The development of power grids as an important trend in global energy development

Since the new century, electrical energy has become an important trend in energy development. Electrical energy is a high quality, efficient, clean secondary energy source. For every one percentage point increase in the proportion of China's energy consumption in terminal energy consumption, energy consumption per unit of GDP can fall by 4%. The economic value of electricity generated by one tonne of standard coal equivalent is 3 times and 17 times the equivalent of oil and coal, respectively. In the past 20 years, the share of China's energy consumption in terminal energy consumption has increased from 9.1% to 22%. In the same period, the share of global energy in terminal energy consumption has also increased from 13.2% to 19%. Since 2000, the world’s primary energy has been transformed into electricity. The proportion from 35% to 40% is expected to exceed 50% by 2030. At that time, the global installed capacity and power consumption will reach 8.2 billion kW and 34 trillion kWh, respectively, which is an increase of more than 60% from 2012.

Since the beginning of this century, the world's power grids have entered the stage of a strong smart grid. The strong smart grid is based on modern network industries, control technologies, and information technologies. It will be characterized by intelligence, informatization, and interaction. It will have the ability to configure power across and across continents. A modern power grid system that flexibly adapts to new energy development and diversified demand services. Strong smart grid is a powerful platform for energy conversion, efficient configuration, and interactive service. It is a modern grid tightly integrated with strong grid and intelligent control, and it is intelligent for all aspects of power generation, transmission, substation, power distribution, electricity use, and dispatch. Power Systems. In short, the development of a strong smart grid has enormous economic value, social value, and environmental protection value. It is a strategic choice for achieving sustainable energy development and will provide safer, more efficient, and cleaner power protection for economic and social development.

Based on the important role of power grids, countries in the world have adopted grid development as a strategic focus of energy development in recent years. As a major measure to address climate change and ensure energy security, development plans, construction goals and action lines have been formulated to further increase investment and accelerate Transformation and upgrading, showing a trend of rapid development. Since the State Grid Corporation of China proposed to develop a strong smart grid in May 2009, it has done a lot of work in development planning, technology research and development, and engineering applications, and has made important progress.

In recent years, many countries in the world have carried out a lot of work in the development of smart grids, and have made many breakthroughs and important progress. Countries such as India, Brazil, and South Africa are actively promoting the construction of UHV AC and DC projects; the United States, the European Union, and Japan have achieved improvements in power grid upgrading, new energy development, distributed generation, electric vehicles, energy storage devices, and interactive services. New breakthrough. Although different countries have different technical routes, priorities, and specific measures, the overall goals and directions are the same. There is a Chinese proverb saying: “The people have high firewood.” Looking forward, the State Grid Corporation of China is willing to work with all of you to strengthen exchanges in basic research, scientific and technological research, equipment development, engineering construction, standard setting, and personnel training. And cooperation to jointly promote the development of a strong smart grid innovation.

Just as we could not predict the rapid development of the power grid and the rapid development of our electric power industry more than 40 years ago, we are looking forward to the development of a strong smart grid in the future. Let us uphold the tenet of openness, innovation, cooperation, and win-win cooperation, pool consensus, advance hand in hand, and open up and innovate to jointly promote the transformation, upgrading, and rapid development of the power grid. With our wisdom and strength, we can do sustainable economic, social, and environmental development. Make a positive contribution.

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