CN103178511A - Intelligent fault line selection and fault management system for power distribution network - Google Patents

Intelligent fault line selection and fault management system for power distribution network Download PDF

Info

Publication number
CN103178511A
CN103178511A CN2013101328748A CN201310132874A CN103178511A CN 103178511 A CN103178511 A CN 103178511A CN 2013101328748 A CN2013101328748 A CN 2013101328748A CN 201310132874 A CN201310132874 A CN 201310132874A CN 103178511 A CN103178511 A CN 103178511A
Authority
CN
China
Prior art keywords
fault
arc
distribution network
power distribution
line selection
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.)
Pending
Application number
CN2013101328748A
Other languages
Chinese (zh)
Inventor
管必萍
王强
戴军瑛
俞玲
陈玉辉
范炎炜
杨锐
姜铁卫
夏磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
Original Assignee
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Shanghai Municipal Electric Power Co filed Critical State Grid Corp of China SGCC
Priority to CN2013101328748A priority Critical patent/CN103178511A/en
Publication of CN103178511A publication Critical patent/CN103178511A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses an intelligent fault line selection and fault management system for a power distribution network. The system comprises a master station, a communication front-end processor, an arc extinction line selection controller, arc extinction matching equipment, a grounding transformer and multiple fault indicators, wherein the fault indicators are distributed on all wire outlet circuits; the arc extinction matching equipment is connected to the bus through the grounding transformer; the arc extinction line selection controller is respectively connected with the arc extinction matching equipment and various wire outlet circuits; the communication front-end processor is respectively in wireless communication connection with each fault indicator and is in communication connection with the arc extinction line selection controller; and the master station is in communication connection with the communication front-end processor. The requirements of the construction scale and capacity development of the distribution network can be met, when a single phase earth fault occurs, the ground arc can be rapidly extinguished, the problem that the fault line cannot be accurately identified is solved, the safe and reliable operation of the distribution network is guaranteed, and the power supply service quality is improved.

Description

A kind of smart grounding route selection and Fault Management System for power distribution network
Technical field
The present invention relates to a kind of smart grounding route selection and Fault Management System for power distribution network.
Background technology
The electric pressure of China's distribution network system is generally in the 6-66kV scope, and its neutral grounding mode mainly is divided into small current neutral grounding system (comprise isolated neutral and through the grounding through arc mode) and heavy current grounding system (being mainly through the low resistance grounding mode).The small current neutral grounding system great advantage is when single phase ground fault occurs, do not destroy the symmetry of system line voltage, according to relevant operating standard, this moment, power distribution network still can move 2 hours, did not affect the continuous power supply to the user, but because the voltage to earth of healthy phases has raise 3 times, may cause that the weak link of insulation is breakdown, develop into phase fault, accident is further enlarged, and then affect user's normal power supply; And, when occuring, arc light ground connection also can cause the total system overvoltage, so damage equipment, threaten personal safety, destroy the security of system operation.Therefore, when in small current neutral grounding system, single phase ground fault occuring, must locate exactly faulty line and abort situation, and in time fix a breakdown, guarantee the normal operation of distribution network system.
For the single-phase grounding selecting problem of small current system, done a large amount of theoretical researches and field practice both at home and abroad, utilize different fault signatures, based on different route selection principles, proposed various solutions, from the whole country, practical effect is unsatisfactory.Simultaneously; sharply increase along with power load; the system capacitive current of power distribution network often can exceed the rules requirement; collateral security power supply reliability, fail safe and raising performance driving economy equal angles are set out; adopt more and more widely the mode of neutral by arc extinction coil grounding in power distribution network, yet, due to the compensating action of arc suppression coil to the faulty line earthing capacitance current; make the feature of single phase ground fault more not obvious, this has also brought a new difficult problem to small current line selection.
Due to the distribution line long transmission distance, branch line is many simultaneously, and the natural environment and climate complicated condition is changeable, and the natural calamities such as extraneous breakage, equipment fault and thunder and lightning usually cause failure rate higher.At first the power failure in case break down makes troubles to people's life, has disturbed the normal production and operation of enterprise; Secondly cause greater loss to electric company; Moreover a circuit distance is longer, and branch is many again, is network structure, and looking up the fault is very difficult, has wasted a large amount of manpowers, material resources.
Summary of the invention
Purpose of the present invention provides a kind of smart grounding route selection and Fault Management System for power distribution network exactly in order to address the above problem.
The object of the present invention is achieved like this:
A kind of smart grounding route selection and Fault Management System for power distribution network of the present invention, described power distribution network comprises bus and some outlet circuits of drawing from bus, described smart grounding route selection and Fault Management System comprise main website, prepositive communication computer, extinguishing arc selector control device, arc-extinction complete equipment, grounding transformer and some fault detectors, wherein
Described fault detector distributing installation is on each outlet circuit;
Described arc-extinction complete equipment is connected on described bus by grounding transformer;
Described extinguishing arc selector control device comprises Arc Suppression Coil Control device and the small current system earthing line selecting device that is attached thereto, described Arc Suppression Coil Control device is connected with described arc-extinction complete equipment, described small current system earthing line selecting device respectively with each outlet connection;
Described prepositive communication computer is connected with each described fault detector wireless telecommunications respectively, and is connected with described small current system earthing line selecting device communication;
Described main website is connected with described prepositive communication computer communication.
Above-mentioned a kind of smart grounding route selection and Fault Management System for power distribution network, wherein, described prepositive communication computer is set up wireless telecommunications with each described fault detector by 3G network respectively and is connected.
The multiple functions such as organic combination extinguishing arc of the present invention control, small current earthing wire-selecting, fault location systematically solve the relevant issues of ground connection.
The present invention can satisfy the demand of distribution network construction scale and capacity development, when single phase ground fault occurs, can not only extinguish fast ground arc, but also solve the accurately difficult problem of identification of faulty line, guarantee the safe and reliable operation of power distribution network, promote power supply quality.
The present invention can determine the position of fault quickly and accurately, improves operational efficiency, alleviates working strength, guarantees to stop supplying less more.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
See also Fig. 1, power distribution network comprises bus 1 and some outlet circuits of drawing from bus 1 (1#, 2#...N#, N 〉=2 and be positive integer);
Smart grounding route selection and Fault Management System that the present invention is used for power distribution network comprise main website 4, prepositive communication computer 3, extinguishing arc selector control device 7, arc-extinction complete equipment 6, grounding transformer 5 and some fault detectors 201, wherein,
Fault detector 201 distributing installations are on each outlet circuit (1#, 2#...N#);
Arc-extinction complete equipment 6 is connected on bus 1 by grounding transformer 5;
Extinguishing arc selector control device 7 comprises Arc Suppression Coil Control device 71 and the small current system earthing line selecting device 72 that is attached thereto, Arc Suppression Coil Control device 71 is connected with arc-extinction complete equipment 6, small current system earthing line selecting device 72 connects with each outlet circuit (1#, 2#...N#) respectively;
Prepositive communication computer 3 is set up wireless telecommunications with each fault detector 201 by 3G network respectively and is connected, and is connected with small current system earthing line selecting device 72 communications;
Main website 4 is connected with prepositive communication computer 3 communications.
In the present embodiment, Arc Suppression Coil Control device 71 is the automatic Following-up Compensation Arc-decreasing Wires control device, and the model of selecting is NSE311; The model that small current system earthing line selecting device 72 is selected is NSE321.
When power distribution network generation single phase ground fault, transfer the files by the arc suppression coil in 71 pairs of arc-extinction complete equipments 6 of Arc Suppression Coil Control device, can make the zero-sequence current of faulty line produce obvious jump-value of current, and the variation of the zero-sequence current of non-fault line is very little, thus, can carry out single-phase earth fault line selection based on the mode of arc suppression coil dynamic compensation variable quantity by adopting.
When not breaking down, fault detector 201 is under resting state, residual voltage, electric current to the outlet circuit are sampled, when occuring, fault activates fault detector 201, fault message is sent to prepositive communication computer 3 by 3G network, fault detector 201 reenters resting state, and main website 3 receives after the fault message of prepositive communication computer 3 outputs fast calculation analysis and orients fault generation segment, the location of realizing thus fault.
Above embodiment is only for explanation the present invention's, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.

Claims (2)

1. smart grounding route selection and Fault Management System that is used for power distribution network, described power distribution network comprises bus and some outlet circuits of drawing from bus, it is characterized in that, described smart grounding route selection and Fault Management System comprise main website, prepositive communication computer, extinguishing arc selector control device, arc-extinction complete equipment, grounding transformer and some fault detectors, wherein
Described fault detector distributing installation is on each outlet circuit;
Described arc-extinction complete equipment is connected on described bus by grounding transformer;
Described extinguishing arc selector control device comprises Arc Suppression Coil Control device and the small current system earthing line selecting device that is attached thereto, described Arc Suppression Coil Control device is connected with described arc-extinction complete equipment, described small current system earthing line selecting device respectively with each outlet connection;
Described prepositive communication computer is connected with each described fault detector wireless telecommunications respectively, and is connected with described small current system earthing line selecting device communication;
Described main website is connected with described prepositive communication computer communication.
2. a kind of smart grounding route selection and Fault Management System for power distribution network as claimed in claim 1, is characterized in that, described prepositive communication computer is set up wireless telecommunications with each described fault detector by 3G network respectively and is connected.
CN2013101328748A 2013-04-17 2013-04-17 Intelligent fault line selection and fault management system for power distribution network Pending CN103178511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013101328748A CN103178511A (en) 2013-04-17 2013-04-17 Intelligent fault line selection and fault management system for power distribution network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101328748A CN103178511A (en) 2013-04-17 2013-04-17 Intelligent fault line selection and fault management system for power distribution network

Publications (1)

Publication Number Publication Date
CN103178511A true CN103178511A (en) 2013-06-26

Family

ID=48638196

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013101328748A Pending CN103178511A (en) 2013-04-17 2013-04-17 Intelligent fault line selection and fault management system for power distribution network

Country Status (1)

Country Link
CN (1) CN103178511A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106655128A (en) * 2016-12-27 2017-05-10 国网浙江省电力公司 Partial power off control system of distribution network and distribution network system
CN106711974A (en) * 2016-12-27 2017-05-24 国网浙江省电力公司 Local power failure control system for power distribution network, and power distribution network system
CN108732451A (en) * 2018-04-25 2018-11-02 深圳供电局有限公司 Blanking method is selected in 10KV arc suppression coil earthing system line-to-grounds
CN110672979A (en) * 2019-10-21 2020-01-10 广州航海学院 Power distribution network line fault diagnosis system and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201527461U (en) * 2009-10-22 2010-07-14 上海思南电力通信有限公司 Single-phase earth fault locating system
WO2011012015A1 (en) * 2009-07-29 2011-02-03 江苏省电力公司常州供电公司 Fault line selection method for small current grounding system of distribution network
CN201813213U (en) * 2010-09-03 2011-04-27 河北旭辉电气股份有限公司 General one-order-multiple arc suppression coil and ground wire selecting integrated system
CN102043113A (en) * 2009-10-22 2011-05-04 上海思南电力通信有限公司 Method for locating single phase ground fault locating system
CN203218878U (en) * 2013-04-17 2013-09-25 国家电网公司 Intelligent grounding line selection and fault management system for power distribution network

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011012015A1 (en) * 2009-07-29 2011-02-03 江苏省电力公司常州供电公司 Fault line selection method for small current grounding system of distribution network
CN201527461U (en) * 2009-10-22 2010-07-14 上海思南电力通信有限公司 Single-phase earth fault locating system
CN102043113A (en) * 2009-10-22 2011-05-04 上海思南电力通信有限公司 Method for locating single phase ground fault locating system
CN201813213U (en) * 2010-09-03 2011-04-27 河北旭辉电气股份有限公司 General one-order-multiple arc suppression coil and ground wire selecting integrated system
CN203218878U (en) * 2013-04-17 2013-09-25 国家电网公司 Intelligent grounding line selection and fault management system for power distribution network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
崔维新等: "GPRS技术在小电流接地选线系统中的应用", 《现代电力》, vol. 22, no. 3, 30 June 2005 (2005-06-30) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106655128A (en) * 2016-12-27 2017-05-10 国网浙江省电力公司 Partial power off control system of distribution network and distribution network system
CN106711974A (en) * 2016-12-27 2017-05-24 国网浙江省电力公司 Local power failure control system for power distribution network, and power distribution network system
CN106655128B (en) * 2016-12-27 2019-10-08 国网浙江省电力公司 A kind of power distribution network part power-off control system and distribution network system
CN108732451A (en) * 2018-04-25 2018-11-02 深圳供电局有限公司 Blanking method is selected in 10KV arc suppression coil earthing system line-to-grounds
CN110672979A (en) * 2019-10-21 2020-01-10 广州航海学院 Power distribution network line fault diagnosis system and method

Similar Documents

Publication Publication Date Title
CN203422438U (en) Real-time monitoring and fault location system for overhead lines of power distribution network
CN103178511A (en) Intelligent fault line selection and fault management system for power distribution network
CN102937687B (en) Method for distinguishing disconnection fault and grounding fault during grounding of neutral point through small resistor
CN202309066U (en) Intelligent fast arc-extinction harmonic-extinction line selection and overvoltage protection device
CN104242461A (en) Intelligent sectionalizer
CN103344869A (en) Wire-breakage alarming device and method suitable for 6-35kV power distribution network
CN101964516B (en) Three-phase four-wire system zero-line failure and open-phase intelligent protector
CN105208106A (en) Network security system of intelligent power distribution network system
CN205693355U (en) A kind of medium voltage power distribution cabinet main electrical scheme system
CN203218878U (en) Intelligent grounding line selection and fault management system for power distribution network
CN203275567U (en) Single phase ground fault indicating and positioning device for neutral point arc-extinguishing coil grounding system
CN102937690A (en) Lightning stroke failure disconnection positioning method based on information interaction
CN205921371U (en) Disconnected zero lacks looks protection device and power system fault positioner
CN204789871U (en) Fault monitoring device based on distributing type record ripples
CN205157709U (en) Single -phase ground connection route selection system of dispatch end undercurrent
CN204649899U (en) Small current grounding failure wire selection system in a kind of dispatching of power netwoks
CN201797374U (en) Intelligent protection device for neutral line fault and open phase
CN202041612U (en) Automatic locating device for earth faults of electricity transmission lines
CN201910386U (en) Temporary connecting device for live replacement of fuse tube of drop-out fuse
CN203644644U (en) Intelligent outdoor AC (alternating-current) high-voltage vacuum boundary circuit breaker
CN203217026U (en) Single-phase ground fault wire selection system of small current grounding system
CN202535046U (en) Microcomputer monitoring and protection device for mine-used high-voltage switch
CN103280784A (en) Neutral line breakage protection method and neutral line breakage protector
CN204258428U (en) A kind of mobile wheelbarrow switch type power supply vehicle of meet an emergency switch cubicle
CN204517386U (en) Distribution line middle rank protection integration unit

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130626