Online evaluation system of secondary equipment of intelligent substation

Abstract

The invention relates to an online evaluation system for secondary equipment of an intelligent substation. The system comprises a master-station evaluation level and a transformer substation evaluation level, wherein the master-station evaluation level comprises an evaluation master station, the transformer substation evaluation level comprises a plurality of evaluation sub-stations which are arranged in all transformer substations respectively and multiple evaluation objects, corresponding to the evaluation sub-stations, of the relevant secondary equipment, the evaluation sub-stations are in communication with the corresponding multiple evaluation objects respectively through three-in-one network interchangers and communication lines, so that the evaluation parameters of the evaluation objects are collected, and the master station is in communication with the evaluation sub-stations through communication networks respectively so as to obtain the evaluation results of the evaluation sub-stations. The online evaluation system for the secondary equipment of the intelligent substation has the advantages that due to the fact that the online monitoring function of a monitoring system in the intelligent secondary equipment in the intelligent substation is used, in this way, excessive maintenance can be avoided, the workload of maintenance personnel is reduced, maintenance cost is reduced, and evaluation accuracy is extremely high.

Description

technical field [0001] The invention relates to the technical field of intelligent substations, in particular to an online evaluation system for all secondary equipment in the intelligent substation. Background technique [0002] The secondary equipment in the smart substation includes relay protection, measurement and control devices, merging units, intelligent terminals, monitoring systems, time synchronization systems, switches, network systems, etc., which protect and protect primary equipment (transformers, circuit breakers, lines, etc.). measurement, control and monitoring etc. Secondary equipment plays a key role in ensuring the safe and economical operation of substations and preventing accidents from occurring and expanding. Judging from the actual operation of the substation, there are still many accidents caused by the failure of secondary equipment, resulting in monitoring abnormalities and even partial grid disconnection and loss of voltage, which brings a lot ...

AI Technical Summary

Problems solved by technology

However, this method of performing maintenance according to the specified time interval without considering the actual situation of the equipment will inevitably lead to "surplus maintenance", resulting in the loss of effective use time of the equipment, the waste of manpower, material resources, and financial resources, and even lead to maintenance. failure, and the failure of the device between two inspections cannot be found in time

[0004] With the use of a large number of new high-quality intelligent secondary equipment, the traditional secondary cables that cannot be detected online in substations have become optical fiber networks that can be detected online. The main method of inspection will only cause over-repair, reduce the stability and reliability of equipment operation, and cause waste of manpower, material and financial resources. Therefore, it is very urgent to conduct online evaluation of secondary equipment in smart substations.

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