Treating method of fault information system sub-station for overhauling state of protective relaying device

Abstract

The invention provides a treating method of a fault information system sub-station for overhauling state of a protective relaying device, comprising the steps of installing a plurality of hard pressure pads on a sub-station cabinet with each pressure pad corresponding to one space, manually inputting the pressure pads corresponding to spaces when the device is overhauling, manually outputting the pressure pads corresponding to spaces when the overhauling is finished, and sending a state information of pressure pad to the sub-station in a communication mode by connecting to a device with a function of collecting input quantity, for identifying whether each space is at overhauling state. The sub-station identifies the protective relaying device at overhauling state according to the information of pressure pad. The method is complete and useful, perfects the content classification of information on the protective relaying device, solves the problem that the domestic protective relaying fault information management system can not identify the overhauling state and the function at running state of the protective relaying device, is beneficial for the professionals of relay protection to analyze the protecting action, and promotes the integrate practicability of the system.

Description

technical field [0001] The invention is applied in the field of electric power automation of electric power system, especially in the direction of power grid relay protection and fault information processing system (hereinafter referred to as fault information system). Background technique [0002] With the development of computer technology and network technology and the improvement of substation automation level, relay protection fault information processing system has been built in many areas in China, but the road to practical application is difficult due to the complexity of the system. All localities are exploring their own practical solutions. [0003] The fault information system mainly focuses on the information of relay protection and fault recorder, especially the various signals, status and wave recording data when a fault occurs. [0004] In substations, the maintenance and debugging of equipment is one of the routine tasks. During the overhaul, in addition to...

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Problems solved by technology

[0012] (1) Due to the different processing methods of each manufacturer’s protection when the maintenance platen is put into operation, many manufacturers adopt the processing method of not sending any information after putting it into operation, resulting in the substation being unable to obtain the maintenance state information, which does not meet the actual application requirements

[0013] (2) This solution will also bring about a difficult problem in practical application: the older type of protection device without inspection pressure plate cannot be compatible with this solution

[0026] (1) Many master stations are not strict with the quality description, and need master station software support, otherwise it is not conducive to promotion

[0027] (2) There are some extended information in the master-substation communication protocol in each region, and the data in this information often does not contain quality description bytes, which cannot be distinguished by this scheme

[0034] Disadvantages: If the sub-station transmits the maintenance platen input or exit message, the communication between the main and sub-station happens to be abnormal, the information will be lost, or the real-time performance has been lost even though the supplementary information has been sent, which will affect the time range for the main station to judge the maintenance information

[0038] Disadvantages: If the communication status of the slave station changes from normal to overhaul or from overhaul to normal when the communication between the master and substation happens to be abnormal, the information will be lost, or the real-time performance has been lost even though the supplementary information has been sent. time frame impact

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