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1.东南大学电气工程学院,江苏省南京市 210096
2.国网湖北省电力有限公司电力科学研究院,湖北省武汉市 430077
3.国网电力科学研究院有限公司(南瑞集团有限公司),江苏省南京市 211106
黄莉(1985—),女,博士研究生,主要研究方向:低压配电网状态感知、计量大数据应用、需求响应及智慧用能服务技术等。E-mail:huangli_jyf@seu.edu.cn
刘昱源(2000—),男,硕士研究生,主要研究方向:低压配电网高级量测及大数据应用技术。E-mail:220222766@seu.edu.cn
周赣(1978—),男,通信作者,教授,主要研究方向:高性能并行计算、低压台区高级量测及智能配用电技术等。E-mail:zhougan2002@seu.edu.cn
收稿:2024-06-16,
修回:2024-11-01,
网络出版:2025-03-03,
纸质出版:2025-07-25
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黄莉,刘昱源,周赣等.基于负荷暂态事件的低压台区户相变识别技术[J].电力系统自动化,2025,49(14):152-162.
HUANG Li,LIU Yuyuan,ZHOU Gan,et al.Identification Technology for Consumer-transformer Relationship and Phase of Low-voltage Distribution Station Area Based on Load Transient Events[J].Automation of Electric Power Systems,2025,49(14):152-162.
黄莉,刘昱源,周赣等.基于负荷暂态事件的低压台区户相变识别技术[J].电力系统自动化,2025,49(14):152-162. DOI: 10.7500/AEPS20240616004.
HUANG Li,LIU Yuyuan,ZHOU Gan,et al.Identification Technology for Consumer-transformer Relationship and Phase of Low-voltage Distribution Station Area Based on Load Transient Events[J].Automation of Electric Power Systems,2025,49(14):152-162. DOI: 10.7500/AEPS20240616004.
低压台区户相变识别技术对于台区运维具有重要意义。然而,现有的信号注入法工程实施难度大,数据驱动法存在识别精度低等问题,都难以大范围推广。为此,文中提出一种全新的基于负荷暂态事件的户相变识别方法,具有识别准确率高、周期短、计算量小的优点。首先,阐述负荷暂态事件的定义、类型及传导特性,分析噪声干扰因素并提出建模思路;然后,构建基于负荷暂态事件的户相变识别模型,提出基于Needleman-Wunsch算法的负荷暂态事件优化匹配方法;进一步,通过计算最优匹配子序列之间的时偏熵,将时钟偏差噪声转化为有效信息,共同实现户相变综合研判。最后,以中国江苏省南京市5个实际台区为例,验证了所提方法的优越性。
The identification technology for consumer-transformer relationship and phase plays an important role in the station area operation and maintenance. However
the existing signal injection method is difficult to implement and the data-driven method has problems such as low identification accuracy
making it difficult to promote on a large scale. Therefore
a novel identification method for the consumer-transformer relationship and phase based on load transient events is proposed. This method features high identification accuracy
a short identification period
and a small computation load. First
the definition
types
and conduction characteristics of load transient events are explained
the noise interference factors are analyzed and the modeling ideas are proposed. Then
an identification model for the consumer-transformer relationship and phase based on load transient events is established
and an optimal matching method for load transient events based on the Needleman-Wunsch algorithm is proposed. Furthermore
by calculating the clock skew information entropy between the optimum matching sub-series
the clock skew noise is transformed into useful information and the comprehensive analysis of the consumer-transformer relationship and phase is jointly achieved. Finally
five practical distribution station areas in Nanjing
Jiangsu Province
China are taken as cases to verify the superiority of the proposed method.
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