CN108923393A - The method of the station internal fault isolation for institute's overall power distribution terminal of standing - Google Patents

The method of the station internal fault isolation for institute's overall power distribution terminal of standing Download PDF

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Publication number
CN108923393A
CN108923393A CN201810651183.1A CN201810651183A CN108923393A CN 108923393 A CN108923393 A CN 108923393A CN 201810651183 A CN201810651183 A CN 201810651183A CN 108923393 A CN108923393 A CN 108923393A
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CN
China
Prior art keywords
module
switch
current
signal
outlet
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
CN201810651183.1A
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Chinese (zh)
Inventor
张宪青
许万鹏
孙志印
王文博
郜立志
马海霞
郭丹丹
胡燕南
王东翔
曹磊
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.)
Shenzhen Boyuan Electric Power Co Ltd
Original Assignee
Shenzhen Boyuan Electric Power Co Ltd
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 Shenzhen Boyuan Electric Power Co Ltd filed Critical Shenzhen Boyuan Electric Power Co Ltd
Priority to CN201810651183.1A priority Critical patent/CN108923393A/en
Publication of CN108923393A publication Critical patent/CN108923393A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency 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
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261Sectionalised 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
    • H02H7/262Sectionalised 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency 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
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261Sectionalised 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
    • H02H7/263Sectionalised 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks

Abstract

The invention discloses a kind of methods of the station internal fault isolation of substation's overall power distribution terminal, include the following steps:(1)Utilize voltage and current signal in voltage and current acquisition module acquisition station;(2)Establish the incidence relation of the block signal check-in module of contact incoming switch and the block signal control check-out module of contact outlet switch;(3)When faulty generation, control module detects all fault-current signals from power supply point to fault point(4)Locking, which is issued, close to the block signal module of the contact outlet switch of fault point outputs signal;(5)The block signal check-in module of contact incoming switch is latched the outlet of oneself, and protection is failure to actuate;(6)The control outlet module for getting in touch with outlet switch carries out protection act outlet;Failure is isolated.The present invention can be carried out in situ the isolation and power supply of failure, and communication dependency degree is low, and structure is simple.

Description

The method of the station internal fault isolation for institute's overall power distribution terminal of standing
Technical field:
The present invention relates to a kind of methods of station internal fault isolation, more particularly to a kind of station internal fault of institute's overall power distribution terminal of standing The method of isolation, belongs to field of feeder automation.
Background technique:
With the rapid development of market economy, the continuous improvement of living standards of the people, people get over the degree of dependence of electrical energy demands Come bigger, skyscraper especially in city and the user for belonging to I and II supply standard, accounting are gradually expanding, city Function increasingly tends to reach perfection and complicates, and each large and medium-sized urban electric power department uses mostly in 10kV distribution network construction The primary power distribution structure of more power supply ring network power supplies, this distribution structure power supply reliability is higher, and running and comparing is flexible, but cascades Switch it is more, it is differential that protection classification can not pull open the time, so distribution structure is only that feeder line cannot be achieved is automatic by relay protection Change function, suitable electrical power distribution automatization system need to be cooperated, the continuity and reliability of power supply just may be implemented, it is existing at present Electrical power distribution automatization system must all rely on communication and distribution main website or son although the troubleshooting of loop grid can be completed It stands, system is huge, installs and safeguards and is relatively difficult, it is difficult to which duplication and popularization, the requirement to operation maintenance personnel are also relatively high.
Summary of the invention:
The technical problem to be solved by the present invention is to:Overcome the deficiencies of the prior art and provide it is a kind of can make it is nearest from fault point Switch trip, the station internal fault for reducing power supply interrupted district, reducing power off time, the station institute overall power distribution terminal for improving power supply reliability The method of isolation.
The present invention is adopted the technical scheme that in order to solve the technical problem:
A method of the station internal fault for institute's overall power distribution terminal of standing is isolated, and is included the following steps:
(1)Route voltage and current signal is acquired using voltage and current acquisition module, and collected voltage and current signal is transmitted To control module;
(2)The block signal check-in module of contact incoming switch is established by electric connecting relation using control module and is got in touch with out The incidence relation of the block signal control check-out module of wiretap;
(3)When faulty generation, the voltage and current acquisition module of switchgear is able to detect that from power supply point to fault point All fault-current signals, and send this signal to control module;
(4)At this point, the block signal check-out module close to the contact outlet switch of fault point issues to be latched and outputs signal, and by this Block signal sends control module to through check-in module;
(5)The block signal check-out module that the block signal check-in module of contact incoming switch receives contact outlet switch issues Signal is outputed in locking, is latched the control of export of oneself;
(6)The control outlet module for getting in touch with outlet switch carries out protection act outlet, and failure is isolated.
The control module determines switch for contact incoming switch or contact outlet switch by directional element.
Voltage transformer and current transformer, the model of voltage transformer are provided on the voltage and current acquisition module TR1102-2C, the model TR0102-2B of current transformer.
The substation's normal information and fault message that receive are transmitted to backstage by communication module by the control module Terminal.
Positive beneficial effect of the invention is:
1, the present invention combine switching station typical grid structure, by the interval type of switching station be divided into interconnection switch, outlet switch, And bus connection switch, terminal determine contact incoming switch, contact outlet switch by directional element, are electrically saved by block signal Point establishes contact incoming switch, gets in touch with the incidence relation between outlet switch, bus connection switch, according to contact outlet switch locking connection The logic of network incoming switch, incoming switch and outlet switch are not necessarily to Graded coordination, same time definite value are shared, so that ring network power supply The time electrode difference protection of three-stage cascade switching station may be implemented under framework, reduce power failure area.
2, the present invention, which solves the problems, such as in the case of complex network structures that guard time is differential, to separate, interconnection switch, Contact outlet switch can share same time definite value, while the switch trip nearest from fault point, reduce power supply interrupted district, and reduction stops The electric time improves power supply reliability.
3, the present invention can be carried out in situ the isolation and power supply of failure, and communication dependency degree is low, and structure is simple, and reproducibility is strong.
Detailed description of the invention:
Fig. 1 is the connection schematic diagram of station internal fault signal processing and block signal processing of the invention;
Fig. 2 is the connection schematic diagram of embodiment in the present invention.
Specific embodiment:
The present invention will be further explained and explanation for 1, Fig. 2 and specific embodiment with reference to the accompanying drawing:
Embodiment:A method of the station internal fault for institute's overall power distribution terminal of standing is isolated, and is included the following steps:
(1)Using voltage and current signal in voltage and current acquisition module acquisition station, and collected voltage and current signal is transmitted To control module;
(2)The block signal check-in module and connection of contact incoming switch 8DL are established by electric connecting relation using control module The incidence relation of the block signal control check-out module of network outlet switch 7DL;
(3)When faulty generation, switchgear(7DL and 8DL)Voltage and current acquisition module be able to detect that from power supply point Control module is sent to all fault-current signals of fault point, and by this signal;
(4)At this point, letter is outputed in the block signal control check-out module sending locking close to the contact outlet switch 7DL of fault point Number, and signal is outputed into this locking and sends control module to through check-in module;
(5)The block signal check-in module of contact incoming switch 8DL receives the block signal control inspection of contact outlet switch 7DL After signal is outputed in module sending locking out, it is latched the control of export of oneself;
(6)The check-out module for getting in touch with outlet switch 7DL carries out protection act outlet, and failure is isolated.
Control module determines switch for contact incoming switch 8DL or contact outlet switch 7DL by directional element.
Voltage transformer and current transformer, the model of voltage transformer are provided on voltage and current acquisition module TR1102-2C, the model TR0102-2B of current transformer.
The substation's normal information and fault message that receive are transmitted to background terminal by communication module by control module.
When work, the control module in terminal passes through voltage transformer and current transformer collection voltages electric current letter respectively Number, block signal check-in module information is acquired, control block signal controls check-out module signal, when different switchtypes(Connection Network incoming switch and contact outlet switch)It detects current signal, judged by control module and controls contact outlet switch sending Signal is outputed in locking, and contact incoming switch detects that block signal inputs, is latched the control of export of oneself, and then makes to get in touch with outlet Switch outlet movement, and get in touch with incoming switch and do not export movement, terminal realizes that contact outlet switch is protected in station by logical operation Shield locking contact incoming switch, locking contact incoming relay-protection movement make the nearest contact outlet switch movement of distance fault point Fault Isolation is carried out, scope of power outage is reduced.
The above is only preferred embodiments of the invention, and it is intended that the present invention is limited in any way, all It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within In the protection scope of technical solution of the present invention.

Claims (4)

1. a kind of method of the station internal fault isolation of station institute's overall power distribution terminal, includes the following steps:
(1)Route voltage and current signal is acquired using voltage and current acquisition module, and collected voltage and current signal is transmitted To control module;
(2)The block signal check-in module of contact incoming switch is established by electric connecting relation using control module and is got in touch with out The incidence relation of the block signal control check-out module of wiretap;
(3)When faulty generation, the voltage and current acquisition module of switchgear is able to detect that from power supply point to fault point All fault-current signals, and send this signal to control module;
(4)At this point, the block signal check-out module close to the contact outlet switch of fault point issues to be latched and outputs signal, and by this Block signal sends control module to through check-in module;
(5)The block signal check-out module that the block signal check-in module of contact incoming switch receives contact outlet switch issues Signal is outputed in locking, is latched the control of export of oneself;
(6)The control outlet module for getting in touch with outlet switch carries out protection act outlet, and failure is isolated.
2. the method for the station internal fault isolation of station institute's overall power distribution terminal according to claim 1, it is characterized in that:The control Molding block determines switch for contact incoming switch or contact outlet switch by current direction element.
3. the method for the station internal fault isolation of station institute's overall power distribution terminal according to claim 1, it is characterized in that:The electricity Voltage transformer and current transformer, the model TR1102-2C of voltage transformer, electric current are provided on current voltage acquisition module The model TR0102-2B of mutual inductor.
4. the method for the station internal fault isolation of station institute's overall power distribution terminal according to claim 1, it is characterized in that:The control The power distribution station received institute's normal information and fault message are transmitted to background terminal by communication module by molding block.
CN201810651183.1A 2018-06-22 2018-06-22 The method of the station internal fault isolation for institute's overall power distribution terminal of standing Pending CN108923393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810651183.1A CN108923393A (en) 2018-06-22 2018-06-22 The method of the station internal fault isolation for institute's overall power distribution terminal of standing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810651183.1A CN108923393A (en) 2018-06-22 2018-06-22 The method of the station internal fault isolation for institute's overall power distribution terminal of standing

Publications (1)

Publication Number Publication Date
CN108923393A true CN108923393A (en) 2018-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109698554A (en) * 2019-01-03 2019-04-30 国网山东省电力公司平邑县供电公司 Substation equipment Dispatching monitor and control system and method
CN109802490A (en) * 2019-02-21 2019-05-24 国网山东省电力公司临沂供电公司 A kind of intelligent platform of substation's electrification fortune inspection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109698554A (en) * 2019-01-03 2019-04-30 国网山东省电力公司平邑县供电公司 Substation equipment Dispatching monitor and control system and method
CN109802490A (en) * 2019-02-21 2019-05-24 国网山东省电力公司临沂供电公司 A kind of intelligent platform of substation's electrification fortune inspection

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