CN105226619A - The outer fault distinguishing method of distributed feeder automation district inner region - Google Patents
The outer fault distinguishing method of distributed feeder automation district inner region Download PDFInfo
- Publication number
- CN105226619A CN105226619A CN201510710064.5A CN201510710064A CN105226619A CN 105226619 A CN105226619 A CN 105226619A CN 201510710064 A CN201510710064 A CN 201510710064A CN 105226619 A CN105226619 A CN 105226619A
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- China
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- region
- dtu
- fault
- inner region
- fault distinguishing
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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
- 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
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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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention is the outer fault distinguishing method of distributed feed line automatization system district inner region, it is characterized in that whether being existed as Judging fault by detection of excessive current/low-voltage, the current phasor monitored in conjunction with each region loop line unit and whether be zero, failure judgement occurs in region or outside region.Beneficial effect of the present invention: accurately can distinguish fault occurrence positions in distribution looped network.
Description
Technical field
What the present invention relates to is the outer fault distinguishing method of a kind of distributed feeder automation district inner region, belongs to power distribution automation field.
Background technology
Present electrical power distribution automatization system, more weak for the breakdown judge in electric power looped network, can not accurate failure judgement occurrence positions.
Summary of the invention
What the present invention proposed is the method for discrimination of external area error in a kind of distributed feeder automation district, and the breakdown judge that its object is intended to solve in existing electric power looped network is more weak, can not the defect of accurate failure judgement occurrence positions.
Technical solution of the present invention: the outer fault distinguishing method of distributed feed line automatization system district inner region, it is characterized in that whether being existed as Judging fault by detection of excessive current/low-voltage, the current phasor monitored in conjunction with each region loop line unit and whether be zero, failure judgement occurs in region or outside region.
Beneficial effect of the present invention: accurately can distinguish fault occurrence positions in distribution looped network.
Accompanying drawing explanation
Accompanying drawing 1 is power distribution station 1 short circuit occurred inside fault schematic diagram.
Fig. 2 is the fault schematic diagram that is short-circuited between power distribution station 1 and power distribution station 2.
Embodiment
The outer fault distinguishing method of distributed feed line automatization system district inner region, whether existed as Judging fault by detection of excessive current/low-voltage, the current phasor monitored in conjunction with each region loop line unit and whether be zero, failure judgement occurs in region or outside region.
Described failure judgement occurs in district: DTU/ stands institute's terminal region within the jurisdiction fault distinguishing: DTU/ stands in each loop line unit that institute's terminal connects, overcurrent or low pressure detected, electric current flow into flow out unequal.
Described failure judgement occurs in i.e. area fault differentiation between DTU/ station institute terminal outside district: at least one DTU/ station institute terminal detects overcurrent or low pressure, and each DTU detects that the electric current inflow of self loop line is equal with outflow.
Technical scheme of the present invention is further described below in conjunction with accompanying drawing:
As shown in Figure 1, during power distribution station short circuit occurred inside, 3 loop line unit of the DTU device of responsible monitoring on-load switch 1, on-load switch 2, on-load switch 9, monitor overcurrent, but the overcurrent vector because of these three loop lines is not 0, so be judged as the troubles inside the sample space in region 1.
As shown in Figure 2, when being short-circuited between power distribution station 1 and power distribution station 2, the DTU2 being responsible for each on-load switch in the DTU1 of each on-load switch in guarded region 1 and responsible guarded region 2 has monitored overcurrent and low voltage failure, but the current phasor that each loop line of DTU1 self monitors and be 0, and the current phasor that monitors of each loop line of DTU2 self and be 0, so be judged as external area error, namely fault occurs between region 1 and region 2.
Claims (3)
1. the outer fault distinguishing method of distributed feed line automatization system district inner region, it is characterized in that whether being existed as Judging fault by detection of excessive current/low-voltage, the current phasor monitored in conjunction with each region loop line unit and whether be zero, failure judgement occurs in region or outside region.
2. the outer fault distinguishing algorithm of distributed feed line automatization system district according to claim 1 inner region, it is characterized in that, described failure judgement occurs in district: DTU/ stands institute's terminal region within the jurisdiction fault distinguishing: DTU/ stands in each loop line unit that institute's terminal connects, overcurrent or low pressure detected, electric current flows into outflow unequal.
3. the outer fault distinguishing algorithm of distributed feed line automatization system district according to claim 1 inner region, it is characterized in that, described failure judgement occurs in i.e. area fault differentiation between DTU/ station institute terminal outside district: at least one DTU/ station institute terminal detects overcurrent or low pressure, and each DTU detects that the electric current inflow of self loop line is equal with outflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510710064.5A CN105226619B (en) | 2015-10-28 | 2015-10-28 | The outer fault distinguishing method of distributed feeder automation area inner region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510710064.5A CN105226619B (en) | 2015-10-28 | 2015-10-28 | The outer fault distinguishing method of distributed feeder automation area inner region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105226619A true CN105226619A (en) | 2016-01-06 |
| CN105226619B CN105226619B (en) | 2018-09-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510710064.5A Active CN105226619B (en) | 2015-10-28 | 2015-10-28 | The outer fault distinguishing method of distributed feeder automation area inner region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105226619B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958452A (en) * | 2016-06-30 | 2016-09-21 | 深圳市科陆电子科技股份有限公司 | Power grid distributed network protection method and protection device and system |
| CN114024601A (en) * | 2021-11-18 | 2022-02-08 | 许继电气股份有限公司 | Power distribution network line fault area indicating system and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256539A (en) * | 1999-11-25 | 2000-06-14 | 李元龙 | Microcomputer bus protection using the integration of multiple element current variables as main parameter of criterion |
| CN1581625A (en) * | 2004-04-13 | 2005-02-16 | 贺家李 | Transmission line micro processor adaptive split-phase longitudinal difference protection method |
| CN103001199A (en) * | 2012-12-12 | 2013-03-27 | 绍兴电力局 | Ethernet-based current differential protection device and implementation method thereof |
| KR101266953B1 (en) * | 2011-02-23 | 2013-05-30 | 한전케이디엔주식회사 | Power supply system and method using distributed power system |
| CN103390887A (en) * | 2013-08-07 | 2013-11-13 | 孙鸣 | Method for isolating faults of power distribution system with micro-grid |
-
2015
- 2015-10-28 CN CN201510710064.5A patent/CN105226619B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256539A (en) * | 1999-11-25 | 2000-06-14 | 李元龙 | Microcomputer bus protection using the integration of multiple element current variables as main parameter of criterion |
| CN1581625A (en) * | 2004-04-13 | 2005-02-16 | 贺家李 | Transmission line micro processor adaptive split-phase longitudinal difference protection method |
| KR101266953B1 (en) * | 2011-02-23 | 2013-05-30 | 한전케이디엔주식회사 | Power supply system and method using distributed power system |
| CN103001199A (en) * | 2012-12-12 | 2013-03-27 | 绍兴电力局 | Ethernet-based current differential protection device and implementation method thereof |
| CN103390887A (en) * | 2013-08-07 | 2013-11-13 | 孙鸣 | Method for isolating faults of power distribution system with micro-grid |
Non-Patent Citations (1)
| Title |
|---|
| 韦肖燕等: "基于双亲节点矩阵拓扑识别的配电网故障判断新算法", 《中国电力教育》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958452A (en) * | 2016-06-30 | 2016-09-21 | 深圳市科陆电子科技股份有限公司 | Power grid distributed network protection method and protection device and system |
| CN114024601A (en) * | 2021-11-18 | 2022-02-08 | 许继电气股份有限公司 | Power distribution network line fault area indicating system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105226619B (en) | 2018-09-25 |
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