The internal structure layout of the photovoltaic grid-connected cabinet affects its operating efficiency first in the rationality of the arrangement of the components. When core components such as circuit breakers, inverters, and contactors are arranged in sequence according to the natural path of power transmission, the current flow path in the cabinet will be shorter and more direct, reducing the power loss caused by the tortuous path. This smooth layout is like a smooth road, allowing electricity to be efficiently transmitted from the input end to the output end, avoiding unnecessary energy consumption, and laying a good foundation for the overall operating efficiency.
The direction and arrangement of the lines are also key factors affecting efficiency. If the internal lines are messy and cross-sectional, it will not only take up too much space, but also may generate additional impedance due to mutual interference between the lines, hindering the smooth transmission of electricity. A reasonable layout will allow the lines to extend in an orderly manner along a fixed channel, shorten the line length as much as possible, and avoid excessive proximity of different functional lines to reduce the impact of electromagnetic interference. In this way, the power will be less obstructed during transmission and can be converted and transmitted with higher efficiency.
The layout of the heat dissipation components has a direct impact on the operating efficiency. Photovoltaic grid-connected cabinet will generate a certain amount of heat when working. If the cooling fan, heat sink and other components are blocked by other equipment, or the installation position is far away from the core area of heat generation, the heat dissipation effect will be greatly reduced. When the temperature in the cabinet rises, the performance of electronic components will be affected, and even the efficiency will decrease. By arranging the heat dissipation components near the components with high heat generation and ensuring that the heat dissipation channels are unobstructed, the heat can be discharged in time, so that each component can always work at a suitable temperature and maintain stable operating efficiency.
The spacing design between the components should not be ignored. If the components are arranged too closely, the space in the cabinet will be crowded, which is not only not conducive to heat dissipation, but also may affect the maintenance efficiency due to the small operating space during maintenance, indirectly leading to extended equipment downtime. Reasonable spacing can provide sufficient working space for each component, allowing air to circulate freely, while facilitating daily inspection and maintenance by operators, ensuring that the equipment is always in good condition and reducing efficiency losses caused by improper maintenance.
The division of functional areas is also helpful to improve operating efficiency. Arranging components with different functions such as control area, power area, and protection area together to form clear functional partitions can make power more organized during conversion and transmission, and reduce the loss caused by cross-regional transmission. At the same time, this partition layout facilitates independent management and monitoring of different functional modules. When a problem occurs in a certain area, it can be quickly located and handled to avoid the expansion of the fault and affect the overall efficiency.
The rationality of the layout of the grounding device also affects the operating efficiency. A good grounding layout can effectively guide the leakage current and interference signals in the cabinet, protect the safety of the equipment, and reduce the power loss caused by poor grounding. If the grounding device is improperly located or loosely connected, some power may be lost through unexpected paths during transmission, reducing the overall efficiency. A scientific grounding layout can ensure the stable flow of current and make full use of power.
In addition, the layout of interfaces and connecting components will also affect efficiency. If the input and output interfaces are arranged in a convenient location and at a moderate distance from the corresponding components, it can reduce the difficulty of connecting the external and internal lines and avoid the problem of excessive contact resistance caused by improper connection. A connection with good contact can make power transmission smoother, reduce energy loss caused by poor contact, and ensure that the photovoltaic grid-connected cabinet can efficiently transmit solar power to the grid.
