I. New Energy Installation Capacity Status
1. International status
By the end of 2015, the accumulated installation capacity of wind power and solar energy in our country had exceeded 170million kwh, which had been higher than that of 1/4 of the whole globe. Our country has become the first largest country of renewable energy installation.
2. Home status
The installation capacity of wind power generation of our country has reached 128.3 million kW. The three areas of northeast area, North China and Northwest China account for 81% of the installation capacity of the whole country. Of which, the wind power installation capacity of four provinces of Inner Mongolia, Xinjiang, Gansu and Hebei exceed 10 million kW. The installation capacity of wind power of five provinces is between 6~10 million kW.
The installation capacity of solar power generation has reached 41.58million kW, the west provinces accounts for 50% of the whole country, of which, Gansu, Xinjiang and Qinghai centralized solar installation capacity has exceeded 5 million kW, Jiangsu and Zhejiang distributed solar installation capacity has exceeded one million kW respectively.
Managing regional distributed solar of State Grid Corporation of China increases to 15691 households about 2.08 million kW. The accumulated grid integration is 22627households and the capacity is 4.73 million kW. Of which, solar poverty-supporting project covers over 300 villages and the grid integration capacity is 37700kW.
It is estimated that in 2020, the installation capacity of new energy power generation of the whole country will exceed 150million kw. The wind power development mainly focuses on the Northeast China, North China and Northwest China. accounting for 75% of the whole country. The solar energy wind power generation adopts the integration of centralizing mode and distributed mode, of which, the installation capacity of centralized mode solar power station will reach 80 million kW, it mainly focuses on the western area such as Qinghai, Gansu, Xinjiang and Western Inner Mongolia, etc. the distributed solar power generation will reach 70 million kW. It mainly focuses on the middle area of Zhejiang and Jiangsu.
II. Consumption Predicament
1. Large proportion of installation capacity and power generation
In the 14 provinces of the whole country, the renewable energy has become the second largest energy, of which, the new energy installation capacity of Gansu, Ningxia and Xinjiang accounts for over 30% of local power generation installation capacity.
In 2015, the wind power generation capacity of our country was 185.1 billion kWh, the average utilization of wind power equipment in the whole country was 1728hours, the utilization of wind power generation exceeded 2000 hours, solar energy power generation was 38.3 billion kWh, the average utilization of solar energy power generation equipment was 1164hours, the utilization of solar power generation equipment in 6 provinces exceeded 1500 hours.
At present, the new energy installation capacity account for 21% and 11% of the highest electricity load and total installation capacity of the country respectively. The new energy installation of east Inner Mongolia accounts for 171% and 35% of the highest electricity load and total installation capacity respectively, new energy installation accounts for 143% and 40% of the highest electricity load and total installation capacity.
2. Insufficient cross-province and cross-region power transmission channel is difficult for realizing new energy consumption in the vast scope.
The capacity of the existing new energy transmission channel is only 14 million kw, accounting for 10% of new energy installation capacity. There are 7 ten million kw wind power generation base in North China, Northeast China and Northwest China. At present only ±800 kv Hami-Zhengzhou Extra High Voltage DC project has been completed. The±800kv Jiuquan-Hunan Extra High Voltage DC Project began in May 2015 and it is planned to put into production in 2017. It is 2-3 years later than Jiuquan Wind Power generation base.
3. Unreasonable power structure and much insufficient system peak load regulation capability
The fire electricity in North China, Northeast China and Northwest China accounts for 70%, while the proportion of the pumped-storage, gas-fired and other flexible adjustable power source is not more than 4% and it is only 1.5% in Northeast China. In the fire electrical installation unit in Northeast China, the proportion of heat supply unit is high. The proportion of heat supply unit in Jilin reaches 78%. The heating season in winter, the contradiction between heat supply and new energy consumption is very serious. According to the statistics, in 2015, 65% of abandoned wind took place in the heating period and the low valley abandoned wind accounts for 80% of the total abandoned wind.
4. Unsound policy mechanism influences the cross-region consumption of new energy
In the long run, the electric power in our country has been balancing by provincial area and the cross-province and cross-region transmission needs the clear plan of the state at the state level. Generally, the clear outside transmission orientation and consumption amount has been confirmed and clear before a large sized hydraulic power base is built. At present, our country is short of consumption plan of the large sized new energy base consumption, the market mechanism of cross-province and cross-region consumption of new energy is not established. Under the insufficient power consumption demand and the superfluous installation capacity, the willingness on the consumption of new energy of other provinces is not strong.
III. Consumption Settlement Modes
1. Strengthening power grid construction
In 2015, the investment for new energy grid integration and transmission line of State Grid Corporation of China was RMB 9.6 billion Yuan, the newly increased new energy grid integration and transmission line was 3797km, which met requirements of 313 wind power projects and 1708 solar power generation grid integration project, of which, the power transmission project of the province: a batch of provincial supporting power grid project of Zhangjiakou of “Three Stations and Four Lines”of 500kv of power distribution project, Jilin-Yu power transmission project were built and put into operation and 1071 km of power transmission project was increased in the province.
Cross-province and cross-region channel: speed up promoting construction of Ximeng-Shandong Ultra High Voltage IC Project, Ningdong-Zhejiang Ultra High Voltage DC Project Construction, West Inner Mongolia-Tianjin South Ultra High Voltage AC Project, Jiuquan-Hunan, Ximeng-Jiangsu, Shanghaimiao-Shandong Ultra High Voltage DC Project
During the “Twelfth Five-Year Plan” period, the accumulated investment was RMB 84.9 billion Yuan for new energy grid integration and transmission project of State Grid Corporation of China. It is newly increased of new energy grid integration and transmission line of 37000km.
2. Strengthening the prediction and dispatching
In 2015, State Grid established solar power generation power prediction system and information monitoring system, covering over 500 solar power generation stations. The predication precision is over 85%.
Optimize the operation of water power and cascade reservoirs, plan and arrange the water and power unit to cooperate the operation of new energy; make full use of the pumped storage power stations of Pushihe of Liaoning, Baishan of Jinlin, the thirteen mausoleums of Beijing, the accumulated wind power consumption is 3.35billion kWh.
Through the mutual support of power grid peak load regulation, the new energy power generation consumption is 4.9 billion kWh. It is to improve the exchange scale of cross-province new energy and the outside power transmission is 29.4 billion kWh.
Implement cleaning substitution and the consumption of new energy is 2.7 billion kWh; implement electricity substitution and the power substitution is 76 billion kWh.
3. The Work Plan in the Thirteen Five-Year Plan Period
1）Big Grid Construction
In 2020, the state grid will form two grid patterns of east part and west part. The west power grid integrates the different resources types such as water power in southwest region, wind power, solar energy and coal electricity in northwest region; it is to solve problems of the intermittence, randomicity and uncertainty of new energy grid integration power generation.
The east power grid integrates the main power receiving area of Yangtze River Delta, Beijing, Tianjin, Hebei and Shandong, Central China and East China etc., making full use of peak load regulation capacity, it is planned to expand the consumption market scope of clean energy.
Before 2020, the grid integration and transmission of average newly increased wind power generation will be 25 million kW and solar power generation of 20 million kW. At the end of “Thirteen Five-Year” period, the scale of the state grid’s power transmission from the west to the east will increase to 310 million kw from present 110 million kW. The new energy transmitted to the load center of the Middle East from Northeast China, North China and Northwest China through ultra high voltage power grid will be about 148 million kW.
In 2016, speeding up project construction of the ultra high voltage project and ultra high voltage DC project of Jiuquan-Hunan, Huaidong-Wannan of “National Gas Pollution Prevention Action Plan”, it is planned to verify the construction of a batch of ultra high voltage projects of Zhangbei Outside Transmission of Ultra High Voltage AC, Zhalute-Qingzhou Ultra High Voltage DC and etc. The third is to speed up the construction of a batch of pumped storage power station. In 2016, Xianju pumped storage power station of Zhejiang and Hongping pumped storage power station are built in 2016 and the four pumped storage power stations of Zhen’an of Shaanxi, Fukang of Xinjiang, Jurong of Jiangsu and Xiamen of Fujian are verified to be built.
2) Power distribution network building and reconstruction
Strengthen intellectual power distribution network, speed up the energy storage technology breakthrough, improve the consumption capacity of distributed power electrical source and diversified load consumption, realize the plug and play and coordinated operation of large grid, it is planned to meet the development requirements of distributed new energy in middle and east area.
3) Carrying out sunshine poverty alleviation activity
It is planned to solve 39100 natural village problems of no power supply and electrical power supply reconstruction of 86700 natural villages. It is planned to build poverty-alleviation solar power generation grid project in management area, complete the task of 319000 poverty supporting service in five counties (regions).