基于虚拟惯量控制的风电电力系统电压稳定性研究

2. Electric Power Research Institute of China，Urumqi 830011，China） Abstract：The delivery of wind power⁃based power system is the main solution to solve the problem of pow⁃ er consumption in energy⁃rich bases and energy shortage in load centers. With ever increasing of grid⁃con⁃ nected capacity of double⁃fed wind turbines，it is of great significance to study the voltage stability of wind power system. However，the large⁃scale wind power grid connection leads to a reduction in the total rotation⁃ al inertia of the power system and the system stability is reduced. The additional virtual inertial control can be adopted to solve grid connection stability problems. The stability mechanism of wind power system and the additional virtual inertial control strategy of doubly⁃fed wind turbine are analyzed. The DIgSILENT/Pow⁃ erFactory power simulation software is used to get the P-V and Q-V curves of the three wind farms in Hami area so to obtain the active and reactive power margin.The influence of the virtual inertia control on the sys⁃ tem static voltage stability and transient voltage stability is compared and analyzed. It is shown by the simu⁃ lation resultthat the additional virtual inertia control cannot only increase the static voltage stability limit， reduce the active and reactive power sensitivity of the power system，and improve static voltage stability of the whole system，but also suppress abrupt increase of frequency revolution and increase the power，thus im⁃ proving transient voltage stability of entire system. Keywords：wind power system；virtual inertia control；static voltage stability；transient voltage stability
第 40 卷 第 3 期：0182-0188 2019 年 6 月
电力电容器与无功补偿 Power Capacitor & Reactive Power Compensation
DOI：10.14044/j.1674-1757. pcrpc.2019.03.033
Vol.40，No.3：0182-0188 Jun.2019
基于虚拟惯量控制的风电电力系统电压稳定性研究
萨妮耶·麦合木提1，王海云1，张强2，武家辉1，张轩1
（1. 新疆大学电气工程学院教育部可再生能源发电与并网控制工程技术研究中心，乌鲁木齐 2. 国网新疆电力公司电力科学研究院，乌鲁木齐 830011）
830047；
摘 要：含风电电力系统外送是解决能源丰富基地电力消纳问题和负荷中心能源短缺问题的主要 方案。随着双馈风电机组并网容量的不断增大，研究含双馈风电机组的风电电力系统电压稳定性 的意义重大。大规模风电并网后导致电力系统总转动惯量下降，系统稳定性降低，具备附加虚拟惯 量控制的风电机组可改善系统点电压稳定性。分析了风电电力系统稳定性机理和双馈风电机组的 附加虚拟惯量控制策略。利用 DIgSILENT/PowerFactory 电力仿真软件绘制哈密地区三个风电场群 的 P-V、Q-V 曲线得到有功裕度与无功裕度，并对比分析了附加虚拟惯量控制前后对系统静态电压 和暂态电压稳定性的影响。仿真结果表明，附加虚拟惯量控制不仅能提高静态电压稳定极限，降低 电力系统有功无功灵敏度，提高系统静态电压稳定性，而且能抑制频率和转速剧增，增加功率，从而 提高系统暂态电压稳定性。 关键词：风电电力系统；虚拟惯量控制；静态电压稳定；暂态电压稳定
源自文库
Study on Voltage Stability of Wind Power System Based on Virtual Inertia Control Saniye·Maihemuti1，WANG Haiyun1，ZHANG Qiang2，WU Jiahui1，ZHANG Xuan1
（1. Engineering Research Center for Renewable Energy Generation & Grid Control，School of Electrical Engineering，Xinjiang University，Urumqi 830047，China；