| 利用暂态能量流的超低频振荡在线分析与紧急控制方法 |
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| 引用本文： | 陈磊,路晓敏,陈亦平,闵勇,莫维科,刘映尚.利用暂态能量流的超低频振荡在线分析与紧急控制方法[J].电力系统自动化,2017,41(17):9-14. |
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| 作者姓名： | 陈磊 路晓敏 陈亦平 闵勇 莫维科 刘映尚 |
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| 作者单位： | 清华大学电机工程与应用电子技术系, 北京市 100084; 电力系统及发电设备控制和仿真国家重点实验室, 清华大学, 北京市 100084,清华大学电机工程与应用电子技术系, 北京市 100084; 电力系统及发电设备控制和仿真国家重点实验室, 清华大学, 北京市 100084,中国南方电网电力调度控制中心, 广东省广州市 510623,清华大学电机工程与应用电子技术系, 北京市 100084; 电力系统及发电设备控制和仿真国家重点实验室, 清华大学, 北京市 100084,中国南方电网电力调度控制中心, 广东省广州市 510623,中国南方电网电力调度控制中心, 广东省广州市 510623 |
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| 基金项目： | 国家自然科学基金资助项目(51377002)；中国南方电网有限责任公司科技项目 |
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| 摘 要： | 发电机原动系统阻尼转矩系数为负是导致超低频频率振荡的重要原因,退出负阻尼机组的一次调频可增加系统阻尼平息振荡,因此紧急控制的关键是在线评估机组原动系统阻尼。文中提出了利用暂态能量流的超低频频率振荡在线分析与紧急控制方法,将低频振荡分析中的暂态能量流法拓展应用至超低频频率振荡分析,证明了能量流法与阻尼转矩法在分析原动系统阻尼时的一致性,根据现有广域测量系统数据情况,提出了原动系统阻尼转矩系数的在线评估方法,以及超低频频率振荡紧急控制的流程。仿真结果验证了文中方法的有效性,为超低频频率振荡的在线防控提供了技术手段。
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| 关 键 词： | 超低频频率振荡 有功频率控制 一次调频 小扰动稳定 能量流 阻尼在线评估 紧急控制 |
| 收稿时间： | 2016/12/8 0:00:00 |
| 修稿时间： | 2017/7/12 0:00:00 |
Online Analysis and Emergency Control of Ultra-low-frequency Oscillations Using Transient Energy Flow |
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| CHEN Lei,LU Xiaomin,CHEN Yiping,MIN Yong,MO Weike and LIU Yingshang.Online Analysis and Emergency Control of Ultra-low-frequency Oscillations Using Transient Energy Flow[J].Automation of Electric Power Systems,2017,41(17):9-14. |
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| Authors: | CHEN Lei LU Xiaomin CHEN Yiping MIN Yong MO Weike and LIU Yingshang |
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| Affiliation: | Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Tsinghua University, Beijing 100084, China,Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Tsinghua University, Beijing 100084, China,China Southern Grid Power Dispatching and Control Center, Guangzhou 510623, China,Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Tsinghua University, Beijing 100084, China,China Southern Grid Power Dispatching and Control Center, Guangzhou 510623, China and China Southern Grid Power Dispatching and Control Center, Guangzhou 510623, China |
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| Abstract: | The negative damping torque of the generator''s prime mover system is considered as the major cause of ultra-low-frequency frequency oscillation(ULFFO)and tripping the primary frequency regulation of the units with negative damping can increase the damping of the system and suppress the oscillation. The key to emergency control is online evaluation of damping of prime mover systems. An online analysis and emergency control method of ULFFO based on transient energy flow is proposed. The transient energy flow method useful to the low frequency oscillation analysis is extended to the analysis of ULFFO. The consistency of the energy flow method and the damping torque method in analyzing the prime mover system''s damping in ULFFO is proved. An online evaluation method of the damping torque coefficient of the prime mover system is proposed according to the existing wide-area measurement system data, and the procedure of ULFFO emergency control is given. Simulation results are proof of the effectiveness of the proposed method which provides technical means for online control of ULFFO. |
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| Keywords: | ultra-low-frequency frequency oscillation active power and frequency control primary frequency regulation small disturbance stability energy flow online damping evaluation emergency control |
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