CN102522815A - Automatic switching method of intelligent inter-station remote backup power supply - Google Patents
Automatic switching method of intelligent inter-station remote backup power supply Download PDFInfo
- Publication number
- CN102522815A CN102522815A CN2012100036108A CN201210003610A CN102522815A CN 102522815 A CN102522815 A CN 102522815A CN 2012100036108 A CN2012100036108 A CN 2012100036108A CN 201210003610 A CN201210003610 A CN 201210003610A CN 102522815 A CN102522815 A CN 102522815A
- Authority
- CN
- China
- Prior art keywords
- power supply
- station
- power grid
- automatic switching
- transformer substation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to an automatic switching method of an intelligent inter-station remote backup power supply, which comprises the following steps that: a transformer substation is selected; the power grid of the transformer substation only has a circuit of direct main power supply; another indirect power supply of the power grid is in a heat standby state because the operation method of the power grid is required to be set into a ring breakage point of an electromagnetic ring network, and the ring breakage point is arranged in a to-end transformer substation; and a standby power supply automatic switching function is integrated in an automatic control system of a regional power grid centralized control station, information related to voltage, current and the state quantity of a circuit breaker is acquired from a partition layer network of a remote intelligent transformer substation which meets a DL_T_860 communication protocol, and an inter-station communication channel and an optical fiber channel for realizing the functions of a centralized control station are shared. The automatic switching method of the intelligent inter-station remote backup power supply has the beneficial effects that: when a power system cannot realize the automatic switching function of the standby power supply in the transformer substation in a region with a weak power grid architecture, the inter-station remote standby power supply automatic switching function is realized by remote communication, so that the power supply reliability of the transformer substation in the region with the weak power grid architecture is improved and power grid accidents are prevented from happening.
Description
Technical field
The present invention relates to intelligent grid, distant place automatic closing method between a kind of intelligent station of electric power system automation field.
Background technology
At present; In field of power; Because the restriction of factors such as regional economy development and landform, the main power supply that also has quite a few transformer station (comprising 220kV electric pressure transformer station) is the situation that belongs to power supply of single line serial connection or the power supply of same power supply double loop parallel lines on same tower, in case main power supply disappears; Little power supply capacity such as the small power station that our station articulates far away not as good as supply load, will face the danger of all load loss again.According to the division to the power grid accident grade, the above electrical network of network load 150MW subtracts the confession load and promptly constitutes than major break down more than 60%.Therefore, at above-mentioned electrical network weakness zone,, often cause big power grid accident because the main power supply that the single line supply line permanent fault that various natures or human factor cause, double loop same position cross-line permanent fault etc. cause disappears.Simultaneously; Development along with Fibre Optical Communication Technology; The proposition of intelligent grid notion, between standing distant place real time information obtain and send very reliably, the application of optical-fiber longitudinal difference protection has been strong proof; Thereby, be feasible through automatic closing function between the station, a distant place of Fibre Optical Communication Technology realization.Through the realization of this function, can avoid above-mentioned electrical network weakness zone to subtract and supply a large amount of loads to cause than major break down.
Summary of the invention
The object of the invention subtracts the generation that supplies the load power grid accident and has proposed a kind of automatic closing method novel, that be suitable for for fear of above-mentioned electrical network weakness zone just.
The objective of the invention is to realize through following technical scheme.
Distant place automatic closing method between a kind of intelligent station; Characteristic of the present invention is; Select to have only one road direct main power supply in the electrical network; The indirect power supply in another road is owing to power system operating mode requires to be set to the transformer station that electromagnetic looped network abscission ring point is in hot stand-by duty, and the abscission ring point is positioned at opposite end transformer station; With realizing that the automatic closing function is integrated in the automatic control system of area power grid concentrator station; Associated voltage, electric current, circuit-breaker status amount information are all obtained from the intelligent transformer station in a distant place satisfies the wall network of DL_T_860 communication protocol, and the communication port between the station is shared with the optical-fibre channel that realizes the concentrator station function.
Use this method and realize automatic closing, thereby strengthen the power supply reliability of this type electrical network framework weakness zone this type transformer station.
The basic mode of distant place automatic closing has two kinds between the intelligent station of the present invention, is respectively that interconnection is hauled oneself willingly into bus section breaker and hauled oneself willingly into.
Function of the present invention is not limited to single place; But act on regional power grid all weak tie points of two-way power supply power supply are arranged; Simultaneously in the communication network supporting down, shared abundant information makes quantity, the position that the user can select, adjust area power grid automatic closing point flexibly according to electrical network operational mode at that time.
The inventive method is by the optical fiber communication passage; Fiber optic interface unit (sharing) with the concentrator station communication port; Information collecting device (utilizing intelligent transformer station wall network to have information) on the spot; A formula distant place, the territory prepared auto restart function of standing (being integrated in area power grid concentrator station automatic control system) etc. connects and composes the complete automatic closing system of a cover, quantity, position that the user can select, adjust area power grid automatic closing point flexibly according to electrical network operational mode at that time.
The invention has the beneficial effects as follows; Adopt the present invention; Under the situation of electric power system automatic closing function in the transformer station in the weak area of electrical network framework can not realize standing, utilize distant place communication, realize distant place automatic closing function between the station; Thereby improve the power supply reliability of the weak regional transformer station of electrical network framework, avoid the generation of power grid accident.
Below knot and accompanying drawing and embodiment further set forth content of the present invention.
Description of drawings
The electric network composition sketch map that Fig. 1 is suitable for for the present invention;
Fig. 2 hauls oneself willingly into sketch map for interconnection of the present invention;
Fig. 3 hauls oneself willingly into sketch map for bus section breaker of the present invention;
Fig. 4 is the present invention's connection sketch map of communicating by letter.
Embodiment
Distant place automatic closing method between a kind of intelligent station; Characteristic of the present invention is; Select to have only one road direct main power supply in the electrical network; The indirect power supply in another road is owing to power system operating mode requires to be set to the transformer station that electromagnetic looped network abscission ring point is in hot stand-by duty, and the abscission ring point is positioned at opposite end transformer station; With realizing that the automatic closing function is integrated in the automatic control system of area power grid concentrator station; Associated voltage, electric current, circuit-breaker status amount information are all obtained from the intelligent transformer station in a distant place satisfies the wall network of DL_T_860 communication protocol, and the communication port between the station is shared with the optical-fibre channel that realizes the concentrator station function.
Use this method and realize automatic closing, thereby strengthen the power supply reliability of this type electrical network framework weakness zone this type transformer station.
The basic mode of distant place automatic closing has two kinds between the intelligent station of the present invention, is respectively that interconnection is hauled oneself willingly into bus section breaker and hauled oneself willingly into.
Function of the present invention is not limited to single place; But act on regional power grid all weak tie points of two-way power supply power supply are arranged; Simultaneously in the communication network supporting down, shared abundant information makes quantity, the position that the user can select, adjust area power grid automatic closing point flexibly according to electrical network operational mode at that time.
The scope of application of the present invention
The scope of application of the present invention is the transformer station that the electric network composition form of transformer station's first among similar Fig. 1 or transformer station's second is arranged in the weak zone of electrical network framework; They have only one the tunnel from the direct-furnish power supply that major network comes; Do not have direct stand-by power supply, get in touch a little less than indirect but can form through next stage transformer station and major network.
The basic mode of automatic closing of the present invention
There is the two-way power supply in transformer station third, and a routing variable power station first is sent here through first and third 's interconnection, and another routing variable power station second is sent here through second and third 's interconnection.Automatic closing generally has dual mode, is respectively that interconnection is hauled oneself willingly into bus section breaker and hauled oneself willingly into.How the explanation dual mode moves below, and the transformer station that loses power supply is connected on the stand-by power supply.
1, interconnection is hauled oneself willingly into
During normal operation, form electromagnetic looped network for fear of electrical network, the power supply of transformer station third is supplied by the second third interconnection master, and first third interconnection is in stand-by heat, and circuit breaker 3DL is at open position, belongs to the abscission ring point (among Fig. 2 shown in the symbol " * ") of electromagnetic looped network.When transformer station's first and the interface disconnection of major network system, transformer station's first will lose power supply.If fault-free in transformer station's first zone at this moment; The prepared auto restart function detects the busbar voltage disappearance of transformer station's first again between standing; After this prepared auto restart logic will through the time delay affirmation 1DL tripping of adjusting; The 3DL that closes delivers to transformer station's first with the power supply that transformer station's second supplies to come, and has guaranteed the power supply reliability of transformer station's first.
The situation of transformer station's second and transformer station's first be symmetry fully, no longer repeats here.
2, bus section breaker is hauled oneself willingly into
Form electromagnetic looped network for fear of electrical network, another kind of operational mode is that the abscission ring point is placed on 4DL place (among Fig. 3 shown in the symbol " * ").If any loses transformer station's first or second and the connecting of major network; Power supply be about to disappear, and fault-free again in standing is same; Prepared auto restart detects the busbar voltage disappearance of distant place transformer station first or second between standing; Behind the time delay affirmation 1DL or 7DL tripping that adjust, the 4DL that closes delivers to distant place transformer station with stand-by power supply.
The design of automatic closing function of the present invention realizes
1, installation site
The present invention can realize with an independent device by traditional form, is installed on the transformer station at electromagnetic looped network abscission ring point place; When communication port bandwidth, propagation delay time, reliability etc. meet the demands, also can be used as the automatic control system that a function is integrated in concentrator station.Along with the intelligentized development of electrical network, electric network protection information no longer is confined to the interior utilization of standing, and the latter's application prospect is more wide, and the means of realization are also more flexible.Can in all electrical network scopes that concentrator station is had jurisdiction over, realize the prepared auto restart function, even expand to the whole distract electrical network.Characteristic based on the intelligent grid information sharing; Relevant substation bus bar voltage; Circuit breaker current; Signals such as circuit breaker position, circuit breaker health status can easily obtain through network, and the prepared auto restart function then realizes through the mechanism of the GOOSE in the network the control of relative breaker, and area power grid has several automatic closing points, act on those several circuit breakers then can be adjusted by user flexibility according to electrical network operational mode at that time.
2, I/O information
In order to realize the prepared auto restart function, each automatic closing point need have basic input, output information as shown in the table:
Table 1 I/O information table
3, communication structure
Communication structure of the present invention is by shown in Figure 4: the territory formula prepared auto restart function of standing is integrated in the automatic control system of area power grid concentrator station; Transformer station through remote fiber interface arrangement and prepared auto restart function realizes writing to each other; Fig. 4 pecked line is a remote fibre channel, if distance between sites is short, then can adopt the mode of direct connection; Distance then adopts the form of SDH optical transceiver switching, and these remote fibre channels to be concentrator stations be realizes that collection control function installs.Communication in each transformer station adopts the SMV sampled value message and the GOOSE mechanism that meet the DL_T_860 standard to realize; All communication informations have all realized networking; The line dotted line is the communication network winding thread in the transformer station among Fig. 4; Medium is an optical fiber, and the information acquisition system in standing also is to have shared the wall network of intelligent transformer station for realizing that the protection controlled function disposes.
Above-described embodiment of the present invention only is the explanation to preferred forms of the present invention, does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (1)
1. distant place automatic closing method between an intellectuality is stood; It is characterized in that; Select to have only one road direct main power supply in the electrical network; The indirect power supply in another road is owing to power system operating mode requires to be set to the transformer station that electromagnetic looped network abscission ring point is in hot stand-by duty, and the abscission ring point is positioned at opposite end transformer station; With realizing that the automatic closing function is integrated in the automatic control system of area power grid concentrator station; Associated voltage, electric current, circuit-breaker status amount information are all obtained from the intelligent transformer station in a distant place satisfies the wall network of DL_T_860 communication protocol, and the communication port between the station is shared with the optical-fibre channel that realizes the concentrator station function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100036108A CN102522815A (en) | 2012-01-09 | 2012-01-09 | Automatic switching method of intelligent inter-station remote backup power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100036108A CN102522815A (en) | 2012-01-09 | 2012-01-09 | Automatic switching method of intelligent inter-station remote backup power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102522815A true CN102522815A (en) | 2012-06-27 |
Family
ID=46293637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100036108A Pending CN102522815A (en) | 2012-01-09 | 2012-01-09 | Automatic switching method of intelligent inter-station remote backup power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102522815A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107592A (en) * | 2013-01-25 | 2013-05-15 | 江苏省电力公司海门市供电公司 | Automatic switching control method for standby power source with small power source grid-connected system |
| CN103187795A (en) * | 2013-01-18 | 2013-07-03 | 云南电网公司大理供电局 | Automatic switching method of remote standby power supply |
| CN104300680A (en) * | 2014-10-13 | 2015-01-21 | 华中科技大学 | Protecting intelligent central system orienting transformer substations and cold and hot standby mode selection method thereof |
| CN104333125A (en) * | 2014-11-26 | 2015-02-04 | 国网宁夏电力公司固原供电公司 | Long-distance automatic stand-by power switching device |
| CN105244992A (en) * | 2015-09-01 | 2016-01-13 | 云南电网有限责任公司大理供电局 | Remote backup power supply automatic switching method and system |
| CN106100139A (en) * | 2016-08-19 | 2016-11-09 | 国网浙江省电力公司 | A kind of prepared auto restart and cutting load coordinated control system and inter-linked controlling method |
| CN106385011A (en) * | 2016-09-26 | 2017-02-08 | 中国电力工程顾问集团中南电力设计院有限公司 | Fault range identification device and identification method for intelligent regional spare power automatic switching system |
| CN104682545B (en) * | 2014-12-01 | 2017-04-19 | 国家电网公司 | Automatic backup power supply changeover device and changeover method thereof |
| CN108879556A (en) * | 2018-08-31 | 2018-11-23 | 邹平县供电公司 | A kind of Xia Hu cable mechanism and Xia Hu cable mechanism construction method |
| CN108899856A (en) * | 2018-08-31 | 2018-11-27 | 邹平县供电公司 | A kind of power distribution station joint power supply mechanism |
| CN109113413A (en) * | 2018-08-31 | 2019-01-01 | 邹平县供电公司 | A kind of more electric pole compound formulations and mechanism with inclination monitoring |
| CN113488969A (en) * | 2021-06-23 | 2021-10-08 | 深圳供电局有限公司 | Intelligent protection device for power transmission line |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364746A (en) * | 2008-09-12 | 2009-02-11 | 云南电网公司曲靖供电局 | Self-adaptive standby power source self-throwing scheme for transforming plant lead-in circuit breaker |
| CN201215898Y (en) * | 2008-06-27 | 2009-04-01 | 南京南瑞继保电气有限公司 | Backup auto-activating device having remote auto-activating function |
| CN101459350A (en) * | 2008-05-19 | 2009-06-17 | 河南省电力公司 | GOOSE mode network standby dispensing method based on digital transmission network |
| CN101752897A (en) * | 2008-12-15 | 2010-06-23 | 河南省电力公司南阳供电公司 | Automatic comprehensive spare switch device based on automatic dispatching platform |
| CN201623529U (en) * | 2009-10-14 | 2010-11-03 | 广东电网公司肇庆供电局 | Automatic switching wide-area control system for wide-area backup power supply of power system |
| CN102072997A (en) * | 2010-11-25 | 2011-05-25 | 河南省电力公司洛阳供电公司 | Spare automatic switching logic test method for checking main transformer mutual switching mode |
-
2012
- 2012-01-09 CN CN2012100036108A patent/CN102522815A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459350A (en) * | 2008-05-19 | 2009-06-17 | 河南省电力公司 | GOOSE mode network standby dispensing method based on digital transmission network |
| CN201215898Y (en) * | 2008-06-27 | 2009-04-01 | 南京南瑞继保电气有限公司 | Backup auto-activating device having remote auto-activating function |
| CN101364746A (en) * | 2008-09-12 | 2009-02-11 | 云南电网公司曲靖供电局 | Self-adaptive standby power source self-throwing scheme for transforming plant lead-in circuit breaker |
| CN101752897A (en) * | 2008-12-15 | 2010-06-23 | 河南省电力公司南阳供电公司 | Automatic comprehensive spare switch device based on automatic dispatching platform |
| CN201623529U (en) * | 2009-10-14 | 2010-11-03 | 广东电网公司肇庆供电局 | Automatic switching wide-area control system for wide-area backup power supply of power system |
| CN102072997A (en) * | 2010-11-25 | 2011-05-25 | 河南省电力公司洛阳供电公司 | Spare automatic switching logic test method for checking main transformer mutual switching mode |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187795A (en) * | 2013-01-18 | 2013-07-03 | 云南电网公司大理供电局 | Automatic switching method of remote standby power supply |
| CN103107592A (en) * | 2013-01-25 | 2013-05-15 | 江苏省电力公司海门市供电公司 | Automatic switching control method for standby power source with small power source grid-connected system |
| CN104300680A (en) * | 2014-10-13 | 2015-01-21 | 华中科技大学 | Protecting intelligent central system orienting transformer substations and cold and hot standby mode selection method thereof |
| CN104300680B (en) * | 2014-10-13 | 2016-04-13 | 华中科技大学 | Towards protection intelligent centre system and the cold and hot standby mode system of selection thereof of transformer station |
| CN104333125A (en) * | 2014-11-26 | 2015-02-04 | 国网宁夏电力公司固原供电公司 | Long-distance automatic stand-by power switching device |
| CN104682545B (en) * | 2014-12-01 | 2017-04-19 | 国家电网公司 | Automatic backup power supply changeover device and changeover method thereof |
| CN105244992A (en) * | 2015-09-01 | 2016-01-13 | 云南电网有限责任公司大理供电局 | Remote backup power supply automatic switching method and system |
| CN106100139A (en) * | 2016-08-19 | 2016-11-09 | 国网浙江省电力公司 | A kind of prepared auto restart and cutting load coordinated control system and inter-linked controlling method |
| CN106385011A (en) * | 2016-09-26 | 2017-02-08 | 中国电力工程顾问集团中南电力设计院有限公司 | Fault range identification device and identification method for intelligent regional spare power automatic switching system |
| CN108879556A (en) * | 2018-08-31 | 2018-11-23 | 邹平县供电公司 | A kind of Xia Hu cable mechanism and Xia Hu cable mechanism construction method |
| CN108899856A (en) * | 2018-08-31 | 2018-11-27 | 邹平县供电公司 | A kind of power distribution station joint power supply mechanism |
| CN109113413A (en) * | 2018-08-31 | 2019-01-01 | 邹平县供电公司 | A kind of more electric pole compound formulations and mechanism with inclination monitoring |
| CN108899856B (en) * | 2018-08-31 | 2020-09-08 | 邹平县供电公司 | Power distribution station combined power supply mechanism |
| CN113488969A (en) * | 2021-06-23 | 2021-10-08 | 深圳供电局有限公司 | Intelligent protection device for power transmission line |
| CN113488969B (en) * | 2021-06-23 | 2024-01-19 | 深圳供电局有限公司 | Intelligent protection device for power transmission line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102522815A (en) | Automatic switching method of intelligent inter-station remote backup power supply | |
| CN103117537B (en) | Power distribution network area protection method and system | |
| CN102856981B (en) | Station-area protection and control device with protection and control functions in converting station | |
| CN202495807U (en) | Remote centralized measurement and control system for power distribution network | |
| CN105977923B (en) | A kind of substation relay protection apparatus and system for realizing plug and play | |
| CN107332217B (en) | The co-architecture and Synergistic method of the power distribution protection of the device containing flexible interconnection | |
| WO2013041010A1 (en) | Traction power supply system able to realize separation of up/downlink power supply arms to supply power in the manner of at | |
| CN102638097A (en) | Remote concentrated measurement and control system for distribution network | |
| CN105790274A (en) | Power flow control device and control method for run-through power supply system converter type traction substation | |
| CN110932258A (en) | Diamond type distribution network | |
| CN102832600A (en) | Regional failure protection method based on power grid topological structure | |
| CN110086167A (en) | A kind of alternating current-direct current mixed connection power distribution network self-healing control system and control method | |
| CN102545376B (en) | Spare power automatic switching system for 220 KV line faults | |
| CN102208811B (en) | Wiring structure of distribution network containing microgrid | |
| CN104333127A (en) | Power transmission and distribution controlling integrated communication network system based on distributed passive optical network | |
| CN113422354A (en) | Power distribution network protection and self-healing system based on 5G network communication | |
| CN203014357U (en) | GOOSE message/switch value conversion device for relay protection digitized transformation | |
| CN103606908A (en) | A protection system applicable to an electrical network integrated circuit | |
| CN110635562A (en) | Self-adaptive area spare power automatic switching device and self-adaptive area spare power automatic switching method | |
| CN109842204A (en) | Stand-by heat line electricity source based on optical-fibre channel controls in-put of spare power supply method | |
| CN108711863A (en) | Stability control system and load shedding method thereof | |
| CN105655880B (en) | The configuration mode of 110 kilovolts of system busbar voltage load equiblibrium mass distributions of intelligent substation double bus scheme mode | |
| Zheng et al. | Hierarchical protection control system of smart substations | |
| CN203278057U (en) | Intelligent prefabricated transformer substation | |
| CN105119375A (en) | Carrier technology-based inter-substation area tie line backup power automatic switching communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120627 |