On-line monitoring method of state of relay protection equipment

Abstract

The invention discloses an on-line monitoring method of a state of relay protection equipment, which ensures a content of self-inspection information provided by the relay protection equipment. The method comprises the following steps of: classifying self-inspection information; adding additional information and content thereof of each kind of self-inspection information, which is capable of reflecting the influence degree to the equipment state; collecting the self-inspection information provided by the relay protection equipment through using the IEC-61850 communication standard adopted by the communication network in a transformer substation by a state overhaul host, and building a static and dynamic self-inspection information database of the relay protection equipment; and carrying out on-line monitoring on the state of the equipment by using a general state mathematic model of the relay protection equipment in real time so as to provide the guidance for the state overhaul of therelay protection equipment. Through the on-line monitoring method of the state of the relay protection equipment, the state of the relay protection equipment can be monitored on line, the reliabilityand the usability of the relay protection equipment can be improved, the service life of the relay protection equipment can be prolongged, the operation and overhaul expenses can be reduced and the economic benefit can be increased.

Description

technical field [0001] The invention relates to the field of relay protection in electric power systems, and more specifically relates to an online monitoring technology for the health status of relay protection equipment in substations. Background technique [0002] Relay protection equipment is a strong guard for the safe and stable operation of the power grid, and its health directly affects the operation of the power grid. At present, there is no method for online monitoring of the health status of relay protection equipment, and we can only rely on traditional maintenance methods to understand the health status of relay protection equipment. There are two methods of traditional relay protection maintenance: periodic maintenance and corrective maintenance. [0003] During periodical maintenance, a planned maintenance system based on preventive tests is implemented for electrical equipment. For a long time, regular preventive tests and planned maintenance in the case of...

AI Technical Summary

Problems solved by technology

[0004] (1) Power outage is required for testing, and the availability of equipment is low

[0005] (2) Emphasis on "required repairs when due", inspection, testing and repairs must be carried out as soon as the cycle is up, resulting in waste of maintenance personnel and materials

[0006] (3) Equipment health is uncontrollable

Its shortcoming is that it cannot meet the requirement of focusing on prevention, and the consequences of failure are generally serious, which seriously affects the reliability of power supply.

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