中国电机工程学报2017，Vol.37Issue(18)：5313-5320,8.DOI:10.13334/j.0258-8013.pcsee.161805
长距离直流线路谐波阻抗计算方法与直流谐振特性研究
Researches on Long-range DC Line Harmonic Impedance Calculating Methods and DC Resonance Characteristics
摘要
Abstract
For UHVDC projects,it's determined by system harmonic characteristics whether low-frequency block-filters or DC-filters are needed to be installed or not.Firstly,based on two basic DC circuit "pole-pole"/"poles-earth" structures and calculation methods of line impedance per-unit,bipolar equivalent parameters considering overhead ground wires were obtained in detail;Then an optimal fitting method to approach original Carson integral results was proposed,with the equivalent wave impedance results of two DC circuit structures,the DC line harmonic impedance of different frequency was derived;Finally,depending on field-test DC line impedance results of the Lingzhou-Shaoxing ±800kV UHVDC project,as well as original Carson integral calculation results,the correctness of distribute parameters obtained and the accuracy of optimal fitting method were further demonstrated.关键词
特高压直流/低次谐振/谐波阻抗/线路结构/优化拟合/卡尔松积分Key words
UHVDC/low-frequency resonance/harmonic impedance/line structure/optimal fitting/Carson integral分类
信息技术与安全科学引用本文复制引用
刘心旸,马为民,贾宏杰..长距离直流线路谐波阻抗计算方法与直流谐振特性研究[J].中国电机工程学报,2017,37(18):5313-5320,8.基金项目
国家自然科学基金项目(51277128) （51277128）
国家电网公司科技项目.Project Supported by National Natural Science Foundation of China (51277128) （51277128）
Science and Technology Program of SGCC. （）
