Fuel cell and lithium battery hybrid control method and system for offshore platform

Abstract

The invention provides a fuel cell and lithium battery hybrid control method and system for an offshore platform. The fuel cell and lithium battery hybrid control method comprises the following steps of: acquiring temperature data, pressure data, voltage data, current data and real-time discharge data, collecting the data into an online monitoring database, and uploading the data according to a preset time interval; acquiring the online monitoring database to carry out offset value operation, acquiring an overall index unhealthy degree by using a first preset threshold value and a second preset threshold value, and adding a GPS time synchronization signal; according to the overall index unhealthy degree, generating a fuel cell pulse coding signal in combination with a positive time sequence curve, and controlling fuel cell output; and according to the overall index unhealthy degree, generating a storage battery pulse coding signal in combination with an inverse time sequence curve, and controlling the output of the storage battery. According to the fuel cell and lithium battery hybrid control method, hybrid control of a fuel cell and a lithium battery is performed through using sensing data, the electric energy quality of the offshore platform is improved, and the risk of platform shutdown caused by control of the fuel cell and the lithium battery is reduced.

Description

technical field [0001] The present invention relates to the technical field of energy storage power supply, and more specifically, to a hybrid control method and system of a fuel cell and a lithium battery for an offshore platform. Background technique [0002] With the development of modern industry and the sharp increase in energy demand, mineral resources such as oil and natural gas are facing serious problems such as supply, carrying capacity and energy security. At the same time, a large amount of energy consumption has also brought a series of environmental problems. Therefore, it is very necessary to vigorously research and develop new energy sources with high efficiency and less environmental pollution, and to increase the utilization rate of natural gas as much as possible. Among them, the fuel cell has attracted widespread attention due to its advantages of high efficiency, no pollution, short construction period, easy maintenance and low cost, and has become a res...

AI Technical Summary

Problems solved by technology

[0004] However, the existing offshore platform fuel cell control scheme has the following defects: the existing offshore platform fuel cell control method aims to obtain more economical and efficient power supply, while ignoring the power quality problem

When relying on fuel cells for power supply, it is often necessary to switch between lithium batteries and fuel cells. If a reasonable switch cannot be made according to the demand, the power supply reliability of the offshore platform will be affected, and the offshore platform may be shut down in extreme cases. ACCIDENT

Moreover, after the outage of the offshore platform, due to the poor accessibility and difficult maintenance at sea, very serious long-term outage accidents often occur

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