| 新能源电力系统的共模频率分析及其特征量化 |
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| 引用本文： | 高晖胜,辛焕海,黄林彬,许涛,鞠平,秦晓辉,黄伟.新能源电力系统的共模频率分析及其特征量化[J].中国电机工程学报,2021(3):890-899. |
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| 作者姓名： | 高晖胜 辛焕海 黄林彬 许涛 鞠平 秦晓辉 黄伟 |
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| 作者单位： | 浙江大学电气工程学院;国家电力调度控制中心;中国电力科学研究院有限公司;云南电网有限责任公司调度中心 |
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| 基金项目： | 国家重点研发计划(2017YFB0902000);国家自然科学基金项目(U1766206,51922094)。 |
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| 摘 要： | 分析了功率阶跃后新能源电力系统的频率响应特性,提出了可量化系统共模频率(即频率响应的共模分量)特征的实用方法。首先,提出利用具有统一结构的传递函数模型来描述设备频率–有功功率响应的近似方法,在此基础上形成表征系统共模频率响应特性的简化传递函数模型。其次,基于系统的简化传递函数,获得了描述共模频率最低点和平均变化率等特征的解析表达式,并提出形式简单的"跌落深度系数"及"跌落坡度系数"这两个指标来量化频率的特征。最后,通过算例验证了所提出的频率特征量化方法的有效性。
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| 关 键 词： | 频率特征量化 频率最低点 频率平均变化率 频率跌落深度系数 频率跌落坡度系数 |
Characteristic Analysis and Quantification of Common Mode Frequency in Power Systems With High Penetration of Renewable Resources |
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| GAO Huisheng,XIN Huanhai,HUANG Linbin,XU Tao,JU Ping,QIN Xiaohui,HUANG Wei.Characteristic Analysis and Quantification of Common Mode Frequency in Power Systems With High Penetration of Renewable Resources[J].Proceedings of the CSEE,2021(3):890-899. |
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| Authors: | GAO Huisheng XIN Huanhai HUANG Linbin XU Tao JU Ping QIN Xiaohui HUANG Wei |
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| Affiliation: | (College of Electrical Engineering,Zhejiang University,Hangzhou 310027,Zhejiang Province,China;State Power Dispatching Control Center China,Xicheng District,Beijing 100052,China;China Electric Power Research Institute,Haidian District,Beijing 100192,China;Dispatching Center of Yunnan Power Grid Corporation,Kunming 650011,Yunnan Province,China) |
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| Abstract: | This paper analyzed frequency characteristics of power systems with high penetration of renewable resources under power steps, and proposed a practical method for quantifying the characteristics of system common mode frequency(i.e., common mode component of frequency response). Firstly, an approximate method using a transfer function model with a unified structure to describe the frequency-active power response of devices was proposed, and on this basis, a simplified transfer function model describing the system common mode frequency response characteristics was formed. Secondly, based on the simplified transfer function of the system, analytical expressions describing the common mode frequency nadir and the average rate of change of frequency(Ro Co F) were obtained, and two simple metrics, "drop depth coefficient" and "drop slope coefficient" were proposed to quantify frequency characteristics. Finally, simulations were used to verify the effectiveness of the proposed frequency characteristic quantification method. |
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| Keywords: | frequency characteristic quantification frequency nadir average RoCoF frequency drop depth coefficient frequency drop slope coefficient |
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