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As the key node of urban gas transmission and distribution system, safe and stable operations of gas station are highly dependent on continuous and high-quality electric energy supply. In this paper, the systematic research is carried out combining with the reliability theory and energy storage technologies of electrical power system aiming at the vulnerability of power supply system for key equipment in gas station (take the city gas gate station and LNG peak-shaving station as examples). Firstly, identify such key sensitive loads as compressor, electric drive pressure regulating device, safety instrumented system (SIS) and process control system (PCS) based on the architecture of power supply and distribution system as well as load characteristics in typical gas station; secondly, the influence probability and severity of consequences of such accidents as external power grid failures, internal electrical failures and voltage sag on key loads are with quantitative analysis by establishing vulnerability evaluation model of power supply system combining with the probabilistic risk assessment (PRA) and sequential Monte Carlo simulation; finally, the enhancement strategies taking energy storage system (including but not limited to UPS, flywheel energy storage, super capacitor and hybrid energy storage) as the core are proposed, optimum collocation model of energy storage capacity with the targets of power supply reliability, power quality improvement and full life cycle economy is established as well as emulation proof is carried out with the platforms of ETAP and MATLAB/Simulink.

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燃气场站作为城市燃气输配系统的关键节点，其安全稳定运行高度依赖持续、优质的电能供应。文章针对燃气场站（以城市门站和LNG调峰站为例）关键设备供电系统的脆弱性问题，结合电力系统可靠性理论与储能技术开展系统性研究。首先，基于典型燃气场站供配电架构与负荷特性，识别压缩机、电驱调压装置、安全仪表系统（SIS）、过程控制系统（PCS）等关键敏感负荷；其次，采用概率风险评估（PRA）与时序蒙特卡罗仿真相结合的方法，构建供电系统脆弱性评估模型，量化分析外部电网故障、内部电气故障及电压暂降等事件对关键负荷的影响概率与后果严重程度；最后提出以储能系统（包括但不限于UPS、飞轮储能、超级电容及混合储能）为核心的增强策略，建立以供电可靠性、电能质量改善和全生命周期经济性为目标的储能容量优化配置模型，并利用ETAP和MATLAB/Simulink平台进行仿真验证。

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姜君（1992-），女，吉林省长春市人，工程师，现从事电气电子技术在燃气安全领域的应用研究工作。

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姜君（1992-），女，吉林省长春市人，工程师，现从事电气电子技术在燃气安全领域的应用研究工作。

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