CN114221371A - Cross-station communication system and method for direct current converter station and intelligent alternating current station - Google Patents

Cross-station communication system and method for direct current converter station and intelligent alternating current station Download PDF

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Publication number
CN114221371A
CN114221371A CN202111531861.9A CN202111531861A CN114221371A CN 114221371 A CN114221371 A CN 114221371A CN 202111531861 A CN202111531861 A CN 202111531861A CN 114221371 A CN114221371 A CN 114221371A
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China
Prior art keywords
alternating current
station
information acquisition
switch
control protection
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Pending
Application number
CN202111531861.9A
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Chinese (zh)
Inventor
余江盛
郭约法
陈振良
樊俊鹏
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Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
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Priority to CN202111531861.9A priority Critical patent/CN114221371A/en
Publication of CN114221371A publication Critical patent/CN114221371A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H02H1/0069—Details of emergency protective circuit arrangements concerning transmission of signals by means of light or heat rays
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
    • 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
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
    • 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
    • Y04S40/124—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 wired telecommunication networks or data transmission busses

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a cross-station communication system and method for a direct current converter station and an intelligent alternating current station. The system comprises: the intelligent AC station, the AC information acquisition device and the DC convertor station; the intelligent alternating-current station comprises a process layer central switch and a switch device; the process layer central switch is electrically connected with the switch equipment and is used for acquiring a disconnecting link signal and a tripping signal output by the switch equipment; the alternating current information acquisition device is connected with the process layer central switch through an information transmission line, and the direct current converter station comprises a control protection host; the alternating current information acquisition device is connected with the control protection host through an information transmission line; the alternating current information acquisition device is used for receiving the switch signals and the trip signals output by the process layer central switch through a goose communication protocol; and the disconnecting link signal and the tripping signal are transmitted to the control protection host through a network communication protocol. According to the scheme, the remote information interaction of the intelligent alternating-current station and the direct-current converter station is realized through the alternating-current information acquisition device.

Description

Cross-station communication system and method for direct current converter station and intelligent alternating current station
Technical Field
The embodiment of the invention relates to the electrical system technology, in particular to a cross-station communication system and method for a direct current converter station and an intelligent alternating current station.
Background
The flexible direct current transmission is a new generation direct current transmission system, can realize independent control of active power and reactive power, and has strong transmission flexibility and obvious advantages. The direct-current transmission system comprises a direct-current converter station and an alternating-current station; an alternating current station exists in part of the direct current converter stations, and a control and protection system in the direct current converter stations directly collects signals of switches, disconnecting links and tripping in alternating current field equipment so as to perform interlocking logic subsequently. In recent years, a plurality of flexible direct current transmission projects are built in China, due to various reasons such as planning or site selection, an alternating current field does not exist in part of direct current converter stations, and the distance between two stations is usually far (hundreds of meters), so that the direct current converter stations cannot acquire switches, disconnecting links and tripping signals in the alternating current stations; therefore, the subsequent interlocking logic of the control and protection host is influenced, and certain difficulty is brought to the construction and operation of the flexible direct current transmission project.
Disclosure of Invention
The invention provides a cross-station communication system and method for a direct current converter station and an intelligent alternating current station, which are used for realizing remote information interaction between the intelligent alternating current station and the direct current converter station through an alternating current information acquisition device.
In a first aspect, an embodiment of the present invention provides a cross-station communication system between a dc converter station and an intelligent ac station, where the cross-station communication system between the dc converter station and the intelligent ac station includes: the intelligent AC station, the AC information acquisition device and the DC convertor station;
the intelligent alternating-current station comprises a process layer central switch and a switch device; the process layer central switch is electrically connected with the switch equipment and is used for acquiring a disconnecting link signal and a tripping signal output by the switch equipment;
the alternating current information acquisition device is connected with the process layer central switch through an information transmission line, and the direct current converter station comprises a control protection host; the alternating current information acquisition device is connected with the control protection host through an information transmission line;
the alternating current information acquisition device is used for receiving the switch signals and the trip signals output by the process layer central switch through a goose communication protocol; and transmitting the disconnecting link signal and the tripping signal to the control protection host through a network communication protocol.
Optionally, the communication information acquisition device is arranged in the intelligent communication station.
Optionally, an information transmission route between the alternating current information acquisition device and the process layer central switch is a first optical fiber channel; the information transmission route between the alternating current information acquisition device and the control protection host is a second optical fiber channel;
the direct current converter station and intelligent alternating current station cross-station communication system further comprises: a light distribution frame; the optical distribution frame is arranged on the second optical fiber channel.
Optionally, the exchange information acquisition device includes a first exchange information acquisition unit and a second exchange information acquisition unit;
the process layer network central switch comprises a process layer A network central switch and a process layer B network central switch;
the process layer A network central switch is correspondingly connected with the first alternating current information acquisition unit through an information transmission line; and the process layer B network central switch is correspondingly connected with the second alternating current information acquisition unit through an information transmission line.
Optionally, the control protection host includes a first control protection host and a second control protection host;
the first alternating current information acquisition unit is respectively connected with the first control protection host and the second control protection host through an information transmission line;
the second alternating current information acquisition unit is respectively connected with the first control protection host and the second control protection host through an information transmission line.
In a second aspect, an embodiment of the present invention further provides a cross-station communication method for a dc converter station and an intelligent ac station, where the cross-station communication method for a dc converter station and an intelligent ac station is applied to the cross-station communication system for a dc converter station and an intelligent ac station in the first aspect; the cross-station communication method of the direct current converter station and the intelligent alternating current station comprises the following steps:
the process layer central switch collects a switch signal and a trip signal output by the switch equipment;
the alternating current information acquisition device receives a switch signal and a trip signal output by the process layer network central switch through a goose communication protocol;
and the alternating current information acquisition device transmits the disconnecting link signal and the tripping signal to the control protection host through a network communication protocol.
Optionally, the exchange information acquisition device includes a first exchange information acquisition unit and a second exchange information acquisition unit; the process layer network central switch comprises a process layer A network central switch and a process layer B network central switch;
the exchange information acquisition device receives the switch signal and the trip signal output by the process layer network center switch through a goose communication protocol, and the exchange information acquisition device comprises:
the first alternating current information acquisition unit receives a switch signal and a trip signal output by a central switch of a process layer A network through a goose communication protocol; and the second alternating current information acquisition unit receives the switch signal and the trip signal output by the central switch of the process layer B network through a goose communication protocol.
Optionally, the control protection host includes a first control protection host and a second control protection host;
the cross-station communication method of the direct current converter station and the intelligent alternating current station further comprises the following steps:
judging the fault levels of the first alternating current information acquisition unit and the second alternating current information acquisition unit;
exchange information acquisition device with switch signal and tripping operation signal pass through network communication protocol and transmit to control protection host computer includes:
when the fault grades of the first alternating current information acquisition unit and the second alternating current information acquisition unit are the same or the distance between the first alternating current information acquisition unit and the second alternating current information acquisition unit has no fault, the first alternating current information acquisition unit transmits the disconnecting link signal and the tripping signal to the first control protection host through a network communication protocol; and the second alternating current information acquisition unit transmits the disconnecting link signal and the tripping signal to the second control protection host through a network communication protocol.
Optionally, when the fault level of the first alternating current information acquisition unit is smaller than that of the second alternating current information acquisition unit, the first alternating current information acquisition unit transmits the switch signal and the trip signal to the first control protection host and the second control protection host through a network communication protocol.
Optionally, when the fault level of the second alternating current information acquisition unit is smaller than that of the first alternating current information acquisition unit, the second alternating current information acquisition unit transmits the switch signal and the trip signal to the first control protection host and the second control protection host through a network communication protocol.
According to the embodiment of the invention, a switch signal and a trip signal output by the switch equipment are collected through a process layer central switch; the alternating current information acquisition device is connected with the process layer central switch through an information transmission line and is connected with the control protection host through the information transmission line; therefore, the alternating current information acquisition device receives the switch signals and the trip signals output by the central switch of the process layer through the goose communication protocol; and the disconnecting link signal and the tripping signal are transmitted to the control protection host through a network communication protocol. According to the scheme, the remote information interaction of the intelligent alternating current station and the direct current converter station is realized through the alternating current information acquisition device. The problem of among the prior art because two stations are far away, switch and tripping signal in the AC station can't be gathered to DC converter station like this is solved.
Drawings
Fig. 1 is a schematic structural diagram of a cross-station communication system between a dc converter station and an intelligent ac station according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another cross-station communication system between a dc converter station and an intelligent ac station according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another cross-station communication system between a dc converter station and an intelligent ac station according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a cross-station communication method between a dc converter station and an intelligent ac station according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of another method for inter-station communication between a dc converter station and an intelligent ac station according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a cross-station communication system between a dc converter station and an intelligent ac station according to an embodiment of the present invention, and as shown in fig. 1, the cross-station communication system includes: the intelligent alternating current station 10, the alternating current information acquisition device 20 and the direct current converter station 30; the intelligent alternating-current station 10 comprises a process layer central switch 11 and a switch device 12; the process layer central switch 11 is electrically connected with the switch device 12 and is used for acquiring a switch signal and a trip signal output by the switch device 12; the alternating current information acquisition device 20 is connected with the process layer central switch 11 through an information transmission line, and the direct current converter station 30 comprises a control protection host 31; the alternating current information acquisition device 20 is connected with the control protection host 31 through an information transmission line; the alternating current information acquisition device 20 is used for receiving the switch signals and the trip signals output by the process layer central switch 11 through a goose communication protocol; and transmits the disconnecting link signal and the trip signal to the control protection host 31 through a network communication protocol.
The direct-current transmission system comprises a direct-current converter station and an intelligent alternating-current station; the intelligent alternating current station provides an alternating current power supply for the direct current converter station; under normal conditions, an alternating current station exists in a direct current converter station, and a control and protection system in the direct current converter station directly acquires a switch, a disconnecting link and a tripping signal of an intelligent alternating current station so as to perform interlocking logic subsequently. However, because of the site selection in the dc transmission system, there is no ac station in some dc converter stations, usually two stations are far apart (several hundred meters), and the dc converter station cannot communicate with the intelligent ac station, in this scheme, the ac information acquisition device 20 is connected to the process layer central switch 11 through an information transmission line, and is also connected to the control protection host 31 through an information transmission line, so that the ac information acquisition device 20 receives the switch signal and the trip signal output by the process layer central switch 11 through a goose communication protocol, and because the protocol of the control protection host 31 in the dc converter station 30 is a network communication protocol, the ac information acquisition device 20 converts the switch signal and the trip signal into a network communication protocol of the control protection host 31, and transmits the switch signal and the trip signal to the control protection host 31 through the network communication protocol. According to the scheme, the remote information interaction between the intelligent alternating-current station and the direct-current converter station is realized through the alternating-current information acquisition device 20.
Optionally, fig. 2 is a schematic structural diagram of another cross-station communication system between a dc converter station and an intelligent ac station according to an embodiment of the present invention, and as shown in fig. 2, an ac information collecting device 20 is disposed in the intelligent ac station 10. Thus, the communication information acquisition device 20 is integrated in the intelligent communication station 10, and the integrated design of the intelligent communication station 10 is realized.
Optionally, with reference to fig. 2, the information transmission route between the ac information collecting device 20 and the process layer central switch 11 is a first optical fiber channel; the information transmission route between the ac information collecting device 20 and the control protection host 31 is a second optical fiber channel, and the cross-station communication system between the dc converter station and the intelligent ac station further includes: a first optical bench 40 and a second optical bench 50; the first optical bench 40 and the second optical bench 50 are disposed on the second fiber channel. Wherein, the first optical distribution frame 40 is arranged at one side of the alternating current information acquisition device 20; the second optical distribution frame 50 is arranged on one side of the control protection host 31; the first optical distribution rack 40 and the second optical distribution rack 50 can facilitate connection of optical fiber lines on the second optical fiber channel, and can realize remote optical fiber communication between the intelligent ac station 10 and the dc converter station 30.
Optionally, fig. 3 is a schematic structural diagram of a cross-station communication system between a dc converter station and an intelligent ac station according to an embodiment of the present invention, and as shown in fig. 3, an ac information collecting device 20 includes a first ac information collecting unit 21 and a second ac information collecting unit 22; the process layer central switch 11 comprises a process layer A network central switch 111 and a process layer B network central switch 112; the process layer A network center switch 111 is correspondingly connected with the first alternating current information acquisition unit 21 through an information transmission line; the process layer B network central switch 112 is correspondingly connected with the second alternating current information acquisition unit 22 through an information transmission line. The first alternating current information acquisition unit 21 is only in communication with the process layer a network central switch 111, that is, the first alternating current information acquisition unit 21 only receives the switch signal and the trip signal output by the process layer a network central switch 111 through the goose communication protocol; the second ac information collecting unit 22 only communicates with the process layer B network central switch 112, that is, the second ac information collecting unit 22 only receives the switch signal and the trip signal output by the process layer B network central switch 112 through the goose communication protocol.
Optionally, with continued reference to fig. 3, the control protection host 31 includes a first control protection host 311 and a second control protection host 312; the first alternating current information acquisition unit 21 is respectively connected with the first control protection host 311 and the second control protection host 312 through information transmission lines; the second alternating current information collection unit 22 is connected with the first control protection host 311 and the second control protection host 312 through information transmission lines respectively.
Wherein the first optical bench 40 includes a first optical bench a and a first optical bench B; the second optical bench 50 includes a second optical bench a and a second optical bench B; the first alternating current information acquisition unit 21 may transmit the acquired signal to the first control protection host 311 through the first optical distribution frame a and the second optical distribution frame a by using the long-distance optical fiber; and is transmitted to the second control protection host 312 through the first optical distribution frame B and the second optical distribution frame B by long-distance optical fibers; similarly, the second ac information collecting unit 22 may transmit the collected signal to the first control and protection host 311 through the first optical distribution frame a and the second optical distribution frame a long-distance optical fiber; and transmitted to the second control and protection host 312 via the first optical distribution rack B and the second optical distribution rack B via long-distance optical fibers.
It should be noted that, the first control protection host 311 and the second control protection host 312 may select data sent by the ac collected information unit 21 according to the failure level of the first ac collected information unit 21 and the second ac collected information unit 22. Specifically, when neither the first ac collecting information unit 21 nor the second ac collecting information unit 22 has a fault or the fault levels are the same, the first control and protection host 311 preferentially selects the data sent by the first ac collecting unit 21, and the second control and protection host 312 preferentially selects the data sent by the second ac collecting unit 22. When the fault level of the first ac collecting information unit 21 is greater than the fault level of the second ac collecting information unit 22, both the first control and protection host 311 and the second control and protection host 312 select the data sent by the second ac collecting information unit 22 at the same time. When the fault level of the first ac collecting information unit 21 is smaller than the fault level of the second ac collecting information unit 22, both the first control and protection host 311 and the second control and protection host 312 select the data sent by the first ac collecting information unit 21.
The embodiment of the present invention further provides a cross-station communication method between a dc converter station and an intelligent ac station, and fig. 4 is a schematic flow chart of the cross-station communication method between a dc converter station and an intelligent ac station, which is provided in the embodiment of the present invention, and the method is applied to the cross-station communication system between a dc converter station and an intelligent ac station described in the above embodiment; as shown in fig. 4, the method for cross-site communication between the dc converter station and the intelligent ac station includes:
s110, the process layer central switch collects a switch signal and a trip signal output by the switch equipment.
And S120, the alternating current information acquisition device receives the switch signals and the trip signals output by the process layer network center switch through a goose communication protocol.
And S130, the alternating current information acquisition device transmits the disconnecting link signal and the tripping signal to the control protection host through a network communication protocol.
The technical scheme is that the system is connected with a process layer central switch through an information transmission line and is also connected with a control protection host through the information transmission line, so that the alternating current information acquisition device receives a switch signal and a trip signal output by the process layer central switch through a goose communication protocol, and the protocol of the control protection host in the direct current conversion station is a network communication protocol, so that the alternating current information acquisition device converts the switch signal and the trip signal into the network communication protocol of the control protection host and transmits the switch signal and the trip signal to the control protection host through the network communication protocol. According to the scheme, the remote information interaction of the intelligent alternating current station and the direct current converter station is realized through the alternating current information acquisition device.
Optionally, on the basis of the foregoing embodiment, further refinement is performed, and fig. 5 is a schematic flow chart of another cross-station communication method between a dc converter station and an intelligent ac station, provided by the embodiment of the present invention, as shown in fig. 5, the cross-station communication method between the dc converter station and the intelligent ac station includes:
s210, the process layer central switch collects a switch signal and a trip signal output by the switch equipment.
The process layer central switch comprises a process layer A network central switch and a process layer B network central switch; the process layer A network central switch and the process layer B network central switch acquire a switch signal and a trip signal output by the switch device.
S220, the first alternating current information acquisition unit receives a disconnecting link signal and a tripping signal output by the central switch of the process layer A network through a goose communication protocol; and the second alternating current information acquisition unit receives the switch signal and the trip signal output by the process layer B network central switch through a goose communication protocol.
Referring to fig. 3, the ac information collecting apparatus 20 includes a first ac information collecting unit 21 and a second ac information collecting unit 22; the process layer network center switch 11 comprises a process layer A network center switch 111 and a process layer B network center switch 112; the ac information collecting device 20 receives the switch signal and the trip signal outputted from the process layer central switch 11 through the goose communication protocol, and includes: the first alternating current information acquisition unit 21 receives a disconnecting link signal and a tripping signal output by the process layer A network central switch 111 through a goose communication protocol; the second ac information collecting unit 22 receives the switch signal and the trip signal output from the process layer B network central switch 112 through the goose communication protocol. The first ac information collection unit 21 communicates only with the process level a network central exchange 111, and the second ac information collection unit 22 communicates only with the process level B network central exchange 112.
And S230, judging the fault levels of the first alternating current information acquisition unit and the second alternating current information acquisition unit.
Referring to fig. 3, the control protection host 31 includes a first control protection host 311 and a second control protection host 312; the first alternating current information acquisition unit 21 is respectively connected with the first control protection host 311 and the second control protection host 312 through information transmission lines; the second alternating current information collection unit 22 is connected with the first control protection host 311 and the second control protection host 312 through information transmission lines respectively. The first control protection host 311 and the second control protection host 312 may select data sent by each of the ac collected information units according to the failure levels of the first ac collected information unit 21 and the second ac collected information unit 22.
S240, when the fault grades of the first alternating current information acquisition unit and the second alternating current information acquisition unit are the same or the distance between the first alternating current information acquisition unit and the second alternating current information acquisition unit has no fault, the first alternating current information acquisition unit transmits a disconnecting link signal and a tripping signal to the first control protection host through a network communication protocol; and the second alternating current information acquisition unit transmits the disconnecting link signal and the tripping signal to the second control protection host through a network communication protocol.
And S250, when the fault grade of the first alternating current information acquisition unit is smaller than that of the second alternating current information acquisition unit, the first alternating current information acquisition unit transmits the disconnecting link signal and the tripping signal to the first control protection host and the second control protection host through a network communication protocol.
And S260, when the fault grade of the second alternating current information acquisition unit is smaller than that of the first alternating current information acquisition unit, the second alternating current information acquisition unit transmits the disconnecting link signal and the tripping signal to the first control protection host and the second control protection host through a network communication protocol.
According to the scheme, on the basis of realizing remote information interaction between the intelligent alternating current station and the direct current converter station, data sent by each alternating current information acquisition unit is further selected according to the fault levels of the first alternating current information acquisition unit and the second alternating current information acquisition unit, and the reliability and stability of communication between the alternating current information acquisition device and the control protection host are further improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A cross-station communication system of a direct current converter station and an intelligent alternating current station is characterized by comprising: the intelligent AC station, the AC information acquisition device and the DC convertor station;
the intelligent alternating-current station comprises a process layer central switch and a switch device; the process layer central switch is electrically connected with the switch equipment and is used for acquiring a disconnecting link signal and a tripping signal output by the switch equipment;
the alternating current information acquisition device is connected with the process layer central switch through an information transmission line, and the direct current converter station comprises a control protection host; the alternating current information acquisition device is connected with the control protection host through an information transmission line;
the alternating current information acquisition device is used for receiving the switch signals and the trip signals output by the process layer central switch through a goose communication protocol; and transmitting the disconnecting link signal and the tripping signal to the control protection host through a network communication protocol.
2. The system according to claim 1, wherein the ac information collection device is disposed in the ac station.
3. The cross-station communication system of the direct current converter station and the intelligent alternating current station according to claim 2, wherein an information transmission route between the alternating current information acquisition device and the process layer central switch is a first optical fiber channel; the information transmission route between the alternating current information acquisition device and the control protection host is a second optical fiber channel;
the direct current converter station and intelligent alternating current station cross-station communication system further comprises: a first optical distribution frame and a second optical distribution frame; the first optical distribution frame and the second optical distribution frame are arranged on the second optical fiber channel.
4. The cross-station communication system of the direct current converter station and the intelligent alternating current station according to claim 1, wherein the alternating current information acquisition device comprises a first alternating current information acquisition unit and a second alternating current information acquisition unit;
the process layer central switch comprises a process layer A network central switch and a process layer B network central switch;
the process layer A network central switch is correspondingly connected with the first alternating current information acquisition unit through an information transmission line; and the process layer B network central switch is correspondingly connected with the second alternating current information acquisition unit through an information transmission line.
5. The cross-station communication system of the direct current converter station and the intelligent alternating current station according to claim 4, wherein the control protection host comprises a first control protection host and a second control protection host;
the first alternating current information acquisition unit is respectively connected with the first control protection host and the second control protection host through an information transmission line;
the second alternating current information acquisition unit is respectively connected with the first control protection host and the second control protection host through an information transmission line.
6. A cross-station communication method of a direct current converter station and an intelligent alternating current station is characterized by being applied to the cross-station communication system of the direct current converter station and the intelligent alternating current station according to any one of claims 1-5; the cross-station communication method of the direct current converter station and the intelligent alternating current station comprises the following steps:
the process layer central switch collects a switch signal and a trip signal output by the switch equipment;
the alternating current information acquisition device receives a switch signal and a trip signal output by the process layer network central switch through a goose communication protocol;
and the alternating current information acquisition device transmits the disconnecting link signal and the tripping signal to the control protection host through a network communication protocol.
7. The cross-station communication method of the direct current converter station and the intelligent alternating current station according to claim 6, wherein the alternating current information acquisition device comprises a first alternating current information acquisition unit and a second alternating current information acquisition unit; the process layer network central switch comprises a process layer A network central switch and a process layer B network central switch;
the exchange information acquisition device receives the switch signal and the trip signal output by the process layer network center switch through a goose communication protocol, and the exchange information acquisition device comprises:
the first alternating current information acquisition unit receives a switch signal and a trip signal output by the process layer A network central switch through a goose communication protocol; and the second alternating current information acquisition unit receives the switch signal and the trip signal output by the process layer B network central switch through a goose communication protocol.
8. The cross-station communication method of the direct current converter station and the intelligent alternating current station according to claim 7, wherein the control protection host comprises a first control protection host and a second control protection host;
the cross-station communication method of the direct current converter station and the intelligent alternating current station further comprises the following steps:
judging the fault levels of the first alternating current information acquisition unit and the second alternating current information acquisition unit;
exchange information acquisition device with switch signal and tripping operation signal pass through network communication protocol and transmit to control protection host computer includes:
when the fault grades of the first alternating current information acquisition unit and the second alternating current information acquisition unit are the same or the distance between the first alternating current information acquisition unit and the second alternating current information acquisition unit has no fault, the first alternating current information acquisition unit transmits the disconnecting link signal and the tripping signal to the first control protection host through a network communication protocol; and the second alternating current information acquisition unit transmits the disconnecting link signal and the tripping signal to the second control protection host through a network communication protocol.
9. The cross-station communication method for the direct current converter station and the intelligent alternating current station according to claim 8, wherein when the fault level of the first alternating current information acquisition unit is smaller than that of the second alternating current information acquisition unit, the first alternating current information acquisition unit transmits the switch signal and the trip signal to the first control protection host and the second control protection host through a network communication protocol.
10. The cross-station communication method for the direct current converter station and the intelligent alternating current station according to claim 9, wherein when the fault level of the second alternating current information acquisition unit is smaller than that of the first alternating current information acquisition unit, the second alternating current information acquisition unit transmits the switch signal and the trip signal to the first control protection host and the second control protection host through a network communication protocol.
CN202111531861.9A 2021-12-14 2021-12-14 Cross-station communication system and method for direct current converter station and intelligent alternating current station Pending CN114221371A (en)

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CN104253483A (en) * 2014-09-04 2014-12-31 广西电网公司电力科学研究院 Redundancy protection method and system of transformer substation
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CN207853566U (en) * 2018-01-31 2018-09-11 中国电力工程顾问集团中南电力设计院有限公司 Interface screen connection structure is protected in the control of flexible direct current back-to-back converter substation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101841189A (en) * 2010-05-06 2010-09-22 国电南瑞科技股份有限公司 Centralized protection, measurement and control device and realizing method thereof
CN102185387A (en) * 2011-06-03 2011-09-14 云南电网公司普洱供电局 Triple play method of process layer in intelligent substation
CN104052633A (en) * 2014-05-29 2014-09-17 国家电网公司 Integrated testing method for intelligent station 61850 and telecontrol 104 protocol
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