CN103078679B - Temporary communication method between transformer substation under construction and built transformer substation or power grid node and microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link - Google Patents

Temporary communication method between transformer substation under construction and built transformer substation or power grid node and microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link Download PDF

Info

Publication number
CN103078679B
CN103078679B CN201310013206.3A CN201310013206A CN103078679B CN 103078679 B CN103078679 B CN 103078679B CN 201310013206 A CN201310013206 A CN 201310013206A CN 103078679 B CN103078679 B CN 103078679B
Authority
CN
China
Prior art keywords
transformer station
opgw
building
optical
optical fiber
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.)
Active
Application number
CN201310013206.3A
Other languages
Chinese (zh)
Other versions
CN103078679A (en
Inventor
吴飞龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Fuzhou Power Supply Co of State Grid Fujian Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Fuzhou Power Supply Co of State Grid Fujian Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Fujian Electric Power Co Ltd, Fuzhou Power Supply Co of State Grid Fujian Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201310013206.3A priority Critical patent/CN103078679B/en
Publication of CN103078679A publication Critical patent/CN103078679A/en
Application granted granted Critical
Publication of CN103078679B publication Critical patent/CN103078679B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/124Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

Abstract

The invention discloses a temporary communication method between a transformer substation under construction and a built transformer substation or a power grid node and a microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link. A microwave relay communication method is temporarily added between the transformer substation under construction and the built transformer substation or the power grid node according to circumstances, so that the microwave relay- OPGW optical fiber communication link is formed. A PGW optical drawing-in 'last kilometer' problem is solved, and the method and the link have the advantages of simplicity, practicability, investment conservation, quickness in construction and the like.

Description

Building between transformer station and built transformer station or grid nodes provisional communication method and micro- Ripple relay-OPGW optic communication links
Technical field
The present invention relates to transformer station and built transformer station or grid nodes are being built in a kind of communication link construction, particularly one kind Between provisional communication method and microwave relay-OPGW optic communication links.
Background technology
For a long time, the engineering time node arrangement that project of transmitting and converting electricity is built, the OPGW optical fiber of communication speciality all can only be Transformer station will go into operation " at the last moment " of 1~2 day before power transmission enter in the transformer station building, lead to communication equipment and its carried The relay protection of secondary specialty, the related service such as dispatching automation the apparatus whole process joint debugging time at full stretch limited, become " seizing by the throat " node for infrastructure project operation power transmission on schedule.
Transmission of electricity now becomes how engineering enters newly-built transformer station, the different electricity of line disconnection construction scissors crossing from original line disconnection Pressure grade circuit is many, the power cut construction time is long, often results in the long-time interruption of OPGW telecommunication optical fiber in operation and communication network is opened Ring, has had a strong impact on communication system of power grids network security, reliability service.Therefore, provisional communication side is often taken in project of transmitting and converting electricity construction Case, meets in the demand building the debugging of substation project secondary device, and maintains communication network operation with closed ring.
Content of the invention
It is an object of the invention in place of overcoming the deficiencies in the prior art, and a kind of alternative temporary erection OPGW light is provided Fine scheme, realizes in the method building provisional communication between transformer station and built transformer station or grid nodes.
The present invention also resides in a kind of microwave relay-OPGW optic communication links of offer.
A kind of in the method building provisional communication between transformer station and built transformer station or grid nodes, step is as follows:(1)Choosing It is taken at and builds transformer station nearby physical features is relatively high, and unobstructed sighting condition is good building between transformer station, has OPGW fiber optic closure Electric power line pole tower or related commanding elevation,(2)There is provided one to jump SDH digital microwave equipment and configure two pieces of UFIU UMSC Fiber Interface Unit, UFIU UMSC Fiber Interface Unit is connected to the two ends of SDH digital microwave equipment,(3)Build transformer station will be micro- for the SDH numeral of one end The UFIU UMSC Fiber Interface Unit of wave device is connected with building transformer station's existing SDH optical transmitter and receiver optical interface, SDH digital microwave equipment antenna and Outdoor unit is then installed on building outside transformer substation eminence,(4)The electric power line pole tower chosen or related commanding elevation are installed Other end SDH digital microwave equipment and UFIU UMSC Fiber Interface Unit, are extracted idle optical fiber and are connected with UFIU UMSC Fiber Interface Unit, realize and building power transformation Radio relay communication communication between standing,(5)It is connected with built OPGW optical fiber by OPGW fiber optic closure, building transformer station and choosing Take the microwave electromagnetic signal between shaft tower or related commanding elevation to be converted to after optical signal through UFIU UMSC Fiber Interface Unit, be sent to built power transformation Stand or grid nodes, realize in the communication building transformer station and built transformer station or grid nodes.
The present invention in provisional communication method between transformer station and built transformer station or grid nodes of building, by building power transformation Stand to build choose near transformer station to possess setting on the electric power line pole tower of fiber optic closure or related commanding elevation digital micro- Ripple relay equipment and UFIU UMSC Fiber Interface Unit, optical signal is sent to microwave equipment by UFIU UMSC Fiber Interface Unit, carries out sending out by microwave equipment Send and receive, then by the optical electrical signal conversion of UFIU UMSC Fiber Interface Unit, realize building transformer station and built transformer station or grid nodes Provisional communication to realize joint debugging.
The mode extracting idle optical fiber from OPGW fiber optic closure is existing bilateral splice tray to be changed to threeway " T " formula connect Carry out again extracting after continuous box connecting.
A kind of microwave relay-OPGW optic communication links, include the SDH digital microwave equipment at jump two ends and two pieces UFIU UMSC Fiber Interface Unit, SDH digital microwave equipment is connected with UFIU UMSC Fiber Interface Unit and is divided into and building transformer station and building near transformer station Physical features is relatively high and and is building the transmission line of electricity bar that unobstructed sighting condition between transformer station is good, have OPGW fiber optic closure At tower or related commanding elevation, building transformer station SDH digital microwave equipment antenna and outdoor unit is then installed on outdoor eminence, and will Pass through optical fiber jumper connection phase building transformer station SDH digital microwave equipment UFIU UMSC Fiber Interface Unit with the optical interface in the optical transmitter and receiver building transformer station Even, setting digital microwave equipment and UFIU UMSC Fiber Interface Unit on electric power line pole tower or related commanding elevation, with the OPGW optical fiber extracting The idle optical fiber of splice tray is connected, by built OPGW free time optical fiber and the optical transmitter and receiver of built transformer station or grid nodes Optical interface is connected.
Microwave relay-OPGW the optic communication links of this structure, by building transformer station and the transmission line of electricity chosen Add digital microwave equipment on shaft tower or related commanding elevation, by UFIU UMSC Fiber Interface Unit, connect idle in built OPGW On optical fiber, and it is attached with the optical interface of existing optical transmitter and receiver respectively so that originally non-thang-kng fine building transformer station Realize communicating by microwave relay between built transformer station or grid nodes, by this microwave provisional communication mode, substitute The temporary erection OPGW fibre circuit adopting in prior art, possesses simple to operate, originally can only be 1~2 genius before operation The joint debugging of the devices such as secondary relay protection, the automatization of anxiety can be carried out, just can open within nearly one month before going into operation till now in advance Beginning joint debugging, through skilled addressee's actual debugging application, this passage is not as actual whole OPGW optical-fibre channel, any Difference, fully meets and is building the device combined signal such as substation secondary relay protection, dispatching automation debugging demand.Practice Effect is significant, has reached project the set goal.
It is equipped with variable Optical attenuator at microwave UFIU UMSC Fiber Interface Unit.
It is provided simultaneously with optical signal and electric signal interface can carry out microwave electromagnetic signal and mutually change with optical signal, add variable Optical attenuator can be received and dispatched to microwave equipment optical port from ring debugging and circuitry specifications adjustment.
Described UFIU UMSC Fiber Interface Unit is STM-1 UFIU UMSC Fiber Interface Unit, and transfer rate is 155Mbps.
Carry out, after being using threeway " T " formula splice tray from the mode that OPGW fiber optic closure extracts idle optical fiber, the company of extraction again Connect.
In sum, the present invention following advantage compared to existing technology:
The present invention is micro- using interim increase in treatment in accordance with local conditions between building between transformer station and built transformer station or grid nodes Ripple relay communication method, form microwave relay-OPGW optic communication links, solve PGW optical fiber enter the station " last one kilometer " ask Topic, possesses simple and practical, reduced investment, the advantages of build fast, originally just can only can be carried out within 1~2 day before operation the two of anxiety Secondary device joint debugging, just can start joint debugging for nearly one month before going into operation till now in advance, microwave equipment simultaneously can repeated multiple times use, than Temporary erection OPGW optical fiber approach saves great amount of investment, and has dissolved temporary erection OPGW optical fiber and need to arrange for a plurality of electric power A difficult problem for line outage, avoids impact to existing optical communication network it is ensured that operating communication system of power grids network security is smooth simultaneously Logical.Through skilled addressee actual debugging application, this passage with reality whole OPGW optical-fibre channel as, do not have any not Same, fully meet and become the device combined signals such as secondary relay protection, dispatching automation debugging demand in the 220kV Wu Dian building.Existing In multiple project of transmitting and converting electricity practice such as 220kV Wu Dian change, 110 kV grinding stones changes, effect is significant, reach project expection Target.
Brief description
Fig. 1 is the microwave relay-OPGW optic communication links schematic diagram of the present invention.
Specific embodiment
With reference to embodiment, the present invention is described in more detail.
Embodiment 1
A kind of as shown in Figure 1 in the method building provisional communication between transformer station and built transformer station, 1, be chosen at and build Nearby physical features is relatively high for Foochow 220kV Wu Dian transformer station, and good building unobstructed sighting condition between 220kV Wu Dian transformer station, And have in the 220kV woods of OPGW fiber optic closure-upper Jing transmission line of electricity #39 a steel tower, and 2, the SDH digital microwave at jump two ends is provided Equipment simultaneously configures two pieces of STM-1 UFIU UMSC Fiber Interface Units, 3, in 220kV Wu Dian transformer station by SDH digital microwave equipment antenna and outdoor Unit be installed on and 220kV in unobstructed outdoor eminence between Jing line #39 steel tower, SDH digital microwave equipment outdoor unit leads to Cross coaxial cable to be connected with microwave equipment interior light unit power port, microwave equipment UFIU UMSC Fiber Interface Unit passes through optical fiber jumper connection and has SDH optical transmitter and receiver STM-1 optical port be connected, and according to actual path length increase the variable Optical attenuator of 10db be adjusted, 4, On Jing transmission line of electricity #39 steel tower, other end digital microwave equipment and UFIU UMSC Fiber Interface Unit are installed in the 220kV choosing, and near general The OPGW fiber optic closure of bilateral transform " T " formula threeway mode as, extracts idle optical fiber and SDH microwave UFIU UMSC Fiber Interface Unit optical port phase Even, 5, in the 220kV of 220kV Wu Dian transformer station and selection between Jing line #39 steel tower microwave electromagnetic signal through UFIU UMSC Fiber Interface Unit After being converted to optical signal, Jing transformer station SDH light on the built 220kV of far-end is sent to by built OPGW free time optical fiber Terminal STM-1 optical interface, realizes the STM-1 between Jing transformer station in the 220kV Wu Dian transformer station building and built 220kV Optic communication.In conjunction with existing SDH Networks of Fiber Communications, open respectively build project of transmitting and converting electricity 220kV Wu Dian transformer station with built Between 220kV upper Jing transformer station, Lin Zhong transformer station, relay protection of transmission line device 4 × 2Mbps joint debugging passage, opens respectively The 220kV Wu Dian transformer station building and Foochow dispatching of power netwoks control centre, the dispatching automation of dispatching of power netwoks control centre of Fujian Province Device 2 × 2Mbps joint debugging passage etc..Described SDH digital microwave equipment is the carrying out by the way of a jump equipment, described SDH digital microwave UFIU UMSC Fiber Interface Unit is provided simultaneously with optical signal and electric signal interface, and transfer rate is 155Mbps.Dotted line frame in Fig. 1 The interior interim microwave equipment for substituting OPGW optical fiber.
The present embodiment is not described partly same as the prior art.
Embodiment 2
A kind of microwave relay-OPGW optic communication links, include the SDH digital microwave equipment at jump two ends and two blocks of light Interface unit, is arranged on 110kV mill in the Fuqing 110kV grinding stone transformer station SDH digital microwave equipment antenna built and outdoor unit Stone transformer station steel tower eminence(Related commanding elevation/grid nodes), outdoor unit entered by coaxial cable with indoor UFIU UMSC Fiber Interface Unit Row power port connects, and indoor UFIU UMSC Fiber Interface Unit carries out optical port with existing SDH optical transmitter and receiver optical interface by optical fiber jumper connection and is connected.Another End SDH digital microwave equipment antenna and outdoor unit are then installed on and power building Fuqing City Jing Yang near 110kV grinding stone transformer station Institute(Grid nodes)Roof eminence(Related commanding elevation), Jing Yang power supply station roof SDH digital microwave equipment outdoor unit is passed through Coaxial cable is connected to indoor microwave UFIU UMSC Fiber Interface Unit to carry out power port and is connected, and indoor microwave UFIU UMSC Fiber Interface Unit passes through optical fiber jumper connection Carry out optical port with SDH optical transmitter and receiver UFIU UMSC Fiber Interface Unit existing in Jing Yang power supply station to be connected, Jing Yang power supply station SDH optical transmitter and receiver has passed through general Thang-kng cable accesses existing POWER SYSTEM SDH optical transport network.According to 110kV grinding stone transformer station defeated change station engineering construction demand, Open the dispatching automation device joint debugging passage in the 110kV grinding stone transformer station building to Fuqing City dispatching of power netwoks control centre respectively With power dispatching telephone business, realize building 110kV grinding stone transformer station and Fuqing City dispatching of power netwoks control centre(Grid nodes) Dispatching automation device signal joint debugging.Described SDH digital microwave equipment is that microwave one jumps equipment.Described UFIU UMSC Fiber Interface Unit For STM-1 UFIU UMSC Fiber Interface Unit, transfer rate is 155Mbps, and wherein dispatching automation device joint debugging passage is 2Mbps, and electric power is adjusted Degree telephone service 64Kbps.It is equipped with variable Optical attenuator at UFIU UMSC Fiber Interface Unit, be adjusted according to circuit attenuation index.
The present embodiment is not described partly same as the prior art.

Claims (6)

1. a kind of in the method building provisional communication between transformer station and built transformer station or grid nodes it is characterised in that:Step As follows:(1)It is chosen at and builds transformer station nearby physical features is relatively high, and unobstructed sighting condition is good building between transformer station, has OPGW The electric power line pole tower of fiber optic closure or related commanding elevation,(2)There is provided one to jump SDH digital microwave equipment and configure two pieces of light Interface unit, UFIU UMSC Fiber Interface Unit is connected to the two ends of SDH digital microwave equipment,(3)Building transformer station by one end The UFIU UMSC Fiber Interface Unit of SDH digital microwave equipment is connected with building transformer station's existing SDH optical transmitter and receiver optical interface, SDH digital microwave Device antenna and outdoor unit are then installed on building outside transformer substation eminence,(4)In the electric power line pole tower chosen or related system In high point, other end SDH digital microwave equipment and UFIU UMSC Fiber Interface Unit are installed, extract idle optical fiber and be connected with UFIU UMSC Fiber Interface Unit, realize Communicate with building radio relay communication between transformer station,(5)In the microwave electricity building transformer station to choose between shaft tower or related commanding elevation Magnetic signal is converted to after optical signal through UFIU UMSC Fiber Interface Unit, is connected by built OPGW optical fiber, be sent to built transformer station or Grid nodes, realize in the communication building transformer station and built transformer station or grid nodes.
2. according to claim 1 in the method building provisional communication between transformer station and built transformer station or grid nodes, It is characterized in that:The mode extracting idle optical fiber from OPGW fiber optic closure is that existing bilateral splice tray is changed to threeway " T " Carry out again extracting after formula splice tray connecting.
3. a kind of microwave relay-OPGW optic communication links it is characterised in that:The SDH digital microwave including jump two ends sets Standby and two pieces of UFIU UMSC Fiber Interface Unit, SDH digital microwave equipment is connected with UFIU UMSC Fiber Interface Unit and is divided into and building transformer station and building Transformer station nearby physical features relatively high and and build unobstructed sighting condition between transformer station good, have OPGW fiber optic closure At electric power line pole tower or related commanding elevation, building transformer station SDH digital microwave equipment antenna and outdoor unit is then installed on room Outer eminence, and by build transformer station SDH digital microwave equipment UFIU UMSC Fiber Interface Unit with the optical interface building the existing optical transmitter and receiver of transformer station It is connected by optical fiber jumper connection, setting digital microwave equipment and UFIU UMSC Fiber Interface Unit on electric power line pole tower or related commanding elevation, with The idle optical fiber of the OPGW fiber optic closure extracting is connected, by built OPGW free time optical fiber and built transformer station or electrical network The optical interface of the optical transmitter and receiver of node is connected.
4. microwave relay-OPGW optic communication links according to claim 3 it is characterised in that:In microwave optical interface list First place adds variable Optical attenuator.
5. microwave relay-OPGW optic communication links according to claim 4 it is characterised in that:Described optical interface list Unit is STM-1 UFIU UMSC Fiber Interface Unit.
6. microwave relay-OPGW optic communication links according to claim 5 it is characterised in that:From OPGW fibre junction The mode that box extracts idle optical fiber is using carrying out extracting after threeway " T " formula splice tray connecting again.
CN201310013206.3A 2013-01-15 2013-01-15 Temporary communication method between transformer substation under construction and built transformer substation or power grid node and microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link Active CN103078679B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310013206.3A CN103078679B (en) 2013-01-15 2013-01-15 Temporary communication method between transformer substation under construction and built transformer substation or power grid node and microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310013206.3A CN103078679B (en) 2013-01-15 2013-01-15 Temporary communication method between transformer substation under construction and built transformer substation or power grid node and microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link

Publications (2)

Publication Number Publication Date
CN103078679A CN103078679A (en) 2013-05-01
CN103078679B true CN103078679B (en) 2017-02-08

Family

ID=48155094

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310013206.3A Active CN103078679B (en) 2013-01-15 2013-01-15 Temporary communication method between transformer substation under construction and built transformer substation or power grid node and microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link

Country Status (1)

Country Link
CN (1) CN103078679B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107317623A (en) * 2017-06-15 2017-11-03 广东电网有限责任公司电网规划研究中心 A kind of project of transmitting and converting electricity provisional communication method based on OTN
CN110035335A (en) * 2019-03-29 2019-07-19 国家电网有限公司 A method of for creating the debugging of substation's telecontrol information
CN110609214B (en) * 2019-10-28 2024-04-16 东北电力大学 Non-blind area on-line monitoring and fault automatic detection system for optical cable network of electric power system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102447513A (en) * 2011-09-05 2012-05-09 北京邮电大学 60GHz millimeter wave-based optical wireless fusion video transmission system and method
CN203135888U (en) * 2013-01-15 2013-08-14 福建省电力有限公司 Microwave relay-OPGW fiber communication link

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103259751B (en) * 2007-12-19 2016-04-20 福尔肯纳米有限公司 For improving communication speed, spectrum efficiency realize suppress sideband communication system and the method for other benefits
US8989088B2 (en) * 2011-01-07 2015-03-24 Integrated Device Technology Inc. OFDM signal processing in a base transceiver system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102447513A (en) * 2011-09-05 2012-05-09 北京邮电大学 60GHz millimeter wave-based optical wireless fusion video transmission system and method
CN203135888U (en) * 2013-01-15 2013-08-14 福建省电力有限公司 Microwave relay-OPGW fiber communication link

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
微波技术在电力通信跨海联网中的应用;吴飞龙,杨力帆;《电信技术》;20100831;1-4 *

Also Published As

Publication number Publication date
CN103078679A (en) 2013-05-01

Similar Documents

Publication Publication Date Title
CN103887879B (en) Petal-shaped distribution protection control system
CN106374463B (en) A kind of A+ classes power supply area power distribution network powering mode configuration method
CN102682586A (en) Transmission line state monitoring communication system
CN103247992A (en) DC deicing method for overhead ground wires and OPGWs in electric transmission lines
CN103078679B (en) Temporary communication method between transformer substation under construction and built transformer substation or power grid node and microwave relay-optical fiber composite overhead ground wire (OPGW) optical fiber communication link
CN103703653A (en) Switching apparatus, control system and method for varying impedance of phase line
CN201523260U (en) Total station double star type GOOSE network system adapting to protection configurations
CN203135888U (en) Microwave relay-OPGW fiber communication link
CN101166041B (en) Radio-frequency far end distributed system in radio communication system
CN107682084A (en) A kind of photoelectric communication conversion equipment and photoelectric communication system
CN102545175B (en) Underground anti-override tripping system based on radio frequency network
CN206977155U (en) A kind of energy management system based on communication
CN106300262A (en) A kind of 220kV grade transformer protection method for transformer station's remote power-feeding
CN108173245B (en) The implementation method of combined floodgate is thought highly of in open circuit in a kind of intelligent substation
CN103606908B (en) It is applicable to the protection system of power grid integrated circuit
CN107889165A (en) Mobile substation free wireless public LTE network scheduling termination high-speed communication system and method
CN205212835U (en) On --spot emergent command net twine system of electric power
Boutsiadis et al. Ripple signaling control for ancillary services in distribution networks
CN101598933B (en) Automatic tuning communication control method for digital arc suppression coil
CN204793998U (en) Relay protection signal transmission equipment
CN209545252U (en) A kind of intelligent substation management system
CN202353563U (en) Intelligent power-distributing network optical fiber double-loop self-healing communication and measurement system
Abouelgheit Information and Communication Technologies in Modern Electrical Networks: A Brief Review
CN103997628A (en) Method and communication structure for optimizing thermal power plant information system
CN103905177A (en) Sampling value transmission system and transmission method applied to wide-area protection

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