Transient Stability Control Strategy of VSC-MTDC System Based on Reactive Power Regulation

GE Pengjiang; ZHANG Yapeng; QU Gaoqiang; GUO Ning; GAO Yuxi

doi:10.14044/j.1674-1757.pcrpc.2020.06.006

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Transient Stability Control Strategy of VSC-MTDC System Based on Reactive Power Regulation

更新时间：2024-09-14

- Transient Stability Control Strategy of VSC-MTDC System Based on Reactive Power Regulation
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 6, Pages: 37-43(2020)
- 作者机构：
  
  1. 国网宁夏电力有限公司经济技术研究院
  2. 南京南瑞继保电气有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.06.006
  CLC： TM712;TM721.1
- Published：2020，
- 稿件说明：
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[1]葛鹏江,张亚鹏,屈高强,郭宁,高玉喜.基于无功调节的VSC-MTDC系统暂稳控制策略[J].电力电容器与无功补偿,2020,41(06):37-43.

GE PENGJIANG, ZHANG YAPENG, QU GAOQIANG, et al. Transient Stability Control Strategy of VSC-MTDC System Based on Reactive Power Regulation. [J]. Power capacitor & reactive power compensation, 2020, 41(6): 37-43.
[1]葛鹏江,张亚鹏,屈高强,郭宁,高玉喜.基于无功调节的VSC-MTDC系统暂稳控制策略[J].电力电容器与无功补偿,2020,41(06):37-43. DOI： 10.14044/j.1674-1757.pcrpc.2020.06.006.

GE PENGJIANG, ZHANG YAPENG, QU GAOQIANG, et al. Transient Stability Control Strategy of VSC-MTDC System Based on Reactive Power Regulation. [J]. Power capacitor & reactive power compensation, 2020, 41(6): 37-43. DOI： 10.14044/j.1674-1757.pcrpc.2020.06.006.

摘要

针对大容量直流接入可能恶化交流系统暂态稳定问题

提出基于无功调节的VSC-MTDC系统暂稳控制策略。首先基于各VSC站交流侧频率加权值

计算各VSC站换流器无功调节信号

通过调节无功电压

调整附近发电机的电磁制动转矩

从而使得系统保持暂态稳定性;然后基于Lyapunov理论对系统的暂态稳定性进行证明

最后基于PSS/E进行模拟验证。本文所提控制策略可以显著提高系统暂态稳定性。

Abstract

In view of such problem as transient stability deterioration of AC system due to connection of high power DC

the transient stability control strategy of VSC-MTDC system based on reactive power regulation is proposed.Firstly

the reactive power regulation signal of converters in each VSC station is calculated based on the frequency weighted value of each VSC station so to keep the system maintain transient stability by way of adjusting reactive voltage and adjusting electromagnetic braking torque of generator nearby.Then

the transient stability of the system is proved under the control strategy of Lyapunov theory.Finally

it is proved by the simulation based on PSS/E that the control strategy proposed in this paper can significantly improve the transient stability of the system.

关键词

VSC-HVDC暂态稳定性无功功率控制加权平均频率

Keywords

VSC-HVDCtransient stabilityreactive power controlweighted average frequency

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