摘要
随着配电网中电力电子设备和非线性负载增多,单相接地故障电流中除了基波容性电流外,还包含大量有功分量和谐波分量,传统消弧线圈无法补偿有功分量和谐波分量,导致故障点残流增大,影响故障电弧的自行熄灭,难以满足系统可靠性和安全性需求。阐述了有源电压消弧、无源电压消弧和有源电流消弧等新型消弧技术的原理、技术特点以及技术关键点,探讨了新型消弧技术综合控制思路,为后续技术研究以及装置推广应用提供参考。
With the increase of power electronic equipment and nonlinear loads in the distribution network,in addition to the fundamental capacitive current,the single-phase grounding fault current also contains a large number of active component and harmonic component.The traditional arc-suppression coil cannot compensate the active and harmonic components,which leads to the increase of residual current at fault points and affects the self-extinguishing of fault arcs,so it is difficult to meet system reliability and safety requirements.The paper explains the technical principles,technical difficulties and technical characteristics of new arc suppression technologies such as active voltage suppression,passive voltage suppression and active current suppression,discusses the comprehensive control ideas of the new arc suppression technology to provide references for subsequent technical research and product promotion.
作者
潘姝慧
白浩
周长城
吴丽芳
杨立国
李旭
PAN Shuhui;BAI Hao;ZHOU Changcheng;WU Lifang;YANG Liguo;LI Xu(Electric Power Research Institute of CSG,Guangzhou 510063,China;Electric Power Research Institute of Guangxi Power Grid,Nanning 530023,China)
出处
《供用电》
2022年第2期42-47,64,共7页
Distribution & Utilization
基金
中国南方电网有限责任公司科技项目(ZBKJXM20190061)。
关键词
消弧技术
电压消弧
电流消弧
有源消弧
无源消弧
t:arc suppression
voltage arc-suppression
current arc-suppression
active arc-suppression
passive arc-suppression
