The hottest smart grid is not just about grid comp

2022-08-17
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Smart electricity is not just about power companies.

China has officially launched the "three-step" strategic development plan for smart electricity, but since it was formally proposed, it has not been unified. Zhangguobao, deputy director of the national development and Reform Commission and director of the national energy administration, said on June 1, "the energy administration is studying the problem of smart electricity, but there are different opinions. For the planning of smart electricity, it should be said that it is still under study and there is no unified plan."

according to the national energy work conference, the total investment in national power in 2009 will reach 580billion yuan, and the investment in electricity is estimated to reach 400billion yuan. The investment focuses on ultra-high voltage, ultra-high voltage and cross regional power transmission projects. The annual investment in the future will exceed 1trillion yuan

intelligent electricity expert Wu Jiandong wrote in the morning post, "China's electricity investment is second to none in the world, but such an investment plan is not compatible with the upgrading mission of intelligent electricity."

for this sufficiently cutting-edge and strategically advanced "smart electricity", it is conceivable that it will still take years to fully establish, during which there will inevitably be some breakthroughs in understanding

"the core of smart electricity is to promote the utilization of new energy." Li Ruiqing, director of the strategic research and Legal Affairs Department of East China Power Co., Ltd., told the morning post that smart electricity is the competition of the world's new industrial revolution. To be more open, it is not just a matter dominated by power companies. There are also great opportunities in other industries, including telecommunications, and the opportunities are just beginning

"the transformation of intelligent interactive electricity should become the primary goal of China's power development. This will be a larger industrial space than 3G business, and a strategic opportunity that can promote the transformation of domestic demand system more than 3G business. If the transformation of national interactive electricity is launched in 2009, it is likely to drive the national economy to grow by about 1% every year." Intelligent power expert Wu Jiandong has described the strategic miracle and grand blueprint of intelligent power development for several times

"distributed" vs "ultra-high voltage"

in February this year, US President Barack Obama proposed to invest a total of US $11billion to build a new generation of smart electricity that can install various control devices

according to Wu Jiandong's summary, "the basis of smart power reform in the United States and Europe is to base on one (power) line (power line), and build interconnected data on this basis, so as to realize real-time, high-speed, two-way power data reading and renewable energy access."

a more concise summary is that the development ideas of Europe and the United States follow the "clean, efficient and distributed as the core", while the corresponding China takes "UHV as the core". According to Shuai Junqing, chairman of Huadong Electric Co., Ltd., which has high scratch resistance and high design freedom and excellent surface quality, told the morning post, "this is not contradictory, and there is no difference between good and bad."

"this is a problem of adjusting measures to local conditions. Most of China's new energy is distributed in the western region, which is sparsely populated and difficult to use locally. How can it be transmitted after power generation? This must be transmitted by powerful ultra-high voltage electricity", Li Ruiqing told the morning post. "I also mentioned that the development of smart electricity is to promote the development of new energy, such as the access of wind and solar energy needs to be 'balanced and hedged'."

Li Ruiqing introduced that, for example, East China power is the largest regional power in the country, with a maximum load of 130million kW. It is difficult to control the normal power frequency quality when the traditional power is connected to 3% of the wind power. According to this calculation, it can only support the wind power fluctuation of 3.5 million KW. If there is 4million kW, there will be problems. In recent years, 10million kilowatts of wind power will be connected in Jiangsu and nearly one million kilowatts in Shanghai. This is a big practical problem

the "balance and hedging" referred to here is actually because most of the new energy power generation has no continuous stability and is intermittent. If the unstable power supply is connected to the traditional electricity, the electricity will not be able to directly withstand the sudden "peak" or "trough" at a certain time. This is also an important reason why traditional electricity cannot satisfactorily solve the problems of new energy

China's resource distribution and power load are facing a huge contrast. It has rich energy resources in the northwest and other places, but it is difficult to export due to bottlenecks such as transportation. In addition, power load centers in East China and other places frequently encounter power shortages, resulting in a severe test of overall tension in coal, electricity and oil transportation for a certain period of time

Jiang Qian, a new energy analyst at CIC, told the morning post that China's current economic development stage is still at the beginning of industry, and energy demand is still mainly concentrated in the secondary industry, which is not concentrated on individual users as in the United States and Europe. Based on UHV, it is not only based on the original basis of China's power development, but also in line with China's industry as the main demand stage

"electricity" vs "telecommunications"

in terms of the specific development plan of smart electricity that has not been completely clear in China at present, the eyes of all walks of life have turned to the two major power companies of national power and southern power. Power companies are considered to be the main body responsible for the development of smart electricity in the future

"our view of interaction is actually open. Is this the key direction of smart electricity investment in the future? Smart electricity is not necessarily a matter of electricity companies, but a process of mutual promotion and coordinated development of new energy, new customers and new electricity. It is not only smart electricity when the socket is connected to the Internet. It should be said that whoever does it most economically has advantages. There is a relationship of competition and complementarity." Li Ruiqing told the morning post

this statement is quite surprising. Li Ruiqing told the morning post that wherever there are communication networks, there are conditions for information interaction, such as the use of wireless 3G networks

according to Wu Jiandong's interpretation of smart electricity, we should learn from the experience of Europe and the United States to build a slightly different "power optical fiber composite cable electricity" in China. On the basis of this optical fiber electricity, it is possible to spread "broadband" information. In addition, "according to the degree of openness of the policy, electricity will gradually open broadband, television box communication and other services in the future."

in fact, according to the most ideal state, the current electricity, telecommunications and cable TV should be three in one to achieve a comprehensive merger. "At that time, as long as the terminal is equipped with enough sockets and batteries, different users can charge or even discharge their electric vehicles, air conditioners and other equipment at any time according to their preferences." This is not only the most economical cost, but also can achieve real "interconnection". However, this ideal state is almost impossible

"if there is competition between electricity and telecommunications in the application of final network information functions, in fact, I think we should also recognize that there are great complementarities between them", Li Ruiqing told the morning post. For example, the western region is vast and sparsely populated, so the transmission with wireless network is certainly economical, and the telecommunication network has great cost and convenience advantages. However, in a densely populated megalopolis such as Shanghai, laying wires with composite communication functions will be more economical and efficient than building wireless networks

"now" vs "future"

"if we look further, in years, our energy will be provided by controllable nuclear fusion power stations, not the current nuclear fission substation. This is the consensus at the forefront of the world's energy strategy." Li Ruiqing expressed his outlook on the future direction of human utilization of new energy to the morning post

"the core of smart electricity is to promote the use of new energy, use wind power, solar energy and other new energy on a large scale, and achieve energy conservation and emission reduction on a large scale." Li Ruiqing stressed to the morning post that what needs to be solved in recent decades is the development of new energy in the form of electricity

for the current development of smart electricity in the United States, the first is to launch its new energy strategy, including supporting solar energy, hybrid electric vehicles, pure electric vehicles, and fuel cell vehicles; In addition, distributed energy management is implemented for individual users to realize the "Upload" and "download" of energy. At present, smart power projects include laying or upgrading 3000 miles of transmission lines and installing smart meters for 40million American households

it is necessary to choose a smaller barrel capacity of the injection molding machine as far as possible. As relevant experts in the United States point out, as the power distribution system enters the computer age, modern digital electricity will reduce energy consumption in the United States by 10%, greenhouse gas emissions by 25%, and save $80billion in the cost of new power plants. According to the research results of the Northwest Pacific National Laboratory of the U.S. Department of energy (17.55, -0.02, -0.11%), using only digital meters to set home temperature and integrate price information can reduce energy consumption by 15% per year

the industry predicts that China's total installed capacity of new energy will exceed 1.6 billion kw in 2020. The distribution of energy resources such as coal, water and wind and productivity is very unbalanced, which determines that China has the characteristics of large-scale centralized development and long-distance power transmission, which urgently needs to build strong smart power

for the future smart electricity, Wu Jiandong proposed a bold "intercontinental energy interaction network plan", whose framework is to realize the interactive transformation of China's power system based on a global power interaction upgrade standard. At the same time, the standard of this system is inclusive of intercontinental interactive power construction, which can integrate the power generation, transmission, power supply The power industry that uses electricity and relevant energy industries are interconnected and integrated to realize the power and energy exchange between China and surrounding countries

Li Ruiqing told the morning post that the research on smart electricity is just the beginning. It will be a long-term and influential industrial revolution, and there must be more innovation and development in the future

view of international energy giants

power and automation group abb:

smart electricity has different priorities in various countries

smart electricity is not a change, but a process in which the existing power system gradually becomes more intelligent, efficient and environmentally friendly, and better meets the future needs of mankind

the power demand and development level of different countries are different, so the requirements and priorities of building smart electricity are also different. Smart electricity is an inevitable choice for human beings to face the challenges of power supply and demand balance, new energy access, power reliability and information security. It represents a vision of the future evolution of electricity: combined with advanced automation technology, information technology and controllable power equipment, it supports the optimal management of the entire power supply link from power generation to power consumption, especially the new adhesive, the access of energy sources and the safe operation of electricity at the end of the service life of various vehicle materials

energy business department of Siemens Group: smart electricity is the trend of power transmission and distribution.

smart electricity represents one of the most important market and technical trends in the power transmission and distribution industry

existing electricity needs to meet new challenges in the future. Siemens' vision for smart electricity is to create a power supply network under a new concept and management. The past static research results include more than 50 tables and 16 charts and diagrams. The state power operation mode will be transformed into a "dynamic" structure to realize flexible, transparent and fast communication between power producers and consumers. The key driving force of intelligent electrolysis solution lies in the integration of decentralized power resources (such as renewable energy power generation); The establishment of electricity market and the strengthening of electricity trading; And reduce power operation costs by optimizing the use of existing capacity and resources; Provide transparent energy use information for power consumers

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