On the basis of computing and analyzing the effect of restricting the resonance overvoltage by measures such as closing resistor and/or low voltage reactors, several measures to limit this kind of resonance overvoltage are put forward to ensure the secure.
在计算分析合闸电阻、投入低压电抗器等措施限制合空变谐振过电压效果的基础上,提出了抑制合特高压空载变压器谐振过电压的相应对策,以保证特高压试验示范工程的安全运行。
The method, in which arrester and closing resistor are applied to limit switching over-voltage, is extensively used in EHV.
国内外超高压系统中用得最多的利用避雷器与合闸电阻限制操作过电压的方法,在特高压系统中还能不能得到满足呢?文中利用ATP-EMTP软件分别对国内第1条特高压交流输电试验示范工程——晋东—南阳—荆门特高压交流输电工程中的1000kV输电线路使用避雷器和合闸电阻限制同期合闸过电压进行了分析研究,仿真结果表明利用多级合闸电阻与在线路两端和中部同时安装避雷器的方法效果最好。
This paper analyses and discusses the fault of 500 kV SF6circuit breaker closing resistor,and raises some viewson closing resistor.
对神头二电厂500kVSF6断路器合闸电阻故障原因进行了分析和探讨,并提出了有关合闸电阻的改进措施和建议。
In order to make the measurement of closing resistance on circuit breaker safe,simple, accurate and highly efficient during annual preventive test, the paper suggests a new method to measure the closing resistance on the circuit breaker by injecting high frequency current to measure it during the instant of closing.
为了使断路器年度预防性试验中合闸电阻的测量工作变得安全、简便、准确、高效,文章提出一种采用高频电流注入法测量断路器合闸电阻的新方法,利用断路器合闸动作的瞬间过程测量其合闸电阻,根据这种测量原理开发了一套“GN-HZ15型断路器合闸电阻测试仪”。
Meanwhile,the influence of closing resistance in circuit breaker was discussed.
为找出该事故的原因,利用Fortran语言和MATLAB软件详细计算该电站GIS内部的快速暂态过电压(VFTO),分析了VFTO对断路器中并联电容的危害,并讨论了断路器中合闸电阻对VFTO的影响。
The structure and characteristics of SF6 circuit breaker were emphasized to describe, and the technical subjects needed to solve urgently, such as over-voltage restraining, contact performances, the coordination of operating time for resistance switching in and off, were put forward.
综述了国际上用于特高压输电系统的高压开关设备的特点及其相关设备试验技术等问题,重点讲述了SF6断路器的结构和特点,并提出过电压抑制、触头的关合性能、电阻合闸和开断时操作时间的配合等技术课题急需解决。
The comparison of the advantage and disadvantage of opening resistor suggests that the UHV breaker of this project does not need opening resistor.
比较了断路器装分闸电阻的优缺点,建议此工程可不装分闸电阻。