Energy management device for solar assisted ocean thermal gradient power generation system

Abstract

The invention relates to the technical field of energy usage and control, in particular to an energy management device for a solar assisted ocean thermal gradient power generation system. The energy management device is characterized by comprising an irradiance sensor, a temperature sensor, a flow sensor, an analog quantity unit, a PLC control system, a human-computer interface and an upper computer, wherein the analog quantity unit collects signals such as radiation intensity, heat storage water temperature, working medium temperature at an evaporator outlet, etc. and outputs the signals; andthe PLC control system is combined with the collected signals and uses a fuzzy PID control algorithm to output a control signal to adjust the speed of a warm seawater pump, a heat storage water pump,a cold seawater pump and a working medium pump and the opening of a bypass valve of a three-way valve, and control the flow of warm seawater, the flow of conduction oil, the flow of heat storage water, the flow of cold seawater and the flow of a working medium under corresponding working conditions of the solar assisted ocean thermal gradient power generation system, the working state of the power generation system is automatically adjusted, and thus all-weather efficient power generation is realized. The energy management device can adjust an equipment state according to load needs and the change of an external environment, so as to maintain the stable power generation efficiency and facilitate management personnel to control and monitor.

Description

technical field [0001] The invention relates to the technical field of energy utilization control, in particular to an energy management device used in a solar-assisted ocean temperature difference power generation system. Background technique [0002] Ocean temperature difference energy is a low-grade energy, and the main reason why there is no large-scale commercial application at present is the low thermal efficiency of the cycle. The most effective way to improve the cycle thermal efficiency of the OTEC system is to increase the temperature difference between cold and warm seawater. However, due to technical limitations, it is difficult to further deepen the extraction depth of cold seawater. How to efficiently use ocean temperature difference energy to promote the economic development of the South my country Sea region and solve the urgent demand for energy and power for national defense construction has become a problem that must be faced. Considering that areas with ...

AI Technical Summary

Problems solved by technology

[0002] Ocean temperature difference energy is a low-grade energy, and the main reason why there is no large-scale commercial application at present is the low thermal efficiency of the cycle

The most effective way to improve the cycle thermal efficiency of the OTEC system is to increase the temperature difference between cold and warm seawater, but due to technical limitations, it is difficult to further deepen the extraction depth of cold seawater

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