系統介紹System introduction

太陽能光伏并網發電系統只能應用在有市政電網的地區，由太陽能電池方陣所產生的電能必須立即送入到市政電網，否則整個發電系統將無法發電。此系統主要由太陽能電池方陣、并網發電用功率調節器、市政電網、用電負荷設備及它們之間的連接電纜等組成。

The solar photovoltaic grid-connected power generation system can only be applied to areas with municipal power grids, and electric energy generated by the solar cell square array must be sent to the municipal power grids immediately, otherwise, the whole power generation system cannot generate electricity. The system is mainly composed of solar cell square array, power regulator for grid-connected power generation, municipal power grid, electric load equipment, connecting cables between them.

系統原理System principle

有市電的情況下，在晴朗的白天，由太陽能電池方陣產生的電能經過并網發電用功率調節器控制和電能變換后，首先輸出給太陽能系統與市電電網并網點附近的用電負荷設備，如果當時太陽能電池方陣的最大發電功率大于用電負荷設備消耗功率，則將剩余電量送到上一級配電網，然后通過電網給電網上的其它用電負荷設備供電。當并網點附近的用電負荷設備消耗的功率大于當時的太陽能電池方陣最大發電功率，則用電負荷設備所消耗的功率由太陽能光伏發電和市電同時提供，但是優先使用太陽能光伏所產生的電能。

Under the condition of commercial power, in the sunny day, the electric energy generated by the solar cell square array is firstly output to the electric load equipment near the grid connection point of the solar system and the commercial power grid after being controlled by the power regulator for grid-connected power generation and converted into electric energy, and if the maximum power generated by the solar cell array is greater than the power consumed by the electric load equipment at the time, the residual electricity is sent to the upper power distribution network, and then supply power to other electric load equipment on the power grid through the power grid. When the power consumed by the electric load equipment near the grid connection point is greater than the maximum power generated by the solar cell array at the time, the power consumed by the electric load equipment is provided by both the solar photovoltaic power generation and the commercial power simultaneously, but the priority is to use the energy generated by solar photovoltaic.

在無市電時，晴朗的白天太陽光伏發電產生的電能不能通過功率調節器提供給用電負荷設備。因為此時用電負荷設備和無電的市電電網是連接在一起的，此時電網上的負荷功率將是一個無限大的用電負荷設備，而太陽能電池方陣的發電量是有限的，同時為檢修電網的安全角度考慮，因此，并網用功率調節器將關閉與市電電網連接的通道，并停止發電（即專業術語為：孤島效應）。

In the absence of commercial power, electrical energy generate by solar photovoltaic power generation in sunny daytime cannot be supplied to the electrical load equipment through the power regulator. Because the electric load equipment and the commercial power grid without electricity are connected together at the moment, the load power on the power grid is infinite electric load equipment, while the power generation amount of the solar cell array is limited. At the same time, it is considered for the safety of the power grid. Therefore the grid-connected power regulator will close the channel connected to the mains grid and stop generating electricity (i. e., the terminology is: the islanding effect).

系統特點System features

• 綠色環保：發電過程中不產生有害氣體和粉塵污染；

• Green and environment-friendly: harmful gas and dust pollution are not generated in the process of power generation;

• 便于維護：系統全自動運行；

• Easy to main: the system operates automatically;

• 便于安裝：系統為單元式結構，安裝簡單；

• Easy to install: the system is a unit structure and easy to install;

• 效率高：降低儲能和傳輸損耗；

• High efficiency: reduce energy storage and transmission loss;

• 適應性強：可適應于各種氣候環境。

• Strong adaptability: It can be adapted to various climatic environments.

應用場所Application place

• 城市建筑的屋頂；

• The roofs of urban buildings;

• 別墅屋頂；

• Villa roofs;

• 學校、辦公樓；

• Schools, office buildings;

• 工業園區；

• Industrial park;