Transient Recovery Voltage Distribution Ratio and Voltage Sharing Measure of Double- and Triple-Break Vacuum Circuit Breakers
Source abstract
Abstract
Transient recovery voltage (TRV) distribution ratio and voltage sharing measure of series arrangement double- and triple-break vacuum circuit breakers (VCBs) were studied in this paper. The mathematical analysis of the TRV distribution ratio in a double-break VCB shows that the uneven TRV distribution ratio is caused by the stray capacitances and the imbalanced postarc current as a result of the difference of the postarc plasma characteristics in each vacuum interrupter. This has been proven by the synthetic breaking tests and simulation results based on a modified vacuum arc interruption model of a double-break VCB. On this basis, voltage sharing measure for a 126-kV triple-break VCB designed for the 110-kV power network has been discussed. The synthetic breaking test results indicated that the 126-kV triple-break VCB with 1000-pF grading capacitors has a substantially uniform TRV distribution, and can successfully break the rated short-circuit interrupting current (40 kA rms ).
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Vacuum and Plasma Arcs · Electrical Fault Detection and Protection · High voltage insulation and dielectric phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
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