摘要
工频过电压是威胁线路安全稳定运行的重要因素。可以利用电磁暂态仿真软件ATP EMTP对海上风电场系统及其送出线路进行建模,对工频过电压进行计算和分析。研究表明:0.97 p.u.、1.00 p.u.、1.07 p.u.3种情况下过电压水平均与线路长度成正比;系统侧甩负荷时过电压水平远大于风场侧甩负荷。对海上风电场中变压器、海缆、风电机组的无功损耗进行分析,结合对过电压的计算和分析以及相关标准规定,提出了一种简单实用的海上风电场无功配置方案。该方案可满足对工频过电压的限制,且可满足风电场无功需求。
Power frequency overvoltage is an important factor threatening the safe and stable operation of the line.The electromagnetic transient simulation software ATP EMTP is used to model the offshore wind farm system and its outgoing line,and the power frequency overvoltage is calculated and analyzed.The results show that the overvoltage level is proportional to the line length in all three cases.The overvoltage level of the system side load dumping is much greater than that of the wind field side load dumping.Finally,this paper analyzes the reactive power loss of transformer,cable and wind turbine in offshore wind farms,and proposes a simple and practical reactive power allocation scheme for offshore wind farms in combination with the calculation and analysis of overvoltage and relevant standards.This solution can meet the limitation of power frequency overvoltage and reactive power demand of wind farm.
作者
刘哲
覃喜
刘燕平
杨继平
麻潇波
章磊
LIU Zhe;QIN Xi;LIU Yanping;YANG Jiping;MA Xiaobo;ZHANG Lei(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Zhejiang Huayun Power Engineering Design Consulting Company,Hangzhou,Zhejiang 310000,China)
出处
《上海电力大学学报》
CAS
2023年第3期264-270,共7页
Journal of Shanghai University of Electric Power
关键词
工频过电压
海上风电场
无功配置
无功补偿
frequency over-voltage
offshore wind farm
reactive power allocation
reactive power compensation
作者简介
通信作者:刘哲(1997-),男,在读硕士。主要研究方向为高电压与绝缘技术。E-mail:lz666666lz@outlook.com。
