主动配电网的谐波源定位方法及谐波责任划分  

Harmonic Source Location Method and Division of Harmonic Responsibility in Active Distribution Network

作　　者：李国栋[1] 李洪安[2] 葛磊蛟[2] 吕金炳[1] 刘亚丽[1] 

机构地区：[1]国网天津市电力公司电力科学研究院,天津300384 [2]天津大学电气与自动化工程学院,天津300072

出　　处：《电力系统及其自动化学报》2016年第11期95-99,129,共6页Proceedings of the CSU-EPSA

基　　金：国网天津市电力公司科技资助项目(KJ15-1-10)

摘　　要：针对主动配电网非线性负荷的谐波特性,提出了一种应用于主动配电网的谐波源定位方法及责任划分规则。首先,建立负荷时域等值模型,利用公共耦合点上电压、电流的物理关系,采用参数辨识法定位主动配电网中的谐波源;其次,通过分析主动配电网中所有谐波源共同作用的母线谐波电压,并计算该母线与谐波源所在节点间的谐波互阻抗(自阻抗)而确认各个谐波源的贡献,从而利用谐波贡献法定量划分各个谐波源的责任。最后,通过18节点主动配电网模型案例,验证该方法的有效性和合理性。Due to the feature of nonlinear load in active distribution network, a harmonic source location method and di- vision of harmonic responsibility in active distribution network are put forward in this paper. Firstly, an equivalent load model in time domain is built. Using the physical relationship between voltage and current at the point of common cou- pling （PCC）, the harmonic source in active distribution network is located using parameter identification method. Sec- ondly, it analyzes the harmonic voltages on the same bus in active distribution network, calculates accurate harmonic mutual impedance between harmonic source buses and the concerned buses, obtains the harmonic contribution for all harmonic sources, and determines the responsibility for all harmonic sources using quantitative analysis method. Final- ly, an 18-node active distribution network is used to verify that the proposed method is reasonable and effective.

关 键 词：主动配电网 谐波源 公共耦合点 非线性度 谐波贡献 

分 类 号：TM72[电气工程—电力系统及自动化]