The Electric Power Industry Development In The New Land

- Oct 20, 2017 -

Clean, low carbon, high efficiency intelligence. Practical action interpretation of sonorous footsteps of transformation and upgrading with China power industry, the interpretation of the essence of market reform and innovation. When the seeds of hope are sown, when the hard work pays, when the wisdom of the spring irrigation, five years waiting for usher in not only the harvest of traditional crops, but also the cultivation of many high-quality new varieties.

Taolibuyan xiazichengqi. When the electric power industry to the development of the times, get rid of the shadow of coal pollution, new energy consumptive bottleneck farewell, then achieve gorgeous, the development of the industry has also ushered in the new land.

Supporting economic and social development capacity continues to increase

From 2011 1 billion kw to 1 billion 650 million kW in 2016, China's electric power industry to a new chapter has the ambition of writing. Since the end of 2011, China's power installed capacity reached 1 billion 60 million kilowatts, more than the United States to become the world's first power installed power, China's power installed with an average annual increase of 100 million kilowatts of installed power generation speed, size and power output ranked first in the world.

By the end of 2016, the country's total aperture power generation capacity reached 1 billion 650 million 510 thousand kilowatts. Among them, 332 million 70 thousand kilowatts of hydropower, 1 billion 60 million 940 thousand kilowatts of thermal power, 33 million 640 thousand kilowatts of nuclear power, 147 million 470 thousand kilowatts of grid connected wind power, grid connected solar power generation 76 million 310 thousand kilowatts. In 2016, China's total aperture power generation capacity reached 60228 kwh, an increase of 4.9% over the previous year. Among them, hydropower 11748 kwh, an increase of 5.6%, thermal power 42273 kwh, an increase of 2.3%, nuclear power 213 billion 200 million kwh, an increase of 24.4%, wind power 240 billion 900 million kwh, an increase of 29.8%, solar power generation 66 billion 500 million kwh, up 68.5%.

As of the end of 2016, the per capita installed capacity of 1.2 kilowatts, respectively over the previous year and 2010 increased by 1.7 percentage points and 9.5 percentage points; the annual per capita consumption of about 4321 kwh, a year-on-year increase of 179 kwh more than the average level of the world. By the end of 2015, the proportion of electricity in the terminal energy consumption has reached 25.8%.

At the same time, the power system construction and power generation maintain rapid growth, while the power system safety and stable operation and the power supply capacity is further enhanced. There were no major national electrical safety incidents, no large power equipment accidents, no power system of hydropower station dam, overtopping and significant impact of social events.


In 2016, the equivalent availability factor and more than 100 thousand kilowatts of coal-fired power generating units of 92.77%, and more than 40 thousand kilowatts of hydropower unit equivalent coefficient is 92.44%, equivalent availability factor of nuclear power units is 88.77%, each type of unit average non planned outage times to 0.5 times / years in taiwan. The annual average outage time of city users from 10 hours to 5 hours, average outage time of rural users from 30 hours down to 20 hours; city user fault average outage time is 1.75 hours per household, has been with the major developed countries, the reliability of power supply in some developed regions reached the international city advanced level. The availability coefficients of three types of transformers, circuit breakers and overhead lines in 220 thousand kV and above power grids in China are 99.867%, 99.958% and 99.57%, respectively, and the indexes are generally better than those of North america.


Further optimization of power supply structure and layout


With the clarion call of clean, low-carbon and green development, the pace of China's power structure adjustment is accelerating, the power structure is constantly optimized, the proportion of coal electricity is declining, and the proportion of clean energy and renewable energy power generation is increasing significantly.

Continue to promote coal-fired power generation units to eliminate backward production capacity and capacity upgrade. In 2010~2015, more than 28 million kilowatts of small thermal power plants have been shut down. 2016 decommissioning again, the ceasefire group capacity of 5 million 710 thousand kilowatts. At the same time, a large number of large capacity, high parameter, high efficiency and environmental protection unit boarded the stage of history, as of the end of 2016, the unit capacity of 600 thousand kilowatts and above thermal power capacity accounted for 43.4%, 4.6 percentage points higher than in 2011; capacity of 1 million kilowatt thermal power units reached 96 units, ranking first in the world, the total thermal power the unit capacity ratio close to 1/10. In 2016, the average unit capacity of thermal power units in China was 131 thousand and 900 kilowatts, an increase of 3 thousand kilowatts over the previous year.


On the contrary, coal and downstream investment in recent years, non fossil energy sources is showing a booming trend of contests.


In the first half of 2017, China's new wind power installed capacity of 6 million 10 thousand kilowatts, maintained steady growth momentum, the central and southern regions accounted for more than 50%, reflecting the further optimization trend of wind power layout. At the end of June, a total of 154 million kilowatts installed wind power across the country, including the Middle East and South regions accounted for up to 24%, the area proportion dropped to 76%, the layout is more reasonable and effective. China's wind power generation capacity of 149 billion kwh, an increase of 21%; average utilization hours of 984 hours, an increase of 67 hours.

Accelerating the development of solar power. PV leader program, photovoltaic poverty alleviation plan started, distributed photovoltaic, "photovoltaic + feature industries" to obtain rapid development. In the first half of 2017, the new PV power installed capacity of 24 million 400 thousand kilowatts, of which distributed photovoltaic 7 million 110 thousand kilowatts, an increase of 2.9 times. At the end of June, the National PV installed capacity reached 102 million kilowatts, of which, 84 million 390 thousand kilowatts of photovoltaic power plants, distributed photovoltaic 17 million 430 thousand kilowatts. The trend of the new equipment transfer from northwest to central and eastern regions is more obvious. National photovoltaic power generation capacity of 51 billion 800 million kwh, an increase of 75%. At the same time, the first batch of demonstration projects of solar thermal power generation started, and the first large-scale energy storage optical thermal power station was connected to the grid.

In the first half of 2017, all kinds of renewable energy power generation new installed capacity of 37 million kilowatts, accounting for about 70% of all new installed power generation. Up to now, China's renewable energy power generation installed capacity exceeded 600 million kilowatts. In addition to wind power and photovoltaic power generation, hydropower installed capacity reached 338 million kilowatts, biomass power generation installed capacity reached 13 million 300 thousand kilowatts. Renewable energy has entered a new stage of large-scale development. At present, China's hydropower, wind power, photovoltaic power generation capacity has been ranked first in the world.


In the past 5 years, China has also accelerated the pace of safe and efficient nuclear power construction. In 2016, 7 units of nuclear power were put into operation, totaling 7 million 200 thousand kilowatts. As of June 30th, China's commercial operation of the nuclear power unit of 36 units, operating capacity of 34 million 720 thousand kilowatts. In the first half of this year, the total generating capacity of the commercial nuclear power generation group was 115 billion 533 million kwh, accounting for 3.9% of the country's total power generation, and made great contributions to the optimization of energy structure and the control of air pollution.

At the end of June this year, the country and more than 6000 kilowatts of power plant non fossil energy power generation installed a total of 560 million kilowatts, non fossil energy installed capacity accounted for increased from 27% in 2010 to 35%; the proportion of non fossil energy in primary energy consumption increased from 9.4% in 2010 to 12%.

With the upgrading of the thermal power unit structure and the effective promotion of various energy saving measures, the energy efficiency level of the power industry continues to increase. In 2016, the standard coal consumption of power supply for the 6000 kW and above thermal power plants in China decreased to 312 g / kWh, 18 kwh / kWh lower than that in 2011, and the coal consumption of coal fired power units in the world continued to maintain the world's advanced level of 330 kwh / kwh. Shanghai Waigaoqiao three factory average power supply coal consumption is reduced to 276 grams / kwh.

In the strict requirements of national policies, the implementation of air pollutant emission standards for coal-fired units strict power industry, improve the desulfurization and denitration, dust, ultra low emissions and other environmental tariff policy, reduce pollution emissions. By the end of 2016, more than 400 million kilowatts of coal-fired power plants have been completed and ultra-low energy emissions have been improved. Among them, the coal fired units with the conditions of Beijing, Tianjin and Hebei have completed the ultra low emission transformation. In 2016, the scale of coal and electricity energy saving transformation exceeded 200 million kilowatts, and the ultra low emission transformation scale exceeded 100 million kilowatts. Active coal-fired power unit has been fully realized desulfurization, denitrification ratio of more than 92%.

Since 2012, the emissions of major air pollutants, such as soot, sulfur dioxide and nitrogen oxides in China, have declined continuously. In 2016 the national power of dust emission is about 350 thousand tons, down 1 million 200 thousand tons more than in 2011 than the previous year, emissions decreased 12.5%; sulfur dioxide emissions nationwide electricity is about 1 million 700 thousand tons, down 7 million 430 thousand tons in 2011, compared with the previous year decreased by about 15%; the national electricity NOx emissions of approximately 1 million 550 thousand tons, down 8 million 480 thousand tons more than in 2011, more than the previous year decreased by about 13.9%. In 2016, the amount of carbon dioxide emissions per unit of thermal power generation in the country was about 822 grams / kWh, which was 21.6% lower than that of 2005.


Power grid optimization allocation of resources has improved significantly


These five years are the five years of high speed development of China's power grid construction. Based on the actual power grid, power grid enterprises play a role through the development of power grid, UHV transmission, improve the level of intelligent power grid, improve the ability to regulate the balance of system, promote the standard construction and internationalization, and made an important contribution to the development of new energy China. Our country in UHV technology, UHV UHV standards, major equipment and other aspects to achieve full autonomy, from only 3 UHV transmission channel to put into operation 14, the new 9 UHV transmission channel, line length of more than 3 thousands of meters. The voltage level and transmission capacity, transmission distance and constantly refresh the world record, the basic form of power transmission from west to East, north to south for UHV transmission network, make the Middle East 16 provinces, nearly 900 million people from the West with clean energy.

With the UHV, inter regional power grid, regional and provincial power grids, promote the overall development of urban and rural distribution network construction, power grid structure has been improved, the ability of grid resource allocation problems and "card neck" problem has been alleviated. As of the end of 2016, the 220 thousand kV and above transmission line loop length of 64.53 km, 220 thousand kV and above public substation equipment capacity of 36.92 million KVA, an increase of 5.94% and 9.69% respectively. The trans regional transmission capacity reached 80 million 950 thousand kilowatts. Among them, AC and DC networking trans regional transmission capacity of 67 million 510 thousand kilowatts, cross regional power transmission capacity of 13 million 440 thousand kilowatts. In 2016, the UHV line loop length and substation equipment capacity increased by 42.7% and 66.5% respectively compared with the previous year, and the capacity of 35~110 kV voltage class distribution equipment increased by 11.8%.

North, central, East, northeast, northwest, South six regional power grid improvement, power supply capacity, power quality and equipment level significantly improved, rural electricity conditions improved, completely solve the problem of people without electricity consumption. The security, reliability, economy and resource allocation ability of power system have been comprehensively improved, which strongly supports the demand of electricity for economic and social development.

The explosive growth of the new energy consumptive difficult problems have been effectively alleviated. As of the end of 2016, the national grid accumulated wind power, photovoltaic power installed capacity of 130 million kilowatts and 70 million kilowatts, is the world's largest grid connected new energy grid. The first half of 2017, abandoned wind power 23 billion 500 million kwh, down 9 billion 100 million kwh, the most serious abandoned wind power rationing in the situation had improved; the country abandoned photovoltaic capacity of 3 billion 700 million kwh, discard rate fell by 4.5 percentage points.

Smart grid construction has entered a rapid development stage, the power grid enterprises to independent innovation as the driving force, a comprehensive breakthrough from power generation to the core technology of smart grid electricity in various technical fields, realize the change from the "follower" to "lead" in the international power grid technology in china. Up to now, the State Grid accumulated 427 million smart meters installed, built multi terminal flexible DC, unified power flow controller, national scenic storage and transportation, and other leading international smart grid demonstration project. Smart grid can be friendly and optimize the allocation of various energy sources, to achieve effective contact with large energy base and load center, so as to build a safe, efficient and clean modern energy security system, promote the transformation and upgrading of the clean energy structure, promote renewable energy to achieve greater and more efficient transmission configuration

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