Performance Analysis and Power Management for the Residential Photovoltaic System

• Main Authors: Fuyuan Liu, 劉富元
• Other Authors: Herchang Ay
• Format: Others
• Language: zh-TW
• Published: 101
• Online Access: http://ndltd.ncl.edu.tw/handle/02778296960886827121

碩士 === 國立高雄應用科技大學 === 應用工程科學研究所 === 100 === Abstract So far, the crude oil price has been incessantly on the increase, hitting an all-time high. Such surging oil price is expected to pose a threat to the economic recovery. Both the prices of petroleum and electricity are hiking up, which heavily burdens the people. Provided that the global economy cannot get better off, we have to bear the worsening inflation. Every time when the energy price fluctuates, it usually goes with a wave of promoting green energy industries. Therefore, the new energy development in the world is now being intensively oriented toward reaching a common perspective of low pollution and carbon reduction. Presently, in order to refrain from an instant electric overload in summertime and to reduce electric quantity during the load peak in summer, Taiwan Power Company enacts several regulations, like fining those who overusing electricity and offering a preference to those who save energy. Since the solar panels are capable of continually generating energy under a clear and fair sky, solar power can be used to alleviate overuse of electricity from Taiwan Power Company in summertime. This research paper is aiming at the photovoltaic (PV) system in the renewable building of National Kaohsiung University of Applied Science as the primary subject to investigate and to analyze the electricity efficiency before and after the solar panels in the renewable building are shaded. The generator capacity after the solar panels are shaded in 2010 versus that before they are shaded in 2009 would cause a decrease of 340KWH, which is 43.6%. From this survey, the amount of rainfall and the operation of the equipment would influence the solar power generation. The most important are seasonal changes. In particular, the changes of the generator capacity in summer are more obvious than those in winter. As to the comparative analysis of the solar power generation applied to the lighting before and after the solar panels in the building are shaded, the solar power can be supplied to the indoor lighting on the third floor and the public lighting on the first and the second floor before they are shaded. There is 8.5H for average use before they are shaded; 6.4H after they are shaded. Judging from this, it is much better that the solar power generation is applied to the lighting, partially providing power. Before the solar power generating system of the renewable building is shaded, the cost of generating electricity for 1KWH is NT$11.96; after the deduction of 50% of the government subsidies, the payback period setting up its cost needs 49.8 years. The solar power generating system of the renewable building includes 50% of the government subsidies and 50% of the deductibles; the building cost for 1KWp is around NT$343,137. The average building cost for 1KW in 2008 is about NT$300,000. Despite its high price, the generator capacity of the solar power generating power system of the renewable building (8.16KWP) elaborately constructed by Solar Power Team versus that (10.26KWP) of National Science and Technology Museum consumes more 56.25KWH, which is 7.2%. From this, the solar power modules, the modular arrangement, the building orientation, and the laws of the sun can increase the maximum of the generator capacity yearly. At present, the building cost for 1KW in 2012 is NT$90,000 or so. With constant improvement in technology, the building cost is getting much lower than ever. What is more, presently electricity sold to Taiwan Power Company for 1KWH is about NT$9.5, which is able to shorten the payback period. With regard to the contribution of the solar power generating system of the renewable building to CO2 reduction, before the building is shaded, the result of 2009 is the greatest and most obvious, for it reaches 5956 KG/CO2 yearly. The least one is that of 2010 after they are shaded, coming to 3366KG/CO2 yearly. These indicate that solar power generation has great potential for CO2 reduction in a city. There is a must to have future energy effectively reacted not only upon technical, social, and environmental advances but also upon changes in electricity markets. Based on different reasons, such impacts electricity has brought forth as safety, sufficiency, quality, costs, and surroundings will be examined with novel concepts; also, systematic energy efficiency will be anticipated to capture more people’s close attention than ever. Key words: Radiation, Electricity Efficiency, Cost-effectiveness, Electrical Energy Management.