| 一种计及参数误差的电网谐波状态估计方法 |
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| 引用本文： | 周念成,谭桂华,赵渊,杨芳,何建森,谢维兵,任小川.一种计及参数误差的电网谐波状态估计方法[J].重庆大学学报(自然科学版),2009,32(2):146-150. |
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| 作者姓名： | 周念成 谭桂华 赵渊 杨芳 何建森 谢维兵 任小川 |
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| 作者单位： | 周念成,谭桂华,赵渊,杨芳,ZHOU Nian-cheng,TAN Gui-hua,ZHAO Yuan,YANG Fang(重庆大学 输配电装备及系统安全与新技术国家重点实验室,重庆,400030);何建森,HE dian-sen(重庆市合川供电有限责任公司,重庆合川,401520);谢维兵,任小川,XIE Wei-bing,REN Xiao-chuan(重庆市电力公司 教育培训中心,重庆,400053)
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| 摘 要： | 综合考虑测量误差和参数误差,提出利用总体最小二乘估计算法进行谐波状态估计.将母线分为非谐波源母线和可能有谐波源的母线,减少了未知状态变量的数目.通过IEEE-14节点谐波测试系统进行了仿真分析,验证了该方法的合理性和可行性.采用Matlab计算程序,随机抽样10 000次,分析了测量误差和参数误差都服从高斯分布时谐波状态估计算法的精度.结果表明,在考虑测量和参数2种误差的情况下,用总体最小二乘法对系统进行谐波状态估计能得到有效的估计结果.
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| 关 键 词： | 状态估计 谐波分析 测量误差 参数误差 总体最小二乘 |
A method for considering parameter errors in power system harmonic state estimation |
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| ZHOU Nian-cheng,TAN Gui-hua,ZHAO Yuan,YANG Fang,HE Jian-sen,XIE Wei-bing,REN Xiao-chuan.A method for considering parameter errors in power system harmonic state estimation[J].Journal of Chongqing University(Natural Science Edition),2009,32(2):146-150. |
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| Authors: | ZHOU Nian-cheng TAN Gui-hua ZHAO Yuan YANG Fang HE Jian-sen XIE Wei-bing REN Xiao-chuan |
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| Institution: | 1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology;Chongqing University;Chongqing 400030;P.R.China;2.Chongqing Hechuan Power Supply Co.Ltd.;Hechuan 401520;3.Education Training Centre of Chongqing Electric Power Corporation;Chongqing 400053;P.R.China |
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| Abstract: | Total least squares(TLS) is proposed to complete harmonic state estimation when parameter and measurement errors are both taken into consideration.The buses are partitioned into subsets of non-source buses and suspicious buses,thereby reducing the number of unknown state variables.The validity and practicability of this approach is validated using the IEEE-14bus harmonic testing system.The estimation precision is analyzed by random sampling 10 000 times in Matlab when measurement errors and parameter errors... |
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| Keywords: | state estimation harmonic analysis measurement errors parameter errors total least squares |
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