CN102684173A - Quick network electric power relay protection system - Google Patents

Quick network electric power relay protection system Download PDF

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Publication number
CN102684173A
CN102684173A CN2012100970564A CN201210097056A CN102684173A CN 102684173 A CN102684173 A CN 102684173A CN 2012100970564 A CN2012100970564 A CN 2012100970564A CN 201210097056 A CN201210097056 A CN 201210097056A CN 102684173 A CN102684173 A CN 102684173A
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network
protection
data
starting
intelligent terminal
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CN2012100970564A
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CN102684173B (en
Inventor
许良柱
张加康
朱勇
陈荣
李亮
孙拥军
魏凯
周大谋
张世平
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NANJING RONGXIN ELECTRIC POWER AUTOMATION CO Ltd
Kaili power supply bureau
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NANJING RONGXIN ELECTRIC POWER AUTOMATION CO Ltd
Kaili power supply bureau
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Publication of CN102684173A publication Critical patent/CN102684173A/en
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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
    • 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
    • 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
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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Abstract

The invention relates to a quick network electric power relay protection system and belongs to the technical field of electric power relay protection. The quick network electric power relay protection system comprises intelligent terminals arranged on power distribution equipments, an optical fiber communication network, a network protection device and a network protection server, wherein the optical fiber communication network respectively connects the intelligent terminal with the network protection device, and connects the network protection device with the network protection server, and the intelligent terminal collects analog quantity and switching quantity operating condition data of the power distribution equipment and uploads the data to the network protection device; the network protection device gathers the data uploaded by the intelligent terminals, performs wide-area differential protection calculation and uploads the calculation results to the network protection server; and the network protection server displays the data uploaded by the network protection device, finishes intelligent setting and intelligent control according to the real-time change of network topology, and transmits the data to the network protection device. With the quick network electric power relay protection system, the number of secondary equipments is reduced, the management workload on the operation and maintenance of secondary equipments is relieved, and the benefit maximization of the power system is realized.

Description

The fast network system of relay protection
Technical field
The present invention relates to a kind of system of relay protection, belong to the electric relay protection technical field.
Background technology
The conventional electric power relaying protection system disposes according to single protected element; It is the protective device based on local measurement information and small number of regions information, ununified digital source, uniform data form; Sharing of data, the object of its protection is single a certain electric component (like circuit, transformer etc.).
The conventional electric power relaying protection system lacks overall co-ordination when electric power system has an accident, occur successive relay trip separately easily, causes accident expansion, system stability to destroy easily.Traditional protection configuration is complicated, adjust and definite value between cooperate difficulty.Therefore make the chronic of reserve section sometimes, be unfavorable for excising fast fault.
Traditional protection is at protection excision faulty equipment, and when the trend transfer that causes was supplied power in non-fault section transfer, the protection definite value was difficult to adapt to the variation of operational mode.
Harvester, the communicator of conventional electric power relaying protection system are optimized, repeated configuration, and group screen is more, and floor space is bigger, and secondary circuit is complicated, and maintenance workload is big.
Summary of the invention
The technical problem that the present invention solves is: proposes a kind ofly can carry out the system of relaying protection to the regional power grid that contains a plurality of transformer stations, thereby significantly reduce the quantity of secondary device, alleviate the operation of secondary device, the government pressure of maintenance, realize that grid benefit maximizes.
In order to solve the problems of the technologies described above; The technical scheme that the present invention proposes is: a kind of fast network system of relay protection; Comprise the intelligent terminal, optical fiber communication network, network protector and the network protection server that are arranged on the controller switching equipment; Said optical fiber communication network is connected with network protector, network protector intelligent terminal respectively with the network protection server
Said intelligent terminal is used to gather analog quantity, the switching value operating condition data of controller switching equipment, delivers to network protector on the net through SV data network and GOOSE control;
Said network protector is used to gather the data of sending on each intelligent terminal and protects calculating, and with giving the network protection server on the result, through SV data network and GOOSE control net control command is handed down to intelligent terminal simultaneously;
Said network protection server is used for the data that the display network protective device is uploaded; Accomplish intelligence according to the real-time change of network topology and adjust and Based Intelligent Control, and give network protector or distribution automation system with data distributing through SV data network and GOOSE control net.
The invention has the beneficial effects as follows:
1) the fast network protection is with the thought in " uniform data source; shared data "; Set up to cover the real-time collection network of protected area, the electric parameter of each protected element and running state parameter can be measured and transmit in real time in this network, and the protective device that has a Wide-area Measurement Information with the protected area as a whole; The region-wide defencive function of unified consideration is realized complicated grid defencive function.Object of protection is a plurality of elements in the zone.
2) the region-wide defencive function of the unified consideration of fast network protection system.The fast network protection has realized the data sharing of protected area; Under any circumstance can conveniently obtain differential protection, reclosing, the overcurrent protection of band direction or the required information of other protection; Reach quick identification fault, quick acting in a plurality of elements, isolated fault (dwindling the failure removal scope).
3) the fast network protection system is carried out the calculating that trend shifts before changes of operating modes, adjusts definite value automatically, and the power supply of the fast non-fault section of quick-recovery realizes the adaptive purpose that the fast network protection changes with power system operating mode.
4) each electric component protection uniform data collection of fast network protection system, protection group screen mode integrated level is high, the floor space of practicing thrift protection screen, secondary circuit is simplified, and the operation maintenance workload reduces.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further.
Fig. 1 is the system architecture diagram of the embodiment of the invention.
Fig. 2 is the system function module figure of the embodiment of the invention.
Embodiment
Embodiment
Present embodiment with the 220KV that covers the administration of electrical network Kerry, Guizhou power supply administration become to one's heart's content, the zone of 5 transformer stations such as changes of the public system of 110KV, changes of 110KV Leishan, the eternally happy change of 110KV, the river change of 220KV car and circuit is as the protected area of network protection, makes a concrete analysis of the building of network protection, function realization.
The fast network system of relay protection is as depicted in figs. 1 and 2; Comprise the intelligent terminal, optical fiber communication network, network protector and the network protection server that are arranged on the controller switching equipment; Said optical fiber communication network is connected with network protector, network protector intelligent terminal respectively with the network protection server
Intelligent terminal is used to gather analog quantity, the switching value operating condition data of controller switching equipment, delivers to network protector on the net through SV data network and GOOSE control;
Network protector is used to gather the data of sending on each intelligent terminal and protects calculating, and with giving the network protection server on the result, through SV data network and GOOSE control net control command is handed down to intelligent terminal simultaneously;
The network protection server is used for the data that the display network protective device is uploaded, and accomplishes intelligence according to the real-time change of network topology and adjusts and Based Intelligent Control, and give network protector or distribution automation system through SV data network and GOOSE control net with data distributing.
Intelligent terminal inserts the collection that instrument transformer is accomplished the variable connector analog quantity; Completion is done loop breaker tripping and closing or idle contact outlet output to the ribbon gymnastics of switch; Accomplish DC220V/DC110V photoelectricity and isolate input, accomplish the electrical network differential protection, accomplish the self diagnosis and the warning of power distribution equipment; Accomplish the status monitoring of switch and communication apparatus, accomplish to send data on the multiple stipulations; 10 outlets of said idle contact outlet output configuration, switch analog quantity input configuration 14 tunnel.
The wide area differential protection calculates the differential protection that comprises starting element, current change quantity starting, the starting of zero sequence overcurrent element, overcurrent element starting, the starting of zero sequence negative phase-sequence element and line differential protection element and calculates, wherein:
Starting element
ΔI ΦΦMAX＞1.25ΔI T+ΔI ZD
Δ I Φ Φ MAXIt is the maximum of the half-wave integration of three-phase current;
Δ I ZDBe the fixedly door that to adjust;
Δ I TThe door that be to float, the adjustment automatically along with the variation of variable quantity is got 1.25 times and can be guaranteed that door exports a little more than imbalance all the time;
The starting of zero sequence overcurrent element
When external and self-produced zero-sequence current during all greater than setting value, action of zero sequence starting element and broadening 3 seconds remove open exit relay positive supply;
The overcurrent element starting
When maximum phase current during greater than setting value, action of overcurrent starting element and broadening 3 seconds remove open exit relay positive supply;
The starting of zero sequence negative phase-sequence element
When zero sequence and negative phase-sequence sum during greater than setting value, zero sequence and the action of negative phase-sequence element and broadening 3 seconds remove open exit relay positive supply;
The line differential protection element
The differential protection of variable quantity phase current differential, the two sections phase current differentials of comprising of circuit are protected and Zero sequence current differential protection;
The operation equation of differential protection is:
I CDφ > 0.75 * I Rφ I CDφ > I H
Wherein each variable-definition is following:
φ＝A，B，C
I CD φ: differential current,
Figure BSA00000695828500042
For the both sides current phasor and amplitude,
I R φ: stalling current,
Figure BSA00000695828500051
Be the amplitude of both sides current phasor difference,
I H: the different in kind with differential protection is respectively difference stream high-set setting or low definite value.
The network protection server carries out superfluous fault reason to whole system, and the communication state of SV data network and GOOSE control net is kept watch on; When communication state is unusual, carry out latch-up protection;
The relevant information of the network protection system form with friendly man-machine interface is shown.
Optical fiber communication network, constitutes as access device with E1/LAN bridge, EPA switch as backbone network with SDH.
The present invention is not limited to the described concrete technical scheme of the foregoing description, and the technical scheme that all employings are equal to replacement formation is the protection range that the present invention requires.

Claims (5)

1. fast network system of relay protection; It is characterized in that: comprise the intelligent terminal, optical fiber communication network, network protector and the network protection server that are arranged on the controller switching equipment; Said optical fiber communication network is connected with network protector, network protector intelligent terminal respectively with the network protection server
Said intelligent terminal is used to gather analog quantity, the switching value operating condition data of controller switching equipment, delivers to network protector on the net through SV data network and GOOSE control;
Said network protector is used to gather the data of sending on each intelligent terminal and carries out the calculating of wide area differential protection, and with giving the network protection server on the result, through SV data network and GOOSE control net control command is handed down to intelligent terminal simultaneously;
Said network protection server is used for the data that the display network protective device is uploaded; Accomplish intelligence according to the real-time change of network topology and adjust and Based Intelligent Control, and give network protector or distribution automation system with data distributing through SV data network and GOOSE control net.
2. according to the said fast network system of relay protection of claim 1; It is characterized in that: said intelligent terminal inserts the collection that instrument transformer is accomplished the variable connector analog quantity, accomplishes the ribbon gymnastics of switch is done loop breaker tripping and closing or idle contact outlet output, accomplishes DC220V/DC110V photoelectricity and isolates input; Accomplish the electrical network differential protection; Accomplish the self diagnosis and the warning of power distribution equipment, accomplishes the status monitoring of switch and communication apparatus, completion is to send data on the multiple stipulations; 10 outlets of said idle contact outlet output configuration, switch analog quantity input configuration 14 tunnel.
3. according to the said fast network system of relay protection of claim 1; It is characterized in that: said wide area differential protection calculates the differential protection that comprises starting element, current change quantity starting, the starting of zero sequence overcurrent element, overcurrent element starting, the starting of zero sequence negative phase-sequence element and line differential protection element and calculates, wherein:
Starting element
ΔI ΦΦMAX＞1.25ΔI T+ΔI ZD
Δ I Φ Φ MAXIt is the maximum of the half-wave integration of three-phase current;
Δ I ZDBe the fixedly door that to adjust;
Δ I TThe door that be to float, the adjustment automatically along with the variation of variable quantity is got 1.25 times and can be guaranteed that door exports a little more than imbalance all the time;
The starting of zero sequence overcurrent element
When external and self-produced zero-sequence current during all greater than setting value, action of zero sequence starting element and broadening 3 seconds remove open exit relay positive supply;
The overcurrent element starting
When maximum phase current during greater than setting value, action of overcurrent starting element and broadening 3 seconds remove open exit relay positive supply;
The starting of zero sequence negative phase-sequence element
When zero sequence and negative phase-sequence sum during greater than setting value, zero sequence and the action of negative phase-sequence element and broadening 3 seconds remove open exit relay positive supply;
The line differential protection element
The differential protection of variable quantity phase current differential, the two sections phase current differentials of comprising of circuit are protected and Zero sequence current differential protection;
The operation equation of differential protection is:
I CDφ > 0.75 * I Rφ I CDφ > I H
Wherein each variable-definition is following:
φ＝A，B，C
I CD φ: differential current,
Figure FSA00000695828400022
For the both sides current phasor and amplitude,
I R φ: stalling current,
Figure FSA00000695828400023
Be the amplitude of both sides current phasor difference,
I H: the different in kind with differential protection is respectively difference stream high-set setting or low definite value.
4. according to the said fast network system of relay protection of claim 1, it is characterized in that: said network protection server carries out superfluous fault reason to whole system, and the communication state of SV data network and GOOSE control net is kept watch on; When communication state is unusual, carry out latch-up protection; The relevant information of the network protection system form with friendly man-machine interface is shown.
5. according to the arbitrary said fast network system of relay protection of claim 1-4, it is characterized in that: said optical fiber communication network, constitutes as access device with E1/LAN bridge, EPA switch as backbone network with SDH.
CN201210097056.4A 2012-04-05 2012-04-05 Quick network electric power relay protection system Expired - Fee Related CN102684173B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103219800A (en) * 2013-04-12 2013-07-24 南京四方亿能电力自动化有限公司 Microgrid relay protection strategy selection method based on GOOSE information
CN104682359A (en) * 2014-12-25 2015-06-03 国家电网公司 Relay protection method of power supply line
CN105140894A (en) * 2015-08-07 2015-12-09 许继电气股份有限公司 Phase difference principle based power distribution network differential protection method
CN105514951A (en) * 2015-11-27 2016-04-20 国家电网公司 Open-communication-realization-based distributed feeder automatic decision-making method
CN106329493A (en) * 2015-06-16 2017-01-11 中国南方电网有限责任公司 Region distance protection system based on self-adaptive blocking region
CN106532664A (en) * 2016-12-19 2017-03-22 苏州唐氏机械制造有限公司 Power network protection system
CN106532667A (en) * 2017-01-03 2017-03-22 中国南方电网有限责任公司 Adaptive method of network topology for differential protection parameters of smart power distribution network
CN108347032A (en) * 2018-03-08 2018-07-31 山东山矿测控技术有限公司 A method of preventing protective relaying maloperation work
CN111199494A (en) * 2019-12-19 2020-05-26 国网新疆电力有限公司 Method and device for improving setting calculation speed of power system
CN116054085A (en) * 2023-03-20 2023-05-02 南京国电南自电网自动化有限公司 Zero sequence braking method and system for preventing non-fault phase saturation differential protection misoperation

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103219800A (en) * 2013-04-12 2013-07-24 南京四方亿能电力自动化有限公司 Microgrid relay protection strategy selection method based on GOOSE information
CN104682359A (en) * 2014-12-25 2015-06-03 国家电网公司 Relay protection method of power supply line
CN106329493A (en) * 2015-06-16 2017-01-11 中国南方电网有限责任公司 Region distance protection system based on self-adaptive blocking region
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CN105514951A (en) * 2015-11-27 2016-04-20 国家电网公司 Open-communication-realization-based distributed feeder automatic decision-making method
CN105514951B (en) * 2015-11-27 2018-04-20 国家电网公司 A kind of distributed feeder automation decision-making technique realized based on open communication
CN106532664A (en) * 2016-12-19 2017-03-22 苏州唐氏机械制造有限公司 Power network protection system
CN106532667A (en) * 2017-01-03 2017-03-22 中国南方电网有限责任公司 Adaptive method of network topology for differential protection parameters of smart power distribution network
CN108347032A (en) * 2018-03-08 2018-07-31 山东山矿测控技术有限公司 A method of preventing protective relaying maloperation work
CN111199494A (en) * 2019-12-19 2020-05-26 国网新疆电力有限公司 Method and device for improving setting calculation speed of power system
CN111199494B (en) * 2019-12-19 2023-06-23 国网新疆电力有限公司 Method and device for improving setting calculation speed of power system
CN116054085A (en) * 2023-03-20 2023-05-02 南京国电南自电网自动化有限公司 Zero sequence braking method and system for preventing non-fault phase saturation differential protection misoperation

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Inventor after: Xu Liangzhu

Inventor after: Sun Yongjun

Inventor after: Zhu Yong

Inventor after: Chen Rong

Inventor after: Li Liang

Inventor after: Zhang Jiakang

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Inventor before: Zhang Jiakang

Inventor before: Zhu Yong

Inventor before: Chen Rong

Inventor before: Li Liang

Inventor before: Sun Yongjun

Inventor before: Wei Kai

Inventor before: Zhou Damou

Inventor before: Zhang Shiping

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Free format text: CORRECT: INVENTOR; FROM: XU LIANGZHU ZHANG JIAKANG ZHU YONG CHEN RONG LI LIANG SUN YONGJUN WEI KAI ZHOU DAMOU ZHANG SHIPING TO: XU LIANGZHU SUN YONGJUN ZHU YONG CHEN RONG LI LIANG ZHANG JIAKANG WEI KAI ZHOU DAMOU ZHANG SHIPING

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