基于无线同步通信的变电站漏电流检测系统研究

Research on Substation Leakage Current Detection System Based on Wireless Synchronous Communication

摘要:

变电站站用电系统是保障变电站安全稳定运行的关键，电缆中的漏电流可能引发沟道着火等严重事故。固定式监测装置存在造价成本过高、推广难度大等诸多不足。针对站用电系统漏电流的准确检测问题，研发了一套新型的站用电系统漏电流检测系统。该系统由多个无线采集终端构成，具备多通道同步采集、自动数据通信、电流矢量和计算等功能，可实现变电站站用电系统漏电流的精确检测与缺陷的精准定位，从而及时消除事故隐患。为验证所研发系统的有效性与准确性，在变电站现场进行了实际检测，排查发现并处理了多处站用电系统漏电流隐患。结果表明，所研发系统能够快速、有效、准确地检测站用交流系统的运行情况，具有较高的经济性与实用性，有助于保障变电站的安全稳定运行。

Abstract:

Auxiliary power system of substation is the key to ensure the safe and stable operation of substation, but the leakage current in the cable may cause serious accidents such as channel fire. And the fixed monitoring device has many disadvantages, such as high cost and difficult popularization. Aiming at the problem of accurate detection of leakage current of auxiliary power system, a new leakage current detection system of auxiliary power system is developed. This system is composed of multiple wireless acquisition terminals and has the functions of multi-channel synchronous acquisition, automatic data communication, current vector sum calculation, which can realize the accurate detection of leakage current and the accurate positioning of defects in auxiliary power system, so as to eliminate the potential accidents in time. In order to verify the effectiveness and accuracy of the proposed system, the actual detection is carried out in the substation site, and many potential current leakage problems in auxiliary power system are found and processed. The results show that this system can quickly, effectively and accurately detect the operation of auxiliary power system and is helpful to ensure the safe and stable operation of substation, which has high economy and practicability.