Hydrogen/electricity interconnection system based on fuel cell reversible cycle and control method

Abstract

The invention discloses a hydrogen / electricity interconnection system based on fuel cell reversible cycle and a control method. Hydrogen generated by using a reversible high-temperature fuel cell is conveyed to the outside along a natural gas pipeline network in an injection form, so that the hydrogen storage cost is reduced effectively, the establishment of large-scale hydrogen conveying pipelines is also avoided, the hydrogen conveying cost and construction cost are reduced, bidirectional flowing of electricity and gas energy flows is promoted, a power grid and a gas grid are deeply coupled,and the efficiency of energy utilization is improved; moreover, the fuel cell is also an energy storage device while serving as a prime motor, new energy is consumed through high-efficiency combinedheat and power generation and electricity converted hydrogen, and energy conservation and emission reduction are realized; through alternation of power generation and hydrogen production of the reversible high-temperature fuel cell, flowing gas is also in opposite directions alternately, the possibility of carbon deposit is avoided, a mixed fuel can be directly used for power generation, additional expensive reformers are not needed, and through hydrogen injection, the reversible high-temperature fuel cell also directly adopts efficient electricity converted hydrogen but not low-efficiency electricity converted natural gas.

Description

technical field [0001] The invention relates to the interdisciplinary fields of electric / gas multi-energy systems and hydrogen energy management, in particular to a hydrogen / electricity interconnection system and a control method based on reversible cycles of fuel cells. Background technique [0002] At present, various forms of energy in our country are operating relatively independently and separated from each other. The coupling effect of various forms of energy in production, transmission, consumption, etc. is getting stronger and stronger, involving electricity, heat, gas and other energy The multi-energy system of flow is the trend of future energy forms. Therefore, it is necessary to establish a new energy system integrating source, storage and load. At present, the research on the coordinated operation of multi-energy systems in the world has taken into account the constraints of natural gas pipelines. However, for multi-energy systems including power-to-gas, most o...

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