CN108011361B - The method of AT short trouble section is judged based on AT power supply mode feeder current matrix method - Google Patents

The method of AT short trouble section is judged based on AT power supply mode feeder current matrix method Download PDF

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Publication number
CN108011361B
CN108011361B CN201711314151.4A CN201711314151A CN108011361B CN 108011361 B CN108011361 B CN 108011361B CN 201711314151 A CN201711314151 A CN 201711314151A CN 108011361 B CN108011361 B CN 108011361B
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China
Prior art keywords
matrix
feeder
section
power supply
fault
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CN201711314151.4A
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CN108011361A (en
Inventor
董志杰
陈兴强
崔校玉
杨振龙
邢晓乾
李波
姚晓云
董晨阳
刘聪
王芳
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China Railway Design Corp
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China Railway Design Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H02H1/0069—Details of emergency protective circuit arrangements concerning transmission of signals by means of light or heat rays
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The present invention provides a kind of method that AT short trouble section is judged based on AT power supply mode feeder current matrix method, electric substation (SS) feeder current when this method utilizes the failure of AT power supply mode, AT institute (AT) feeder current, subregion institute (ATS) feeder current forms feeder current matrix and feeder switch action state forms switch motion matrix, fault data matrix, which is formed, by the two matrix products quickly judges which section (AT1 short trouble occurs at, AT2, AT3, AT4), cut off fault section, diminution accident range, realize that AT power supply mode tractive power supply system is intelligent.Effect of the invention is that this method quickly to judge short trouble section by feeder current matrix and switch motion matrix relationship, the order that the switching value of switch motion matrix is acted as trigger switch, fault section can be quickly isolated, influence of the short trouble to AT power supply system is reduced, tractive power supply system intelligent level is improved.

Description

The method of AT short trouble section is judged based on AT power supply mode feeder current matrix method
Technical field
The present invention relates to a kind of methods that AT short trouble section is judged based on AT power supply mode feeder current matrix method.
Background technique
Most of the tractive power supply system of traditional design scheme that the current high-speed railway in China uses uses AT power supply mode Existing main problem is: each institute's pavilion is only communicated and data exchange between scheduling institute along the line, is lacked between each institute's pavilion Real time communication and information exchange；So that each switch control can only be carried out by scheduling, it is difficult to realize Real-Time Switch between institute's pavilion Linkage lock can not achieve powered operation mode and be automatically switched according to operating condition.When a failure occurs it, lock operation power failure is cut Time is longer, and the data volume that relay protection relies only on traction institute is judged, can not using adjacent AT institute and AT subregion institute feeder line, The accuracy of the data of institute's pavilion, quick-action and selectivity and fault location needs to be further improved.In order to give full play to benefit It should be sent out to systematic intelligent direction with information-based, networking and resource-sharing bring technical advantage, tractive power supply system Exhibition, accurate judgement fault section become the flexible switching infrastructure safeguard work of the method for operation.
Summary of the invention
The technical problem to be solved by the present invention is to provide one kind to judge AT short circuit based on AT power supply mode feeder current matrix method The method of fault section passes through traction institute, AT institute, AT subregion institute's feeder current data matrix and switch motion square using this method Battle array product formed fault data matrix, realize fault section accurate judgement, subject to definitely except fault section propose technical guarantee, contracting Under short short circuit accident state, tractive power supply system restores electricity the time, according to adapting to different power supply sections, and then improves and leads Draw power supply system to vehicle transportability, improve shipping mass.
To achieve the above object, the present invention, which provides, a kind of judge that AT short circuit is former based on AT power supply mode feeder current matrix method Hinder the method for section, in which: electric substation (SS) feeder current when this method utilizes the failure of AT power supply mode, AT institute (AT) feeder line Electric current, subregion institute (ATS) feeder current forms feeder current matrix and feeder switch action state forms switch motion matrix, leads to Cross the two matrix products formed fault data matrix quickly judge short trouble occur which section (AT1, AT2, AT3, AT4), fault section is cut off, accident range is reduced, realizes that AT power supply mode tractive power supply system is intelligent；This method includes Following judgment step:
When step 1. short circuit current failure, electric substation, AT institute, subregion institute feeder current numerical value are formed into matrix, in matrix Data are successively written as according to AT section typeThe scale of matrix is more according to feeder current branch It is few to determine；
Feeder switch action state is formed feeder switch movement matrix by step 2.
Two matrixes of steps 1 and 2 are carried out product by step 3., form fault data matrix.
Step 4. judges that fault data matrix result, which section judgement is out of order generation at.
The switch motion state of respective segments is sent to switch and switched over, quickly cut off fault section by step 5..
The beneficial effects of the invention are as follows judged using this method so that traction substation SS and AT institute ATS, AT subregion institute Feeder line data are shared between ATSP, form matrix by feeder current data and switch motion matrix relationship forms data Ffault matrix quickly identifies fault section, shortens fault section to railway transportation influence time；Improve tractive power supply system To Transportation Organization adaptability.Fault current is subjected to section partition, utmostly reducing influences existing supply network, reduces It was found that dispatcher cuts off the handling time of fault section according to contact net network structure after failure, realize that height is intelligent； Simultaneous Switching movement matrix can form switch motion sequence command, split to put capable operation into.
Detailed description of the invention
Fig. 1 is that feeder current matrix of the invention judges AT short trouble section method schematic diagram；
Fig. 2 is feeder current data transmission and processing schematic diagram of the present invention.
Specific embodiment
Judge that the method for AT short trouble section is subject to based on AT power supply mode feeder current to of the invention in conjunction with attached drawing Explanation.
The method that AT short trouble section is judged based on AT power supply mode feeder current matrix method of the invention, this method benefit With electric substation (SS) feeder current when failure of AT power supply mode, AT institute (AT) feeder current, subregion institute (ATS) feeder current shape Switch motion matrix is formed at feeder current matrix and feeder switch action state, forms number of faults by the two matrix products Quickly judge that short trouble occurs to cut off fault section at which section (AT1, AT2, AT3, AT4) according to matrix, reduces accident Range realizes that AT power supply mode tractive power supply system is intelligent；This method includes following judgment step:
When step 1. short circuit current failure, electric substation, AT institute, subregion institute feeder current numerical value are formed into matrix, in matrix Data are successively written as according to AT section typeThe scale of matrix is according to the number of feeder current branch It determines.
Feeder switch action state is formed feeder switch movement matrix by step 2.
Two matrixes of steps 1 and 2 are carried out product by step 3., form fault data matrix.
Step 4. judges that fault data matrix result, which section judgement is out of order generation at.
The switch motion state of respective segments is sent to switch and switched over, quickly cut off fault section by step 5..
The feeder switch acts matrix, and switch motion state " 1 " or " 0 " form switch motion matrix, the square at feeder line Battle array according to fault section number voluntarily extend.
The fault data matrix forms fault signature data by feeder current matrix and switch motion matrix product, By fault signature data judge to occur between contact net (T) and rail (R) short trouble or contact net and positive feeder (F) it Between break down, and occur fault section.
Of the invention judges that the methodological function of AT short trouble section is realized in based on AT power supply mode feeder current : this method includes traction substation SS feeder line, AT institute ATS, subregion institute ATSP feeder current matrix, traction substation SS, Feeder switch acts matrix between AT institute ATS, AT subregion institute ATSP.Judge that AT is short using AT power supply mode feeder current matrix method Fault section method its specific practice in road is: by relationship between judgement traction institute feeder current and fault data, judging failure AT section occurs.Determine which section final fault section occurs in.
Power supply mode feeder current matrix method of the invention judges that the method for AT short trouble section realizes process: such as Fig. 1 Shown, feeder current matrix method judges AT short trouble section method schematic diagram.Wherein traction substation SS feeder line line contact T and positive feeder F is netted, uplink feeder line is contact net T1 and positive feeder F1, and downlink feeder line is contact net T2 and positive feeder F2, AT institute AT Feeder line；IT1AT、IF1ATFor uplink feeder line obtained by AT, IT2AT、IF2ATFor downlink feeder line obtained by AT；IT1ATS、IF1ATSFor ATS institute Obtain uplink feeder line, IT2ATS、IF2ATSFor downlink feeder line obtained by AT.Using traction institute and AT institute, AT subregion institute by traction substation Power supply section is divided into tetra- sections of AT1, AT2, AT3, AT4.
Identify that the fault section practice is as follows:
When short trouble tripping occurs for contact net, following matrix is formed
After matrix calculates, that calculated result of numerical value is close with short circuit current numerical value in matrix, then It is seen to be which direction feeder fault, such asIT1+IT1AT+IT1ATsFor failed shorted electric current IT+IF, then T1 line occurs for short dot AT1 and AT2 section.Matrix operation is carried out again.
If IT1+IT1ATFailed shorted electric current (IT+IF) greater than 0.5 times, then fault section occurs in AT1, then switch is dynamic Making matrix 11 can be sent to inductive switch IT1, IT1AT, corresponding switch is opened, so that fault section is quickly cut off.
As shown in Fig. 2, traction substation SS and AT institute ATS and AT in feeder current data transmission and processing schematic diagram of the present invention Data exchange is transmitted using optical fiber between subregion institute ATSP, AT institute ATS and AT subregion institute ATSP feeder line real-time data transmission To traction institute SS by drawing carried out data processing, instruction is issued according to data processed result and is transferred to AT institute, AT subregion institute, it will After fault section excision, it can restore electricity at once.

Claims (3)

1. a kind of method for judging AT short trouble section based on AT power supply mode feeder current matrix method, it is characterized in that: the party Electric substation (SS) feeder current when method utilizes the failure of AT power supply mode, AT institute (AT) feeder current, subregion institute (ATS) feeder line electricity Stream forms feeder current matrix, and forms switch motion matrix using feeder switch action state, passes through the two Matrix Multiplications Product forms fault data matrix and quickly judges that short trouble occurs to cut off failure at which section (AT1, AT2, AT3, AT4) Section reduces accident range, realizes that AT power supply mode tractive power supply system is intelligent；This method includes following judgment step:
When step 1. short circuit current failure, electric substation, AT institute, subregion institute feeder current numerical value are formed into matrix, data in matrix It is successively written as according to AT section typeThe scale of matrix according to feeder current branch number certainly It is fixed；
Feeder switch action state is formed feeder switch movement matrix by step 2.
Two matrixes of steps 1 and 2 are carried out product by step 3., form fault data matrix；
Step 4. judges that fault data matrix result, which section judgement is out of order generation at；
The switch motion state of respective segments is sent to switch and switched over, quickly cut off fault section by step 5..
2. as claim 1 judges the method for AT short trouble section, feature based on AT power supply mode feeder current matrix method Be: the feeder switch acts matrix, and switch motion state " 1 " or " 0 " form switch motion matrix at feeder line, the matrix according to The number of fault section voluntarily extends.
3. as claim 1 judges the method for AT short trouble section, feature based on AT power supply mode feeder current matrix method Be: the fault data matrix is formed fault signature data, is passed through by feeder current matrix and switch motion matrix product Fault signature data judge to occur to send out between short trouble or contact net and positive feeder (F) between contact net (T) and rail (R) Raw failure, and the fault section occurred.
CN201711314151.4A 2017-12-12 2017-12-12 The method of AT short trouble section is judged based on AT power supply mode feeder current matrix method Active CN108011361B (en)

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CN111913123B (en) * 2020-06-29 2023-03-28 中铁第一勘察设计院集团有限公司 Method and device for identifying backflow state of traction power supply system
CN113325272B (en) * 2021-08-03 2021-10-29 中国铁路设计集团有限公司 Hub region fault section discrimination method based on power flow analysis
CN116599059B (en) * 2023-07-17 2023-09-19 中国铁路设计集团有限公司 Multi-source traction power supply system fault section discrimination and power supply optimization method and device

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CN103715670B (en) * 2013-12-30 2016-05-18 西南交通大学 A kind of high-speed railway supply arm connection based on impedance characteristic is jumped guard method
CN103715671B (en) * 2013-12-30 2016-04-06 西南交通大学 Guard method jumped by a kind of connection of the high-speed railway supply arm based on current characteristic
JP2015198480A (en) * 2014-03-31 2015-11-09 株式会社東芝 Feeder protection relay
CN105790235B (en) * 2016-03-28 2018-06-15 南京国电南自轨道交通工程有限公司 A kind of novel high ferro traction power supply feeder line selectivity trip system
CN107425510B (en) * 2017-09-15 2019-05-17 中铁第四勘察设计院集团有限公司 A kind of high-speed railway power supply network system and its guard method

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