基于广义比例故障率模型的电网安控装置可靠性评估方法  

Reliability evaluation method of power network security control devices based on generalized proportional failure rate model

作　　者：赵启 王开科 郭小龙 冯小萍 任祖怡[3] 陶睿 欧阳金鑫[4] ZHAO Qi;WANG Kaike;GUO Xiaoong;FENG Xiaoping;REN Zuyi;TAO Rui;OUYANG Jinxin(Electric Power Research Institute of State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830011,China;State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830011,China;Nanjing Narui Relay Electric Co.,Ltd.,Nanjing 211102,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Chongqing 400044,China)

机构地区：[1]国网新疆电力有限公司电力科学研究院,新疆乌鲁木齐830011 [2]国网新疆电力有限公司,新疆乌鲁木齐830011 [3]南京南瑞继保电气有限公司,江苏南京211102 [4]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400044

出　　处：《电工电能新技术》2023年第8期87-94,共8页Advanced Technology of Electrical Engineering and Energy

摘　　要：安全稳定控制装置作为电网保护系统的一部分,其运行可靠性一直受到广泛的研究。由于装置结构、运行功能等区别,一次设备和继电保护的可靠性评估方法难以直接应用于安控装置。为了实现安控装置的可靠性评估,本文提出了基于广义比例故障率模型的电网安控装置可靠性评估方法。利用协变量体现非内部因素对装置故障率的影响,构建故障率模型总结装置运行规律,并基于采集到的历史运行数据和状态监测量,通过拟合的方式,计算威布尔分布参数。基于计算所得参数,求解安控装置可靠性评价指标中的可靠度与复合故障概率,并评估安控装置的可靠性水平。最后,利用样本装置进行算例分析,证明本文方法在安控装置可靠性评估过程中的可行性。As a part of the power grid protection system,the operation reliability of the security and stability control device has been widely studied.Due to the difference of device structure and operation function,the reliability eval-uation methods of primary equipment and relay protection are difficult to be directly applied to security control de-vices.In order to realize the reliability evaluation of security control devices,this paper proposes a reliability evalu-ation method of power grid security control devices based on generalized proportional failure rate model.The two pa-rameter Weibull distribution and covariates are combined to build a failure rate model that conforms to the operation rules of the device.Based on the collected historical operation data and state monitoring quantity,the Weibull dis-tribution parameters are calculated by fitting.By using the above parameters,the reliability evaluation indexes of safety control devices,such as reliability function and composite failure probability,can be obtained to realize the reliability evaluation of safety control devices.Finally,the sample device is used to analyze an example to prove the feasibility of this method in the process of reliability evaluation of safety control devices.

关 键 词：安控装置 参数拟合 故障率 可靠性评估 

分 类 号：TM77[电气工程—电力系统及自动化]