March 27, 2017 Source: People's Daily

       Since the beginning of the new century, a wave of energy revolution has sprung up around the world. The goal of this energy revolution is to realize the transition from high-carbon energy to low-carbon energy, and to solve the problems of environmental pollution and climate change faced by human beings while meeting the growing energy demand and ensuring energy supply. As a secondary energy sourced from primary energy, electricity has the characteristics of convenience and cleanliness, and has become the most widely used energy source. However, power production consumes a large amount of fossil energy and water resources, and emits a large amount of atmospheric pollutants such as dust, sulfur dioxide, and nitrogen oxides. Therefore, how to achieve power transformation and green development has become the key to today's energy revolution.

China is a major power producer and consumer in the world, and its power generation capacity and power generation rank first in the world. As a coal-based energy country, China's coal consumption in 2015 was 3.965 billion tons, accounting for 50% of the world's total coal consumption. Among them, 1.387 billion tons of coal for power generation accounted for 46.4% of China's total coal consumption. Over the years, China's power industry has promoted energy-saving and emission reduction of coal-fired power generation through technological upgrading, and achieved remarkable results. At the same time, China's new energy power generation has developed rapidly, and the installed capacity of grid-connected wind power and solar power generation ranked first in the world at the end of 2015. But we must also realize that achieving power transformation and development is a very difficult process. With the rise of the proportion of wind energy and solar power generation, there has been a problem that traditional power systems are not suitable for large-scale intermittent and volatility of new energy power access. New energy power is difficult to effectively absorb, and the risk of safe and stable operation of power systems is increased. . To solve these problems, we need to use system thinking to build a power system as a whole, and build a synergy mechanism between the power supply side, the grid transmission and distribution side, and the user's consumption side. We will take measures to eliminate technical and institutional obstacles and promote the transformation and upgrading of the power industry. .

Strengthen the research on grid-friendly power generation technology on the power supply side. The higher the proportion of new energy power, the greater the impact on the power system. Achieving power supply and demand balance and safe and stable operation requires the power supply side to improve the ability and flexibility to respond to grid dispatching. On the one hand, the development of grid-friendly new energy power generation technology to improve the smoothness and schedulability of power output. On the other hand, it takes advantage of the schedulability of traditional power sources, especially thermal power generation, to stabilize the volatility and intermittent nature of new energy power. For a long time to come, China will still be in the era of traditional fossil energy and new energy coexistence. The power structure based on coal-fired power will not change much. Coal-fired thermal power generation can further enhance the rapid and deep peak-shaving capability through flexible transformation to meet the needs of large-scale new energy power consumption. In addition, it is possible to increase the construction of pumped storage power stations, develop new large-capacity energy storage technologies, and plan to build a virtual power plant that uses regional multi-energy synergies to achieve synergistic use of new energy and traditional energy. Develop intelligent power generation technology to improve the intelligent operation control level of thermal power, hydropower, nuclear power and new energy power generation.

Strengthen the construction of power grid infrastructure on the transmission and distribution side of the power grid, optimize the power grid structure, and enhance the resource allocation capability. China's energy center and load center are obviously reversed. It is necessary to increase the construction of UHV transmission channels and improve the transmission capacity of the grid on the basis of coordinating the delivery and receiving needs, structure and capabilities. It is also necessary to further explore the flexible interconnection between large power grids, strengthen the inter-provincial power grid inter-provincial capacity in the region, improve the grid operation efficiency, and ensure the safe and stable operation of the power system and the reliable supply of power. At the same time, efforts will be made to promote equipment upgrading and technological innovation, comprehensively improve the intelligent level of power systems, achieve comprehensive deployment of energy production and consumption, improve the ability of the grid to accept and optimize the allocation of multiple energy sources; build an "Internet +" power operation model, and comprehensively promote intelligence The dispatch control system will carry out the construction of smart grid support smart city innovation demonstration zone.

       Efforts to achieve grid-friendly smart power consumption on the consumer side. There are a large number of adjustable loads (such as cooling, heating, etc.) and translatable loads (such as washing machines, disinfection cabinets, etc.) that can cooperate with the grid in the power system, and these resources have not yet been fully utilized. If this part of the translatable load is translated to the grid low, the power peak pressure and the safe operation risk of the grid can be greatly reduced, and more new energy power can be consumed. At the same time, we should continuously increase the proportion of electric energy in the terminal energy consumption, reduce the proportion of direct consumption of fossil energy (such as reducing loose coal combustion, fuel vehicles, etc.), and strive to form a green production capacity, green energy production, supply and consumption pattern.