Regional energy internet reliability evaluation method considering multivariate energy storage

Abstract

A regional energy internet reliability evaluation method considering multivariate energy storage comprises the steps: establishing mathematical models of all devices in a regional energy internet respectively, wherein the devices in the energy internet comprise a combined heat and power generation unit, a power-to-gas conversion device and a power storage battery; establihsing mathematical modelsof a natural gas subsystem and a thermal subsystem in the energy internet; selecting regional energy internet reliability evaluation indexes; analyzing regional energy internet faults; and carrying out regional energy internet reliability evaluation considering multivariate energy storage. According to the invention, a research object of reliability evaluation can be expanded from a park-level comprehensive energy station to a regional-level energy internet, and the influence of multivariate energy storage resources on reliability evaluation is comprehensively considered, so that the planningand operation of the regional-level energy internet are reasonably guided; in addition, the fault chain reaction between different energy subsystems is considered, and the mutual influence after the faults of the energy subsystems can be effectively recognized and avoided.

Description

technical field [0001] The invention relates to a method for assessing reliability of regional energy internet. In particular, it relates to a reliability evaluation method for regional energy internet that is suitable for multi-energy storage resources such as traditional physical energy storage and pipeline network virtual energy storage, and the failure chain reaction mechanism between multi-energy subsystems. . Background technique [0002] Regional Integrated Energy System (RIES) is a system that integrates different energy sectors such as electricity, natural gas, and heat network, and has received more and more attention due to its wide applicability and construction flexibility. The enhancement of coupling characteristics between multi-energy systems makes reliability assessment more complicated: on the one hand, due to the complementary characteristics of multi-energy sources, the shortage of one energy source can be satisfied by another energy source through energ...

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Problems solved by technology

The enhancement of coupling characteristics between multi-energy systems makes reliability assessment more complicated: on the one hand, due to the complementary characteristics of multi-energy sources, the shortage of one energy source can be satisfied by another energy source through energy conversion equipment; on the other hand, , due to the multi-energy coupling of the energy supply system, the failure of a certain energy system may affect the entire energy system

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