Design of Robust Decoupling Controller Between Converters in VSC-HVDC System

被引：0

作者：

Yu Y. ^{[1
]}

Li H. ^{[1
]}

Chen Q. ^{[2
]}

Tian Y. ^{[1
]}

Xu L. ^{[1
]}

Lü S. ^{[1
]}

机构：

[1] Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan

[2] China City Environment Protection Engineering Limited Company, Wuhan

来源：

Li, Hongliang (Leectric@outlook.com) | 1702年 / Science Press卷 / 46期

关键词：

Decoupling control between stations; H-infinity control; Interaction effect; Small-signal model; VSC-HVDC;

D O I：

10.13336/j.1003-6520.hve.20190624012

中图分类号：

学科分类号：

摘要：

The weak inertia of DC line ensures the existence of a complex coupling relationship between converter stations in VSC-HVDC, thus an inter-station controller is needed to weaken the interaction. Firstly, an exact small-signal mathematical model of flexible HVDC transmission system is established, and the global state space equation is obtained. Then, according to the H∞ robust control principle of S/T/KS mixed sensitivity, an appropriate weight function is selected and the decoupling controller between stations of flexible HVDC transmission system is deduced. The high-order controller is reduced to an appropriate order by using the equilibrium truncation method based on the mutual prime factor model and the reduction method of classical control theory, which is beneficial to engineering application. Finally, the electromagnetic transient simulation is carried out to verify that the decoupling controller between stations can be effectively weakened the interaction between two converter stations and improves the dynamic performance and robust stability of the system. © 2020, High Voltage Engineering Editorial Department of CEPRI. All right reserved.

引用

页码：1702 / 1710

页数：8

共 20 条

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