Research On Renovation Of Monitoring System In 500kV LuoDong Substation

500kV LuoDong substation is the major substation of the "west-to-east" power transmission. Luo Dong stood the original monitoring system is part of the realization of the automation of computer management, is a conventional semi integrated automation substation.This mode of monitoring system operation exists, troublesome debugging, maintenance workload, poor sensitivity and function expansion, it can not meet the requirement of safe and reliable operation . Equipment is complex, repetitive, using a large number of cables, and covers an area of a screen cabinet.It's imperative to reform the monitoring system of LuoDong to microcomputer comprehensive automation.Substation integrated automation system in the main structure can be divided into: centralized, decentralized, distributed hierarchical, distributed. The distributed hierarchical structure model covers an small area , independent of the device function, flexible configuration, high reliability, and convenient debugging and commissioning of step by step, satisfy the inverse power transmission requirements, in favor of factory power system operation, maintenance and repair, Luo Dong station monitoring system suitable to the structure model. Comparison of integrated automation system in communication mode, Ethernet's bandwidth, scalability, reliability, economy, compatibility and other advantages become integrated automation system of substation communication network development direction. The monitoring system of LuoDong adopts the communication mode of industrial Ethernet bar, and Dual Ethernet scheme monitoring system to ensure that each layer of communication reliability.In this paper, combined with the actual situation of the station of Luo Dong, this paper discusses the control system hardware, software configuration and functions of the system, after the transformation of the system the functions, stability, reliability become better.Because in the transformation process the original latching means cause damage, and the new transformation part will loss the interlocking function. Beform the Transformation We set up a set of independent microcomputer five prevention system, According to the actual situation of Luo Dong station ,we write complete independence of the interlocking logic, to ensure the transformation which does not occur during a certain interval or a device without atresia operation situation.500kV Luo Dong station monitoring project of long period, dangerous points, risk is big, We analyzed the risk of substation, puts forward the reasonable construction plan, feasible reform plan and effective safety control measures,According to the applying situation, this paper puts forward the construction safety of rationalization proposals, accomplish beforehand precaution, fulfil risk pre-control measures, strengthen supervision, to remove the management blind area, to reach the Luo Dong station monitoring system renovation project, controllability, controllable and in control.