论文信息 - Availability of decentralized inverter concept of PV power system in Ubon Ratchathani, Thailand

Availability of decentralized inverter concept of PV power system in Ubon Ratchathani, Thailand

This article presents the availability of decentralized inverter concept of PV power system located at Tambon Sakkapoloom, Muangsamsib District, UbonRatchathani province of Thailand. The 1MW PV system consists of 255numbers of 4kW decentralized inverters. The data used in calculation process was collected from 1st February 2013 to 31st January 2014. The results of this research found that the average availability of the decentralized inverter concept in PV power system was 99.98% while in centralized inverter concept it was 97.47%. However, the evaluation period of only 1 year when compared with the life time of these PV power plants. The different failure characteristic of these PV power plants that always happen in every month for decentralized system and rarely happen in a year for centralized system were also dominated availability of these PV power plants. So, it is possible that availability of these PV power plants may not be different or availability of centralized system becomes better than decentralized system, depending on the evaluation period. This result can be used for feasibility study of centralized and decentralized PV power plants for Thailand in the future.

Prapita Thanarak | Panu Tanomvorasin

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