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Method for improving energy utilization rate of multi-energy system with hydrogen storage device

A hydrogen storage device and multi-energy technology, which is applied in the power system and multi-energy field, can solve the problems of waste of renewable energy, low energy utilization efficiency, and high price of electricity storage.

Active Publication Date: 2020-04-17
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

In the operation of traditional multi-energy systems, most of the energy storage systems are mostly electricity storage. The disadvantage is that electricity storage is expensive, which leads to serious abandonment of wind and light. Great waste of renewable energy and low efficiency of energy utilization

Method used

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  • Method for improving energy utilization rate of multi-energy system with hydrogen storage device
  • Method for improving energy utilization rate of multi-energy system with hydrogen storage device
  • Method for improving energy utilization rate of multi-energy system with hydrogen storage device

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Embodiment Construction

[0071] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0072] Taking the multi-energy energy supply system in a certain area as an example, the installed capacity of wind turbines is 40MW, the installed capacity of photovoltaics is 30MW, the installed capacity of power-to-hydrogen is 10MW, and the installed capacity of hydrogen storage is 20MW; the installed capacity of electric boilers is 15MW, and the installed capacity of hydrogen boilers is 5MW; The installed capacity of hydrogen fuel cell is 10MW; η e 92%; η P2G 79%; η hot,c 92.7%; η hot，H2 97.8%; λ w is 50%; λ p is 37.5%; λ r 12.5%; λ P2G is 33.3%; λ h 50%; 50%; C om It is 2536 yuan / day; γ j,c 2.34%; 5.48%; j,h 1.15%; j,sh 8.49%; the rated power of a fan ...

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Abstract

The invention discloses a method for improving the energy utilization rate of a multi-energy system with a hydrogen storage device, and belongs to the technical field of electric power systems and multiple energies. The method comprises the following steps: firstly, modeling wind power generation, photovoltaic power generation, fuel cell power generation, electricity-to-hydrogen conversion, energystorage and heat sources in the multi-energy system; then establishing an energy power balance model of the multi-energy system through an energy coupling relationship among multiple energy sources,and establishing an energy utilization power optimization model of the multi-energy system according to stable operation constraints of the hydrogen storage device; and finally, solving the energy utilization power optimization model of the multi-energy system by adopting a multi-objective differential evolution algorithm, obtaining the energy utilization amount of the multi-energy system in one year according to the typical daily multi-energy utilization amount, and obtaining the energy utilization amount improvement ratio of the hydrogen storage device in the multi-energy system. The improvement efficiency of energy utilization in the operation of the multi-energy system is judged by means of the hydrogen storage device, and the key of the hydrogen storage device to the improvement of the energy utilization rate of the multi-energy system is highlighted.

Description

technical field [0001] The invention relates to the technical field of power systems and multi-energy sources, in particular to a method for improving energy utilization in a multi-energy system containing a hydrogen storage device. Background technique [0002] Hydrogen storage is an important part and key supporting technology of the renewable energy development and utilization system and the improvement of energy utilization in the operation of multi-energy systems. Among the current energy storage technologies, hydrogen energy is the most suitable for green development, more suitable for utilization and popularization, and breakthroughs in the technical field. The existing main hydrogen production technologies mainly include hydrogen production from natural hydrogen, hydrogen production from biomass and hydrogen production from water, etc. In the operation of traditional multi-energy systems, most of the energy storage systems are mostly electricity storage. The disadva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/28H02J3/38G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06H02J3/00H02J3/28Y02E10/56Y02E10/76Y02E40/70Y02E60/36Y02E70/30Y04S10/50
Inventor 滕云张俊久孙鹏左浩刘硕郑晨田龙飚袁元缘孙月莹
Owner SHENYANG POLYTECHNIC UNIV
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