High-voltage circuit breaker state maintenance method and system

Abstract

The invention discloses a high-voltage circuit breaker state maintenance method and system. The method comprises the following steps: collecting body state quantities and health values of a high-voltage circuit breaker as sample sets; training the collected sample sets to obtain a prediction model of the health values of the high-voltage circuit breaker and the body state quantities of the high-voltage circuit breaker; taking the state quantities of the high-voltage circuit breaker body as input, and calculating a health value of the circuit breaker according to the prediction model; collecting the state quantities of a secondary circuit of the high-voltage circuit breaker and the state quantities of secondary auxiliary equipment as the inputs of a circuit breaker state maintenance module;and taking the calculated health value and the acquired state quantity of the secondary system as inputs, and judging whether the state of the circuit breaker needs to be overhauled or not accordingto the circuit breaker state maintenance module. The invention further discloses a high-voltage circuit breaker state maintenance system, whether the circuit breaker needs to be maintained or not canbe judged by collecting the body state of the high-voltage circuit breaker, the state of the secondary circuit and the state of the secondary auxiliary equipment, the real circuit breaker state maintenance function is achieved, and the operation and maintenance capacity is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent control of high-voltage circuit breakers, in particular to a method for condition inspection and maintenance of high-voltage circuit breakers, and the invention also relates to a system for condition inspection and maintenance of high-voltage circuit breakers. Background technique [0002] High-voltage circuit breaker is the most important electrical equipment in the electrical system except for generators and transformers. It plays the dual task of control and protection. An accident will cause a power grid accident or expand the accident, resulting in considerable economic and other losses. [0003] Circuit breaker online monitoring evaluates the health value and failure risk of the circuit breaker body through comprehensive data such as circuit breaker model, cumulative number of actions, mechanism oil pressure, SF6 air pressure and partial discharge monitoring. However, for circuit breaker...

AI Technical Summary

Problems solved by technology

[0002] High-voltage circuit breaker is the most important electrical equipment in the electrical system except for generators and transformers. It plays the dual task of control and protection. In the event of an accident, it will cause a power grid accident or expand the accident, resulting in considerable economic and other losses

[0003] Circuit breaker online monitoring evaluates the health value and failure risk of the circuit breaker body through comprehensive data such as circuit breaker model, cumulative number of actions, mechanism oil pressure, SF6 air pressure and partial discharge monitoring. However, for circuit breaker control circuits, such as control coils, energy storage Secondary equipment and circuits such as motors, auxiliary contacts, and interlock circuits cannot be effectively supervised

Although the circuit breaker on-line monitoring can effectively monitor the circuit breaker body, but without monitoring the secondary circuit of the circuit breaker, it is impossible to truly realize the condition maintenance of the circuit breaker in practical applications, and there are monitoring blind spots

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