一种新的光伏并网评价体系

针对光伏并网下母线的电压和频率波动提出了四项评价指标即影响系数、离散度、偏度和最大波动率。关于配电网的谐波含量提出了两项评价指标,即谐波平均总畸变率和谐波总畸变率合格率。对配电网的网络损耗提出了系统网损的改善系数和网损率变化率两项评价指标,然后应用变异系数法求解各项指标的权重,并结合逼近理想解的排序方法（Technique for order preference by similarity to ideal solution,TOPSIS）,形成了一套完整的光伏并网评价体系。最后将所提评价体系应用于评估河南省某地区的光伏接入方案,以选取其最优接入方式。...

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Bibliographic Details
Published in电力系统保护与控制 Vol. 45; no. 2; pp. 105 - 110
Main Author 陈力 胡钋 卫敬宜 卢成城 石少伟 王可
Format Journal Article
LanguageChinese
Published 中国电力科学研究院,湖北武汉,430074%武汉大学电气工程学院,湖北武汉,430072 2017
Subjects
TOPSIS法
变异系数法
并网光伏电站
接入方式
评价指标
变异系数法
access mode
TOPSIS method
TOPSIS法
evaluation index
并网光伏电站
grid-integrated PV generation
评价指标
variation coefficient method
接入方式
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ISSN1674-3415
DOI10.7667/PSPC160129

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Summary:针对光伏并网下母线的电压和频率波动提出了四项评价指标即影响系数、离散度、偏度和最大波动率。关于配电网的谐波含量提出了两项评价指标,即谐波平均总畸变率和谐波总畸变率合格率。对配电网的网络损耗提出了系统网损的改善系数和网损率变化率两项评价指标,然后应用变异系数法求解各项指标的权重,并结合逼近理想解的排序方法（Technique for order preference by similarity to ideal solution,TOPSIS）,形成了一套完整的光伏并网评价体系。最后将所提评价体系应用于评估河南省某地区的光伏接入方案,以选取其最优接入方式。
Bibliography:grid-integrated PV generation; evaluation index; access mode; variation coefficient method; TOPSIS method
CHEN Li1, HU Po2, WEI Jingyi2, LU Chengcheng2, SHI Shaowei2, WANG Ke2 （1. China Electric Power Research Institute, Wuhan 430074, China; 2. School of Electrical Engineering, Wuhan University, Wuhan 430072, China）
For an evaluation system of grid-integrated PV generation is proposed little in former reference,this paper establishes a comprehensive and reasonable evaluation system.Firstly,four indexes are defined to reflect the voltage and frequency fluctuation,namely influence coefficient,discrete degree,skewness coefficient and maximum volatility.Also,evaluation indexes which reflect the total harmonic distortion（THD） in distribution network are put forward,namely mean THD and pass rate.Another two indexes named improvement index of system loss and net loss change rate are proposed to reflect the change of net loss.Then,variation coefficient method is used to obtain the weight of every index.Combined with th
ISSN:1674-3415
DOI:10.7667/PSPC160129