Views: 4 Author: Site Editor Publish Time: 2020-09-25 Origin: Site
Recently, the National Bureau of Statistics released data that China’s power generation in August 2020 reached 723.8 billion kWh, with an average daily power generation of 23.35 billion kWh, reaching the highest value in history and continuing to lead the world. As the country with the most power generation in the world, as early as 2018, China ranked first in the world with 711.8 billion kWh, accounting for more than a quarter of the world's total power generation (26 trillion kWh). At the same time, China is the world's largest electric vehicle market, and the rapid development of the energy sector has provided sufficient energy guarantee for the full electrification of vehicles.
Private electric cars use 7 kWh of electricity per day, which is only equivalent to a 5P air conditioner
Many people believe that after the large-scale promotion of electric vehicles in cities, there may be a problem of insufficient power supply. In fact, this is a misunderstanding of perception. The daily electricity consumption of private electric vehicles is actually very low. Private cars travel between 12,000 and 15,000 kilometers a year, with an average mileage of about 40 kilometers per day. In the market, the power consumption of an electric car is basically 15 to 17 degrees per hundred kilometers. Calculated based on driving 40 kilometers per day, the average daily power consumption of an electric vehicle is about 7 degrees, which is only equivalent to the power consumption of a 5P air conditioner operating for 1 to 2 hours.
In the future, if private cars across the country are fully electrified, what will happen to electricity consumption? According to data from the Ministry of Public Security, in 2019, the number of private cars in the country was approximately 207 million. A private electric car uses an average of 7 kilowatt-hours of electricity per day. After 207 million private cars are fully electrified, the daily electricity consumption is about 1.449 billion kilowatt-hours. According to data released by the National Electric Power Dispatching Center, the country's daily power generation in 2019 was up to 23.535 billion kWh, and the country's private car power consumption was only 6.16% of the country's daily power generation. In 2019, the total electricity consumption of the whole society in my country was 7,225.5 billion kWh. After 207 million private cars were fully electrified, the annual electricity consumption was about 520 billion kWh, accounting for only 7.22% of the national annual electricity consumption.
Valley power is rich in resources, and the existing electricity fully meets the needs of vehicle electrification
In economic and social life, the electricity demand during the day is the largest, and the electricity demand at night is the least. In order to ensure the electricity demand of all walks of life during the day, all generator sets must generate electricity according to the peak electricity demand during the day, but at night, the electricity generation cannot be greatly reduced due to the low electricity consumption. Every electric vehicle is a small mobile energy storage power station, which uses the valley electricity at night and night to charge, which has the effect of \"shaving peaks and filling valleys\" on the power grid, improving electricity efficiency and regulating electricity load. Save power resources. If all valley electricity from night to night is used, the existing electricity of my country's power grid can fully meet the needs of fully electrified vehicles.
As early as April 2017, Wang Binggang, leader of the National New Energy Vehicle Innovation Project Expert Group, pointed out in \"Discussion on Several Issues of New Energy Vehicle Development\" that when the number of electric vehicles in my country reaches 200 million , Its annual electricity consumption accounted for about 6% of the electricity consumption of the whole society at that time. Since most electric vehicles will be charged at night, they can be charged with the low electricity of the grid. The current known peak-to-valley difference is 20% to 30%. If a large number of electric vehicles can be charged during the valley period at night, not only will it not increase the burden on the grid, but it can help the grid to store electricity.
Charging and capacity expansion is like pulling a phone line, which requires investment in the early stage, and then free delivery
The construction of charging facilities is the key development direction of the country's new infrastructure. In April 2020, the National Development and Reform Commission announced that it will complete an investment of about 10 billion yuan in 2020, adding about 200,000 public piles, more than 400,000 private piles and 48,000 public charging stations. As of August 2020, the cumulative number of charging infrastructure across the country is 1.382 million, and a good charging network has gradually formed. Of course, in the process of promoting electric vehicles, although many charging outlets in cities can use ready-made transformers, and the electric load can meet the charging needs of electric vehicles, there is indeed a problem of insufficient load of transformers in some charging planning outlets, and electricity is required. Increase capacity.
In fact, charging capacity increase is not a problem that plagues the development of electric vehicles. The development of telephones and cable television is a good example. For example, at the beginning of the rise of telephones, additional lines and capacity-increasing equipment were also needed. In the early days, higher fees were required to pull telephone lines. However, with the popularization of telephones, the density of the communication line network in the city became higher and higher. Later, families not only did not need to pay extra for pulling the telephone line, but also could receive the telephone for free. The same is true for the development of electric vehicles. In the early development process, there was a problem of insufficient charging network density and the need to increase the capacity of some of the network points. In the early stage, a certain scale of investment was indeed required, but when the urban charging network developed to a certain scale, the charging facilities The marginal cost of investment will be lower and lower, but the operating income will be higher and higher, and the entire industry chain will benefit from it.
In recent years, my country’s electric power development has advanced by leaps and bounds, and its power generation has been ranked first in the world. It has provided a large number of affordable, high-quality, and reliable power resources for economic development and social progress. Large-scale popularization and higher-quality development provide a solid guarantee.
