CN106526291A - Bypass operation low voltage rapid conversion device, and monitoring, releasing and displaying methods thereof - Google Patents
Bypass operation low voltage rapid conversion device, and monitoring, releasing and displaying methods thereof Download PDFInfo
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- CN106526291A CN106526291A CN201610961691.0A CN201610961691A CN106526291A CN 106526291 A CN106526291 A CN 106526291A CN 201610961691 A CN201610961691 A CN 201610961691A CN 106526291 A CN106526291 A CN 106526291A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
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Abstract
The invention discloses a bypass operation low voltage rapid conversion device, and monitoring, releasing and displaying methods thereof. A circuit breaker is individually disconnected by the electronic release control, and a voltage detection module collects ABC phase voltages of outlet ends of the circuit breaker and then outputs voltage detection signals. A current detection module collects ABC phase currents of the outlet ends and then outputs current detection signals. A zero sequence current detection module collects zero sequence currents of the outlet ends of the circuit breaker and then outputs zero sequence current detection signals. A control module is coupled to a display module, the voltage detection module, the current detection module and the zero sequence current detection module. The display module displays amplitudes of the ABC phase voltages and the ABC phase currents and amplitudes of the zero sequence currents. The control module determines the control of an electronic release to disconnect the circuit breaker according to the detected phase current amplitude or zero sequence current amplitude. The bypass operation low voltage rapid conversion device achieves quick disconnection, automatic and manual switching on and off, and multi-parameter state display, thereby improving the safety and reliability of construction operations of live-line maintenance operators for power grids.
Description
Technical field
The present invention relates to a kind of high pressure detection technique, more particularly, to a kind of side of use in network live upkeep operation
Road operation low pressure quick switching device and its monitoring, dropout and display packing.
Background technology
With the fast development of China's electrical network cause, hotline maintenance has become safe operation that electrical network is effectively ensured and stable
The inevitable important means of power supply, while this also proposes stern challenge to maintenance workmen livewire work work, slightly not
It is careful that life security will be caused to threaten.Hotline maintenance construction operation personnel in operation process, as working procedure is loaded down with trivial details and work
Make the factors such as bad environments, tend to make operating personnel's ignorance fall the danger for existing at one's side, cause to get too close to unintentionally height
Pressure zone electric equipment, so that cause to overhaul workmen's injures and deaths.Therefore how during effective guarantee hotline maintenance construction operation
Operating personnel's life security, strengthen livewire work work management of the safe operation, prevent and avoid the generation of security incident, into
For the important research project in network live upkeep operation field.But construction operation process is overhauled to network live by China at present
Management and control, it is main still to make by exercising supervision with the specific responsibility care provider for enriching livewire work practical experience and combining to construct
Industry personnel's is conscious realizing.And network live overhauls construction operation personnel in its operation process, due to job site operation
Point to involve a wide range of knowledge, and service work is heavy, causes operating personnel easily tired, so as to the inadequate effective depth of energy is concentrated, and then
Act of violating regulations of constructing is susceptible to, so as to cause the generation of security incident.Therefore rely solely on the observation energy of specific responsibility care provider
Power and the self awareness of construction operation personnel, the general Reliable guarantee that is difficult is to the effective of electrical network scene hotline maintenance construction operation process
Control.Although during above-mentioned network live maintenance construction operation, also needing sometimes to use live-line maintenance operation car, due to
The equipment output low-pressure end is without obvious cut-off point and shows point, causes the operation of the equipment sufficiently complex；As hotline maintenance is made
Industry car has high-voltage switch gear and a low-voltage equipment, Live working Aerial Device operationally near high-voltage line, away from user, and division each time
Lock is all obtained to be inspected in Operation Van, and inspection information is given to the control centre of distant place, by control centre's remote control, first makes height
Compress switch divide-shut brake, then lose low-voltage equipment it is electric；Although can so improve hotline maintenance construction operation safety, but
There is also one side policer operation sufficiently complex, on the other hand there is also control centre's maloperation and cause maintenance sites accidents happened
Potential safety hazard, and the agility of network communication is depended on to a greater extent using remote control center, once network occurs
Problem, will bring great safety hazards.
The content of the invention
The present invention is existed because involving a wide range of knowledge the setting of job site for solving existing network live maintenance construction operation more,
Service work is heavy and safe and reliable can not effectively carry out security warning protection, exists hidden safely compared with general overhaul construction operation
The present situation such as suffer from and one kind for providing can quickly disjunction, automatically and manual opening-closing can show with voltage, electric current shows
Protection and opening and closing state show that the construction operation for improving network live maintenance construction operation personnel to a greater extent is safe and reliable
The bypass operation low pressure quick switching device of property and its monitoring, dropout and display packing.
The present invention for the concrete technical scheme that adopts of solution above-mentioned technical problem for：A kind of bypass operation low pressure quickly turns
Changing device, is built in Live working Aerial Device, it is characterised in that：Including voltage detection module, current detection module, zero-sequence current detection
Module, control module, display module, chopper and electronic trip unit；Chopper is located at three-phase voltage outlet side, chopper list
Solely disconnected by the control of corresponding electronic trip unit, A, B, C phase voltage at voltage detection module collection breaker outgoing line end, Jing Guo electricity
Voltage sense signal after pressure transformer and operational amplifier process；The A at current detection module collection breaker outgoing line end, B,
C phase currents, the output electric current measure signal after current transformer, operational amplifier process；Zero-sequence current detection module is gathered
The zero-sequence current at breaker outgoing line end, exports zero-sequence current detection signal after current transformer and operational amplifier are processed；
Control module is coupled to voltage detection module, current detection module and zero-sequence current detection module, believes for receiving voltage detection
Number, current detection signal and zero-sequence current detection signal；Control module is coupled to display module, according to voltage detection signal aobvious
A, B, C phase voltage at breaker outgoing line end is shown in showing module, shows chopper according to current detection signal in display module
The amplitude of A, B, C phase current of leading-out terminal simultaneously judges control electronic trip unit by chopper according to the phase current magnitude that obtains of detection
Disconnect, the zero sequence electricity that foundation zero-sequence current detection signal shows the amplitude of zero-sequence current in display module and obtained according to detection
Stream amplitude judges that chopper is disconnected by control electronic trip unit.Grid maintenance workmen, can when live-line maintenance operation is carried out
The effective phase voltage for oneself going out according to the display module of the bypass operation low pressure quick switching device in Operation Van, phase
Electric current and zero-sequence current relevant information carry out the safety of trouble hunt ing construction operation, play effective and safe warning forewarning function；
And the conversion equipment in Operation Van is automatically according to the detected phase voltage for obtaining, phase current, zero-sequence current data information, automatically
Carry out quick divide-shut brake chopper, it is to avoid the generation of upkeep operation accident, quickly have providing safe early warning effect and reaching simultaneously
The effect of effect safeguard protection hotline maintenance workmen, integrates various multiple protectives, improves network live to a greater extent
The security reliability of maintenance workmen, safely and effectively control can avoid accident from sending out in the maintenance construction operation scene very first time
It is raw；Avoid being controlled the number of drawbacks problem brought, effective guarantee network live upkeep operation people using remote control center
The life of member and property safety.
Preferably, be provided with inside described control module multiple different multiples specified phase-current reference value and its institute it is right
Value turn-off time answered, value followed the increase of specified phase-current reference value and reduced turn-off time, and control module is obtained according to detection
The phase current sensing signal for obtaining and the comparison result of the specified phase-current reference value of setting, judge whether that control electronic trip unit will
Chopper disconnects.Prevent from once disconnecting the safeguard protection that may be brought to a greater extent not enough or do not disconnect phenomenon generation, more greatly
The maltilevel security protective effect at the raising maintenance construction operation scene in degree, to greatest extent control avoid site examining and repairing operation
Potential safety hazard accident occurs.
Preferably, being provided with specified zero-sequence current reference value and its institute of multiple different multiples inside described control module
Corresponding value turn-off time, value followed the increase of specified zero-sequence current reference value and reduced turn-off time, and control module is according to inspection
The comparison result of the zero-sequence current detection signal and specified zero-sequence current reference value of setting for obtaining is surveyed, judges whether to control electronics
Chopper is disconnected by electrical apparatus release.Prevent from once disconnecting the safeguard protection that may be brought to a greater extent not enough or do not disconnect phenomenon and send out
Raw, the maltilevel security protective effect at raising maintenance construction operation scene to a greater extent, to greatest extent control avoid scene
Upkeep operation potential safety hazard accident occurs.
Preferably, also including selecting module, using the chopper of two groups of different capacity models, selecting module selects two groups
The chopper of different model carries out access voltage manually or automatically, and in pattern is automatically selected, control module is examined according to voltage
Survey signal behavior one of which chopper and access voltage.The optional motility of site examining and repairing construction operation is improved, according to scene
Maintenance construction operation practical situation is flexibly selected, while two groups of structures also improve safeguard protection effect, prevent job site because
One group of structure breaks down in itself and is unable to the generation of safe construction phenomenon, improves construction operation efficiency.
Preferably, described electronic trip unit includes audion, relay and electrical apparatus release plug connector, transistor base connects
Enter control module, transistor collector electrical connection normally opened relay coil, normally opened relay contact two ends electrical connection electrical apparatus release connect
Plug-in unit.Improve the work efficiency of electronic trip unit cut-off breaker.
Another goal of the invention of the present invention is to provide a kind of bypass operation low pressure rapid translating detection method, its feature
It is：Comprise the steps
A, B, C phase voltage of one of collection above-mentioned technical proposal, is processed to A, B, C phase voltage respectively, obtains effectively mutually electric
The phase-voltage measurement step of pressure show value；
Automatically the voltage is accessed or manually will according to the virtual value of A, B, C phase voltage one of described in Claims 1 to 5
The voltage that the voltage is accessed accesses step；
A, B, C phase current that A, B, C phase voltage of collection one of above-mentioned technical proposal is formed after being accessed respectively, respectively to A, B,
C phase currents are processed, obtain Claims 1 to 5 described in one of effective phase current magnitude show value phase current sensing step
Suddenly；
The zero sequence phase current that A, B, C phase voltage of one of collection above-mentioned technical proposal is formed after being accessed, is carried out to zero-sequence current
Process, obtain the zero-sequence current detecting step of effective zero-sequence current amplitude show value of one of above-mentioned technical proposal.According to detection
The phase voltage that obtained, phase current, zero-sequence current data situation, believe for overhauling workmen and providing safe early warning data display
Breath, and cut-off breaker of being threaded off automatically in time, are that site examining and repairing construction operation personnel improve site safety protective effect.
Preferably, including the phase current ratio compared with the specified phase-current reference value for setting according to phase current magnitude
To detecting step, and the zero-sequence current compared with the specified zero-sequence current reference value for setting according to zero-sequence current amplitude is compared
Detecting step.
Another goal of the invention of the present invention is to provide a kind of bypass operation low pressure rapid translating tripping method, its feature
It is：Comprise the steps
The rated current setting procedure of multiple specified phase-current reference values and multiple specified zero-sequence current reference values is set, it is each to refer to
Value represents the specified phase current or specified zero-sequence current of one of different multiples above-mentioned technical proposal respectively；
Set multiple specified phase-current reference values and multiple specified zero-sequence current reference values each self-corresponding disengagement time it is de-
ETAD expected time of arrival and departure setting procedure；Value followed the increase of specified zero-sequence current reference value or specified zero-sequence current reference value and subtracted turn-off time
It is few；
The phase current sensing signal that detection is obtained and the comparison result of the specified phase-current reference value of setting, judge whether control
The dropout step that chopper is disconnected by one of above-mentioned technical proposal electronic trip unit；
The zero-sequence current detection signal that detection is obtained and the comparison result of the specified zero-sequence current reference value of setting, judge whether
The dropout step that chopper is disconnected by one of control above-mentioned technical proposal electronic trip unit.According to detect obtained phase voltage,
Phase current, zero-sequence current data situation, provide safe early warning data display information for overhauling workmen, and carry out in time certainly
Dynamic dropout cut-off breaker, is that site examining and repairing construction operation personnel improve site safety protective effect.
Preferably, specified phase-current reference value and specified zero-sequence current reference value are respectively configured as 5,5 specified
Phase-current reference value represent respectively 1.05 times rated current, 1.3 times of rated current, 1.5 times of rated current, 1.8 times
The rated current of rated current and 2 times；If the phase current magnitude that detection is obtained does not turn off phase in 1.05～1.3 times of rated current
Electric current front stage circuits；If the phase current magnitude that detection is obtained is in 1.3～1.5 times of rated current, phase current front stage circuits institute is disconnected
The time for needing is 2200s；If the phase current magnitude that detection is obtained is in 1.5～1.8 times of rated current, phase current front stage circuits are disconnected
The required time is 1500s；If the phase current magnitude that detection is obtained is in 1.8～2 times of rated current, phase current front stage circuits are disconnected
The required time is 800s；If the phase current magnitude that detection is obtained is more than 2 times of rated current, disconnect needed for phase current front stage circuits
Time be 300s.Response time needed for dangerous bigger dropout cut-off breaker is shorter, prevents to a greater extent once breaking
Open the safeguard protection that may bring not enough or do not disconnect phenomenon generation, raising maintenance construction operation scene to a greater extent it is many
Safeguard protection effect again, to greatest extent control avoid site examining and repairing job safety accident risks from occurring.
Another goal of the invention is to provide a kind of bypass operation low pressure rapid translating display packing, its feature to the present invention again
It is：Including the zero-sequence current reference value setting step of the specified zero-sequence current reference value for setting one of multiple above-mentioned technical proposals
Suddenly, each reference value represents the specified zero-sequence current of one of different multiples above-mentioned technical proposal respectively；By zero-sequence current amplitude with it is many
Individual specified zero-sequence current reference value comparing, zero-sequence current amplitude are often more than a reference value, show the zero-sequence current reference value
Zero-sequence current reference value step display；The zero-sequence current reference value is configured to 5, respectively 50mA, 100mA, 200mA,
300mA and 500mA；In 50mA～100mA, display zero-sequence current is 50mA to zero-sequence current amplitude；If zero-sequence current amplitude exists
100mA～200mA, display zero-sequence current are 100mA；If zero-sequence current amplitude 200mA～300mA, show that zero-sequence current is
200mA；If zero-sequence current amplitude 300mA～500mA, display zero-sequence current is 300mA；If zero-sequence current amplitude is more than
500mA, display zero-sequence current are 500mA.Clear and definite danger warning parameter is set and shows point, the data message of dangerous bigger display
It is bigger, early warning effect more it is clear and definite effectively, prevent from once disconnecting the safeguard protection that may be brought to a greater extent not enough or not
Disconnect phenomenon to occur, the maltilevel security protective effect at raising maintenance construction operation scene to a greater extent is controlled to greatest extent
System avoids site examining and repairing job safety accident risks from occurring.
The invention has the beneficial effects as follows：Can quickly disjunction, automatically and manual opening-closing can show with voltage, electric current shows
Show i.e. track protection, residual current shows that i.e. track protection and opening and closing state show, improve network live inspection to a greater extent
Repair the construction operation security reliability of construction operation personnel；Grid maintenance workmen can have when live-line maintenance operation is carried out
The phase voltage for oneself going out according to the display module of the bypass operation low pressure quick switching device in Operation Van of effect, mutually electricity
Stream and zero-sequence current relevant information carry out the safety of trouble hunt ing construction operation, play effective and safe warning forewarning function；And
And the conversion equipment in Operation Van enters automatically automatically according to the detected phase voltage for obtaining, phase current, zero-sequence current data information
The quick divide-shut brake chopper of row, it is to avoid the generation of upkeep operation accident, reaches quickly effectively simultaneously safe early warning effect is provided
The effect of safeguard protection hotline maintenance workmen, integrates various multiple protectives, improves network live inspection to a greater extent
The security reliability of workmen is repaiied, safely and effectively control accident can be avoided to occur in the maintenance construction operation scene very first time；
Avoid being controlled the number of drawbacks problem brought using remote control center, effective guarantee network live upkeep operation personnel's
Life and property safety.
Description of the drawings：
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the principle schematic diagram. one of bypass operation low pressure quick switching device of the present invention.
Fig. 2 is the principle schematic diagram. two of bypass operation low pressure quick switching device of the present invention.
Fig. 3 is the principle schematic diagram. three of bypass operation low pressure quick switching device of the present invention.
Fig. 4 is the principle schematic diagram. four of bypass operation low pressure quick switching device of the present invention.
Fig. 5 is the principle schematic diagram. five of bypass operation low pressure quick switching device of the present invention.
Fig. 6 is the schematic flow sheet of bypass operation low pressure quick switching device detection method of the present invention.
Fig. 7 is the schematic flow sheet of bypass operation low pressure quick switching device tripping method of the present invention.
Fig. 8 is the schematic flow sheet of bypass operation low pressure quick switching device display packing of the present invention.
Specific embodiment
Embodiment 1：
In embodiment shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of bypass operation low pressure quick switching device is built in band
Electric Operation Van, including voltage detection module 40, current detection module 50, zero-sequence current detection module 70, control module 30, display
Module 30, chopper and electronic trip unit 20；Chopper is located at three-phase voltage outlet side, and chopper individually receives corresponding electronics
Electrical apparatus release control disconnects, and A, B, C phase voltage at voltage detection module collection breaker outgoing line end, through voltage transformer and computing
Voltage sense signal after amplifier process；A, B, C phase current at current detection module collection breaker outgoing line end, Jing Guo electricity
Output electric current measure signal after current transformer, operational amplifier process；Zero-sequence current detection module collection breaker outgoing line end
Zero-sequence current, exports zero-sequence current detection signal after current transformer and operational amplifier are processed；Control module is coupled to
Voltage detection module, current detection module and zero-sequence current detection module, for receiving voltage detection signal, current detection signal
With zero-sequence current detection signal；Control module is coupled to display module, shows disconnected according to voltage detection signal in display module
A, B, C phase voltage of road device leading-out terminal, shows A, B, C phase at breaker outgoing line end in display module according to current detection signal
According to the phase current magnitude that obtains of detection, the amplitude of electric current simultaneously judges that chopper is disconnected by control electronic trip unit, according to zero sequence electricity
The zero-sequence current amplitude that stream detection signal shows the amplitude of zero-sequence current in display module and obtained according to detection judges control
Chopper is disconnected by electronic trip unit.Display module 60 includes the display screen 61 using LED or LCD.Control module 30 includes collection
Into chip 31.Multiplex arithmetric amplifier is provided with voltage detection module 40, and each road opamp input terminal is extruded with three-phase electricity
Line end is mutually electrically connected.The specified phase-current reference value of multiple different multiples and its corresponding turn-off time is provided with inside control module
Value, value followed the increase of specified phase-current reference value and reduced turn-off time, the phase current inspection that control module is obtained according to detection
The comparison result of signal and the specified phase-current reference value of setting is surveyed, judges whether that controlling electronic trip unit disconnects chopper.
Phase current sensing signal is not up to of minimum in multiple specified zero-sequence current reference values, continuous circuit breaker.Control module
Inside is provided with the specified zero-sequence current reference value and its corresponding value turn-off time of multiple different multiples, and turn-off time, value was followed
The increase of specified zero-sequence current reference value and reduce, control module according to detection obtain zero-sequence current detection signal with setting
The comparison result of specified zero-sequence current reference value, judges whether that controlling electronic trip unit disconnects chopper.Zero-sequence current is detected
Signal is not up to of minimum in multiple specified zero-sequence current reference values, continuous circuit breaker.Bypass operation low pressure quickly turns
Selecting module is provided with changing device, and using the chopper of two groups of different capacity models, selecting module selects two groups of different models
Chopper carries out access voltage manually or automatically, and in pattern is automatically selected, control module is selected according to voltage detection signal
One of which chopper accesses voltage.QF1 electronic trip unit 20 of the A roads output chopper 10 of wherein 800A by model 800A
Control, the B roads output chopper 10A of 400A are controlled by the QF2 electronic trip units 20A of model 400A.
Electronic trip unit includes audion 21, relay 22 and electrical apparatus release plug connector 23, and 21 base stage of audion is electrically accessed control
Molding block 30,21 colelctor electrode of audion electrical connection 22 coil of normally opened relay, the electrical connection of 22 contact two ends of normally opened relay are threaded off
Device connector 23.By taking above-mentioned technical proposal, due to bypass operation low pressure quick switching device, livewire work is built in
Car, is connected to the low pressure control section of Live working Aerial Device, for controlling the high-voltage switch gear of Live working Aerial Device, therefore, height is pressed off
The control of pass by control centre, and need not can show the state of high-voltage switch gear by display module, also keep away in addition
Maloperation occur in Mian Liao control centres causes scene potential safety hazard occur.
Fig. 1 includes two different choppers of model, is the chopper and a 400A of a 800A in the present embodiment
Chopper, two choppers are each respectively by a single electronic trip unit control.
Fig. 2 includes voltage detection module, gathers A, B, C phase voltage, including the chopper of the chopper and 400A of 800A, Jing
Voltage sense signal after overvoltage transformer, operational amplifier process；Control module is coupled to voltage detection module, is used for
Receiving voltage detection signal, is further coupled to display module, shows A, B, C phase voltage according to voltage detection signal in display module
Virtual value.
Fig. 3 includes current detection module, gathers A, B, C phase current at breaker outgoing line end, through current transformer, computing
Output electric current measure signal after amplifier process；Control module is coupled to current detection module, for receiving current detection signal,
Display module is further coupled to, and the amplitude of A, B, C phase current and control electronics is shown according to current detection signal in display module
Chopper is disconnected by electrical apparatus release.
Fig. 4 includes zero-sequence current detection module, gathers the zero-sequence current at breaker outgoing line end, through current transformer, fortune
Calculate after amplifier is processed and export zero-sequence current detection signal；Control module is coupled to zero-sequence current detection module, for receiving zero
Sequence current detection signal；Display module is further coupled to, and zero-sequence current is shown according to zero-sequence current detection signal in display module
Chopper is disconnected by amplitude and control electronic trip unit.
Fig. 1, Fig. 5 pass through two Controls, two electronic trip units respectively, so as to control two choppers.Wherein,
Selected manually or automatically, also, in pattern is automatically selected by being connected to the button of control module, control module is examined according to voltage
Survey signal behavior one of which chopper and access voltage.The above-mentioned control module for referring to is single chip circuit, and display module is aobvious
Display screen.
Embodiment 2：
In embodiment shown in Fig. 6, a kind of bypass operation low pressure rapid translating detection method comprises the steps：
A, B, C phase voltage of collection embodiment 1, is processed to A, B, C phase voltage respectively, obtains effective phase voltage show value
Phase-voltage measurement step 41；
The voltage that the voltage is accessed or manually accessed the voltage is accessed into step automatically according to the virtual value of A, B, C phase voltage
Rapid 42；
A, B, C phase current that A, B, C phase voltage of collection embodiment 1 is formed after being accessed respectively, enters to A, B, C phase current respectively
Row is processed, and obtains the phase current sensing step 43 of effective phase current magnitude show value of embodiment 1；
The zero sequence phase current that A, B, C phase voltage of collection embodiment 1 is formed after being accessed, is processed to zero-sequence current, is obtained
The zero-sequence current detecting step 44 of effective zero-sequence current amplitude show value of embodiment 1；
The phase current Determination step that foundation phase current magnitude is compared with the specified phase-current reference value for setting, and foundation
The zero-sequence current Determination step 45 that zero-sequence current amplitude is compared with the specified zero-sequence current reference value for setting.By adopting
Above-mentioned technical proposal is taken, when operator operates at the scene, it may be to know that real-time voltage, real-time current and real-time residual current
Information, and in the hot line maintenance monitoring method, also including current tracking protection, residual current track protection work(
Can, safety can be improved.
Embodiment 3：
In embodiment shown in Fig. 7, a kind of bypass operation low pressure rapid translating tripping method comprises the steps：
The rated current setting procedure 51 of multiple specified phase-current reference values and multiple specified zero-sequence current reference values is set, it is each to join
Examine specified phase current or specified zero-sequence current that value represents different multiples embodiment 1 respectively；
Set multiple specified phase-current reference values and multiple specified zero-sequence current reference values each self-corresponding disengagement time it is de-
ETAD expected time of arrival and departure setting procedure 52；Turn-off time value follow the increase of specified zero-sequence current reference value or specified zero-sequence current reference value and
Reduce；
The phase current sensing signal that detection is obtained and the comparison result of the specified phase-current reference value of setting, judge whether control
The dropout step 53 that chopper is disconnected by 1 electronic trip unit of embodiment；
The zero-sequence current detection signal that detection is obtained and the comparison result of the specified zero-sequence current reference value of setting, judge whether
The dropout step 54 that chopper is disconnected by control 1 electronic trip unit of embodiment.
Specified phase-current reference value and specified zero-sequence current reference value are respectively configured as 5,5 specified phase-current references
Value represent respectively 1.05 times rated current, 1.3 times of rated current, 1.5 times of rated current, 1.8 times of rated current and 2
Rated current again；If the phase current magnitude that detection is obtained is in 1.05～1.3 times of rated current, phase current prime electricity is not turned off
Road；If the phase current magnitude that detection is obtained is in 1.3～1.5 times of rated current, the time needed for phase current front stage circuits that disconnects is
2200s；If the phase current magnitude that detection is obtained disconnects the time needed for phase current front stage circuits in 1.5～1.8 times of rated current
For 1500s；If the phase current magnitude that detection is obtained disconnects the time needed for phase current front stage circuits in 1.8～2 times of rated current
For 800s；If the phase current magnitude that detection is obtained is more than 2 times of rated current, the time needed for phase current front stage circuits that disconnects is
300s。
Embodiment 4：
In embodiment shown in Fig. 8, a kind of bypass operation low pressure rapid translating display packing, including setting multiple embodiments 1
The zero-sequence current reference value setting procedure 71 of specified zero-sequence current reference value, each reference value represents different multiples embodiment 1 respectively
Specified zero-sequence current；Zero-sequence current amplitude and multiple specified zero-sequence current reference value comparings, zero-sequence current amplitude are often more than
One reference value, shows the zero-sequence current reference value step display 72 of the zero-sequence current reference value；The zero-sequence current reference value
5 are configured to, respectively 50mA, 100mA, 200mA, 300mA and 500mA；Zero-sequence current amplitude is shown in 50mA～100mA
Zero-sequence current is 50mA；If zero-sequence current amplitude is in 100mA～200mA, display zero-sequence current is 100mA；If zero-sequence current width
Value 200mA～300mA, display zero-sequence current are 200mA；If zero-sequence current amplitude 300mA～500mA, zero-sequence current is shown
For 300mA；If zero-sequence current amplitude is more than 500mA, display zero-sequence current is 500mA.Arrange clear and definite danger warning parameter to show
Show a little, the data message of dangerous bigger display is bigger；And while these difference display points are set, also set up each phase
Correspondence shows the alternative sounds alarm of point, and the higher alert frequency of the more loud tone alerts of danger is bigger, and early warning effect more clearly has
Effect, it is not enough or do not disconnect phenomenon generation to prevent from once disconnecting the safeguard protection that may be brought to a greater extent, to a greater extent
The maltilevel security protective effect at maintenance construction operation scene is improved, control to greatest extent avoids site examining and repairing job safety hidden danger
Accident occurs.
Above content and structure describes ultimate principle, principal character and the advantages of the present invention of product of the present invention, one's own profession
The technical staff of industry should be recognized that.Merely illustrating the principles of the invention described in examples detailed above and description, without departing from this
On the premise of spirit and scope, the present invention also has various changes and modifications, and these changes and improvements belong to requirement and protect
Within the scope of the invention of shield.The claimed scope of the invention is by appending claims and its equivalent thereof.
Claims (10)
1. a kind of bypass operation low pressure quick switching device, is built in Live working Aerial Device, it is characterised in that：Including voltage detecting mould
Block, current detection module, zero-sequence current detection module, control module, display module, chopper and electronic trip unit；Chopper
Located at three-phase voltage outlet side, chopper is individually disconnected by the control of corresponding electronic trip unit, and voltage detection module collection is disconnected
A, B, C phase voltage of road device leading-out terminal, the voltage sense signal after voltage transformer and operational amplifier are processed；Electric current
A, B, C phase current at detection module collection breaker outgoing line end, the output current after current transformer, operational amplifier process
Detection signal；The zero-sequence current at zero-sequence current detection module collection breaker outgoing line end, through current transformer and operation amplifier
Zero-sequence current detection signal is exported after device process；Control module is coupled to voltage detection module, current detection module and zero sequence electricity
Stream detection module, for receiving voltage detection signal, current detection signal and zero-sequence current detection signal；Control module is coupled to
Display module, shows A, B, C phase voltage at breaker outgoing line end in display module according to voltage detection signal, examines according to electric current
The phase current width that survey signal shows the amplitude of A, B, C phase current at breaker outgoing line end in display module and obtained according to detection
Value judges that chopper is disconnected by control electronic trip unit, shows zero-sequence current according to zero-sequence current detection signal in display module
Amplitude and judge that chopper is disconnected by control electronic trip unit according to the zero-sequence current amplitude that obtains of detection.
2. according to the bypass operation low pressure quick switching device described in claim 1, it is characterised in that：In described control module
Portion is provided with the specified phase-current reference value and its corresponding value turn-off time of multiple different multiples, turn-off time value follow it is specified
The increase of phase-current reference value and reduce, control module is specified mutually electric with setting according to the phase current sensing signal that detection is obtained
The comparison result of stream reference value, judges whether that controlling electronic trip unit disconnects chopper.
3. according to the bypass operation low pressure quick switching device described in claim 1, it is characterised in that：In described control module
Portion is provided with the specified zero-sequence current reference value and its corresponding value turn-off time of multiple different multiples, and turn-off time, value followed volume
Determine the increase of zero-sequence current reference value and reduce, control module is according to detection the zero-sequence current detection signal for obtaining and the volume for setting
Determine the comparison result of zero-sequence current reference value, judge whether that controlling electronic trip unit disconnects chopper.
4. according to the bypass operation low pressure quick switching device described in claim 1, it is characterised in that：Also include selecting module,
Using the chopper of two groups of different capacity models, selecting module selects the chopper of two groups of different models to carry out manually or automatically
Voltage is accessed, in pattern is automatically selected, control module selects one of which chopper to access voltage according to voltage detection signal.
5. according to the bypass operation low pressure quick switching device described in claim 1 or 2 or 3, it is characterised in that：Described electronics
Electrical apparatus release includes audion, relay and electrical apparatus release plug connector, and transistor base Access Control module, transistor collector are electrically connected
Connect normally opened relay coil, normally opened relay contact two ends electrical connection electrical apparatus release connector.
6. a kind of bypass operation low pressure quick switching device detection method, it is characterised in that：Comprise the steps
A, B, C phase voltage one of described in collection Claims 1 to 5, processes to A, B, C phase voltage respectively, obtains effective
The phase-voltage measurement step of phase voltage show value；
Automatically the voltage is accessed or manually will according to the virtual value of A, B, C phase voltage one of described in Claims 1 to 5
The voltage that the voltage is accessed accesses step；
A, B, C phase voltage one of described in collection Claims 1 to 5 accessed after A, B, C phase current for being formed respectively, it is right respectively
A, B, C phase current is processed, obtain Claims 1 to 5 described in one of effective phase current magnitude show value phase current inspection
Survey step；
A, B, C phase voltage one of described in collection Claims 1 to 5 accessed after the zero sequence phase current that formed, to zero-sequence current
Processed, obtain Claims 1 to 5 described in one of effective zero-sequence current amplitude show value zero-sequence current detecting step.
7. according to the bypass operation low pressure quick switching device detection method described in claim 6, it is characterised in that：Including foundation
The phase current Determination step that phase current magnitude is compared with the specified phase-current reference value for setting, and according to zero-sequence current
The zero-sequence current Determination step that amplitude is compared with the specified zero-sequence current reference value for setting.
8. a kind of bypass operation low pressure quick switching device tripping method, it is characterised in that：Comprise the steps
The rated current setting procedure of multiple specified phase-current reference values and multiple specified zero-sequence current reference values is set, it is each to refer to
Specified phase current or specified zero-sequence current that value one of is represented described in different multiples Claims 1 to 5 respectively；
Set multiple specified phase-current reference values and multiple specified zero-sequence current reference values each self-corresponding disengagement time it is de-
ETAD expected time of arrival and departure setting procedure；Value followed the increase of specified zero-sequence current reference value or specified zero-sequence current reference value and subtracted turn-off time
It is few；
The phase current sensing signal that detection is obtained and the comparison result of the specified phase-current reference value of setting, judge whether control
The dropout step that chopper is disconnected by electronic trip unit one of described in Claims 1 to 5；
The zero-sequence current detection signal that detection is obtained and the comparison result of the specified zero-sequence current reference value of setting, judge whether
Electronic trip unit dropout step that chopper is disconnected one of described in control claim 1～5.
9. according to the bypass operation low pressure quick switching device tripping method described in claim 8, it is characterised in that：Specified mutually electricity
Stream reference value and specified zero-sequence current reference value are respectively configured as 5, and 5 specified phase-current reference values represent 1.05 times respectively
Rated current, 1.3 times of rated current, 1.5 times of rated current, the rated current of 1.8 times of rated current and 2 times；If
The phase current magnitude that detection is obtained does not turn off phase current front stage circuits in 1.05～1.3 times of rated current；If the phase that detection is obtained
In 1.3～1.5 times of rated current, the time needed for phase current front stage circuits that disconnects is 2200s to current amplitude；What if detection was obtained
In 1.5～1.8 times of rated current, the time needed for phase current front stage circuits that disconnects is 1500s to phase current magnitude；If detection is obtained
Phase current magnitude in 1.8～2 times of rated current, the time needed for phase current front stage circuits that disconnects is 800s；If detection is obtained
Phase current magnitude be more than 2 times of rated current, disconnect phase current front stage circuits needed for time be 300s.
10. a kind of bypass operation low pressure quick switching device display packing, it is characterised in that：Including the multiple claim 1 of setting
The zero-sequence current reference value setting procedure of the specified zero-sequence current reference value one of described in～5, each reference value represent difference respectively
Specified zero-sequence current one of described in multiple Claims 1 to 5；By zero-sequence current amplitude and multiple specified zero-sequence current reference values
Compare, zero-sequence current amplitude is often more than a reference value, show that the zero-sequence current reference value of the zero-sequence current reference value shows step
Suddenly；The zero-sequence current reference value is configured to 5, respectively 50mA, 100mA, 200mA, 300mA and 500mA；Zero-sequence current width
In 50mA～100mA, display zero-sequence current is 50mA to value；If zero-sequence current amplitude is in 100mA～200mA, zero-sequence current is shown
For 100mA；If zero-sequence current amplitude 200mA～300mA, display zero-sequence current is 200mA；If zero-sequence current amplitude 300mA
～500mA, display zero-sequence current are 300mA；If zero-sequence current amplitude is more than 500mA, display zero-sequence current is 500mA.
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