CN104037762A - Distribution line section switch control method - Google Patents
Distribution line section switch control method Download PDFInfo
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- CN104037762A CN104037762A CN201410297188.0A CN201410297188A CN104037762A CN 104037762 A CN104037762 A CN 104037762A CN 201410297188 A CN201410297188 A CN 201410297188A CN 104037762 A CN104037762 A CN 104037762A
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- block switch
- standby
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- fault point
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a distribution line section switch control method. A section switch controller is provided with no-voltage protection and spare power automatic switching functions, when a line breaks down, the voltage leap characteristics are used by the controller, transformer substation outgoing line protector act, the line loses power, section switches performs no-voltage protection actions, the transformer substation outgoing line protectors are reclosed, the section switches coincide in sequence until the section switch closest to a fault point is switched to the fault line, the section switch detects overcurrent information and closes the shutting spare switch function, the outgoing line protectors act again and coincide in a time delay mode, the no-voltage spare switching process is repeated by the section switches until the section switch which shuts the spare switching function and is the closest to the fault point, and the fault isolation of the fault point is achieved. The method shortens the time for restoring power supply, and impact to equipment is small.
Description
Technical field
The present invention relates to power automation technical field, particularly a kind of distribution line block switch control method.
Background technology
Along with the high speed development of Chinese national economy, town and country power load grows with each passing day, and people have higher requirement to power supply reliability and power supply quality.At present, account for the most rural power grids of China's electrical network and small and medium-sized cities electrical network and also generally use without passage coincidence pattern, realize basic Fault Isolation and the function that restores electricity.This traditional on-off controller coincidence algorithm, utilizes o-volt protection, current interlock and prepared auto restart function, when isolated fault, need to repeatedly impact, and recovery time is long, large to systematic influence.
Summary of the invention
The object of the present invention is to provide a kind of distribution line block switch control method, the method has shortened the time restoring electricity, and impacts little to equipment.
For achieving the above object, technical scheme of the present invention is: a kind of distribution line block switch control method, block switch controller arranges o-volt protection and prepared auto restart function, in the time of line failure, controller utilizes voltage jump characteristic, by transformer station's outlet protection action, circuit dead electricity, block switch o-volt protection action, transformer station's outlet protection reclosing, block switch order overlaps, throw on faulty line until the block switch of close fault point is standby, this block switch detected stream information the standby function of throwing of locking, outlet protection is action time delay coincidence again, block switch repeats above-mentioned decompression standby and throws process, until the block switch of the standby the most close fault point of throwing function of locking, complete the Fault Isolation of fault point one side, equally, first the controller of fault opposite side, be decompression controller decompression protection action after transformer station outlet protection action, and the controller of close fault point detects after mutation voltage, locking prepared auto restart function, other do not detect the controller of mutation voltage, start standby throwing successively from interconnection switch, fault section isolation, and non-fault zone restores electricity.
Above-mentioned distribution line block switch control method, comprises the steps:
Step 1: the fault point fault that is short-circuited, circuit breaker CB1 overcurrent protection action, circuit power-off;
Step 2: block switch F1, the F2, the F3 that are powered by power supply 1 detect after decompression, o-volt protection action, block switch F1, F2, F3 separating brake;
Step 3: reclosing after circuit breaker CB1 time delay;
Step 4: block switch F1, F2 detect that a side has pressure, a side with no pressure successively, meet standby throwing condition, carry out standby throwing;
Step 5: because fault point exists, block switch F2, for after throwing on faulty line, detected stream information, locking is standby throws, and standby the throwing on faulty line of block switch F2 causes that circuit breaker CB1 protects action, circuit power-off simultaneously;
Step 6: after block switch F3 o-volt protection, detect that a side voltage recovers and disappears in 3S, meet mutation voltage barring condition, the standby function of throwing of locking;
Step 7: after circuit breaker CB1 protection action, time delay reclosing again;
Step 8: block switch F2 detects that a side has pressure, a side with no pressure, though meet standby throwing condition, because fault point exists, the standby function of throwing of block switch F2, by overcurrent locking, in the state of opening a sluice gate, is no longer carried out the standby instruction of throwing;
Step 9: the opposite side of fault point, powered by power supply 2, block switch F4 detects that a side has pressure, a side is with no pressure, meets standby throwing condition, carries out standby throwing;
Step 10: block switch F4 is standby throw after, block switch F3 meets a side has pressure, a side with no pressure, meets standby throwing condition, but throws function by voltage jump locking because block switch F3 is standby, in the state of opening a sluice gate, no longer carries out the standby instruction of throwing;
Step 11: block switch F2, F3 are in gate-dividing state, and fault point is successfully isolated, block switch F1, F4, F5 are in "on" position, and non-fault zone restores electricity.
Compared with prior art, the invention has the beneficial effects as follows: traditional on-off controller coincidence algorithm, utilize o-volt protection, current interlock and prepared auto restart function, when isolated fault, need to repeatedly impact, recovery time is long, large to systematic influence.The control method of the present invention's design, utilizes sudden change blocking function, in the time that line failure overlaps, can utilize the standby throwing of voltage jump signal block, both shorten the time restoring electricity, prevent from again being repeatedly incorporated on faulty line, equipment is impacted, be conducive to power grid operation.
Brief description of the drawings
Fig. 1 is that in the embodiment of the present invention, fault supplies electrical schematic before occurring.
Fig. 2 is that in the embodiment of the present invention, fault supplies electrical schematic after occurring.
Fig. 3 is the realization flow figure of the embodiment of the present invention.
Embodiment
Distribution line block switch control method of the present invention, block switch controller arranges o-volt protection and prepared auto restart function, in the time of line failure, controller utilizes voltage jump characteristic, by transformer station's outlet protection action, circuit dead electricity, block switch o-volt protection action, transformer station's outlet protection reclosing, block switch order overlaps, throw on faulty line until the block switch of close fault point is standby, this block switch detected stream information the standby function of throwing of locking, outlet protection is action time delay coincidence again, block switch repeats above-mentioned decompression standby and throws process, until the block switch of the standby the most close fault point of throwing function of locking, complete the Fault Isolation of fault point one side, equally, first the controller of fault opposite side, be decompression controller decompression protection action after transformer station outlet protection action, and the controller of close fault point detects after mutation voltage, locking prepared auto restart function, other do not detect the controller of mutation voltage, start standby throwing successively from interconnection switch, fault section isolation, and non-fault zone restores electricity.
Above-mentioned distribution line block switch control method, comprises the steps:
Step 1: the fault point fault that is short-circuited, circuit breaker CB1 overcurrent protection action, circuit power-off;
Step 2: block switch F1, the F2, the F3 that are powered by power supply 1 detect after decompression, o-volt protection action, block switch F1, F2, F3 separating brake;
Step 3: reclosing after circuit breaker CB1 time delay;
Step 4: block switch F1, F2 detect that a side has pressure, a side with no pressure successively, meet standby throwing condition, carry out standby throwing;
Step 5: because fault point exists, block switch F2, for after throwing on faulty line, detected stream information, locking is standby throws, and standby the throwing on faulty line of block switch F2 causes that circuit breaker CB1 protects action, circuit power-off simultaneously;
Step 6: after block switch F3 o-volt protection, detect that a side voltage recovers and disappears in 3S, meet mutation voltage barring condition, the standby function of throwing of locking;
Step 7: after circuit breaker CB1 protection action, time delay reclosing again;
Step 8: block switch F2 detects that a side has pressure, a side with no pressure, though meet standby throwing condition, because fault point exists, the standby function of throwing of block switch F2, by overcurrent locking, in the state of opening a sluice gate, is no longer carried out the standby instruction of throwing;
Step 9: the opposite side of fault point, powered by power supply 2, block switch F4 detects that a side has pressure, a side is with no pressure, meets standby throwing condition, carries out standby throwing;
Step 10: block switch F4 is standby throw after, block switch F3 meets a side has pressure, a side with no pressure, meets standby throwing condition, but throws function by voltage jump locking because block switch F3 is standby, in the state of opening a sluice gate, no longer carries out the standby instruction of throwing;
Step 11: block switch F2, F3 are in gate-dividing state, and fault point is successfully isolated, block switch F1, F4, F5 are in "on" position, and non-fault zone restores electricity.
Below in conjunction with drawings and the specific embodiments, the invention will be further described.
As shown in Figure 1-2: at Double-End Source, in the distribution line of open loop power supply, F1-F5 is block switch, a controller of each switch configuration, CB1 and CB2 are transformer station's wire-outgoing breaker, and black surround switch represents that switch is in "on" position, and white edge switch represents that switch is in gate-dividing state, F4 is operated in gate-dividing state at ordinary times as interconnection switch, and F1, F2, F3, F5 are operated in "on" position when flat.
As shown in Figure 1: in the time that fault point is short-circuited fault; circuit breaker CB1 overcurrent protection action, circuit power-off, block switch F1, the F2, the F3 that are now powered by power supply 1 detect after decompression by controller; carry out successively o-volt protection action, block switch F1, F2, F3 separating brake.
As shown in Figure 3, distribution line block switch control method of the present invention specifically comprises step:
Step 1: reclosing after circuit breaker CB1 time delay, block switch F1, F2 detect that respectively a side has pressure, a side with no pressure successively, meet standby throwing condition, carry out standby throwing;
Because fault point exists, block switch F2, for after throwing on faulty line, detected stream information, and locking is standby throws, and standby the throwing on faulty line of block switch F2 can cause that circuit breaker CB1 second protection moves, circuit power-off simultaneously;
After block switch F3 o-volt protection action, detect that a side voltage recovers and disappears at the appointed time, meet mutation voltage barring condition, the standby function of throwing of locking;
After killer switch CB1 protection action, time delay reclosing again;
Block switch F2 detects that a side has pressure, a side with no pressure, though meet standby throwing condition, because fault point exists, block switch F2 is standby throws function overcurrent locking, in the state of opening a sluice gate, no longer carries out the standby instruction of throwing;
The opposite side of fault point, is powered by power supply 2, and block switch F4 detects that a side has pressure, a side with no pressure, meets standby throwing condition, carries out standby throwing;
Block switch F4 is standby throw after, block switch F3 detects that a side has pressure, a side with no pressure, meets standby throwing condition, but throws function by voltage jump locking because block switch F3 is standby, in the state of opening a sluice gate, no longer carries out the standby instruction of throwing;
As shown in Figure 2, block switch F1, F4, F5 close a floodgate, block switch F2, F3 separating brake, and fault point is successfully isolated, and non-fault zone restores electricity.
Be more than preferred embodiment of the present invention, all changes of doing according to technical solution of the present invention, when the function producing does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (2)
1. a distribution line block switch control method, it is characterized in that, block switch controller arranges o-volt protection and prepared auto restart function, in the time of line failure, controller utilizes voltage jump characteristic, by transformer station's outlet protection action, circuit dead electricity, block switch o-volt protection action, transformer station's outlet protection reclosing, block switch order overlaps, throw on faulty line until the block switch of close fault point is standby, this block switch detected stream information the standby function of throwing of locking, outlet protection is action time delay coincidence again, block switch repeats above-mentioned decompression standby and throws process, until the block switch of the standby the most close fault point of throwing function of locking, complete the Fault Isolation of fault point one side, equally, first the controller of fault opposite side, be decompression controller decompression protection action after transformer station outlet protection action, and the controller of close fault point detects after mutation voltage, locking prepared auto restart function, other do not detect the controller of mutation voltage, start standby throwing successively from interconnection switch, fault section isolation, and non-fault zone restores electricity.
2. a kind of distribution line block switch control method according to claim 1, is characterized in that, comprises the steps:
Step 1: the fault point fault that is short-circuited, circuit breaker CB1 overcurrent protection action, circuit power-off;
Step 2: block switch F1, the F2, the F3 that are powered by power supply 1 detect after decompression, o-volt protection action, block switch F1, F2, F3 separating brake;
Step 3: reclosing after circuit breaker CB1 time delay;
Step 4: block switch F1, F2 detect that a side has pressure, a side with no pressure successively, meet standby throwing condition, carry out standby throwing;
Step 5: because fault point exists, block switch F2, for after throwing on faulty line, detected stream information, locking is standby throws, and standby the throwing on faulty line of block switch F2 causes that circuit breaker CB1 protects action, circuit power-off simultaneously;
Step 6: after block switch F3 o-volt protection, detect that a side voltage recovers and disappears in 3S, meet mutation voltage barring condition, the standby function of throwing of locking;
Step 7: after circuit breaker CB1 protection action, time delay reclosing again;
Step 8: block switch F2 detects that a side has pressure, a side with no pressure, though meet standby throwing condition, because fault point exists, the standby function of throwing of block switch F2, by overcurrent locking, in the state of opening a sluice gate, is no longer carried out the standby instruction of throwing;
Step 9: the opposite side of fault point, powered by power supply 2, block switch F4 detects that a side has pressure, a side is with no pressure, meets standby throwing condition, carries out standby throwing;
Step 10: block switch F4 is standby throw after, block switch F3 meets a side has pressure, a side with no pressure, meets standby throwing condition, but throws function by voltage jump locking because block switch F3 is standby, in the state of opening a sluice gate, no longer carries out the standby instruction of throwing;
Step 11: block switch F2, F3 are in gate-dividing state, and fault point is successfully isolated, block switch F1, F4, F5 are in "on" position, and non-fault zone restores electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297188.0A CN104037762A (en) | 2014-06-28 | 2014-06-28 | Distribution line section switch control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297188.0A CN104037762A (en) | 2014-06-28 | 2014-06-28 | Distribution line section switch control method |
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| CN104037762A true CN104037762A (en) | 2014-09-10 |
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| CN201410297188.0A Pending CN104037762A (en) | 2014-06-28 | 2014-06-28 | Distribution line section switch control method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300539A (en) * | 2014-10-31 | 2015-01-21 | 国家电网公司 | Distribution line fault self-healing controller and distribution line fault self-healing control method |
| CN104377828A (en) * | 2014-11-24 | 2015-02-25 | 国网辽宁省电力有限公司锦州供电公司 | Uniform adjusting method for protective function of breaker |
| CN104466926A (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | Feeder automation system parameter setting method suitable for distributed power source connection |
| CN106329465A (en) * | 2016-08-31 | 2017-01-11 | 河南华盛隆源电气有限公司 | Zero-sequence protection method and device taking zero-sequence voltage as criterion |
| CN106532683A (en) * | 2016-10-14 | 2017-03-22 | 国网上海市电力公司 | Self-healing method of 110kV transformer station hand-in-hand power supply |
| CN107453317A (en) * | 2017-09-21 | 2017-12-08 | 国网山东省电力公司 | A kind of three times reclosing method of distribution line |
| CN117595258A (en) * | 2023-12-12 | 2024-02-23 | 西安兴汇电力科技有限公司 | Method for improving automatic closing transfer safety of tie switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623971A (en) * | 2012-03-26 | 2012-08-01 | 绍兴电力局 | Method for controlling on-pole sectional switch with fault isolation function |
-
2014
- 2014-06-28 CN CN201410297188.0A patent/CN104037762A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623971A (en) * | 2012-03-26 | 2012-08-01 | 绍兴电力局 | Method for controlling on-pole sectional switch with fault isolation function |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300539A (en) * | 2014-10-31 | 2015-01-21 | 国家电网公司 | Distribution line fault self-healing controller and distribution line fault self-healing control method |
| CN104377828A (en) * | 2014-11-24 | 2015-02-25 | 国网辽宁省电力有限公司锦州供电公司 | Uniform adjusting method for protective function of breaker |
| CN104466926A (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | Feeder automation system parameter setting method suitable for distributed power source connection |
| CN106329465A (en) * | 2016-08-31 | 2017-01-11 | 河南华盛隆源电气有限公司 | Zero-sequence protection method and device taking zero-sequence voltage as criterion |
| CN106329465B (en) * | 2016-08-31 | 2018-09-18 | 河南华盛隆源电气有限公司 | It is a kind of using residual voltage as the zero-sequenceprotection method and apparatus of criterion |
| CN106532683A (en) * | 2016-10-14 | 2017-03-22 | 国网上海市电力公司 | Self-healing method of 110kV transformer station hand-in-hand power supply |
| CN107453317A (en) * | 2017-09-21 | 2017-12-08 | 国网山东省电力公司 | A kind of three times reclosing method of distribution line |
| CN117595258A (en) * | 2023-12-12 | 2024-02-23 | 西安兴汇电力科技有限公司 | Method for improving automatic closing transfer safety of tie switch |
| CN117595258B (en) * | 2023-12-12 | 2024-07-05 | 西安兴汇电力科技有限公司 | Method for improving automatic closing transfer safety of tie switch |
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Application publication date: 20140910 |