CN108037406A - A kind of line fault lookup method - Google Patents
A kind of line fault lookup method Download PDFInfo
- Publication number
- CN108037406A CN108037406A CN201711477011.9A CN201711477011A CN108037406A CN 108037406 A CN108037406 A CN 108037406A CN 201711477011 A CN201711477011 A CN 201711477011A CN 108037406 A CN108037406 A CN 108037406A
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- CN
- China
- Prior art keywords
- time
- voltage
- lookup method
- line fault
- fault
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of line fault lookup method; by analyzing major network SCADA warning information; according to the closing time TB of substation exit breaker S0 and turn-off time TD; protection seting action delay time TZ intrinsic substation exit breaker S0; combined circuit voltage-time type on-load switch obtains electric time-delay closing time Tn; can accurate judgement line fault section; trouble shoot method provided by the invention reduces fault inspection, positioning, isolation time; ensure repair personnel's personal safety; amount when having a power failure is reduced, improves power supply reliability.
Description
Technical field
The present invention relates to a kind of line fault lookup method.
Background technology
In currently searching line fault, due to GPRS wireless public network jitters, there are some areas wireless network not
The problem of covering or signal strength are weak, especially in bad weather, wireless public network signal is more unreliable, causes failure locking
Information, switch divide-shut brake information can not correctly on give, cause that during each failure of fault inspection personnel the full line voltage time need to be maked an inspection tour
Type/voltage and current type on-load switch determines locking fault section, to ensureing tour personnel's personal safety and providing power supply reliability
Cause influence.
When singlephase earth fault occurs for the system of 10kV small current neutral groundings because part line selection apparatus can not throw tripping or throwing
It can not start reclosing after entering tripping, cause voltage-time type/automatic Switching of voltage and current type can not be carried out to faulty line
Isolation.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of line fault lookup method.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of line fault lookup method, according to electricity
Pressure the automatic Switching Sn of time type obtain electric time-delay closing time Tn and substation exit breaker S0 closing time TB to break
ETAD expected time of arrival and departure TD, failure judgement section is between the automatic Switching Sn-1 and Sn of certain two voltage-time type or certain voltage time
The automatic Switching Sn back segments of type.
TD-TB-TZ=0, between fault coverage S0-S1；
TD-TB-TZ=T1, fault coverage is between S1-S2；
TD-TB-TZ=T1+T2, fault coverage is between S2-S3；
TD-TB-TZ=T1+T2+T3, fault coverage is between S3-S4；
……
Note：Ignore mechanical action and the intrinsic action delay of electronic device.
Wherein：
TZ is the intrinsic protection seting action delays of substation exit breaker S0；
T1 is the action delay of first voltage-time type switch；
T2 is the action delay of second voltage-time type switch；
T3 is the action delay of second voltage-time type switch；
……。
Preferably, the switch is the automatic Switching that band obtains electric delay automatic switching-in function, such as：Voltage-time type/electricity
The automation breaker of piezoelectricity flow pattern automatic load switching or working voltage time type/voltage and current type function, possesses the X times
（Obtain the electric time-delay closing time）, the Y times（Fault confirming time）Function and blocking function.
Preferably, failure is short trouble or earth fault.
Preferably, fault warning device is installed on substation or automatic Switching.
Preferably, the substation exit breaker S0 closures are manual closing or automatic reclosing.
Preferably, the automatic reclosing is first time reclosing.
Preferably, the automatic reclosing is same single shot reclosing.
Preferably, the automatic reclosing is different single shot reclosings.
Preferably, message is sent according to fault coverage to send at the same time to operations staff or user or both.
Preferably, fault coverage is shown in main website or terminal visualization.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention provides a kind of line fault lookup method, by analyzing major network SCADA warning information, according to substation exit
The closing time TB and turn-off time TD of breaker S0, the substation exit breaker S0 intrinsic protection seting action delay time
TZ, combined circuit voltage-time type on-load switch obtain electric time-delay closing time Tn, can accurate judgement line fault section, reduce therefore
Barrier is maked an inspection tour, positioned, isolation time, ensures repair personnel's personal safety, reduces amount when having a power failure, and improves power supply reliability.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of line fault lookup method of the present invention.
Embodiment
With reference to embodiment, the present invention is further illustrated.Wherein, attached drawing only for illustration,
What is represented is only schematic diagram, rather than pictorial diagram, it is impossible to is interpreted as the limitation to this patent；In order to which the reality of the present invention is better described
Example is applied, some components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art
For, some known features and its explanation may be omitted and will be understood by attached drawing.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；In retouching for the present invention
In stating, it is to be understood that if it is based on attached drawing to have the orientation of the instructions such as term " on ", " under ", "left", "right" or position relationship
Shown orientation or position relationship, are for only for ease of and describe the present invention and simplify description, rather than indicate or imply meaning
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore position relationship described in attached drawing
Term is only for illustration, it is impossible to the limitation to this patent is interpreted as, for the ordinary skill in the art, can
To understand the concrete meaning of above-mentioned term as the case may be.
Embodiment
Fig. 1 is a kind of first embodiment of line fault lookup method of the present invention, is tripped after SO failures, is started for the first time certainly
Dynamic reclosing TB, TZ after closing a floodgate to trouble point（0.5 second）Trip TD again.TZ is substation exit breaker（S0）Intrinsic guarantor
Shield adjusts action delay；
S1 obtain it is electric after by T1（28 seconds）Close a floodgate, trip immediately after dead electricity；
S2 obtain it is electric after by T2（7 seconds）Close a floodgate, trip immediately after dead electricity；
S3 obtain it is electric after by T3（7 seconds）Close a floodgate, trip immediately after dead electricity；
The first situation:TD-TB-TZ=0 second, SO is no after closing to pass through delay i.e. tripping, not prolonging by line switching
When, between fault coverage S0-S1；
The second situation:TD-TB-TZ=28 second, SO just tripped after closing by delay in 28 seconds, the delay switched by S1, therefore
Hinder scope between S1-S2；
The second situation:TD-TB-TZ=35 second, by the just tripping of delays in 35 seconds after SO closures, prolong by the switch of S1, S2
When 28+7=35 second, fault coverage is between S2-S3；
The third situation:TD-TB-TZ=42 second, by the just tripping of delays in 42 seconds after SO closures, by the switch of S1, S2, S3
Be delayed 28+7+7=42 second, and fault coverage is in S3 back segments.
Closing by hand S0 replaces first time automatic reclosing S0, can obtain same effect.
The automatic Switching that electric delay automatic switching-in function is obtained for band is switched, such as：Voltage-time type/voltage and current type is automatic
Change on-load switch or the automation breaker of working voltage time type/voltage and current type function, possess the X times（Electric delay is obtained to close
The lock time）, the Y times（Fault confirming time）Function and blocking function.
Wherein, failure is short trouble or earth fault.
Wherein, fault warning device is installed on substation or automatic Switching.
In addition, substation exit breaker S0 closures are manual closing or automatic reclosing.
In addition, automatic reclosing is first time reclosing.
In addition, automatic reclosing is same single shot reclosing.
In addition, automatic reclosing is different single shot reclosings.
Sent at the same time to operations staff or user or both in addition, sending message according to fault coverage.
In addition, fault coverage is shown in main website or terminal visualization.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of line fault lookup method, it is characterised in that electric time-delay closing is obtained according to the automatic Switching Sn of voltage-time type
Time Tn and substation exit breaker S0 closing time TB to turn-off time TD, failure judgement section is in certain two voltage
Between the automatic Switching Sn-1 and Sn of time type or the automatic Switching Sn back segments of certain voltage-time type；
TD-TB-TZ=0, between fault coverage S0-S1；
TD-TB-TZ=T1, fault coverage is between S1-S2；
TD-TB-TZ=T1+T2, fault coverage is between S2-S3；
TD-TB-TZ=T1+T2+T3, fault coverage is between S3-S4；
……
Note：Ignore mechanical action and the intrinsic action delay of electronic device；
Wherein：
TZ is substation exit breaker（S0）Intrinsic protection seting action delay；
T1 is the action delay of first voltage-time type switch；
T2 is the action delay of second voltage-time type switch；
T3 is the action delay of second voltage-time type switch；
……。
A kind of 2. line fault lookup method according to claim 1, it is characterised in that：The switch is that band obtains electric delay
The automatic Switching of automatic switching-in function, such as：Voltage-time type/voltage and current type automatic load switching or working voltage time
The automation breaker of type/voltage and current type function, possesses the X times（Obtain the electric time-delay closing time）, the Y times（During fault recognition
Between）Function and blocking function.
A kind of 3. line fault lookup method according to claim 1, it is characterised in that：Failure is short trouble or ground connection
Failure.
A kind of 4. line fault lookup method according to claim 1, it is characterised in that：Fault warning device is installed on change
Power station or automatic Switching.
A kind of 5. line fault lookup method according to claim 1, it is characterised in that：The substation exit breaker
S0 closures are manual closing or automatic reclosing.
A kind of 6. line fault lookup method according to claim 5, it is characterised in that：The automatic reclosing is first
Secondary reclosing.
A kind of 7. line fault lookup method according to claim 5, it is characterised in that：The automatic reclosing is same
Secondary reclosing.
A kind of 8. line fault lookup method according to claim 5, it is characterised in that：The automatic reclosing is difference
Single shot reclosing.
A kind of 9. line fault lookup method according to claim 1, it is characterised in that：Message is sent according to fault coverage
Sent at the same time to operations staff or user or both.
A kind of 10. line fault lookup method according to claim 1, it is characterised in that：Fault coverage in main website or
Terminal carries out visualization and shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477011.9A CN108037406A (en) | 2017-12-29 | 2017-12-29 | A kind of line fault lookup method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477011.9A CN108037406A (en) | 2017-12-29 | 2017-12-29 | A kind of line fault lookup method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108037406A true CN108037406A (en) | 2018-05-15 |
Family
ID=62098251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711477011.9A Pending CN108037406A (en) | 2017-12-29 | 2017-12-29 | A kind of line fault lookup method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108037406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484681A (en) * | 2021-07-14 | 2021-10-08 | 广西电网有限责任公司电力科学研究院 | On-site overlapping type feeder automation line ground fault interval detection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534001A (en) * | 2008-03-11 | 2009-09-16 | 杨万钟 | Method for detecting distribution network short circuit fault and restoring power supply in non-broken-down section |
| CN102916409A (en) * | 2012-11-13 | 2013-02-06 | 山东电力集团公司济南供电公司 | Voltage-time type feeder automation running method based on parameter adjustment |
| CN103887777A (en) * | 2014-03-31 | 2014-06-25 | 国网上海市电力公司 | Automatic feeder protecting method for overhead line four-section three-contact structure |
| CN106300285A (en) * | 2016-08-04 | 2017-01-04 | 国家电网公司 | It is independent of the self adaptation type feeder automation fault handling method on the spot of network topology |
-
2017
- 2017-12-29 CN CN201711477011.9A patent/CN108037406A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534001A (en) * | 2008-03-11 | 2009-09-16 | 杨万钟 | Method for detecting distribution network short circuit fault and restoring power supply in non-broken-down section |
| CN102916409A (en) * | 2012-11-13 | 2013-02-06 | 山东电力集团公司济南供电公司 | Voltage-time type feeder automation running method based on parameter adjustment |
| CN103887777A (en) * | 2014-03-31 | 2014-06-25 | 国网上海市电力公司 | Automatic feeder protecting method for overhead line four-section three-contact structure |
| CN106300285A (en) * | 2016-08-04 | 2017-01-04 | 国家电网公司 | It is independent of the self adaptation type feeder automation fault handling method on the spot of network topology |
Non-Patent Citations (1)
| Title |
|---|
| 刘勇: "智能配电网故障处理模式研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484681A (en) * | 2021-07-14 | 2021-10-08 | 广西电网有限责任公司电力科学研究院 | On-site overlapping type feeder automation line ground fault interval detection method and device |
| CN113484681B (en) * | 2021-07-14 | 2022-09-23 | 广西电网有限责任公司电力科学研究院 | On-site overlapping type feeder automation line ground fault interval detection method and device |
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Application publication date: 20180515 |
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