Analysis and Improvement of Grounding System for Energy Storage System

2023 13th International Conference on Power, Energy and Electrical Engineering (CPEEE) Pub Date : 2023-02-25 DOI:10.1109/CPEEE56777.2023.10217396

Chen-Han Lin, Kun-Long Chen

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Abstract

In the power system, the grounding system has the functions of stabilizing the voltage, providing the fault current discharge path, providing the reference potential. In this study, the relationship between the communication impact of equipment and the grounding method is discussed when the power conditioning system (PCS) of the energy storage system converts electric energy. For the problem of communication interruption between the monitoring equipment of the energy storage system, the literature search is carried out from the grounding part of the power system, and the possible causes and solutions are analyzed, and the ground potential changes of the energy storage system are analyzed through the system measurement to understand the problems of the grounding system.This research is divided into three parts. First, the modelling, analysis methods and system improvement directions of grounding system research in different fields are collected. Then, for the 100-kW energy storage system installed in our school, the ground potential changes during different switch operations are measured and analyzed. Finally, ground potential changes under different conditions are simulated according to the system grounding recommendations defined in the IEEE Standard.

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储能系统接地系统的分析与改进

在电力系统中，接地系统具有稳定电压、提供故障电流放电路径、提供参考电位等功能。本研究讨论了储能系统电源调节系统(PCS)转换电能时，设备通信影响与接地方式的关系。针对储能系统监控设备之间通信中断的问题，从电力系统接地部分进行文献检索，分析可能的原因和解决方法，并通过系统测量分析储能系统的地电位变化，了解接地系统的问题。本研究分为三个部分。首先，收集了不同领域接地系统研究的建模、分析方法和系统改进方向。然后，针对我校安装的100kw储能系统，测量并分析了不同开关操作时地电位的变化。最后，根据IEEE标准中定义的系统接地建议，模拟了不同条件下的地电位变化。

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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2023 13th International Conference on Power, Energy and Electrical Engineering (CPEEE)

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