摘要
区分电力系统中系统侧与用户侧谐波发射水平十分必要。该文提出了基于二元线性回归的系统谐波阻抗及用户谐波发射水平的估算方法。根据此方法,利用在公共联接点测量的各次谐波的电压和电流信号,运用二元线性回归统计可得到系统侧的谐波阻抗,进而计算出用户侧谐波发射水平。相对于“双线性回归法”忽略电阻分量,该文提出的方法能够估计出谐波复阻抗中实部与虚部,更为合理。通过对实验电路仿真分析以及实测数据的分析结果,并对比“波动法”的计算结果,验证了其有效性。
It is necessary to separate the emission level of power system and customers. The paper describes a method for estimating power system harmonic impedance and the customer emission level based on binary linear regression. By using field measurements for harmonic voltages and currents at the connection point of the customer,we can estimate the harmonic impedance of power system, and then compute the contribution of a customer's injection. Relative to the presupposition of Double Linear Regression method that ignores the resistant part of harmonic impedance, it is more reasonable that the method can achieve the real and imaginary parts of harmonic impedance.Finally, through a study on simulation of experimental circuit and engineering practice as well as contrast with the result of Fluctuations method, the correctness and feasibility of the method is further confirmed.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第6期50-53,共4页
Proceedings of the CSEE
基金
国家自然科学基金(51077021)~~
关键词
电力系统
二元线性回归
谐波发射水平估计方法
仿真
Harmonic emission level
Harmonic inpedance
Binary linear regression
Double linear regression
Noninvassive
