基于阻抗约束的谐波溯源方法

WANG Zhiqi

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基于阻抗约束的谐波溯源方法

更新时间：2025-08-13

- 基于阻抗约束的谐波溯源方法
- Automation of Electric Power Systems Vol. 40, Issue 21, Pages: 182-188(2016)
- 作者机构：
  
  四川大学电气信息学院,四川省,成都市,610065
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016
- 稿件说明：
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WANG Zhiqi. [J]. Automation of electric power systems, 2016, 40(21): 182-188.
DOI：

WANG Zhiqi. [J]. Automation of electric power systems, 2016, 40(21): 182-188. DOI：

摘要

提出一种基于阻抗约束的公共连接点(PCC)主谐波源溯源方法。根据系统侧阻抗和用户侧阻抗固有特征

结合PCC处谐波电压电流测量信息

采用相量投影法判断系统侧的主谐波源

利用严格不等式制约判断用户侧的主谐波源。对于两侧阻抗性质不同的更复杂情况

采用几何学余弦定理和严格不等式追溯主谐波源

并从谐波源幅值大小和矢量关系加以验证。利用置信区间去除异常测量数据

对多场景实测数据进行谐波溯源分析

结果表明了文中方法的有效性。

Abstract

Based on the impedance constraints

a new method is proposed to trace the main harmonic source at the point of common coupling(PCC). According to the inherent features of utility and customer impedances and combining with the recorded harmonic voltages and currents at PCC

the vector projection technique is used for judging the main harmonic source of the utility side. Also

the strict inequality constraints are applied to determine the main harmonic source of the customer side. Besides

as for the more complex conditions where the properties of the utility and customer impedances are different

the main harmonic source is traced by the cosine law of geometry and strict inequality. Based on the magnitude and phasor relations of harmonic sources on the two sides

the impedance constraints are worked out. Furthermore

the confidence interval is employed to remove the abnormal monitoring data. The harmonic traceability calculation of multi-scene measured data demonstrates the validity of the proposed method. This work is supported by National Natural Science Foundation of China(No. 51477105)and State Grid Corporation of China.

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