| 引用本文: | 李祖明,张星宇,陈松林,等.安稳系统中风电脱网风险在线评价指标[J].电力系统保护与控制,2020,48(20):162-169. |
| LI Zuming,ZHANG Xingyu,CHEN Songlin,et al.On-line evaluation method of wind farm off-grid risk in power system stability control[J].Power System Protection and Control,2020,48(20):162-169 |
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| 摘要: |
| 近年来，我国绿色新能源产业迅猛发展，清洁高效的风电产业并网增加，但风电机组大规模脱网的事件仍有偶发，对新能源的管理水平和安全控制提出了新的挑战和要求。针对稳控切机策略与风电场脱网配合难以协调和脱网指标难以评判的问题，提出了一种在线评判风电场脱网风险的有效方法。基于各机组电气量以及保护动作信息构建动态脱网危险因子，并将整个风电作为整体，评估风电场低电压穿越模式下的脱网风险，为新能源机组精益控制和安全稳定控制系统的切机优化策略建立理论依据。最后通过仿真分析验证了所提出的脱网危险评判标准的可行性及有效性。 |
| 关键词: 风电场 脱网风险 在线 评价指标 切机策略 |
| DOI：DOI: 10.19783/j.cnki.pspc.200634 |
| 分类号: |
| 基金项目:国家自然科学基金青年项目资助(51507077) |
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| On-line evaluation method of wind farm off-grid risk in power system stability control |
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LI Zuming, ZHANG Xingyu, CHEN Songlin, REN Zuyi, XIA Shangxue, WANG Junchao
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(1. Nanjing Institute of Technology, Nanjing 211167, China; 2. NR Electric Co., Ltd., Nanjing 211102, China)
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| Abstract: |
| 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.
This work is supported by Youth Fund of National Natural Science Foundation of China (No. 51507077). |
| Key words: wind farm off-grid risk factor on-line evaluation criteria cut-off strategy |
