Generation Performance Analysis of Solar Systems with Different Installation Orientation and Tilt Angles

• Main Authors: Yao-Fu Sun, 孫堯福
• Other Authors: Hung-Cheng Chen
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/54314264241507967043

碩士 === 國立勤益科技大學 === 電機工程系 === 101 === Pediment framework steel structure metal roofing house is a common building in Taiwan. Most of plants are built in this way currently. In the traditional custom, the best building is located north and faced south. Therefore the slope of roof is east-west oriented. We attempt to find the more efficient way of utilizing this kind of buildings for photovoltaic (PV) system. This article studies 7 PV systems installed on 5 steel structure metal roofing houses at the same site. The total capacity of PV systems is 230kWp. After 2 years long-term of system running, the generation performances of these 7 PV systems are analyzed. These results can provide useful information for similar system built-up in the future. With the higher elevation tilt of the PV modules, the amount of sunlight will be affected more by the azimuth angle; on the contrary, with lower azimuth angle, it will have less affection. According to the article, with the power generation performance of east-west elevation angle of 16ﾟ, the result shows that the affection in the central region is less than 10%. It deserves our attention and promotion if the iron roof follows the current recommendation with the drowning slope range of 2/12 to 4/12 (9.46ﾟ ~ 18.43ﾟ). The PV modules under long terms of outdoor power generation and the dirt surface cleaned by the natural and pure power. The elevation angle has less affection to the RA value, which can be known from the statistical result of DC power generation and the RA value; On the contrary, it has more direct reasons to the surrounding environment. Therefore, we do not encourage you to install the function of auto-cleaning in each system, as it will increase the cost of overall power generation. It is quite stable after the relating systems installed which belongs to our study. In this period, all the main components relating to the solar power system function normally, except to the signal transmission and the relating conversion equipments, which will breakdown easily under the high temperature. This result corresponds to the system design and the installation anticipation, and therefore the solar power generation system is highly stable power generation equipment.