| 基于负载电压阶跃试验的发电机组转动惯量辨识方法 |
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| 引用本文： | 吴跨宇,卢岑岑,顾益磊,熊鸿韬,赵一琰.基于负载电压阶跃试验的发电机组转动惯量辨识方法[J].中国电力,2016,49(2):21-25. |
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| 作者姓名： | 吴跨宇 卢岑岑 顾益磊 熊鸿韬 赵一琰 |
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| 作者单位： | 国网浙江省电力公司电力科学研究院，浙江 杭州 310014 |
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| 摘 要： | 简述了发电机组转动惯量、惯性时间常数和飞轮转矩的物理定义及其对电力系统稳定分析计算的作用和影响。分析推理了PSASP、PSD-BPA和PSS/E发电机模型中采用的惯量参数及相互之间的转换计算方法。从小干扰稳定分析的数学模型出发，推导了发电机组机械惯性参数与本机振荡频率的关系，并在此基础上将现场甩负荷试验和仿真计算相结合，提出了一种基于发电机负载电压阶跃试验的转动惯量仿真辨识方法。最后，基于一台600 MW汽轮发电机组为实际计算范例验证了该方法的有效性和适用性。
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| 关 键 词： | 发电机组 转动惯量 惯性时间常数 飞轮转矩 系统稳定 仿真 辨识 |
| 收稿时间： | 2015-11-08 |
| 修稿时间： | 2016-03-21 |
An Identification Method of Moment of Inertia Based on Generator Load Voltage Step Test |
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| WU Kuayu,LU Cencen,GU Yilei,XIONG Hongtao,ZHAO Yiyan.An Identification Method of Moment of Inertia Based on Generator Load Voltage Step Test[J].Electric Power,2016,49(2):21-25. |
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| Authors: | WU Kuayu LU Cencen GU Yilei XIONG Hongtao ZHAO Yiyan |
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| Affiliation: | State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China |
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| Abstract: | This paper introduces definition and relationship of moment of inertia, inertia time constant and flywheel moment, and their effect on the analysis of power system stability. The conversion among these parameters is analyzed and summarized for different simulation software including PSASP, PSD-BPA and PSS/E. Mathematical relationship between generator mechanical inertia parameters and local oscillation frequency is derived from small signal stability model. An identification method of moment of inertia combining with generator load voltage step test and simulation is proposed. Finally, effectiveness and applicability of proposed method is verified by comparing parameter calculation and load rejection test data on an actual 600 MW steam turbine-generator. |
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| Keywords: | generator moment of inertia inertia time constant flywheel moment power system stability simulation identification |
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