Multifunctional electrical characteristic testing device and testing method for high-voltage circuit breaker

Abstract

The invention discloses a multifunctional electrical characteristic testing device and a multifunctional electrical characteristic testing method for a high-voltage circuit breaker. The testing device consists of a dynamic resistance detection module, a non-synchronism detection module, a displacement sensor, Hall current sensors, a data acquisition card, an industrial control computer and an industrial display screen, wherein a super capacitor is used as a power supply for the detection of loop resistance, and impact current with a peak value of 1,000A is used as detection current. The testing device is a multifunctional testing instrument integrating the detection of loop resistance, closing resistance, closing resistance running time and mechanical characteristics of the high-voltage circuit breaker.

Description

technical field [0001] The invention relates to the field of high-voltage circuit breakers, in particular to a high-voltage circuit breaker electrical characteristic testing device and a testing method thereof. Background technique [0002] High-voltage circuit breakers are the most important electrical equipment in high-voltage electrical appliances. In the primary equipment of the power system, in terms of single equipment, the circuit breaker is the second largest power equipment after generators and transformers, but it ranks second in terms of the required quantity and the investment of power station equipment. before. Therefore, the reliability of circuit breaker performance is related to the safe operation of the power system. [0003] The electrical characteristics of high-voltage circuit breakers include loop resistance, closing resistance, switching resistance input time, and mechanical characteristics of the circuit breaker. However, the current testing instrum...

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Problems solved by technology

[0004] In addition, when measuring the loop resistance, the power supply usually used is a DC power supply, but due to the limitation of the heat generation of the DC power supply, the output current value of the internal energy is generally small, and the resistance value of the loop resistance itself is very small, which will make the measured The electrical signal is very small, it is difficult to meet the accurate collection on site, and the small current cannot remove the oxide film on the contact, but the measured value is too large

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