Friday 7 November 2014

how to improve the quality of photovoltaic power plants

2014, the policy was adjusted to all electricity subsidies, and subsidies for electricity is relatively stable after upgrading the quality of photovoltaic power plants becomes urgent. EPC as power plants to control the quality of the core, you need to assume sufficient responsibility to the industry in order to establish confidence. Specifically, the following:

1, do firmly EPC

EPC refers to the design, procurement and installation of the general contractor, and are split to various enterprises to implement its investors before the photovoltaic industry, which led to the final quality no commitment Station. Of course, some investors because of previous industry is relatively new, there are few EPC have a great experience in all aspects, is a last resort. Now, if the EPC or not these three together; or that although consolidation, but the procurement or design choices in the hands of investors, then the power plant quality is really worrying.

We are also pleased to see that there are a few domestic manufacturers began to insist on doing the EPC general contractor, and provides guarantees electricity power stations.

2, power plant construction grading

Build quality photovoltaic power plant to be all of a sudden turn for the better, it seems more difficult, because the mentality of investors is difficult to immediately adjust over. So you do not want to assume the risk if no project to undertake EPC, you need to offer for classification treatment plant construction, and assembly factory grading which is a reason to allow the formation of such an industry standard, and gradually change the mentality of investors;

Of course, some people will say how to set grading standards is a challenge. This is actually quite simple, for investors, concerned with the generation capacity, as long as the level of power output guarantee to measure it. For example, a site with photovoltaic resource maps, for example, on the basis of the maximum power output hit 0.95 fold as Class A; 0.9 fold for Class B; 0.85 for class C; on this basis can also be subdivided. Of course, before the grading offer, the need for land and housing in the survey, as well as understanding the environment and future plans and so on; for example, there is a certain time shadow blocked the project, can commit generating capacity in accordance with the Class B, but pricing is based on A-level to newspaper .

If you worry about the local resources in recent years, changes in irradiance is too large, can be used as a basis for commitment system efficiency based on the measured radiation resources; recommend using a third-party site measurement data, CMA data, and three NASA data as a weighted numerical convergence according to the resource reference value; its weight recommendations were 60%, 20%, 20% (note the same inclination at data components); system efficiency, A, B, C class divide in the eastern region mainly in the 75%, 73% and 70%; mainly in the western region of 80%, 78% and 75% is divided; note system efficiency refers to the cumulative amount of the annual index, on any given day, month or season in efficiency are not the same , without much actual reference value;

3, using the BT model

PV power plant with a general contractor in the background under certain financing to acquire greater autonomy and profit margins (full BT way is to determine the construction side of the project by bidding through the BT model, the construction side set up the project company responsible for the project company financing, investment and construction projects, in the form of repurchase by the owners after the project is completed). The case of photovoltaic power plants as a stable income products, while the EPC for its own technical strength is also confident of taking BT model is the best option.

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