Operation and maintenance of PV power plants
2Pages

Your contact worldwide: pv-protect@dehn.de 400 Germany Spain Italy China India Mexico South Africa e: NASA, Global Hydrology Resource Center, http:Mhunder.msfc.ne PV systems have established themselves around the world as an efficient source of energy. In Germany, PV systems with a capacity of abput 180 GW are installed and will be further expanded. These PV systems assume a substantial role in the energy supply. Therefore, the demand for plant reliability and availability increases. However, malfunctions in multi-megawatt PV power plants cause fluctuations in the grid and valuable balancing energy must be used. Causes of damage PV systems are frequently damaged by thunderstorms and lightning strikes due to their wide distribution. Therefore, they should be an integral part of financial risk assessments. Experiences with Northern European power plants cannot be transferred to regions with a higher irradiation and air humidity since the probability of a lightning strike is much higher in such regions. Power plants with an output of several hundred megawatts are widely distributed which makes them vulnerable to lightning strikes. The electronic systems and field cables may thus be damaged if no earthing, lightning protection and surge protection measures are provided. Consequences The aim of maintenance contracts is to ensure that power plants deliver high yields over decades. Malfunctions resulting from plant parts which are destroyed by lightning strikes entail replacement and repair costs. As a consequence, the yield during downtime and thus the performance ratio of the entire solar park is reduced. Repeated malfunctions involve insurance problems and general maintenance measures (retrofit) may have to be taken. Ground flash density in selected countries

Operation and maintenance of PV power plants Lightning and surge protection solutions DEHN globally protects PV systems in the kilowatt to megawatt range against malfunctions and downtime caused by lightning currents and surges. More than 20 years of experience in the protection of PV systems Our solutions: Earth-termination system, lightning and surge protection and safety equipment Our experienced experts will be pleased to help you with power plant outages or component damage caused by thunderstorms: Our portfolio ranges from technical consulting to the development of protection...