Method for implementing Ethernet transceiver of intelligent control equipment of digitized transformer substation

Abstract

The invention relates to a method for implementing an Ethernet transceiver of intelligent control equipment and a digitized transformer substation, which comprises the following steps: pre-analyzing a received IEC61850-9-2 message by the Ethernet transceiver, taking out a part processed by the CPU (central processing unit) of the intelligent control equipment directly, thus, alleviating workload for analyzing CPU data of the intelligent control equipment. According to method provided by the invention, when the intelligent control equipment needs to send a message to exterior, the intelligent control equipment only needs to provide a data part of a data package; the Ethernet transceiver implements the whole package work of network data messages; and a method for implementing the Ethernet transceiver and alleviating CPU load of the intelligent control equipment is provided.

Description

Technical field [0001] The invention belongs to the field of communication in power systems, and is particularly suitable for intelligent control equipment for digital substations. Background technique [0002] With the development of intelligent substation technology, especially the widespread application of electronic transformers, it has greatly promoted the transformation of the architecture and technology of substation automation systems. The traditional functions of data acquisition, data processing, and control command output are integrated. The architecture of the control equipment gradually changes to a new architecture that disperses the functions of data collection, data processing and control command execution from a geographical location, and uses optical fiber industrial Ethernet as a data corridor between each other. This architecture can simplify the configuration of the data acquisition system, improve the system's anti-interference performance, and also greatly ...

AI Technical Summary

Problems solved by technology

However, the application of this distributed architecture has brought new challenges to the Ethernet technology. On the one hand, due to the scattered arrangement of the data acquisition system, the whole system requires all data to be sampled and output synchronously, which requires synchronous data transmission via the Ethernet medium. The data can be sent at a precise interval and equal intervals, but the general-purpose Ethernet transceiver cannot realize this function, resulting in different delays in the data sending time, which will eventually lead to the data phase deviation of the data processing unit and even cause data loss. step, so it is necessary to increase the synchronous sending function, especially in the case of a single data source and multiple data processing units, it is especially required that the data sent by the data source to different data processing units be strictly synchronized; on the other hand, it is widely used in intelligent substations The IEC61850-9-2 standard protocol is used as the transmission protocol for process layer sampling data. If a processor is used to implement the protocol, since the protocol message encoding and decoding protocol will take up a large amount of processor logic operation time, as a single device needs to expand With the increase of process layer network, the number of encoding and decoding required by a single processor is greatly increased, and it is difficult to complete the encoding and decoding of a large amount of data. At the same time, due to the huge amount of data transmitted between the processor and the Ethernet transceiver, it will also seriously affect the data. Therefore, it is necessary to move the IEC61850-9-2 codec function to the network transceiver, and use hardware parallel codec to improve data processing efficiency, thereby improving the data processing capability of the device

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