多元件并列运行电力系统供电可靠性评估方法

doi:10.11985/2017.02.008

摘要/Abstract

摘要：

针对多条线路、多台变压器并列而成的供电系统结构特征和运行特性,提出了多线路、多变压器并联系统供电可靠性评估方法。在根据统计数据确认线路和变压器故障均服从指数函数分布的基础上,采用概率分析方法,分别对多条线路并列系统、多台变压器并列系统进行建模,确定多线路、多变压器并列系统可靠度、故障率和失效率。以东莞电网500kV横沥变电站和东莞变电站为例,计算结果表明多线路、多变压器并列的供电系统供电可靠度非常高,但随着运行年限的增加将逐渐减小。

关键词: 500kV变电站, 多线路, 多变压器并联系统, 供电可靠性评估, 故障率失效率

Abstract:

Based on characteristics in construction and operation, a probability assessment method for supply systems with multi-lines and multi-transformers in parallel is proposed in this paper. Using the probability analysis method, a probability model for multi-lines parallel systems and multi-transformers parallel systems is studied on the basis of such hypothesis as that the power transformer and transmission line fault is subjective to exponential function distribution, and the reliability, fault rate, loss efficacy rate of supply systems with multi-lines and multi-transformers in parallel is determined. The 500kV substation in Hengli and Dongguan is taken for an study example, and the result shows that it is high in the probability supply systems with multi-lines and multi-transformers in parallel, however it will be decreasing with the operation period being increasing.

Key words: 500kV substation, supply systems with multi-lines and multi-transformers in parallel, supply probability assessment, fault rate, loss efficacy rate

中图分类号:

TM315

袁炜灯,吴杰康,郑风雷,吴志山,黄强. 多元件并列运行电力系统供电可靠性评估方法[J]. 电气工程学报, 2017, 12(2): 48-50.

Weideng Yuan,Jiekang Wu,Fenglei Zheng,Zhiqiang Xu,Qiang Huang. A Probability Assessment Method for Power Systems With Multiple Devices in Parallel[J]. Journal of Electrical Engineering, 2017, 12(2): 48-50.

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参考文献 25

[1]	郭永基 . 电力系统可靠性分析[M]. 北京: 清华大学出版社, 2003.
[2]	文福拴, 吉兴全, 王钦 . 电力工业改革对电力系统可靠性的影响[J]. 电力科学与技术学报, 2007,22(3):1-11.
	Wen Fushuan, Ji Xingquan, Wang Qin . Influence of electric power industry reform on system reliability[J]. Journal of Electric Power Science and Technology, 2007,22(3):1-11.
[3]	Endrenyi J . Three state models in power system reliability evaluation[J]. IEEE Transactions on Power Apparatus and Systems, 1971,90(4):1909-1916.
[4]	王世香, 高仕斌 . 蒙特卡罗方法在变电站综合自动化可靠性评估中的应用[J]. 电网技术, 2006,30(5):96-100.
	Wang Shixiang, Gao Shibin . Application of Monte Carlo method in reliability evaluation of integrated substation automation[J]. Power System Technology, 2006,30(5):96-100.
[5]	Billinton R, Chen H, Zhou Jiaqi . Generalized XT+2 state system Markov model for station-oriented reliability evaluation[J]. IEEE Transactions on Power Systems, 1997,12(4):1511-1517.
[6]	Billinton R, Chen H, Zhou Jiaqi . Individual generating station reliability assessment[J]. IEEE Transactions on Power Systems, 1999,14(4):1238-1244.
[7]	谢开贵, 董百强, 赵霞, 等 .大型 ( 变)电站电气主接线可靠性综合分析系统[J]. 电力系统自动化, 2006,30(15):89-92.
	Xie Kaigui, Dong Baiqiang, Zhao Xia , et al. Design and application of reliability evaluation software for power stations[J]. Automation of Electric Power Systems, 2006,30(15):89-92.
[8]	别朝红, 王锡凡 . 抽水蓄能电站主接线的可靠性综合评估[J]. 电力系统自动化, 2006,30(9):9-14.
	Bie Zhaohong, Wang Xifan . Integrated reliability evaluation of bus system arrangement for the pumped storage power stations[J]. Automation of Electric Power Systems, 2006,30(9):9-14.
[9]	束洪春, 胡泽江, 张静芳 , 等. 800 kV 换流站主接线可靠性评估[J]. 电力系统自动化, 2008,32(19):35-39.
	Shu Hongchun, Hu Zejiang, Zhang Jingfang , et al. Reliability evaluation for main electrical scheme of a 800 kV converter station[J]. Automation of Electric Power Systems, 2008,32(19):35-39.
[10]	宋晓通, 谭震宇 . 基于最优抽样与选择性解析的电力系统可靠性评估[J]. 电力系统自动化, 2009,33(5):29-33.
	Song Xiaotong, Tan Zhanyu . Power system reliability evaluation based on optimal sampling and selective analysis algorithm[J]. Automation of Electric Power Systems, 2009,33(5):29-33.
[11]	杨汾艳, 兑潇玮, 唐景星 , 等. 考虑站网协调的500 kV 终端变电站可靠性评估[J]. 电网技术, 2013,37(3):847-854.
	Yang Fenyan, Dui Xiaowei, Tang Jingxing , et al. 500 kV terminal substation's reliability assessment considering coordination between power grid and substation[J]. Power System Technology, 2013,37(3):847-854.
[12]	Billinton R, Chen H, Zhou J . Individual generation station reliability assessment[J]. IEEE Transactions on Power Systems, 1999,14(4):1238-1244.
[13]	鲁宗相, 郭永基 . 水电站电气主接线可靠性评估[J]. 电力系统自动化, 2001,25(18):16-19.
	Lu Zongxiang, Guo Yongji . Reliability evaluation of hydroelectric power station bus systems arrangement[J]. Automation of Electric Power Systems, 2001,25(18):16-19.
[14]	丁雪成, 胡海涛, 何正友 , 等. 计及维修因素的牵引变电站电气主接线可靠性分析[J]. 电网技术, 2011,35(10):117-123.
	Ding Xuecheng, Hu Haitao, He Zhengyou , et al. Analysis on reliability of main connection of traction substation considering influence of maintenance[J]. Power System Technology, 2011,35(10):117-123.
[15]	查申森, 郑建勇, 胡继军 . 基于全寿命周期理念的500 kV 变电站初期主接线选择[J]. 电网技术, 2010,34(3):117-122.
	Zha Shensen, Zheng Jianyong, Hu Jijun . Selection of main electrical connection of a 500 kV substation in initial stage based on idea of life cycle[J]. Power System Technology, 2010,34(3):117-122.
[16]	谢绍宇, 王秀丽, 王锡凡 , 等. 自适应重要抽样技术在发输电系统可靠性评估中的应用[J]. 电力系统自动化, 2010,34(5):13-17.
	Xie Shaoyu, Wang Xiuli, Wang Xifan , et al. A dynamic aggregation method for induction motors based on their coherent characteristics[J]. Automation of Electric Power Systems, 2010,34(5):13-17.
[17]	赵渊, 张进, 芦晶晶 , 等. 大电网可靠性评估的卷积计算模型[J]. 电网技术, 2013,37(9):2466-2473.
	Zhao Yuan, Zhang Jin, Lu Jingjing , et al. A convolution model for bulk power grid reliability evaluation[J]. Power System Technology, 2013,37(9):2466-2473.
[18]	孙元章, 程林, 刘海涛 . 基于实时运行状态的电力系统运行可靠性评估[J]. 电网技术, 2005,29(15):6-12.
	Sun Yuanzhang, Cheng Lin, Liu Haitao . Power system operational reliability evaluation based on real-time operating state[J]. Power System Technology, 2005,29(15):6-12.
[19]	程林, 何剑, 孙元章 . 线路模型参数对电网运行可靠性评估影响[J]. 电网技术, 2006,30(13):8-13.
	Cheng Lin, He Jian, Sun Yuanzhang . Impact of transmission line's real-time reliability model parameter upon power system operational reliability evaluation[J]. Power System Technology, 2006,30(13):8-13.
[20]	Billinton R, Wang P . Reliability network equivalent approach to distribution system reliability evaluation[J]. IEE Proceedings of Generation, Transmission and Distribution, 1998,145(2):149-153.
[21]	Allan R N, Billinton R ,De Oliveira M F. An efficient algorithm for deducing the minimal cuts and reliability indices of a general network configuration[J]. IEEE Transactions on Reliability, 1976,25(4):226-233.
[22]	赵华, 王主丁, 谢开贵 , 等. 中压配电网可靠性评估方法的比较研究[J]. 电网技术, 2013,37(11):3295-3302.
	Zhao Hua, Wang Zhuding, Xie Kaigui , et al. Comparative study on reliability assessment methods for medium voltage distribution network[J]. Power System Technology, 2013,37(11):3295-3302.
[23]	梁惠施, 程林, 刘思革 . 基于蒙特卡罗模拟的含微网配电网可靠性评估[J]. 电网技术, 2011,35(10):76-81.
	Liang Huishi, Cheng Lin, Liu Sige . Monte Carlo simulation based reliability evaluation of distribution system containing microgrids[J]. Power System Technology, 2011,35(10):76-81.
[24]	孔涛, 程浩忠, 李钢 , 等. 配电网规划研究综述[J]. 电网技术, 2009,33(19):92-99.
	Kong Tao, Cheng Haozhong, Li Gang , et al. Review of power distribution network planning[J]. Power System Technology, 2009,33(19):92-99.
[25]	程林, 焦岗, 田浩 . 可靠性与经济性相协调的配电网规划方法[J]. 电网技术, 2010,34(11):106-110.
	Cheng Lin, Jiao Gang, Tian Hao . A method of distribution network planning with coordination of reliability and economics[J]. Power System Technology, 2010,34(11):106-110.

运行年限 /年	并联线路			并联变压器			系统
运行年限 /年	可靠度	失效率 /(次/年)	平均失效率 /(次/年)	可靠度	失效率 /(次/年)	平均失效率 /(次/年)	可靠度	失效率 /(次/年)	平均失效率 /(次/年)
1	0.999 992	0.000 045	0.000 552	0.999 999	0.000 004	0.000 047	0.999 991	0.000 049	0.000 599
2	0.999 664	0.000 861	0.000 511	0.999 986	0.000 028	0.000 038	0.999 650	0.000 889	0.000 549
3	0.997 513	0.003 929	0.000 490	0.999 931	0.000 087	0.000 038	0.997 445	0.004 016	0.000 528
4	0.990 802	0.010 096	0.000 482	0.999 796	0.000 191	0.000 034	0.990 601	0.010 287	0.000 516
5	0.976 639	0.019 111	0.000 480	0.999 533	0.000 345	0.000 031	0.976 183	0.019 456	0.000 510
6	0.953 024	0.030 080	0.000 472	0.999 090	0.000 551	0.000 028	0.952 157	0.030 632	0.000 500
7	0.919 329	0.041 993	0.000 470	0.998 414	0.000 811	0.000 027	0.917 871	0.042 803	0.000 496
8	0.876 224	0.054 015	0.000 468	0.997 454	0.001 121	0.000 026	0.873 993	0.055 136	0.000 493
9	0.825 320	0.065 574	0.000 467	0.996 163	0.001 479	0.000 024	0.822 153	0.067 053	0.000 492
10	0.768 732	0.076 330	0.000 466	0.994 494	0.001 881	0.000 024	0.764 500	0.078 211	0.000 491

运行年限 /年	并联线路			并联变压器			系统
运行年限 /年	可靠度	失效率 /(次/年)	平均失效率 /(次/年)	可靠度	失效率 /(次/年)	平均失效率 /(次/年)	可靠度	失效率 /(次/年)	平均失效率 /(次/年)
1	1.000 000	0.000 001	0.000 121	0.999 999	0.000 004	0.000 047	0.999 999	0.000 005	0.000 168
2	0.999 977	0.000 080	0.000 083	0.999 986	0.000 028	0.000 038	0.999 962	0.000 108	0.000 121
3	0.999 663	0.000 708	0.000 072	0.999 931	0.000 087	0.000 038	0.999 595	0.000 795	0.000 110
4	0.998 073	0.002 800	0.000 064	0.999 796	0.000 191	0.000 034	0.997 870	0.002 991	0.000 098
5	0.993 322	0.007 162	0.000 060	0.999 533	0.000 345	0.000 031	0.992 858	0.007 507	0.000 090
6	0.983 050	0.014 029	0.000 056	0.999 090	0.000 551	0.000 028	0.982 155	0.014 581	0.000 085
7	0.965 143	0.023 044	0.000 053	0.998 414	0.000 811	0.000 027	0.963 612	0.023 855	0.000 080
8	0.938 314	0.033 517	0.000 052	0.997 454	0.001 121	0.000 026	0.935 926	0.034 638	0.000 078
9	0.902 353	0.044 703	0.000 051	0.996 163	0.001 479	0.000 024	0.898 890	0.046 181	0.000 075
10	0.858 044	0.055 968	0.000 051	0.994 494	0.001 881	0.000 024	0.853 320	0.057 848	0.000 075