The geographical distribution of primary energy resources in China is very uneven, and even more inconsistent with the development of various regions in the country. The electricity in most economically developed regions needs to be sent to coal mines from long distances, the supply of coal power plants is nearby, or power transmission from outside regions is required. There has been a question of what is better for coal transmission and transmission.

First, a high-level study of coal transmission and transmission problems Some comrades, when comparing the gains and losses of coal transmission, often place emphasis on making economic comparisons. Of course, economic comparison is very important. Regardless of whether or not the conclusions of economic comparisons are quite different from each other, I think that when studying coal transmission and transmission, we must not only consider economic issues, but should consider national conditions and consider various constraints.

Second, the transmission of coal and electricity complement each other There are many choices in the world is the "zero-sum" nature of "either or that", such as dam site selection when building a hydropower station is an example. However, more than the selected parties may be a kind of main and auxiliary relationship, or even both play a complementary role. For example, in the development of electric power in China, there was a "controversy between water and fire." In fact, there is no fundamental contradiction between the development of hydropower and the development of thermal power, and each has its own advantages and disadvantages, each has its own characteristics and complement each other and complement each other.

For quite a long time, China’s primary energy sources are mainly coal, and coal power also accounts for the largest part of the power supply structure. In the power grids of economically developed regions, sufficient local power is also needed. As long as the above conditions do not change fundamentally, the phenomenon of coal transmission will exist for a long time, and it is an important part of the national energy transmission. There should be no objection. However, we must also see the corresponding severe consequences, various constraints and development trends of clean power. Therefore, it is not only feasible but also necessary to vigorously develop long-distance transmission technologies to alleviate contradictions. Transmission and transmission of coal are complementary and there is no problem of competition.

Furthermore, the expression of the Fifth Plenary Session of the 17th CPC Central Committee in “Strengthening the Construction of Modern Energy Industry and Comprehensive Transportation System” deserves our in-depth understanding. In fact, science and technology and economic development till now, the power grid is no longer a simple power supply tool, but an integral part of the integrated transportation system. It is a new mode of transportation other than railways, highways, waterways, aviation, and pipelines. It also has information. Automation, automation and very flexible features. It is our goal to coordinate and make full use of the functions of various transport systems to achieve the optimal combination of overall transport efficiency and create the greatest comprehensive benefits.

Thirdly, the tense situation of coal transportation will exist for a long time, and efforts will need to be made to ease the transportation capacity and technological level of China’s railways and highways. In recent years, there has been rapid growth and improvement. Now it has taken a leading position in the world and has played a role in supporting the development of the country and satisfying people’s needs. A decisive role. The pressure and tension of railways and road transport will persist for a long time, and the transportation of coal is undoubtedly the biggest pressure among them.

Some of the coal transported by railways and highways is raw materials such as chemical industry and ironmaking, but it cannot be replaced. However, more than half of them are "electric coal." If it is possible to develop long-distance transmission technologies and ease the pressure of some coal shipments, it is beneficial to both the country and the people. .

IV. The environmental capacity of developed regions is not allowed to be built without restrictions. Coal-fired power plants, even if they have sufficient coal-carrying capacity, cannot restrict the development of conventional coal-fired power plants in economically developed areas due to environmental capacity constraints. One way out is to build power stations in coal-producing areas (or in suitable areas nearby) to form large energy bases and meet local needs through transmission.

Of course, the environmental capacity of coal-producing regions is also limited. Therefore, when building coal-fired power plants, environmental protection issues must be given special emphasis. However, compared with economically developed regions, there is more room for maneuver. To solve this problem, we must ultimately rely on the clean utilization of coal, carbon capture technology, and large-scale development of alternative energy sources. However, in the short term, it will not be possible. In recent decades, it has been a critical period for China’s economic upswing. We need to look far ahead and also need to consider the recent reality.

5. The utilization of energy resources such as large hydropower and wind power relies on the rapid development of electricity transmission and the priority in the development of clean and renewable energy. This is a basic national policy and imperative. In the future, China’s hydropower, wind power, and photovoltaics will develop vigorously, and its speed will be crowned global.

China's hydropower is concentrated in the southwest, especially in the three provinces of Sichuan, Yunnan, and Tibet. The large-scale utilization of these hydropower can only rely on transmission, and there is no comparison between transmission and transmission.

Another important energy source is wind energy. Most of the world’s wind energy development uses small-capacity and scattered use, while China’s wind energy resources are concentrated in Xinjiang, Qinghai, Gansu, and Inner Mongolia, and will use centralized large-scale development (the so-called “Wind Power Three Gorges”). Unreliable electrical energy in remote areas is reliably transported and utilized, and coal-fired electricity and water supply must be bundled and delivered. All these require the development of long-distance transmission and the development of a powerful smart grid to solve problems. The scale of solar photovoltaic power generation is currently relatively small, but experts have proposed to cooperate with hydropower in Qinghai and build photovoltaic bases of tens of thousands of kilowatts, even if they want to enter the billion kilowatts range, and their full use will of course depend on the construction of high-voltage power transmission grids.

VI. Fully Understand the Essential Differences in Coal Transmission and Transmission On the surface, coal transmission and transmission are the transmission of energy. In fact, there are essential differences between the two. The power transmission is pure energy, and it is clean, high-quality, and flexible. The coal conveyed is raw coal, which contains less than half of the carbon, and the rest are limestone and impurities. In China, hundreds of millions of tons of limestone and impurities are transported thousands of kilometers each year, which not only causes huge environmental pollution but also is a huge waste.

The occupancy of both lands is different. After the construction of the railway, a considerable area along the road became a restricted area.

Not free to enter, let alone develop and use. After the completion of the transmission line, land acquisition and management are also required along the line, but the real land is a small piece of Takina, which is only an average of several hundred meters to one kilometer, and the rest of the land is still available. It is particularly in short supply of land resources. In our country, this is not a negligible thing.

VII. Emphasis on the development of the resource output area The development of China's major coal-producing regions is relatively backward and coal has become a major resource. Output of raw coal is the most primitive source of mineral resources. The local people complained that it is reasonable to “cut out coal mines, pollute the environment, and pile up with garbage, leaving behind poverty”. Build electric power bases in coal-producing areas, change coal transportation for transmission, increase taxation, and leave part of the electric power in the local area, vigorously support its economic development and revitalization, and coordinate development with the country. This is an irresponsible responsibility of the country.

VIII. Understanding problems with a vision of development Since the 20th century, human science and technology have been developing and developing in a spurt manner. A large number of new theories, new technologies, new equipment, and new processes have emerged. Therefore, we must treat problems with the eyes of development. We should not stick to conventions but should keep pace with the times. Indeed, in the conventional wisdom, the higher the grid voltage, the larger the scale, and once a line goes wrong, it may cause the collapse of the entire grid. In fact, the power sector has always been cautious about this major issue. It has carried out countless trials and tests and adopted a multi-level protection system to ensure safety. Please allow me to quote Academician Lu Qiang's remarks on the security and stability of the “Sanhua System”: “We have conducted simulation tests for five or six hundred situations. The answer is: The safety and stability of such a power grid is guaranteed. This is not just to say that there is a series of innovative scientific and technological achievements to guarantee. "It should be believed that on the basis of strict scientific experiments, relying on advanced equipment and control measures can safely implement ultra-high voltage remote transmission. The problem of water shortage in coal-producing areas can also be solved by optimizing the site, using unconventional water sources, appropriately externally regulating water sources, recycling, and adopting high-efficiency water-saving measures.

Conclusion The problem of coal transmission and transmission should be comprehensively studied according to national conditions at a high level. The power grid is an integral part of the comprehensive transportation system. The transmission and transmission of electricity is not a zero-sum relationship but complement each other. The tightness of coal transportation in China will exist for a long time and needs to be developed. Long-distance power transmission helps ease, and the environmental capacity in developed regions does not allow unrestricted construction of coal-fired power plants. The utilization of large hydropower, large wind power and other energy sources depends on long-distance transmission. It is necessary to build a coal-fired electric power base to support the development of resource-exporting regions. Therefore, the country should make overall plans for coordination, adjust measures to local conditions, use high-tech technologies, and transmit coal and electricity at the same time, so that the country's transportation system can be optimized globally and contribute to the country’s economic development, environmental protection, and technological advancement.