一种基于实测数据的谐波源定位方法

A harmonic sources localization method based on measured data

为了准确划分各谐波源责任以便采用技术及经济手段治理谐波问题,提出了一种基于实测数据的谐波源定位方法。该方法以系统母线的谐波电压幅值及相位作为量测量,考虑一定的建模及测量误差,根据系统各节点的谐波功率与母线阻抗之间的符号关系对可疑母线进行分类。提出定位指标对各节点进行排序,确定最为可能的谐波源位置,减少后期不必要的勘测工作。最后,在ETAP 12.6中建立了IEEE 14节点的算例模型并进行计算验证,计算结果证明了提出方法的有效性。

For dividing harmonic responsibility so that dealing with harmonic problems by using economics means, this paper presents a method to identify the harmonic sources based on the data measured by the harmonic measurement devices. According to the connectivity between each nodes, the optimal number and location of harmonic measurement devices are obtained by using the method combined BPSO and index method. Considering a certain modeling and measurement error, it categorizes the suspect buses based on the direction of harmonic power flow, and proposes localization index to rank the bus in order to reduce the field investigation works which is unnecessary. Finally, the IEEE 14 nodes model in ETAP 12.6 is built and the effectiveness of the method proposed is proved.