State monitoring device and method for relay protection equipment based on secondary circuit

Abstract

The invention discloses a relaying protection equipment state monitoring device and a monitoring method based on a secondary circuit. The relaying protection equipment state monitoring device and the monitoring method based on the secondary circuit are characterized by comprising a mutual inductor, wherein the mutual inductor is sequentially connected with an analog-digital conversion module, an industrial personal computer and an alarm device, and the industrial personal computer is connected with relaying protection equipment, receives the information of the analog-digital conversion module, collects the information of the relaying protection equipment in an original transformer substation, and compares the data of the analog-digital conversion module with the data of the relaying protection equipment. If the compared result meets alarm conditions, corresponding to the same secondary circuit, the ratio R between the data of the analog-digital conversion module and the data of the relaying protection equipment is larger than or equal to 1.05 or smaller than or equal to 0.95, an alarm signal is given to the alarm device, meanwhile, the industrial personal computer receives the information of the analog-digital conversion module, collects the information of the relaying protection equipment in the original transformer substation, and transmits the compared result to a cloud server, and data sharing is achieved. The relaying protection equipment state monitoring device and the monitoring method based on the secondary circuit are applicable, stable and reliable, and timely acquire the operation information of the relaying protection equipment, so that timely alarming and overhaul treatment are carried out when equipment hidden dangers exist, and therefore accidents are prevented from happening.

Description

technical field [0001] The invention relates to a monitoring device and a monitoring method, in particular to a secondary circuit-based relay protection equipment state monitoring device and monitoring method. Background technique [0002] The maintenance of relay protection equipment in a fixed period is mainly to check whether the protection device can operate correctly and whether the tripping and closing circuit is intact by simulating an equipment failure, basically without the nature of repair. Therefore, the reliability of the protection device that has just been inspected has not improved, and there is no guarantee that there will be no failure in the short term; the performance of the protection device that has not been repaired is not necessarily poor. Most of the protection equipment has been inspected, which not only causes waste of manpower, material resources and financial resources, but also directly reduces the reliability of power supply; therefore, it has b...

AI Technical Summary

Problems solved by technology

[0004] (1) It is difficult to monitor and evaluate the operating status and life of electronic components inside the microcomputer protection device

[0005] (2) Although the microcomputer protection has a self-inspection function, it cannot self-inspect the acquisition accuracy and accuracy of the device

[0006] (3) There is a lack of monitoring means for the secondary circuit of relay protection. If all circuits are monitored, capital investment will greatly increase the complexity of the equipment, and it is easy to cause parasitic circuits to cause incorrect operation of the equipment

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