Techno Economic Analysis of On Grid PV system in AN Najah University hospital
Dania Al Abed
Hiba Abu Issa
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There has, in recent years, been a huge movement worldwide, to using a renewable energy for both residential and commercial use. Since the solar energy is the most important renewable energy sources, the efforts of many countries go to various images and monitor them the necessary funds to develop the fields and research for the exploitation of solar energy as one of the most important alternative energy sources for oil and gas. This source is the hope of developing countries in the development so the most promising technologies are investing solar energy and converts it into electrical energy., A strategic energy as the source of energy future will have the greatest impact in the conservation of traditional energy sources. This is why we choose our graduation project. We need to pay attention to what our country is blessed Palestine from renewable energy sources. And now Authority strategy in Palestine suggests that by 2020 10% of the total our consumption will be from renewable source (130MW from solar cell) so we need to focus research and studies in this area. Photovoltaic offer consumers the ability to generate electricity in a clean, quiet and reliable way. Photovoltaic systems are comprised of photovoltaic cells, devices that convert light energy directly into electricity. Because the source of light is usually the sun, they are often called solar cells. The word photovoltaic comes from photo, meaning light, and voltaic, which refers to producing electricity. Therefore, the photovoltaic process is producing electricity directly from sunlight. Photovoltaic are often referred to as PV, PV systems are often cost justified even when grid electricity is not very far away. When applications require larger amounts of electricity and are located away from existing power lines. photovoltaic systems can in many cases offer the least expensive. AN Najah University Hospital intends install solar cells and connect them with the grid lines of the electricity Company of North , according to financial possibilities that available for a hospital ,they decided to install a 100 kwp PV system . We show in the research the following calculation Number of module and the number of inverters that are needed for 100 kwp PV system.The suitable fuse that we can used to protect module circuit (Dc side). The suitable cables that are needed to connect between module circuit and a junction box , At the same way we choose a suitable cables are needed for connection between junction box and inverter.In order to protect an AC side we choose a circuit breakers that are needed for our PV system.And after of all we calculated a space area that are needed to install 100 kwp PV system.we design A calculator that help us to size any on grid system . and the result was as a following we show that Integration of PV systems with distribution networks could bring a number of benefits as well as technical issues. The benefits could be the reduction in maximum demand charge and energy losses. However, it creates voltage rise issues. Numerous studies have been carried out to investigate the impacts of PV penetration on maximum demand charges, energy losses and voltage rise issues.However, after we analyze the quality of supply thats come from NEDCO company we take a LV network of An Najah University Hospital , then we take another residential network to show the impact of PV system on networks. we calculate the cost of one kwh that come from many sources including PV generator, electrical company and Diesel generator .Then we calculate the economic impact of installing PV system in order to see if the PV generator is a feasible or not a feasible by using simple payback period method also Net present value method. The cost of electricity (Nis/kWh) generated by different sources is a calculation of the cost of generating electricity at the point of connection to a load or electricity grid. It includes the initial capital, discount rate, as well as the costs of continuous operation, fuel, and maintenance. This type of calculation assists policy makers, researchers and others to guide discussions and decision making. we calculate the saving in natural gas and the emission of greenhouse gases that can be avoided if we install a PV system both for achieve our electricity requirement in all Palestine and then we take about our suggestion project to see the impact of PV system in environmental side ..