| 引用本文: | 肖固城,唐飞,廖清芬,等.一种可改善失步振荡模式的风电虚拟惯性控制策略[J].电力系统保护与控制,2018,46(13):61-70.[点击复制] |
| XIAO Gucheng,TANG Fei,LIAO Qingfen,et al.A virtual inertia control strategy of wind power to improve the out-of-step oscillation modes[J].Power System Protection and Control,2018,46(13):61-70[点击复制] |
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| 摘要: |
| 高渗透率风电并网导致原有系统等值惯性下降，给电力系统失步振荡后的稳定控制过程带来新的挑战。但是目前尚未有文献将风电虚拟惯性控制应用于电力系统发生失步振荡后的稳定控制领域。提出一种可改善失步振荡模式的风电虚拟惯性控制策略，通过引入风机并网点频率偏差来修改风机有功输出，系统遭受大扰动后，风电机组可持续向系统提供大量功率支援。风电机组通过虚拟惯性控制向系统注入/吸收功率，能有效抑制系统群内功率振荡，使得群内同调，从而改善系统失步振荡模式。仿真结果验证了所提虚拟惯性控制策略的正确性和有效性。 |
| 关键词: 虚拟惯性控制 失步振荡模式 群内不同调 功率支援 |
| DOI：10.7667/PSPC170951 |
| 投稿时间：2017-06-25修订日期：2017-08-09 |
| 基金项目:国家自然科学基金项目资助(51507116); 国家电网公司科技项目资助“考虑第三道防线的规划电网多级网架结构优化方法研究” |
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| A virtual inertia control strategy of wind power to improve the out-of-step oscillation modes |
| XIAO Gucheng,TANG Fei,LIAO Qingfen,LIU Jiale,WANG Chenxu,HE Zhijuan |
| (School of Electrical Engineering, Wuhan University, Wuhan 430072, China;Computer School, Wuhan University, Wuhan 430072, China) |
| Abstract: |
| High permeability wind power integration leads to the equivalent inertia decline of the original system, which brings new challenges to the power system stability control after the system is out-of-step. However, there are few literatures that apply the Virtual Inertia Control (VIC) in the power system stability control after the system is out-of-step. This paper proposes a VIC strategy of wind power to improve the out-of-step oscillation modes. Under the VIC, the Variable Speed Wind Turbine (VSWT) modifies the active output basing on the frequency deviation of the wind power grid connection point. When the system is subjected to severe disturbances, the VSWT provides plenty of active power support to the system. The active power provided by the VSWT under the VIC inhibits the intra group power oscillation. It can realize the process of non-coherent to coherent, thereby improving the out-of-step oscillation modes. Simulation results prove the correctness and effectiveness of the VIC strategy. This work is supported by National Natural Science Foundation of China (No. 51507116) and Science and Technology Project of State Grid “Research on the Optimization of the Multi-level Grid Structure of the Planning Network considering the Third Line of Defense”. |
| Key words: virtual inertia control out-of-step oscillation modes non-coherent generator cluster power support |
