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Mobile WebSiteRecently, the National Energy Board issued "on the development of renewable energy," thirteen five "planning implementation of the guidance" to the wind power and photovoltaic and other renewable energy targets collective increase, to further accelerate the optimization of energy structure. At the same time, "2017 ~ 2020 new wind power construction scale program" "2017 ~ 2020 photovoltaic power plant new construction scale program" and other renewable energy related documents issued simultaneously.
"2017 ~ 2020 new wind power construction scale program" clear, 2017 ~ 2020, Beijing, Tianjin, Hebei and other 25 provinces (autonomous regions and municipalities) plans to accumulate 110.41 million kilowatts of wind power installed capacity in 2020 and 126 million kilowatt. "2017 ~ 2020 photovoltaic power plant new construction scale plan" clear, 2017 ~ 2020, in addition to Beijing, Tianjin, Shanghai, Fujian, Chongqing, Tibet, Hainan 7 provinces (autonomous regions and municipalities) to manage the scale of local construction, Gansu, Ningxia (Including the Corps) 3 abandoned light "hardest hit" temporarily arranged construction scale, Hebei, Shanxi, Inner Mongolia and other 21 provinces (autonomous regions and municipalities) plans to accumulate 54.5 million kilowatts of photovoltaic power plants, leading technology base 32 million kilowatts , By 2020 planning and network 128 million kilowatts.
Wind power new energy is "scenery"
Public information, as of 2016, China's total renewable energy installed capacity of 570 million kilowatts, wind power installed capacity of 149 million kilowatts, photovoltaic power generation capacity of 77.42 million kilowatts. The first half of this year, renewable energy power generation installed capacity of 600 million kilowatts, of which wind power installed capacity of 154 million kilowatts, photovoltaic power generation installed capacity of 102 million kilowatts, respectively, close to the "three five" plan wind power 210 million kilowatts and photovoltaic 105 million kilowatts The first half of the year, all kinds of renewable energy power generation installed capacity of 37 million kilowatts, accounting for about 70% of all new power installed capacity. This fully shows that China's energy structure to further speed up the pace of further optimization of energy structure.
However, although the wind power photovoltaic "scenery" again, but for some time, due to a variety of reasons lead to our "abandoned wind" "abandoned light" phenomenon is very serious. Earlier this year, the National Energy Board will be Jilin, Heilongjiang, Gansu, Ningxia, Inner Mongolia, Xinjiang Autonomous Region, Xinjiang Corps 7 areas included in the "abandoned wind" red warning area, Gansu, Ningxia, Xinjiang, Corps 4 abandoned " ", The above areas are" strictly control wind power and photovoltaic power generation new construction scale "area, must" double abandon "situation after the release of the situation, then you can imagine, the development of scenery and energy will reproduce the" blowout "trend.
Scenery "double abandoned" with objectivity
Our scenery "double abandonment" has its distinctive objectivity, that is, it has obvious regional, seasonal and time.
China's light energy "double abandoned" red warning of the hardest hit concentrated in the northwest and northeast regions, the most prominent in the northwest region. Data show that by the end of 2016, China's "three North" region wind power installed capacity of 115 million kilowatts, accounting for 77% of the total installed capacity of wind power, northwest northeast region accounted for 58%; "three North" region of solar power installed capacity of the country 74%, only northwest accounted for 41%. Inner Mongolia and Qinghai, China's largest wind power and photovoltaic power generation provinces, and these provinces can not complete the local energy consumption, if the delivery capacity is not met, the scenery "double abandoned" will be inevitable. In fact, since 2010, the scenery "double abandonment" phenomenon is getting worse, to 2016 national air volume of 49.7 billion kwh, abandoned wind rate of 18%; national light volume of 7.04 billion kwh up to 11% Scenery on behalf of the wind and energy development and the subsequent development of energy consumption has not been a very good solution, "three North" area scenery "double abandonment" problem is very prominent.
Scenic energy has a typical seasonal and timeline. Wind power output is mainly concentrated in the winter and spring, accounting for about 60% of the year; photoelectric mainly concentrated in the summer and autumn, also account for about 60% of the year. Wind power season is just the northern winter and spring heating period, when the thermal power supply unit to run the wind power consumption narrow space; coupled with our traditional Chinese New Year, New Year holidays and other holidays during the holiday, stop production and overlap with the heating period , The energy consumption of the scenery is even worse.
Scenery energy "acquired"
China's energy and energy installed mainly concentrated in the "three North" area, and electricity load concentrated in the eastern central region. Affected by the level of economic development, "three North" area consumption is limited. Especially in recent years, electricity growth slowed down, but the wind energy installed capacity is rising rapidly, beyond the electricity growth, but also beyond the peak surge support service capabilities. Especially in 2016 in order to catch up with the national policy to enjoy a higher price, there have been rushing around the upsurge, resulting in a large area of nest phenomenon.
China's power structure to coal-based, in the scenery and energy concentration of the "three North region, the proportion of thermal power to about 70%. Flexible power accounted for only 7.7%, only 37% of the wind energy installed capacity, flexible power supply capacity of the maximum adjustment can not meet the energy consumption of scenery. In addition, in recent years, part of the high energy consumption unit-owned power plant developed rapidly, and do not participate in the system peaking, the growth of its power generation is bound to cause public power plants and wind energy to reduce the pressure to participate in peaking.
Needless to say, the scenery of the new energy is the biggest pain point is the cross-provincial transmission channel this bottleneck problem. "On the development of renewable energy," thirteen five "planning implementation of the guidance" that the strengthening of transmission channel construction will become the new energy "thirteen five" period of development key. At present, the "three North" region inter-provincial transmission channel focused on outgoing coal, the existing new energy delivery capacity by the system stability, it is difficult to get full play. The first performance in the channel planning lag, China is usually approved by the grid project lags behind the power generation project, the end of 2016, "three North" new energy installed capacity of 163 million kilowatts, but the delivery capacity of only 34 million kilowatts, only 21%, but also To take the task of coal and electricity. Second, the existing delivery capacity can not be fully exploited. On the one hand, the special high voltage grid is still in the development of the transition period, "strong and weak weak" features obvious; the other hand, the wind turbine over-voltage tolerance and grid capacity is very close, once the end of the fault, will lead to large area Off the net.
In addition, due to the new energy sources with the system volatility, but also to the conventional coal energy on the system to adjust a greater burden, conventional power not only to follow the load changes, but also balance the new energy output fluctuations, when the new energy output exceeds the system adjustment range , Must control its output to ensure that the system dynamic balance, which is the scenery "double abandoned" has become a move.
At present, we are pleased to see that since the second half of 2016, through the group work together, more measures simultaneously, coupled with the power demand to pick up, coal cost is high, the objective also helped boost the energy consumption, by 2020 is expected Reduce the rate of discarded light to 5%. However, due to the new energy consumption involved in the systemic problems involved has not yet been fundamentally resolved, industrial policy, market mechanisms, technical measures and other aspects of measures have not yet fully in place, with the development of scenery and other gushing out of the wind and other new energy The consumption will become a long-term fundamental task.
