Reliability evaluation on an integrated electric-gas system considering multiple evaluation indexes

doi:10.3969/j.issn.2097-0706.2023.02.005

Abstract

Abstract:

The wide application of gas turbines drives the coupling of power network and natural gas network， and the coupling puts forward higher requirements on the reliability of integrated electric-gas systems. Setting comprehensive and reasonable indexes is of great significance for the reliability evaluation of the systems. Based on the established optimal load reduction model of integrated electric-gas systems and traditional reliability evaluation indexes，a new reliability evaluation system for integrated systems that takes the coupling level of electricity and gas and the delay characteristics of the gas supply system into consideration is made. Then， the reliability of the integrated system is analyzed from multiple perspectives by Monte Carlo method. Finally， the reliability evaluation of an integrated electric-gas system composed of a 14-node power system and a 10-node natural gas system is tested. The study results show that the overall reliability of the system is improved by considering the delay characteristics of natural gas.The role of increasing gas turbines' capacities on improving the reliability of power systems is effective but limited.

Key words: integrated electric-gas system, gas turbine, power network, natural gas network, reliability assessment, coupling of electricity and gas, Monte Carlo method

CLC Number:

TK018：TM732

KONG Zhenyu, LI Hongzhong. Reliability evaluation on an integrated electric-gas system considering multiple evaluation indexes[J]. Integrated Intelligent Energy, 2023, 45(2): 37-43.

Figures/Tables 6

Fig.1

Fig.2

Table 1

eENS of the IEGS

方案	$e E N S, I E G S$ /(MW·h)
1	290.27
2	266.73

Table 1

Table 2

Fig.3

Fig.4

References 26

[1]	谢典, 高亚静, 刘天阳, 等. “双碳”目标下我国再电气化路径及综合影响研究[J]. 综合智慧能源, 2022, 44(3):1-8. doi: 10.3969/j.issn.2097-0706.2022.03.001
	XIE Dian, GAO Yajing, LIU Tianyang, et al. Study on the impact of re-electrification on the path to carbon peaking and carbon neutralization in China[J]. Integrated Intelligent Energy, 2022, 44 (3): 1-8. doi: 10.3969/j.issn.2097-0706.2022.03.001
[2]	于群, 屈玉清, 石良. 基于相对值法和Hurst指数的电网停电事故自相关性分析[J]. 电力系统自动化, 2018, 42(1):55-60,124.
	YU Qun, QU Yuqing, SHI Liang. Self-correlation analysis of power grid blackouts based on relative value method and Hurst exponent[J]. Automation of Electric Power Systems, 2018, 42 (1): 55-60,124.
[3]	安学民, 孙华东, 张晓涵, 等. 美国得州“2·15”停电事件分析及启示[J]. 中国电机工程学报, 2021, 41(10):3407-3415,3666.
	AN Xuemin, SUN Huadong, ZHANG Xiaohan, et al. Analysis and lessons of texas power outage event on February 15,2021[J]. Proceedings of the CSEE, 2021, 41(10): 3407-3415,3666.
[4]	包铭磊, 杨阳, 丁一, 等. 考虑天然气系统影响的电力系统连锁故障评估[J]. 电网技术, 2019, 43(1): 32-40.
	BAO Minglei, YANG Yang, DING Yi, et al. Assessment of cascading failures in power system considering effects of natural gas system[J]. Power System Technology, 2019, 43(1): 32-40.
[5]	倪伟, 吕林, 向月, 等. 基于马尔可夫过程蒙特卡洛法的综合能源系统可靠性评估[J]. 电网技术, 2020, 44(1): 150-158.
	NI Wei, LÜ Lin, XIANG Yue, et al. Reliability evaluation of integrated energy system based on markov process Monte Carlo method[J]. Power System Technology, 2020, 44(1): 150-158.
[6]	路红池, 谢开贵, 王学斌, 等. 计及多能存储和综合需求响应的多能源系统可靠性评估[J]. 电力自动化设备, 2019, 39(8) :72-78.
	LU Hongchi, XIE Kaigui, WANG Xuebin, et al. Reliability assessment of multi-energy system considering multi-storage and integrated demand response[J]. Electric Power Automation Equipment, 2019, 39(8): 72-78.
[7]	董晓晶, 刘洪, 宫建锋, 等. 考虑多类型综合需求响应的电热耦合能源系统可靠性评估[J]. 电力建设, 2018, 39(11):10-19. doi: 10.3969/j.issn.1000-7229.2018.11.002
	DONG Xiaojing, LIU Hong, GONG Jianfeng, et al. Reliability assessment of coupled electricity-heat energy system considering multi-type integrated demand response[J]. Electric Power Construction, 2018, 39(11):10-19. doi: 10.3969/j.issn.1000-7229.2018.11.002
[8]	江叶峰, 熊浩, 胡宇, 等. 考虑电热综合需求响应的虚拟电厂优化调度[J]. 电力建设, 2019, 40(12): 61-69. doi: 10.3969/j.issn.1000-7229.2019.12.008
	JIANG Yefeng, XIONG Hao, HU Yu, et al. Optimal dispatching of virtual power plants considering comprehensive demand response of electricity and heat loads[J]. Electric Power Construction, 2019, 40(12): 61-69. doi: 10.3969/j.issn.1000-7229.2019.12.008
[9]	王雅丽, 刘洪, 赵娟, 等. 基于网络重构和电热联合需求响应的配电网安全经济调度[J]. 电力建设, 2019, 40(4): 90-97. doi: 10.3969/j.issn.1000-7229.2019.04.011
	WANG Yali, LIU Hong, ZHAO Juan, et al. Distribution network economic dispatch based on network reconfiguration and power-heat combined demand response[J]. Electric Power Construction, 2019, 40(4): 90-97. doi: 10.3969/j.issn.1000-7229.2019.04.011
[10]	徐航, 董树锋, 何仲潇, 等. 基于多能互补的电/热综合需求响应[J]. 电网技术, 2019, 43(2): 480-489.
	XU Hang, DONG Shufeng, HE Zhongxiao, et al. Electro-thermal comprehensive demand response based on multi-energy complementarity[J]. Power System Technology, 2019, 43(2): 480-489.
[11]	胡列翔, 王蕾, 董明枫, 等. 基于改进时间约束Petri 网的综合能源系统运行优化及可靠性评估[J]. 中国电力, 2020, 53(10): 123-132,139.
	HU Liexiang, WANG Lei, DONG Mingfeng, et al. Operation optimization and reliability evaluation of integrated energy system based on improved timing constraint Petri net[J]. Electric Power, 2020, 53(10): 123-132,139.
[12]	邬宏伟, 潘杰锋, 葛少云, 等. 考虑多元信息扰动的新一代信息能源系统供能可靠性分析[J]. 电力建设, 2020, 41(3):3-12. doi: 10.3969/j.issn.1000-7229.2020.03.001
	WU Hongwei, PAN Jiefeng, GE Shaoyun, et al. Analysis of energy supply reliability of the new generation cyber physical energy system considering multi-information disturbance[J]. Electric Power Construction, 2020, 41(3):3-12. doi: 10.3969/j.issn.1000-7229.2020.03.001
[13]	余娟, 马梦楠, 郭林, 等. 含电转气的电-气互联系统可靠性评估[J]. 中国电机工程学报, 2018, 38(3):708-715.
	YU Juan, MA Mengnan, GUO Lin, et al. Reliability evaluation of integrated electrical and natural-gas system with power-to-gas[J]. Proceedings of the CSEE, 2018, 38(3):708-715.
[14]	张宗杰, 鞠峰, 邱天, 等. 基于多状态的天然气长输管道分输站功能可靠性评价方法[J]. 当代化工研究, 2016(10):134-136.
	ZHANG Zongjie, JU Feng, QIU Tian, et al. Functional reliability evaluation method for long distance transmission pipeline of natural gas based on multi state[J]. Modern Chemical Research, 2016(10):134-136.
[15]	RIMKEVICIUS S, KALIATKA A, VALINCIUS M, et al. Development of approach for reliability assessment of pipeline network systems[J]. Applied Energy, 2016, 94:22-33. doi: 10.1016/j.apenergy.2012.01.015
[16]	LI W. Reliability assessment of electric power systems using Monte Carlo methods[M]. Boston: Springer Science & Business Media, 2013.
[17]	SHARAPOV V I, ORLOV M E, KUNIN M V. Reliability analysis of the combined district heating systems[J]. Thermal Engineering, 2015, 62(14):1012-1016. doi: 10.1134/S0040601515140128
[18]	李更丰, 别朝红, 王睿豪, 等. 综合能源系统可靠性评估的研究现状及展望[J]. 高电压技术, 2017, 43(1):114-121.
	LI Gengfeng, BIE Zhaohong, WANG Ruihao, et al. Research status and prospects on reliability evaluation of integrated energy system[J]. High Voltage Engineering, 2017, 43(1):114-121.
[19]	陈娟伟, 余涛, 许悦, 等. 气电耦合综合能源系统供电可靠性评估解析算法[J]. 电力系统自动化, 2018, 42(24):59-69.
	CHEN Juanwei, YU Tao, XU Yue, et al. Analytic method for power supply reliability assessment of electricity-gas coupled energy system[J]. Automation of Electric Power Systems, 2018, 42(24): 59-69.
[20]	桑茂盛, 包铭磊, 丁一, 等. 考虑天然气网影响的电网脆弱线路辨识[J]. 电力系统自动化, 2019, 43(21):34-43.
	SANG Maosheng, BAO Minglei, DING Yi, et al. Identification of vulnerable lines in power grid considering impact of natural gas network[J]. Automation of Electric Power Systems, 2019, 43(21): 34-43.
[21]	LI Q, AN S, GEDRA T W. Solving natural gas loadflow problems using electric loadflow techniques[C]// Proceedings of the North American Power Symposium. Rolla, 2003.
[22]	张儒峰, 姜涛, 李国庆, 等. 考虑电转气消纳风电的电-气综合能源系统双层优化调度[J]. 中国电机工程学报, 2018, 38(19):5668-5678.
	ZHANG Rufeng, JIANG Tao, LI Guoqing, et al. Bi-level optimization dispatch of integrated electricity-natural gas systems considering P2G for wind power accommodation[J]. Proceedings of the CSEE, 2018, 38(19):5668-5678.
[23]	马瑞, 杨汉, 吕振华, 等. 电-气互联下燃气状态对电力系统小干扰稳定的影响[J]. 电力科学与技术学报, 2021, 36(1):3-12.
	MA Rui, YANG Han, LV Zhenhua, et al. Research on the impact of gas status on small signal stability of power system for combined electricity and gas system[J]. Journal of Electric Power Science and Technology, 2021, 36(1): 3-12.
[24]	余娟, 李文沅, 颜伟. 静态电压稳定风险评估[J]. 中国电机工程学报, 2009, 29(28):40-46.
	YU Juan, LI Wenyuan, YAN Wei. Risk assessment of static voltage stability[J]. Proceedings of the CSEE, 2009, 29(28):40-46.
[25]	WU S M, RÍOS-MERCADO R Z, BOYD E A, et al. Model relaxations for the fuel cost minimization of steady-state gas pipeline networks[J]. Mathematical and Computer Modelling, 2000, 31(2-3):197-220.
[26]	马梦楠. 含P2G的电-气互联系统可靠性评估算例数据[EB/OL].(2017-12-19)[2022-10-28]. http://www.cee.cqu.edu.cn/info/1396/3342.htm.

燃气轮机容量/MW	p_LOL	e_ENS /(MW·h)
0	0.080 1	109.26
10	0.060 5	94.96
20	0.056 1	84.56
30	0.053 6	76.48
40	0.051 5	72.69
50	0.050 6	70.05
60	0.050 1	69.15