Safety control method and system for overhead line system isolating switch monitoring system

Abstract

The invention relates to a safety control method and system for an overhead line system isolating switch monitoring system. A digital communication remote control locking function avoids a possibilitythat an overhead line system isolating switch malfunctions due to an unsatisfactory field operation condition. The remote control locking function is introduced by a centralized monitoring device ona centralized monitoring screen. The presence or absence of a blocking signal is identified by a locking entry point opening and closing combination. The centralized monitoring device sends a virtuallocking remote signal point status to an isolating switch RTU (Remote Terminal Unit) through a GOOSE network, dispatches and sends an unlocking signal, and achieves directly unlocking in order that the RTU is not controlled by the locking signal, thereby greatly reducing the probability of maloperation. The centralized monitoring device, dispatching, and the comprehensive background are all in parallel position, and all communicate with the isolating switch RTU directly, and the isolating switch RTU is a direct control RTU device. The scheme of reducing fault points can prevent the isolating switch operation failure and telecommand false alarm.

Description

technical field [0001] The invention relates to the field of a catenary electric isolating switch monitoring system in the railway industry, in particular to a safety control method and system for a catenary isolating switch monitoring system. The invention supports GOOSE input and output functions, and realizes digital communication locking and screen control functions through the IEC61850 protocol. Background technique [0002] The catenary isolating switch is one of the important electrical equipment of the electrified railway power supply system, mainly used for catenary fault removal, segmental power outage maintenance, segmental power outage operation and changing power supply operation mode, etc. In order to make the catenary isolating switch operate reliably and ensure the safety of electrified railway operation, it is very necessary to incorporate some important catenary isolating switches into the telecontrol monitoring system. At present, the remote control of ca...

AI Technical Summary

Problems solved by technology

At present, the remote control of catenary isolating switch generally adopts the optical fiber communication monitoring scheme, that is, the hierarchical structure scheme of power supply telecontrol system - substation monitoring master station - local monitoring unit - isolating switch electric operating mechanism, but in actual operation In the process, abnormal phenomena such as misoperation, refusal to operate, and false alarm have occurred many times

Images