Comparative study of two control strategies of a Multiterminal VSC-HVDC systems

2018 7th International Conference on Systems and Control (ICSC) Pub Date : 2018-10-01 DOI:10.1109/ICOSC.2018.8587777

A. Rekik, G. Boukettaya, Randa Kallel

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引用次数: 9

Abstract

Voltage Source Converter High Voltage Direct Current (VSC_HVDC) is a hopeful technology for future smart grid and offshore applications. It can be used to feed weak networks and can be kept compact, which makes it more appropriated to build connections to offshore wind farms. The feasibility for such applications has been proven by projects all over the world. The development of renewable energies such as offshore wind energy as well as multiplication of HVDC links between the different countries of the Union European create the possibility to build a Multi-terminal HVDC (MTDC) offshore grid which is superimposed on the existing HVAC network.This paper focused on HVDC transmission systems with three terminals considered as the most plausible projects in the future. The main objective of this paper is to demonstrate the controllability of VSC-HVDC transmissions and to discuss on the existing principal controls such as master slave and voltage droop command. Simulation results show the drawback of the traditionnel master slave control and the effectiveness of the voltage droop control method.

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多终端直流直流系统两种控制策略的比较研究

电压源变换器高压直流(VSC_HVDC)是未来智能电网和海上应用的一项有希望的技术。它可以用来为薄弱的电网供电，并且可以保持紧凑，这使得它更适合与海上风力发电场建立连接。世界各地的项目都证明了这种应用的可行性。海上风能等可再生能源的发展，以及欧盟各国之间HVDC连接的增加，为建立一个叠加在现有HVAC网络上的多终端HVDC (MTDC)海上电网创造了可能性。本文主要研究了三终端的高压直流输电系统，认为这是未来最可行的方案。本文的主要目的是论证直流直流输电的可控性，并对现有的主从控制和电压下降命令等主要控制方法进行讨论。仿真结果表明了传统的主从控制方法的缺点和电压下垂控制方法的有效性。

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 7th International Conference on Systems and Control (ICSC)

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