Analysis of influence of a novel inductive fault current limiter on the circuit breaker in 500 kV power system

High voltage

article

Qiang Tang¹  Shenli Jia¹  Yanzhe Zhang¹  Shixin Xiu¹  Wenxiong Mo²  Yong Wang²  Haibo Su² 

[1] Department of Electrical Engineering, Xi'an Jiaotong University;Test and Research Institute of Guangzhou Power Supply Company Ltd.

关键词: circuit breakers;    equivalent circuits;    fault current limiters;    power capacitors;    power system faults;    power system protection;   

DOI  :  10.1049/hve2.12097

学科分类：物理（综合）

来源: Wiley

【 摘 要 】

A contribution to the engineering application of a proposed 500 kV fault current limiter (FCL) is presented. A new type of FCL composed of a highly coupled split reactor (HCSR) and fast switches is proposed. When the circuit breaker (CB) in series with the FCL in the 500 kV power system interrupts the limited fault current, the rate of rise of the recovery voltage (RRRV) reaches a value much higher than the rated value. Based on a simplified equivalent single-phase circuit, the influence of the new FCL on the interruption procedure of the CB is simulated and discussed. The simulation results show that the high RRRV is caused by high-frequency resonant oscillations between the HCSR and its parasite capacitance. Analysis indicates that when the reactance of the FCL is close to the short circuit reactance of the system, the RRRV will reach the highest value. To solve this issue, we proposed installing a shunt capacitor with the FCL. Simulation results showed that the RRRV under all fault modes could be restrained to below the rated value by introducing a certain shunt capacitor.

【 授权许可】

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