A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions

Seyed Mohsen Alavi; Reza Ghazi

doi:10.1186/s41601-022-00224-3

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A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions

Original Research | 更新时间：2026-09-30

- A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions
- A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions
- 现代电力系统保护与控制（英文） 2022年7卷第1期页码：1-11
- 作者机构：
  
  Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad,Iran
- 作者简介：
- 基金信息：
- DOI：10.1186/s41601-022-00224-3
  中图分类号：
- 纸质出版：2022-01-01
- 稿件说明：
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Seyed Mohsen Alavi, Reza Ghazi. A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions[J]. 现代电力系统保护与控制（英文）, 2022,7(1):1-11.

Seyed Mohsen Alavi, Reza Ghazi. A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions[J]. Protection and Control of Modern Power Systems, 2022, 7(1): 1-11.
Seyed Mohsen Alavi, Reza Ghazi. A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions[J]. 现代电力系统保护与控制（英文）, 2022,7(1):1-11. DOI： 10.1186/s41601-022-00224-3.

Seyed Mohsen Alavi, Reza Ghazi. A novel control strategy based on a look-up table for optimal operation of MTDC systems in post-contingency conditions[J]. Protection and Control of Modern Power Systems, 2022, 7(1): 1-11. DOI： 10.1186/s41601-022-00224-3.

摘要

Abstract

Multi terminal VSC-HVDC systems are a promising solution to the problem of connecting offshore wind farms to AC grids. Optimal power sharing and appropriate control of DC-link voltages are essential and must be maintained during the operation of VSC-MTDC systems

particularly in post-contingency conditions. The traditional droop control methods cannot satisfy these requirements

and accordingly

this paper proposes a novel centralized control strategy based on a look-up table to ensure optimal power sharing and minimum DC voltage deviation immediately during post-contingency conditions by considering converter limits. It also reduces destructive effects (e.g.

frequency deviation) on onshore AC grids and guarantees the stable operation of the entire MTDC system. The proposed look-up table is an array of data that relates operating conditions to optimal droop coefficients and is determined according to N-1 contingency analysis and a linearized system model. Stability constraints and contingencies such as wind power changes

converter outage

and DC line disconnection are considered in its formation procedure. Simulations performed on a 4-terminal VSC-MTDC system in the MATLAB-Simulink environment validate the effectiveness and superiority of the proposed control strategy.

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