Wireless automatic transmission device and method for substation automation system

Abstract

The invention relates to a wireless automatic transmission device and method for a substation automation system, and the device comprises a wireless automatic transmission host and a wireless automatic transmission slave, and the wireless automatic transmission host is responsible for receiving a signal of a station level and wirelessly transmitting a transmission trigger command according to a monitoring automation point table and user settings; the wireless automatic transmission slave is responsible for receiving a wireless transmission trigger command of the wireless automatic transmission host, sending remote signaling, remote measurement and remote control trigger signals to the intelligent terminal, the merging unit or the measurement and control device according to the command content, and triggering the merging unit or the measurement and control device to output corresponding remote signaling, remote measurement and remote control values to a station level network; and the wireless automatic transmission host realizes a closed-loop actual transmission test by receiving a station level network signal, and synchronously checks whether the information received by the monitoring background machine is correct or not, so that the actual transmission work of an automatic system is completed. Actual transmission work is flexibly and efficiently completed, labor input is reduced, working efficiency is improved, and loop correctness and completeness of an automatic system are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of substation automation equipment testing technology, specifically relating to a wireless automatic transmission device and method for a substation automation system. Background Technology

[0002] During the commissioning and acceptance phases of substation automation systems, actual transmission of telemetry, telesignaling, and remote control functions is required to ensure the correctness and integrity of related circuits. This actual transmission necessitates multiple personnel communicating and coordinating via walkie-talkies at the substation's primary and secondary equipment and monitoring backend, resulting in significant manpower investment, extremely low efficiency, and the need for multiple actual transmission operations during commissioning, acceptance, and remote control point-to-point phases. Actual transmission work accounts for over 50% of the substation commissioning workload. With the accelerating pace of substation construction, multiple sets of actual transmission operations often need to be performed simultaneously. However, due to the limited number of monitoring backends (typically only two, one for actual transmission and one for fixing defects), multiple transmission operations become extremely difficult.

[0003] Therefore, there is an urgent need on site for a device and method that can realize the automatic actual transmission of the monitoring automation system. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wireless automatic transmission device and method for substation automation systems, which can flexibly and efficiently complete actual transmission work, reduce manual input, improve work efficiency, and ensure the correctness and integrity of the circuit of the automation system.

[0005] The technical problem solved by this invention is achieved through the following technical solution: A wireless automatic drive device for a substation automation system includes a wireless automatic drive host and a wireless automatic drive slave. The wireless automatic drive host is responsible for receiving signals from the station control layer and wirelessly sending drive trigger commands according to the monitoring automation point list and user settings. The wireless automatic drive slave is responsible for receiving the wireless drive trigger commands from the wireless automatic drive host, sending remote signaling, remote measurement, and remote control trigger signals to a smart terminal, merging unit, or measurement and control device according to the command content, and triggering it to output the corresponding remote signaling, remote measurement, and remote control values ​​to the station control layer network. The wireless automatic drive host realizes closed-loop actual drive testing by receiving signals from the station control layer network, and synchronously checks whether the information received by the monitoring back-end host is correct, thereby completing the actual drive work of the automation system. Furthermore, the wireless automatic transmission host includes a wireless processing unit, a data processing unit, an interface unit, a power supply unit, and a human-machine interaction unit. The wireless processing unit is responsible for wirelessly sending commands from the data processing unit to the wireless automatic transmission slave unit. The data processing unit parses SCD files or monitoring background library files to obtain the measurement and control datasets of the intelligent terminal and merging unit, or the specific descriptions of the switching quantities of the measurement and control device, and obtains station control layer network or merging unit SV and intelligent terminal GOOSE data, thereby realizing segmented verification and overall automatic transmission. The interface unit is responsible for connecting with the station control layer network, merging unit, and intelligent terminal. The power supply unit uses battery power to provide a stable power supply. The human-machine interaction unit is responsible for displaying data and parameters, and setting transmission modes and files for human-machine operation.

[0006] Furthermore, the wireless automatic drive slave unit includes a wireless processing unit, an interface unit, a switch trigger unit, an AC trigger unit, a power supply unit, and a human-machine interface unit. The wireless processing unit is responsible for receiving wireless trigger commands and generating trigger signals based on the commands. The switch trigger unit outputs the input potential required by the corresponding signal from the intelligent terminal or the measurement and control device based on the trigger signal, thereby triggering the transmission of remote signaling signals to the station control layer network for the monitoring backend and the wireless automatic drive host to determine whether the remote signaling signals are correct. The AC trigger unit outputs AC voltage and AC current to the AC input terminal block of the merging unit or the measurement and control device based on the trigger signal, thereby triggering the transmission of telemetry signals to the station control layer network for the monitoring backend and the wireless automatic drive host to determine whether the telemetry signals are correct. The remote control signal transmission allows the host to select the object or interval to be remotely controlled. Based on the user's selection and settings, the host automatically simulates the monitoring backend to send remote control commands, and automatically determines whether the remote control is correct by monitoring the position changes of the remotely controlled object through the station control layer network. The power supply unit uses a lithium battery to provide a stable power supply, and the human-machine interface unit is responsible for setting device parameters, viewing the wireless command status and parameters, and viewing the current status of the slave unit.

[0007] A wireless automatic transmission method for a substation automation system, employing the aforementioned transmission device, comprises the following steps: S1. First-stage transmission: During the single-interval commissioning phase, the wireless automatic transmission host is connected to the merging unit, intelligent terminal, or measurement and control device to receive and analyze the data sent by the above devices in real time. Then, the commissioning personnel perform actual transmission of remote signaling and telemetry to check whether the corresponding signal changes, correspondences, and descriptions in the wireless automatic transmission host are correct, check whether the secondary cable circuit is complete and correct, and complete the correct transmission of the actual action of the signal to the output of the merging unit, intelligent terminal, or measurement and control device. S2. Second stage of transmission: Connect the above-mentioned wireless automatic transmission slave unit to the merging unit, intelligent terminal or measurement and control device, and connect the master unit to the station control layer network. Then, through the cooperation of the wireless automatic transmission master unit and the wireless automatic transmission slave unit, complete the closed-loop automatic test of remote signaling, remote control and telemetry signals to the monitoring back-end machine.

[0008] The advantages and beneficial effects of this invention are as follows: 1. This invention can avoid the communication costs of personnel, realize automatic transmission, avoid the construction difficulties caused by the limited number of monitoring back-end machines, and ensure the correctness and integrity of the automation system loop.

[0009] 2. This invention enables wireless automatic transmission in automated systems, avoiding the laying of additional cables, reducing labor and communication costs, and improving transmission efficiency.

[0010] 3. The segmented cross-drive method proposed in this invention ensures the integrity of the remote control, telemetry, and remote signaling circuits while providing an effective and feasible method for realizing automatic transmission. It effectively improves work efficiency, reduces the substation commissioning period and the labor intensity of technical personnel, and plays an important role in promoting the quality and efficiency of substation construction.

[0011] 4. This invention is of great significance for improving the automation, digitalization and intelligence of substation commissioning technology, and promotes the leapfrog development of commissioning technology from "wired" to "wireless".

[0012] 5. The method of the present invention involves cross-devices, namely merging units, intelligent terminals or measurement and control devices. Therefore, there are no dead zones in the relevant circuits, which can realize automatic transmission while ensuring the correctness and integrity of the circuits.

[0013] 6. The wireless network used in this invention combines public and private networks to achieve wireless networking and data transmission, which can adapt to complex substation environments and ensure stable and reliable wireless communication. It can be applied to the automatic drive operation of automation systems in conventional substations, intelligent substations, and new-generation independently controllable substations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the wireless automatic transmission host of the present invention; Figure 2 This is a schematic diagram of the wireless automatic transmission slave device of the present invention; Figure 3 This is a schematic diagram of the first stage of transmission in this invention; Figure 4 This is a schematic diagram of the second stage of transmission in this invention. Detailed Implementation

[0015] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0016] This invention proposes a wireless automatic drive device for a substation automation system. Its innovation lies in comprising a wireless automatic drive master unit and a wireless automatic drive slave unit. The master unit receives signals from the station control layer and wirelessly sends drive trigger commands based on the monitoring automation point list and user settings. The slave unit receives the wireless drive trigger commands and, according to the command content, sends remote signaling, telemetry, and remote control trigger signals to intelligent terminals, merging units, or measurement and control devices, triggering these devices to output corresponding remote signaling, telemetry, and remote control values ​​to the station control layer network. Then, the master unit performs a closed-loop actual drive test by receiving signals from the station control layer network. Simultaneously, it can check the accuracy of the information received by the monitoring backend unit, thus completing the actual drive operation of the automation system.

[0017] like Figure 1 As shown, the wireless automatic drive host includes: a wireless processing unit, a data processing unit, an interface unit, a power supply, and a human-machine interaction unit. The wireless processing unit is responsible for wirelessly sending commands from the data processing unit to the slave devices. The data processing unit can parse SCD files or monitoring backend library files to obtain the measurement and control datasets from the intelligent terminal and merging unit, or the specific descriptions of the switching quantities of the measurement and control device, and obtain data from the station control layer network or the SV data of the merging unit and the GOOSE data of the intelligent terminal, thereby realizing segmented verification and overall automatic drive. The interface unit is responsible for connecting to the station control layer network, the merging unit, and the intelligent terminal. The power supply unit uses battery power to provide a stable power supply to the device. The human-machine interaction unit is responsible for displaying data and parameters, setting drive modes and files, and other human-machine operations.

[0018] like Figure 2As shown, the wireless automatic drive slave unit includes a wireless processing unit, an interface unit, a switch trigger unit, an AC trigger unit, a power supply unit, and a human-machine interface unit. The wireless processing unit receives wireless trigger commands and generates trigger signals accordingly. The switch trigger unit outputs the required input potential for the corresponding signal from the intelligent terminal or monitoring and control device based on the trigger signal, thereby triggering the transmission of remote signaling signals to the station control layer network for the monitoring backend and the wireless automatic drive host to determine the correctness of the remote signaling. The AC trigger unit outputs AC voltage and AC current to the AC input terminal block of the merging unit or monitoring and control device based on the trigger signal, thereby triggering the transmission of telemetry signals to the station control layer network for the monitoring backend and the wireless automatic drive host to determine the correctness of the telemetry signals. Remote control signal transmission allows the host to select the object or interval to be remotely controlled. Based on the user's selection and settings, the host automatically simulates the monitoring backend to send remote control commands, and automatically determines the correctness of the remote control by monitoring the position changes of the remotely controlled object through the station control layer network. The power supply unit uses a lithium battery power supply scheme, improving the flexibility and portability of the device and providing a stable power supply for its operation. The human-machine interaction unit is responsible for setting device parameters, viewing wireless command status and parameters, and viewing the current status of the slave device.

[0019] This invention proposes a wireless automatic transmission method for substation automation systems, and a segmented cross-drive method for the automation system. This method avoids communication costs associated with personnel, achieves automatic transmission, avoids construction difficulties limited by the number of monitoring back-end units, and ensures the correctness and integrity of the automation system circuits. The steps of the method are as follows: S1, First Stage, such as Figure 3 As shown, during the single-interval commissioning phase, the aforementioned host is connected to the merging unit, intelligent terminal, or measurement and control device to receive and analyze data sent by these devices in real time. Then, the commissioning personnel perform actual remote signaling and telemetry transmission, checking the corresponding signal shifts, correspondences, and descriptions in the host for accuracy, and verifying the integrity and correctness of the secondary cable loops. This phase ensures the correct transmission of the actual signal action to the output of the merging unit, intelligent terminal, or measurement and control device.

[0020] S2, the second stage, such as Figure 4 As shown, the slave unit is connected to the merging unit, intelligent terminal, or measurement and control device, and the master unit is connected to the station control layer network. Then, through the cooperation of the master and slave units, a closed-loop automatic test of remote signaling, remote control, and telemetry signals to the monitoring backend machine is completed. The work content of the above two stages involves overlapping devices, namely the merging unit, intelligent terminal, or measurement and control device. Therefore, there are no dead zones in the relevant loops, which can achieve automatic transmission while ensuring the correctness and integrity of the loop.

[0021] This invention employs a wireless network that combines public and private networks to achieve wireless networking and data transmission. This approach adapts to complex substation environments and ensures stable and reliable wireless communication. It is applicable to the automatic drive operations of automation systems in conventional substations, smart substations, and next-generation autonomously controllable substations.

[0022] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A wireless automatic transmission device for a substation automation system, characterized in that: The system includes a wireless automatic drive master unit and a wireless automatic drive slave unit. The wireless automatic drive master unit is responsible for receiving signals from the station control layer and wirelessly sending drive trigger commands according to the monitoring automation point list and user settings. The wireless automatic drive slave unit is responsible for receiving the wireless drive trigger commands from the wireless automatic drive master unit, sending remote signaling, remote measurement, and remote control trigger signals to the intelligent terminal, merging unit, or measurement and control device according to the command content, and triggering it to output the corresponding remote signaling, remote measurement, and remote control values ​​to the station control layer network. The wireless automatic drive master unit realizes closed-loop actual drive testing by receiving signals from the station control layer network, and synchronously checks whether the information received by the monitoring back-end unit is correct, thereby completing the actual drive work of the automation system.

2. The wireless automatic transmission device for a substation automation system according to claim 1, characterized in that: The wireless automatic drive host includes a wireless processing unit, a data processing unit, an interface unit, a power supply unit, and a human-machine interaction unit. The wireless processing unit is responsible for wirelessly sending commands from the data processing unit to the wireless automatic drive slave unit. The data processing unit parses SCD files or monitoring background library files to obtain the measurement and control datasets of the intelligent terminal and merging unit, or the specific descriptions of the switching quantities of the measurement and control device, and obtains station control layer network or merging unit SV and intelligent terminal GOOSE data, thereby realizing segmented verification and overall automatic drive. The interface unit is responsible for connecting with the station control layer network, merging unit, and intelligent terminal. The power supply unit uses battery power to provide a stable power supply. The human-machine interaction unit is responsible for displaying data and parameters, and setting the drive mode and files for human-machine operation.

3. The wireless automatic transmission device for a substation automation system according to claim 1, characterized in that: The wireless automatic drive slave unit includes a wireless processing unit, an interface unit, a switch trigger unit, an AC trigger unit, a power supply unit, and a human-machine interface unit. The wireless processing unit receives wireless trigger commands and generates trigger signals based on these commands. The switch trigger unit outputs the required input potential for the corresponding signal from the intelligent terminal or monitoring and control device based on the trigger signal, thereby triggering the transmission of remote signaling signals to the station control layer network for the monitoring backend and the wireless automatic drive host to determine the correctness of the remote signaling signal. The AC trigger unit outputs AC voltage and AC current to the AC input terminal block of the merging unit or monitoring and control device based on the trigger signal, thereby triggering the transmission of telemetry signals to the station control layer network for the monitoring backend and the wireless automatic drive host to determine the correctness of the telemetry signals. Remote control signal transmission involves the host selecting the object or interval to be remotely controlled. Based on the user's selection and settings, the host automatically simulates the monitoring backend to send remote control commands, and automatically determines the correctness of the remote control by monitoring the position changes of the remotely controlled object through the station control layer network. The power supply unit uses a lithium battery to provide a stable power supply. The human-machine interface unit is responsible for setting device parameters, viewing the wireless command status and parameters, and checking the current status of the slave unit.

4. A wireless automatic transmission method for a substation automation system, characterized in that: The method using the transmission device as described in any one of claims 1 to 3 comprises the following steps: S1. First-stage transmission: During the single-interval commissioning phase, the wireless automatic transmission host is connected to the merging unit, intelligent terminal, or measurement and control device to receive and analyze the data sent by the above devices in real time. Then, the commissioning personnel perform actual transmission of remote signaling and telemetry to check whether the corresponding signal changes, correspondences, and descriptions in the wireless automatic transmission host are correct, check whether the secondary cable circuit is complete and correct, and complete the correct transmission of the actual action of the signal to the output of the merging unit, intelligent terminal, or measurement and control device. S2. Second stage of transmission: Connect the above-mentioned wireless automatic transmission slave unit to the merging unit, intelligent terminal or measurement and control device, and connect the master unit to the station control layer network. Then, through the cooperation of the wireless automatic transmission master unit and the wireless automatic transmission slave unit, complete the closed-loop automatic test of remote signaling, remote control and telemetry signals to the monitoring back-end machine.

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