中国电机工程学报Issue(15)：2445-2451,7.DOI:10.13334/j.0258-8013.pcsee.2014.15.015
自积分式D-dot电压互感器原理及试验研究
Principles and Experiments of Voltage Transformer Based on Self-integrating D-dot Probe
摘要
Abstract
Traditional voltage transformers in power system contain windings or iron cores, which can make transient response fail in following the change of primary voltage and leads to ferroresonance overvoltage. These transformers also have disadvantages in narrow bandwidth and large size. Morever, these devices need to be contacted to high voltage conductors during measuring process. A new voltage transformer was proposed as a kind of non-contacting voltage transformer based on the measuring principle of D-dot probe. D-dot probe can realize non-contact measurement of conductors according to the priciple of electric-field coupling. With the differential input circuit and multi-electrode structure, the voltage transformer can avoid spurious inductance brought by load resistances and integrators, and reduce phase errors. The finite element simulation was operated to get the optimal configuration of the voltage transformer. The probe was manufactured into printed circuit board (PCB) for testing its error and transient behaviors in 10 kV voltage level. The results show that the voltage transformer not only meets the requirement of high accuracy but also has a good transient response. The voltage transformer can meet the requirement of smart grid, which needs sensors to be intelligent, miniature and convenient.关键词
电压测量/D-dot电压互感器/非接触测量/自积分/多重电极/有限元计算Key words
voltage measurement/D-dot probe/non-contact measurement/self-integrating/multi-electrode/finite element calculation分类
信息技术与安全科学引用本文复制引用
何为,罗睿希,汪金刚,冉鹏,汪泉弟,侯兴哲,周孔均..自积分式D-dot电压互感器原理及试验研究[J].中国电机工程学报,2014,(15):2445-2451,7.基金项目
国家自然科学基金项目(51207175)。Project Supported by National Natural Science Foundation of China (51207175) （51207175）
