Energy hub modeling method considering solid oxide fuel cell and electricity-to-gas

Abstract

The invention relates to an energy hub modeling method considering a solid oxide fuel cell and electricity-to-gas, which comprises the following steps of: S1, researching an electricity-to-gas model,a hydrogen storage tank model and a solid oxide fuel cell model before respectively establishing models for conversion equipment; S2, constructing an electricity-to-gas conversion model and a hydrogenstorage tank model; S3, for the solid oxide fuel cell model, describing an SOFC power generation mathematical model through the current I flowing out of the galvanic pile and the port voltage U, andthen obtaining an SOFC heating mathematical model by calculating the subtraction between the energy released in the chemical reaction process of the hydrogen supplied by the hydrogen storage tank andthe SOFC power generation amount; and S4, finally, when an energy hub optimization model is constructed, giving a cost calculation formula, meanwhile, establishing a unit model and constraint conditions, and the constraint conditions include power balance constraints, tie line constraints, water abandoning constraints and equipment model constraints. Meanwhile, the conversion efficiency between system energy sources is improved.

Description

technical field [0001] The invention provides an energy hub modeling method considering solid oxide fuel cells and power-to-gas. Background technique [0002] In recent years, my country has gradually focused its work in the energy field on building an economical and efficient modern energy system, focusing on increasing the consumption of clean energy and promoting the healthy and ecological development of the energy industry. The energy hub involves a variety of energy forms, and its core is to realize the economical and efficient use of energy. Due to the characteristics and development differences of different energy forms, energy supply systems are often independently planned, designed, and operated independently, lacking interaction with each other, and thus cannot guarantee efficient energy utilization and safe and reliable operation. The energy hub can effectively integrate various energy forms such as electricity, water, gas, and heat, while meeting energy supply n...

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Problems solved by technology

[0003] At present, the research on the structure of the energy hub model basically uses gas turbines to convert natural gas into electrical energy. The conversion efficiency is relatively low, and there is a lack of devices for converting electrical energy into natural gas, so it is impossible to truly realize the cycle between energy sources.

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