基于DRU的海上风电场构网型变流器故障穿越控制策略研究  

RESEARCH ON FAULT RIDE-THROUGH CONTROL STRATEGY OF GRID-FORMING TYPE CONVERTER FOR OFFSHORE WIND FARMS BASED ON DRU

作　　者：程志江 李帅 杨天翔 艾斯卡尔 房忠 高宇骋 Cheng Zhijiang;Li Shuai;Yang Tianxiang;Aisikaer;Fang Zhong;Gao Yucheng(Engineering Research Center of Renewable Energy Power Generation and Grid-Connected Technology,Ministry of Education,Xinjiang University,Urumqi 830017,China;Goldwind Science&Technology Co.,Ltd.,Urumqi 830026,China)

机构地区：[1]新疆大学可再生能源发电与并网技术教育部工程研究中心,乌鲁木齐830017 [2]金风科技股份有限公司,乌鲁木齐830026

出　　处：《太阳能学报》2025年第1期140-150,共11页Acta Energiae Solaris Sinica

基　　金：新疆维吾尔自治区重大专项(2022A01004-1);自治区重大专项横向课题(202208140017);自治区自然科学基金面上项目(2021D01C046);自治区重点实验室开放课题(2021D04011)。

摘　　要：针对现在故障穿越控制策略的故障判断不成熟、故障点覆盖不全面等问题,提出一种通过电压误差判断故障的自适应控制策略,针对海上交流汇集处多个位置(单机故障和公共线海缆故障)的故障进行分析研究。通过利用直流侧的耗能电阻和自适应控制相结合的故障穿越方案,实现了未故障风电机组在故障期间不脱网运行并且快速恢复功率的传输。仿真实验基于RT-LAB半实物仿真平台搭建。仿真结果所示,该方案在面临对称和非对称故障的情况下能够进行故障穿越,提高了风力发电系统的可靠性。Based on grid-forming wind farm and Diode Rectifier Units(DRU)is currently a hot topic in the development of offshore wind power.During faults on the offshore AC collection side,the rapid response of the offshore wind power system and the quick absorption of redundance power are key technologies to ensure the reliable operation of the system.In response to the issues of immature fault identification and incomplete fault coverage in existing fault ride-through control strategies,this paper proposes an adaptive control strategy that determines faults through voltage error,analyzing faults at multiple locations in the offshore AC collection area(including individual machine faults and common cable faults).In response to the issues of immature fault identification and incomplete fault coverage in existing fault ride-through control strategies,this paper proposes an adaptive control strategy that determines faults through voltage error,analyzing faults at multiple locations in the offshore AC collection side(including individual machine faults and common cable faults).By utilizing a combination of energy-dissipating resistors on the DC side and adaptive control,the fault ride-through scheme allows non-faulted wind turbines to operate without disconnecting from the grid during faults and to quickly recover power transmission.The simulation experiments were built on the RT-LAB hardware-in-the-loop simulation platform.The simulation results show that this scheme can achieve fault ride-through under both symmetrical and asymmetrical faults,improving the reliability of the wind power generation system.

关 键 词：海上风电场 相位控制 自适应调节 低频交流输电 二极管整流单元 故障穿越 

分 类 号：TM614[电气工程—电力系统及自动化]