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CN114498919A - Remote control system and remote control method for intelligent substation - Google Patents

Remote control system and remote control method for intelligent substation Download PDF

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Publication number
CN114498919A
CN114498919A CN202111621989.4A CN202111621989A CN114498919A CN 114498919 A CN114498919 A CN 114498919A CN 202111621989 A CN202111621989 A CN 202111621989A CN 114498919 A CN114498919 A CN 114498919A
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CN
China
Prior art keywords
intelligent
remote control
network
equipment
layer
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
Application number
CN202111621989.4A
Other languages
Chinese (zh)
Inventor
李永恒
王其林
郑润蓝
张瑞
吴少林
张文
王勋江
童斯琦
徐玄浩
林辰
樊涛
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.)
Shenzhen Power Supply Bureau Co Ltd
Original Assignee
Shenzhen Power Supply Bureau 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 Shenzhen Power Supply Bureau Co Ltd filed Critical Shenzhen Power Supply Bureau Co Ltd
Priority to CN202111621989.4A priority Critical patent/CN114498919A/en
Publication of CN114498919A publication Critical patent/CN114498919A/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
    • 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
    • H02J13/00034—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 an electric power substation
    • 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
    • H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • 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
    • H02J13/00002—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 monitoring
    • 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
    • H02J13/00022—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 wireless data transmission
    • 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
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The application relates to a remote control system and a remote control method of an intelligent substation. The system also includes: the system comprises station control layer network equipment and spacer layer equipment, wherein the spacer layer equipment comprises an intelligent wave recorder and a measurement and control device; the intelligent oscillograph is in communication interconnection with the measurement and control device through the station control layer network equipment and is used for remotely and wirelessly controlling the electrical equipment in the intelligent substation. By adopting the system, remote monitoring and control of the electrical equipment in the substation can be realized when the substation monitors the background fault.

Description

Remote control system and remote control method for intelligent substation
Technical Field
The application relates to the technical field of power system equipment, in particular to a remote control system and a remote control method for an intelligent substation.
Background
Intelligent substations, also known as digital substations, are the result of substation automation development and grid development. Compared with the traditional transformer substation, the cable between the primary equipment and the protection, measurement and control is replaced by the optical cable, the direct current signal and the alternating current signal transmitted in the cable are replaced by the message transmitted in the network, and the relay hardware loop used for realizing the protection logic in the past is replaced by the software program in the microcomputer protection device.
At present, the operation and maintenance operation modes of the transformer substation are generally divided into two types: few devices are scheduled for remote operation in emergency situations, and most of the operations are performed by operators on site. However, under the condition of a large number of substations, the dispatching master station works in a large number, and the mode can cause that a large amount of time is wasted due to queuing and waiting when an operator applies for the dispatching master station, unnecessary waiting is added to on-site operators, the operation is inconvenient, and a large workload is added to the dispatching.
Disclosure of Invention
Therefore, it is necessary to provide a remote control system and a remote control method for an intelligent substation to control devices in the substation of the substation at the substation end when monitoring a background fault.
In order to achieve the above and other objects, an aspect of the present application provides a remote control system of an intelligent substation including:
the system comprises station control layer network equipment and spacer layer equipment, wherein the spacer layer equipment comprises an intelligent wave recorder and a measurement and control device;
the intelligent oscillograph is in communication interconnection with the measurement and control device through the station control layer network equipment and is used for remotely and wirelessly controlling the electrical equipment in the intelligent substation.
In the remote control system of the intelligent substation in the above embodiment, the intelligent recorder is connected to the station control layer network device, so that the remote monitoring function of the station side is realized. And then the measurement and control device is interconnected with the intelligent wave recorder through the station control layer equipment network, so that the remote control function of the station end is further realized.
In one embodiment, the site-level network devices include a site-level C1 network switch and a site-level C2 network switch.
In one embodiment, the intelligent wave recorder comprises a preset number of acquisition units and a management unit;
the management unit configured to: one end of the network switch is connected with the station control layer C1 network switch through a network cable, and the other end of the network switch is connected with the station control layer C2 network switch through a network cable.
In one embodiment, the remote control system of the intelligent substation further includes: process layer network equipment, station control layer equipment and process layer equipment;
the process level network devices include a process level a1 mesh switch and a process level a2 mesh switch.
In one embodiment, the measurement and control device is configured to: one end of the network switch is connected with the station control layer C1 network switch and the management unit through network cables, one end of the network switch is connected with the process layer A1 network switch through a tail cable, and the other end of the network switch is connected with the process layer A2 network switch through a tail cable.
In one embodiment, the process layer device comprises:
a smart terminal configured to: one end of the monitoring device is connected with the process layer A1 network switch through a tail cable, and the other end of the monitoring device is connected with the process layer A2 network switch through a tail cable;
a circuit breaker configured to: and the intelligent terminal is electrically connected with the intelligent terminal.
Another aspect of the present application provides a remote control method for an intelligent substation, which is applied to the remote control system for an intelligent substation according to any one of the embodiments of the present application, where the method includes:
and sending a remote control signal to the measurement and control device through the intelligent wave recorder according to the damage condition of the electrical equipment in the intelligent substation so as to control the electrical equipment.
In the remote control method of the intelligent substation in the above embodiment, the intelligent recorder is connected to the station control layer network device, so that the remote monitoring function of the station side is realized. And then the measurement and control device is interconnected with the intelligent wave recorder through the station control layer equipment network, so that the remote control function of the station end is further realized.
In one embodiment, the sending a remote control signal to the measurement and control device through the intelligent oscillograph includes:
implanting a remote control authority function into a management unit of the intelligent recorder;
selecting a circuit breaker corresponding to the electrical equipment through a management unit of the intelligent oscillograph;
and the breaker is switched off or switched on according to the remote control signal.
In one embodiment, the selecting, by the management unit of the intelligent wave recorder, the circuit breaker corresponding to the electrical device includes:
sending a selection signal to the circuit breaker;
and judging whether the selection is successful or not according to the received reply signal, wherein the reply signal is a signal generated by the measurement and control device according to the received selection signal.
In one embodiment, the circuit breaker opens or closes according to the remote control signal, including:
the intelligent terminal controls the breaker to open or close according to the GOOSE signal, and the GOSSE signal is a signal generated by the measurement and control device according to the remote control signal.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a remote control system of an intelligent substation provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a main wiring of a circuit breaker provided in an embodiment of the present application;
fig. 3 is a schematic flowchart of a remote control method for an intelligent substation provided in an embodiment of the present application;
fig. 4 is a schematic flow chart of a remote control method for an intelligent substation provided in another embodiment of the present application;
fig. 5 is a schematic flow chart illustrating a remote control method for an intelligent substation provided in another embodiment of the present application;
fig. 6 is a schematic flowchart of a remote control method for an intelligent substation provided in yet another embodiment of the present application.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
As in the background art, the operation and maintenance operation modes of the current substation are generally divided into two modes at present: few devices are scheduled for remote operation in emergency situations, and most of the operations are performed by operators on site.
When a professional team runs and controls the background remote control operation of the transformer substation, when the background monitoring host fails, the remote control operation of the substation end cannot be realized, the team needs to apply for remote operation of the dispatching master station, so that hundreds of transformer substations are responsible, the operation is inconvenient, and a large workload can be added to the dispatching.
Along with the additional installation of intelligent oscillographs in the transformer substation, the operation of professional teams and groups can realize monitoring at the station end, when crisis occurs, most of operation tasks in the transformer substation require transformer substation operation personnel to operate the transformer substation by utilizing a monitoring background in the station, and if the station end background fails to operate, remote operation of a master station can be scheduled.
Based on this, please refer to fig. 1, in an embodiment of the present application, a remote control system of an intelligent substation is provided, the system includes a station level network device and a bay level device, and the bay level device includes an intelligent oscillograph and a measurement and control device;
the intelligent oscillograph is in communication interconnection with the measurement and control device through the station control layer network equipment and is used for remotely and wirelessly controlling the electrical equipment in the intelligent substation.
Specifically, the station control layer network is a double star Ethernet, and the station control layer device and the spacer layer device communicate through the station control layer network. The station control layer network equipment comprises a station control layer central switch and an interval switch. The network communication Protocol between the station control layer and the spacer layer adopts the Microsoft Media Server Protocol (MMS), so the network communication Protocol is also called as MMS network. The Network can be divided into different logical Network segments, i.e. different channels, by dividing a Virtual Local Area Network (VLAN).
The bay level equipment generally refers to secondary equipment such as a relay protection device, a system measurement and control device, a monitoring function group main IED and the like. The function of the bay level equipment is protection, measurement and control, recording, etc., to achieve the function of using data for one bay and acting on the bay primary equipment, i.e., communicating with various remote input/outputs, sensors and controllers.
In the remote control system of the intelligent substation in the above embodiment, the intelligent recorder is connected to the network equipment of the station control layer, so as to realize the remote monitoring function of the station side. And then the measurement and control device is interconnected with the intelligent wave recorder through the station control layer equipment network, so that the remote control function of the station end is further realized.
With continued reference to fig. 1, the site-level network devices include a site-level C1 network switch and a site-level C2 network switch.
Referring to fig. 1, the intelligent oscillograph includes a preset number of acquisition units and a management unit; the management unit configured to: one end of the network switch is connected with the station control layer C1 network switch through a network cable, and the other end of the network switch is connected with the station control layer C2 network switch through a network cable.
With continued reference to fig. 1, the remote control system of the intelligent substation further includes: process layer network equipment, station control layer equipment and process layer equipment;
the process level network devices include a process level a1 mesh switch and a process level a2 mesh switch.
Specifically, the process layer network is a double star fiber ethernet network, and the spacer layer device and the process layer device communicate through the process layer network. The process layer network includes Generic Object Oriented Substation Events (GOOSE). GOOSE networks are used for status and control data exchange between spacer layer and process layer devices. The GOOSE network is generally configured according to voltage class, the voltage class of more than 220kV adopts dual-network redundancy configuration, and a GOOSE network transmission mode is adopted between the protection device and the intelligent terminal at the interval.
The station control layer equipment comprises an automatic station level monitoring control system, a station domain control system, a communication system, a time synchronization system and the like. For example, in some embodiments, the station control layer device may be a monitoring host, a graphics gateway device, a data gateway device, a time synchronization device, and an online monitoring system. The system realizes the functions of monitoring, controlling, alarming and information interaction facing the total station equipment, and completes the relevant functions of data acquisition, monitoring control, operation locking, synchronous phasor acquisition, electric energy acquisition, protection information control and the like.
The process layer equipment comprises primary equipment such as an intelligent terminal, a transformer, a circuit breaker, an isolating switch, a current/voltage transformer and the like, an intelligent assembly to which the primary equipment belongs and an independent intelligent electronic device. For example, in some embodiments, the process layer device may be a switch, a knife switch, a transformer, a reactive device, a merging unit, a smart terminal, and the like. The method is used for realizing the service function of the interlayer equipment and the input and output functions of state quantity and analog quantity, such as data acquisition (sampling) and execution of the control command sent by the interlayer equipment.
With continued reference to fig. 1, the instrumentation is configured to: one end of the network switch is connected with the station control layer C1 network switch and the management unit through network cables, one end of the network switch is connected with the process layer A1 network switch through a tail cable, and the other end of the network switch is connected with the process layer A2 network switch through a tail cable.
Specifically, the measurement and control device includes two functions: measuring, namely ensuring enough precision and reflecting the variable quantity in real time, wherein the measurement comprises analog quantity, current quantity, switching value, temperature quantity, direct current quantity, pressure quantity, flow quantity and the like; and control regulation, namely, receiving a remote or local command to carry out regulation control, and also carrying out regulation control according to logic programming set by the device, wherein the regulation ensures the effectiveness and reliability of the control. The control regulation comprises switch control, silicon controlled rectifier general pulse width modulation technology control and digital-to-analog conversion control.
With continued reference to fig. 1, the process layer device includes a smart terminal and a circuit breaker, the smart terminal configured to: one end of the monitoring device is connected with the process layer A1 network switch through a tail cable, and the other end of the monitoring device is connected with the process layer A2 network switch through a tail cable; the circuit breaker configured to: and the intelligent terminal is electrically connected with the intelligent terminal.
Specifically, the intelligent terminal is an intelligent component, is connected with primary equipment through a cable, is connected with secondary equipment such as protection, measurement and control and the like through optical fibers, and achieves functions of measurement, control and the like of the primary equipment (such as a switch, a disconnecting link, a main transformer and the like). Wherein the control of the breaker is to control the on-off of the breaker and the isolating switch and the lifting of the voltage regulating switch. The measurement function is to collect the position of the breaker and the isolating switch, the position of the control switch and various abnormal/alarm signals. The intelligent terminal is used as a component of the intelligent transformer substation, is mainly matched with the intelligent transformation of a primary equipment circuit breaker or a transformer, and is generally grounded and installed in an intelligent terminal cabinet beside a switch field or a main transformer. In consideration of control reliability, the intelligent terminal and other devices adopt a point-to-point connection mode, so that the error link is reduced, and the cost is saved. According to the specification, the intelligent terminal is required to have 10 optical fiber Ethernet interfaces and a GOOSE network interface.
The circuit breaker is a switching device capable of closing, carrying and opening/closing a current under a normal circuit condition and closing, carrying and opening/closing a current under an abnormal circuit condition within a prescribed time. The main contacts of the circuit breaker are manually or electrically switched. After the main contact is closed, the free tripping mechanism locks the main contact at the closing position. The coil of the over-current release and the thermal element of the thermal release are connected with the main circuit in series, and the coil of the under-voltage release is connected with the power supply in parallel. When the circuit is short-circuited or seriously overloaded, the armature of the overcurrent release is attracted, so that the free release mechanism acts, and the main contact breaks the main circuit. When the circuit is overloaded, the thermal element of the thermal release heats up to bend the bimetallic strip and push the free release mechanism to act. When the circuit is undervoltage, the armature of the undervoltage release is released. The trip free mechanism is also actuated. The shunt release is used for remote control, when the shunt release works normally, the coil is powered off, and when the shunt release needs to be controlled for distance, the start button is pressed to enable the coil to be powered on. In order to realize remote control of electrical equipment in a transformer substation, firstly, a primary main wiring diagram of an intelligent oscillograph management unit of the transformer substation needs to be opened with a remote control authority function, a circuit breaker can be controlled and ordered, and a main wiring diagram refers to fig. 2.
As an example, please refer to fig. 3, in an embodiment of the present application, there is provided a remote control method for an intelligent substation, which is applied to a remote control system for an intelligent substation described in any one of the embodiments of the present application, the method includes:
step S100: and sending a remote control signal to the measurement and control device through the intelligent oscillograph according to the damage condition of the electrical equipment in the intelligent substation so as to control the electrical equipment.
Specifically, the measurement and control device is controlled to execute a preset action according to the damage degree of the electrical equipment so as to control the electrical equipment, for example, in some embodiments, the damage degree can be divided into a first level, a second level and a third level, and when the damage degree is the first level, the measurement and control device monitors the service life of the electrical equipment; when the damage degree is in a second level, the measuring and controlling device monitors the service life of the electrical equipment and sends alarm information; and when the damage degree is three levels, the measurement and control device controls the electrical equipment to stop working.
In the remote control method of the intelligent substation in the above embodiment, the intelligent recorder is connected to the station control layer network device, so that the remote monitoring function of the station side is realized. And then the measurement and control device is interconnected with the intelligent wave recorder through the station control layer equipment network, so that the remote control function of the station end is further realized.
Referring to fig. 4, the sending a remote control signal to the measurement and control device through the intelligent oscillograph includes:
step S110: implanting a remote control authority function into a management unit of the intelligent recorder;
step S120: selecting a circuit breaker corresponding to the electrical equipment through a management unit of the intelligent oscillograph;
step S130: and the breaker is switched off or switched on according to the remote control signal.
Specifically, the intelligent recorder management unit of the intelligent station is connected with a network switch of a station control layer C1 through a network cable, the measurement and control device is connected with a network of a station control layer C1 through the network cable, the network switch of a tail cable process layer A1 and A2 are connected, the intelligent terminal is connected with a process layer A1 network and an A2 network switch through tail cables, and the intelligent terminal is connected with the intelligent terminal through a cable, so that a finished communication link is formed. A switch is a network device used for the forwarding of electrical (optical) signals. It may provide an exclusive electrical signal path for any two network nodes accessing the switch. The most common switch is an ethernet switch. After receiving the data transmission instruction, any node of the switch quickly searches an address table stored in the memory, thereby confirming the network card connection position of a Media Access Control (MAC) address and then transmitting the data to the node. If the corresponding position is found in the address table, the transmission is carried out; if not, the switch will record the address for the next seek and use. The switch generally only needs to send the frame to the corresponding point, and does not need to send the frame to all nodes like a hub, so that resources and time are saved, and the data transmission rate is improved. And the central switch of the station control layer is connected with equipment such as a data communication gateway machine, a monitoring host, a comprehensive application server, a data server and the like.
Referring to fig. 5, the selecting, by the management unit of the intelligent wave recorder, the circuit breaker corresponding to the electrical device includes:
step S111: sending a selection signal to the circuit breaker;
step S112: and judging whether the selection is successful or not according to the received reply signal, wherein the reply signal is a signal generated by the measurement and control device according to the received selection signal.
Specifically, firstly, the intelligent recorder management unit selects corresponding interval breakers on a main wiring picture, remotely controls the breakers to send selection signals, transmits the selection signals to the measurement and control device through a station control layer C1 network, the measurement and control device performs logic judgment after receiving a remote control command, replies that the selection is successful, and the intelligent recorder management unit sends an execution command.
Referring to fig. 6, the circuit breaker opens or closes according to the remote control signal, including:
step S121: the intelligent terminal controls the breaker to open or close according to the GOOSE signal, and the GOSSE signal is a signal generated by the measurement and control device according to the remote control signal.
Specifically, the intelligent terminal sends GOOSE message analysis data and triggers a merging unit by using the data storage content of the intelligent terminal; the intelligent terminal acquires the abnormal work information of the secondary circuit of the intelligent substation through the hardware information processing unit, feeds back the destination of the GOOSE message, the source of the abnormal feedback information and the time interval characteristics, and confirms the correctness of the intelligent substation action behavior acquired by the high-precision time synchronization module, the message acquisition module and the switching value acquisition module to form a comprehensive performance test; the intelligent terminal is connected into an intelligent substation, a GOOSE message is analyzed, information format normalization processing is carried out, a test control command is sent to the electronic transformer through the multi-type data acquisition unit to drive secondary circuit test data analog output, the electronic transformer obtains clock time synchronization response through the high-precision time synchronization module, data fusion is carried out on the time synchronization information, the message information and the switching value information through the merging unit, the time synchronization information, the message information and the switching value information are transmitted to the intelligent terminal for verifying a test result, a sampling working method of the electronic transformer is changed according to a comprehensive test output requirement to verify a comprehensive test result of the intelligent terminal, and the message data and the switching value data are output through a switch interface.
Specifically, when the electrical equipment is seriously damaged and needs to be closed, the measurement and control device sends a GOOSE opening signal which is transmitted to the intelligent terminal through the process layer A1 and A2 networks, so that the relay is opened, the auxiliary node of the relay is conducted with an opening loop, and the intelligent terminal opens the circuit breaker through a cable transmission command, so that the electrical equipment is closed;
when the electrical equipment is not seriously damaged, the measurement and control device sends a GOOSE closing signal, the GOOSE closing signal is transmitted to the intelligent terminal through the process layer A1 and A2 networks, the relay is closed, the auxiliary node of the relay is conducted with a closing loop, the intelligent terminal closes the circuit breaker through a cable transmission command, and the electrical equipment is opened.
It should be understood that although the various steps in the flowcharts of fig. 3-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 3-6 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (10)

1. A remote control system of an intelligent substation, comprising: the system comprises station control layer network equipment and spacer layer equipment, wherein the spacer layer equipment comprises an intelligent wave recorder and a measurement and control device;
the intelligent oscillograph is in communication interconnection with the measurement and control device through the station control layer network equipment and is used for remotely and wirelessly controlling the electrical equipment in the intelligent substation.
2. The remote control system of an intelligent substation of claim 1, wherein the station level network devices comprise a station level C1 net switch and a station level C2 net switch.
3. The remote control system of the intelligent substation of claim 2, wherein the intelligent oscillograph comprises a preset number of acquisition units and a management unit;
the management unit configured to: one end of the network switch is connected with the station control layer C1 network switch through a network cable, and the other end of the network switch is connected with the station control layer C2 network switch through a network cable.
4. The remote control system of an intelligent substation of claim 3, further comprising: process layer network equipment, station control layer equipment and process layer equipment;
the process level network devices include a process level a1 mesh switch and a process level a2 mesh switch.
5. The remote control system of an intelligent substation of claim 4, wherein the instrumentation and control device is configured to: one end of the network switch is connected with the station control layer C1 network switch and the management unit through network cables, one end of the network switch is connected with the process layer A1 network switch through a tail cable, and the other end of the network switch is connected with the process layer A2 network switch through a tail cable.
6. The remote control system of an intelligent substation of claim 5, wherein the process layer equipment comprises:
a smart terminal configured to: one end of the monitoring device is connected with the process layer A1 network switch through a tail cable, and the other end of the monitoring device is connected with the process layer A2 network switch through a tail cable;
a circuit breaker configured to: and the intelligent terminal is electrically connected with the intelligent terminal.
7. A remote control method of an intelligent substation, applied to the remote control system of the intelligent substation of any one of claims 1 to 6, the method comprising:
and sending a remote control signal to the measurement and control device through the intelligent wave recorder according to the damage condition of the electrical equipment in the intelligent substation so as to control the electrical equipment.
8. The remote control method of the intelligent substation according to claim 7, wherein the sending of the remote control signal to the measurement and control device through the intelligent recorder comprises:
implanting a remote control authority function into a management unit of the intelligent recorder;
selecting a circuit breaker corresponding to the electrical equipment through a management unit of the intelligent oscillograph;
and the breaker is switched off or switched on according to the remote control signal.
9. The method for remotely controlling an intelligent substation according to claim 8, wherein the selecting, by the management unit of the intelligent recorder, the circuit breaker corresponding to the electrical device comprises:
sending a selection signal to the circuit breaker;
and judging whether the selection is successful or not according to the received reply signal, wherein the reply signal is a signal generated by the measurement and control device according to the received selection signal.
10. The method for remotely controlling an intelligent substation according to claim 9, wherein the switching off or switching on of the breaker according to the remote control signal comprises:
the intelligent terminal controls the breaker to open or close according to the GOOSE signal, and the GOSSE signal is a signal generated by the measurement and control device according to the remote control signal.
CN202111621989.4A 2021-12-28 2021-12-28 Remote control system and remote control method for intelligent substation Pending CN114498919A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115102289A (en) * 2022-07-22 2022-09-23 国网江苏省电力有限公司电力科学研究院 Control method and system for realizing uniqueness of remote control right of intelligent substation, computer readable storage medium and computing equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115102289A (en) * 2022-07-22 2022-09-23 国网江苏省电力有限公司电力科学研究院 Control method and system for realizing uniqueness of remote control right of intelligent substation, computer readable storage medium and computing equipment

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