Energy Storage System Control for Electromechanical Oscillation Mitigation and Its Impact on Inertia and Damping of Power System

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI:10.1109/SPEC.2018.8635832

L. Xiong, Zhao Xu, Liancheng Xiu

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引用次数: 3

Abstract

This paper deduced the model of the synchronous generator (SG) dominated power system with energy storage system (ESS) over the electromechanical time scale. Then, by adopting the method of electrical torque analysis, this paper discussed the ESS control for electromechanical oscillation mitigation and its impact on the inertia and damping characteristics of SG dominated power system. The results show that P and D controllers affect the synchronous and the damping characteristics of the SG dominated system, respectively, with power angle feedback; when the rotor speed of SG is utilized as the feedback signal, P, I and D controllers affect the damping, synchronous and inertia characteristics, respectively. In addition, the principles of different control strategies that influence the system inertia and damping characteristics are explained, rendering a ground foundation for the design of ESS control strategies to enhance the inertia and damping of SG dominated grids. The simulation results show the correctness of the conclusions derived in this paper.

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储能系统的机电振荡控制及其对电力系统惯性和阻尼的影响

本文推导了以同步发电机为主的储能系统在机电时间尺度上的模型。然后，采用电转矩分析的方法，讨论了ESS控制对SG主导电力系统机电振荡的抑制作用及其对系统惯性和阻尼特性的影响。结果表明，在功率角反馈的情况下，P控制器和D控制器分别影响SG主导系统的同步特性和阻尼特性;以SG转子转速作为反馈信号时，P、I、D控制器分别影响阻尼特性、同步特性和惯性特性。此外，阐述了影响系统惯性和阻尼特性的不同控制策略的原理，为设计ESS控制策略以增强SG主导电网的惯性和阻尼奠定了基础。仿真结果验证了所得结论的正确性。

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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2018 IEEE 4th Southern Power Electronics Conference (SPEC)

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