摘要
针对上海电网多馈入直流输电系统谐波超标问题,提出了2种分析多馈入直流输电系统谐波相互影响的方法,即求取多馈入直流输电系统的换流站间进行功率归一化后的多馈入交互作用因子和不同逆变站交流滤波器投切方式下各逆变站的谐波指标变化;以上海电网4回直流线路和500kV主网架为背景,采用电磁暂态仿真程序(PSCAD/EMTDC)对上海多馈入直流输电系统进行建模仿真计算,验证了所提方法的合理性和有效性。
In view of over standard harmonic in MIDC system of Shanghai power grid,two kinds of analysis method are put forward for studying the harmonics influence of MIDC system,that is to obtain the corrected multi-infeed interaction factor after power normalization and the inverter station harmonic index change under different inverter AC filter.Based on the data of four HVDC lines and 500kV main network of Shanghai power grid,Shanghai MIDC systems simulation model is established in PSCAD/EMTDC,and simulation calculation results verify the rationality and validity of the proposed methods.
出处
《陕西电力》
2016年第5期49-53,共5页
Shanxi Electric Power
基金
国家电网公司科技项目资助(52094014001T)
关键词
多馈入直流输电系统
多馈入交互作用因子
谐波相互影响
总谐波畸变率
仿真建模
multi-infeed direct current（MIDC）
multi-infeed interaction factor（MIIF）
harmonic interaction
total harmonic distortion ratio
simulation modeling
