考虑多评估指标的电-气综合能源系统可靠性评估

doi:10.3969/j.issn.2097-0706.2023.02.005

摘要/Abstract

摘要：

燃气轮机的广泛应用使得电力网与天然气网愈加耦合，同时对电-气综合能源系统的可靠性提出了较高的要求，建立全面、合理的可靠性评估指标对于系统可靠性评估具有重要意义。建立电-气综合能源系统的最优负荷削减模型，在传统可靠性评估指标的基础上进一步根据电-气耦合程度、供气系统延时特性建立电-气综合能源系统可靠性评估指标体系；基于蒙特卡洛法从多角度全面分析联合系统的可靠性；以14节点电力系统和10节点天然气系统组成的电-气综合能源系统为例进行可靠性评估。算例结果表明：考虑天然气延时后，联合系统整体可靠性有所提升；燃气轮机容量的提升使得电力系统可靠性有所提升，但提升作用有限。

关键词: 电-气综合能源系统, 燃气轮机, 电力网, 天然气网, 可靠性评估, 电-气耦合, 蒙特卡洛法

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

中图分类号:

TK018：TM732

孔振宇, 李宏仲. 考虑多评估指标的电-气综合能源系统可靠性评估[J]. 综合智慧能源, 2023, 45(2): 37-43.

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.

图/表 6

图1

图2

表1

IEGS供能不足期望对比

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

表1

表2

图3

图4

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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