CN204068225U - Intelligent distribution network self-healing control system - Google Patents
Intelligent distribution network self-healing control system Download PDFInfo
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- CN204068225U CN204068225U CN201320893801.6U CN201320893801U CN204068225U CN 204068225 U CN204068225 U CN 204068225U CN 201320893801 U CN201320893801 U CN 201320893801U CN 204068225 U CN204068225 U CN 204068225U
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- 238000012544 monitoring process Methods 0.000 claims description 3
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- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 206010003830 Automatism Diseases 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 238000012502 risk assessment Methods 0.000 description 1
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Abstract
The utility model discloses a kind of intelligent distribution network self-healing control system, this system comprises the first wire-outgoing breaker QF1 of the first transformer station be connected successively, block switch B, C, D, interconnection switch CB, block switch E, F, the second wire-outgoing breaker QF2 of the second transformer station; Described interconnection switch CB and and each block switch be all can cut off load current but can not the on-load switch of cutting-off of short-circuit electric current, first wire-outgoing breaker and the second wire-outgoing breaker be all can cut off load current again can the primary cut-out of cutting-off of short-circuit circuit, described first wire-outgoing breaker QF1, block switch B, block switch C, block switch D, interconnection switch CB, block switch E, block switch F, the second wire-outgoing breaker QF2 are provided with intelligent controller separately.The utility model can timely and effective localizing faults section, and automatic separating fault section and to normal reach automatic recovery of power supply.
Description
Technical field
The utility model intelligent distribution network technical field, is specifically related to a kind of intelligent distribution network self-healing control system and method for work thereof.
Background technology
The domestic 10kV power distribution network overwhelming majority adopts small current neutral grounding mode, comprises isolated neutral and neutral by arc extinction coil grounding mode.Along with the prolongation of circuit running time, the ageing of insulation resistance of the equipment such as the insulator on overhead transmission line, switch, transformer reduces, underground cable circuit itself is also faced with corrosion and ageing, especially be easily subject to the harmful effect of ground construction, can cause coupled various electrical switchgears that unexpected risk occurs.Once insulation resistance may cause leakage small area analysis after reducing, there are two kinds of hidden failure situations in small current neutral grounding system, the first is short trouble, comprises line to line fault, two-phase grounding fault and three-phase shortcircuit; The second is single phase ground fault.The operational mode of current China is, when after the fault that is short-circuited, is positioned at the wire-outgoing breaker tripping operation isolation large-area power-cuts fault of transformer station.When after generation single phase ground fault, can operate with failure a period of time, there is very large risk in it, as fire, personal safety etc., if permanent earth fault, manually or automated manner disconnect wire-outgoing breaker isolated fault.There are following three problems in this troubleshooting mode:
The first, fault or single phase ground fault as long as certain position of circuit is short-circuited, the wire-outgoing breaker at circuit top action will disconnect whole piece circuit.Because distribution line is radial structure, load is in multiple positions of circuit, and therefore this troubleshooting mode makes not have out of order section also to have a power failure, and have impact on power supply reliability and economy greatly.
The second, power distribution network is short-circuited after fault or single phase ground fault to be needed find fault point as early as possible and fix a breakdown, fault-location problem that Here it is.This problem perplexs operation department for a long time, now also in the method adopting artificial line walking, extends fault time, all causes very large economic loss to user and power supply department.
3rd, the real time information of power distribution network can only obtain in transformer station, management and running personnel can not grasp the situation of each load branch, effective analysis and assessment can not be carried out to the operation risk of circuit, quick diagnosis also can not be processed when the operation conditions of the some branches of circuit is abnormal, cause distribution network reliability to decline.
In order to solve above-mentioned three problems, improve reliability and the economy of national power distribution network, real-time live is badly in need of a kind of powerful new distribution network operation risk assessment self-healing control administrating system.
Utility model content
The purpose of this utility model is to provide one can timely and effective localizing faults section, and automatic separating fault section and the intelligent distribution network self-healing control system to normal reach automatic power.
The technical scheme realizing the utility model object is: a kind of intelligent distribution network self-healing control system, comprises the second wire-outgoing breaker QF2 of the first wire-outgoing breaker QF1, the block switch B of the first transformer station be connected successively, block switch C, block switch D, interconnection switch CB, block switch E, block switch F, the second transformer station, described interconnection switch CB and and each block switch be all can cut off load current but can not the on-load switch of cutting-off of short-circuit electric current, first wire-outgoing breaker and the second wire-outgoing breaker be all can cut off load current again can the primary cut-out of cutting-off of short-circuit circuit, described first wire-outgoing breaker QF1, block switch B, block switch C, block switch D, interconnection switch CB, block switch E, block switch F, second wire-outgoing breaker QF2 of the second transformer station is provided with intelligent controller separately, described intelligent controller comprises voltage sensor for monitoring self terminal voltage and GPRS communication unit.
Wire-outgoing breaker single shot reclosing of the present utility model finds fault section, secondary reclosing restores electricity to non-faulting section, namely also the utility model can timely and effective localizing faults section, automatic separating fault section, and to normal reach automatic power, be one of the important measures ensureing power grid security, stable and economical operation technically, there is huge Social and economic benef@.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of intelligent distribution network self-healing control system in the utility model;
Fig. 2 for C-D section in the self-healing control of intelligent distribution network shown in Fig. 1 system be short-circuited fault time a kind of structural representation.
Embodiment
(embodiment 1, intelligent distribution network self-healing control system)
The present embodiment is a kind of intelligent distribution network self-healing control system, as shown in Figure 1, the second wire-outgoing breaker QF2 of the first wire-outgoing breaker QF1, the block switch B of the first transformer station be connected successively, block switch C, block switch D, interconnection switch CB, block switch E, block switch F, the second transformer station is comprised, described interconnection switch CB and and each block switch be all can cut off load current but can not the on-load switch of cutting-off of short-circuit electric current, first wire-outgoing breaker and the second wire-outgoing breaker be all can cut off load current again can the primary cut-out of cutting-off of short-circuit circuit, described first wire-outgoing breaker QF1, block switch B, block switch C, block switch D, interconnection switch CB, block switch E, block switch F, second wire-outgoing breaker QF2 of the second transformer station is provided with intelligent controller separately, described intelligent controller comprises voltage sensor for monitoring self terminal voltage and GPRS communication unit.
In the present embodiment, circuit between first wire-outgoing breaker QF1 to block switch B is called QF1-B section, circuit between block switch B and block switch C is called B-C section, circuit between block switch C and block switch D is called C-D section, and the circuit between block switch D and interconnection switch CB is called D-CB section.
The method of work of the present embodiment, comprises following job step:
1. first preset to the controller of each block switch three operate times: (1) X time, be set to 7 seconds, after the intelligent controller of block switch detects that there is voltage one end, close a floodgate after postponing the X time; (2) the Y time, be set to 5 seconds, after block switch closes a floodgate, the intelligent controller of block switch detects loss of voltage within the Y time, then send locking order and no longer close a floodgate; (3) the Z time, be set to 300 milliseconds, after the intelligent controller of block switch detects that there is residual voltage one end, loss of voltage within the Z time, then send locking order and no longer close a floodgate;
2., as shown in Figure 2, when short trouble occurs in C-D section circuit, the first wire-outgoing breaker QF1 being in interconnection switch the same side circuit with C-D section trips because of short circuit, and block switch B, block switch C, block switch D disconnect because of decompression simultaneously;
The present embodiment to be short-circuited fault for C-D section, but be not limited to C-D section be short-circuited fault could self-healing, in fact, those skilled in the art can reason out other section by foundation the present embodiment and to be short-circuited fault
3. the first wire-outgoing breaker QF1 after time delay first time reclosing, block switch B, block switch C, block switch D order the time delay X time close a floodgate;
If 4. failure vanishes, then each block switch normally closes a floodgate, and QF1-D section circuit resumes operation;
If fault is permanent, after block switch C closes a floodgate, because short circuit causes the first wire-outgoing breaker QF1 again to trip again, block switch B, block switch C, block switch D disconnect because of decompression simultaneously; Now, block switch C intelligent controller due to detect close a floodgate after voltage be less than the Y time and disappear, so send locking order; Block switch D due to after detecting that there is voltage one end, and within the Z time loss of voltage, also send locking order; The block switch C of locking simultaneously and block switch D is by GPRS communications platform, and send information to remote server, server directly orients fault section after obtaining information;
5. the first wire-outgoing breaker QF1 second time reclosing after time delay, the block switch B time delay X time closes a floodgate, because block switch C locking is no longer closed a floodgate, therefore QF1-C section line powering, faulty section C-D section circuit automatism isolation;
6. interconnection switch CB does not detect the power supply of a side all the time in default timing course, after certain time delay, interconnection switch CB closes, and because block switch D locking is no longer closed a floodgate, therefore the second wire-outgoing breaker QF2 passes through interconnection switch CB to D-CB section line powering.
Like this, the automatism isolation of fault section and restoring electricity of normal reach is achieved through above-mentioned six steps.
In the present embodiment, wire-outgoing breaker needs to carry out twice reclosing, and the object of reclosing finds fault section for the first time, and the object of second time reclosing restores electricity.The block switch of final locking is by the GPRS communications platform in its functional control device, send information to remote server, server is direct localizing faults section after obtaining information, and is supplied to management and running personnel, greatly reduce the time of fault location, improve the efficiency of fixing a breakdown.
Above-mentioned method of work, mainly for short trouble, comprises line to line fault, two-phase grounding fault and three-phase shortcircuit.
After fixing a breakdown, operations staff adopts GPRS remote controlled manner or manual control mode on the spot, is closed by the block switch of locking, again recovers the normal operation of whole piece circuit.
The wire-outgoing breaker single shot reclosing of the present embodiment finds fault section, secondary reclosing restores electricity to non-faulting section, namely also the present embodiment can timely and effective localizing faults section, automatic separating fault section, and to normal reach automatic power, be one of the important measures ensureing power grid security, stable and economical operation technically, there is huge Social and economic benef@.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to connotation of the present utility model the apparent change of extending out or variation still belong to protection range of the present utility model.
Claims (1)
1. an intelligent distribution network self-healing control system, is characterized in that: the second wire-outgoing breaker (QF2) comprising first wire-outgoing breaker (QF1) of the first transformer station be connected successively, block switch (B), block switch (C), block switch (D), interconnection switch (CB), block switch (E), block switch (F), the second transformer station, described interconnection switch (CB) and and each block switch be all can cut off load current but can not the on-load switch of cutting-off of short-circuit electric current, first wire-outgoing breaker and the second wire-outgoing breaker be all can cut off load current again can the primary cut-out of cutting-off of short-circuit circuit, described first wire-outgoing breaker (QF1), block switch (B), block switch (C), block switch (D), interconnection switch (CB), block switch (E), block switch (F), second wire-outgoing breaker (QF2) of the second transformer station is provided with intelligent controller separately, described intelligent controller comprises voltage sensor for monitoring self terminal voltage and GPRS communication unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320893801.6U CN204068225U (en) | 2013-12-31 | 2013-12-31 | Intelligent distribution network self-healing control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320893801.6U CN204068225U (en) | 2013-12-31 | 2013-12-31 | Intelligent distribution network self-healing control system |
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| CN204068225U true CN204068225U (en) | 2014-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746353A (en) * | 2013-12-31 | 2014-04-23 | 宏秀电气有限公司 | Self-healing control system of intelligent distribution network and working method thereof |
| CN105137294A (en) * | 2015-09-25 | 2015-12-09 | 国网山东省电力公司济南供电公司 | Voltage type power distribution system single-phase grounding fault elimination method |
-
2013
- 2013-12-31 CN CN201320893801.6U patent/CN204068225U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746353A (en) * | 2013-12-31 | 2014-04-23 | 宏秀电气有限公司 | Self-healing control system of intelligent distribution network and working method thereof |
| CN105137294A (en) * | 2015-09-25 | 2015-12-09 | 国网山东省电力公司济南供电公司 | Voltage type power distribution system single-phase grounding fault elimination method |
| CN105137294B (en) * | 2015-09-25 | 2018-08-31 | 国网山东省电力公司济南供电公司 | A kind of voltage-type distribution system single phase earthing troubleshooting methodology |
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