Debugging of the truth: the photovoltaic power station project running the latest trends

commissioning is to ensure that all systems and solar panels of photovoltaic power station in accordance with the project owner or the operation of the end customer requirements for design, installation, testing, operation and maintenance process.

in the photovoltaic industry, public utilities development or building photovoltaic power station entity can't be in the whole operating cycle is the plant's owner or the owner, there may be different, the industry, including lenders and shareholders, investors, and debug the program in the optimization of output at the same time, to ensure the safe operation of the assets and reliable is very important.

thoroughly, correct debugging is helpful to improve the level of power plant's safety and quality control, to ensure the compliance of assets in accordance with relevant power grid norms and standards and working as expected. In the part of debugging test also provides a benchmark, in the whole operation of photovoltaic power station lifetime, can according to the benchmark for regular inspection and maintenance.

DNV GL senior engineer Ralf Meyerhof said: 'the debugging can ensure that investor expectations of photovoltaic power station. From the point of view of investors, a successful design, construction and operation of photovoltaic assets is in order to achieve the best output, the biggest gain. Therefore, project operation strategy is to seek the maximization of income and financial performance, this is due to financial and economic considerations. Debugging in front of the grid can be found that need improvement of questions or problems, ensure the safe operation of the plant. '

according to the photovoltaic power station debugging practitioners and such like Enertis, DNV, GL and Alectris professional company, from the Angle of contract, debugging is also a critical stage. During this period, the ownership of the project for provisional acceptance certificate ( PAC） From the contractor in the form of transfer to the owner.

DNV GL solar head of Ruben Ron said, PAC is vital for warranty, the warranty period is two years commonly. 'Once the PAC, design, procurement and construction ( EPC) Supplier will have the responsibility to repair warranty period any fault. '

' if missing debugging steps, there will be failed to find the component crack, damage to the cable, and other issues of risk. Debug concept '

while debugging appears to be a detailed inspection process, but if done well, from parts arrived at the scene of the moment, it becomes a key procedure in the process of the whole power plant installation.

Meyerhof in a tree terms, explains the debugging process: the implementation of the ideal set of string is the leaves, inverter is a branch, substation is the trunk. From the leaves to the trunk to debug, and not just in the final debugging substation. The correct debug method is a child a child part of debugging, to ensure that all parts can work normally.

'said to the son, we mean the set of strings, set by about 25 30 components. Do you want to test group list of voltage and current. '

Meyerhof explains, in the early days of the German solar market, the debugger is a widely used approach.

'system, the average size of kw, and then the mw and mw, finally we see today to 100 mw or bigger power station. Practice is basically the same - — Starting from the smallest subsystem debugging, until the biggest subsystem, '.

debug the impact on the long-term financial performance

performance than ( PR) Refers to the report in a given period, on the basis of the nameplate rating power photovoltaic power station, the ratio of output power between measured value and forecast.

Enertis owner engineer manager Jose Merlo explained, in order to objectively measure the plant PR, it is important to the contract phase is to develop a suitable program, this program can be used to prove that power plant has been put into use, all the equipment to normal operation state.

'once that happens, the main is to ensure that collect information on PR input devices can work normally, for example, power plant instrument, or the weather stations. These devices are very sensitive, so you must be careful cleaning and processing. '

' project performance examination is very important, it can provide the owner with the first benchmark, also it is the design of power station operation conform to the initial setting and financial requirements. '

thermal debugging and commissioning procedures

photovoltaic power plant debugging are divided into two stages: the cold commissioning and hot commissioning. Photovoltaic power station is a kind of power balance, hot commissioning of the plant temporarily closing, used to power in a given time of specific components in power station and its performance is an important examination.