Method for suppressing redundant data in network by relay protection device

Abstract

The invention discloses a method for a relay protection device to suppress network redundant data in a substation. The method is to add a hook function and a network monitoring task into the communication management program of the relay protection device. When a network data packet in the substation is sent , the hook function will obtain the corresponding data packets, analyze the data packets according to the rules for suppressing redundant data, and pass the results to the network monitoring task. According to the analysis results, the network monitoring task will make full use of the characteristics of network data layered processing to perform multi-level suppression operations, avoiding the influence of relay protection devices on other collection, monitoring and protection due to the large amount of redundant data on the substation network. The conventional function, avoiding the relay protection device from entering the state of false crash. The realization of the method of the present invention has universality, and the Ethernet MAC chip with the highest value that can adjust the interrupt frequency can not be replaced for the device, which not only reduces the hardware cost but also saves the maintenance cost of replacing the existing relay protection device in a large range.

Description

technical field [0001] The invention belongs to the field of electric power electronics and relay protection of electric power systems, in particular to a method for realizing the suppression of network redundant data by a relay protection device, and is a safe method for multi-level suppression of network redundant data by a relay protection device. Background technique [0002] During the engineering use of relay protection and other devices, the relay protection equipment in the substation adopts the Ethernet network to interconnect with equipment such as the monitoring background, fault information sub-station, and telecontrol master station. A large amount of network redundant data caused by the failure of the switch makes the relay protection equipment frequently passively respond to the redundant data on the network, and cannot perform other conventional functions such as collection, monitoring and protection. [0003] Therefore, there is a need for a method. In the c...

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Problems solved by technology

[0006] 2. The hardware cost of enhanced network chips or FPGAs is much higher than before

[0007] 3. After replacing the hardware, it involves the rewriting and debugging of the new chip driver and FPGA software, and the software cost and time cost increase sharply

[0008] 4. The original product cannot be used, and the device needs to be replaced, and the impact of software upgrade will be much smaller

[0009] 5. Using general software solutions, the network can only be turned on and off at the same time. It does not make full use of the characteristics of network data layered processing for multi-level suppression, and does not both suppress redundant data and maintain traffic to the maximum extent.

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