Electricity is not only generated, but also distributed

Recently, the National Energy Administration held a symposium on the mid-term evaluation results of the "13th Five-Year Plan" for solar energy development. The meeting emphasized that photovoltaics is still a clean energy that the country supports, and will receive more support in terms of subsidies and installed capacity targets. Since the "531" photovoltaic new policy in the first half of the year, the expectations for photovoltaic installations have been significantly reduced, the prospects of the photovoltaic industry have been cold, and the entire industry chain has been under great pressure. This meeting made it clear that photovoltaics will still be subsidized before 2022, opposed "one size fits all", and had subsidized projects and parity grid-connected projects running in parallel. The "13th Five-Year Plan" photovoltaic installation target of 210GW is too low and is expected to be raised to 250GW, or even 270GW. Once this blockbuster news came out, it effectively boosted the confidence of the photovoltaic industry, and the photovoltaic industry ushered in the new year.

A good policy will inevitably bring good opportunities. The photovoltaic industry is still a clean energy that the country supports. As we all know, photovoltaic power stations are a comprehensive system project. Reducing the cost per kilowatt-hour and promoting the industry to achieve parity as soon as possible has been the dream of photovoltaic people in recent years. The reduction in the cost per kilowatt-hour will not only bring about an explosive parity market, but also increase the income of investors.

Reducing the cost per kilowatt-hour is not only about increasing the power generation of the system, but also about increasing the system capacity ratio. Why is the cost of photovoltaic systems in India relatively cheap? On the one hand, it is due to the price of the equipment itself, and on the other hand, it is also due to the impact of the increase in capacity ratio on the cost of photovoltaic power station systems. The following explains the effect of reducing the cost per kilowatt-hour from two dimensions:

Improve the power generation of photovoltaic power station systems

At the photovoltaic power station site, it is inevitable that there will be parallel mismatch losses between strings due to the strings themselves (research has shown that even between standard strings, there is a 0.3% difference between strings when there is no external interference), voltage differences between strings caused by the wiring process, and shielding of front and rear strings outside the design (9:00-15:00), as well as shielding caused by dust cover, passing clouds, bird droppings, leaves, etc. This phenomenon is particularly significant due to the difference in background color and reflectivity on the back of bifacial modules.

TBEA's string inverter TS75KTL_BF increases the MPPT penetration rate of each string to 100%, ensuring that the power generation of the photovoltaic power station system is increased by at least 4% in complex terrain and bifacial component applications, and completely solves the parallel mismatch loss between strings; the independent MPPT design of each path makes the inverter have a natural anti-reverse connection function, ensuring the safe and stable operation of the system.

Effect of string-parallel mismatch

Improving the DC capacity ratio of photovoltaic power stations

TBEA's string inverter TS75KTL_BF increases the capacity ratio of components to inverters to 1.3 times or more, significantly reducing the cost per kilowatt-hour and increasing system revenue. The following is a study on the relationship between the cost per kilowatt-hour and the capacity ratio of photovoltaic power stations in a certain region of China. It is found that as TBEA increases the capacity ratio of string inverters to 1.3 times or more, the cost per kilowatt-hour of photovoltaic power stations can be reduced to a certain extent. Compared with a capacity ratio of 1, the cost per kilowatt-hour can be reduced by about 5.78% or more.

The electricity generation is not only about "generation", but also about "distribution". While the power generation of the photovoltaic power station system is increased, the cost of electricity can be reduced by increasing the capacity-distribution ratio. He is really an "economical man" who combines wisdom and economical applicability. You deserve him.