Synchronous communication method of mirror images for self organization information of safety and stability control device of electric network

Abstract

The invention relates to a synchronous communication method of mirror images for self organization information of a safety and stability control device of an electric network, which belongs to the automatic field of power systems. When data are sent, a CPU is used for firstly judging the priorities of exchange data and writing the priorities into a priority sending buffering zone which corresponds to an FPGA; a transmitting module in the FPGA is used for sequencing the priorities of data frames, extending frame address information and executing CRC check and 8b10b coding transmission; when the data are received, a receiving module in the FPGA is used for executing 8b10b decoding and CRC check of the received data; and after the data pass the check, the received data are stored in the sameaddress as a transmitting address according to the frame address information for realizing opposite data mirror images. The method can meet the requirements of reliable high-speed and large-capacity communication between modules of the safety and stability control device and between devices.

Description

Technical field: [0001] The invention belongs to the technical field of electric power systems and automation thereof. More precisely, the invention relates to a self-organized mirror image synchronization communication method for information of a power grid safety and stability control device. Background technique: [0002] The main task of the power grid security and stability control device is to take corresponding measures according to the current operating state of the power grid to ensure the safety and stability of the power grid under accident conditions. With the establishment of the regional interconnected power grid, the safety and stability control device has developed from the previous centralized structure to a layered distributed structure. Different modules in the device perform different functions respectively; the safety and stability control device of the regional power grid is distributed in Different plants and stations carry out information collection, ...

AI Technical Summary

Problems solved by technology

[0004] At present, there are mainly two communication methods between the safety and stability control device modules. One is based on dual-port RAM communication. The disadvantage of this method is that the hardware is complex and the anti-interference is poor.

The second method is based on traditional fieldbus methods, such as 422, 485, CAN (Controller Area Network) bus methods, etc., but these methods require CPU intervention for sending and receiving, and the speed is low, which cannot meet the real-time communication of large-capacity data requirements

The communication between devices is mainly converted into signals conforming to the ITU G.703 standard through ordinary serial communication, and connected to the power communication network through SDH (Synchronous Digital Hierarchy, synchronous digital series) optical transmission equipment, the communication rate is not high and the efficiency is low , poor reliability

Images