Hexafluoride sulphur circuit breaker on-line monitoring instrument

Abstract

The invention discloses an on-line monitoring device of the sulphur hexafluoride circuit breaker for knowing the operating state of the breaker and the rejected region in time, reducing the fault incidence rate, increasing the work efficiency of the breaker and safety, increasing the repair pertinence and reducing the maintenance cost. The monitoring device is provided with a vibration frequency sensor and the vibration frequency sensor is connected with a singlechip microcomputer IC by a signal processing circuit A and a display circuit and an alarm circuit are connected with the singlechip microcomputer IC.

Description

Technical field: [0001] The invention relates to a tester for a sulfur hexafluoride circuit breaker, in particular to a tester that can know the working state and defective parts of the circuit breaker in time, reduce the failure rate, improve the working efficiency and safety of the circuit breaker, and improve the pertinence of maintenance And online monitors for sulfur hexafluoride circuit breakers that reduce maintenance costs. Background technique: [0002] Sulfur hexafluoride circuit breakers have been widely used in the power industry and are necessary high-voltage breaking products for large substations. The structure of the existing sulfur hexafluoride circuit breaker is that there is an insulating and sealed casing. In the insulating and sealing casing, there are upper insulating rods and lower insulating rods connected to the terminals of the current transformer. The front ends of the upper insulating rods and the lower insulating rods are respectively Equipped w...

AI Technical Summary

Problems solved by technology

[0003] 1. Failure to know the working status of the high-voltage circuit breaker in time may cause a failure before the maintenance time, which affects the normal operation of the current transformer, brings economic losses to the substation, and lacks safety guarantees;

[0004] 2. After a failure occurs, the defective parts cannot be found in time to achieve "targeted" maintenance. Instead, it needs to be completely disassembled for overhaul, which is not only time-consuming and laborious, but also increases the maintenance cost. At the same time, disassembly and reassembly will bring many new problems. Defects;

[0005] 3. Power outage maintenance is required. For a high-voltage circuit breaker that is completely normal (without potential failure), it not only reduces its work efficiency but also wastes maintenance costs;

[0006] 4. The number of high-voltage circuit breakers is large, the amount of maintenance is large, and the cost is high. More than 50% of the maintenance cost of the substation is used for the maintenance of high-voltage circuit breakers

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