CN103001327A - Centralized protection measurement and control system of digital traction substation - Google Patents

Centralized protection measurement and control system of digital traction substation Download PDF

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Publication number
CN103001327A
CN103001327A CN2012104628260A CN201210462826A CN103001327A CN 103001327 A CN103001327 A CN 103001327A CN 2012104628260 A CN2012104628260 A CN 2012104628260A CN 201210462826 A CN201210462826 A CN 201210462826A CN 103001327 A CN103001327 A CN 103001327A
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Prior art keywords
centralized protection
protection measure
centralized
merge cells
intelligent breaker
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CN2012104628260A
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Chinese (zh)
Inventor
王牣
陈德明
韩正庆
陈小川
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CHENGDU SOUTHWEST JIAOTONG UNIVERSITY XUJI ELECTRIC Co Ltd
Southwest Jiaotong University
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CHENGDU SOUTHWEST JIAOTONG UNIVERSITY XUJI ELECTRIC Co Ltd
Southwest Jiaotong University
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Priority to CN2012104628260A priority Critical patent/CN103001327A/en
Publication of CN103001327A publication Critical patent/CN103001327A/en
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    • 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
    • Y04S10/16Electric power substations

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Abstract

The invention discloses a centralized protection measurement and control system of a digital traction substation. The system comprises process layer equipment, spacer layer equipment and station control layer equipment. The process layer equipment comprises electronic transformers, merging units and intelligent circuit breakers, the electronic transformers are connected with the merging units, the spacer layer equipment comprises two centralized protection measurement and control units which are mutually redundant, the merging units and the intelligent circuit breakers are connected with the two centralized protection measurement and control units, and the station control layer equipment comprises a work station which is connected with the two centralized protection measurement and control units. The invention further discloses an operation method of the system. The system can coordinate and match the equipment in the substation, and the traction substation can be guaranteed to operate safely and stably.

Description

The centralized protection TT﹠C system of digitlization traction substation
Technical field
The present invention relates to traction substation, specifically centralized protection TT﹠C system and the operation method thereof of digitlization traction substation.
Background technology
Traction substation is as an important node of tractive power supply system, and it is undertaking the delivery of electrical energy of electric railway and the task of distribution, and it is significant therefore to guarantee that it safely and steadily runs.At present, the secondary device in the conventional electric substation generally adopts towards the interval, the layered distribution type structure of functional independence, and control, supervision, protection, failure wave-recording, metering and measurement etc. all are to be finished by separate device.Traction substation adopts above-mentioned pattern that the shortcoming that secondary connection is complicated, cost of investment is large, information can not be shared, the operation and maintenance cost is high, lack Total tune and function optimization is arranged.These devices do not have overall visual angle based on single-point information, often can do because effective information is not enough make mistake or local optimum but not the judgement of global optimum, thereby affect security of system stable operation.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art; providing a kind of can unify to coordinate and cooperate to the equipment in the electric substation; and can guarantee the centralized protection TT﹠C system of the digitlization traction substation of traction substation safe and stable operation, the present invention also provides the operation method of the centralized protection TT﹠C system of this digitlization traction substation.
Purpose of the present invention is achieved through the following technical solutions: the centralized protection TT﹠C system of digitlization traction substation; comprise process layer devices; bay device and station level equipment; described process layer devices comprises electronic mutual inductor; merge cells and intelligent breaker; described electronic mutual inductor is connected with merge cells; described bay device comprises two each other centralized protection measure and control devices of redundancy; described merge cells and intelligent breaker all are connected with two centralized protection measure and control devices, and described station level equipment comprises the work station that is connected with two centralized protection measure and control devices.Integrated tranformer protection, protection for feed line, capacitor protection and the function of mending protection, observing and controlling and other protective devices in the centralized protection measure and control device of the invention; so; be equivalent to a central computer when the invention is used and concentrate complete facility information, form flexible, reliable, various, complementary centralized protection system.Merge cells in the invention is the interface equipment of Electrical Instrument Transducers with Digital output, and its major function is the digital signal that gathers electronic mutual inductor output, and form sends according to the rules.
The first networking mode among the present invention; described two centralized protection measure and control devices are connected with respectively two switches; two switches that each centralized protection measure and control device connects connect respectively merge cells and intelligent breaker, and described merge cells and intelligent breaker all are connected with centralized protection measure and control device by being connected on the switch.
The second networking mode among the present invention, described two centralized protection measure and control devices are connected with respectively a switch, and described intelligent breaker is connected with centralized protection measure and control device by being connected on the switch.
The centralized protection TT﹠C system of the digitlization traction substation of the first networking mode and the second networking mode includes two GPS timing devices; a GPS timing device is connected with two centralized protection measure and control devices in two GPS timing devices, and another GPS timing device is connected with merge cells, intelligent breaker and electronic mutual inductor.
The third networking mode among the present invention, described two centralized protection measure and control devices are connected with respectively a switch, and described merge cells and intelligent breaker all are connected with centralized protection measure and control device by being connected on the switch.
The centralized protection TT﹠C system of the digitlization traction substation of the third networking mode comprises a GPS timing device, and the switch of two centralized protection measure and control device connections all is connected with this GPS timing device.
Described process layer devices comprises that many groups are by an electronic mutual inductor; a merge cells and the data acquisition control unit group that intelligent breaker consists of; the merge cells of every group of data acquisition control unit group all is connected on the SMV message transmissions bus; two centralized protection measure and control devices are connected the connection of merge cells on SMV message transmissions bus; the intelligent breaker of every group of data acquisition control unit group all is connected on the GOOSE message bus, and two centralized protection measure and control devices are connected the connection of intelligent breaker on GOOSE message bus.
Work station in the described station level equipment adopts the dual redundant configuration, and work station all is connected on the station level bus, and two centralized protection measure and control devices all are connected with work station by being connected on the station level bus.
Described station level equipment also comprises printer and the router that is connected on the station level bus.
The operation method of the centralized protection TT﹠C system of digitlization traction substation, may further comprise the steps: step 1, electronic mutual inductor collecting device information, and the information that collects sent to merge cells, merge cells sends to centralized protection measure and control device after the Information encapsulation that receives is organized into the SMV message, meanwhile, intelligent breaker also is sent on off state information in the centralized protection measure and control device;
Step 2, centralized protection measure and control device are made the logic judgement in conjunction with on off state information and sampled value information, exit instruction are organized into the GOOSE message again, and then the GOOSE message sends to intelligent breaker;
Step 3, intelligent breaker are finished corresponding control according to the GOOSE message that receives.
The ethernet communication network that adopts switch to form in the invention is switching Ethernet, its advantage is not have the frame collision phenomenon, connected each node exclusively enjoys bandwidth, and each node operation also needs CSMA/CD agreement (compatibility reason), but can not keep out of the way, retransmit because detecting conflict.
Compared with prior art, the present invention has following beneficial effect: the present invention includes process layer devices, bay device and station level equipment, wherein, process layer devices comprises electronic mutual inductor, merge cells and intelligent breaker, bay device comprises two centralized protection measure and control devices, station level equipment comprises the work station that is connected with two centralized protection measure and control devices, overall structure of the present invention is simple, be convenient to realize, centralized protection measure and control device of the present invention is integrated traction substation complete defencive function, protection to full institute equipment is carried out unified coordination and is cooperated, convenient realize that definite value is switched and also prevent misoperation, simultaneously because the significant minimizing of protective device, reduced the impact that protective value is subjected to the environmental factors such as temperature and humidity, strengthen anti-interference, improved protective value and reliability; Two centralized protection measure and control devices are redundant each other in the invention; two centralized protection measure and control device real time communication; mutually verification; for subsequent use each other; can independently throw and move back; reliability and the fail safe of protection system have been improved; each centralized protection measure and control device can both be realized separately complete defencive function; when one of them centralized protection measure and control device breaks down when causing protection action delay or tripping, malfunction; another centralized protection measure and control device can in time come into operation, and guarantees the safe and stable operation of traction substation.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the structural representation of the embodiment of the invention two;
Fig. 3 is the structural representation of the embodiment of the invention three.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment one:
As shown in Figure 1; the centralized protection TT﹠C system of digitlization traction substation; comprise process layer devices; bay device and station level equipment; wherein; process layer devices comprises that many groups are by an electronic mutual inductor; a merge cells and the data acquisition control unit group that intelligent breaker consists of; process layer devices has multi-group data and gathers the control unit group; the electronic mutual inductor of every group of data acquisition control unit group is connected with merge cells in it; bay device comprises two each other centralized protection measure and control devices of redundancy; merge cells and intelligent breaker all are connected with two centralized protection measure and control devices; station level equipment comprises work station; printer and router, the work station in the station level equipment adopts the dual redundant configuration.Present embodiment comprises a station level bus and two process layer buses; article two, the process layer bus is respectively as SMV message transmissions bus and GOOSE message transmissions bus; printer, router, work station and centralized protection measure and control device all are connected with the station level bus; merge cells all is connected with SMV message transmissions bus, and intelligent breaker all is connected with GOOSE message transmissions bus.Two centralized protection measure and control devices are connected with respectively two switches; a switch is connected with SMV message transmissions bus in two switches that each centralized protection measure and control device connects; another switch is connected with GOOSE message transmissions bus, and then finishes being connected of merge cells and intelligent breaker and centralized protection measure and control device.Present embodiment also comprises two GPS timing devices, and a GPS timing device is connected with two centralized protection measure and control devices, and another GPS timing device is connected with merge cells with intelligent breaker.For the transmission of guarantee information, the connection of adopting in the present embodiment all adopts optical fiber to connect.
The independent networking of GOOSE in the present embodiment, SMV message by each merge cells through many Optical Fiber Transmission to switch, in a bus fibre was sent to centralized protection measure and control device, communication standard adopted IEC61850-9-2 without exception again.Dispose two centralized protection measure and control devices; each centralized protection measure and control device respectively disposes two switches; one is used for receiving and sending the SMV message to protective device; another is used for receiving the GOOSE message that centralized protection measure and control device transmits; mode with multicast sends to intelligent breaker with exit instruction; the switching of control circuit breaker disconnecting link, thus realize centralized defencive function.
During the present embodiment operation; electronic mutual inductor gathers relevant device information; by optical fiber data message is sent to merge cells; after each merge cells is organized into the SMV message with the Information encapsulation that receives; send to switch through optical fiber; re-send to centralized protection measure and control device; meanwhile; intelligent breaker also is sent on off state information in the centralized protection measure and control device; centralized protection measure and control device is in conjunction with on off state information; call successively protection algorithm routine bag the logic decision result is calculated and provided to sampled value information; then with exit instruction (for example tripping operation; alarm; reclosing etc.) be organized into the GOOSE message; start message and send task; pass through Networks of Fiber Communications; the GOOSE message is sent to intelligent performance element, and intelligent breaker is finished corresponding control according to the GOOSE message that receives, thereby realizes defencive function.
Embodiment two:
Present embodiment is with the main distinction of embodiment one: the quantity of the switch that each centralized protection measure and control device is connected in the present embodiment is one; between two centralized protection measure and control devices and the SMV message transmissions bus by switch, but directly connection.The SMV message data is used the point-to-point mode of directly adopting in the present embodiment, and by switch, merge cells directly is not sent to Networks of Fiber Communications with the SMV message, can avoid like this owing to the shake (delay-non-determinism) of using switch to bring.
Embodiment three:
The main distinction of present embodiment and embodiment one is: only have a GPS timing device in the present embodiment; the quantity of the switch that each centralized protection measure and control device connects is one; the GPS timing device directly is not connected with centralized protection measure and control device, merge cells and intelligent breaker, but be connected to respectively with two switches that two centralized protection measure and control devices are connected on.Present embodiment adopts the unification of three nets scheme, system when three nets namely refer to 1588 couples of SMV net, GOOSE net and IEEE.These three kinds of information are the access procedure layer switch simultaneously, and the protection measure and control device just can all access with a network interface, has simplified system configuration.
As mentioned above, then can well realize the present invention.

Claims (10)

1. the centralized protection TT﹠C system of digitlization traction substation; it is characterized in that; comprise process layer devices, bay device and station level equipment; described process layer devices comprises electronic mutual inductor, merge cells and intelligent breaker; described electronic mutual inductor is connected with merge cells; described bay device comprises two each other centralized protection measure and control devices of redundancy; described merge cells and intelligent breaker all are connected with two centralized protection measure and control devices, and described station level equipment comprises the work station that is connected with two centralized protection measure and control devices.
2. the centralized protection TT﹠C system of digitlization traction substation according to claim 1; it is characterized in that; described two centralized protection measure and control devices are connected with respectively two switches; two switches that each centralized protection measure and control device connects connect respectively merge cells and intelligent breaker, and described merge cells and intelligent breaker all are connected with centralized protection measure and control device by being connected on the switch.
3. the centralized protection TT﹠C system of digitlization traction substation according to claim 1; it is characterized in that; described two centralized protection measure and control devices are connected with respectively a switch, and described intelligent breaker is connected with centralized protection measure and control device by being connected on the switch.
4. according to claim 2 or the centralized protection TT﹠C system of 3 described digitlization traction substations; it is characterized in that; also comprise two GPS timing devices; a GPS timing device is connected with two centralized protection measure and control devices in two GPS timing devices, and another GPS timing device is connected with merge cells, intelligent breaker and electronic mutual inductor.
5. the centralized protection TT﹠C system of digitlization traction substation according to claim 1; it is characterized in that; described two centralized protection measure and control devices are connected with respectively a switch, and described merge cells and intelligent breaker all are connected with centralized protection measure and control device by being connected on the switch.
6. the centralized protection TT﹠C system of digitlization traction substation according to claim 5 is characterized in that, also comprises a GPS timing device, and the switch of two centralized protection measure and control device connections all is connected with this GPS timing device.
7. the centralized protection TT﹠C system of digitlization traction substation according to claim 1; it is characterized in that; described process layer devices comprises that many groups are by an electronic mutual inductor; a merge cells and the data acquisition control unit group that intelligent breaker consists of; the merge cells of every group of data acquisition control unit group all is connected on the SMV message transmissions bus; two centralized protection measure and control devices are connected the connection of merge cells on SMV message transmissions bus; the intelligent breaker of every group of data acquisition control unit group all is connected on the GOOSE message bus, and two centralized protection measure and control devices are connected the connection of intelligent breaker on GOOSE message bus.
8. the centralized protection TT﹠C system of digitlization traction substation according to claim 1; it is characterized in that; work station in the described station level equipment adopts the dual redundant configuration; work station all is connected on the station level bus, and two centralized protection measure and control devices all are connected with work station by being connected on the station level bus.
9. the centralized protection TT﹠C system of digitlization traction substation according to claim 8 is characterized in that, described station level equipment also comprises printer and the router that is connected on the station level bus.
10. the operation method of the centralized protection TT﹠C system of digitlization traction substation, it is characterized in that, may further comprise the steps: step 1, electronic mutual inductor collecting device information, and the information that collects sent to merge cells, merge cells sends to centralized protection measure and control device after the Information encapsulation that receives is organized into the SMV message, meanwhile, intelligent breaker also is sent on off state information in the centralized protection measure and control device;
Step 2, centralized protection measure and control device are made the logic judgement in conjunction with on off state information and sampled value information, exit instruction are organized into the GOOSE message again, and then the GOOSE message sends to intelligent breaker;
Step 3, intelligent breaker are finished corresponding control according to the GOOSE message that receives.
CN2012104628260A 2012-11-16 2012-11-16 Centralized protection measurement and control system of digital traction substation Pending CN103001327A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104009546A (en) * 2014-06-16 2014-08-27 遵义长征电器开关设备有限责任公司 Intelligent controller for intelligent low-voltage circuit breaker
CN104052036A (en) * 2014-06-13 2014-09-17 遵义长征电器开关设备有限责任公司 Intelligent controller used for intelligent low-voltage breaker
CN104135066A (en) * 2014-04-09 2014-11-05 国电南瑞科技股份有限公司 Intelligent substation system
CN104836626A (en) * 2015-01-15 2015-08-12 国网四川省电力公司电力科学研究院 Digital transformer station distributed test system
CN106451353A (en) * 2016-12-19 2017-02-22 北京交通大学 Protection scheme for multiple transformers
CN107846077A (en) * 2017-11-06 2018-03-27 成都交大许继电气有限责任公司 Intelligent railway distribution substation Protection control system and its operation method
CN108512311A (en) * 2018-05-07 2018-09-07 国家电网公司 A kind of intelligent substation bay device cluster measure and control device
CN109347070A (en) * 2018-09-30 2019-02-15 成都交大许继电气有限责任公司 A kind of state monitoring and protection system suitable for high-speed railway Traction networks

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102255394A (en) * 2011-08-08 2011-11-23 青岛特锐德电气股份有限公司 Digital intelligent box-type power transformation device
CN202076849U (en) * 2011-06-03 2011-12-14 云南电网公司普洱供电局 Centralized protection, measurement and control device for transformer station
EP2400617A1 (en) * 2010-06-24 2011-12-28 ABB Technology AG Implementing a substation automation load transfer function
CN102394506A (en) * 2011-12-13 2012-03-28 东北电力科学研究院有限公司 Multifunctional intelligent station integrating transformation, charging and conversion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2400617A1 (en) * 2010-06-24 2011-12-28 ABB Technology AG Implementing a substation automation load transfer function
CN202076849U (en) * 2011-06-03 2011-12-14 云南电网公司普洱供电局 Centralized protection, measurement and control device for transformer station
CN102255394A (en) * 2011-08-08 2011-11-23 青岛特锐德电气股份有限公司 Digital intelligent box-type power transformation device
CN102394506A (en) * 2011-12-13 2012-03-28 东北电力科学研究院有限公司 Multifunctional intelligent station integrating transformation, charging and conversion

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张晓华等: "智能变电站二次设备的状态监测技术研究", 《电气技术》 *
李茂亮: "牵引变电所集中式保护设计", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104135066A (en) * 2014-04-09 2014-11-05 国电南瑞科技股份有限公司 Intelligent substation system
CN104052036A (en) * 2014-06-13 2014-09-17 遵义长征电器开关设备有限责任公司 Intelligent controller used for intelligent low-voltage breaker
CN104009546A (en) * 2014-06-16 2014-08-27 遵义长征电器开关设备有限责任公司 Intelligent controller for intelligent low-voltage circuit breaker
CN104836626A (en) * 2015-01-15 2015-08-12 国网四川省电力公司电力科学研究院 Digital transformer station distributed test system
CN106451353A (en) * 2016-12-19 2017-02-22 北京交通大学 Protection scheme for multiple transformers
CN107846077A (en) * 2017-11-06 2018-03-27 成都交大许继电气有限责任公司 Intelligent railway distribution substation Protection control system and its operation method
CN108512311A (en) * 2018-05-07 2018-09-07 国家电网公司 A kind of intelligent substation bay device cluster measure and control device
CN109347070A (en) * 2018-09-30 2019-02-15 成都交大许继电气有限责任公司 A kind of state monitoring and protection system suitable for high-speed railway Traction networks

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Application publication date: 20130327