Plan for the development of wind power in advance based on Guodian

Recently, Yan Luguang, an academician of the Chinese Academy of Sciences and the former director of the Institute of Electrical Engineering of the Chinese Academy of Sciences, said in an interview with a reporter from the China Science Journal that in order to realize the sustainable development of wind power, wind power construction must be planned in advance based on the State Grid.

In the past 6 years, the proportion of wind power installed capacity in China has increased from less than 1% in the past to 5.3%. This proportion is roughly the same as that of the United States, but in some areas, the proportion of wind power is much larger than this figure. For example, the current proportion of wind power in the Northeast has reached 30%.

In this regard, Yan Luguang said that China's wind power development and power grid development, market absorption capacity did not achieve effective convergence. “When the scale of wind power is small, free development has little impact on the power grid. However, once the scale is large, not only is there pressure on the peaks, but it is neither scientific nor economic to shut down the thermal power unit to ensure the acceptance of wind power.”

During the “Eleventh Five-Year Plan” period, wind power grid-connected installed capacity increased by an average of 86%, and the average annual growth since the “Twelfth Five-Year Plan” was still as high as 30%, while the market absorption capacity was far behind. Large-scale wind power is difficult to digest, which will lead to the phenomenon of “disappearance of wind” in each province.

"At present, China's large-scale wind farms and large grids have not been encountered by the other countries in the grid connection and consumption problems, but they are not unresolvable." Yan Luguang said, "The key to solving is to rely on grid-based Planning ahead for wind power construction must be based on this premise."

Yan Luguang believes that the current mode of wind power development by the provinces is not desirable. If the main focus of the national grid is to harmonize various types of power supply planning, it is necessary to plan grid connection and consumption before the completion of the wind farm. Not only can ease the pressure on the peak of the power grid, but also can effectively improve the development benefits of wind power and greatly reduce the proportion of wind power.

At present, China's wind energy resources are mainly distributed in the "Three North" region, but the current electricity demand in these regions is limited. If large-capacity power transmission cannot be realized, the wind farms in these places will face tremendous pressure.

For the current wind power grid connection problem, Yan Luguang believes that smart grid may help solve. He said that in the past, the power dispatching department mainly controlled the power generation side load, and the power supply was relatively stable and less volatile; now the development of a smart grid requires that not only the power generation side be regulated, but also the power consumption side can be regulated. After the more volatile power sources such as wind power and photovoltaic power generation are connected, the load changes on the power side and the power generation side will be more conducive to the balance between the sending end and the receiving end, so as to maximize the benefits of the power generation equipment and the power grid.