A system and method for verifying phase selection operation performance of a high voltage phase selection circuit breaker

Abstract

The invention provides a system and method for verifying phase selection operating performance of a high voltage phase selection breaker. The system comprises a power supply G, a transformer T, a current-limiting resistor R, a compensation capacitor C, the high voltage phase selection breaker SP, a current measuring device I1, a core penetrating type current transformer I2, a voltage measuring device U1 and a voltage divider U2. The power supply G is connected with a primary side of the transformer T in series, the current-limiting resistor R is connected with the compensation capacitor C in series to form an R-C subcircuit, the high voltage phase selection breaker SP, the current measuring device I1 and the core penetrating type current transformer I2 are connected in series in sequence to form an SP-I1-I2 subcircuit, the R-C subcircuit and the SP-I1-I2 subcircuit are connected in series and are connected with a secondary side of the transformer T, and the voltage measuring device U1 and the voltage divider U2 are both connected with the SP-I1-I2 subcircuit in parallel. The system and method for verifying the phase selection operating performance of the high voltage phase selection breaker can meet the requirements for assessing the phase selection operation of the breaker, applied equipment is few, and the system and method for verifying the phase selection operating performance of the high voltage phase selection breaker are easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of high-voltage reactive power compensation, and in particular relates to a system and method for verifying the phase-selection operation performance of a high-voltage phase-selection circuit breaker. Background technique [0002] Reactive power compensation is of great significance to the stable operation of the power grid. Switching capacitor banks is an important means of reactive power compensation, and UHV capacitor bank switches are key equipment for switching capacitor banks. As a result, there is currently a serious shortage of electrical life, which has become a bottleneck restricting the development of my country's UHV power grid. [0003] The traditional conventional circuit breaker has the defect that the electrical life is seriously insufficient, so the phase selection circuit breaker is used to switch the capacitor bank for reactive power compensation. Less contact erosion resulting in longer e...

AI Technical Summary

Problems solved by technology

[0004] The phase selection controller in the circuit breaker is the key to ensure the success of phase selection. Whether it is a direct test circuit or a synthetic test circuit, only the breaking capacity of the phase selection circuit breaker can be tested, but the phase selection operation of the phase selection circuit breaker cannot be performed. Conduct test evaluation

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