Improving HVRT capability of wind farm with ultracapacitor and SVG cooperative control

MO Jisheng; YIN Chunya; QIN Yanhui; DUAN Qingxi; LIU Jiangshan; XIE Chao

doi:10.19666/j.rlfd.202405121

English

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Improving HVRT capability of wind farm with ultracapacitor and SVG cooperative control

Thermal Power Generation Vol. 54, Issue 3, Pages: 22-32(2025)

更新时间：2025-09-28

- Improving HVRT capability of wind farm with ultracapacitor and SVG cooperative control
- 作者机构：
  
  1. 新疆大学电气工程学院
  2. 国网新疆电力有限公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202405121
  CLC： TM614
- Published：2025
- 稿件说明：
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MO Jisheng, YIN Chunya, QIN Yanhui, et al. Improving HVRT capability of wind farm with ultracapacitor and SVG cooperative control[J]. Thermal Power Generation, 2025, 54(3): 22-32.
DOI：

MO Jisheng, YIN Chunya, QIN Yanhui, et al. Improving HVRT capability of wind farm with ultracapacitor and SVG cooperative control[J]. Thermal Power Generation, 2025, 54(3): 22-32. DOI： 10.19666/j.rlfd.202405121.

摘要

针对风电高电压穿越（high voltage ride through

HVRT）能力不足导致风电机组脱网的问题，详细阐述了直流故障引起并网点电压升高最终导致风电机组脱网的内在机理，分析了储能系统和静止无功补偿装置（static var generator

SVG）在HVRT期间的动态无功响应特性；通过对并网点电压进行实时监测，高电压穿越期间可将控制策略优先级分解为：风电场内部无功调节（储能系统和双馈异步风力发电机（doubly fed induction generator

DFIG）协同控制）、SVG无功调节。在此基础上，提出了一种储能系统、DFIG和SVG协同控制策略来提高风电场HVRT能力，同时对故障切除后存在的不利情况进行重新设置电压参考值环节，避免了不必要的无功流动。最后，基于MATLAB/Simulink平台搭建仿真模型，验证了理论分析与控制策略的正确性与有效性。研究结果对充分挖掘风电场自身无功调节能力，极大程度减轻SVG无功补偿负担提供了新思路。

Abstract

Aiming at the problem of wind turbine off-grid due to lack of high voltage ride through(HVRT)capability of wind power

the internal mechanism of wind turbine off-grid due to voltage increase of junction point caused by DC fault is elaborated. The dynamic reactive power response characteristics of energy storage system and static var generator(SVG) during HVRT are analyzed. Through real-time monitoring of the voltage of the junction point

the priority of the control strategy during HVRT crossing is divided into reactive power regulation inside the wind farm(cooperative control of energy storage system and doubly fed induction generator(DFIG)) and SVG reactive power regulation. On this basis

a collaborative control strategy of energy storage system

DFIG and SVG is proposed to improve the HVRT capability of wind farms. At the same time

the voltage reference value for adverse situations after fault removal is reset to avoid unnecessary reactive power flow.Finally

a simulation model is built based on MATLAB/Simulink platform to verify the correctness and effectiveness of the theoretical analysis and control strategy. The research results provide new ideas for fully exploring the reactive power regulation capability of wind farms and greatly reducing the burden of SVG reactive power compensation.

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