"Electrical substitution" or solving haze

"The increasingly severe haze weather forces China's energy consumption structure to be adjusted." Yang Qing, deputy general manager of the State Grid Corporation of China disclosed in Beijing on November 8 that the State Grid Corporation of China is fully promoting the "electric energy substitution" technology and advocating "electricity The new concept of energy consumption for coal, electricity, oil, and electricity comes from a distance, and actively promotes the development of electric vehicles and rail transit, and raises the level of social electrification, and strives to achieve a total replacement electricity of 100 billion kwh by 2015.

Yang Qing made the above statement when attending the “Safety, Efficiency, Clean-2013 China Green Energy Summit Forum” hosted by Yingda Media Group. Officials and experts from departments and enterprises such as the SASAC, the Ministry of Science and Technology, the Ministry of Industry and Information Technology, the National Energy Administration and the State Grid Corporation of China pointed out in their speeches that resources and environmental constraints pose serious challenges to China’s energy consumption and promote “electric energy substitution” to “construction”. "Beautiful China" is of great significance.

Fog raging to force structural adjustment of energy consumption According to statistics from the Ministry of Environmental Protection, the number of haze days in some cities in China has reached more than 100 days, and individual cities even exceed 200 days. Prior to this, Xie Zhenhua, deputy director of the National Development and Reform Commission, who has long been engaged in environmental protection and resource conservation leadership, made no hesitation: “The hazy weather is almost normal, which has a great impact on the physical and mental health of the general public and has caused widespread concern at home and abroad.”

Analysing the causes of the haze, experts attending the “2013 China Green Energy Summit” held that this is a concentrated outbreak of long-term accumulation of structural energy consumption in the terminal.

According to Jiang Xinmin, deputy director of the Energy Economics and Strategic Development Research Center of the National Energy Development Research Institute of the National Development and Reform Commission, China's current end-use energy consumption of coal still occupies a large proportion, which has directly led to an increasingly serious environmental pollution in China.

“Data shows that in the urban PM2.5 composition of China, the proportion of coal-fired emissions is up to 50%-60%; there are also fuel-borne emissions from motor vehicles, accounting for about 20%.” Xu Ayuan, Deputy Director of the Marketing Department of the State Grid, delivered a keynote speech. China pointed out that with the acceleration of urbanization and industrialization in China, the demand for energy will continue to increase. Therefore, the proportion of coal and petroleum in terminal consumption must be reduced and the proportion of electricity consumption must be increased.

According to reports, the greenhouse gas emissions and environmental pollution caused by the consumption of fossil fuels such as coal and oil have received more and more attention from the world. In recent years, the proportion of fossil energy in the global end-use energy consumption structure has continued to decline, and the proportion of electricity has greatly increased.

“In China, the two major problems of coal accounting for terminal energy consumption are always high, and the reverse distribution of energy resources and productivity will coexist for a long time. Our energy consumption model is to transport coal from the west to the east-central load center over long distances, and part of it is used for firepower. Electricity generation is directly burned in cities for heating and industrial production,” said Xu Ayuan. “This not only increases the pressure on railways and roads, makes the contradictions between coal and electricity transport outstanding, increases the cost of social energy use, but also causes high costs due to scattered combustion. Large amounts of greenhouse gases and pollutants are emitted in densely populated areas in the eastern and central parts of the country, which worsens the local environment."

It is understood that China is deepening the industrialization and urbanization construction. In the long-term future, energy demand will remain rigid growth, and energy and resource consumption will continue to increase.

“At the same time, China’s energy consumption per unit of GDP is much higher than that of developed countries. The Chinese government has made a commitment to the international community to increase the proportion of non-fossil energy to 15% by 2020 and reduce the energy consumption per unit of GDP by 40. From 4 to 45%, the task of emission reduction is very arduous.” Xu Ayuan said: “In the future, China will enter the stage of compulsory emission reduction, considering the environmental sustainability and rigid demand growth, and the traditional energy allocation methods and local consumption patterns must be changed. ”

The State Grid Corporation of China has started a full-scale energy substitution to change how China's energy allocation approach and local consumption patterns are balanced. The answer given by the State Grid Corporation of China is "electric energy substitution."

"Each percent of China's energy consumption for terminal energy consumption increases by one percentage point, energy consumption per unit of GDP can drop by 4%." Yang Qing, deputy general manager of the State Grid Corporation of China, said in the speech delivered by the State Grid Corporation of China that "The State Grid Corporation has actively promoted this issue." The new concept of energy consumption from coal, electricity, oil, and electricity comes from afar, promotes the development of electric vehicles and rail transportation, promotes the development of electric vehicles and rail transit, raises the level of social electrification, guides society to actively select electric energy, and eliminates high pollution and low efficiency by promoting electric energy substitution technology. Energy use."

According to reports, the "State Grid Corporation of China Electric Power Alternatives", which was issued quietly in mid-August this year, clearly states that the company's operating areas will fully initiate the work of electric energy replacement and strive to achieve an accumulated 100 billion kilowatt hours of electricity replacement by 2015.

Xu Ayuan explained that the “electric energy substitution” program of the State Grid is in a nutshell three words: First, “power generation is based on electricity”, which is mainly used to convert coal from industrial boilers and residential heating cookers to electricity, reducing the central and eastern parts of the country. The total amount of direct coal-fired and pollution emissions in the region; the second is “substituting electricity for electricity”, mainly for the development of electric vehicles and rural electric power irrigation to reduce the dependence on petroleum; the third is “electricity comes from afar”, that is, the thermal power in the western and northern regions. Wind power, solar power generation and southwest hydropower are transported to the eastern and central regions on a large-scale, long-distance and high-efficiency basis, increasing the proportion of electric energy in terminal energy consumption, promoting the optimization of energy structure, and improving the ecological environment.

"The process of human history development is actually a process of energy substitution. From coal firewood instead of coal to oil and natural gas, it is gradually entering a new phase of replacing traditional fossil energy with new energy and renewable energy." Xu Ayuan said, "Whatever From the trend of development, practical requirements, or analysis of technical conditions, the substitution of electric energy is an important trend for the substitution of terminal energy. To promote the replacement of terminal energy by electrification and electric energy substitution is in line with China’s basic national conditions.”

Xu Ayuan believes that first, the implementation of electrical energy replacement is an important measure to ensure national energy security and is an inevitable choice to ensure the safe and reliable supply of energy in China.

Second, the implementation of electrical energy replacement is an effective measure to control urban haze. Electric energy as a secondary energy source does not produce pollution emissions in the terminal applications. Although thermal power generation still needs to burn coal and discharge pollutants in the production process, it adopts various technical measures to focus on large-scale processing, pollutant emission intensity and treatment cost. Both are much lower than traditional dispersion combustion methods.

Third, the comparative advantage of electrical energy is the basis for supporting electrical energy substitution. As the relationship between energy prices gradually becomes more reasonable, the prices of oil and natural gas will continue to rise, and the competitiveness of electric energy in the terminal energy consumption market will further increase, which will make electric energy substitution projects have more significant economic benefits.

Building a safe, efficient and clean modern energy system In an interview, the reporter learned that the State Grid Corporation's power replacement work will mainly be promoted in three areas. The first is to implement large-scale heat pumps, electric heating, electric boilers, dual storage, etc. in the key areas of urban central heating, industry and commerce, etc. to replace electricity with coal (gas) projects. In the municipalities directly under the Central Government, provincial capital cities, cities under separate planning, and major pollution-stricken cities that the Ministry of Environmental Protection focuses on, priority is given to the implementation of a demonstration project of “electrical heating alternatives to coal-fired boilers” with “excellent demonstration, good economic returns, and good promotion results”. In conjunction with the country's comprehensive pilot project for the development of electricity demand side management cities, the project will focus on the promotion of cold storage (heat) projects in pilot cities and commercial buildings, and the demonstration of large-scale centralized cooling (heat) stations.

The second is to actively promote and serve the development of electric vehicles and rail transit in the transportation sector. Closely follow the development trend of the electric vehicle industry and the market, speed up the construction and operation of the charging and replacement facilities. Combining electric railways and local urban rail construction plans, we will actively build supporting power supply and power supply service facilities, actively promote electrification in the transportation sector, and enhance the quality of urban development.

The third is to actively promote "home electrification" in the area of ​​residents' lives. Promote "coal (gas) power conversion" in suburban suburban areas and rural areas, change coal-fired heating into electric heating, promote the use of electric heating and household appliances in new residential buildings, advocate "zero emission" family life, and give full play to the company's marketing network. Advantages, promote the popularization of household appliances, and promote the growth of household electricity consumption. In addition, the State Grid Corporation of China will actively strive for the government to introduce support policies that encourage energy-saving alternatives, guide society to actively select electric energy, and eliminate high-pollution, inefficient energy use methods.

“The electric grid, as a basic carrier for power transmission, resource allocation, market trading, and customer service, cannot play a role in ensuring energy security, high efficiency, and clean development.” Yang Qing said that the State Grid “substituting coal for electricity and electricity for electricity The electric energy substitution strategy based on electricity and electricity from a distance is of great significance for building a modern energy security system that aims at safety, efficiency, and clean development, and promoting the construction of ecological civilization.