摘要
为了更安全、可靠且快捷地测量出6～10 kV电网的电容电流,笔者在总结现存电容电流测试方法的优缺点的基础上,提出了单相经电阻接地间接测量电容电流的方法,详细推导了其原理,给出了所设计的6～10 kV电网电容电流测试仪的硬件框图和软件流程。该测试仪可适用于各种小接地电流系统单相接地电容电流的测量。最后通过测试实例证明了该测试仪具有简单、易实施、测试过程安全、测量精度高、测试时间短等优点。
In order to measure the capacitive current in 6-10 kV power distribution network more securely, more reliably and faster, this paper summarized different schemes to measure capacitive current and analyzed their merits and shortcomings, and then proposed a new method to indirectly measure and calculate the capacitive current of distribution network with single phase to earth via resistance. Moreover, the principle of this method was deduced, and the schematics of hardware and software of the measurement 6-10kV system were given. This system can be used in each kind of network in despite of the means of neutral point to earth. A measurement example verified its simplicity, accuracy, safety and speed.
出处
《高压电器》
CAS
CSCD
北大核心
2008年第1期40-42,共3页
High Voltage Apparatus
关键词
电网
电容电流
测试仪
distribution network
capacitive current
measurement system
