Distributed power generation system and control method thereof

Abstract

The invention discloses a distributed power generation system and a control method thereof. The power generation system comprises a main control module, a methanol hydrogen production module, a protonexchange membrane fuel cell module, a system power supply module and a man-machine interaction module, the system further comprises an energy buffer module and a hydrogen safety module used for providing standby hydrogen. The methanol hydrogen production module, the proton exchange membrane fuel cell module, the system power supply module, the man-machine interaction module, the energy buffer module and the hydrogen safety module are all in control connection with the main control module; a load bus connected with a load is further included, and the load bus is in star connection with a direct-current conversion assembly of the proton exchange membrane fuel cell module and an electric energy management assembly of the energy buffer module; the load bus is provided with a voltage sensor and a current sensor, and is connected with the main control module. The system has the advantages of being reasonable in structural design and good in safety performance, and the method has the advantages of being small in power fluctuation, beneficial to improving power generation efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of distributed power generation, in particular to a distributed power generation system using proton exchange membrane fuel cells and methanol to produce hydrogen and a control method thereof. Background technique [0002] Modern power systems are very vulnerable to natural disasters such as earthquakes, floods, storms, ice and snow, and lightning. Any disturbance on the power grid will spread at the speed of light. In severe cases, it may cause large-scale power outages or even the collapse of the entire network. In the face of the catastrophic consequences that may be caused by such a large power grid outage, the power supply mode of "large power grid + distributed power generation" can be promoted to maintain the power supply of important users in the event of power grid collapse and unexpected disasters, and avoid catastrophic consequences. Greatly improve power supply reliability. Therefore, distribute...

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Problems solved by technology

However, the life of proton exchange membrane fuel cells is greatly affected by power fluctuations, and the power generation efficiency is low. At present, high-pressure gaseous pure hydrogen is an inflammable and explosive material, which is strictly controlled by national regulations.

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