Reliability Evaluation of Integrated Energy System Based on Coupling Equipment Failure

Due to the complex operating characteristics of multiple energy equipment in the integrated energy system, the reliability assessment of different energy conversion processes is more complicated than that of the power system, natural gas system, or thermal system. At this time, not only need to consider the operating risks between the various subsystems, but also need to pay attention to the problem that the fault may be transmitted through the coupling equipment, which also makes the operation risk of the integrated energy system increase sharply. In response to the above problems, this paper proposes a reliability method for integrated energy system of electricity, natural gas, and heat coupling based on coupling equipment failure to evaluate and analyze the integrated energy system, and the reliability evaluation index is used to quantitatively analyze the possibility of the energy system facing operational risks and the energy supply situation at the time of failure. Finally, a simulation example verifies the effectiveness and practicability of the method proposed in this paper.