A power coordination control method for solar-hydrogen hybrid power generation system

Abstract

The invention provides a light-hydrogen hybrid power generation system power coordinated control method, which comprises the following steps: establishment of a photovoltaic power generation unit mathematic model, establishment of a proton exchange membrane fuel cell unit mathematic model, establishment of an alkali-type electrolytic cell unit mathematic model, establishment of a supercapacitor unit mathematic model, establishment of a hydrogen storage tank unit mathematic model, and power coordinated control of a light-hydrogen hybrid power generation system. By carrying out analysis on power coordinated control of the light-hydrogen hybrid power generation system through the method, effectiveness of the power coordinated control of the light-hydrogen hybrid power generation system is proved fully; compared with a conventional power coordinated control method, the power coordinated control method in the invention, on the basis of analysis of the features of the solar photovoltaic power generation unit mathematic model and hydrogen storage tank unit mathematic model, and with a slow dynamic response characteristic of a hydrogen energy storage device being taken into consideration, adopts a supercapacitor, the transient performance of which is good, to compensate unbalance power in time, thereby improving new energy absorption capacity of a power grid; and the method has the advantages of being scientific and reasonable, and high in practical application values and the like.

Description

technical field [0001] The invention is a power coordination control method of a solar-hydrogen hybrid power generation system, which is applied to modeling and simulation of combined solar-storage power generation, analysis of grid-connected operation characteristics, and smoothing of unbalanced power in the process of dynamic response of hydrogen energy storage devices. Background technique [0002] In recent years, with the massive burning of fossil fuels, greenhouse gas emissions have also increased, and environmentally friendly renewable energy has become the most reliable and potential way to solve this problem. Among the existing renewable energy power generation systems, photovoltaic power generation is one of the most promising new energy power generation methods. In order to maximize the use of renewable resources, maximum power point tracking control of solar cells is required. However, the output power of photovoltaic power generation is affected by factors such...

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Problems solved by technology

However, the output power of photovoltaic power generation is affected by factors such as light intensity and ambient temperature, making its output highly volatile and random, which brings unfavorable factors to the safe and stable operation of the power grid.

[0003] On the one hand, the traditional power coordination control method of solar-hydrogen hybrid power generation system realizes the maximum energy utilization of solar-hydrogen energy storage system, but does not consider the actual dynamic response characteristics of the battery model; mode of operation, but did not incorporate hydrogen storage tank constraints into the system analysis

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