Transforming plant intelligent electronic equipment access system

Abstract

A system used for connecting with the intelligent electronic equipment in the transformer substation, so as to realize the tele-mechanics transmission of ''four remote'' date for the equipment in the transformer substation. The system adds a communication layer between the equipment in the isolated layer and the monitored control system of the transformer substation. The communication layer adopts the communication supervisor which is constituted by the high performance embedded system. Simultaneously, the data acquisition for the site equipment RS 485channel is completed and the communication protocol conversion is finished for the Ethernet transmission. Also, both the two-equipment and the double-channel redundancy communication can be realized to improve the reliability of data acquisition and communication as well as guarantee the reliability and the real time of the electric system's tele-mechanic data transmission, so as to solve such problems as the access conflict among a plurality of the primary stations at RS 485 port of the intelligent electronic equipment in the isolated layer as well as the remote control limits exist in a plurality of the monitored control system. Therefore, an effective access method is provided for the equipment in the middle isolated layer of the transformer substation's automation system to directly go through the Ethernet for completing the monitoring function.

Description

Technical field: [0001] The invention relates to an access system device of an intelligent electronic device (IED) in substation automation, which is used for realizing the telecontrol transmission of "four remote" data of substation equipment. Background technique: [0002] Using Ethernet communication instead of serial communication to realize the telecontrol transmission of "four remotes (telemetry, remote signaling, remote control, remote adjustment)" data of substation equipment is the development direction of power system dispatching automation and remote monitoring in recent years, but the implementation methods vary. There are differences, mainly in the following categories: [0003] Method 1. The RTU completes the data collection, and the gateway completes the communication protocol conversion. Typical access is shown in Figure 1. [0004] Method 2. Through serial port server mirroring, the data communicates with the dispatcher through Ethernet. Typical access is s...

AI Technical Summary

Problems solved by technology

Among them, it is more difficult to ensure the reliability of communication in mode 1 by using redundant technology; in mode 2, the mirror image of serial port server is used to access the network, the communication rate is low, and the scalability of the access device is poor, but the implementation is relatively simple; It is difficult for the computer's system availability and mean time between failures (MTBF) to meet the requirements of high reliability and high availability of the power system.

Images