Centralized control type relay protection equipment intelligent operation and maintenance method based on cloud edge collaboration

Abstract

The invention belongs to the technical field of relay protection, and particularly relates to an intelligent operation and maintenance method for centralized control type relay protection equipment based on cloud edge collaboration. According to the method, remote anomaly screening, inference analysis and state evaluation of the secondary equipment of the power system are realized by using mass recording data in a recording master station system database, big data normalization monitoring of longitudinal disturbance judgment and transverse comparison troubleshooting is performed, common faults of the oscillograph are locked, and the fault diagnosis accuracy is improved. The maintenance of the oscillograph is improved from the past'inspection upon expiration 'to'inspection upon time', so that the plan is sufficient before getting off the station, the indexes of increasing the success rate of one-time maintenance, shortening the maintenance time and the like are realized, the work load of getting off the station is reduced, and staff reduction and efficiency improvement are realized.

Description

technical field [0001] The invention belongs to the technical field of relay protection, and in particular relates to an intelligent operation and maintenance method for centralized control relay protection equipment based on cloud-edge collaboration. Background technique [0002] With the expansion of the power grid, the number of smart substations and wave recorders has ushered in a period of rapid growth. The contradiction between the increasing workload of operation and maintenance and the limited number of inspection personnel is becoming more and more prominent. Traditional operation and maintenance relies on manpower to regularly stop The patrol inspection is not only labor-intensive and inefficient, but also the inspection personnel have no effective way to perceive the current status of the secondary equipment, and the accuracy of troubleshooting is difficult to guarantee. Therefore, China Southern Power Grid put forward the development idea of ​​"intelligent operat...

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Problems solved by technology

[0006] (1) There is a serious shortage of inspection personnel: China Southern Power Grid has more than 70,000 sets of protection devices and nearly 7,000 sets of wave recorders in operation. The number of equipment is increasing rapidly, but the number of inspection personnel cannot be increased simultaneously. Exposing a huge manpower gap, it is difficult to support the operation and maintenance of relay protection equipment

[0007] (2) High labor intensity of operation and maintenance: the number of operation and maintenance equipment is increasing day by day, coupled with different manufacturers, models, structures, and functions, resulting in complicated equipment inspection items, and the load of inspection personnel in the allocation of regular inspection tasks is getting heavier and heavier , the on-site labor intensity is high, and the operation time is long, which is a severe test for the psychological and physical fitness of the personnel. If things go on like this, it is difficult to guarantee the service quality of operation and maintenance

[0008] (3) Low efficiency of operation and maintenance work: according to the assigned inspection tasks and operating rules, the inspection personnel fill in the inspection results in the form of forms, and the real-time response to equipment failures is poor, and there is no inspection guidance, no side The key point is to adopt the method of sweeping all items, which will easily lead to the problem of low operation and maintenance level and maintenance efficiency

[0009] (4) It is difficult to find problems in time: regular inspections have fixed time, and the faults found during regular inspections can be recorded, and a defect elimination list can be issued for tracking and processing, but for potential problems with deterioration trends or after regular inspections Faults that occur are difficult to find out during regular inspections or discovered in time after the faults, which may cause hidden dangers to the normal operation of relay protection equipment or failure of data collection. It is difficult to ensure timely detection of equipment faults by relying on manual inspections reliability, accuracy and completeness of troubleshooting

[0010] The maintenance guidance of the remote wave recorder based on the wave recording master station has always been a shortcoming in the field of relay protection intelligence. A lot of verification work is very cumbersome and inefficient

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