Nowadays, home photovoltaic is accepted as a high-yield, almost zero-risk investment method for the majority of residents. Many people want to build it, but they are very confused about how to build a home photovoltaic. The following small series will dissect the design and construction process of a family photovoltaic power station. . 1, determine the installation capacity Determine the installation position of the PV power plant. The power station can't be shaded by buildings or trees, and the capacity of the power station can be estimated based on the available area. The installed component capacity per square meter is about 100W. Taking a roof with a usable area of ​​50m as an example, a 5kW power station can be built. Determine whether to use single-phase or three-phase grid connection according to the grid type of the access home 2, select the grid mode Spontaneous use of self-use Internet: that is, photovoltaic electricity for their own use, can not sell to the grid. This model is suitable for households that use more electricity during the day. The higher the proportion of self-use, the shorter the cost recovery cycle. Earnings = electricity subsidy + sales revenue + save electricity The full amount of access to the Internet: that is, the electricity generated by photovoltaics is all sold to the power grid, and it is not used at one time. In this case, all the electricity generated by the power station is acquired at the on-grid price of the local photovoltaic power generation benchmark. Earnings = electricity subsidy + selling power The full Internet connection mode is suitable for families with low electricity consumption in the daytime. It is simple to connect to the Internet and enjoy the full amount of on-grid electricity prices. 3, choose reliable photovoltaic power plant system brand Choose the brand of reliable photovoltaic power plant system, components, inverters, distribution boxes, cables, brackets, etc., do not have to worry about the quality, and after-sale guarantee. 4, component arrangement Component Orientation: Ideal Mounting Azimuth is True South Component inclination: The optimum inclination of the system is approximated by the local latitude angle, or according to the roof structure, the components are laid parallel to the slope of the roof, and the inclination angle can be measured using an angle measuring instrument. 5, bracket construction 1) In addition to ensuring the optimal inclination and orientation of the components, the stand should be spaced as far as possible on the roof. 2) The material of the bracket is made of stainless steel or hot-dip galvanized steel for the purpose of anti-corrosion. 3) The bracket should ensure that the bottom of the module is not less than 15cm above the bottom surface to avoid water immersion and rain splash on the module surface. 6, inverter installation environment 1) Try to avoid installing in direct sunlight 2) Try to avoid installing in locations that are vulnerable to rain 3) The installation location requires good ventilation and heat dissipation 7, ground protection The importance of grounding: Electrical grounding prevents equipment short-circuiting, damage to components or inverters caused by electrical leakage or even burning, and protects the human body from electrical shock when it comes into contact with live metal parts. Electrical grounding systems include: component frame grounding, inverter grounding, and distribution cabinet grounding. Component Grounding: The aluminum alloy frame of the module is connected to the bracket and grounded via the down conductor. Inverter grounding: The PE terminal of the AC terminal block and the PE of the chassis enclosure are grounded. Distribution cabinet grounding: Use a ground wire to connect to a ground bar or to a nearby frame ground. 8, lightning protection grounding Photovoltaic power stations are installed on the top of a building and are vulnerable to lightning strikes. The surge currents caused by lightning strikes can damage inverters and Other system equipment. Therefore, the power station needs lightning protection grounding to guide the inrush current to the underground to protect the system. FUXIBIO Ffp2 Mask manufactured by Careable biotechnology Co.,Ltd Careable biotechnology, Ffp2 Approved Face Mask,Ffp2 Approved Mask Online,Ffp2 Approved Mask,Ffp2 Approved Face Mask Online CAREABLE BIOTECHNOLOGY CO,. LTD , https://www.careablemask.com