CN105896470A - Double loop network-based protection device free of main in-situ transformer and protection method - Google Patents

Double loop network-based protection device free of main in-situ transformer and protection method Download PDF

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Publication number
CN105896470A
CN105896470A CN201610393714.2A CN201610393714A CN105896470A CN 105896470 A CN105896470 A CN 105896470A CN 201610393714 A CN201610393714 A CN 201610393714A CN 105896470 A CN105896470 A CN 105896470A
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CN
China
Prior art keywords
protection
handset
pressure
transformer
dual
Prior art date
Application number
CN201610393714.2A
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Chinese (zh)
Inventor
胡兵
郭晓
陈福锋
李玉平
行武
王哲
Original Assignee
南京国电南自电网自动化有限公司
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Application filed by 南京国电南自电网自动化有限公司 filed Critical 南京国电南自电网自动化有限公司
Priority to CN201610393714.2A priority Critical patent/CN105896470A/en
Publication of CN105896470A publication Critical patent/CN105896470A/en

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    • 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
    • H02H7/04Emergency 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 for transformers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/0006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks
    • H02J13/0013Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks characterised by transmission structure between the control or monitoring unit and the controlled or monitored unit
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems

Abstract

The invention discloses a double loop network-based protection device free of a main in-situ transformer and a protection method. The double loop network-based protection device free of the main in-situ transformer comprises in-situ protection sub-machines, which are arranged at a high-voltage side, a medium-voltage side and a low-voltage side of a transformer respectively; the protection sub-machines are in hand-in-hand connection through double loop networks; each protection sub-machine collects the analogue quantity and the switch quantity of the side in situ, and is in bidirectional communication with the other protection sub-machines through the double loop networks to share data; each protection sub-machine comprises the same main and backup protection-integrated protection module for the transformer; a circuit breaker is arranged between each protection sub-machine and the side of the transformer; and each protection module trips off the corresponding circuit breaker according to the set backup protection action conditions and differential protection action conditions. By the double loop network-based protection device free of the main in-situ transformer and the protection method, the problem that a host of an existing protection device with the main transformer cannot be installed in situ is solved; and furthermore, multiple sets of differential 'conjunction gate' logics are adopted by the protection device, so that the protection reliability is improved.

Description

Dereliction formula site protection equipment for transformer based on dual-ring network and guard method
Technical field
The invention belongs to field of relay protection in power, be specifically related to a kind of dereliction formula site transformator based on dual-ring network Protection device and guard method.
Background technology
Protection and monitoring device each group screen, centralized arrangement in conventional substation, on-the-spot cabling is numerous and diverse and mostly is hardwired, band Come more maintenance workload and unreliable factor.In recent years, conventional substation is gradually used " routine transformer+merging Unit " intelligent substation substituted, by combining unit and intelligent terminal's in-site collecting analog quantity and switching value, and pass through light The fine protective relaying device accessing master control room, instead of long cable with optical fiber, and secondary circuit is simplified.
The intelligent station of " routine transformer+combining unit ", intermediate link is many, and movement time is long, and it is average that intelligent station is protected Movement time 8-10ms longer than GPF (General Protection False, and single equipment fault is likely to result in many set protection incorrect operations, protection Rapidity and integrity problem become increasingly conspicuous.Based on relay protection for many years successful theory and practice exploration, many both at home and abroad Multi-expert proposes the relay protection site installed by existing concentration group screen, cancels the adapter ring such as combining unit and intelligent terminal Joint, Secondary Design and construction are greatly simplified, and decrease transformer station's construction area, reduce construction costs, it is simple to safeguard, examine Repair and make an inspection tour.
For the relay protection of monospace, such as route protection, mother protection etc., owing to a secondary device correspondence is strong, it is just The enforcement of groundization is relatively easy.But for the tranformer protection across interval, needing the analog quantity gathered more, loop is complicated, Plant bulk certainly will be caused excessive and cannot install on the spot, if it addition, using the pattern of " handset+main frame ", i.e. handset For in-site collecting, main frame is used for relay protective scheme computing, according to Operation of Electric Systems maintenance procedure, is difficult to find suitably Main frame is installed in place.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of dereliction formula site protection equipment for transformer based on dual-ring network and protection side Method.
Realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of dereliction formula site protection equipment for transformer based on dual-ring network, including be separately positioned on high voltage side of transformer, in Press the protection handset of the site of side, low-pressure side, by dual-ring network connection hand in hand between each protection handset, respectively protect handset The electric current of this side of in-site collecting, voltage analog and switching value, and shared with other protection handset two-way communication by dual-ring network Data;Each protection handset is respectively provided with identical transformator master, the protection module of back-up protection integration, each protection handset and change Being provided with chopper between each side of depressor, protection module is according to back-up protection operation condition and differential protection operation condition, tripping phase The chopper answered.
Described tripping switchs accordingly particularly as follows: when this side protection handset meets back-up protection operation condition, protect module control Make the direct tripping of chopper being connected with this side protection handset, when protected handset is satisfied by differential protection operation condition, Protection module controls and the corresponding chopper tripping of each protection handset.
Described high voltage side of transformer, medium voltage side, the protection handset of site of low-pressure side, including: high pressure 1 side protection handset, High pressure 2 side protection handset, transformer neutral point protection handset, public winding protection handset, medium voltage side protection handset, low pressure 1 branch's protection handset, low pressure 2 branch protection handset, low pressure 1 branch reactor protection handset, low pressure 2 branch reactor Protection handset, low-pressure side ground connection become protection handset.
The protection handset of described on high-tension side protection handset and low-pressure side is respectively connected to A, B net of MMS network, with backstage and Control centre communicates.
Described high-pressure side protection handset and low-pressure side protection handset are concurrently accessed GOOSE network, with other protection device and fault Wave recording device communicates, and when both is properly functioning, the high-pressure side protection handset high by priority is responsible for externally and other device Transmitting-receiving GOOSE message, low-pressure side protection handset is in stops letter state with outside, and is protected by dual-ring network monitoring high-pressure side The running status of handset, when high-pressure side protection handset exits because of fault or maintenance, is replaced high-pressure side by low-pressure side protection handset Handset is responsible for the transmitting-receiving of external GOOSE message.
Described each protection handset is respectively provided with software address, and this software address is simultaneously as the mailing address within looped network and protection handset class The identification code of type;Described a kind of based on dual-ring network dereliction formula site protection equipment for transformer, also includes control box, institute State protection module and controlled the state of the switch being connected with each side protection handset by control box;Described control box also output switch amount Handset is protected to each side.
A kind of guard method applying dereliction formula site protection equipment for transformer based on dual-ring network, comprises the following steps:
Each electric current, voltage analog and switching value protecting this side of handset in-site collecting, and by dual-ring network and other protection Data are shared in machine two-way communication;
Protection module, according to back-up protection operation condition and differential protection operation condition, controls the corresponding chopper of tripping.
The corresponding chopper of described tripping is particularly as follows: when this side protection handset meets back-up protection operation condition, protect module Control the direct tripping of chopper being connected with this side protection handset, when protected handset is satisfied by differential protection operation condition Time, protection module controls and the corresponding chopper tripping of each protection handset.
The guard method of described a kind of application dereliction formula site protection equipment for transformer based on dual-ring network, also includes height The protection handset of pressure side and the protection handset of low-pressure side are respectively connected to A, B net of MMS network, lead to backstage and control centre Letter, it is ensured that when arbitrary protection handset break down or overhaul exit time, all will not interrupt dereliction formula based on dual-ring network on the spot Change protection equipment for transformer and backstage and the communication of control centre.
The guard method of described a kind of application dereliction formula site protection equipment for transformer based on dual-ring network, also includes height Pressure side protection handset and low-pressure side protection handset are concurrently accessed GOOSE network, lead to other protection device and fault wave recording device Letter, when both is properly functioning, is responsible for externally and other device transmitting-receiving GOOSE by the high-pressure side protection handset that priority is high Message, low-pressure side protection handset is in stops letter state with outside, and by the operation of dual-ring network monitoring high-pressure side protection handset State, when high-pressure side protection handset exits because of fault or maintenance, low-pressure side protection handset replacement high-pressure side handset it is right to be responsible for The transmitting-receiving of outer GOOSE message.
Beneficial effects of the present invention:
The dereliction formula site protection equipment for transformer based on dual-ring network of the present invention and guard method, use distribution transformer The multiple protection handsets of relaying configuration, protection handset only gathers analog quantity and the switching value of this side, shares data by dual-ring network, Therefore handset volume is little, it is possible to install on the spot;And traditional centralized tranformer protection, owing to it to gather the simulation of each side Amount and switching value data, cause volume big, it is impossible to install on the spot.
The dereliction formula site protection equipment for transformer based on dual-ring network of the present invention and guard method, use dereliction formula site Protection equipment for transformer, efficiently solve have at present main formula protection equipment for transformer main frame cannot installation question on the spot, and often Individual handset is all configured with identical differential protection function, when all handsets are satisfied by differential protection operation condition, and differential protection Just action tripping operation, it is achieved that many set differential " with door " logics, thus improve the reliability of differential protection.
Accompanying drawing explanation
Fig. 1 is the topology signal of a kind of embodiment of the dereliction formula site protection equipment for transformer based on dual-ring network of the present invention Figure.
Fig. 2 is the one of the guard method of a kind of application dereliction based on dual-ring network formula site protection equipment for transformer of the present invention Plant the schematic flow sheet of embodiment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is entered Row further describes.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to Limit the present invention.
Below in conjunction with the accompanying drawings the application principle of the present invention is explained in detail.
Seeing Fig. 1, a kind of dereliction formula site protection equipment for transformer based on dual-ring network, including being separately positioned on transformator High-pressure side, medium voltage side, low-pressure side site protection handset (that is: high-pressure side main transformer protection handset, medium voltage side main transformer protect Protect handset, low-pressure side main transformer protection handset), connected hand in hand by gigabit dual-ring network between each protection handset, so that it is guaranteed that High reliability;Each electric current, voltage analog and switching value protecting this side of handset in-site collecting, and by dual-ring network and its Data are shared in its protection handset two-way communication;Each protection handset is respectively provided with identical transformator master, the guarantor of back-up protection integration Protecting module, be provided with chopper between each protection handset and each side of transformator, protection module is according to the back-up protection action bar set Part and differential protection operation condition, the corresponding chopper of tripping.
In the present invention, the described back-up protection operation condition set and differential protection operation condition as: protection act condition is Ultimate principle based on relay protection, including multiple protection, such as longitudinal difference protection, again press overcurrent protection, zero-sequencedirectional protection, Impedance protection, failure protection etc..
In an embodiment of the present invention, each protection handset is all connected with gigabit dual-ring network by looped network mouth.
In an embodiment of the present invention, the corresponding chopper of described tripping meets standby particularly as follows: work as this side protection handset During protection act condition, protection module controls the direct tripping of chopper being connected with this side protection handset, back-up protection action bar Part uses the analog quantity that electric current or the voltage of in-site collecting, i.e. this protection handset gather;When institute, protected handset is the fullest During foot differential protection operation condition, protection module controls and the corresponding chopper tripping of each protection handset.
In an embodiment of the present invention, the protection handset of described on high-tension side protection handset and low-pressure side is respectively connected to MMS The A net of network, B net, communicate with backstage and control centre, it is ensured that exits when arbitrary protection handset breaks down or overhauls Time, all will not interrupt dereliction formula site protection equipment for transformer based on dual-ring network and backstage and the communication of control centre.Adopt The reliability of communication can be improved with dual network.
In an embodiment of the present invention, described high-pressure side protection handset and low-pressure side protection handset are concurrently accessed GOOSE net Network, and other protection device (such as: bus protection, breaker protection) and fault wave recording device communication, when both just When often running, the high-pressure side protection handset that priority is high being responsible for externally and other device transmitting-receiving GOOSE message, low-pressure side is protected Protect handset to be in and stop letter state with outside, and by the running status of dual-ring network monitoring high-pressure side protection handset, work as high-pressure side Protection handset because of fault or maintenance exit time, low-pressure side protection handset replace high-pressure side handset and be responsible for external GOOSE message Transmitting-receiving.
In an embodiment of the present invention, described high voltage side of transformer, medium voltage side, the protection handset of site of low-pressure side, Including: high pressure 1 side protection handset, high pressure 2 side protection handset, transformer neutral point protection handset, public winding protection Machine, medium voltage side protection handset, low pressure 1 branch protection handset, low pressure 2 branch protection handset, low pressure 1 branch reactor are protected Protect handset, low pressure 2 branch reactor protection handset, low-pressure side ground connection change protection handset;Described each protection handset is respectively provided with soft Address, this software address is simultaneously as the mailing address within looped network and the identification code of protection handset type, on the one hand as looped network Mailing address, on the other hand as the identification code of handset type, unites two into one, more convenient.Particularly as follows: 0x01 (high pressure 1 Side protection handset), 0x02 (high pressure 2 side protection handset), 0x03 (transformer neutral point protection handset), 0x04 are (public Winding protection handset altogether), 0x05 (medium voltage side protection handset), 0x06 (low pressure 1 branch protection handset), 0x07 is (low Press 2 branch's protection handsets), (low pressure 2 branch reactor is protected for 0x08 (low pressure 1 branch reactor protection handset), 0x09 Protect handset), 0x0A (low-pressure side ground connection becomes protection handset).In other embodiments of the invention, it is also possible to include other Protection handset.
Described a kind of based on dual-ring network dereliction formula site protection equipment for transformer, also includes control box, described protection mould Block controls the state of the chopper being connected with each side protection handset by control box;Described control box also exports open circuit tolerance to each Side protection handset.
See Fig. 2, the guard method of a kind of application dereliction based on dual-ring network formula site protection equipment for transformer, including with Lower step:
Each electric current, voltage analog and switching value protecting this side of handset in-site collecting, and by dual-ring network and other protection Data are shared in machine two-way communication;
Protection module, according to back-up protection operation condition and differential protection operation condition, controls the corresponding chopper of tripping.
The corresponding chopper of described tripping is particularly as follows: when this side protection handset meets back-up protection operation condition, protect module Control the direct tripping of chopper being connected with this side protection handset, when protected handset is satisfied by differential protection operation condition Time, protection module controls and the corresponding chopper tripping of each protection handset;Differential protection operation condition uses each handset and adopts The analog quantity of collection, does difference by the electric current of each protection handset.
The described guard method applying dereliction formula site protection equipment for transformer based on dual-ring network, also includes high-pressure side Protection handset and the protection handset of low-pressure side be respectively connected to A, B net of MMS network, communicate with backstage and control centre, Ensure that when arbitrary protection handset break down or overhaul exit time, all will not interrupt dereliction formula site based on dual-ring network become Depressor protection device and backstage and the communication of control centre;
The described guard method applying dereliction formula site protection equipment for transformer based on dual-ring network, also includes high-pressure side Protection handset and low-pressure side protection handset are concurrently accessed GOOSE network, and other protection device and fault wave recording device communication, When both is properly functioning, the high-pressure side protection handset that priority is high it is responsible for externally and other device transmitting-receiving GOOSE message, Low-pressure side protection handset is in stops letter state with outside, and by the running status of dual-ring network monitoring high-pressure side protection handset, When high-pressure side protection handset exits because of fault or maintenance, low-pressure side protection handset replace high-pressure side handset and be responsible for externally The transmitting-receiving of GOOSE message.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technical staff of the industry It should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and description, the present invention is simply described Principle, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these change Both fall within scope of the claimed invention with improvement.Claimed scope by appending claims and etc. Effect thing defines.

Claims (10)

1. a dereliction formula site protection equipment for transformer based on dual-ring network; it is characterized in that: include being separately positioned on the protection handset of the site of high voltage side of transformer, medium voltage side, low-pressure side; connected hand in hand by dual-ring network between each protection handset; each electric current, voltage analog and switching value protecting this side of handset in-site collecting, and share data by dual-ring network with other protection handset two-way communication;Each protection handset is respectively provided with identical transformator master, the protection module of back-up protection integration, is provided with chopper between each protection handset and each side of transformator, and protection module is according to back-up protection operation condition and differential protection operation condition, the corresponding chopper of tripping.
A kind of dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 1; it is characterized in that: described tripping switch accordingly particularly as follows: when this side protection handset meet back-up protection operation condition time; protection module controls the direct tripping of chopper being connected with this side protection handset; when protected handset is satisfied by differential protection operation condition, protection module controls and the corresponding chopper tripping of each protection handset.
A kind of dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 1 and 2; it is characterized in that: described high voltage side of transformer, medium voltage side, the protection handset of site of low-pressure side; including: high pressure 1 side protection handset, high pressure 2 side protection handset, transformer neutral point protection handset, public winding protection handset; medium voltage side protection handset, low pressure 1 branch protection handset, low pressure 2 branch protection handset, low pressure 1 branch reactor protection handset, low pressure 2 branch reactor protection handset, low-pressure side ground connection become protection handset.
A kind of dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 1 and 2; it is characterized in that: the protection handset of described on high-tension side protection handset and low-pressure side is respectively connected to A, B net of MMS network, communicates with backstage and control centre.
A kind of dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 4, it is characterized in that: described high-pressure side protection handset and low-pressure side protection handset are concurrently accessed GOOSE network, with other protection device and fault wave recording device communication, when both is properly functioning, it is responsible for externally and other device transmitting-receiving GOOSE message by the high-pressure side protection handset that priority is high, low-pressure side protection handset is in stops letter state with outside, and the running status by dual-ring network monitoring high-pressure side protection handset, when high-pressure side protection handset exits because of fault or maintenance, replaced high-pressure side handset by low-pressure side protection handset and be responsible for the transmitting-receiving of external GOOSE message.
A kind of dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 1, it is characterised in that: described each protection handset is respectively provided with software address, and this software address is simultaneously as the mailing address within looped network and the identification code of protection handset type;Described a kind of based on dual-ring network dereliction formula site protection equipment for transformer, also includes control box, and described protection module controls the state of the switch being connected with each side protection handset by control box;Described control box also output switch amount protects handset to each side.
7. the guard method of the dereliction formula site protection equipment for transformer based on dual-ring network applied described in claim 1 or 2, it is characterised in that comprise the following steps:
Each electric current, voltage analog and switching value protecting this side of handset in-site collecting, and share data by dual-ring network with other protection handset two-way communication;
Protection module, according to back-up protection operation condition and differential protection operation condition, controls the corresponding chopper of tripping.
A kind of guard method applying dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 7; it is characterized in that: the corresponding chopper of described tripping particularly as follows: when this side protection handset meet back-up protection operation condition time; protection module controls the direct tripping of chopper being connected with this side protection handset; when protected handset is satisfied by differential protection operation condition, protection module controls and the corresponding chopper tripping of each protection handset.
A kind of guard method applying dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 7; it is characterized in that: also include that the protection handset by high-tension side protection handset and low-pressure side is respectively connected to A, B net of MMS network; communicate with backstage and control centre; ensure that when arbitrary protection handset break down or overhaul exit time, all will not interrupt dereliction formula site protection equipment for transformer based on dual-ring network and backstage and the communication of control centre.
A kind of guard method applying dereliction formula site protection equipment for transformer based on dual-ring network the most according to claim 7, it is characterized in that: also include high-pressure side is protected handset and low-pressure side protection handset are concurrently accessed GOOSE network, with other protection device and fault wave recording device communication, when both is properly functioning, it is responsible for externally and other device transmitting-receiving GOOSE message by the high-pressure side protection handset that priority is high, low-pressure side protection handset is in stops letter state with outside, and the running status by dual-ring network monitoring high-pressure side protection handset, when high-pressure side protection handset exits because of fault or maintenance, replaced high-pressure side handset by low-pressure side protection handset and be responsible for the transmitting-receiving of external GOOSE message.
CN201610393714.2A 2016-06-03 2016-06-03 Double loop network-based protection device free of main in-situ transformer and protection method CN105896470A (en)

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CN107086552A (en) * 2017-06-21 2017-08-22 四川电力设计咨询有限责任公司 The protection circuit of enlarging unit connection type system
CN107681642A (en) * 2017-08-17 2018-02-09 国电南瑞科技股份有限公司 A kind of transformer station's site protects system
CN108508296A (en) * 2018-03-30 2018-09-07 许继集团有限公司 A kind of site element protection test method and system based on bidirectional loop network
CN108539714A (en) * 2018-04-18 2018-09-14 许继集团有限公司 A kind of distributed element differential protecting method and system
CN108565841A (en) * 2018-04-27 2018-09-21 许继集团有限公司 A kind of site protection handset progress control method and protection system
CN108667661A (en) * 2018-05-09 2018-10-16 国家电网公司 Site distributed protection managing main frame automatic number system and its method for numbering serial
CN108683578A (en) * 2018-04-16 2018-10-19 许继集团有限公司 Test method and test system are interrogated by a kind of site device ring Netcom
CN109193587A (en) * 2018-10-12 2019-01-11 南京南瑞继保电气有限公司 A kind of substation's site distributed protection system and remote operation method
CN109257263A (en) * 2018-10-15 2019-01-22 积成电子股份有限公司 A kind of site protective device data transmission method based on dual-ring network
CN109494880A (en) * 2018-12-27 2019-03-19 国网浙江省电力有限公司电力科学研究院 A kind of site bus protection station level information management implementation method
CN109687411A (en) * 2018-12-28 2019-04-26 国网浙江省电力有限公司电力科学研究院 A kind of definite value simultaneously operating method and apparatus for distributed element protection
CN109768533A (en) * 2018-12-28 2019-05-17 长园深瑞继保自动化有限公司 The method of the more handset synchronization actions of site element protection looped network
CN110048383A (en) * 2019-05-07 2019-07-23 南京国电南自电网自动化有限公司 A kind of power distribution network Distributed Integration protection system
CN110095687A (en) * 2019-05-07 2019-08-06 国网山东省电力公司枣庄供电公司 For the intelligent linkage method and system of fault wave recording device and traveling wave ranging device

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CN107086552A (en) * 2017-06-21 2017-08-22 四川电力设计咨询有限责任公司 The protection circuit of enlarging unit connection type system
CN107086552B (en) * 2017-06-21 2020-02-07 四川电力设计咨询有限责任公司 Protection circuit of extended cell wiring system
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CN107681642B (en) * 2017-08-17 2019-07-23 国电南瑞科技股份有限公司 A kind of substation's site protection system
CN108508296A (en) * 2018-03-30 2018-09-07 许继集团有限公司 A kind of site element protection test method and system based on bidirectional loop network
CN108683578B (en) * 2018-04-16 2020-11-10 许继集团有限公司 In-place device ring network communication test method and test system
CN108683578A (en) * 2018-04-16 2018-10-19 许继集团有限公司 Test method and test system are interrogated by a kind of site device ring Netcom
CN108539714A (en) * 2018-04-18 2018-09-14 许继集团有限公司 A kind of distributed element differential protecting method and system
CN108565841B (en) * 2018-04-27 2020-01-14 许继集团有限公司 Operation control method and protection system for on-site protection submachine
CN108565841A (en) * 2018-04-27 2018-09-21 许继集团有限公司 A kind of site protection handset progress control method and protection system
CN108667661A (en) * 2018-05-09 2018-10-16 国家电网公司 Site distributed protection managing main frame automatic number system and its method for numbering serial
CN109193587B (en) * 2018-10-12 2020-02-04 南京南瑞继保电气有限公司 Transformer substation local distributed protection system and remote operation method
CN109193587A (en) * 2018-10-12 2019-01-11 南京南瑞继保电气有限公司 A kind of substation's site distributed protection system and remote operation method
CN109257263A (en) * 2018-10-15 2019-01-22 积成电子股份有限公司 A kind of site protective device data transmission method based on dual-ring network
CN109257263B (en) * 2018-10-15 2021-01-29 积成电子股份有限公司 Data transmission method of on-site protection device based on double-loop network
CN109494880A (en) * 2018-12-27 2019-03-19 国网浙江省电力有限公司电力科学研究院 A kind of site bus protection station level information management implementation method
CN109768533A (en) * 2018-12-28 2019-05-17 长园深瑞继保自动化有限公司 The method of the more handset synchronization actions of site element protection looped network
CN109687411A (en) * 2018-12-28 2019-04-26 国网浙江省电力有限公司电力科学研究院 A kind of definite value simultaneously operating method and apparatus for distributed element protection
CN110095687A (en) * 2019-05-07 2019-08-06 国网山东省电力公司枣庄供电公司 For the intelligent linkage method and system of fault wave recording device and traveling wave ranging device
CN110048383A (en) * 2019-05-07 2019-07-23 南京国电南自电网自动化有限公司 A kind of power distribution network Distributed Integration protection system

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