摘要
分析了采用合闸电阻的必要性和合闸电阻阻值的选择问题。结果表明,特高压交流系统由于限制要求的提高,必需采用合闸电阻限制过电压;合闸电阻阻值应选择在1~2倍线路波阻抗范围内,且较长线路采用较低阻值而较短线路采用较高阻值的合闸电阻,更有利于过电压的限制。
The essentiality of using closing resistor and the selection of its resistance were studied.Results showed that the overvoltage must be limited by closing resistor because of the more restrictive requirement in UHVAC system.The value of closing resistor should be 1~2 times of the line＇s surge impedance.And it is better to adopt closing resistors with low resistance values for longer transmission lines and that with high resistance values for shorter transmission line.
出处
《能源工程》
2011年第4期27-31,共5页
Energy Engineering
