CN104319744B - Substation system based on protective intelligent center system - Google Patents
Substation system based on protective intelligent center system Download PDFInfo
- Publication number
- CN104319744B CN104319744B CN201410539838.8A CN201410539838A CN104319744B CN 104319744 B CN104319744 B CN 104319744B CN 201410539838 A CN201410539838 A CN 201410539838A CN 104319744 B CN104319744 B CN 104319744B
- Authority
- CN
- China
- Prior art keywords
- substation
- transformer substation
- protection
- information
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 title abstract 7
- 238000004891 communication Methods 0.000 claims abstract description 43
- 239000013307 optical fiber Substances 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims description 20
- 238000004458 analytical method Methods 0.000 claims description 5
- 241000272814 Anser sp. Species 0.000 claims 2
- 102100027253 Envoplakin Human genes 0.000 claims 1
- 101001057146 Homo sapiens Envoplakin Proteins 0.000 claims 1
- 230000006855 networking Effects 0.000 abstract description 6
- 238000004364 calculation method Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract 1
- 230000036541 health Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013210 evaluation model Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005182 global health Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- Y04S40/126—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 wireless data transmission
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a substation system based on a protective intelligent center system. The substation system is capable of realizing efficiency communication within each substation, between substations and between a protective intelligent center and each substation by use of three networking modes, namely a wireless local area network, a wide area communication network and an optical fiber communication network, and by virtue of the respective advantages of the three networking modes; meanwhile, the protective intelligent center system enables the acquisition processing module of the protective intelligent center system to acquire the operating data of each substation in the substation system in real time by virtue of optical fiber communication, and realizes analytical calculation on the acquired data by use of a communication module, a fault position judgment module and a tripping decision module of the protective intelligent center system, and finally, the protective intelligent center system serves as a backup protection system for an out-of-order substation instead of the protection function of the out-of-order substation after the substation area protection of the substation quits for inspection; as a result, the reliability of a load-center substation system is greatly improved.
Description
Technical Field
The invention belongs to the technical field of relay protection of power systems, and particularly relates to a substation system based on a protection intelligent center system.
Background
Currently, relay protection technology presents two development routes with different forms. One is the deep integration of the primary and secondary devices, and the integrated development is carried out towards the primary and secondary devices, and finally the primary intelligent device is formed; and the other method is to perform fusion among intervals by virtue of the advantages of a basic platform of the intelligent substation to form centralized substation area protection of the substation. At present, the intelligent transformer substation technology is greatly promoted in national and south networks, a plurality of domestic protection manufacturers, including Nanrui relay protection, Square protection, admission protection and the like, have actual products and engineering operation, and the mode of primary and secondary equipment separation and centralized station domain protection is more active in academic circles and industrial circles.
In the development of the power grid body, no matter in the western region with intensive resources or in the eastern region with intensive loads, a junction substation group capable of directly determining the stability of a regional power grid or even the stability of a large power grid is formed at present. These hub substation groups face the problems of reduced protection reliability after high concentration of secondary systems and slow recovery of secondary systems after catastrophe. That is, if the protection of each station adopts station domain centralized protection, the dual configuration is still adopted according to the current regulations, and when the single set of protection is stopped due to overhaul or other accidents, all the protection in the station loses dual. This is in contrast to current protection configurations where only a certain interval of protection is out of dualization. In this case, the reliability of the substation protection system will be significantly reduced. If the triple configuration is adopted, the protection complexity is greatly improved, high requirements on operation and maintenance are put forward, and the economy is poor. In addition, even if the triple circuit is adopted, the reliability of protection cannot be obviously improved due to the existence of common links such as a direct current power supply, a secondary circuit and the like. At the same time, the reconstruction of the catastrophe primary device is relatively simple. However, the secondary reconstruction of protection is complicated in installation and debugging and long in construction period, which becomes a bottleneck problem restricting the recovery of power supply. Because the main control room of the transformer substation is generally positioned on the earth surface, when a very large disaster is encountered, the secondary system is also destroyed at the same time, and the power grid restoration needs the simultaneous reconstruction of the primary and secondary systems. Therefore, the protection research of the hub substation group faces new requirements: in response to the special protection problem in the critical area, reasonable reinforcement of the protection system in the critical area should be studied intensively to ensure correct response of the protection system in the complex and changeable operation environment of the system, including under the power grid catastrophic condition.
In summary, it is necessary to provide a new technology capable of strongly ensuring the reliability of a secondary system for a station-area centralized protection system, especially for a group of hub substation stations with a high influence on the safe and stable operation of a regional power grid.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a transformer substation system based on a protection intelligent center system, which combines three networking modes of a wireless local area network, a wide area communication network and an optical fiber communication network to realize efficient communication inside each transformer substation, among the transformer substations and between the protection intelligent center and each transformer substation, and simultaneously, the reliability of the hub transformer substation system is greatly improved by using the protection intelligent center system.
In order to achieve the purpose, the invention provides a transformer substation system based on a protection intelligent center system, which is characterized by comprising the protection intelligent center system and a plurality of transformer substations, wherein the protection intelligent center system is used for providing backup protection for each transformer substation; establishing a VLAN in each transformer substation for information exchange in the transformer substation; a core router of each transformer substation is added into an EVPL-based wide area communication network to realize information exchange of adjacent transformer substations; an optical fiber digital private network based on SDH/PDH is established between the protection intelligent center system and each transformer substation, and data communication is carried out in a connectionless UDP mode.
Preferably, the intelligent protection center system comprises an acquisition processing module, a communication module, a fault position judging module and a tripping decision module; the acquisition processing module is respectively connected with the communication module, the fault position judging module and the trip decision module, and is used for acquiring voltage, current, SMV, GOOSE, breaker state and main protection action information of each transformer substation, transmitting the information and fault direction information of each element in each transformer substation calculated by using the information to the communication module, transmitting the breaker state and main protection action information of each transformer substation to the fault position judging module, and mirroring the breaker state information of each transformer substation to the trip decision module; the communication module is connected with the trip decision module and is used for calculating to obtain sudden information and transmitting the sudden information to the trip decision module by utilizing the voltage, the current, the SMV and the GOOSE of each transformer substation and the fault direction information of each element in each transformer substation; the fault position judging module is connected with the trip decision module and is used for carrying out fault-tolerant analysis by utilizing the breaker state and the main protection action information of each transformer substation, judging the fault position and transmitting the fault position judging result to the trip decision module; and the trip decision module is used for making a trip decision by utilizing the breaker state information, the emergent information and the fault position judgment result of each transformer substation and combining the commissioning state of each transformer substation.
Preferably, the bursty information includes the grid electrical quantity, the state quantity, the switching action and the main protection action information at the time of the fault burst.
Preferably, the trip decision module does not act when the faulty substation is in a commissioning state; and opening the fault line breaker when the faulted substation is in the operation quitting state.
Preferably, the communication module is further configured to share the breaker state and the main protection action information of each substation among the substations.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: the invention establishes a transformer substation system based on a protection intelligent center system, and the transformer substation system realizes high-efficiency communication inside each transformer substation, among each transformer substation and between the protection intelligent center and each transformer substation by combining three networking modes of a wireless local area network, a wide area communication network and an optical fiber communication network and utilizing respective advantages of the transformer substation system; meanwhile, the intelligent protection center system realizes real-time acquisition of the operation data of each transformer substation in the transformer substation system by the acquisition and processing module through optical fiber communication, and realizes analysis and calculation of the acquired data through the communication module, the fault position judging module and the trip decision module, and finally realizes the protection function of replacing the fault transformer substation by taking the intelligent protection center system as a backup protection system of the fault transformer substation after the substation area protection of the transformer substation is withdrawn from maintenance, so that the reliability of the hub transformer substation system is greatly improved.
Drawings
Fig. 1 is a schematic diagram of a communication networking structure of a substation system based on a protection intelligent center system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a configuration for protecting a smart hub system;
FIG. 3 is a schematic diagram of an example installation location of a protection smart center system in a substation system;
fig. 4 is a flowchart of a hot and cold standby mode selection method for protecting a smart hub system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the communication networking of the substation system based on the intelligent center protection system according to the embodiment of the present invention adopts a combination of a wireless local area network, a wide area communication network, and an optical fiber communication network. A Virtual Local Area Network (VLAN) is established inside each substation for information exchange inside the substation, and a core router of each substation is added to a wide Area communication Network based on an Ethernet Virtual Private Line (EVPL) to realize information exchange of adjacent substations. The wan refers to a network in which a Multi-service transfer Platform (MSTP) device corresponds to a plurality of Virtual channels (VCTrunk). An optical fiber Digital private network based on a Synchronous Digital Hierarchy/Plesiochronous Digital Hierarchy (SDH/PDH) is established between the protection intelligent center system and each transformer substation, and data communication is carried out in a User Datagram Protocol (UDP) mode without connection. And the protection intelligent center system is used for providing backup protection for each transformer substation.
As shown in fig. 2, the intelligent protection center system includes an acquisition processing module, a communication module, a fault location determination module, and a trip decision module, where the acquisition processing module is connected to the communication module, the fault location determination module, and the trip decision module is further connected to the communication module and the fault location determination module, respectively.
The acquisition processing module is used for acquiring voltage, current, sampling values (SMV), General Object Oriented Substation Events (GOOSE), breaker states and main protection action information of each transformer substation, and transmitting the information and fault direction information of each element in each transformer substation, which is obtained by calculation by using the information, to the communication module; the acquisition processing module is also used for transmitting the breaker state and the main protection action information of each transformer substation to the fault position judging module; the acquisition processing module is also used for mirroring the breaker state information of each transformer substation to the trip decision module.
The communication module is used for calculating to obtain sudden information by utilizing the voltage, the current, the SMV and the GOOSE of each transformer substation and the fault direction information of each element in each transformer substation and transmitting the sudden information to the trip decision module. The sudden information includes information such as a grid electrical quantity, a state quantity, a switching operation, a main protection operation, and the like during a fault burst. The communication module is also used for sharing the breaker state and the main protection action information of each transformer substation among the transformer substations.
And the fault position judging module is used for carrying out fault-tolerant analysis by utilizing the breaker state and the main protection action information of each transformer substation, judging the fault position and transmitting the fault position judging result to the trip decision module.
And the trip decision module is used for making a trip decision by utilizing the breaker state information, the emergent information and the fault position judgment result of each transformer substation and combining the operation state of each transformer substation. Specifically, when a transformer substation with a fault is in a commissioning state, the trip decision module does not act; and when the transformer substation with the fault exits the running state, the tripping decision module disconnects the fault circuit breaker.
The installation position of the protection intelligent center system in the transformer substation system meets the following three conditions: (A) the optical fiber laying method is close to the geographical center point of the substation group and the optical fiber junction point contacting each substation, and facilitates building of optical fiber laying among the substations. (B) Frequent geological disasters such as collapse, landslide, debris flow, ground collapse and ground cracks do not exist, so that the intelligent center system is protected to have sufficient disaster resistance and recovery capability. (C) The existing power transmission line network structure is fully utilized to save resources. When the network structure is more special, the protection intelligent center system can also be installed near a certain transformer substation.
As shown in fig. 3, taking zheng-state substation group of the henan power grid as an example, wherein zheng, luoshan and ferry are 500kV substations, and the rest substations are 220kV substations, a power grid geographical wiring diagram as shown in fig. 2 is constructed according to a direct mutual power transmission network of each substation. Firstly, a new architecture protection intelligent center system is used as a centralized backup hub of a secondary system of a neighboring hub transformer substation, the existing network structure is fully considered in the geographical position planning of the new architecture protection intelligent center system as shown in fig. 2, the existing zheng, high mountain and official 500kV transformer substations need to be accessed into a gas power station in the future, the transformer substation cluster is the largest load center and the power exchange transmission center of the Henan province and the whole province, the system capacity accounts for more than 20% of the total capacity of the whole province, and the system occupies an important position in the power grid of the Huazhong region, so that the site selection of a protection emergency center needs to be close to the geographical neutral point of the transformer substation cluster as much as possible, and the optical fiber laying of each substation and the communication connection between the protection emergency center and each station are. Secondly, considering that main geological disasters in Zhengzhou areas include collapse, landslide, debris flow, ground subsidence and ground cracks, in order to keep the emergency center independent and sufficient disaster resistance, the site is located in a geological flat area as shown in the area shown in fig. 2 and is constructed in an underground shelter with a first-class earthquake resistance grade (see' earthquake resistance design code of underground buildings specifically), and in order to ensure that the emergency center has sufficient disaster resistance and rapid recovery capability when the disasters come. And finally, the existing power transmission line network structure is fully utilized, and the optical fiber is built on the basis of the power transmission line so as to save resources.
As a backup protection center of a substation group, the protection intelligent center system can work in a cold standby mode and a hot standby mode. Protecting the cold standby of the intelligent center system means: the intelligent protection center system does not perform mirror backup on the station domain protection of any transformer substation, the operation data of all the transformer substations are only acquired and processed once, backup protection can be provided for only one transformer substation at the same time, and the intelligent protection center system automatically replaces the station domain protection function of the transformer substation when the station domain protection of one transformer substation is removed from maintenance; the trip mode of the intelligent center system under the cold standby mode can only adopt a network trip mode. Protecting hot standby of the smart hub system means: the intelligent protection center system performs mirror backup on the substation area protection of each concerned substation, collects and processes the operation data of all the substations in real time, can provide backup protection for a plurality of substations at the same time, and automatically replaces the substation area protection function of a fault substation when the substation area protection of one or more substations is out of maintenance; the trip mode of the protection intelligent center system in the hot standby mode can adopt a direct trip mode or a network trip mode.
As shown in fig. 4, the method for selecting the hot standby mode and the cold standby mode of the protection smart center system includes the following steps:
(1) calculating fault probability distribution sample space D of each transformer substation according to historical operation data of each transformer substation1,D2,…,DNAnd N is the total number of the substations in the substation system. Further comprising the steps of:
(1-1) order the failure probability of each substation to allocate a sample space D1,D2,…,DNAll comprise the following elements: the method comprises the following steps of adding elements and combinations thereof serving as samples into fault probability distribution sample space D of each transformer substation according to fault probability a of instrument mutual inductor, ground fault probability b of direct current system, fault probability c of lightning arrester, fault probability D of bus, fault probability e of capacitor, fault probability f of breaker and overhaul state g of transformer substation1,D2,…,DNWherein the failure probability of each substation allocates a sample space D1,D2,…,DNThe composition and arrangement order of the samples are the same.
For example, the failure probability at each substation assigns a sample space D1,D2,…,DNWhen the elements in the transformer substation all comprise fault probability a of instrument mutual inductor, direct current system ground fault probability b and arrester fault probability c, distributing sample space D to the fault probability of each transformer substation1,D2,…,DNAll included the following samples: a. b, c, ab, ac, bc, and abc.
(1-2) calculating a failure probability distribution sample space D of the ith substation by the following formulaiJ-th sample S in (i ═ 1,2, …, N)jThe corresponding sample value:
wherein, YiTotal number of faults in ith substation history data, ∑ XkFor the jth sample SjThe elements contained in the method act on the sum of the times of substation faults caused by the substation independently, j is 1,2, …, M and M are sample space D allocated for fault probabilityiTotal number of samples in (1).
(2) Sample space D is allocated according to fault probability of each substation1,D2,…,DNAnd calculating to obtain a health state evaluation model D' of the equivalent transformer substation system.
Sample value P ' corresponding to jth sample in health state evaluation model D ' of equivalent substation system 'jCalculated by the following formula:
wherein,phi denotes the empty set, ∩ denotes the AND operation, ∩ denotes the multiply operation.
Therefore, a health state evaluation model D' of the equivalent substation system after information of each substation is fused is obtained, and the global health state of the substation group is comprehensively reflected.
(3) Summing all sample values in the health state evaluation model D' of the equivalent transformer substation system to obtain the health state of the equivalent transformer substation system, wherein the health state reflects the probability of regional faults of each transformer substation as an equivalent whole.
(4) According to the health state of the equivalent transformer substation system, the economic loss data corresponding to regional faults of each transformer substation in history are combined, the economic loss of the transformer substation system caused by the faults is predicted, the prediction result is compared with the cold and hot standby switching cost, and a cold and hot standby selection decision for protecting the intelligent center system is obtained. Specifically, when the former is larger than the latter, the protection smart center system adopts a hot standby mode, and conversely, the protection smart center system adopts a cold standby mode.
The working principle of the protection intelligent center system is as follows:
the method comprises the steps of installing the intelligent protection center system at a selected position, collecting historical operation data (fault probability of instrument transformers, grounding fault probability of a direct current system, fault probability of lightning arresters, fault probability of buses, fault probability of capacitors, fault probability of circuit breakers and overhaul states of a transformer substation) of surrounding transformer substations, carrying out modeling calculation on the transformer substation system, making a cold and hot standby mode selection decision for protecting the intelligent protection center system, and then, not changing the standby mode. Taking a hot standby mode as an example, the protection intelligent center system establishes information connection with surrounding transformer substations through optical fibers, collects voltage, current, SMV, GOOSE, breaker state and main protection action information of the transformer substations in real time through the acquisition and processing module, transmits the information and fault direction information of each element in each transformer substation calculated by using the information to the communication module, simultaneously transmits the breaker state and the main protection action information of each transformer substation to the fault position judging module through the acquisition and processing module, and mirrors the breaker state information of each transformer substation to the trip decision module; the communication module calculates and obtains sudden information and transmits the sudden information to the trip decision module by utilizing the voltage, the current, the SMV and the GOOSE of each transformer substation and the fault direction information of each element in each transformer substation, and meanwhile, the communication module shares the breaker state and the main protection action information of each transformer substation among the transformer substations; the fault position judging module performs fault-tolerant analysis by using the breaker state and the main protection action information of each transformer substation, judges the fault position and transmits the judgment result to the trip decision module; and the trip decision module makes a trip decision by combining the commissioning state of each transformer substation according to the breaker state information, the emergent information and the fault position judgment result of each transformer substation.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A transformer substation system based on a protection intelligent center system is characterized by comprising the protection intelligent center system and a plurality of transformer substations, wherein the protection intelligent center system is used for providing backup protection for each transformer substation; establishing a VLAN in each transformer substation for information exchange in the transformer substation; a core router of each transformer substation is added into an EVPL-based wide area communication network to realize information exchange of adjacent transformer substations; an SDH/PDH-based optical fiber digital private network is established between the protection intelligent central system and each transformer substation, and data communication is carried out in a connectionless UDP (user Datagram protocol)/PDH (digital subscriber hierarchy) mode; the intelligent protection center system comprises an acquisition processing module, a communication module, a fault position judging module and a tripping decision module;
the acquisition processing module is respectively connected with the communication module, the fault position judging module and the trip decision module, and is used for acquiring voltage, current, SMV, GOOSE, breaker state and main protection action information of each transformer substation, transmitting the information and fault direction information of each element in each transformer substation calculated by using the information to the communication module, transmitting the breaker state and main protection action information of each transformer substation to the fault position judging module, and mirroring the breaker state information of each transformer substation to the trip decision module;
the communication module is connected with the trip decision module and is used for calculating to obtain sudden information and transmitting the sudden information to the trip decision module by utilizing the voltage, the current, the SMV and the GOOSE of each transformer substation and the fault direction information of each element in each transformer substation;
the fault position judging module is connected with the trip decision module and is used for carrying out fault-tolerant analysis by utilizing the breaker state and the main protection action information of each transformer substation, judging the fault position and transmitting the fault position judging result to the trip decision module;
and the trip decision module is used for making a trip decision by utilizing the breaker state information, the emergent information and the fault position judgment result of each transformer substation and combining the commissioning state of each transformer substation.
2. The substation system based on a protection smart center system according to claim 1, wherein the bursty information comprises grid electrical quantities, state quantities, switching actions and primary protection action information at the time of a fault burst.
3. The protection smart center system based substation system of claim 1 or 2, wherein the trip decision module is not active when the failed substation is in commissioning; and opening the fault line breaker when the faulted substation is in the operation quitting state.
4. The substation system based on the protection intelligent center system according to claim 3, wherein the communication module is further configured to share the breaker state and the main protection action information of each substation among the substations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410539838.8A CN104319744B (en) | 2014-10-13 | 2014-10-13 | Substation system based on protective intelligent center system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410539838.8A CN104319744B (en) | 2014-10-13 | 2014-10-13 | Substation system based on protective intelligent center system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104319744A CN104319744A (en) | 2015-01-28 |
CN104319744B true CN104319744B (en) | 2017-02-15 |
Family
ID=52374943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410539838.8A Expired - Fee Related CN104319744B (en) | 2014-10-13 | 2014-10-13 | Substation system based on protective intelligent center system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104319744B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101872964A (en) * | 2010-07-02 | 2010-10-27 | 华北电力大学 | Wide area measurement system based back-up protection method of multi-terminal high-voltage power transmission area |
CN103151842A (en) * | 2013-03-18 | 2013-06-12 | 国家电网公司 | Hierarchical protection control system facing regional power grid |
CN104078946A (en) * | 2013-10-30 | 2014-10-01 | 中国南方电网有限责任公司 | Wide-area distance protecting method for transformer substations |
CN104269935A (en) * | 2014-10-23 | 2015-01-07 | 南京国电南自轨道交通工程有限公司 | Novel interval layer net networking method for subway pressing ring net protecting system |
-
2014
- 2014-10-13 CN CN201410539838.8A patent/CN104319744B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101872964A (en) * | 2010-07-02 | 2010-10-27 | 华北电力大学 | Wide area measurement system based back-up protection method of multi-terminal high-voltage power transmission area |
CN103151842A (en) * | 2013-03-18 | 2013-06-12 | 国家电网公司 | Hierarchical protection control system facing regional power grid |
CN104078946A (en) * | 2013-10-30 | 2014-10-01 | 中国南方电网有限责任公司 | Wide-area distance protecting method for transformer substations |
CN104269935A (en) * | 2014-10-23 | 2015-01-07 | 南京国电南自轨道交通工程有限公司 | Novel interval layer net networking method for subway pressing ring net protecting system |
Also Published As
Publication number | Publication date |
---|---|
CN104319744A (en) | 2015-01-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Ghosh et al. | Communication feasibility analysis for smart grid with phasor measurement units | |
Suslov et al. | Flexible Power Distribution Networks: New Opportunities and Applications. | |
CN103107603B (en) | Region intelligent protection system of transformer substation | |
CN106249073A (en) | Distribution network failure based on LoRa communication technology instruction system | |
CN103093276B (en) | Urban power grid risk assessment method | |
CN110826895B (en) | Platform area topology identification method | |
CN105306328B (en) | A kind of secondary equipment of intelligent converting station looped network distributed structure/architecture method and system | |
CN105977923B (en) | A kind of substation relay protection apparatus and system for realizing plug and play | |
Wang et al. | Integrated wide area protection and control for power grid security | |
CN102118061A (en) | Method and system for centralized control of regional power grid | |
CN104537206A (en) | PSR model based grid infrastructure vulnerability evaluation method | |
Cirio et al. | Wide area monitoring in the Italian power system: architecture, functions and experiences | |
CN204497849U (en) | A kind ofly take into account measure and control device that is centralized, formula feeder automation on the spot | |
CN202978439U (en) | Process level networking structure applicable to centralized station domain protection communication of intelligent substations | |
CN109494873A (en) | A kind of control guard method of AC-DC hybrid power grid, apparatus and system | |
CN207117310U (en) | A kind of intelligent traction substation framework | |
He et al. | Distributed protection for smart substations based on multiple overlapping units | |
CN204089191U (en) | Power distribution network multiple target is collaborative from the major clique system that becomes | |
CN106908694B (en) | A kind of distribution line failure indicator and its detection method based on IEC61850 | |
CN104319744B (en) | Substation system based on protective intelligent center system | |
CN104300680B (en) | Towards protection intelligent centre system and the cold and hot standby mode system of selection thereof of transformer station | |
Kounev et al. | On smart grid communications reliability | |
Noske et al. | UPGRID project: The management and control of LV network | |
CN206515421U (en) | Monitoring system based on distributed single-phase earth fault monitoring terminal | |
CN109726482A (en) | A kind of construction method and relevant apparatus of high load capacity density power grid |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20171013 |