CN205027855U - Passive insulator flashover fault indicator - Google Patents
Passive insulator flashover fault indicator Download PDFInfo
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- CN205027855U CN205027855U CN201520740177.5U CN201520740177U CN205027855U CN 205027855 U CN205027855 U CN 205027855U CN 201520740177 U CN201520740177 U CN 201520740177U CN 205027855 U CN205027855 U CN 205027855U
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- Prior art keywords
- indicator
- photoelectrical coupler
- optocoupler
- output terminal
- transient suppression
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- 239000012212 insulator Substances 0.000 title claims abstract description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 26
- 229910052710 silicon Inorganic materials 0.000 claims description 26
- 239000010703 silicon Substances 0.000 claims description 26
- 230000001629 suppression Effects 0.000 claims description 22
- 230000001052 transient effect Effects 0.000 claims description 22
- 238000004146 energy storage Methods 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 230000001419 dependent effect Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 239000002707 nanocrystalline material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model provides a passive insulator flashover fault indicator, is including ability device, fairing, control switch device and the electromagnetism indicator asked for. The utility model has the advantages of utilize distribution network phase to earth fault to allow the long period to last operation and the very little characteristics of trouble zero sequence current, through the ability device of asking for that adopts high -magnetic -permeability, acquire the energy and instruct fast faulty insulator from fault current, minimum need 200mA electric current continuously charges and can accomplish the instruction in 70 seconds, neither need additionally provide the power or dispose the battery, energy saving reduce cost, and work is simple, high practicability and high reliability are realized, the installation is convenient non -maintaining, can bear simultaneously the heavy current long period impact and the count that can move 0.5 second at least more than the 5000A in 0.1 second under minimum 50A electric current, consequently can effectively solve in the distribution network because of the insulator flashover lead to single -phase, the heterogeneous earth fault problem of seeking, and be applicable to the power transmission network, offer help for patrolling the line, practice thrift a large amount of human costs and time.
Description
Technical field
The utility model belongs to the insulator arc-over warning indicator equipment technical field in circuit on power system, particularly relate to a kind of being applicable in power network neutral point isolated neutral system because of single-phase or heterogeneous earth fault that insulator arc-over causes, or be applicable to power transmission network insulator arc-over fault, and the passive isolation arcing fault indicator of energy without the need to external power supply can be obtained when breaking down by self-energizing device from electrical network simultaneously.
Background technology
In China, the power outage overwhelming majority that power consumer runs into is because distribution network failure causes, according to statistics, in power distribution network, singlephase earth fault the most easily occurs, account for 80% of sum, the modal reason of one-phase earthing failure in electric distribution network is wherein caused to have: conductor cord disconnection, insulator arc-over etc., comparatively speaking, conductor cord disconnections etc. are easier to by visual observations out, and insulator arc-over is due to higher apart from ground, outward appearance is not obvious, be difficult to judge, and the insulator arc-over that thunderbolt or pollution flashover cause betides mountain area mostly, this makes artificial line walking detection failure extremely difficult especially.The fault detector of power distribution network domestic at present can only failure judgement circuit and section, and can not specific to the insulator of fault, or instruction accuracy is not high, and mostly needs external power supply and configure battery, and with high costs, installation and maintenance bother.Although power transmission network has the fault locator can locating insulator arc-over, error generally more than 500 meters, and cannot use at the power distribution network that branch line is various.Also immature as the application of localization method in power distribution network such as other such as impedance method, S signal injection method, traveling wave methods, the requirement of accurately looking up the fault quickly and easily cannot be met.
Summary of the invention
The problem that the utility model summary solves is for the sub-arcing fault indicator of passive isolation in a kind of circuit on power system, solves a difficult problem for power distribution network insulator arc-over location instruction.
The utility model solves the problems of the technologies described above by the following technical programs:
The sub-arcing fault indicator of a kind of passive isolation, comprises self-energizing device, fairing, gauge tap device and electromagnetism indicator, it is characterized in that,
Described self-energizing device, is made up of the nanocrystalline material iron core of hollow tubular and copper coil wound on it, does not work at ordinary times, when gathering fault induction current by copper coil after insulator arc-over, obtains energy;
Described fairing, be the rectifier bridge of 4 diode compositions, two input ends are connected with the output terminal of copper coil respectively, and output terminal is connected with gauge tap device and electromagnetism indicator, and the AC fault induction current collected is converted to DC current;
Described gauge tap device, by photoelectrical coupler, optocoupler controllable silicon and resistance composition, the anode of photoelectrical coupler is connected with the negative pole of voltage stabilizing diode, the negative electrode of photoelectrical coupler is connected with optocoupler silicon controlled anode, the collector of photoelectrical coupler is connected with the cathode output end of rectifier bridge, the emitter of photoelectrical coupler is connected with the negative pole of voltage stabilizing diode, optocoupler silicon controlled anode is connected with the negative electrode of photoelectrical coupler, optocoupler silicon controlled negative electrode is connected with resistance, optocoupler silicon controlled output terminal is connected with cathode rectifier output terminal and electromagnetism indicator respectively, resistance two ends are connected with the cathode output end of optocoupler silicon controlled negative electrode and rectifier bridge respectively, the first action of photoelectrical coupler, action after optocoupler controllable silicon, by controlling photoelectrical coupler and the conducting of optocoupler silicon controlled, shutoff, makes the work of electromagnetism indicator,
Described electromagnetism indicator, its two ends are connected with the cathode output end of optocoupler silicon controlled output terminal and rectifier bridge direct supply respectively, adopt counting form, can hand-reset, and track walker just can find earth fault by the change in count of visualizer.
As optimization, also have energy storage device, be large bulk capacitance, utilize electric capacity by the energy storage of acquisition, and electric capacity both end voltage increase thereupon, the two ends of described energy storage device connect the DC power output end of described fairing respectively;
As optimization, also have pressure limiting device, be voltage stabilizing diode, its positive pole is connected with rectifier bridge DC power anode output terminal, and anode and the emitter of its negative pole and photoelectrical coupler are connected; When the energy stored by energy storage device is enough for indicator, when namely energy storage device both end voltage rises to setting limit value, pressure limiting device is started working;
As optimization, also has over-pressure safety device, be made up of voltage dependent resistor (VDR) and two Transient Suppression Diodes, wherein the positive pole of the first Transient Suppression Diode is connected with the negative pole of the second Transient Suppression Diode, the negative pole of the first Transient Suppression Diode is connected with the positive pole of the second Transient Suppression Diode, voltage dependent resistor (VDR), the first Transient Suppression Diode, the second Transient Suppression Diode connect and be connected with the output terminal of copper coil, prevent the heavy current impacts such as thunderbolt, shield to whole device;
As optimization, described photoelectrical coupler is PC817 model, and described optocoupler controllable silicon is MOC3023 model;
Described electromagnetism indicator is blue mattress CSK6 type message register.
The utility model has the advantage of and utilize one-phase earthing failure in electric distribution network to allow long period continuous service and the very little feature of fault zero-sequence current, by adopting the self-energizing device of high permeability, from fault current, obtain energy and faulty insulator is indicated fast, minimum needs 200mA continuing current flow to charge can to complete instruction in 70 seconds, not only do not need additionally to provide power supply or configuration battery, economize energy reduces costs, and work is simple, practical reliable, install convenient non-maintaining, can bear simultaneously more than the 5000A big current long period of at least 0.5 second impact and can under minimum 50A electric current in 0.1 second movement counting, therefore can effectively solve in power distribution network because of insulator arc-over cause single-phase, heterogeneous grounding fault problem, and be applicable to power transmission network, for line walking is offered help, save a large amount of human cost and time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model fault detector;
Fig. 2 is the implementing circuit figure of the utility model fault detector.
Embodiment
Below in conjunction with drawings and Examples, further illustrate composition of the present utility model and principle of work.
As shown in Figure 1 and Figure 2, the sub-arcing fault indicator of passive isolation, includes self-energizing device, over-pressure safety device, fairing, energy storage device, pressure limiting device, described gauge tap device and electromagnetism indicator;
Described self-energizing device comprises nanocrystalline material iron core 1 and the copper coil 2 of high permeability, and described nanocrystalline material iron core 1 is hollow tubular structures, is enclosed within the outside of insulator end or tower grounding line during practical application; Described copper coil 2 is wrapped on the sidewall of nanocrystalline iron core 1;
Described over-pressure safety device, be made up of voltage dependent resistor (VDR) 3, Transient Suppression Diode 4 and 5, the positive pole of the first Transient Suppression Diode 4 is connected with the negative pole of the second Transient Suppression Diode 5, the negative pole of the first Transient Suppression Diode 4 is connected with the positive pole of the second Transient Suppression Diode 5, and voltage dependent resistor (VDR) 3, first Transient Suppression Diode 4, second Transient Suppression Diode 5 is also connected with the output terminal of copper coil 2 after connecting;
Described fairing, the rectifier bridge 6 be made up of 4 diodes, two input ends are connected with the output terminal of coil 2 respectively, one end of cathode output end and electric capacity 7, the positive pole of voltage stabilizing diode 8, the collector of photoelectrical coupler 9, an output terminal of optocoupler controllable silicon 10 are connected, and the other end of cathode output end and electric capacity 7, resistance 11, electromagnetism indicator 12 are connected;
Described energy storage device, be large bulk capacitance 7, its two ends connect cathode output end and the cathode output end of rectifier bridge 6 respectively;
Described pressure limiting device, be voltage stabilizing diode 8, positive pole is connected with rectifier bridge 6 cathode output end, and anode, the emitter of negative pole and photoelectrical coupler 9 are connected;
Described gauge tap device, be made up of photoelectrical coupler 9, optocoupler controllable silicon 10 and current-limiting resistance 11, the anode of 9 is connected with the negative pole of voltage stabilizing diode 8, the negative electrode of 9 is connected with the anode of 10, the collector of 9 is connected with the cathode output end of rectifier bridge 6, the transmitter of 9 is connected with the negative pole of stabilivolt 8, the anode of 10 is connected with the negative electrode of 9, the negative electrode of 10 is connected with resistance 11, the output terminal of 10 is connected with cathode rectifier output terminal and electromagnetism indicator 12 respectively, and resistance 11 two ends are connected with the negative electrode of 10 and the cathode output end of rectifier bridge 6 respectively; Photoelectrical coupler is PC817 model, and described optocoupler controllable silicon is MOC3023 model;
Described electromagnetism indicator 12 is blue mattress CSK6 type message register, and two ends are connected with the output terminal of optocoupler controllable silicon 10 and the cathode output end of rectifier bridge 6 respectively.
Principle of work of the present utility model is: the nanocrystalline iron core 1 of self-energizing device is enclosed within insulator end or tower grounding line place, be former limit with insulator end or tower grounding line, as shown in fig. 1, when the earth fault that electric line generation causes because of insulator arc-over, fault current flows through the former limit of self-energizing device, thus alternating current is induced in secondary coil 2, and by voltage dependent resistor (VDR) 3, Transient Suppression Diode 4 and 5 limits big current, after rectifier bridge 6 rectification, electric capacity 7 is charged, electric capacity 7 both end voltage is made to increase, when the voltage of electric capacity 7 reaches the limit value of voltage stabilizing diode 8, the anode of photoelectrical coupler 9 and negative electrode conducting, collector and emitter conducting simultaneously, by voltage stabilizing diode 8 short circuit, then the anode of optocoupler controllable silicon 10 and negative electrode conducting, two output terminal conductings of 10 simultaneously, electric capacity 7 pairs of electromagnetism indicators 12 are discharged, rapid action after electromagnetism indicator 12 is energized, complete the task of indication fault.After earth fault is got rid of, the former limit of self-energizing device does not have fault current to flow through, and photoelectrical coupler 9, optocoupler controllable silicon 10 recover off state, to treat to work next time.When track walker observes the change in count of electromagnetism indicator, just clearly location of fault can be found.
Claims (6)
1. the sub-arcing fault indicator of passive isolation, comprises self-energizing device, fairing, gauge tap device and electromagnetism indicator, it is characterized in that,
Described self-energizing device, is made up of the nanocrystalline material iron core of hollow tubular and copper coil wound on it, does not work at ordinary times, when gathering fault induction current by copper coil after insulator arc-over, obtains energy;
Described fairing, be the rectifier bridge of 4 diode compositions, two input ends are connected with the output terminal of copper coil respectively, and output terminal is connected with gauge tap device and electromagnetism indicator, and the AC fault induction current collected is converted to DC current;
Described gauge tap device, by photoelectrical coupler, optocoupler controllable silicon and resistance composition, the anode of photoelectrical coupler is connected with the negative pole of voltage stabilizing diode, the negative electrode of photoelectrical coupler is connected with optocoupler silicon controlled anode, the collector of photoelectrical coupler is connected with the cathode output end of rectifier bridge, the emitter of photoelectrical coupler is connected with the negative pole of voltage stabilizing diode, optocoupler silicon controlled anode is connected with the negative electrode of photoelectrical coupler, optocoupler silicon controlled negative electrode is connected with resistance, optocoupler silicon controlled output terminal is connected with cathode rectifier output terminal and electromagnetism indicator respectively, resistance two ends are connected with the cathode output end of optocoupler silicon controlled negative electrode and rectifier bridge respectively, the first action of photoelectrical coupler, action after optocoupler controllable silicon, by controlling photoelectrical coupler and the conducting of optocoupler silicon controlled, shutoff, makes the work of electromagnetism indicator,
Described electromagnetism indicator, its two ends are connected with the cathode output end of optocoupler silicon controlled output terminal and rectifier bridge direct supply respectively, adopt counting form, can hand-reset, and track walker just can find earth fault by the change in count of visualizer.
2. the sub-arcing fault indicator of passive isolation as claimed in claim 1, it is characterized in that, also has energy storage device, for large bulk capacitance, utilize electric capacity by the energy storage of acquisition, and electric capacity both end voltage increases thereupon, the two ends of described energy storage device connect the DC power output end of described fairing respectively.
3. the sub-arcing fault indicator of passive isolation as claimed in claim 1, is characterized in that, also have pressure limiting device, be voltage stabilizing diode, its positive pole is connected with rectifier bridge DC power anode output terminal, and anode and the emitter of its negative pole and photoelectrical coupler are connected; When the energy stored by energy storage device is enough for indicator, when namely energy storage device both end voltage rises to setting limit value, pressure limiting device is started working.
4. the sub-arcing fault indicator of passive isolation as claimed in claim 1; it is characterized in that; also has over-pressure safety device; be made up of voltage dependent resistor (VDR) and two Transient Suppression Diodes; wherein the positive pole of the first Transient Suppression Diode is connected with the negative pole of the second Transient Suppression Diode; the negative pole of the first Transient Suppression Diode is connected with the positive pole of the second Transient Suppression Diode, voltage dependent resistor (VDR), the first Transient Suppression Diode, the second Transient Suppression Diode connect and be connected with the output terminal of copper coil.
5. the sub-arcing fault indicator of passive isolation as claimed in claim 1, it is characterized in that, described photoelectrical coupler is PC817 model, and described optocoupler controllable silicon is MOC3023 model.
6. the sub-arcing fault indicator of passive isolation as claimed in claim 1, it is characterized in that, described electromagnetism indicator is blue mattress CSK6 type message register.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520740177.5U CN205027855U (en) | 2015-09-23 | 2015-09-23 | Passive insulator flashover fault indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520740177.5U CN205027855U (en) | 2015-09-23 | 2015-09-23 | Passive insulator flashover fault indicator |
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| Publication Number | Publication Date |
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| CN205027855U true CN205027855U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520740177.5U Expired - Fee Related CN205027855U (en) | 2015-09-23 | 2015-09-23 | Passive insulator flashover fault indicator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866591A (en) * | 2016-05-17 | 2016-08-17 | 上海紫通信息科技有限公司 | Power equipment output signal acquisition circuit |
| CN106876053A (en) * | 2017-02-28 | 2017-06-20 | 西安交通大学 | A kind of utilization flashover takes the intelligent trouble alarm insulator of energy |
| WO2017152634A1 (en) * | 2016-03-11 | 2017-09-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for evaluating flashover fault of ceramic column type circuit breaker of 220kv and above |
-
2015
- 2015-09-23 CN CN201520740177.5U patent/CN205027855U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152634A1 (en) * | 2016-03-11 | 2017-09-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for evaluating flashover fault of ceramic column type circuit breaker of 220kv and above |
| CN105866591A (en) * | 2016-05-17 | 2016-08-17 | 上海紫通信息科技有限公司 | Power equipment output signal acquisition circuit |
| CN106876053A (en) * | 2017-02-28 | 2017-06-20 | 西安交通大学 | A kind of utilization flashover takes the intelligent trouble alarm insulator of energy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20170923 |