发电技术 ›› 2025, Vol. 46 ›› Issue (4): 737-747.DOI: 10.12096/j.2096-4528.pgt.24216

• 大规模新能源并网运行调控关键技术 • 上一篇    下一篇

考虑有功无功协调恢复的风电场高电压穿越策略

莫基晟1, 尹纯亚1, 黄新民2, 韩璐1, 刘江山1   

  1. 1.新疆大学电气工程学院,新疆维吾尔自治区 乌鲁木齐市 830017
    2.国网新疆电力有限公司乌鲁木齐供电公司,新疆维吾尔自治区 乌鲁木齐市 830017
  • 收稿日期:2024-10-12 修回日期:2025-02-05 出版日期:2025-08-31 发布日期:2025-08-21
  • 通讯作者: 尹纯亚
  • 作者简介:莫基晟(1998),硕士研究生,研究方向为新能源并网稳定性分析与控制技术,1171035908@qq.com
    尹纯亚(1994),男,博士,副教授,研究方向为交直流系统稳定性分析与控制技术,本文通信作者,1399132297@qq.com
  • 基金资助:
    国家自然科学基金项目(52367013);新疆维吾尔自治区自然科学基金项目(2022D01C363)

High Voltage Crossing Strategy of Wind Farm Considering Active and Reactive Coordinated Recovery

Jisheng MO1, Chunya YIN1, Xinmin HUANG2, Lu HAN1, Jiangshan LIU1   

  1. 1.College of Electrical Engineering, Xinjiang University, Urumqi 830017, Xinjiang Uygur Autonomous Region, China
    2.State Grid Xinjiang Electric Power Co. , LTD. , Urumqi Power Supply Company, Urumqi 830017, Xinjiang Uygur Autonomous Region, China
  • Received:2024-10-12 Revised:2025-02-05 Published:2025-08-31 Online:2025-08-21
  • Contact: Chunya YIN
  • Supported by:
    National Natural Science Foundation of China(52367013);Natural Science Foundation of Xinjiang Uygur Autonomous Region(2022D01C363)

摘要:

目的 针对直流故障后并网点电压大幅度骤升致使风电场面临严重的高电压穿越(high voltage ride-through,HVRT)问题,提出计及保护动作时间协调配合的“有功优先平衡-无功动态补偿”恢复机制。 方法 基于双馈风机的双闭环控制函数,揭示了转子侧变流器无功响应速度优于网侧变流器的动态特性,在减载模式下,提出考虑有功无功协调恢复的风电场HVRT策略。 结果 通过平衡有功功率与无功功率动态补偿,实现了故障期间电压稳定与能量平衡的双重目标。仿真结果表明,该策略可有效抑制暂态过电压风险,提升风电场HVRT能力。 结论 所提策略通过有功-无功协同调控机制,有效破解了高电压穿越过程中系统功率失衡与设备安全运行的矛盾,为含大规模风电的电力系统暂态电压稳定控制提供了新思路。

关键词: 风力发电, 风电并网, 直流故障, 减载分配策略, 高电压穿越(HVRT), 暂态过电压, 协同调控, 功率失衡

Abstract:

Objectives To address the serious high voltage ride-through (HVRT) problem faced by wind farms as a result of the large voltage surge at the grid-connected point after a DC fault, a recovery mechanism of “active priority balancing - reactive power dynamic compensation” considering the coordination of protection action time is proposed. Methods Based on the double closed-loop control function of doubly-fed wind turbine, the dynamic characteristics of the reactive power response speed of the rotor side converter is better than that of the grid side converter are revealed. Under the load shedding mode, a HVRT strategy of wind farm considering coordinated recovery of active and reactive power is proposed. Results By balancing active power and reactive power dynamic compensation, the dual objectives of voltage stabilization and energy balance during faults are achieved. Simulation results show that this strategy can effectively suppress the risk of transient overvoltage and improve the HVRT capability of wind farms. Conclusions The proposed strategy effectively solves the contradiction between system power imbalance and safe operation of equipment during HVRT through the active-reactive synergistic regulation mechanism, which provides a new idea for transient voltage stabilization control of power systems containing large-scale wind power.

Key words: wind power, wind power integration, DC fault, load shedding allocation strategy, high voltage ride-through (HVRT), transient overvoltage, cooperative regulation, power imbalance

中图分类号: