DESIGN OF DECENTRALIZED BUILDING-INTEGRATED PV SYSTEM WITH HYDROGEN STORAGE ANDANALYSIS OF THE IMPACT ON THE EUROPEAN UNIVERSITY OF MADRID LOW VOLTAGE ELECTRIALNETWORK

摘要

This paper presents the design of the decentralized building-integrated low voltage grid-connected PVsystem, which consists of two separate PV systems, the first PV system will be installed on the roofs of the universitybuildings and have a total power capacity of 645,12 kWp, the second PV system will be installed on the roofcovering the outdoor parking, with a total power capacity of the 603,12 kWp. The solar electricity generated bythese PV systems is injected into the low voltage distribution network of the European University. The excess ofelectric solar production in summer months or vacation weeks can be utilized for the hydrogen storage system, whichtransforms this electric energy into hydrogen. When it is necessary, the hydrogen storage system can convert thestored hydrogen to electrical energy and inject it into the low voltage distribution network. The aim of design is toreduce the demand of electricity supplied from conventional grid. In this sense, the injection of solar electricity fromseparated PV systems and from hydrogen storage system will permit an important annual saving of electrical energyfor the university. This paper also analyzes the impact of the above indicated electrical generation systems on theelectric system supply of the university.