CN103646818A - 220kV substation SF6 circuit breaker fault field processing method - Google Patents
220kV substation SF6 circuit breaker fault field processing method Download PDFInfo
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- CN103646818A CN103646818A CN201310667100.5A CN201310667100A CN103646818A CN 103646818 A CN103646818 A CN 103646818A CN 201310667100 A CN201310667100 A CN 201310667100A CN 103646818 A CN103646818 A CN 103646818A
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- circuit breaker
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- 238000003672 processing method Methods 0.000 title abstract 4
- 238000000034 method Methods 0.000 claims description 19
- 238000011065 in-situ storage Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 238000013024 troubleshooting Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract description 7
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 21
- 230000009471 action Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The invention provides a 220kV substation SF6 circuit breaker fault field processing method, belonging to the field of electric technology. The technical scheme of the invention is that on the basis of grasping the basic structure principle, the main components, and the actuator operation principle and operation requirement of an SF6 circuit breaker, starting from the condition of inspection before operation and exit operation, for fault phenomena that hydraulic actuator oil pressure does not meet the requirements, SF6 gas pressure is reduced, the connection and disconnection of the circuit breaker are failed, oil pump pressure is abnormal, and the circuit breaker is in open-phase operation, field processing norms are formulated respectively, and the strictly prohibited items in fault processing are specified. The 220kV substation SF6 circuit breaker fault field processing method has the advantages that through the implementation of the processing method, when the substation SF6 circuit breaker is failed, normal operation and rapid and processing are achieved, a failed part is eliminated from the system, the scope of power failure is reduced, the expansion of an accident is prevented, no damage and safe operation of electrical equipment in the system are ensured, and the processing is reasonable, concise and easy to implement.
Description
Technical field
A kind of 220kV SF of transformer station
6circuit breaker failure in-situ processing process belongs to technical field of electricity.
Background technology
220kV transforming plant primary equipment is in operation and often various faults, wherein SF can occurs
6circuit breaker failure is exactly a class that is difficult to discriminatory analysis and processing.SF
6circuit breaker has that fracture voltage is high, connecting-disconnecting function is strong, allow to cut-off continuously often, the feature such as noise is low and no-spark is dangerous, and circuit breaker size is little, lightweight, capacity is large.This is that traditional oil circuit breaker cannot be compared with compressed-air circuit breaker, has almost all replaced at present oil circuit breaker and compressed-air circuit breaker.But at understanding SF
6in the time of the advantage of circuit breaker own, it affects the factor of transforming plant primary equipment safe operation also to answer conscious understanding, especially some recessiveness, unpredictable factor, as SF
6gas permeation causes pressure decreased etc.Therefore, in the urgent need to standard SF
6circuit breaker failure in-situ processing process.
Summary of the invention
Object of the present invention is formulated a kind of 220kV SF of transformer station exactly
6circuit breaker failure in-situ processing process.
Technical scheme of the present invention is: grasping SF
6on the basis of the basic structure principle of circuit breaker, critical piece and operating mechanism operation logic and service requirement, from pre-commissioning check, situation out of service, start with, just occur that hydraulic actuating mechanism oil pressure is against regulation, SF
6the phenomena of the failure such as gas pressure reduces, circuit breaker is refused divide-shut brake, oil pump is suppressed extremely, circuit breaker open-phase operation, formulate respectively in-situ processing technological specification, and the item of strictly forbidding in regulation troubleshooting.
The invention has the beneficial effects as follows: by the execution of this process, the SF of transformer station
6when circuit breaker breaks down, can standard operation, process rapidly, faulty component is excised from system, reduce power failure range, Accident prevention expands, in protection system electric equipment be not damaged, safe operation, technique is reasonable, brief and concise, be easy to carry out.
Embodiment
The LW10B-252-SF of 220kV transformer station of Yi Wo company
6circuit breaker is embodiments of the invention, describes circuit breaker failure in-situ processing process in detail.Grasping SF
6on the basis of the basic structure principle of circuit breaker, critical piece and operating mechanism operation logic and service requirement, from pre-commissioning check, situation out of service, start with, just occur that hydraulic actuating mechanism oil pressure is against regulation, SF
6the phenomena of the failure such as gas pressure reduces, circuit breaker is refused divide-shut brake, oil pump is suppressed extremely, circuit breaker open-phase operation, formulate respectively in-situ processing technological specification, and the item of strictly forbidding in regulation troubleshooting.Its concrete technology standard is as follows:
For guaranteeing my LW10B-252-SF of 220kV transformer station of company
6circuit breaker failure in-situ processing technique is effective rapidly, specially formulates this technological specification.This technological specification is described by following Three Estate, and operating personnel should understand the meaning and the importance of these alarming signs completely:
attention:the information that should note while representing operation, and circuit breaker is carried out to provisional maintenance.
careful:represent a kind of potential dangerous situation, should get rid of and circuit breaker is carried out to light maintenance.
warning:represent a kind of clar and present danger situation, should get rid of immediately and circuit breaker be carried out large repairs.
1
notepre-commissioning check
Before 1.1 circuit breakers put into operation, should check earth connection whether complete removal or earthed switch whether pull open, whether anti-misoperation locking device normal.
The power supply that should check control loop and subsidiary loop before 1.2 operations, inspection body is energy storage.
1.3 SF
6within the limits prescribed, various signals are correct for gas pressure, and instrument reading is normal.1.4 long-term stoppage in transits surpass the circuit breaker of six months, before formal executable operations, should try operation 2～3 times by distant place control mode, and the mode that can draft by operation order without abnormal rear operates.
Before 1.5 operations, should check the position of corresponding isolating switch, should confirm that relaying protection drops in accordance with regulations.
2
noteoperating circuit breaker has the one of following situations, should to scheduling, report and apply for circuit breaker out of service immediately:
2.1 hydraulic operating system oil pressure are down to operation locking value;
2.2 sleeve pipes have serious damage and electric discharge phenomena;
2.3 SF
6block signal is sent in the serious gas leakage of air chamber;
2.4 pigtail splices are serious rubescent or blow.
The in-situ processing of 3 hydraulic actuating mechanism oil pressure when against regulation
3.1
carefullywhether the force value of site inspection operating mechanism and hydraulic system be normal immediately.
3.2
carefullycheck whether oil pump mains switch trips or fuse, the oil pump mains switch that closes after replacing fuse, starts oil pump and suppresses, and makes pressure rise to service pressure.As tripping operation or fusing again, illustrate that there is short trouble in loop, should find out that short circuit reason processes.
3.3
carefullypressure is really down to " reclosing block value " and can not be suppressed while making pressure recover normal, should to scheduling, report and apply for that exiting reclosing device places under repair immediately.
3.4
warningpressure is really down to " total locking value " and can not be suppressed while making pressure recover normal, should pull open immediately the 220V DC control supply of this circuit breaker, maybe control selector switch is switched to " on the spot " and makes it to become dead circuit breaker, and to scheduling, report application immediately and place under repair after this circuit breaker is out of service.
3.5
warningpressure Drop is to zero time, and No starting oil pump is suppressed, and should report immediately scheduling application and have a power failure and process, and take the necessary measures and place under repair.
4 SF
6in-situ processing when gas pressure reduces
4.1
carefullyas circuit breaker SF
6gas pressure reduces while reporting to the police, immediately site inspection SF
6gas pressure value, strengthens monitoring and reporting without delay scheduling.
4.2
warningwork as SF
6gas permeation is serious, and pressure drop is very fast and when approaching or being down to locking value, should report application to scheduling and have a power failure and process; SF
6gas pressure during lower than locking value, must not carry out the operation of this circuit breaker.
4.3
warningwork as SF
6when gas pressure is down to the alarm of divide-shut brake locking value, site inspection SF immediately
6gas pressure value, as pressure is really down to locking value, should immediately the fast switch-dividing of this breaker control power supply be pulled open, " far away/near " diverter switch in A phase operating mechanism case is switched to " on the spot " position, make this circuit breaker become dead circuit breaker, and report scheduling application power failure and process.
In-situ processing during 5 circuit breaker refusal divide-shut brake
5.1
notecircuit breaker refusal divide-shut brake should check that whether operation is correctly proper; Whether operating power closes; Pressure whether normally, whether send out block signal; Whether breaker mechanism itself has fault; Whether supervisory control system is normal.
5.2
warningrefusal closes a floodgate and processes: circuit breaker closes in faulty line, protection action tripping operation, forbids again closing circuit breaker, reports immediately scheduling and waits for further instructions; If belong to the fault of breaker mechanism own or secondary circuit failure, should report immediately scheduling, and carry out in-situ processing.
5.3
warningrefusal separating brake is processed: operating overstep tripping is the not tripping of faulty line switch, should in no-voltage situation, with isolating switch, stoppage circuit breaker be exited; Because mechanism or secondary circuit failure etc. refuses timesharing, should report immediately scheduling, with bus, by after stoppage circuit breaker series connection, then with bus, draw the power supply of stoppage circuit breaker, stoppage circuit breaker is out of service, and the circuit breaker that tripping occurs should maintain the original state so that analyze and search problem.
5.4
noteafter circuit-breaker switching on-off action, should on-the-spotly confirm body and mechanism's switch-on/off indicator and connecting lever, drive link position, guarantee really divide-shut brake of circuit breaker, check that breaker body has or not extremely simultaneously.
5.5
notein operation, should monitor the variation of circuit breaker traffic lights position indication in the indication of the table such as relevant voltage, electric current, power meter and supervisory control system simultaneously.
6 oil pumps are suppressed abnormal in-situ processing
6.1
notewhen hydraulic fluid pressure, be down to 30.5MPa and continue 3min, oil pump is sent out while suppressing fault-signal, answers site inspection operation of oil pump situation to have or not extremely, and whether hydraulic fluid pressure is normal; Check whether Oil pump electrical machinery has jam or burn out; Check whether oil pump mains switch trips, after tripping operation, examination unification time is confirmed whether to recover normal.
6.2
warningif cannot recover normal, should report immediately and dispatch and carry out in-situ processing.
6.3
carefullywhen oil pump occurs that frequent bulge is suppressed interval at every turn and be less than 1h, reply mechanism carries out visual examination and strengthens monitoring.
6.4
carefullywhen oil pump, suppress over safe action value stopping time not still, should pull open oil pump mains switch and close again, if oil pump starts again, pull open oil pump mains switch, strengthen pressure monitoring and report scheduling.
In-situ processing during 7 circuit breaker open-phase operation
7.1
warningcircuit breaker does not allow open-phase operation, once open-phase operation appears in circuit breaker, should process immediately, avoids fault spread.
7.2
warningthe circuit breaker generation open-phase operation of phase-splitting operation, the tripping operation phase if single-phase tripping operation should be closed immediately, as pull open immediately all the other phases while not closing; If two-phase tripping operation, should pull open the phase that do not trip immediately; The isolated fault circuit breaker of should taking measures as early as possible as cannot be pulled open time.
7.3
carefullyin normal closing operation, circuit breaker two-phase closes, one do not close mutually, and should pull open immediately closes overlaps once mutually again, if unsuccessful should immediately the two-phase of closing being pulled open still, and pull open the fast switch-dividing of control power supply of circuit breaker, report scheduling; In normal sub-switching operation, circuit breaker two-phase disconnects, and one does not pull open mutually, the fast switch-dividing of control power supply of cut-off breaker immediately, and the site inspection position of the switch, confirms to refuse phase-splitting circuit breaker without moving the pulling open of abnormal defensive position.
7.4
warningthe device that opens circuit in service " jump " or personnel touch and circuit transient fault by mistake, if the tripping of reclosing action breaker causes two-phase operation, to disconnect mutually, as without other abnormal conditions, this circuit breaker that should close immediately, in case fault spread.
8
warningthe item of strictly forbidding in troubleshooting
8.1 as breaker mechanism or SF
6when gas pressure sends block signal, forbid to carry out circuit breaker minute, closing operation.
8.2 when Hydraulic Mechanism of Circuit-breaker sends zero-pressure block signal, forbids manually to suppress operation.
If during 8.3 need operation control handle, can not overexert, with anti-tamper control switch.
8.4 use control handle operating breaker, can not return too soon during combined floodgate, in case the time is short, circuit breaker has little time to close a floodgate.
The invention has the beneficial effects as follows: by the execution of this process, the SF of transformer station
6when circuit breaker breaks down, can standard operation, process rapidly, faulty component is excised from system, reduce power failure range, Accident prevention expands, in protection system electric equipment be not damaged, safe operation, technique is reasonable, brief and concise, be easy to carry out.
Claims (1)
- The 1.Yi Zhong 220kV SF of transformer station 6circuit breaker failure in-situ processing process, is characterized in that:Grasping SF 6on the basis of the basic structure principle of circuit breaker, critical piece and operating mechanism operation logic and service requirement, from pre-commissioning check, situation out of service, start with, just occur that hydraulic actuating mechanism oil pressure is against regulation, SF 6the phenomena of the failure such as gas pressure reduces, circuit breaker is refused divide-shut brake, oil pump is suppressed extremely, circuit breaker open-phase operation, formulate respectively in-situ processing technological specification, and the item of strictly forbidding in regulation troubleshooting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667100.5A CN103646818A (en) | 2013-12-11 | 2013-12-11 | 220kV substation SF6 circuit breaker fault field processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667100.5A CN103646818A (en) | 2013-12-11 | 2013-12-11 | 220kV substation SF6 circuit breaker fault field processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103646818A true CN103646818A (en) | 2014-03-19 |
Family
ID=50252017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310667100.5A Pending CN103646818A (en) | 2013-12-11 | 2013-12-11 | 220kV substation SF6 circuit breaker fault field processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103646818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431821A (en) * | 2020-11-11 | 2021-03-02 | 中国南方电网有限责任公司超高压输电公司昆明局 | Early warning device for hydraulic disc spring mechanism of high-voltage circuit breaker |
-
2013
- 2013-12-11 CN CN201310667100.5A patent/CN103646818A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431821A (en) * | 2020-11-11 | 2021-03-02 | 中国南方电网有限责任公司超高压输电公司昆明局 | Early warning device for hydraulic disc spring mechanism of high-voltage circuit breaker |
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Application publication date: 20140319 |