Integrated energy microgrid scheduling method for hydrogen energy-natural gas hybrid energy storage

Abstract

The invention discloses an integrated energy microgrid scheduling method based on hydrogen energy and natural gas hybrid energy storage, and the method comprises the steps: carrying out the modeling of energy equipment of each unit in an integrated energy microgrid based on hydrogen energy and natural gas hybrid energy storage, and obtaining the operation initial information of each unit; determining an energy flow relationship of each unit; establishing an optimization scheduling model based on the environment cost and the operation cost; converting multiple targets into a single target by adopting a weight coefficient method; setting a safety constraint condition; and combining a difference operator in a random fractal search algorithm, and optimizing and solving the established optimalscheduling model to obtain an optimal scheduling strategy. According to the invention, an optimal scheduling scheme with both environmental protection and economy can be obtained for a hydrogen and natural gas hybrid energy storage integrated energy microgrid system, and the stable and efficient operation of the hydrogen and natural gas hybrid energy storage integrated energy microgrid is ensured;the convergence speed can be effectively improved, the algorithm is prevented from falling into local optimum, and the system operation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of micro-grid dispatching, in particular to an integrated energy micro-grid dispatching method for hydrogen energy-natural gas hybrid energy storage. Background technique [0002] In recent years, with the intensification of global warming and environmental pollution, the concept of energy conservation and emission reduction has been deeply rooted in the hearts of the people, and the development of low-carbon, environmentally friendly clean new energy has become the general trend. Microgrid is an organic whole composed of distributed energy, load, energy storage system and central control device. It has the characteristics of small scale, rapid control and adjustment, and can flexibly switch between independent operation and grid-connected operation. An effective way to solve the problem of integrating distributed renewable energy into the distribution network. [0003] In recent years, the existing integra...

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Problems solved by technology

[0003] In recent years, the existing integrated energy micro-grids mostly use new energy sources such as photovoltaics and wind power to build micro-grids, but both photovoltaics and wind power are output-type energy sources, which cannot effectively store electric energy

At present, the commonly used method is to use batteries for energy storage, but this method is restrictive, unable to meet storage and transportation, and cannot guarantee the effective use of energy, resulting in energy waste

Moreover, the existing integrated energy microgrid scheduling method cannot obtain the optimal dispatch of the integrated energy microgrid system with hydrogen-natural gas hybrid energy storage, which is both environmentally friendly and economical, and cannot guarantee the comprehensive energy storage of hydrogen energy-natural gas hybrid energy storage. Stable and efficient operation of energy microgrid

And there are problems such as slower convergence and lower accuracy during calculation

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