基于电源极性和孪生特性匹配的电压骤降源定位

IF 2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Longyue Yang, Zhipeng Cai, Xuejing Xia, Xuanchen Ren, Ze Fan, Dexian Kong, Junyu Chen
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引用次数: 0

摘要

精确定位电压骤降源对于改善电能质量、明确供电和用电双方的责任意义重大。然而,现有的定位模型复杂、计算量大、受测量误差和故障类型的影响,定位效率低、误差大。因此,本文提出了一种基于电源极性和孪生特性匹配的电压下陷源定位方法。该方法首先利用监测点的序列下陷分量干扰无功功率的极性来确定下陷线路。其次,讨论了孪生电力系统的基本实现方法,并结合正负序列下陷分量扰动无功功率定义了孪生特性,建立了孪生数据库。再次,利用谱规范和皮尔逊积矩相关系数定义数据匹配度,并以预设矢量和实际矢量的孪生特性数据匹配度最大化为目标函数,建立矢量源精确定位模型。最后,利用改进的鲸鱼优化算法求解定位模型。基于 IEEE33 节点建模验证了所提方法的正确性和优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Voltage sag source location based on power polarity and twin characteristics matching

Voltage sag source location based on power polarity and twin characteristics matching

Precisely locating the voltage sag sources is significant for improving power quality and clarifying the responsibilities of both power supply and consumption. However, the existing location models are complex, computationally intensive, and influenced by the measurement error and fault type, which have low positioning efficiency and large errors. Therefore, this paper proposes a method for locating voltage sag sources based on power polarity and twin characteristics matching. The method firstly uses the polarity of the sequence sag component disturbance reactive power at the monitoring point to determine the sag line. Secondly, the basic realization method of the twin power system is discussed, and the twin characteristics are defined by combining the positive and negative sequence sag component disturbance reactive power and the twin database is established. Thirdly, the spectral norm and Pearson product-moment correlation coefficient are used to define the data matching degree, and the precise location model of the sag source is established with the objective function of maximizing the data matching between the twin characteristics of the preset and actual sag. Finally, the Improved Whale Optimization Algorithm is used to solve the location model. The correctness and superiority of the proposed method is verified based on IEEE33 node modelling.

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来源期刊
Iet Generation Transmission & Distribution
Iet Generation Transmission & Distribution 工程技术-工程:电子与电气
CiteScore
6.10
自引率
12.00%
发文量
301
审稿时长
5.4 months
期刊介绍: IET Generation, Transmission & Distribution is intended as a forum for the publication and discussion of current practice and future developments in electric power generation, transmission and distribution. Practical papers in which examples of good present practice can be described and disseminated are particularly sought. Papers of high technical merit relying on mathematical arguments and computation will be considered, but authors are asked to relegate, as far as possible, the details of analysis to an appendix. The scope of IET Generation, Transmission & Distribution includes the following: Design of transmission and distribution systems Operation and control of power generation Power system management, planning and economics Power system operation, protection and control Power system measurement and modelling Computer applications and computational intelligence in power flexible AC or DC transmission systems Special Issues. Current Call for papers: Next Generation of Synchrophasor-based Power System Monitoring, Operation and Control - https://digital-library.theiet.org/files/IET_GTD_CFP_NGSPSMOC.pdf
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