CN102624097A - Fault point positioning method for intelligent distribution lines - Google Patents
Fault point positioning method for intelligent distribution lines Download PDFInfo
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- CN102624097A CN102624097A CN2012101097039A CN201210109703A CN102624097A CN 102624097 A CN102624097 A CN 102624097A CN 2012101097039 A CN2012101097039 A CN 2012101097039A CN 201210109703 A CN201210109703 A CN 201210109703A CN 102624097 A CN102624097 A CN 102624097A
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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
- Y04S10/16—Electric power substations
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Abstract
The invention discloses a fault point positioning method for intelligent distribution lines. Each of the distribution lines is divided into multiple sections, a distribution pillar of each section of each of the distribution lines is provided with a distribution pillar switch data feeder terminal unit (FTU) for detecting fault electric currents in the section of the distribution lines, and a distribution system is further provided with data remote terminal units (RTUs) for a transformer substation and data terminal units (DTUs) for a switching station and a ring main unit. When a distribution line fault occurs, a fault electric current is detected by RTUs, FTUs and DTUs from a bus to a fault point, RTUs, FTUs and DTUs outside the fault point can't detect the fault electric current, the fault electric current is zero, and fault points can be accurately detected according to the characteristic. The fault point positioning method for the intelligent distribution lines has the advantages of being capable of rapidly and accurately positioning the fault points of the distribution lines and improving functional reliability of the distribution lines and the like.
Description
Technical field
The present invention relates to a kind of fault point positioning method of intelligent power distribution circuit.
Background technology
35kV, 10kV system are isolated neutral system in the electric power system, as 35kV, come quick and precisely to find the fault point in the method that at present not have to get well when the 10kV feeder line breaks down.Feeder line is that feeder line is made up of many distribution lines by the power circuit of Bulk Supply Substation in the distribution system to the secondary substation power supply, and every distribution line is divided into multistage, and the line construction of feeder line is as shown in Figure 3.At present, when searching the fault point of feeder line, be lean on the work about electric power personnel piecemeal line walking search the fault point, this just needs the human and material resources and the time of labor, therefore serious reduction power supply reliability.
Summary of the invention
The present invention is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of fault point positioning method of intelligent power distribution circuit is provided, with the search efficiency that improves feeder fault point and accuracy, raising power supply reliability.
The present invention adopts following technical scheme for the technical solution problem.
The fault point positioning method of intelligent power distribution circuit with being divided into multistage on every distribution line, all is provided with a distribution pillar switch data terminal FTU who is used to detect the fault current of this section distribution line on the distribution pillar of each section distribution line; Distribution system also is provided with substation data terminal RTU, opens and closes ring main unit data terminal DTU in one's power; The step of fault point positioning method is following:
A. gather each substation data terminal RTU, respectively open and close the fault current data of the distribution pillar switch data terminal FTU of ring main unit data terminal DTU, each bar distribution line and every section distribution line thereof in one's power by the substation;
B. the substation is analyzed the fault current data, if the fault current of T bar distribution line judges then that greater than zero T bar distribution line is a faulty line;
C. the fault current of each section distribution line on the T bar distribution line is analyzed in the substation, if the fault current of n section distribution line is greater than zero, the fault current of n+1 section distribution line is zero, judges that then the n section distribution line on the T bar distribution line breaks down;
D. the substation sends to main website with fault message, and the staff is according to the position of the fault message localization of faults of main website acquisition.
Compared with present technology, beneficial effect of the present invention is embodied in:
When distribution line broke down, all RTU, FTU and the DTU of bus to fault point all detected fault current, and the RTU outside the fault point, FTU and DTU all detect less than fault current, and fault current is zero.Can accurately really find the fault point according to these characteristics.When line failure, the data terminal RTU of all feeder lines, FTU or DTU will gather and the data of computing are delivered to substation (as shown in Figure 2) through branch's communication network on the bus, carry out comprehensive analysis and judgement by the substation.The substation is sent to main website with the result of comprehensive analysis and judgement, by the operations staff result of comprehensive analysis and judgement is informed the maintainer, and the maintainer can quick and precisely find the fault point according to the result, can quick and precisely find the fault point.
The fault point positioning method of intelligent power distribution circuit of the present invention has the advantages such as functional reliability that can locate, can improve distribution line to the fault point of distribution line rapidly and accurately.
Description of drawings
Fig. 1 is the flow chart of the fault point positioning method of intelligent power distribution circuit of the present invention.
Fig. 2 is the power distribution automation communication network architecture figure of the fault point positioning method of intelligent power distribution circuit of the present invention.
Fig. 3 is the line assumption diagram of the feeder line of distribution system.
Below pass through embodiment, and combine accompanying drawing that the present invention is described further.
Embodiment
Referring to Fig. 1, the fault point positioning method of intelligent power distribution circuit with being divided into multistage on every distribution line, all is provided with a distribution pillar switch data terminal FTU who is used to detect the fault current of this section distribution line on the distribution pillar of each section distribution line; Distribution system also is provided with substation data terminal RTU, opens and closes ring main unit data terminal DTU in one's power; The step of fault point positioning method is following:
A. gather each substation data terminal RTU, respectively open and close the fault current data of the distribution pillar switch data terminal FTU of ring main unit data terminal DTU, each bar distribution line and every section distribution line thereof in one's power by the substation;
B. the substation is analyzed the fault current data, if the fault current of T bar distribution line judges then that greater than zero (or greater than preset value) T bar distribution line is a faulty line;
C. the fault current of each section distribution line on the T bar distribution line is analyzed in the substation; If the fault current of n section distribution line is greater than zero (or greater than preset value); The fault current of n+1 section distribution line is zero (or being not more than preset value), judges that then the n section distribution line on the T bar distribution line breaks down;
D. the substation sends to main website with fault message, and the staff is according to the position of the fault message localization of faults of main website acquisition.When distribution line broke down, all RTU, FTU and the DTU of bus to fault point all detected fault current, and the RTU outside the fault point, FTU and DTU all detect less than fault current, and fault current is zero.Can accurately really find the fault point according to these characteristics.
When line failure, the data terminal RTU of all feeder lines, FTU or DTU will gather and the data of computing are delivered to substation (as shown in Figure 2) through branch's communication network on the bus, carry out comprehensive analysis and judgement by the substation.The substation is sent to main website with the result of comprehensive analysis and judgement, by the operations staff result of comprehensive analysis and judgement is informed the maintainer, and the maintainer can quick and precisely find the fault point according to the result, can quick and precisely find the fault point.
Like Fig. 3, distribution line is divided into many, and every distribution line is divided into the 1st to n+k section, and on this n+k section distribution line, each section distribution line correspondence is provided with a distribution pillar switch data terminal FTU.Distribution system also is provided with substation data terminal RTU, opens and closes ring main unit data terminal DTU in one's power.
Like Fig. 2, distribution pillar switch data terminal FTU is connected with the substation of distribution system through branch's communication network, sends detected fault current to substation.RTU also is connected with the substation of distribution system through communication network with DTU, sends detected fault current to substation.The substation includes communication line and computer, and special software is installed on the computer, through the fault current data of each FTU of software processes, RTU and DTU transmission.Handle fault current the substation, through the contrast of fault current and preset value, judges whether this bar or this section distribution line break down.
Claims (1)
1. the fault point positioning method of intelligent power distribution circuit is characterized in that, with being divided into multistage on every distribution line, all is provided with a distribution pillar switch data terminal FTU who is used to detect the fault current of this section distribution line on the distribution pillar of each section distribution line; Distribution system also is provided with substation data terminal RTU, opens and closes ring main unit data terminal DTU in one's power; The step of fault point positioning method is following:
A. gather each substation data terminal RTU, respectively open and close the fault current data of the distribution pillar switch data terminal FTU of ring main unit data terminal DTU, each bar distribution line and every section distribution line thereof in one's power by the substation;
B. the substation is analyzed the fault current data, if the fault current of T bar distribution line judges then that greater than zero T bar distribution line is a faulty line;
C. the fault current of each section distribution line on the T bar distribution line is analyzed in the substation, if the fault current of n section distribution line is greater than zero, the fault current of n+1 section distribution line is zero, judges that then the n section distribution line on the T bar distribution line breaks down;
D. the substation sends to main website with fault message, and the staff is according to the position of the fault message localization of faults of main website acquisition.
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| CN2012101097039A CN102624097A (en) | 2012-04-16 | 2012-04-16 | Fault point positioning method for intelligent distribution lines |
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| CN2012101097039A CN102624097A (en) | 2012-04-16 | 2012-04-16 | Fault point positioning method for intelligent distribution lines |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698250A (en) * | 2013-12-06 | 2015-06-10 | 展讯通信（上海）有限公司 | Mobile terminal, current decomposing and positioning method and system thereof and current testing device |
| CN104808113A (en) * | 2015-04-30 | 2015-07-29 | 国网黑龙江省电力有限公司鹤岗供电公司 | Intelligent distribution line fault point location method |
| CN105067959A (en) * | 2015-09-15 | 2015-11-18 | 长沙威胜信息技术有限公司 | Fault positioning method under ring network power supply condition |
| CN105445619A (en) * | 2015-11-25 | 2016-03-30 | 国网辽宁省电力有限公司阜新供电公司 | Power distribution circuit fault point positioning method |
| CN106199329A (en) * | 2015-05-29 | 2016-12-07 | Abb技术有限公司 | The fault location of DC distribution system |
| CN106841933A (en) * | 2017-04-20 | 2017-06-13 | 武汉三相电力科技有限公司 | A kind of transmission line malfunction synthesized positioning method and system |
| CN106997020A (en) * | 2017-03-20 | 2017-08-01 | 中国石油大学(华东) | A kind of cable distributor track network fault positioning method based on forward-order current fault component phase bit comparison |
| CN112462194A (en) * | 2020-11-09 | 2021-03-09 | 国网山东省电力公司东平县供电公司 | Fault finding device and method for distribution line |
| CN114325238A (en) * | 2021-12-30 | 2022-04-12 | 上海尤比酷电气有限公司 | Low-voltage distribution line fault positioning method and system |
| CN114614571A (en) * | 2022-03-31 | 2022-06-10 | 日照宇通坤和电力科技有限公司 | Distribution network feeder automatic system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698250A (en) * | 2013-12-06 | 2015-06-10 | 展讯通信（上海）有限公司 | Mobile terminal, current decomposing and positioning method and system thereof and current testing device |
| CN104808113A (en) * | 2015-04-30 | 2015-07-29 | 国网黑龙江省电力有限公司鹤岗供电公司 | Intelligent distribution line fault point location method |
| CN106199329A (en) * | 2015-05-29 | 2016-12-07 | Abb技术有限公司 | The fault location of DC distribution system |
| CN105067959A (en) * | 2015-09-15 | 2015-11-18 | 长沙威胜信息技术有限公司 | Fault positioning method under ring network power supply condition |
| CN105067959B (en) * | 2015-09-15 | 2017-11-28 | 长沙威胜信息技术有限公司 | Fault Locating Method under the conditions of ring network power supply |
| CN105445619A (en) * | 2015-11-25 | 2016-03-30 | 国网辽宁省电力有限公司阜新供电公司 | Power distribution circuit fault point positioning method |
| CN106997020A (en) * | 2017-03-20 | 2017-08-01 | 中国石油大学(华东) | A kind of cable distributor track network fault positioning method based on forward-order current fault component phase bit comparison |
| CN106997020B (en) * | 2017-03-20 | 2020-01-07 | 中国石油大学(华东) | Cable distribution looped network fault positioning method based on positive sequence current fault component phase comparison |
| CN106841933A (en) * | 2017-04-20 | 2017-06-13 | 武汉三相电力科技有限公司 | A kind of transmission line malfunction synthesized positioning method and system |
| CN112462194A (en) * | 2020-11-09 | 2021-03-09 | 国网山东省电力公司东平县供电公司 | Fault finding device and method for distribution line |
| CN114325238A (en) * | 2021-12-30 | 2022-04-12 | 上海尤比酷电气有限公司 | Low-voltage distribution line fault positioning method and system |
| CN114325238B (en) * | 2021-12-30 | 2023-12-15 | 上海尤比酷电气有限公司 | Low-voltage distribution line fault positioning method and system |
| CN114614571A (en) * | 2022-03-31 | 2022-06-10 | 日照宇通坤和电力科技有限公司 | Distribution network feeder automatic system |
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Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121218 |
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Effective date of registration: 20121218 Address after: 230022 No. 133, Susong Road, Hefei, Anhui Applicant after: Anhui Power Company Hefei Power Supply Company Applicant after: State Grid Corporation of China Address before: 230022 power supply company, No. 133, Susong Road, Anhui, Hefei Applicant before: Anhui Power Company Hefei Power Supply Company |
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Application publication date: 20120801 |