CN117118064A - Remote signal monitoring and automatic control system for power system - Google Patents
Remote signal monitoring and automatic control system for power system Download PDFInfo
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- CN117118064A CN117118064A CN202310946240.XA CN202310946240A CN117118064A CN 117118064 A CN117118064 A CN 117118064A CN 202310946240 A CN202310946240 A CN 202310946240A CN 117118064 A CN117118064 A CN 117118064A
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- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
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Classifications
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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
- H02J13/00001—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]
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- 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
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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
- H02J13/00002—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
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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
- H02J13/00006—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
- H02J13/00026—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 involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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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
- H02J13/00006—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
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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
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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
- H02J13/00036—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
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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 discloses a remote signal monitoring and automatic control system of an electric power system, which comprises: the terminal subsystem is used for collecting the data of the electric power device, encrypting the data of the electric power device and transmitting the encrypted data; the main station subsystem is connected with the terminal subsystem and used for decrypting the data of the electric power device, checking the decrypted data of the electric power device and sending a control command to the terminal subsystem according to the running requirement of the power grid so as to control the electric power device. The system gets rid of the limitations of geographic position and traditional wired transmission through wireless transmission, realizes the deep monitoring and cooperative control of the distributed new energy, and improves the management level of the power grid on the distributed new energy.
Description
Technical Field
The application belongs to the technical field of power wireless private network communication, and particularly relates to a remote signal monitoring and automatic control system of a power system.
Background
With the continuous improvement of the access proportion of the distributed new energy plant stations, the randomness of the output of the distributed new energy plant stations causes a series of problems such as local power grid voltage fluctuation, and in the existing data transmission mode, the scheduling is insufficient in real-time performance of monitoring the state information of the distributed new energy, PMS and the adopted equivalent measurement data, so that the scheduling department is insufficient in risk analysis of the new energy bearing capacity, and the impact is brought to the safe and economic operation of the regional power grid. Therefore, in order to adapt to the development of the power system, a novel power system operation control support system is constructed by applying the modern information technology, and a wireless access mode is used as an important supplement of wired access, so that the 'considerable, measurable, adjustable and controllable' of the distributed new energy is realized, the access requirements of a large number of distributed new energy sources are met while the capacity increase and micro capacity increase of the network are ensured, and reliable data support is provided for developing a cluster reactive voltage control optimization strategy of the large-scale distributed new energy sources.
Disclosure of Invention
In order to solve the above technical problems, the present application provides a remote signal monitoring and automatic control system for an electric power system, so as to solve the above problems.
In order to achieve the above object, the present application provides a remote signal monitoring and automatic control system for an electric power system, comprising:
the terminal subsystem is used for collecting the data of the electric power device, encrypting the data of the electric power device and transmitting the encrypted data;
the main station subsystem is connected with the terminal subsystem and used for decrypting the data of the electric power device, checking the decrypted power data and sending a control command to the terminal subsystem according to the power data to control the electric power device.
Preferably, the power device data includes telemetry data and telemetry signaling data;
the telemetry data includes voltage, current, power, frequency, and temperature;
the telemetry data includes a device gate signal, a trip signal, and a fuse signal.
Preferably, the terminal subsystem comprises a data acquisition module, a data encryption and decryption module, a NAT conversion module, a wireless signal module, a management configuration module, an auxiliary module and a fixing sub-module;
the data acquisition module is used for acquiring operation data of the power device;
the data encryption and decryption module is used for encrypting and decrypting the operation data and the data transmitted by the master station subsystem;
the NAT conversion module is used for converting the wireless public network IP address and the private network address;
the wireless signal module is used for sending the encrypted operation data and receiving the data transmitted by the main station subsystem;
the management configuration module is used for carrying out configuration change and initialization operation on the data acquisition module, the data encryption and decryption module, the NAT conversion module and the wireless signal module;
the auxiliary function module is used for assisting the operation of the data acquisition module, the data encryption and decryption module, the NAT conversion module, the wireless signal module and the management configuration module;
the fixing sub-module is used for fixing the data acquisition module, the data encryption and decryption module, the NAT conversion module, the wireless signal module, the management configuration module and the auxiliary module.
Preferably, the auxiliary function module comprises an alarm sub-module, an indicator light sub-module and a power supply sub-module;
the alarm sub-module is used for giving an alarm when the terminal sub-system has abnormal module operation;
the indicator lamp submodule is used for displaying the running state of the terminal subsystem;
the power supply sub-module is used for supplying power to the terminal sub-system.
Preferably, the main station subsystem comprises a communication module, a longitudinal encryption and decryption device, a server, a display and an input device;
the communication module is used for receiving the encrypted operation data and sending control signals;
the longitudinal encryption and decryption device is used for decrypting the data of the electric device and encrypting the control signal;
the server is used for storing power device data;
the display is used for displaying the power device data;
the input device is used for inputting control signals.
Preferably, the server comprises a front-end server and an acquisition server;
the acquisition server is used for storing the data of the electric power device acquired by the terminal subsystem;
the front-end server is used for retrieving the voltage and the power value in the power device data from the acquisition server.
Preferably, a forward and reverse physical isolation device is installed between the front-end server and the acquisition server, and the forward and reverse physical isolation device is used for isolating the front-end server and the acquisition server when faults occur.
Preferably, the communication between the communication module and the wireless signal module is realized through a wireless telephone card.
Preferably, the longitudinal encryption and decryption device comprises a matching unit, wherein the matching unit is used for matching the encryption protocol of the data encryption and decryption module.
Compared with the prior art, the application has the following advantages and technical effects:
according to the remote signal monitoring and automatic control system of the power system, the distributed new energy terminal can upload terminal data to the wireless safety access area of the dispatching master station in a power wireless private network mode based on the data encryption and decryption module, further the terminal data are in butt joint with the dispatching master station, flexible adjustment can be realized by receiving the master station regulation and control instruction, the limitations of geographic positions and traditional optical fiber transmission are eliminated, the deep monitoring and cooperative control of the distributed new energy are realized, and the management level of a power grid on the distributed new energy is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 is a diagram of a remote signal monitoring and automatic control system of a power system according to an embodiment of the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Example 1
As shown in fig. 1, the present application provides a remote signal monitoring and automatic control system for an electric power system, comprising:
the terminal subsystem is used for collecting the data of the electric power device, encrypting the data of the electric power device and transmitting the encrypted data;
the main station subsystem is connected with the terminal subsystem and used for decrypting the data of the electric power device, checking the decrypted power data and sending a control command to the terminal subsystem according to the power data to control the electric power device.
Wherein the terminal subsystem comprises: the system comprises a wireless signal reading module, a NAT conversion module, a data encryption and decryption module, a data acquisition module, a management configuration module, an indicator light display module, an alarm module, a power module and a fixing module.
The wireless data reading module is used for remotely transmitting analog quantities such as remote control, remote signaling, remote measurement and the like through GPRS, CDMA, 3G and 4G networks, and can improve signal quality through an antenna interface. The NAT conversion module converts the wireless public network IP address and the private network address, thereby hiding the internal management address from the outside, and mapping TCP port numbers by a port multiplexing (namely port address conversion (PAT, port Address Translation)) mode to track and record different sessions. The data encryption and decryption module carries out session negotiation through a special asymmetric encryption algorithm for electric power, and wireless data transmission encryption is realized. The terminal data acquisition module performs real-time data acquisition according to the data protocol type 101 protocol or 104 protocol, and mainly comprises remote signaling, remote measurement, remote control, electric quantity and the like. The management configuration module is convenient for carrying out configuration change and initialization operation on all the modules.
The indicator light display module: the running state of the display device comprises a signal reading state, a power state, a data acquisition state and an encryption and decryption state.
And a power supply module: and the power supply is uniformly carried out for all the modules, so that the voltage class requirements of all the modules are met.
And an alarm module: and providing sound alarm for abnormal working conditions of all modules of the device.
And (3) integrating and fixing the module: all modules are reasonably integrated and fixed, so that the requirements of heat dissipation, volume reduction, light weight and the like of the device are met as much as possible.
Further, according to the optimization scheme, after the data acquisition module acquires the data, the data are converted into hexadecimal data for encryption, so that the encryption workload and the space required by data transmission and storage can be effectively reduced.
The main station subsystem comprises a communication module, a longitudinal encryption and decryption device, a server, a display and an input device;
the communication module is used for receiving the encrypted operation data and sending control signals;
the longitudinal encryption and decryption device is used for decrypting the data of the electric device and encrypting the control signal;
the server is used for storing the data of the power device;
the display is used for displaying the power device data;
the input device is used for inputting control signals.
Further optimizing the scheme, wherein the server comprises a front-end server and an acquisition server;
the acquisition server is used for storing the data of the electric power device acquired by the terminal subsystem;
the front-end server is used for retrieving the voltage and the power value in the power device data from the acquisition server.
The front-end server only collects voltage and power values in the data of the power device and is used for regulating and controlling the power generation condition, other data are processed through the collecting server of the power station, when a problem occurs, the power station processes, and the problem that a dispatching unit for installing the front-end server is slow in sending control instructions due to overlarge data quantity is prevented.
And in the further optimized scheme, a forward and reverse physical isolation device is arranged between the front-end server and the acquisition server, and the forward and reverse physical isolation device is used for isolating the front-end server and the acquisition server when faults occur.
Further optimizing scheme, communication between communication module and the wireless signal module is realized through wireless telephone card.
Further optimizing scheme, the longitudinal encryption and decryption device comprises a matching unit, wherein the matching unit is used for matching the encryption protocol of the data encryption and decryption module. And in the early stage of construction, a plurality of encryption protocols are input into the longitudinal encryption and decryption device, the encryption protocols are classified into priority levels, when equipment is added in the later stage, the longitudinal encryption and decryption device is matched with the data encryption and decryption module, and the encryption protocol with the highest priority level is selected according to the priority level, so that the problem that communication cannot be performed due to different protocols when equipment is added in the later stage is prevented.
Example two
Taking single link transmission of the distributed new energy terminal accessing the wireless safety access area of the dispatching master station as an example, the corresponding IP address field is divided according to the actual service requirement, and the IP address field comprises a terminal service address, a device outlet route address, a wireless public network address, a data encryption and decryption module address and the like. And at the terminal side, inserting the communication telephone card of the operator into a wireless signal reading module of the device, acquiring a wireless communication signal issued by the master station, and setting a public network interface routing address of the device for uploading data information at the terminal side. And converting the port address of the public network IP address into the private network address of the data encryption and decryption module through the NAT conversion module, so as to realize the port mapping of the TCP service. The data encryption tunnel and the strategy based on the electric power special encryption algorithm rsa or sm2 are added through the management configuration module, the addresses of the local end and the opposite end of the tunnel are respectively the addresses of the terminal side encryption and decryption module and the address of the dispatching master station side encryption device, and the addresses of the local end and the opposite end of the strategy are respectively the terminal side service address and the dispatching master station side wireless acquisition server address. At the system side of the dispatching master station, a data channel added to a distributed new energy terminal is provided, the channel address is a terminal service address, meanwhile, a data encryption tunnel and a strategy based on a power special encryption algorithm rsa or sm2 are added in a longitudinal encryption device at the master station side, the addresses of the local end and the opposite end of the tunnel are respectively a longitudinal encryption device address of the master station and a wireless telephone card address, and the addresses of the local end and the opposite end of the strategy are respectively a wireless acquisition server address at the dispatching master station side and a service address at the terminal side. When the distributed terminal uploads data, the data acquisition module sends acquired terminal related data to the data encryption and decryption module to encrypt and decrypt data messages, the encrypted messages are sent to the wireless signal reading module through NAT address conversion, the encrypted messages are transmitted to the wireless acquisition server of the dispatching master station through the wireless network of an operator, and finally the butt joint with the dispatching master station system is realized through the forward and reverse isolation device. When the dispatching master station issues a dispatching instruction, the dispatching instruction is also required to be transmitted to the distributed new energy terminals through decryption of the data message, and the working state of the data transmission process can be seen through the indicator light display module. Access method as shown, the red part is the wireless access device.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (9)
1. A remote signal monitoring and automatic control system for an electrical power system, comprising:
the terminal subsystem is used for collecting the data of the electric power device, encrypting the data of the electric power device and transmitting the encrypted data;
the main station subsystem is connected with the terminal subsystem and is used for decrypting the data of the power device, checking the decrypted power data and sending a control command to the terminal subsystem to control the power device.
2. The remote signal monitoring and automatic control system for electric power system according to claim 1, wherein,
the power device data includes telemetry data and telemetry data;
the telemetry data includes voltage, current, power, frequency, and temperature;
the telemetry data includes a device gate signal, a trip signal, and a fuse signal.
3. The remote signal monitoring and automatic control system for electric power system according to claim 1, wherein,
the terminal subsystem comprises a data acquisition module, a data encryption and decryption module, a NAT conversion module, a wireless signal module, a management configuration module, an auxiliary module and a fixing sub-module;
the data acquisition module is used for acquiring operation data of the power device;
the data encryption and decryption module is used for encrypting and decrypting the operation data and the data transmitted by the master station subsystem;
the NAT conversion module is used for converting the wireless public network IP address and the private network address;
the wireless signal module is used for sending the encrypted operation data and receiving communication data of the main station subsystem;
the management configuration module is used for carrying out configuration change and initialization operation on the data acquisition module, the data encryption and decryption module, the NAT conversion module and the wireless signal module;
the auxiliary function module is used for assisting the operation of the data acquisition module, the data encryption and decryption module, the NAT conversion module, the wireless signal module and the management configuration module;
the fixing sub-module is used for fixing the data acquisition module, the data encryption and decryption module, the NAT conversion module, the wireless signal module, the management configuration module and the auxiliary module.
4. The remote signal monitoring and automatic control system for electric power system according to claim 3, wherein,
the auxiliary function module comprises an alarm sub-module, an indicator light sub-module and a power supply sub-module;
the alarm sub-module is used for giving an alarm when the terminal sub-system has abnormal module operation;
the indicator lamp submodule is used for displaying the running state of the terminal subsystem;
the power supply sub-module is used for supplying power to the terminal sub-system.
5. The remote signal monitoring and automatic control system for electric power system according to claim 1, wherein,
the main station subsystem comprises a communication module, a longitudinal encryption and decryption device, a server, a display and an input device;
the communication module is used for receiving the encrypted operation data and sending control signals;
the longitudinal encryption and decryption device is used for decrypting the data of the electric device and encrypting the control signal;
the server is used for storing power device data;
the display is used for displaying the power device data;
the input device is used for inputting control signals.
6. The remote signal monitoring and automatic control system for electric power system according to claim 5, wherein,
the server comprises a front-end server and an acquisition server;
the acquisition server is used for storing the data of the electric power device acquired by the terminal subsystem;
the front-end server is used for retrieving the voltage and the power value in the power device data from the acquisition server.
7. The remote signal monitoring and automatic control system for electric power system according to claim 6, wherein,
and a forward and reverse physical isolation device is arranged between the front-end server and the acquisition server and is used for isolating the front-end server and the acquisition server when faults occur.
8. The remote signal monitoring and automatic control system for electric power system according to claim 5, wherein,
the communication between the communication module and the wireless signal module is realized through a wireless telephone card.
9. The remote signal monitoring and automatic control system for electric power system according to claim 5, wherein,
the longitudinal encryption and decryption device comprises a matching unit, wherein the matching unit is used for matching an encryption protocol of the data encryption and decryption module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310946240.XA CN117118064A (en) | 2023-07-31 | 2023-07-31 | Remote signal monitoring and automatic control system for power system |
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| CN202310946240.XA CN117118064A (en) | 2023-07-31 | 2023-07-31 | Remote signal monitoring and automatic control system for power system |
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