考虑系统与敏感负荷兼容性的电压暂降指标

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摘要针对电压暂降对用户的影响和电力市场按质论价的需求, 论证了评估电压暂降的必要性, 并对国内外电压暂降评估现状进行了全面而客观的分析。在此基础上, 提出了一种考虑供电系统和敏感负荷兼容性的电压暂降干扰性量化评估方法。该方法从系统的角度考虑的同时, 以ITIC和SEMI F47曲线为参考从敏感负荷的角度考虑, 通过层次分析法(AHP)确定各影响因素的常数权重, 利用灰色关联分析(GRA)求得关联系数, 并与常数权重相结合获取可变权重, 最后得到电压暂降样本与标准电压的关联度, 其值越小表明电压暂降干扰越严重。与电压暂降能量指标相比较得出, 该方法能够精确反映电压暂降真实的干扰水平。

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	雷刚
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	袁晓冬

关键词 ：电压暂降, 兼容性, 量化评估, 层次分析法, 灰色关联分析法, 变权

Abstract：Because of the impact on users caused by voltage sags and the need of making the price by quality in the electric power market, this paper proves the necessity of evaluating voltage sags. On this basis, a voltage sag quantitative evaluation method is presented. In this method, ITIC and SEMI F47 curves are taken as the reference with system and equipment taking into account. The invariable weights and relational coefficients are respectively acquired by means of the analytic hierarchy process (AHP) and the grey relational analysis (GRA). With the combination of relational coefficients and invariable weights, the variable weights are obtained and in the last the relational grades can be calculated. Less the relational coefficients are, more serious the voltage sags are. It shows that the proposed method can reflect the real disturbance levels of voltage sags after comparing with traditional energy indices.

Key words： Voltage sag compatibility quantitative index AHP GRA variable weights

收稿日期: 2008-11-26 出版日期: 2014-03-04

PACS:

TM712

作者简介: 雷刚男, 1984年生, 硕士研究生, 主要研究方向为电能质量评估、分析。顾伟男, 1981年生, 博士, 副教授, 主要从事电力系统运行控制、可再生能源接入技术及电能质量分析控制等方面的研究.

引用本文:

雷刚, 顾伟, 袁晓冬. 考虑系统与敏感负荷兼容性的电压暂降指标[J]. 电工技术学报, 2010, 25(12): 132-138. Lei Gang, Gu Wei, Yuan Xiaodong. A Voltage Sag Index Considering Compatibility Between System and Sensitive Equipment. Transactions of China Electrotechnical Society, 2010, 25(12): 132-138.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2010/V25/I12/132

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