Comprehensiveenergy system load safety domain evolution characteristic generation method based on a fault coupling propagation process

Abstract

The invention relates to a comprehensive energy system load safety domain evolution characteristic generation method based on a fault coupling propagation process. The method belongs to the technicalfield of comprehensive energy system safety analysis. Specific steps are as follows: firstly, the comprehensive energy system topology change under fault coupling propagation is considered; a comprehensive energy system physical topological model under the normal working condition is constructed; the topological change characteristics of the comprehensive energy system are analyzed based on the Markov process, the saddle node bifurcation evolution process of the comprehensive energy system is analyzed under the topological change, the load safety domain boundary change of the comprehensive energy system is discussed in the Markov process, and finally the load safety domain evolution characteristics of the comprehensive energy system are generated under fault coupling propagation.

Description

technical field [0001] The invention relates to a method for generating evolution characteristics of a load safety domain of an integrated energy system based on a fault coupling propagation process, and belongs to the technical field of safety analysis of an integrated energy system. Background technique [0002] The integrated energy system has become one of the important development trends in the future energy field because of its environmental protection and high energy utilization rate. Among them, the combined cooling, heating and power integrated energy system represented by combined cooling, heating and power is developing rapidly. The joint optimization of cooling, heating and power systems can improve fuel utilization efficiency and save operating costs, but current research on energy flow in coupled systems is mainly focused on power systems, ignoring the impact of each subsystem in the coupled system on the entire integrated energy system. In an integrated energy...

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Problems solved by technology

The types of components are more abundant than circuit breakers and relay protection devices in traditional power systems, and the time constants of different energy systems are inconsistent. It is difficult to unify the physical characteristics of components in a deterministic method. The resulting series of events may also lead to the collapse of the entire integrated energy system

Among them, the gas turbine, the coupling element between the electricity and natural gas system, plays a more prominent role. On the one hand, it obtains unit fuel natural gas through the gas supply path of the natural gas system, and on the other hand, it converts the chemical energy of natural gas into electrical energy and injects it into the power system. If there is a failure, the evil impact on the system is immeasurable

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