Cluster-Based Decoupled Voltage Sensitivity Analysis Under Unbalanced Grid Condition

2019 International Conference on Clean Electrical Power (ICCEP) Pub Date : 2019-07-01 DOI:10.1109/ICCEP.2019.8890225

S. Leksawat, E. Ortjohann, T. Premgamone, D. Holtschulte, A. Schmelter, J. Kortenbruck, S. Varada, D. Morton

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Abstract

the modernization of the power grids towards smart grid is currently on the way. To cope with energy transition, decentralization of traditional active grid operation and control to distribution grids is required, as distributed generation (DG) units are present. Clustering power systems approach (CPSA) has been developed to enable consistent decentralized operations in the grids. In this paper, a method of decoupled voltage sensitivity analysis based on the CPSA is proposed to assist the use of the DG units in decentralized areas under unbalanced grid condition. The analysis utilizes only measurement data gathered from phasor measurement units. To perform the analysis method, the impedance model of each area is first determined. Based on the impedance model, the sensitivity analysis of bus voltages and their respective angles can be then conducted. The proposed method is verified by a simulation on a low-voltage distribution grid. The results prove that the proposed method can be efficiently used for decoupled voltage sensitivity analysis.

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不平衡电网条件下基于聚类的解耦电压灵敏度分析

电网现代化向着智能电网的方向发展。随着分布式发电机组的出现，为应对能源转型，需要将传统的有源电网的运行和控制分散到配电网。集群电力系统方法(CPSA)的发展是为了在电网中实现一致的分散运行。本文提出了一种基于CPSA的解耦电压灵敏度分析方法，以辅助分布式地区在电网不平衡条件下的分布式发电机组的使用。该分析仅利用从相量测量单元收集的测量数据。为了执行分析方法，首先确定每个区域的阻抗模型。基于阻抗模型，可以对母线电压及其角度进行灵敏度分析。通过低压配电网的仿真验证了该方法的有效性。结果表明，该方法可以有效地用于解耦电压灵敏度分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 International Conference on Clean Electrical Power (ICCEP)

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