Selectare Of Rețea Conectat Alimentare Generare Sistem

After the implementation of the grid connected power generation system project, it begins to enter the design and implementation phase. The design of the grid connected power generation system puts forward higher requirements for cost control. Currently, there are two methods for the cost and efficiency of the grid connected power generation system. One is an efficient modular production line that uses high-power components to reduce support and labor costs; Another option is to overwire modules, increase the ratio between modules and inverters, maximize inverter output, and reduce the cost of inverters, AC cables, distribution cabinets, and step-up transformers. Both options have their own advantages, but they are not certain and need to be considered comprehensively, carefully calculated, and found an economic balance point. Grid connected photovoltaic power generation, if the same power component and other conditions are the same, the power generation is similar, But if the same number of modules are installed in the same area, using inefficient 250W or efficient 3W, the upfront costs of brackets, foundations, cables, labor, etc. in the system are the same. Therefore, the average unit investment of effective modules will be lower than the average individual investment of ineffective components. In addition to initial costs, efficient components can also reduce land costs.

Cu the improvement of battery efficiency, the requirements for material quality, performance, equipment accuracy, and technology for grid connected fotovoltaic power generation are greatly grow, which will inevitabil growth manufacturing costs. Prin urmare, the cost of high-efficiency module is higher than that of traditional module. In order to clarify the impact of high-efficiency module technology on the cost of electricity per kilowatt hour, the sensitivity of power gain and module cost changes to kilowatt hour cost was measured.

Principii de Rețea Conectat Alimentare Generare Sistem

Dacă lumină este iradiat on a solar celulă% 2c it este absorbit la interfață strat% 2c și fotoni cu suficient energie poate excita electroni din covalent legături în tip P siliciu și tip N siliciu. Înainte recombinare% 2c electroni și găuri aproape interfața va fi separată de câmpul electric al spațiului încărcare% 2c și electroni va se mișcă la pozitiv încărcat N regiune% 2c în timp ce găuri vor se mișcă la negativ încărcat P regiune.

Through the charge separation of the interface layer, an outward measurable voltage is generated between the P and N regions. At this time, electrodes can be added on both sides of the silicon wafer and connected to a voltmeter. For crystalline silicon solar cells, the typical open circuit voltage is 0.5-0.6V. The more electron hole pairs are generated by light in the interface layer, the greater the current, and the more light energy is absorbed by the interface layer, resulting in a larger area of the interface layer, i.e. the battery, The greater the current generated in solar cells.

Există sunt două moduri pentru rețea conectat putere generare sisteme% 2c unu este fototermic conversie și celălalt este direct fotoelectric conversie.