摘要
潜供电弧快速熄灭,提高单相重合闸成功率,是保证特高压交流系统稳定安全运行的重要问题。根据潜供电流和恢复电压的机理,提出利用带中性点小电抗的并联电抗器来限制潜供电流的方法,并且讨论了在不同补偿度下,小电抗取值的选择。采用电磁暂态计算程序ATP-EMTP,对交流1 000 kV晋荆线进行了仿真分析,仿真结果表明:加装小电抗对潜供电流限制效果明显,小电抗的取值变化会导致电抗器补偿度受到限制,并对中性点绝缘造成威胁,故小电抗取值应固定。
Dive for the rapid increase in arc current,single phase resoling low,is to ensure a stable,secure communication system.According to the restoration of voltage and mechanisms that make use of a small electrical resistance in the neutral of shunt reactor to limit secondary arc current,and discussed in different compensation for the next,the electrical resistance to the value of choice.Use magnetism for application atp-emtp states to AC 1 000 kV Jinjing line with the analysis showed simulated,and put the electrical resistance of electricity to flow restrictions on the potential effect,the power of the value changes will lead to shunt reactor compensation for the limited,and to threaten neutral point insulated,so it should be fixed value.
出处
《电力学报》
2010年第6期467-469,共3页
Journal of Electric Power
