The main problems facing China's wind power supply
One, the wind resources in China, large scale, far away from the load center, West, East, Gansu, northern Hebei Province 4 area total size of wind power installed capacity accounted for 50%, wind power accounted for only 10% of the country, it is difficult to elimination on the spot, it and new energy resources in Europe and the United States, balance in the development mode dispersion is quite different. New energy sources such as the US, Spain and other countries 80% grid, distributed access to 10000 volts and below a smaller scale, elimination on the spot.
Two is the construction of wind power capacity of power consumption faster than the region's growth rate, wind power grid scale beyond the power grid transmission capability. The "Twelfth Five Year Plan" since, the northeast area of the whole society electricity consumption grew by 5.6%, but the grid connected wind power an average annual increase of 25.3%, grid connected wind power growth rate is far higher than the local electricity demand growth. According to CEC power supply and demand forecast is expected in 2014 sent by the power balance of participation, the Northeast regional electricity supply surplus still reached 20GW, in addition to lack of transmission capacity, is caused by the root cause of surplus power. Although the 2013 in the efforts of all sectors to abandon wind situation has improved, but abandoned the wind rate of Jilin, Gansu, Mongolia East, Hebei, Heilongjiang, Mengxi, is still more than 10%, of which Jilin and Gansu abandon wind rate is as high as 20%.
Three, China's wind power concentrated in the "Three North" area power supply structure of a single, pumped storage power station, gas such as flexible to adjust the power proportion is less than 40%, winter heating units of thermal power accounted for more than 90%, only about 10% of peak shaving depth. Europe and the United States and other nations to fast track the gas power plant load and pumped storage proportion high, 34% in Spain, 1.7 times the wind; the United States up to 47%, is 13 times of wind power.
From the local perspective, the "Three North" area is restricted by the small size of the market, peaking factors such as resources are limited, if there is no delivery channel support, the further construction of large-scale wind farms have very limited space. But as a whole, the current wind power only accounts for the proportion of installed power share of about 6%, while peaking in the Middle East is rich in resources, but in wind power market potential has not been fully brought into play. This is mainly because between regional power grid in China still very thin Xi, trans regional transmission capacity is insufficient, wind power can only be elimination on the spot and balance, difficult to optimize allocation across the country, resulting in serious waste of wind power resources.
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