In the case of the same installed capacity, why is the power generation different?

In the case of the same installed capacity, why is the power generation different? This has something to do with the power generation efficiency of the power station. How to improve the efficiency of photovoltaic power generation, increase the output of photovoltaic power, and increase the income of the power station, this article has the following tips.

  1. Choose the best installation angle and orientation

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The geographical location of the PV plant is one of the most important factors. In the initial stage of the establishment of the power station, it is necessary to inspect the local weather conditions and sunshine conditions, and formulate a suitable construction plan according to local conditions, laying a good foundation for the subsequent years of power generation.

Choose the best inclination angle: Considering the seasonal changes, you can choose an appropriate installation angle so that the photovoltaic panels can receive sunlight radiation to the greatest extent throughout the year. 

Choose the best orientation: The orientation of the photovoltaic panel refers to the angle of its plane relative to the south direction. In the southern hemisphere, choose to face due north.

Reduce shadow blocking: ensure that the photovoltaic panels are not blocked by shadows such as buildings and trees, so as not to affect power generation efficiency. Avoid areas where light shadows may occur.

Create good ventilation conditions: When installing photovoltaic modules, leave enough space and brackets so that air can flow through the bottom and sides of the modules. The height and spacing of the brackets should be reasonably designed according to the local climate conditions and the type of photovoltaic modules. Moreover, it is necessary to clean the components regularly to ensure that they are kept in normal working condition.

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2.Choose an Efficient and Reliable Inverter

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In addition to selecting an inverter that matches the power of the components according to the actual situation, choosing a reliable and high-quality inverter can also help improve the stability and life of the power station system. Inverters with reliable functions and real-time monitoring capabilities to check the performance of the system at any time and quickly find faults. The output power of the photovoltaic module is related to the working voltage of the MPPT controller. Only when it works at the most suitable voltage can its output power have a unique maximum value. So when choosing an inverter make sure it has efficient MPPT technology.

MPPT efficiency is a key factor in determining the power generation of a photovoltaic inverter, and its importance far exceeds the efficiency of the photovoltaic inverter itself. It is necessary to first measure the power change of the component and then respond to the change. The key component is the current sensor, its accuracy and linearity error will directly determine the hardware efficiency, and the sampling accuracy of the software is also determined by the accuracy of the hardware.

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4.Reduce line loss

In a photovoltaic system, cables are indispensable. Although they only account for a small part, the impact of cables on power generation cannot be ignored. In the selection and laying of cables in the system, it is necessary to fully consider: the insulation performance of the cable, the heat-resistant and flame-resistant performance of the cable, the moisture-proof and light-proof performance of the cable, the type of cable core, and the size and specification of the cable. In daily operation and maintenance, we have to check whether the lines are damaged, whether there is leakage, etc., especially after each typhoon and hail, it is essential to check whether the lines and connectors are loose.

Regularly check the cables to avoid problems such as fatigue and aging of cables or terminals, which may cause excessive local heat, which may cause fires and cause power outages in power stations.