Reliability Evaluation Method for Metro Medium-Voltage Ring-Network Power Supply System
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摘要: 地铁中压环网供电系统起电能分配及传输作用，结构复杂且设备繁多，分析地铁中压环网供电系统可靠性具有重要意义. 本文通过分析地铁中压环网供电系统的拓扑结构和运行方式，采用分区的思想对中压环网供电系统进行区域化、模块化处理，简化复杂系统并提出系统“最小基本单元”的概念，建立系统可靠性评估通用性模型，并运用序贯Monte Carlo法计算中压环网供电系统可靠性评估指标. 通过算例分析可知，在不考虑系统设备磨损的情况下，当抽样次数为50 000次时，求得某条地铁中压环网供电系统稳态可用度为99.996%，验证了通用性模型的可行性.
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关键词:
- 中压环网供电系统 /
- 通用性模型 /
- 可靠性评估 /
- Monte Carlo法
Abstract: Metro medium-voltage ring-network power supply system has a complex structure and various devices, which plays a crucial role in the distribution and transmission of electric energy. The analysis of metro medium-voltage ring network supply system is of great significance. In the analysis of its network structure and operation mode, the idea of partitioning is adopted to deal with the medium-voltage ring-network power supply system in a regional and module manner. Thus, the complex system is simplified and the concept of the minimum basic unit is proposed. A universal model is established for system reliability assessment and sequential Monte Carlo method is used to calculate system reliability evaluation indexes. The case study shows that, if the wear of the system equipment is ignored, with the sampling number of 50 000, the steady-state availability of the power supply system for ametro medium-voltage ring network is 99.996%, which verifies the feasibility of the universal model. -
图 1 中压环网供电系统第2分区部分结构
Figure 1. Partial structure of second division in medium-voltage ring-network power supply system
图 5 中压环网供电系统母线区域FTA模型
Figure 5. FTA model of bus area in medium-voltage ring-network power supply system
图 6 不含分区联络开关的供电分区FTA模型
Figure 6. FTA model of power supply area without zoned connection switch
图 7 含有分区联络开关的供电分区FTA模型
Figure 7. FTA model of power supply area containing zone liaison switch
图 8 中压环网供电系统通用性FTA模型
Figure 8. Universal FTA model of medium-voltage ring-network power supply system
图 9 某中压环网供电系统FTA模型
Figure 9. FTA model of some medium-voltage ring-network power supply system
图 10 中压环网供电系统及其各区域不可用度
Figure 10. Unavailability of medium-voltage ring-network power supply system and its regions
表 1 中压环网供电系统设备故障参数
Table 1. Fault parameters of medium-voltage ring-network power supply system
具体设备 失效率 λ/ × 10−6 修复率 μ 中压断路器 C1～C52 0.285 1/12 分区联络开关 QF1～QF2 1.784 1/12 主变电所中压母线 B131～B142 0.024 1/14 主变电所母联开关 K13～K14 2.511 1/12 牵引变电所母线 B11～B122 20.550 1/14 牵引变电所母联开关 K1～K12 1.784 1/12 中压电缆 D1～D24 21.000 1/14 
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表 2 中压环网供电系统故障指标统计表
Table 2. Fault index statistics of medium-voltage ring-network power supply system
可靠性指标 tMTTR/h tMTBF/（× 106 h） A′/ × 10−6 A/% 中压环网
供电系统13.712 0 36.258 37.818 99.996 0 母线区域 13.993 6 2.027 6.903 99.999 3 供电分区 13.519 8 40.578 29.984 99.997 0 第 1、4 分区 13.538 2 58.685 23.064 99.997 6 第 2、3 分区 13.557 1 1.931 8.654 99.999 1 Ⅰ型连接 8.143 8 0.682 0.159 99.999 9 Ⅱ型连接 13.718 6 62.039 22.205 99.997 8
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YANG Xuemei, JIANG Jinliang. Study on power supply of ring network of 10 kV distribution net- work[C]//2008 China International Conference on Electricity Distribution. Guangzhou: [s.n.], 2008: 1-5. 王开康. 一种适用于城市轨道交通环线的中压网络接线方案[J]. 城市轨道交通研究,2018,21(11): 47-50.WANG Kaikang. A medium voltage network connec- tion scheme suitable for urban rail rings[J]. Urban Mass Transit, 2018, 21(11): 47-50. 王蛟,杨灵芝. 城市轨道交通中压环网大分区供电保护方案比选[J]. 城市轨道交通研究,2018,21(1): 95-97.WANG Jiao, YANG Lingzhi. Comparison and selec- tion of protection scheme for large division power supply in urban rail transit medium voltage ring network[J]. Urban Mass Transit, 2018, 21(1): 95-97. 王一,何奔腾,王慧芳. 基于全寿命状态的设备可靠性研究[J]. 电网技术,2011,35(8): 207-211.WANG Yi, HE Bengteng, WANG Huifang. Research on equipment reliability based on life cycle states[J]. Power System Technology, 2011, 35(8): 207-211. 冯玎,林圣,张奥,等. 基于连续时间马尔可夫退化过程的牵引供电设备可靠性预测方法研究[J]. 中国电机工程学报,2017,37(7): 1937-1946.FENG Ding, LIN Sheng, ZHANG Ao, et al. Research on reliability prediction method for traction power supply equipment based on continuous time Markov degradation process[J]. Proceedings of the CSEE, 2017, 37(7): 1937-1946. 周凯,丁坚勇,田世明,等. 基于小样本性能数据的电气设备可靠性评估与预测方法研究[J]. 电网技术,2018,42(6): 1967-1974.ZHOU Kai, DING Jianyong, TIAN Shiming, et al. Research on assessment and prediction of electrical equipment reliability based on small sample performance data[J]. Power System Technology, 2018, 42(6): 1967-1974. 冯玎,林圣,孙小军,等. 考虑高速铁路负荷特性的牵引变压器可靠性评估[J]. 铁道学报,2017,39(8): 62-69. doi: 10.3969/j.issn.1001-8360.2017.08.009FENG Ding, LIN Sheng, SUN Xiaojun, et al. Reliability Assessment for traction transformer considering load characteristics of high-speed railway[J]. Journal of the China Railway Society, 2017, 39(8): 62-69. doi: 10.3969/j.issn.1001-8360.2017.08.009 孙小军,林圣,冯玎,等. 考虑负荷特性的牵引变压器短期风险评估[J]. 电网技术,2016,40(9): 2817-2823.SUN Xiaojun, LIN Sheng, FENG Ding, et al. Short-time risk evaluation of traction transformer based on loading characteristics[J]. Power System Technology, 2016, 40(9): 2817-2823. 曾德容,何正友,于敏. 地铁牵引变电所可靠性分析[J]. 铁道学报,2008,30(4): 22-27. doi: 10.3321/j.issn:1001-8360.2008.04.005ZENG Derong, HE Zhengyou, YU Min. Reliability analysis of metro' s traction substation[J]. Journal of the China Railway Society, 2008, 30(4): 22-27. doi: 10.3321/j.issn:1001-8360.2008.04.005 林圣,林晓鸿,冯玎. 城市轨道交通牵引变电所继电保护可靠性评估[J]. 西南交通大学学报,2018,53(6): 1102-1109. doi: 10.3969/j.issn.0258-2724.2018.06.002LIN Sheng, LIN Xiaohong, FENG Ding. Reliability evaluation of relay protection for traction substation of urban rail transit[J]. Journal of Southwest Jiaotong University, 2018, 53(6): 1102-1109. doi: 10.3969/j.issn.0258-2724.2018.06.002 FENG Ding, LIN Sheng, YANG Qianqian, et al. Reliability evaluation for traction power supply system of high-speed railway considering relay protection[J]. IEEE Transactions on Transportation Electrification, 2019, 5(1): 285-298. doi: 10.1109/TTE.2018.2870293 胡海涛,高朝晖,何正友,等. 基于FTA和FMEA法的地铁牵引供电系统可靠性评估[J]. 铁道学报,2012,34(10): 48-54. doi: 10.3969/j.issn.1001-8360.2012.10.008HU Haitao, GAO Zhaohui, HE Zhengyou, et al. Reliability evaluation of metro traction power supply system based on FTA and FMEA methods[J]. Journal of the China Railway Society, 2012, 34(10): 48-54. doi: 10.3969/j.issn.1001-8360.2012.10.008 谢红,夏金凤,张华志. 可靠性理论在城市轨道交通供电系统中压环网分区设计中的应用[J]. 城市轨道交通研究,2016,19(2): 83-86.XIE Hong, XIA Jinfeng, ZHANG Huazhi. Reliability theory applied in the design of medium voltage network ring partition in urban rail power supply system[J]. Urban Mass Transit, 2016, 19(2): 83-86. 于松伟. 城市轨道交通供电系统设计原理与应用[M]. 成都: 西南交通大学出版社, 2013. 丁明,张静,李生虎. 基于序贯蒙特卡罗仿真的配电网可靠性评估模型[J]. 电网技术,2004,28(3): 38-42. doi: 10.3321/j.issn:1000-3673.2004.03.009DING Ming, ZHANG Jing, LING Shenghu. A sequential Monte-Carlo simulation based reliability evaluation model for distribution network[J]. Power System Technology, 2004, 28(3): 38-42. doi: 10.3321/j.issn:1000-3673.2004.03.009 LI Kunpeng, YANG Qianqian, CUI Zhen, et al. Reliability evaluation of a metro traction substation based on the Monte Carlo method[J]. IEEE Access, 2019, 7: 172974-172980. doi: 10.1109/ACCESS.2019.2957151 戴志辉,王增平,焦彦军. 基于动态故障树与蒙特卡罗仿真的保护系统动态可靠性评估[J]. 中国电机工程学报,2011,31(19): 105-113.DAI Zhihui, WANG Zengping, JIAO Yanjun. Dynamic reliability assessment of protection syetem based on dynamic fault tree and Monte Carlo simulation[J]. Proceedings of the CSEE, 2011, 31(19): 105-113. 刘柏私,谢开贵,马春雷,等. 复杂中压配电网的可靠性评估分块算法[J]. 中国电机工程学报,2005,25(4): 42-47.LIU Bosi, XIE Kaigui, MA Chunlei, et al. Section algorithm of reliability evaluation for complex medium voltage electrical distribution networks[J]. Proceedings of the CSEE, 2005, 25(4): 42-47. Gerald T H, Torrey J G. Distribution system reliability evaluation using enhanced samples in a Monte Carlo approach[J]. IEEE Transaction on Power Systems, 2010, 25(4): 2006-2009. doi: 10.1109/TPWRS.2010.2045929 -
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