Wind power energy utilization rate acceleration

In recent years, a large number of distant energy sources that have been exposed to overseas wind power assets have found that China’s wind power asset generation efficiency is very different from that of the United States. Compared with U.S. wind power assets, under the same wind resources and power generation capacity, China’s wind power assets generate less than 15%-20% of U.S. electricity. This time, the long-term energy that has been dedicated to the development of smart energy has begun to make a fuss about the utilization of energy efficiency of wind power assets.

Increased demand for increased energy utilization of wind farms

It is understood that energy use efficiency (abbreviated as EBA) is the ratio of actual power generation to theoretical power generation. It is a very objective evaluation system for wind farms. It was first proposed by the International Electrotechnical Commission, but it has always been adopted in domestic wind farms. not much.

The reason is that the first difficulty is that the computational difficulties exist in the theoretical power generation, and it is necessary to accurately grasp the wind resources; the second is the difficulty of accurate calculations. Software such as SCADA alone cannot be mastered, and an actuarial management information system is required. . Li Heng, head of the long-term energy comprehensive solution, told reporters that there is a special situation in China, that is, the cause of the loss of power generation is very complicated, and there are other uncontrollable factors such as power cuts.

However, at the moment, this situation is slowly changing. As China's wind power enters a stable stage of development, wind power investment companies have gradually become rationalized, shifting from simply focusing on the number of installations to “quantity and quality”, which has produced a more reasonable and urgent demand for scientific management of energy utilization.

Li Heng said: “The current time availability of Chinese wind farms has reached an average of 98%, and it is at the world's leading level. After the fan has entered a stage of high time utilization, it will continue to use such an index evaluation system and actually enters a Misunderstanding, because it obscures the difference between good wind turbines and bad wind turbines, good wind farms and bad wind farms, and from the perspective of power generation, it has little significance for value creation. The average number of hours of wind power generation from China is not high. It can also be seen from the fact that the evaluation criteria based on time availability no longer apply."

High energy utilization potential

Li Heng said: “Energy utilization has a lot of room for improvement. In the past, the wind farm management system did not incorporate local wind resource data and basic wind farm data. Now, through the use of energy utilization management, the actual data of wind farms are included. Management system to improve the accuracy of management."

In order to help wind farms realize standardized management of the entire life cycle and improve the power generation efficiency of wind power assets, Vision Energy has launched the Green Cloud platform that uses energy efficiency (EBA) as the core evaluation index, and subsequently introduced the latest EBA module.

According to reports, the wind farms in operation, through the artificial intelligence of the EBA module and the accurate calculation of data mining technology, can draw the power generated by various factors and the proportion of the impact on EBA, allowing investors and owners to clearly see where the losses are. . The EBA assessment module can objectively measure the energy capture level and power loss level of different wind farms in order to establish accurate performance assessment indicators. In addition, from the perspective of the whole life management of wind farm assets, the EBA evaluation module is used to interface with the previous investment decisions, and the energy efficiency of the previous asset investment is calibrated. In the future, the EBA indicator is escort for the previous period. During the operation phase of the wind farm, asset operation and management is transparent, and “diagnostic files” will be established for future technical transformation of wind farms. This will help owners to rationally select asset optimization programs and social asset management services.

Industry veterans have stated that the value of the EBA system is not only the potential to effectively tap stock assets, but that the more important strategic value is that it can make this huge, but lacking service standard, operational and maintenance market mature and healthy.

Vision Leading: Active Practice of Increasing Energy Utilization

Li Heng said: "The integration of WindOSTM WindOSTM operating system and GreenwichTM cloud platform can bind the wind farm flow field model and the fan state model together, and calculate the power loss at any time and in any dimension. The analysis of the wind resource maps and the precise calculations required for the establishment and operation of the EBA indicator system can be completed on the Vision Green Cloud.”

In the United States, several wind farms such as Pattern Energy are currently connected to the Wind OSTM operating system to evaluate the actual operation of wind farms based on the EBA framework in the cloud and establish an EBA-centered asset optimization system through big data. Excavate to enhance asset efficiency. One U.S. wind farm that uses the WindOSTM operating system from the Vision Smart Wind Farm has an EBA of 90%. U.S. New Energy Corporation, which uses the Wind OSTM operating system, will also use Vision's GreenwichTM cloud platform to interface with the Wind OSTM operating system to form a comprehensive digital model from the wind turbine to the wind farm, completely through the wind farm. The whole life-cycle asset value chain designed to operate in wind farms provides a big data foundation for improving the profitability of wind power assets.

In China, Vision Energy cooperated with a leading new energy developer in China to evaluate the actual operation data of a certain wind farm project in Hebei based on the Wind OSTM operating system and found that the project's EBA was only 80.82 from January to August 2014. %. As a result, Vision Energy's EBA technical team started with wind turbine reliability, wind turbine performance, on-site involvement and other dimensions, and worked with customers to develop and implement EBA upgrade solutions. The data shows that during the four months from September to December 2014, the average EBA level of the project was 91.99%, a rise of 11.17%.

At present, apart from using more than 3 million kilowatts of wind power assets of Yuanjing Energy, the mainstream wind power investment companies such as China Resources, China Guangdong Nuclear Power, and Longyuan are also increasingly focusing on energy utilization through various means and focusing on Its accuracy has improved.

A related person in a company said that Green Energy of Vision Energy made China's wind power industry aware that this is a feasible wind farm efficiency improvement solution.