Hydro-generator excitation power supply system based on hydrogen fuel cell

Abstract

The invention discloses a hydro-generator excitation power supply system based on a hydrogen fuel cell. A hydropower station hydrogen production system (1) is connected with a hydropower station hydrogen storage system (2) through a hydrogen conveying pipeline (3), and the hydropower station hydrogen storage system (2) is connected with a hydrogen fuel cell stack (4) through the hydrogen conveyingpipeline (3); the hydrogen fuel cell stack (4) is connected with a bus on the direct-current excitation power switch cabinet (9) through a cable, and the output end of the hydrogen fuel cell stack (4) is connected with the hydrogen-electricity combined control cabinet (8) through a pipeline. The system overcomes the defects of serious environmental pollution and even personal safety hazard causedby leakage in the prior art, and has the advantages that regular charging and discharging are not needed, a memory effect is avoided, and the performance of the whole battery cannot be reduced year by year.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower, and more specifically relates to a hydrogen fuel cell-based hydraulic generator excitation power supply system. Background technique [0002] Excitation of the existing hydropower station excitation system is an important process for generator voltage establishment, and there are generally three sources of excitation power. [0003] The first is residual voltage excitation, which is limited by the generator itself and may not be able to meet the excitation requirements under various working conditions. [0004] The second is that the AC system provides excitation power, and the AC system may encounter a power outage in the entire site, and also requires more complex rectification equipment to rectify the AC to DC, so the AC system cannot fully guarantee the stable supply of power. [0005] The third is that the DC system provides the starting power supply, so the DC powe...

AI Technical Summary

Problems solved by technology

[0003] The first is residual voltage excitation, which is limited by the generator itself and may not be able to meet the excitation requirements under various working conditions

[0004] The second is that the AC system provides excitation power, and the AC system may encounter a power outage in the entire site, and also requires more complex rectification equipment to rectify the AC to DC, so the AC system cannot fully guarantee the stable supply of power.

[0006] However, at present, most of the batteries in the traditional DC system of hydropower stations use lead-acid or cadmium-nickel batteries. Both lead-acid and cadmium-nickel batteries are corrosive and toxic to a certain extent. Serious environmental pollution, even endangering personal safety, so it is necessary to take relevant protective measures

[0007] In addition, the life of the battery is limited. As the running time increases, the performance of the battery will gradually decline. When the life of the battery expires, it needs to be replaced with a new battery to ensure the continuous and reliable power supply of the system DC

Images