Source: economic daily 2015/12/24 8:43:09

After nearly ten years of efforts, China's new energy development has been in the forefront of the world, the world's largest scale of wind power and the fastest growing of photovoltaic power generation. The new energy supply and power generation increase year by year, and play an important role in the adjustment of energy structure in China. At the same time, the relevant state departments should strengthen the overall planning, establish the market mechanism of new energy consumption, strengthening peak power management.

Reporters learned from the national Power Grid Corp in December 22nd. As of November 2015, the national power grid dispatching scope, the total installed capacity of the new energy grid reached 146 million 260 thousand kilowatts, accounting for 12.4% of the total installed capacity. From January to November, the cumulative power generation of new energy was 231 billion 700 million kwh, accounting for 5.6% of the total power generation.

Zhang Zhengling, deputy director of the national Power Grid Corp spokesman and development planning department, told reporters that in 2014, the installed capacity of grid connected wind power and photovoltaic power in China exceeded 100 million kilowatts, and the total annual power generation capacity was nearly 180 billion kilowatt hours, which is equivalent to the annual electricity consumption of a moderately developed province. This year, the accumulative grid capacity of wind power in China will still be the first in the world.

Duocuobingju consumptive potential

In 2015, the relevant government departments issued the "improve the power operation regulation to promote clean energy more full hair guidance" and "renewable energy development" to carry out the nearest consumptive pilot wind power clean heating work "and a series of policies to promote the sustained and healthy development of clean energy.

The State Grid has accelerated the construction of the power grid to ensure the grid and transport of new energy. As of November 2015, the total of 330 thousand volts and below the new energy grid project invested 28 billion 770 million yuan. Construction of the national air pollution prevention and control action plan "four exchanges and four straight" UHV project and Jiuquan Hunan UHVDC project.

At the same time, optimal scheduling, best new energy consumptive. The capacity of peak regulation for thermal power is dispatched to the maximum, and the pumped storage power station is fully played. The advanced control method is used to optimize the active power output of the wind farm. The extended wind and electric field automatic power generation control system (AGC) covers the range, making maximum use of the transmission capacity of the channel. From January to November, North Hebei increased electricity by 358 million kwh through the wind field AGC, up 45% over the same period. Increase the inter provincial power grids mutual efforts. In 2015, the Northeast power grid was organized and implemented for 290 times, and the power of wind power was increased by 780 million kwh. We will increase the scale of new energy transactions across provinces and regions. In November before 2015, the State Grid sent wind power and photovoltaic power for 26 billion kwh across provinces and provinces, an increase of 48% over the same period.

Consumptive contradiction still need to administer

With the rapid development of new energy consumption, operation contradictions have become increasingly prominent. The wind resources in China, a large scale, far away from the load center, it is difficult to place consumptive. The power supply structure of the "Three North" areas in the new energy source is single, and the specific proportion of the flexible regulation power, such as pumped storage and gas power stations, is low. In the past two years of economic slowdown, electricity growth slowed, many factors, this year new energy consumptive contradiction is more prominent.

The new electricity market can not support the rapid growth of all kinds of power supply, resulting in a decline in the number of new energy and thermal power and nuclear power utilization hours.

The power structure in China is mainly thermal power, especially in the "Three North" area, accounting for 70%. The proportion of the flexible power supply of pumped storage and gas in China is only 6%, and the "Three North" area is less than 4%. The power supply structure is not reasonable, which leads to the lack of the system peak regulation ability.

The state has promulgated the "12th Five-Year" wind power, solar power and other special plans, but the "12th Five-Year" power grid plan has not been released yet, and the new energy base delivery channel has not been implemented. Power grid project approval lags behind the new energy projects, new energy rich regions have varying degrees of problems of inter provincial channel capacity, has become rigid constraints of new energy consumption.

It is understood that compared with foreign countries, China's market mechanism to promote new energy consumption has been seriously lagging behind, only the local area to carry out a pilot wind generation right trade, ancillary service trade etc.. Because of the lack of conventional power supply to provide auxiliary service compensation mechanism, thermal power enterprises generally have no enthusiasm for the peak of new energy.

Scale development needs all efforts

Vigorously developing new energy is a major strategic decision of the country, and also an objective requirement for the sustainable development of our economy and society. It is significant for promoting energy production and consumption revolution and promoting the construction of ecological civilization. "We judge," 13th Five-Year "period, electric power demand will pick up growth." Zhang Zhengling said, "clean energy will play a leading role in the future energy development, and wind power, solar power and other new energy will become the main force of clean development. In order to realize the large-scale development and efficient utilization of new energy in China, it is necessary for all parties to work together. "

Experts suggested that, from the three aspects of the impact force of new energy consumptive power grid, load, etc.. To improve the power supply flexibility in power supply, expansion of the scope of the grid in the power grid link, the implementation of demand side response, increased demand for electricity load in the link, is to realize the three major ways of high penetration of new energy resources in china.

In addition, we should strengthen the overall planning. At the time of preparation of the national "13th Five-Year" energy planning of key period, overall plan of new energy and new energy consumptive market, coordinating with other power supply, power supply and power grid planning, lack of coordination, all kinds of power to change the past only released special planning practices, to achieve unity of power system planning. The two is to strengthen the construction of the market. The implementation of the national electric power system reform deepening the relevant requirements, reasonably determine the government, power generation companies, power grid enterprises and users and other parties to the main responsibility and obligation in the new energy consume, is conducive to the establishment of new energy consumptive market mechanism. The three is to strengthen the management of peak power supply. Reasonable control of the development scale of heat supply unit and self-made power plant, and clear the relevant requirements of the self-contained power plant participating in the system peak regulation.