CN104319889A - Automatic throwing and exiting method for achieving protection along with operation of neutral point isolating switch - Google Patents
Automatic throwing and exiting method for achieving protection along with operation of neutral point isolating switch Download PDFInfo
- Publication number
- CN104319889A CN104319889A CN201410590371.XA CN201410590371A CN104319889A CN 104319889 A CN104319889 A CN 104319889A CN 201410590371 A CN201410590371 A CN 201410590371A CN 104319889 A CN104319889 A CN 104319889A
- Authority
- CN
- China
- Prior art keywords
- contact
- transformer
- protection
- neutral point
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000004224 protection Effects 0.000 title claims abstract description 54
- 230000007935 neutral effect Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000002955 isolation Methods 0.000 claims description 26
- 230000005284 excitation Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04S10/16—Electric power substations
-
- 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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Abstract
The invention provides an automatic throwing and exiting method for achieving protection along with the operation of a neutral point isolating switch. The neutral point isolating switch is switched on or off, an auxiliary contact of an intermediate relay can be switched off or on, and thus a main change telecontrol device and a main change protective device are controlled to be thrown into a power grid or to exit out of the power grid. The automatic throwing and exiting method is safe, reliable, simple and feasible, the integrated substation automation level is improved, and the stable operation of an electrical power system is guaranteed.
Description
technical field:
The invention belongs to comprehensive automation of electric power system unit check field, be specifically related to a kind ofly operate the protection automatic switching method caused with neutral point isolation switch.
background technology:
Neutral point isolation switch is the important component part of substation transformer; China 11OkV system is owing to being subject to system stability, relaying protection and reducing the requirement of the aspects such as single-phase short circuit current; take fraction neutral point of main transformer to be ground connection operation, the neutral point of most of main transformer is the mode of earth-free operation.
In China, several transformers of 110kV and above transformer station all uprise and are paired runnings in becoming, and adopt a transformer neutral point ground connection, the mode of other isolated neutral is run, when a Repair of Transformer is out of service so wherein, and will frequent operation neutral point isolation switch, namely mode of falling operates, after Repair of Transformer terminates, recover normal operating mode again, and other various modes change the neutral point isolation switch frequent operation caused.At this moment, along with the pulling open of operation neutral point isolation switch, close, relevant protection such as neutral point zero-sequenceprotection and gap protection will drop into simultaneously and exit.Under normal circumstances, close neutral point isolation switch, drop into zero-sequenceprotection, exit gap protection; Pull open neutral point isolation switch, zero-sequenceprotection be exited, drop into gap protection.The throwing of these protections is moved back, and shields enterprising line operate pressing plate and has come, first compilation operation ticket primarily of operation maintenance personnel main transformer protection in transformer station, and the throwing then having two people to operate these protection pressing plates is moved back.These operation, former conventional Attended mode transformer station, be feasible, operate normally.And universal along with the three large changes of collection five and unattended substation, primary equipment is primarily of remote operation, and the throwing of second protection part is moved back still primarily of operation maintenance personnel execute-in-place.Like this, just waste a large amount of manpower and materials, especially the operation center of some transformer stations is distant.Just cause the operating time long, meanwhile, need equally to take long period and more energy to power transmission recovery operation.Therefore, invent a kind of operation with neutral point isolation switch and protect automatic switching method to be necessary.
summary of the invention:
In order to avoid above various shortcoming; the present invention proposes a kind of protection automatic switching method with the operation of neutral point isolation switch of safe and reliable, simple possible; the method is simple to operate; automatic switching situation is protected after accomplishing to overhaul the operation of neutral point isolation switch; can save again and stop the power transmission operating time; save manpower and materials, ensure that the safe and stable operation of electrical network.
To achieve these goals, the technical solution that the present invention adopts is:
A kind of with neutral point isolation switch operation realization protection automatic switching method, comprise the steps:
The first step, when power system operating mode changes, need the gap protection in protection equipment for transformer exit drop into zero-sequenceprotection time, the neutral point isolation switch closed on transformer;
Second step; neutral point isolation switch often open that auxiliary contact are closed makes auxiliary relay excitation; first pair of normal opened contact of auxiliary relay auxiliary contact closes; open in main transformer protection device by zero-sequenceprotection pressing plate; second pair of normal opened contact of auxiliary relay auxiliary contact closes; directly open in main transformer telemechanical apparatus; the input signal distant place completing zero-sequenceprotection is transmitted; simultaneously; second pair of normally closed contact of auxiliary relay auxiliary contact is opened, and opens and returns into the gap protection input signal to main transformer telemechanical apparatus.
3rd step, when power system operating mode changes, need in protection equipment for transformer gap protection drop into and zero-sequenceprotection exit time, pull open on transformer neutral point isolation switch;
4th step; the auxiliary contact of often opening of neutral point isolation switch are opened and are made auxiliary relay loss of excitation; first pair of normally closed contact of auxiliary relay auxiliary contact closes; open in main transformer protection device by gap protection pressing plate; complete the correct input of gap protection; second pair of normally closed contact of auxiliary relay auxiliary contact closes; directly open in main transformer telemechanical apparatus; the input signal distant place completing gap protection is transmitted; simultaneously; second pair of normal opened contact of auxiliary relay auxiliary contact is opened, and opens and returns into the zero-sequenceprotection input signal to main transformer telemechanical apparatus.
The beneficial effect that the present invention produces is:
(1) the long-range throwing carrying out corresponding protection can move back, realize largest optimization after unattended operation;
(2) save a large amount of manpower and materials, increase economic efficiency;
(3) reduce the operating time, improve power supply reliability;
(4) reduce the probability of misoperation, realize operating electricity with the automatic synchronization of primary equipment;
(5) improve integrated automation of transformation stations level, ensure the stable operation of electric power system.
accompanying drawing illustrates:
Fig. 1 is a kind of embodiment schematic diagram of the present invention.
embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing is can simultaneously with the instantiation schematic diagram of the protection automatic switching of neutral point isolation switch operation.
As shown in Figure 1, during the neutral point isolation switch 2 closing on transformer 1, neutral point isolation switch 2 often open that auxiliary contact are closed makes auxiliary relay 3 excitation, first couple of normal opened contact 5-2 of auxiliary relay auxiliary contact 5 closes, opened in main transformer protection device 4 by zero-sequenceprotection pressing plate 7, complete the correct input of zero-sequenceprotection; Second couple of normal opened contact 5-4 of auxiliary relay auxiliary contact 5 closes, and directly opens in main transformer telemechanical apparatus 8, and the input signal distant place completing zero-sequenceprotection is transmitted.Meanwhile, first couple of normally closed contact 5-1 of auxiliary relay auxiliary contact 5 opens, and is opened in main transformer protection device 4, complete correctly returning of gap protection by gap protection pressing plate 6; Second couple of normally closed contact 5-3 of auxiliary relay auxiliary contact 5 opens, and open and return into the gap protection input signal to main transformer telemechanical apparatus 8, the inverse signal distant place completing gap protection is transmitted.
In like manner, when pulling open the neutral point isolation switch 2 of transformer 1, the auxiliary contact of often opening of neutral point isolation switch 2 are opened and are made auxiliary relay 3 loss of excitation, first couple of normally closed contact 5-1 of auxiliary relay auxiliary contact 5 closes, open in main transformer protection device 4 by gap protection pressing plate 7, complete the correct input of gap protection, second couple of normally closed contact 5-3 of auxiliary relay auxiliary contact 5 closes, directly open in main transformer telemechanical apparatus 8, the input signal distant place completing gap protection is transmitted, simultaneously, first couple of normal opened contact 5-2 of auxiliary relay auxiliary contact 5 opens, open in main transformer protection device 4 by zero-sequenceprotection pressing plate 7, complete correctly returning of zero-sequenceprotection, between second couple of normal opened contact 5-4 of relay auxiliary contact 5 open, open and drop into signal into the zero-sequenceprotection to main transformer telemechanical apparatus 8 and return, the inverse signal distant place completing zero-sequenceprotection is transmitted.
Claims (1)
1. realize a protection automatic switching method with the operation of neutral point isolation switch, it is characterized in that, comprise the steps:
The first step, when power system operating mode changes, need the gap protection in protection equipment for transformer exit drop into zero-sequenceprotection time, the neutral point isolation switch closed on transformer;
Second step, neutral point isolation switch often open that auxiliary contact are closed makes auxiliary relay excitation, first pair of normal opened contact of auxiliary relay auxiliary contact closes, open in protection equipment for transformer by zero-sequenceprotection pressing plate, second pair of normal opened contact of auxiliary relay auxiliary contact closes, directly open in transformer telemechanical apparatus, the input signal distant place completing zero-sequenceprotection is transmitted, simultaneously, first pair of normally closed contact of auxiliary relay auxiliary contact is opened, the contact opened in main transformer protection device by gap protection pressing plate is returned, complete correctly returning of gap protection, second pair of normally closed contact of auxiliary relay auxiliary contact is opened, and open and return into the gap protection input signal to transformer telemechanical apparatus, the inverse signal distant place completing gap protection is transmitted,
3rd step, when power system operating mode changes, need in protection equipment for transformer gap protection drop into and zero-sequenceprotection exit time, pull open on transformer neutral point isolation switch;
4th step, the auxiliary contact of often opening of neutral point isolation switch are opened and are made auxiliary relay loss of excitation, first pair of normally closed contact of auxiliary relay auxiliary contact closes, open in protection equipment for transformer by gap protection pressing plate, complete the correct input of gap protection, second pair of normally closed contact of auxiliary relay auxiliary contact closes, directly open in transformer telemechanical apparatus, the input signal distant place completing gap protection is transmitted, simultaneously, first pair of normal opened contact of auxiliary relay auxiliary contact is opened, the contact opened in main transformer protection device by zero-sequenceprotection pressing plate is returned, complete correctly returning of zero-sequenceprotection, second pair of normal opened contact of auxiliary relay auxiliary contact is opened, and open and return into the zero-sequenceprotection input signal to transformer telemechanical apparatus, the inverse signal distant place completing zero-sequenceprotection is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590371.XA CN104319889B (en) | 2014-10-29 | 2014-10-29 | A kind of with neutral point isolation switch operation realization protection automatic switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590371.XA CN104319889B (en) | 2014-10-29 | 2014-10-29 | A kind of with neutral point isolation switch operation realization protection automatic switching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104319889A true CN104319889A (en) | 2015-01-28 |
| CN104319889B CN104319889B (en) | 2016-08-17 |
Family
ID=52375088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410590371.XA Active CN104319889B (en) | 2014-10-29 | 2014-10-29 | A kind of with neutral point isolation switch operation realization protection automatic switching method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104319889B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193583A (en) * | 2018-09-27 | 2019-01-11 | 国网福建省电力有限公司泉州供电公司 | A kind of internal bridge stub protection adaptively throws the safety control moved back |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007267588A (en) * | 2006-03-03 | 2007-10-11 | Ricoh Co Ltd | Power source system |
| CN101436787A (en) * | 2008-12-23 | 2009-05-20 | 江苏省电力公司镇江供电公司 | Method for automatically devoting microcomputer control standby power for enlarging inner bridge wire splice |
| CN202218008U (en) * | 2011-08-12 | 2012-05-09 | 贵州电力试验研究院 | Connecting structure for main transformer station failure starter and re-pressing interlock reliever |
-
2014
- 2014-10-29 CN CN201410590371.XA patent/CN104319889B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007267588A (en) * | 2006-03-03 | 2007-10-11 | Ricoh Co Ltd | Power source system |
| CN101436787A (en) * | 2008-12-23 | 2009-05-20 | 江苏省电力公司镇江供电公司 | Method for automatically devoting microcomputer control standby power for enlarging inner bridge wire splice |
| CN202218008U (en) * | 2011-08-12 | 2012-05-09 | 贵州电力试验研究院 | Connecting structure for main transformer station failure starter and re-pressing interlock reliever |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193583A (en) * | 2018-09-27 | 2019-01-11 | 国网福建省电力有限公司泉州供电公司 | A kind of internal bridge stub protection adaptively throws the safety control moved back |
| CN109193583B (en) * | 2018-09-27 | 2024-03-26 | 国网福建省电力有限公司泉州供电公司 | Control circuit for self-adaptive switching of inner bridge connection short lead protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104319889B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106300655A (en) | Intelligent distribution network open air open circuit supervising device | |
| CN103488159A (en) | Distribution box type smart home terminal and comprehensive protection controller | |
| CN204316189U (en) | Direct current system switch remote operation anti-error system | |
| CN202487453U (en) | Monitoring device for opening and closing of high-voltage isolating switch | |
| CN204190488U (en) | A kind of intelligent substation pressing plate monitoring system | |
| CN102075005A (en) | Processing method for 110KV zone automatic standby power switching action on basis of EMS (Engine Management System) system | |
| CN103364663A (en) | Intelligent device for simulating transformer substation primary equipment behavior | |
| CN104192026B (en) | Based on electrification railway contact net electric isolating switch and the method for supervising of power supply switching type | |
| CN104062580B (en) | A kind of portable beaker three-phase non-three phase tester movement time | |
| CN204669085U (en) | A kind of control type power distribution circuit breakers far away | |
| CN201256289Y (en) | Remote controlling electric switching device for output clamping circuit | |
| CN204067103U (en) | A kind of GIS device disconnecting link position transform hint device | |
| CN203929925U (en) | A kind of protective relaying device divide-shut brake return circuit testing device | |
| CN203813514U (en) | Control loop for high-voltage circuit breaker | |
| CN104319889B (en) | A kind of with neutral point isolation switch operation realization protection automatic switching method | |
| CN202748425U (en) | Residual current protection uninterrupted testing device | |
| CN204669084U (en) | A kind of induction energy fetching formula outdoor intelligent breaker | |
| CN204136803U (en) | Based on the electrification railway contact net electric isolating switch of power supply switching type | |
| CN201549865U (en) | 10-35KV circuit microcomputer protection reclosing device | |
| CN203838310U (en) | Electric isolation knife switch secondary circuit testing device | |
| CN103983914A (en) | Testing device and method for secondary circuit of electric isolating knife switch | |
| CN203930006U (en) | Non-full phase tester actuation time of a kind of portable beaker three-phase | |
| CN204794328U (en) | Three -phase electricity dual supply automatic switching control equipment | |
| CN208460649U (en) | A kind of intensive breaker of detection mutual inductance | |
| CN203398521U (en) | High-voltage ring network switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: SHANGQIU POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER COMPANY Effective date: 20150407 Owner name: SHANGQIU POWER SUPPLY COMPANY OF STATE GRID HENAN Effective date: 20150407 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 476000 SHANGQIU, HENAN PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20150407 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Shangqiu Power Supply Company of State Grid Henan Electric Power Company Applicant after: SHANGQIU TIANYU ELECTRIC POWER ENGINEERING SURVEY & DESIGN CO., LTD. Address before: Suiyang District Shangqiu city Henan Province Cultural Road 476000 Applicant before: Shangqiu Power Supply Company of State Grid Henan Electric Power Company |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |