System and method of testing high-voltage circuit breaker

Abstract

The present invention discloses a system and method of testing a high-voltage circuit breaker. The system comprises a speed measurement sensor, a distance measurement sensor, a current sensor, a data acquisition and processing system and an industrial control computer. The insulation characteristics, the electrical characteristics and the mechanical characteristics, measured by the speed measurement sensor, the distance measurement sensor and the current sensor, of a high-voltage circuit breaker are sent to the industrial control computer through the data acquisition and processing system; the insulation characteristics are the leakage current and the insulation resistor of the high-voltage circuit breaker; the electrical characteristics are the opening and closing current and the measurement current; and the mechanical characteristics are the total motion time, the motion amount and the motion merge-joint direction of the high-voltage circuit breaker, and the accelerated speed, the acceleration time, the uniform motion speed, the uniform motion time, the deceleration process of the motion, the overshoot of the motion and the overshoot time when the motion starts. The system and method of testing a high-voltage circuit breaker are able to discover an abnormal state and predicate a fault period at the early state of the fault so as to fully make a service preparation and provide a technology basis for reasonably making the maintenance plan of a device, therefore the operation reliability of the power grid is improved.

Description

technical field [0001] The invention relates to a test system, in particular to a high-voltage circuit breaker test system and a test method thereof. Background technique [0002] The high-voltage circuit breaker is an important electrical equipment with the most frequency of failure, maintenance and parameter measurement in the power system. Its reliability directly affects the safety of the power grid in the power system. With the improvement of people's living standards, people have higher and higher requirements for power supply quality. It will become a severe task for the power system to improve the monitoring and maintenance methods of circuit breaker equipment to ensure the normal operation of circuit breakers. [0003] Traditional circuit breaker equipment maintenance methods can be broadly divided into two methods: operation to failure and regular maintenance. Both of these methods require a large number of spare parts, and maintenance personnel must be fully prep...

AI Technical Summary

Problems solved by technology

A large amount of manpower is required to support the testing process, which brings great difficulties to the actual operation of the test

[0007] 3. Low measurement accuracy: due to the limitation of equipment sampling accuracy, the test accuracy of traditional test methods is very low, especially when testing the speed of circuit breakers, in many cases it needs to be estimated, and it is difficult to accurately test the equipment

[0008] Therefore, under traditional test conditions, it is difficult to test the equipment as required

The testing process is only to detect and analyze the instantaneous condition of the circuit breaker. It is difficult to conduct a comprehensive analysis on the movement process of the circuit breaker, the current waveform of the control circuit, the mechanical characteristics and electrical characteristics of the high-voltage circuit breaker, especially for the circuit breaker. Accurate measurement of the movement process of the device and the movement curve of the moving contact

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