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1.新疆大学电气工程学院,新疆维吾尔自治区乌鲁木齐市 830047
2.国网新疆电力有限公司电力科学研究院,新疆维吾尔自治区乌鲁木齐市 830011
3.输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市400030
4.中国电力科学研究院有限公司,北京市 100192
Received:25 February 2021,
Revised:2021-08-12,
Published Online:17 January 2022,
Published:25 February 2022
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南东亮,王维庆,张陵等.继电保护装置带状拟合寿命模型及其弹性退役决策方法[J].电力系统自动化,2022,46(4):103-111.
NAN Dongliang,WANG Weiqing,ZHANG Ling,et al.Band Fitting Life Model and Flexible Decommissioning Decision Method for Relay Protection Devices[J].Automation of Electric Power Systems,2022,46(4):103-111.
南东亮,王维庆,张陵等.继电保护装置带状拟合寿命模型及其弹性退役决策方法[J].电力系统自动化,2022,46(4):103-111. DOI: 10.7500/AEPS20210225001.
NAN Dongliang,WANG Weiqing,ZHANG Ling,et al.Band Fitting Life Model and Flexible Decommissioning Decision Method for Relay Protection Devices[J].Automation of Electric Power Systems,2022,46(4):103-111. DOI: 10.7500/AEPS20210225001.
电力系统继电保护装置的寿命评估及退役决策对于保障电力系统安全具有重要作用,而继电保护装置的寿命建模及退役决策制定尚无十分有效的方法。采用“浴盆曲线”单线拟合难以反映运行统计数据较大波动的问题,工程实际中继电保护装置退役决策的理论依据不够充分。文中提出了一种刻画继电保护装置失效的带状拟合寿命模型,通过拟合失效数据的两条边界线来描述继电保护设备失效区间,重点反映失效数据集中的区域及其变化趋势,从而反映继电保护装置的寿命变化规律。这种基于失效区间的模型用于退役决策时,既具有明确的边界特征又具有一定范围的弹性,可指导运行部门根据继电保护装置的实际运行情况将退役区间与一次设备的检修更新计划协同决策,具有更强的工程指导意义。结合中国某省级电网运行数据进行分析,验证了所提方法的有效性。
The life assessment and decommissioning decision of relay protection devices in power systems play an important role in ensuring the safety of power systems. However
there is no very effective method for life modeling and decommissioning decision of relay protection devices. It is difficult to reflect the large fluctuation of operation statistical data by single line fitting of the bathtub curve. In engineering practice
the theoretical basis for the decommissioning decision of relay protection devices is not sufficient. This paper proposes a band fitting life model to describe the failure of relay protection devices. The failure interval of relay protection devices is described by fitting two boundary lines of failure data
focusing on the area of the failure data set and its change trend
so as to reflect the life change law of relay protection devices. This failure interval based model not only has clear boundary characteristics
but also has a certain range of elasticity when used in decommissioning decision. It can guide the operation department to make cooperative decisions between the decommissioning interval and the maintenance and renewal plan of primary equipment according to the actual operation of relay protection devices
which has stronger engineering guiding significance. Combined with the operation data of a provincial power grid in China
the effectiveness of the proposed method is verified.
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