A comprehensive energy microgrid planning method considering comprehensive energy supply reliability

Abstract

The invention discloses a comprehensive energy microgrid planning method considering comprehensive energy supply reliability. The method comprises the following steps: establishing an equipment energyefficiency and economy time sequence model in a comprehensive energy microgrid, wherein the time sequence model comprises a fuel gas combined cooling heating and power system model, an energy conversion device model, an electricity storage equipment model and a heat storage equipment model; Establishing a comprehensive energy microgrid optimization planning model, including taking the total costof the comprehensive energy microgrid in the whole life cycle as an objective function, and performing maximum load constraint, power balance constraint, self-sufficiency probability constraint, energy supply equipment operation constraint and energy storage equipment operation constraint; The comprehensive energy microgrid optimization planning comprises equipment configuration and operation scheduling. According to the invention, the energy supply reliability of the comprehensive energy microgrid is analyzed; and the energy supply reliability and economic index of the integrated energy microgrid are taken as objective functions, so that the capacity of equipment in the integrated energy microgrid is optimally configured in a targeted manner on the premise of meeting the energy consumption requirement of a user in the integrated energy microgrid, and the planning economy is improved.

Description

technical field [0001] The invention relates to a comprehensive energy micro-grid planning method. In particular, it relates to a comprehensive energy micro-grid planning method that is suitable for the construction of urban energy stations of public institutions and considers the reliability of comprehensive energy supply. Background technique [0002] Energy is the foundation of human survival and development, and the source of social and economic development. Improving the efficiency of energy utilization and ensuring the effective supply of energy have become an inevitable choice to solve the conflict between energy supply and demand and the contradiction between social development and environmental protection. In recent years, with the continuous deepening of the construction of the energy Internet, the existing mode of separate planning and independent operation of the original energy supply systems has been broken, and the coordinated supply of electricity / gas / heat (...

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Problems solved by technology

[0005] Although researchers have carried out relevant research on the planning of integrated energy microgrids, the existing research has the following problems: First, most of the research objects are still concentrated on the single energy network level represented by electric energy. Relevant methods have been difficult to meet the needs of comprehensive energy collaborative planning; second, in the analysis of reliability, most of them use mathematical analysis methods, which cannot reflect the characteristics of unit equipment and user demand timing; third, the current research has not Consider the differences in energy grades between different energy sources and the resulting supply / storage priorities and load reduction strategies; fourth, although traditional planning methods consider operational issues, most of them are based on system operating costs The lowest comprehensive cost composed of , start-up cost, and fuel cost is the optimization goal, without considering the randomness of unit failure and the reliability of the power system, and the planning and configuration of the integrated energy microgrid should not only consider the economic efficiency under normal operating conditions problems, and the possible risk problems mentioned above in the system should also be considered

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