摘要
由于输电走廊有限,高压交流架空线路不可避免地邻近民房平台,准确而快速地预测民房平台上方工频电场以满足限值要求对线路设计和环境评价至关重要。该文提出使用畸变系数曲线计算民房平台电场的工程实用方法,通过多元回归方法对不同尺寸的平台畸变系数进行拟合,并开展真型试验以证明预测结果。结果表明:多元回归拟合优度达0.997及以上,畸变系数公式拟合程度较好;利用畸变系数曲线求解的电场分布与实测结果对比,最大相对误差为5.9%,验证了预测方法的准确性。研究成果可为交流输电线路设计过程中,附近民房平台上方工频电场的快速预测提供支撑。
Due to the limited power transmission corridor,the HVAC overhead lines are inevitably adjacent to the residential platforms.To meet the limit requirements of the electric field,accurately and quickly predicting the power frequency electric field above the residential platforms is crucial for line design and electromagnetic environment assessment.In this paper,an engineering practical calculation method using the distortion coefficient curve of the residential platform is proposed.The platform distortion coefficient curves of different sizes are fitted by the multiple regression method.Finally,a true test is carried out to prove the predicted results.The result shows:the multiple regression goodness of fit is above 0.997,and the fitting degree of the formula is good.The electric field distribution solved by the distortion coefficient curve is compared with the measured results,and the maximum relative error is 5.9%,which verifies the accuracy of the prediction method.The research results can provide a technical basis for the fast prediction of the power frequency electric field above the nearby residential platform during the design process of the AC transmission line.
作者
徐吉来
高克利
万保权
路遥
刘兴发
张亮
XU Jilai;GAO Keli;WAN Baoquan;LU Yao;LIU Xingfa;ZHANG Liang(State Key Laboratory of Power Grid Environmental Protection(China Electric Power Research Institute),Wuhan 430074,Hubei Province,China;Heilongjiang Province Electric Power Research Institute,Harbin 150030,Heilongjiang Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2023年第20期8141-8150,共10页
Proceedings of the CSEE
基金
国家电网公司总部科技项目:输电线路附近民房平台处电场控制技术研究(8100-202055155A-0-0-00)。
关键词
工频电场
民房平台
畸变系数
多元回归分析
模拟电荷法
有限元法
真型试验
power frequency electric field
private housing platform
distortion coefficient
multiple regression analysis
simulated charge method
finite element method
true test
