Investigation of an SF/sub 6/ ultra high voltage circuit breaker using an opening resistor and auxiliary interrupter

Oshita, Y.; Hirasawa, Kotaro; Kurosawa, Yoshio

doi:10.1109/61.108928

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since both the inductance and the capacitance are energy storage components in power systems, a transient process occurs when the operation states change due to normal operations or faults handling. During the state transition, operating overvoltage several times higher than the rated power voltage may occur [3][4][5]. This situation threatens the system insulation and destroys the insulation performance of the system in severe cases, so accidents may occur.…”

Section: Introductionmentioning

confidence: 99%

Circuit Breaker Rate-of-Rise Recovery Voltage in Ultra-High Voltage Lines with Hybrid Reactive Power Compensation

et al. 2018

View full text Add to dashboard Cite

Abstract:With the development of ultra-high voltage (UHV) technology, hybrid reactive power compensation (HRPC) will be widely applied in the future. To study the mechanism by which HRPC influences the characteristics of circuit breakers in UHV transmission lines, this paper establishes an improved electromagnetic coupling transmission line model for out-of-phase and short-line faults. Based on the HRPC equivalent model, a simulation analysis was performed on the characteristics of the circuit breaker when a fault occurs. Using an equivalent lumped parameter circuit, the rate-of-rise of recovery voltage (RRRV) computational formula was deduced and computed. The RRRV variation in the circuit breakers in the system, with and without HRPC, was obtained. Given the circuit breaker interruption characteristics, the research results provide an analysis foundation and a theoretical basis for optimizing the HRPC parameters and selecting the arrangements of circuit breakers in an UHV transmission line.

show abstract

Section: Introductionmentioning

confidence: 99%