作者：丁凯1, 胡畔1, 李伟1, 谭亚欧2, 肖先勇2, 汪颖2
作者单位：1. 国网湖北省电力有限公司电力科学研究院，湖北 武汉 430077;
2. 四川大学电气工程学院，四川 成都 610065
关键词：电压暂降;信息分配与扩散;经济损失;损失评估
摘要：
为解决信息缺失对电压暂降经济损失评估的影响，该文提出一种基于信息分配与扩散理论的电压暂降经济损失模糊评估模型，采用信息分配理论对电压暂降严重程度指标数据进行模糊化，结合所求模糊关系对电压暂降电网侧与用户侧之间的关联关系近似建模，在信息缺失的场景下实现基于有限样本的经济损失近似评估。通过增加模糊信息来填补样本数据间的空缺，能够克服信息缺失对评估的影响。对实际数据进行验证，结果表明所提方法的评估结果误差较小，有助于为用户生产决策提供数据支持与参考依据，具有重要的实际意义与应用价值。
Fuzzy assessment method for economic losses of voltage sag considering lack of information
DING Kai1, HU Pan1, LI Wei1, TAN Yaou2, XIAO Xianyong2, WANG Ying2
1. Electric Power Research Institute of State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China;
2. College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Abstract: In order to solve the impact of information's lack on the assessment of sag economic losses, this paper proposes a voltage sag economic losses assessment model based on information distribution and diffusion theory. Firstly, the general method of voltage sag economic losses assessment is explained, and the specific problems caused by the lack of information are summarized. Secondly, the principle of information distribution and diffusion theory is explained. Based on the information diffusion theory, the fuzzy relationship matrix of severity and economic losses is established. Then, the information distribution theory is used to fuzzify the severity index data, and the economic losses of the existing sample is assessed in combination with the requested fuzzy relationship. Finally, the actual data is analyzed, and the results show that the proposed method has less error in the assessment results. The proposed method can quickly provide data support and reference basis for users’ production decision in the early stage of voltage sags, which has important practical significance and application value.
Keywords: voltage sag;information distribution and diffusion;economic losses;losses assessment
2020, 46(7):46-53 收稿日期: 2020-06-05;收到修改稿日期: 2020-07-06
基金项目: 国家电网公司总部科技项目（52153218000B）
作者简介: 丁凯(1974-),男,湖北武汉市人,高级工程师,博士,研究方向为电力调度管理
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