电网技术2017，Vol.41Issue(2)：663-669,7.DOI:10.13335/j.1000-3673.pst.2016.1321
基于离子计数法的直流线路空间电荷密度测量
Space Charge Density Measurement Around DC Transmission Lines Based on Ion Counter
摘要
Abstract
When HVDC transmission line runs across areas with large number of aerosol particles suspended in dry air, changes of space charge density distribution may lead to high ground electric field strength. To study this phenomenon, space charge measurement is a direct and effective means. Ion counting principle and equivalent circuit model of current detection were analyzed. Design guidelines were proposed. An instrument prototype measuring space charge density was designed. The instrument was calibrated with indirect calibration method. Using the instrument, space charge density around a test DC transmission line was measured. Results show that lateral charge density distribution and quantity changes with line voltage are similar to resultant electric field and ion current density. The instrument can availably measure space charge density around HVDC transmission line.关键词
特高压直流输电线路/悬浮颗粒物/空间电荷密度/离子计数法/测量Key words
DC transmission line/suspended particles/space charge density/ion counter/measurement分类
信息技术与安全科学引用本文复制引用
张月魁,袁海文,马晓倩,陆家榆,鞠勇,杨晓洪..基于离子计数法的直流线路空间电荷密度测量[J].电网技术,2017,41(2):663-669,7.基金项目
国家电网公司科技项目(GYB17201400178)；国家自然科学基金项目(61273165)。 Project Supported by the Science and Technology Foundation of State Grid Corporation of China (GYB17201400178) （GYB17201400178）
National Natural Science Foundation of China (61273165) （61273165）
