| 异步联网方式下云南电网超低频振荡的机理分析与仿真 |
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| 引用本文： | 刘春晓,张俊峰,陈亦平,张建新,徐敏,王官宏. 异步联网方式下云南电网超低频振荡的机理分析与仿真[J]. 南方电网技术, 2016, 10(7): 29-34 |
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| 作者姓名： | 刘春晓 张俊峰 陈亦平 张建新 徐敏 王官宏 |
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| 作者单位： | 中国南方电网电力调度控制中心，广州510623,广东电网有限责任公司电力科学研究院，广州510080,中国南方电网电力调度控制中心，广州510623,中国南方电网电力调度控制中心，广州510623,南方电网科学研究院，广州510080,中国电力科学研究院，北京100192 |
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| 摘 要： | 2016年云南电网与南方电网主网将实施异步联网运行方式,然而在异步联网系统试验中进行预设的直流功率提升等试验项目时发现云南电网频率出现长时间超低频率的振荡。通过大量现场试验数据分析,锁定了水电机组调速系统是造成本次振荡的直接原因,并对水电机组调速系统在振荡过程中提供负阻尼的机理进行了分析。在此基础上,利用离线数据仿真成功复现了试验过程中的超低频振荡现象,验证了理论分析的正确性,最后对下一步工作提出了初步建议。
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| 关 键 词： | 异步联网；超低频振荡；调速系统；仿真 |
Mechanism Analysis and Simulation on Ultra Low Frequency Oscillation of Yunnan Power Grid in Asynchronous Interconnection Mode |
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| LIU Chunxiao,ZHANG Junfeng,CHEN Yiping,ZHANG Jianxin,XU Min and WANG Guanhong. Mechanism Analysis and Simulation on Ultra Low Frequency Oscillation of Yunnan Power Grid in Asynchronous Interconnection Mode[J]. Southern Power System Technology, 2016, 10(7): 29-34 |
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| Authors: | LIU Chunxiao ZHANG Junfeng CHEN Yiping ZHANG Jianxin XU Min WANG Guanhong |
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| Affiliation: | CSG Power Dispatching Control Center, Guangzhou 510623, China,Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China,CSG Power Dispatching Control Center, Guangzhou 510623, China,CSG Power Dispatching Control Center, Guangzhou 510623, China,Electric Power Research Institute, CSG, Guangzhou 510080, China and China Electric Power Research Institute, Beijing 100192, China |
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| Abstract: | The asynchronous interconnection mode between Yunnan Power Grid and China Southern Power Grid is planned to be put into practice in 2016. However, during the practical experiment of raising DC power in asynchronous mode, the frequency of Yunnan Power Grid oscillates in ultra low frequency for a long period. In this paper, through detailed analysis of the experiment data, the governor systems of hydropower units are found to be the direct reason of the oscillation, and the mechanism of governor systems offering negative damping during the oscillation is analysed. Furthermore, off line data simulation is carried out to reproduce the process of this practical experiment, the results prove the correctness of the theory, finally some preliminary recommendations are proposed for further work. |
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| Keywords: | asynchronous interconnection ultra low frequency oscillation governor system simulation |
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