How can the domestic photovoltaic is higher than other countries?

Everyone knows the inspection a hard targets, household photovoltaic power station is power generation. Considered in the process of purchasing zui is more components, inverter efficiency, brand, but some of the details in the process of power plant construction and maintenance but little attention, '

it is well known that assess the difficulties of household photovoltaic power station aims to electricity. In the process of purchasing, zui focuses on components, inverter efficiency and brand name, but paid little attention to the details in the process of power plant construction and maintenance. As a result, the power plant capacity may be lower than expected, stents may be early ageing, cable may be burned, etc. As a result, the service life of the plant could seriously far below expectations. 1. Household photovoltaic power station design components to avoid blocking shade plants: plants should be considered whether the shade and branches in the arrangement of shade. Corner guard: corner guards also at the scene, but not much. Usually, protect horn will be directly removed. Differences in terrain shadow: the topography there differences should be considered component of north and south and component is caused by the shadow; The same line square shade caused by different submatrix height; At the same time, the shadow between the floor should also be considered. Mud, bird droppings, dust, etc. Shelter: dirt, bird droppings, dust, etc. At home, after the completion of the photovoltaic power station will cause shade to parts, need regular inspection and cleaning. Problem: jam for a long time can cause hot spots to appear on the parts. Prevention and Suggestions to improve the block: in the design, considering the terrain difference and component array spacing between before and after. Regular inspection group a array; Clean and remove various fixed cover surface and peripheral components. 2. Cable strapping in standard way, to avoid the hidden trouble. Problem: cable standard tied seemingly minor details is, in fact, most the place that should not be ignored. Inverter, components, and female head not bundled cable is easy to fall off by strong winds, and lead to poor contact plug, lighter, and burned. Prevention and improvement Suggestions: after debugging the substring components, cable tied tightly connect between components; Pay attention to the construction quality, perfect the connection plug in the actual installation. Junction box of the cable should be introduced through a pipeline, and single marker in the box. 3. Avoid brutal installation problem: in the process of stent installing, frequently affect the bracket installation open the problem of insufficient accuracy, cause component mounting holes and bracket mounting hole deviation, can't install screws. Construction personnel creativity, forced move to install component framework and some stepping stone. 。 。 These savage operating more or less affect the actual service life of the components. Prevention and improvement Suggestions: strict requirements for stent installing accuracy; Support beam assembly mounting holes in the leaves elliptic hole long; Loosen all the bolts on the scaffold, and carries on the overall adjustment, so that the assembly and tidy. 4. Avoid weathering and stents corrosion problem: because of many plant located in saline environment, poor quality of winter construction foundation, lead to premature concrete foundation of weathering. At the same time, the poor quality of stents in the production of galvanized, bubble or zinc lump, affecting the installation or easy to corrosion. Prevention and improvement Suggestions: assembly use hot dip galvanized screws, double level and installed at a time. Scaffold choose well-known brand, pay attention to quality control, special attention to the quality of the hot galvanizing bracket; Should be paid attention to in the process of construction, the quality of the concrete foundation, in a saline environment can be in based waterproof coating asphalt.