What is the scene of 200 million household air conditioners starting together? It is equivalent to each Shanghainese buying 8 air conditioners and starting them at the same time.
Not long ago, on the big screen of the Control Center of the East China Branch of the State Grid Co., Ltd. (hereinafter referred to as the "State Grid East China Branch"), the figure of "318.99 million kilowatts (minute level)" jumped out, which is equivalent to 200 million air conditioners being started at the same time.
Of course, these electricity is not only used for air conditioning, but the total load of electricity consumption in four provinces and one city in East China such as Shanghai, Jiangsu, Zhejiang, Anhui and Fujian. The East China Branch of the State Grid in Shanghai is the "general dispatch of electricity consumption" in East China.
The East China Power Grid, which is composed of four provinces and one city, is the largest regional power grid in a single country in the world. The latest 300 million kilowattload not only broke the record for the fifth time in the year, but also increased by 30.8% over the first year of the 13th Five-Year Plan. Power operation is a barometer and thermometer of economic development, and behind the changes in electricity consumption data, there is a code for economic development.
In the past five years, the adjustment of the industrial structure has been accelerated
During the "13th Five-Year Plan" period, electricity consumption throughout East China was increasing, but the changes in electricity consumption in different industries were not consistent. Among them, Shanghai, as the core city of East China, has a representative change in electricity consumption in different industries and fields.
Statistics show that Shanghai's electricity consumption in 2016 was 148.602 billion kWh, and it is expected to increase to 156 billion kWh in 2020, an increase of 5%.
The 5% increase is not a big increase, which is the result of "two minus two increases":
Shanghai's primary industry electricity consumption was 747 million kWh in 2016 and expected to be 481 million kWh in 2020, a decrease of 35.6%;
Electricity consumption in the secondary industry was 81.266 billion kWh in 2016 and is expected to be 76.7 billion kWh in 2020, a decrease of 5.6%;
Electricity consumption in the tertiary industry is expected to increase from 44.817 billion kWh in 2016 to 58.5 billion kWh in 2020, an increase of 30.5%;
Residents' domestic electricity consumption is expected to increase from 21.772 billion kWh in 2016 to 26.3 billion kWh in 2020, an increase of 20.8%.
In the past five years, Shanghai's tertiary industry has accelerated its development, and under the influence of consumption upgrading, more styles and functions of household appliances have entered citizens' homes, promoting a significant increase in residents' daily electricity consumption. It can be seen that the 5% increase in electricity consumption reflects the accelerated adjustment of Shanghai's industrial structure and the daily improvement of residents' living standards.
In East China, different cities have slight deviations, but under the leading role of Shanghai, the primary, secondary and tertiary industries have shown an overall similar development trend. In the scope of four provinces and one city, the same tertiary industry electricity consumption growth is the most rapid, and it is expected that the annual electricity consumption this year will increase by 41.5% compared with five years ago. Across the Yangtze River Delta region, the higher growth in electricity consumption last year was in the construction industry, transportation and warehousing, information transmission, software and information technology service industries.
Smart power supply escorts life and production
Economic development, electricity first. Whether it is the tertiary industry represented by the information transmission, computer service, and software industry, or the secondary industry represented by advanced manufacturing, it puts forward higher requirements for the reliability of power supply.
The scale of the East China power grid is one of the largest in the world, and ensuring stable and reliable power supply is an important task for the power industry to ensure economic and social development. The east China power grid has grown not only the electricity load and electricity consumption, but also the power supply guarantee capacity that represents the Chinese level.
During the "13th Five-Year Plan" period, the East China Power Grid formed the overall structure of the main grid frame in East China with the "three crosses and seven straight" UHV backbone network as the core, realized cross-regional DIRECT current calls, and the efficient and safe transmission of surplus power from northern Anhui, northern Jiangsu and Fujian to the load center of Shanghai, Jiangsu and Zhejiang, reflecting the new level of China's power industry.
East China Power Grid also uses many of the world's most advanced power equipment and power grid technology management methods. In the dispatching hall of the East China Branch of the State Grid in Pudong South Road, Shanghai, there is a huge display screen that can monitor and display the power supply and consumption of the provinces and cities under the jurisdiction of the East China Power Grid and the operation of important transmission lines in real time. If a line fails due to weather, etc., the system will automatically switch to reduce the impact of the failure.
"We are also further optimizing the level of automation." Ding Haoyin, an engineer, said that East China is the first region in the country to pilot a frequency emergency coordination control system. After carefully analyzing the power supply and consumption situation in East China, the power engineers set up a "buffer zone" for power supply failures. Once there is a power supply failure, the electricity load of the "buffer zone" users or regions is reduced in a predetermined order to avoid the impact of automatic system switching on the remaining key power consumption areas or industries.
During the "13th Five-Year Plan" period, the frequency and voltage qualification rate of the East China power grid remained 100%, which not only escorted the daily life production, but also successfully completed the power conservation tasks of major events such as the G20 Hangzhou Summit and the Expo.
Clean energy adds greenery to industrial development
In the past five years, the four provinces and one city in East China have not only increased their electricity consumption, but also become more "green": as the main market for national clean energy consumption, East China Power Grid has actively implemented the national energy transformation strategy, and last year, the total amount of clean energy power generation in East China reached 285.6 billion kWh, and the clean energy calls outside the consumption zone reached 143.3 billion kWh, and "green electricity" accounted for 26% of the total power consumption of the entire network in East China. During the "13th Five-Year Plan" period, the utilization rate of wind power and photovoltaic in East China Power Grid reached 100%, becoming the only regional power grid in the State Grid Operation Area that has not abandoned wind and light.
Lu Jianyu has a nickname within the East China branch of the State Grid, called "Water Dragon King", because he is responsible for the consumption of clean energy such as hydropower. He said that although everyone knows that green energy is very important, it is not easy to make full use of it, "traditional energy sources such as thermal power come from power generation equipment, and power generation can be controlled by regulating equipment; but green energy mainly comes from nature, and the controllability is relatively weak." Electricity also has the characteristics of 'ready to use', and it is unlikely for a region to make a 'charging treasure' to store electricity. Therefore, improving the utilization of green energy is also a problem on a global scale. ”
However, during the "13th Five-Year Plan" period, in East China, especially in Shanghai, through the joint efforts of the government, enterprises and society, a set of effective green energy utilization mechanisms have been formed, which has greatly improved the utilization rate of green energy.
On the one hand, Shanghai has established the concept of collaborative utilization of green energy. Under the coordination of government departments, new energy enterprises and traditional thermal power generation enterprises cooperate tacitly. When the supply of foreign green energy increases, thermal power generation enterprises take the initiative to reduce power generation, so that the grid can supply more green energy. Maintain a balance between supply and demand.
On the other hand, Shanghai closely links the use of green energy with urban governance, including including its inclusion in the smog early warning coordination linkage mechanism. During the period of time when smog pollution may or has already occurred, Shanghai has taken measures to increase the supply of green energy and reduce the emissions of thermal power generation, which is conducive to improving the utilization rate of green energy and alleviating air pollution. This mature government-enterprise linkage scheme has been incorporated into Shanghai's local administrative regulations, creating a "national first" in the use of clean energy.
Column Editor-in-Chief: Liu Kun Text Editor: Ren Chong Caption Source: Figure Worm Image Editor: Cao Liyuan
Source: Author: Ren Chong