项目名称: 高海拔地区交流输电线路电晕损失规律及其影响因素分析
项目编号: No.51277073
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 电工技术
项目作者: 刘云鹏
作者单位: 华北电力大学(保定)
项目金额: 88万元
中文摘要: 本项目针对我国高海拔地区交流输电线路面临的电晕损失问题开展研究。 首先,离子迁移率影响不同海拔条件下导线电晕损失的最主要因素,通过搭建不同海拔下(气压)离子迁移率的测量平台,获得不同海拔条件下的离子迁移率,为建立考虑海拔因素影响的电晕损失计算模型提供关键参数。 然后,基于气体放电机理,在获得不同海拔条件下离子迁移率的基础上,应用模拟电荷法,建立考虑海拔因素的电晕笼导线电晕损失计算模型,形成高海拔地区输电线路电晕损失计算分析方法,并结合环境气候实验室和高海拔点实测,获得不同海拔条件下导线电晕损失特性曲线,验证计算模型的准确性。 此外,结合我国高海拔地区特点,开展污秽对交流导线起晕特性和电晕损失特性影响规律的研究,得到不同海拔下污秽导线的电晕损失数据,为我国高海拔地区超高压输电线路优化、导线选型提供参考。
中文关键词: 高海拔;电晕损失;交流输电线路;离子迁移率;分裂导线
英文摘要: This project is targeting at the corona loss problems of power transmission lines in high altitude areas in China. First, ion mobility is the main factor that influences the corona loss in different altitude, based on the development of the ion mobility test platform, ion nobilities in different altitudes are gained, which can provide the key parameter for the corona loss calculation model with the consideration of altitude factors. Then, based on the corona discharge theory, charge simulation method is adopted to develop the calculation model with the consideration of altitude factors, by which a corona loss calculation model that can satisfy the requirement of different altitude areas in China. Combined with the measurement result, the corona loss characteristic curves will be gained and the calculation model could be verified. In addition, combined with the characteristic of the high altitude regions in China, the corona onset and corona loss characteristic influence rules are studied. The corona loss of contaminated conductor in different altitudes can provide a reference for the optimization of the EHV power transmission lines and the selection of conductors.
英文关键词: high altitude;corona loss;AC transmission line;ion mobility;bundle conductors