On-line evaluation method of wind farm off-grid risk in power system stability control

被引：0
|
作者：
Li Z. [1 ]
Zhang X. [2 ]
Chen S. [2 ]
Ren Z. [2 ]
Xia S. [2 ]
Wang J. [2 ]
机构：
[1] Nanjing Institute of Technology, Nanjing
[2] NR Electric Co., Ltd., Nanjing
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2020年 / 48卷 / 20期
基金：
中国国家自然科学基金;
关键词：
Cut-off strategy; Evaluation criteria; Off-grid risk factor; On-line; Wind farm;
D O I：
10.19783/j.cnki.pspc.200634
中图分类号：
学科分类号：
摘要：
Green new energy is developing rapidly, with increasing integration in a clean and efficient wind power industry. However, large-scale off-grid events of wind turbines have occurred from time to time, posing new challenges to the level of control of new energy sources. A method is proposed for an online evaluation criterion for off-grid risk to deal with the difficulty of coordinating the steady-state cut-off strategy with wind power off-grid and the difficulty in judging the off-grid index. Based on the electrical quantity and protection action information of each unit, the risk of an off-network under low-voltage-ride-through mode of wind farm is evaluated taking the wind farm as a whole. The method realizes panoramic monitoring and evaluation of the wind farm fault process, laying the foundation for precise control and cut-off execution. Finally, the effectiveness of the proposed de-networking risk assessment criteria is verified by simulation. © 2020, Power System Protection and Control Press. All right reserved.
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页码：162 / 169
页数：7
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