| 海上风电集群与火电打捆外送系统低电压穿越特性 |
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| 引用本文： | 余浩,王盼盼,段瑶,田书新,陈武晖.海上风电集群与火电打捆外送系统低电压穿越特性[J].现代电力,2022,39(6):739-748. |
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| 作者姓名： | 余浩 王盼盼 段瑶 田书新 陈武晖 |
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| 作者单位： | 1.广东电网有限责任公司电网规划研究中心，广东省广州市 510080 |
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| 基金项目： | 南方电网公司科技项目（037700KK52190012 (GDKJXM20198282)） |
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| 摘 要： | 海上风电集群与火电打捆外送系统的低电压穿越问题的研究具有重要的理论和实际意义。基于此，针对某海上风电集群与火电打捆实际规划场景，首先提出了风电集群中非故障风电场会恶化故障风电场低电压穿越的电网环境，风电集群对电网的低电压穿越支撑能力的要求更高。然后，从火电机组对系统短路比的提升作用和火电机组的无功支持作用2个方面，揭示了火电机组对海上风电集群的低电压穿越提升作用。最后，在PSCAD/EMTDC中搭建了某实际规划的海上风电集群与火电打捆外送场景，从时域角度证明上述理论分析的合理性。
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| 关 键 词： | 低电压穿越 风火打捆 短路比 三相短路 无功支撑 |
| 收稿时间： | 2021-12-01 |
Low Voltage Ride Through Characteristics of Bundled Transmission System with Offshore Wind Power Cluster and Thermal Power |
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| Affiliation: | 1.Grid Planning & Research Center, Guangdong Power Grid Co., Ltd., Guangzhou 510080, Guangdong Province, China2.College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi Province, China |
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| Abstract: | It is of significant theoretical and practical meaning to research the low voltage ride through (abbr. LVRT) characteristics of bundled transmission system composed of offshore wind power cluster and thermal power units. For this reason, in allusion to the actual planning scenario of a realistic bundled offshore wind power cluster and thermal power units, firstly, it was proposed that the non-failure wind farm in the offshore wind power cluster might deteriorate the grid environment of LVRT of faulty wind farm, therefore the wind farm cluster made a higher request for the supporting capacity of LVRT of the grid. Secondly, form the two aspects, i.e., the promotion of system short circuit ratio because of thermal power units and reactive support from thermal power units, the promotion of LVRT of offshore wind farm cluster by thermal power units was revealed. Finally, in the platform of PSCAD/EMTDC a scene of bundled power delivery composed of practically planned offshore wind power cluster and thermal power units was built, and the reasonability of abovementioned theoretical analysis was proved from the viewpoint of time-domain. |
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