Coordinated Control of Natural and Sub-Synchronous Oscillations via HVDC Links in Great Britain Power System

2022 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2022-04-25 DOI:10.1109/td43745.2022.9816918

Yi Zhao, Yuqing Dong, Lin Zhu, Kaiqi Sun, Khaled Alshuaibi, Chengwen Zhang, Yilu Liu, Brian Graham, E. Farantatos, B. Marshall, Md Rahman, O. Adeuyi, S. Marshall, I. Cowan

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引用次数: 1

Abstract

Conventional power oscillation damping (POD) controllers have been designed to be effective in damping either inter-area low-frequency oscillations (LFO) or sub-synchronous oscillations (SSO). For those POD controls, model-based control design method has been widely implemented with wide-area feedback signals from phasor measurement units (PMU). However, the model accuracy of a large realistic power system can hardly be guaranteed, which will finally impact the POD damping performance. In this paper, a measurement-based method is proposed for POD design using High Voltage Direct Current links (HVDC) to realize the coordinated control of both LFO and SSO. For each type of oscillations, a band-pass filter is added to avoid the interactions between different modes. Case studies are carried out on the Great Britain 36-bus power system model with multiple HVDC links in DIgSILENT/PowerFactory. Simulation results demonstrate that the proposed PODs are effective in damping inter-area LFO and SSO simultaneously.

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英国电力系统高压直流线路自然振荡与次同步振荡的协调控制

传统的功率振荡阻尼(POD)控制器可以有效地抑制区域间低频振荡(LFO)或次同步振荡(SSO)。对于POD控制，基于模型的控制设计方法已被广泛应用于相量测量单元(PMU)的广域反馈信号。然而，实际大型电力系统的模型精度难以保证，最终会影响POD的阻尼性能。本文提出了一种基于测量的基于高压直流链路(HVDC)的POD设计方法，实现LFO和SSO的协调控制。对于每种类型的振荡，添加一个带通滤波器以避免不同模式之间的相互作用。在DIgSILENT/PowerFactory中对英国36总线电力系统模型进行了案例研究，该模型具有多个HVDC链路。仿真结果表明，所提出的pod能有效地同时抑制区域间LFO和SSO。

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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2022 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)

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