CN108896948A - A kind of no-load voltage ratio measuring device and measuring method of tandem test potential device - Google Patents
A kind of no-load voltage ratio measuring device and measuring method of tandem test potential device Download PDFInfo
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- CN108896948A CN108896948A CN201810639553.XA CN201810639553A CN108896948A CN 108896948 A CN108896948 A CN 108896948A CN 201810639553 A CN201810639553 A CN 201810639553A CN 108896948 A CN108896948 A CN 108896948A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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Abstract
The present invention provides a kind of no-load voltage ratio measuring device and measuring method of tandem test potential device, the tandem test potential device includes several section testing transformers, and each section testing transformer all has low pressure winding, high-voltage winding and measurement winding respectively；The no-load voltage ratio measuring device includes：Input power cord, output power line, no-load voltage ratio measuring instrument, switching mechanism and control mechanism；The no-load voltage ratio measuring instrument is used to test the voltage change ratio of the input power cord Yu the output power line, and control mechanism is for controlling switching mechanism；Apparatus of the present invention keep Cascade testing transformer convenient and efficient when carrying out factory transformer ratio check test, do not have to frequently change wiring, improve the efficiency and accuracy of no-load voltage ratio measurement.
Description
Technical field
The invention belongs to electric power measuring device fields, survey in particular to a kind of no-load voltage ratio of tandem test potential device
Measure device and measurement method.
Background technique
It has to carry out no-load voltage ratio measurement in the manufacturing enterprise of testing transformer, before product export.On the one hand：It examines and becomes
The reliability of the parameter of depressor；On the other hand：Foundation can be provided for the design and optimization of transformer.Especially suitable for transformer
Manufacturing enterprise.
Wherein, most cascaded transformers are formed by connecting by multiple transformation windings, i.e., are to the eye tapped transformer
Connection.Due to Cascade, generally 2-3 grades, the sum of transformer voltage ratio and each section transformer voltage ratio are unequal when tandem, need
To the transformer ratio check before transformer factory.When test, these transformation windings should be tested one by one respectively, and have this
A little transformation windings are combined test, it is also necessary to while whether the measurement winding tested in these transformation windings is accurate.
In traditional detection using artificial wiring measurement by the way of, artificial wiring when measuring every section transformer every time,
High-voltage conducting wires are removed, then no-load voltage ratio measurement line is connected to terminal and is measured.Due to the volume of testing transformer is relatively large,
Height is higher, and repeatedly upper and lower is taken out stitches and wiring, considerably increases measurement cost, error number caused by being also easy because of wiring error
According to.And the Complicated Flows such as dismounting repeatedly and wiring greatly reduce measurement efficiency；It has been greatly reduced on transformer simultaneously
The service life of connecting terminal.
Summary of the invention
The object of the present invention is to provide a kind of no-load voltage ratio measuring devices of testing transformer, it is intended to solve testing transformer
Manufacturing enterprise measurement cost it is high, measurement efficiency is low, and measurement leads to the reduction of connecting terminal service life.
Another object of the present invention is to provide a kind of no-load voltage ratio measurement methods of testing transformer.
To reach above-mentioned purpose, a kind of no-load voltage ratio measuring device of tandem test potential device of the present invention, the tandem test
Potential device includes several section testing transformers, and each testing transformer that saves all has low pressure winding, high-voltage winding and survey respectively
Measure winding；The no-load voltage ratio measuring device includes：Input power cord, output power line, no-load voltage ratio measuring instrument, switching mechanism and control
Mechanism.
The no-load voltage ratio measuring instrument is used to test the voltage change ratio of the input power cord Yu the output power line.
Switching mechanism includes the first electronic switch assembly of several groups, the first electronic switch assembly described in several groups respectively to
The low pressure winding of each section testing transformer is connected to input power cord.
Switching mechanism includes the second electronic switch assembly of several groups, the second electronic switch assembly described in several groups respectively to
The measurement winding of each section transformer is connected to input power cord.
Switching mechanism includes several groups third electronic switch assembly, third electronic switch assembly described in several groups respectively to
Cascade arrangement between two adjacent sections transformer.
Switching mechanism includes several the 4th electronic switches, several described 4th electronic switches are respectively to try each section
The output terminal for testing the high-voltage winding of transformer is connected to output power line.
Control mechanism is for controlling to control those first electronic switch assemblies, those second electronic switch assemblies, be somebody's turn to do
The open and-shut mode of a little third electronic switch assemblies and those the 4th electronic switches.
The present invention can also be further perfect by following technical measures：
As a further improvement, tandem test potential device include first segment transformer, the second section transformer and
Third section transformer.
First electronic switch assembly described in several groups includes the switch block one connecting with first segment transformer, with the second section
The switch block two of transformer connection, the switch block three being connect with third section transformer.
Several described second electronic switch assemblies include the switch block four connecting with first segment transformer, with the second section
The switch block five of transformer connection；The switch block six being connect with third section transformer.
Several described third electronic switch assemblies include being connected between first segment transformer and the second section transformer
Switch block seven, the switch block eight being connected between the second section transformer and third section transformer.
Several the 4th electronic switches include connecting electronic cutting with the output terminal of the high-voltage winding of each section transformer respectively
Nine are closed to electronic switch 14.
As a further improvement, the control mechanism is PLC controller.
As a further improvement, there is the first button for control switch component one, for controlling in the PLC controller
Second button of switch block two processed, for the third button of control switch component three, for control switch component four the 4th
Button is used for control switch group for the 6th button of control switch component six for the 5th button of control switch component five
7th button of part seven for the 8th button of control switch component eight, and is respectively used to control electronic switch nine to electronics
The 9th button to the 14th button of switch 14.
As a further improvement, further including rectification dropping equipment, the rectification dropping equipment is used to control to the PLC
Device and the input power cord power supply.
The present invention also provides a kind of no-load voltage ratio measurement methods of tandem test potential device, become for measuring the test of three section tandems
Equipment is pressed, no-load voltage ratio measuring device as described above is correspondingly connected to three section tandems test potential device.
Wherein, being defined on the higher connecting terminal of voltage in high-voltage winding is the first extreme son, the lower terminals of voltage
Son is the second pole connecting terminal.
Electronic switch nine, electronic switch 11, electronic switch 13 are respectively connected to first segment transformer, the second section becomes
Second extreme son of depressor, third section transformer；Electronic switch ten, electronic switch 12, electronic switch 14 are separately connected
To first segment transformer, the second section transformer, third section transformer the first extreme son.
After no-load voltage ratio measuring device is connected to three section tandems test potential device, switching mechanism is controlled by control mechanism and is held
The following any step arranged side by side of row.
S1 measures the no-load voltage ratio between first segment transformer low voltage winding and high-voltage winding, the closure of switch block one, electronic switch
Nine closures, electronic switch ten are closed.
S2 measures the no-load voltage ratio between the first and second section transformer low voltage winding and high-voltage winding, the closure of switch block one, switch
The closure of component seven, the closure of electronic switch nine, electronic switch 12 are closed.
S3, measures the no-load voltage ratio between the first, second and third section transformer low voltage winding and high-voltage winding, and the closure of switch block one is opened
The closure of component seven, the closure of switch block eight, the closure of electronic switch nine, electronic switch 14 is closed to be closed.
S4 measures the no-load voltage ratio between the second section transformer low voltage winding and high-voltage winding, the closure of switch block two, electronic switch
11 closures, electronic switch 12 are closed.
S5 measures the no-load voltage ratio between second and third section transformer low voltage winding and high-voltage winding, the closure of switch block two, switch
The closure of component eight, the closure of electronic switch 11, electronic switch 14 are closed.
S6 measures the no-load voltage ratio between third section transformer low voltage winding and high-voltage winding, the closure of switch block three, electronic switch
13 closures, electronic switch 14 are closed.
S7, the no-load voltage ratio between measurement first segment transformer measurement winding and high-voltage winding, the closure of switch block four, electronic switch
Nine closures, electronic switch ten are closed.
S8, the no-load voltage ratio between the first and second section transformer of measurement measurement winding and high-voltage winding, the closure of switch block four, switch
The closure of component seven, the closure of electronic switch nine, electronic switch 12 are closed.
S9, the no-load voltage ratio between the first, second and third section transformer of measurement measurement winding and high-voltage winding, the closure of switch block two are opened
The closure of component seven, the closure of switch block eight, the closure of electronic switch nine, electronic switch 14 is closed to be closed.
S10, the no-load voltage ratio between the second section transformer of measurement measurement winding and high-voltage winding, the closure of switch block five, electronic cutting
Guan Shiyi closure, electronic switch 12 are closed.
S11 measures the no-load voltage ratio between second and third section transformer measurement winding and high-voltage winding, the closure of switch block five, switch
The closure of component eight, the closure of electronic switch 11, electronic switch 14 are closed.
S12, the no-load voltage ratio between measurement third section transformer measurement winding and high-voltage winding, the closure of switch block six, electronic cutting
Guan Shisan closure, electronic switch 14 are closed.
As a further improvement, when electronic switch is not connected to control command, it is in the open state.
As a further improvement, there is the control button of corresponding S1 to S12, and the control button has point on control mechanism
Dynamic function.
The beneficial effects of the invention are as follows：Cascade testing transformer before being dispatched from the factory by using this no-load voltage ratio measuring device
Transformer ratio check test, it is more convenient, do not have to frequently change wiring, improves the efficiency of no-load voltage ratio measurement, protect transformer
The structure of external terminal etc. does not influence partial discharge amount when transformer uses；Save cost required for artificial wiring；It mentions
The reliability of wiring when high no-load voltage ratio measurement.The present invention provides the change with engineering value for the manufacturing enterprise of cascade-connected transformer
Compare measuring device.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the no-load voltage ratio measuring device of testing transformer of the embodiment of the present invention；
Fig. 2 is the circuit structure diagram of the test object of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the operating circuit of the embodiment of the present invention.
Label declaration：
Control mechanism 10, switching mechanism 20, the first electronic switch assembly 21, the second electronic switch assembly 22, third electronics
Switch block 23, the 4th electronic switch 24, input power cord 30, output power line 40, no-load voltage ratio measuring instrument 50, tandem test transformation
Equipment 70, first segment transformer 71, the second section transformer 72, third section transformer 73, low pressure winding 74, measurement winding 75, height
Press winding 76.
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is cooperated to be explained in detail.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Fig. 1 to Fig. 3, a kind of no-load voltage ratio measuring device of tandem test potential device are please referred to, the tandem test transformation is set
Standby 70 include several section testing transformers, and each section testing transformer all has low pressure winding 74, high-voltage winding 76 respectively and surveys
Measure winding 75.The no-load voltage ratio measuring device includes：Input power cord 30, output power line 40, no-load voltage ratio measuring instrument 50, switching mechanism
20 and control mechanism 10.
The no-load voltage ratio measuring instrument 50 is used to test the voltage change ratio of the input power cord 30 and the output power line 40.
Switching mechanism 20 includes the first electronic switch assembly of several groups 21, and the first electronic switch assembly 21 described in several groups divides
Not the low pressure winding 74 of each section testing transformer is connected to input power cord 30.
Switching mechanism 20 includes the second electronic switch assembly of several groups 22, and the second electronic switch assembly 22 described in several groups divides
Not the measurement winding 75 of each section transformer is connected to input power cord 30.
Switching mechanism 20 includes several groups third electronic switch assembly 23, and third electronic switch assembly 23 described in several groups divides
Not to cascade arrangement between two adjacent sections transformer.
Switching mechanism 20 includes several the 4th electronic switches 24, several described 4th electronic switches 24 are respectively to incite somebody to action
The output terminal of the high-voltage winding 76 of each section testing transformer is connected to output power line 40.
Control mechanism 10 is for controlling to control those first electronic switch assemblies 21, those second electronic switch assemblies
22, the open and-shut mode of those third electronic switch assemblies 23 and those the 4th electronic switches 24.
Cascade testing transformer transformer ratio check test before being dispatched from the factory by using this no-load voltage ratio measuring device, more just
Just quick, do not have to frequently change wiring, improves the efficiency of no-load voltage ratio measurement, protect the structure of transformer external terminal etc., no
Influence partial discharge amount when transformer uses；Save cost required for artificial wiring；Wiring when improving no-load voltage ratio measurement
Reliability.The present invention provides the no-load voltage ratio measuring device with engineering value for the manufacturing enterprise of cascade-connected transformer.
Embodiment 1
Since tandem test potential device 70 is generally 2 section testing transformer tandems or 3 section testing transformer tandems, and 3
The cascaded transformer of section needs to test being up to 12 groups of no-load voltage ratio data in test, need repeatedly it is upper and lower take out stitches and wiring,
Measurement cost is considerably increased, wrong data caused by being also easy because of wiring error greatly reduces transformer upper connecting terminal
Service life.
In the present embodiment, measured tandem test potential device 70 includes first segment transformer 71, the second section
Transformer 72 and third section transformer 73.
First electronic switch assembly 21 shares three groups, is the switch block one connecting with first segment transformer 71 respectively, with
The switch block two of second section transformer 72 connection, the switch block three being connect with third section transformer 73.
Second electronic switch assembly 22 shares three groups, is the switch block four that first segment transformer 71 connects respectively, with the
The switch block five of two section transformers 72 connection；The switch block six being connect with third section transformer 73；
Third electronic switch assembly 23 shares two groups, is to be connected to first segment transformer 71 and the second section transformer 72 respectively
Between switch block seven, the switch block eight being connected between the second section transformer 72 and third section transformer 73.
Using electronic switch assembly mode, so that the electronic switch in each electronic switch assembly is linked and be arranged, reduce control and refers to
The redundancy of order improves working efficiency, also, associated electronic switch is carried out linkage setting, and holding is opened simultaneously or is closed
State is conducive to the security performance for improving measuring device.
4th electronic switch 24 shares 6, is to connect electricity with the output terminal of the high-voltage winding 76 of each section transformer respectively
Sub switch nine is to electronic switch 14.
It is the no-load voltage ratio measurement before 3 section cascade-connected transformers are dispatched from the factory to be suitable for Transformer Manufacturing Enterprises.
The controller of control mechanism 10 can be it is a variety of, for example, with processing chip controller, be directly connected to switching group
The button of part or electronic switch.
In the present embodiment, the control mechanism 10 is PLC controller.PLC controller source is wide, practical using simple
Property it is strong, and certain programming can be done and simplified, control process.
In the present embodiment, no-load voltage ratio measuring device further includes rectification dropping equipment, and the rectification dropping equipment is used for institute
State 30 power supply of PLC controller and the input power cord.It can both have been inputted to the PLC controller by rectifying dropping equipment
DC power supply, and can be to 30 input ac power of input power cord.
Specifically, there is the first button for control switch component one in the PLC controller, be used for control switch group
Second button of part two is used for for the third button of control switch component three for the 4th button of control switch component four
5th button of control switch component five, for the 6th button of control switch component six, for control switch component seven
Seven buttons for the 8th button of control switch component eight, and are respectively used to control electronic switch nine to electronic switch 14
The 9th button to the 14th button.Also, when the button in PLC controller is not pressed, all electronic switches are in
Opening state.
Being defined on the higher connecting terminal of voltage in high-voltage winding 76 is the first extreme son, and the lower connecting terminal of voltage is
Second pole connecting terminal；
Electronic switch nine, electronic switch 11, electronic switch 13 are respectively connected to first segment transformer 71, the second section
Second extreme son of transformer 72, third section transformer 73；By electronic switch ten, electronic switch 12,14 points of electronic switch
It is not connected to the first extreme son of first segment transformer 71, the second section transformer 72, third section transformer 73.
Fig. 2~Fig. 3 is please referred to, KM1~KM8 respectively represents switch block one to switch block eight；KM9 to KM14 is represented
Electronic switch nine is to electronic switch 14；A1, A2, A3 respectively represent the first testing transformer 30, the second testing transformer 40,
The extreme son of the first of three testing transformers 50.X1, X2, X3 respectively represent first testing transformer 30, second and test transformation
Second extreme son of device 40, third testing transformer 50.
When measuring the no-load voltage ratio between 71 low pressure winding 74 of first segment transformer and high-voltage winding 76, the first button, the are pressed
Nine buttons, the tenth button.
When measuring the no-load voltage ratio between the first and second section transformer low voltage winding 74 and high-voltage winding 76, the first button, the 7th are pressed
Button, the 9th button, the 12nd button.
When measuring the no-load voltage ratio between the first, second and third section transformer low voltage winding 74 and high-voltage winding 76, press the first button,
7th button, the 8th button, the 9th button, the 14th button.
No-load voltage ratio between measurement 72 low pressure winding 74 of the second section transformer and high-voltage winding 76, presses the second button, the tenth
One button, the 12nd button.
When measuring the no-load voltage ratio between second and third section transformer low voltage winding 74 and high-voltage winding 76, the second button, the 8th are pressed
Button, the 11st button, the 14th button.
No-load voltage ratio between measurement 73 low pressure winding 74 of third section transformer and high-voltage winding 76, presses third button, the tenth
Three buttons, the 14th button.
No-load voltage ratio between measurement first segment transformer 71 measurement winding 75 and high-voltage winding 76, presses the 4th button, the 9th
Button, the tenth button.
When measuring the no-load voltage ratio between the first and second section transformer measurement winding 75 and high-voltage winding 76, the 4th button, the 7th are pressed
Button, the 9th button, the 12nd button.
When measure the first, second and third section transformer measurement winding 75 and high-voltage winding 76 between no-load voltage ratio, press the second button,
7th button, the 8th button, the 9th button, the 14th button.
When measuring the no-load voltage ratio between the second section transformer 72 measurement winding 75 and high-voltage winding 76, the 5th button, the tenth are pressed
One button, the 12nd button.
Embodiment 2
The technical effect and embodiment 1 of device provided by the embodiment of the present invention, realization principle and generation are identical, for letter
It describes, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.
The no-load voltage ratio measuring device of the present embodiment tests potential device 70 for measuring three section tandems, this no-load voltage ratio measuring device
Control mechanism 10 is with 12 corresponding control buttons for testing no-load voltage ratio between different windings.
No-load voltage ratio measuring device as described above is correspondingly connected to three section tandems test potential device 70 first.
Wherein, being defined on the higher connecting terminal of voltage in high-voltage winding 76 is the first extreme son, the lower wiring of voltage
Terminal is the second pole connecting terminal.
Electronic switch nine, electronic switch 11, electronic switch 13 are respectively connected to first segment transformer 71, the second section
Second extreme son of transformer 72, third section transformer 73；By electronic switch ten, electronic switch 12,14 points of electronic switch
It is not connected to the first extreme son of first segment transformer 71, the second section transformer 72, third section transformer 73.
After no-load voltage ratio measuring device is connected to three section tandems test potential device 70, switching machine is controlled by control mechanism 10
Structure 20 executes following any step arranged side by side.
Wherein there is the control button of corresponding S1 to S12, and the control button has the function of crawl on controller.And
It is in the open state when electronic switch is not connected to control command.
S1 measures the no-load voltage ratio between 71 low pressure winding 74 of first segment transformer and high-voltage winding 76, the closure of switch block one, electricity
The closure of sub switch nine, electronic switch ten are closed；
S2, the no-load voltage ratio between the first and second section transformer low voltage winding 74 of measurement and high-voltage winding 76, the closure of switch block one,
The closure of switch block seven, the closure of electronic switch nine, electronic switch 12 are closed；
S3, measures the no-load voltage ratio between the first, second and third section transformer low voltage winding 74 and high-voltage winding 76, and switch block one closes
It closes, the closure of switch block seven, the closure of switch block eight, the closure of electronic switch nine, electronic switch 14 are closed；
S4 measures the no-load voltage ratio between 72 low pressure winding 74 of the second section transformer and high-voltage winding 76, the closure of switch block two, electricity
The closure of sub switch 11, electronic switch 12 are closed；
S5, measure second and third section transformer low voltage winding 74 and high-voltage winding 76 between no-load voltage ratio, switch block two closure,
The closure of switch block eight, the closure of electronic switch 11, electronic switch 14 are closed；
S6 measures the no-load voltage ratio between 73 low pressure winding 74 of third section transformer and high-voltage winding 76, the closure of switch block three, electricity
The closure of sub switch 13, electronic switch 14 are closed；
S7, measurement first segment transformer 71 measure the no-load voltage ratio between winding 75 and high-voltage winding 76, the closure of switch block four, electricity
The closure of sub switch nine, electronic switch ten are closed；
S8, the no-load voltage ratio between the first and second section transformer of measurement measurement winding 75 and high-voltage winding 76, the closure of switch block four,
The closure of switch block seven, the closure of electronic switch nine, electronic switch 12 are closed；
S9, the no-load voltage ratio between the first, second and third section transformer of measurement measurement winding 75 and high-voltage winding 76, switch block two close
It closes, the closure of switch block seven, the closure of switch block eight, the closure of electronic switch nine, electronic switch 14 are closed；
S10, the no-load voltage ratio between the second section transformer 72 of measurement measurement winding 75 and high-voltage winding 76, the closure of switch block five,
The closure of electronic switch 11, electronic switch 12 are closed；
S11, measure second and third section transformer measurement winding 75 and high-voltage winding 76 between no-load voltage ratio, switch block five closure,
The closure of switch block eight, the closure of electronic switch 11, electronic switch 14 are closed；
S12, the no-load voltage ratio between measurement third section transformer 73 measurement winding 75 and high-voltage winding 76, the closure of switch block six,
The closure of electronic switch 13, electronic switch 14 are closed.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of no-load voltage ratio measuring device of tandem test potential device, the tandem test potential device includes that the test of several sections becomes
Depressor, it is each to save testing transformer respectively all with low pressure winding, high-voltage winding and measurement winding；
It is characterized in that：The no-load voltage ratio measuring device includes：Input power cord, output power line, no-load voltage ratio measuring instrument, switching mechanism
And control mechanism；
The no-load voltage ratio measuring instrument is used to test the voltage change ratio of the input power cord Yu the output power line；
Switching mechanism includes the first electronic switch assembly of several groups, and the first electronic switch assembly described in several groups is respectively to will be each
The low pressure winding of section testing transformer is connected to input power cord；
Switching mechanism includes the second electronic switch assembly of several groups, and the second electronic switch assembly described in several groups is respectively to will be each
The measurement winding of section transformer is connected to input power cord；
Switching mechanism includes several groups third electronic switch assembly, and third electronic switch assembly described in several groups is respectively to adjacent
Cascade arrangement between two section transformers；
Switching mechanism includes several the 4th electronic switches, several described 4th electronic switches become to test each section respectively
The output terminal of the high-voltage winding of depressor is connected to output power line；
Control mechanism is for controlling those first electronic switch assemblies, those second electronic switch assemblies, those third electronic cuttings
Close the open and-shut mode of component and those the 4th electronic switches.
2. a kind of no-load voltage ratio measuring device of tandem test potential device according to claim 1, it is characterised in that：The string
Grade test potential device includes first segment transformer, the second section transformer and third section transformer；
First electronic switch assembly described in several groups includes the switch block one connecting with first segment transformer, with the second section transformation
The switch block two of device connection, the switch block three being connect with third section transformer；
Several described second electronic switch assemblies include the switch block four connecting with first segment transformer, with the second section transformation
The switch block five of device connection；The switch block six being connect with third section transformer；
Several described third electronic switch assemblies include the switch being connected between first segment transformer and the second section transformer
Component seven, the switch block eight being connected between the second section transformer and third section transformer；
Several the 4th electronic switches include connecting electronic switch nine with the output terminal of the high-voltage winding of each section transformer respectively
To electronic switch 14.
3. a kind of no-load voltage ratio measuring device of tandem test potential device according to claim 2, it is characterised in that：The control
Mechanism processed is PLC controller.
4. a kind of no-load voltage ratio measuring device of tandem test potential device according to claim 3, it is characterised in that：It is described
There is the first button, the second button for control switch component two for control switch component one in PLC controller, be used for
The third button of control switch component three, for the 4th button of control switch component four, for control switch component five
Five buttons are used for control switch for the 7th button of control switch component seven for the 6th button of control switch component six
8th button of component eight, and be respectively used to control electronic switch nine and pressed to the 9th button of electronic switch 14 to the 14th
Button.
5. a kind of no-load voltage ratio measuring device of tandem test potential device according to claim 3 or 4, it is characterised in that：Also
Including rectifying dropping equipment, the rectification dropping equipment is used for the PLC controller and the input power cord power supply.
6. a kind of no-load voltage ratio measurement method of tandem test potential device, tests potential device, feature for measuring three section tandems
It is：No-load voltage ratio measuring device as claimed in claim 2 is correspondingly connected to three section tandems test potential device；
Wherein, being defined on the higher connecting terminal of voltage in high-voltage winding is the first extreme son, and the lower connecting terminal of voltage is
Second pole connecting terminal；
Electronic switch nine, electronic switch 11, electronic switch 13 are respectively connected to first segment transformer, the second section transformation
Second extreme son of device, third section transformer；Electronic switch ten, electronic switch 12, electronic switch 14 are respectively connected to
First segment transformer, the second section transformer, third section transformer the first extreme son；
No-load voltage ratio measuring device be connected to three section tandems test potential device after, by control mechanism control switching mechanism execute with
Under any step arranged side by side：
S1, measures the no-load voltage ratio between first segment transformer low voltage winding and high-voltage winding, and the closure of switch block one, electronic switch nine close
It closes, electronic switch ten is closed；
S2 measures the no-load voltage ratio between the first and second section transformer low voltage winding and high-voltage winding, the closure of switch block one, switch block
Seven closures, the closure of electronic switch nine, electronic switch 12 are closed；
S3 measures the no-load voltage ratio between the first, second and third section transformer low voltage winding and high-voltage winding, the closure of switch block one, switching group
The closure of part seven, the closure of switch block eight, the closure of electronic switch nine, electronic switch 14 are closed；
S4 measures the no-load voltage ratio between the second section transformer low voltage winding and high-voltage winding, the closure of switch block two, electronic switch 11
Closure, electronic switch 12 are closed；
S5 measures the no-load voltage ratio between second and third section transformer low voltage winding and high-voltage winding, the closure of switch block two, switch block
Eight closures, the closure of electronic switch 11, electronic switch 14 are closed；
S6 measures the no-load voltage ratio between third section transformer low voltage winding and high-voltage winding, the closure of switch block three, electronic switch 13
Closure, electronic switch 14 are closed；
S7, the no-load voltage ratio between measurement first segment transformer measurement winding and high-voltage winding, the closure of switch block four, electronic switch nine close
It closes, electronic switch ten is closed；
S8, the no-load voltage ratio between the first and second section transformer of measurement measurement winding and high-voltage winding, the closure of switch block four, switch block
Seven closures, the closure of electronic switch nine, electronic switch 12 are closed；
S9, the no-load voltage ratio between the first, second and third section transformer of measurement measurement winding and high-voltage winding, the closure of switch block two, switching group
The closure of part seven, the closure of switch block eight, the closure of electronic switch nine, electronic switch 14 are closed；
S10, the no-load voltage ratio between the second section transformer of measurement measurement winding and high-voltage winding, the closure of switch block five, electronic switch ten
One closure, electronic switch 12 are closed；
S11 measures the no-load voltage ratio between second and third section transformer measurement winding and high-voltage winding, the closure of switch block five, switch block
Eight closures, the closure of electronic switch 11, electronic switch 14 are closed；
S12, the no-load voltage ratio between measurement third section transformer measurement winding and high-voltage winding, the closure of switch block six, electronic switch ten
Three closures, electronic switch 14 are closed.
7. a kind of no-load voltage ratio measurement method of tandem test potential device according to claim 6, it is characterised in that：Electronic cutting
It is in the open state when Guan Wei is connected to control command.
8. a kind of no-load voltage ratio measurement method of tandem test potential device according to claim 7, it is characterised in that：Control machine
There is the control button of corresponding S1 to S12, and the control button has the function of crawl on structure.
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| CN201810639553.XA CN108896948B (en) | 2018-06-20 | 2018-06-20 | Transformation ratio measuring device and method for cascade test transformation equipment |
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| CN201810639553.XA CN108896948B (en) | 2018-06-20 | 2018-06-20 | Transformation ratio measuring device and method for cascade test transformation equipment |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4087701A (en) * | 1977-02-10 | 1978-05-02 | General Electric Company | Transformer cascade for powering electronics on high voltage transmission lines |
| US5276402A (en) * | 1992-02-28 | 1994-01-04 | Hipotronics, Inc. | Three-phase transformer testing method and system |
| JP2007248104A (en) * | 2006-03-14 | 2007-09-27 | Chugoku Electric Power Co Inc:The | Method for determining ratio and polarity of current transformer, and its device |
| CN101059559A (en) * | 2006-04-17 | 2007-10-24 | 中国科学院半导体研究所 | On-line calibration and checking method for current inductor transformation ratio and angle difference |
| CN202110270U (en) * | 2011-04-27 | 2012-01-11 | 国网电力科学研究院 | Integrated standard device for on-site inspection of super/ extra high voltage constant-voltage transformer (CVT) |
| CN102565557A (en) * | 2012-02-22 | 2012-07-11 | 明珠电气有限公司 | Method and device for testing transformation ratio of dry type transformer |
| CN103364754A (en) * | 2013-07-16 | 2013-10-23 | 杭州西湖电子研究所 | Method for automatically measuring direct-current resistor, short-circuit impedance, on-load switch and non-load voltage ratio of transformer |
| CN103390362A (en) * | 2013-07-15 | 2013-11-13 | 国家电网公司 | Transformer intelligent simulation system |
| CN105425076A (en) * | 2015-12-11 | 2016-03-23 | 厦门理工学院 | Method of carrying out transformer fault identification based on BP neural network algorithm |
| CN105807116A (en) * | 2016-05-10 | 2016-07-27 | 国网江苏省电力公司电力科学研究院 | Vehicular automatic conversion device for on-load measurement of body dielectric losses, direct-current resistance and no-load voltage ratio |
| CN207215903U (en) * | 2016-11-15 | 2018-04-10 | 保定市力兴电子设备有限公司 | A kind of DCR of Transformer and transformer voltage ratio group tester |
| CN108181599A (en) * | 2017-12-01 | 2018-06-19 | 国网江西省电力有限公司检修分公司 | A kind of transformer station direct current system punching current transformer, which does not have a power failure, replaces check method |
-
2018
- 2018-06-20 CN CN201810639553.XA patent/CN108896948B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4087701A (en) * | 1977-02-10 | 1978-05-02 | General Electric Company | Transformer cascade for powering electronics on high voltage transmission lines |
| US5276402A (en) * | 1992-02-28 | 1994-01-04 | Hipotronics, Inc. | Three-phase transformer testing method and system |
| JP2007248104A (en) * | 2006-03-14 | 2007-09-27 | Chugoku Electric Power Co Inc:The | Method for determining ratio and polarity of current transformer, and its device |
| CN101059559A (en) * | 2006-04-17 | 2007-10-24 | 中国科学院半导体研究所 | On-line calibration and checking method for current inductor transformation ratio and angle difference |
| CN202110270U (en) * | 2011-04-27 | 2012-01-11 | 国网电力科学研究院 | Integrated standard device for on-site inspection of super/ extra high voltage constant-voltage transformer (CVT) |
| CN102565557A (en) * | 2012-02-22 | 2012-07-11 | 明珠电气有限公司 | Method and device for testing transformation ratio of dry type transformer |
| CN103390362A (en) * | 2013-07-15 | 2013-11-13 | 国家电网公司 | Transformer intelligent simulation system |
| CN103364754A (en) * | 2013-07-16 | 2013-10-23 | 杭州西湖电子研究所 | Method for automatically measuring direct-current resistor, short-circuit impedance, on-load switch and non-load voltage ratio of transformer |
| CN105425076A (en) * | 2015-12-11 | 2016-03-23 | 厦门理工学院 | Method of carrying out transformer fault identification based on BP neural network algorithm |
| CN105807116A (en) * | 2016-05-10 | 2016-07-27 | 国网江苏省电力公司电力科学研究院 | Vehicular automatic conversion device for on-load measurement of body dielectric losses, direct-current resistance and no-load voltage ratio |
| CN207215903U (en) * | 2016-11-15 | 2018-04-10 | 保定市力兴电子设备有限公司 | A kind of DCR of Transformer and transformer voltage ratio group tester |
| CN108181599A (en) * | 2017-12-01 | 2018-06-19 | 国网江西省电力有限公司检修分公司 | A kind of transformer station direct current system punching current transformer, which does not have a power failure, replaces check method |
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|---|---|
| CN108896948B (en) | 2023-03-21 |
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