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首页> 外文期刊>E3S Web of Conferences >Transient Characteristics Analysis of 500kV Parallel Circuit Breaker Based on Highly Coupled Split Reactor
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Transient Characteristics Analysis of 500kV Parallel Circuit Breaker Based on Highly Coupled Split Reactor

机译：基于高耦合分裂电抗器的500kV并联断路器的暂态特性分析

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With the continuous expansion of power system capacity, parallel high-voltage circuit breakers with a Highly Coupled Split Reactor (HCSR) have a potential application for limitation of high short-circuit current. However, as the parallel circuit breakers open at different time, the residual voltage of the split reactor on the post-open circuit breaker is higher and the stray capacitors of HCSR form high-order oscillating circuits, which may lead to serious transient recovery voltage (TRV). Therefore, it is necessary to analyze and simulate the transient characteristics of 500kV HCSR. Firstly, the equivalent model of HCSR circuit breakers is built in EMTP simulation plat-form, and its TRV generation is analyzed. Then, the TRV of parallel circuit breakers under different operating conditions and fault types is simulated and calculated. Finally, according to the statistical calculation results, the protection measure of 0.2uF shunt capacitance to limit rise rate of TRV is proposed.
机译：随着电力系统容量的不断扩大，带有高耦合分体电抗器（HCSR）的并联高压断路器在限制高短路电流方面具有潜在的应用前景。但是，由于并联断路器在不同的时间断开，因此分路电抗器在断开后的断路器上的残余电压更高，并且HCSR的杂散电容器会形成高阶振荡电路，这可能会导致严重的瞬态恢复电压（ TRV）。因此，有必要对500kV HCSR的暂态特性进行分析和仿真。首先，在EMTP仿真平台上建立了HCSR断路器的等效模型，并对其TRV的产生进行了分析。然后，对并联断路器在不同工况和故障类型下的TRV进行仿真和计算。最后，根据统计结果，提出了0.2uF并联电容限制TRV上升速率的保护措施。

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