Risk Assessment System of Transmission Line Considering Relay Protection Fault

doi:10.3969/j.issn.1000－7229.2016.07.020

Abstract

Abstract: The transmission line plays a role of power transmission and distribution function in the power grid, whose failure will bring enormous influence on the operation of power grid. This paper proposes a risk assessment system with comprehensively considering the transmission line and line protection. We use Newton-Homotopy algorithm to estimate the parameters of Weibull distribution and construct the fault rate model of relay protection; adopt utility function to construct the model of severity including the loss of load, line overload and voltage limit; and use the definition of risk to calculate the risk of transmission line under relay protection equipment fault, scan the weakness of grid, and provide theoretical basis for setting the differential operation strategy. Finally, the calculation and simulation results of the WSCC-9 test system verify the correctness and efficiency of the comprehensive risk assessment system of grid with considering the protection fault characteristics of transmission line.

Key words: transmission line, relay protection equipment, Newton-Homotopy algorithm, Weibull distribution, utility function

CLC Number:

TM 754

GONG Qingwu，LIN Yanzhen. Risk Assessment System of Transmission Line Considering Relay Protection Fault[J]. Electric Power Construction, 2016, 37(7): 141-148.

References

［1］付勇. 电力系统继电保护装置运行可靠性指标的研究［J］. 电力建设,2005,26（10）:43-44，47. FU Yong. Study on operative reliability indices of protective relays in power system ［J］. Electric Power Construction,2005,26（10）:43-44，47. ［2］周孝信. 电力系统可靠性新技术［M］. 北京：中国电力出版社, 2014. ［3］高翔.继电保护状态检修应用技术［M］.北京: 中国电力出版社， 2008 ［4］刘杨. 数值同伦算法理论及其应用［D］.长春：吉林大学,2008. LIU Yang. Theory and applications of Numerical homotopy method［D］. Changchun: Jilin University, 2008. ［5］张新东. 牛顿—同伦分析法求解非线性方程的一个改进［J］. 新疆师范大学学报（自然科学版）, 2010, 29（3）:55-58. ZHANG Xindong. Newton homotopy analysis method for solving nonlinear equations of a modified ［J］. Journal of Xinjiang Normal University（Natural Science Edition）, 2010, 29 （3）: 55-58. ［6］张黎,张波. 电气设备故障率参数的一种最优估计算法［J］. 继电器,2005,33（17）:31-34. ZHANG Li, ZHANG Bo. An algorithm for optimal parameter estimation of the failure rate of electrical equipment ［J］. Relay, 2005,33（17）:31-34. ［7］孙鹏,陈绍辉,张彩庆. 基于Marquardt法参数估计的变电设备寿命周期故障率评估［J］. 电力系统保护与控制,2012,40（1）:85-90. SUN Peng, CHEN Shaohui, ZHANG Caiqing. Assessment of failure rate for substation equipment life cysle based on Marquardt parameter estimation method［J］. Power System Protection and Control, 2012,40（1）:85-90. ［8］杨梅,周喜超. 基于最小二乘综合权重优化模型的风电场电能质量评估［J］. 电力建设,2014,35（9）:93-96. YANG Mei, ZHOU Xichao. Power quality assessment of wind farms based on comprehensive index weight optimization model with least square method［J］. Electric Power Construction, 2014,35（9）:93-96.［9］王则柯，高堂安.同伦方法引论［M］.重庆：重庆出版社，1990. ［10］黄青群，朱志斌，卢钰松. 一般非线性规划的组合同伦牛顿法［J］. 湘潭大学自然科学学报， 2013， 35（1）: 21-24. HUANG Qingqun， ZHU Zhibin， LU Yusong. Combined Homotopy Newton method for nonlinear programming［J］. Natural Science Journal of Xiangtan University， 2013， 35（1）: 21-24. ［11］颜庆津. 数值分析［M］. 北京：北京航空航天大学出版社， 1992. ［12］冯管印，何川，丁坚勇，等.电气设备故障率演化推算综合算法［J］. 武汉大学学报（工学版），2014,47（2）:244-249. FENG Guanyin， HE Chuan， DING Jianyong， et al. Synthesis algorithm of electrical equipment failure rate evolution［J］. Engineering Journal of Wuhan University, 2014, 47（2）:244-249. ［13］罗麟. 高压电网继电保护装置可靠性评估［D］. 北京：华北电力大学， 2014. LUO Lin. Reliability assessment of the high voltage protective device［D］. Beijing: North China Electric Power University, 2014. ［14］金良琼. 两参数Weibull分布的参数估计［D］. 昆明：云南大学， 2010. Jin Liangqiong. Two parameter estimation for Weibull distribution［D］. Kunming:Yunnan University， 2010. ［15］盛骤，谢式千.概率论与数理统计及其应用［M］.北京:高等教育出版社，2004. ［16］张国华, 段满银, 张建华,等. 基于证据理论和效用理论的电力系统风险评估［J］. 电力系统自动化, 2009, 33（23）:1-4. ZHANG Guohua, DUAN Manyin, ZHANG Jianhua, et al. Power system risk assessment based on the evidence theory and utility theory［J］. Automation of Electric Power System, 2009, 33 （23）: 1-4. ［17］韩泽文,苏永清,岳继光,等. 电网脆弱性综合指标建立与评估［J］. 电力建设,2015,36（8）:89-94. HAN Zewen, SU Yongqing, YUE Jiguang, et al. Establishment and assessment of power grid vulnerability comprehensive index ［J］. Electric Power Construction, 2015,36（8）:89-94. ［18］广东电网公司继电保护设备状态评价与风险评估工作方法［R］.广州：南方电网科学研究院,2013. ［19］熊世旺,郭创新,何宇斌,等. 考虑线路介数和well-being风险贡献度的电网脆弱线路评估［J］. 电力建设,2015,36（12）:84-90. XIONG Shiwang, GUO Chuangxin, HE Yubin, et al. Vulnerable line evaluation in power grid considering line betweenness and Well-being risk contribution degree ［J］. Electric Power Construction, 2015,36（12）:84-90. ［20］梁志峰. 2011-2013年国家电网公司输电线路故障跳闸统计分析［J］. 华东电力, 2014, 42（11）:2265-2270. LIANG Zhifeng . Statistical analysis of transmission line fault tripping in state grid corporation of China in 2011-2013［J］. East China Electric Power, 2014, 42 （11）:2265-2270.

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