The “Twelfth Five-Year Plan†of the power industry is ready and is expected to be included in the national special plan. Regarding the transformation of power development methods, Liu Zhenya pointed out that the fundamental measure is to accelerate the construction of a strong smart grid with UHV power grids as the backbone grid, and promote the intensive development of large hydropower, large coal power, large nuclear power, and large-scale renewable energy power generation bases. , To achieve a greater range of optimal allocation of energy resources.
For the construction of the electric highway, some of the well-known experts were in favor of some opposition. Just as before the Three Gorges Project was launched, opinions were not uniform, but they were all controversial about the economy and feasibility. The use of DC UHV also used AC UHV. The program debates, no matter what, are all hopes to get this thing done. However, the necessity for the construction of a UHV power grid called a power highway does not require controversy.
The construction sites of hydropower stations, nuclear power stations and renewable energy bases such as wind farms and photovoltaic farms within the scope of national policy encouragement need to be adapted to local conditions and cannot be moved freely; due to economic, resource, and other constraints, it is impossible to digest and use these energy sources. It is close to the solution, not to mention the fact that hydroelectric power generation receives the influence of upstream water, wind power generation, and solar power generation are affected by the weather. The power generation load cannot be kept stable, and it must be linked to the power grid in order to make mutual benefits with other power supplies. The transportation of these energy sources cannot be resolved by railways and road transport, and they can only rely on power grid transmission. In order to develop such renewable energy resources to a greater extent, it is necessary to build ultra-high voltage power grids with high power transmission capabilities.
In addition, the power resources and demand in various regions of China are difficult to balance due to factors such as economy and climate. It is difficult to achieve real-time balance between electricity demand and power generation capacity between regions, and it is necessary to achieve power generation by scheduling the start and stop of power generation equipment. The real-time balance between output and power load leads to a reduction in the utilization efficiency and power generation efficiency of the power generation equipment. With the ultra-high voltage liaison power grid with a relatively strong transmission capability between the power grids, power can be complemented between each regional power grid. The power generation capacity and the electricity load among the regional power grids are closer to the overall balance, which improves the utilization efficiency of power generation equipment and saves the investment in the construction of power plants.
Some experts worry that the development of ultra-high voltage power grids and the realization of nationwide networking will lead grid companies to strengthen monopolies and impede power reforms. This is not necessary. After the backbone of the UHV power grid is built, the power generation companies in each region will stand on a platform, which is more conducive to the realization of electricity reform for each power plant bidding online, increase the power generation efficiency of the power plant, reduce the on-grid tariff, and provide public benefits. The grid companies have already been regarded as public welfare state enterprises by the National Development and Reform Commission, and will surely be subject to more powerful supervision by the national government departments. Not to mention that the power of reform decision is also in the hands of the government, and the power reforms that can be separated through the next transmission and distribution can be fully implemented. Realize the efficiency and fairness of power grid companies.
Whether the UHV power grid can replace the coal transportation function of railways and roads, as long as the scientific and reasonable transmission prices are clarified, and through the economic analysis of the costs of investment, land occupation, transportation capacity, and loss of railways, highways and transmission lines, Comparison can be determined by market competition. At the level of technological maturity, whether DC UHV or AC UHV is adopted, because the investment, power transmission capacity, transmission distance, and stability of the power grid system are different, and they can also be based on the principles of soundness, economy, and reliability. Based on local conditions, make comparison choices.
Build ultra high voltage power grids, improve the power transmission capacity of the power grid, and realize the mutual complementarity of electricity among major regional power grids. It is necessary for the development of renewable energy such as hydropower and wind power, photovoltaics, etc., to optimize industrial layout, save energy and reduce emissions, and promote social economy. The sustainable and healthy development is very necessary and should be accelerated.
For the construction of the electric highway, some of the well-known experts were in favor of some opposition. Just as before the Three Gorges Project was launched, opinions were not uniform, but they were all controversial about the economy and feasibility. The use of DC UHV also used AC UHV. The program debates, no matter what, are all hopes to get this thing done. However, the necessity for the construction of a UHV power grid called a power highway does not require controversy.
The construction sites of hydropower stations, nuclear power stations and renewable energy bases such as wind farms and photovoltaic farms within the scope of national policy encouragement need to be adapted to local conditions and cannot be moved freely; due to economic, resource, and other constraints, it is impossible to digest and use these energy sources. It is close to the solution, not to mention the fact that hydroelectric power generation receives the influence of upstream water, wind power generation, and solar power generation are affected by the weather. The power generation load cannot be kept stable, and it must be linked to the power grid in order to make mutual benefits with other power supplies. The transportation of these energy sources cannot be resolved by railways and road transport, and they can only rely on power grid transmission. In order to develop such renewable energy resources to a greater extent, it is necessary to build ultra-high voltage power grids with high power transmission capabilities.
In addition, the power resources and demand in various regions of China are difficult to balance due to factors such as economy and climate. It is difficult to achieve real-time balance between electricity demand and power generation capacity between regions, and it is necessary to achieve power generation by scheduling the start and stop of power generation equipment. The real-time balance between output and power load leads to a reduction in the utilization efficiency and power generation efficiency of the power generation equipment. With the ultra-high voltage liaison power grid with a relatively strong transmission capability between the power grids, power can be complemented between each regional power grid. The power generation capacity and the electricity load among the regional power grids are closer to the overall balance, which improves the utilization efficiency of power generation equipment and saves the investment in the construction of power plants.
Some experts worry that the development of ultra-high voltage power grids and the realization of nationwide networking will lead grid companies to strengthen monopolies and impede power reforms. This is not necessary. After the backbone of the UHV power grid is built, the power generation companies in each region will stand on a platform, which is more conducive to the realization of electricity reform for each power plant bidding online, increase the power generation efficiency of the power plant, reduce the on-grid tariff, and provide public benefits. The grid companies have already been regarded as public welfare state enterprises by the National Development and Reform Commission, and will surely be subject to more powerful supervision by the national government departments. Not to mention that the power of reform decision is also in the hands of the government, and the power reforms that can be separated through the next transmission and distribution can be fully implemented. Realize the efficiency and fairness of power grid companies.
Whether the UHV power grid can replace the coal transportation function of railways and roads, as long as the scientific and reasonable transmission prices are clarified, and through the economic analysis of the costs of investment, land occupation, transportation capacity, and loss of railways, highways and transmission lines, Comparison can be determined by market competition. At the level of technological maturity, whether DC UHV or AC UHV is adopted, because the investment, power transmission capacity, transmission distance, and stability of the power grid system are different, and they can also be based on the principles of soundness, economy, and reliability. Based on local conditions, make comparison choices.
Build ultra high voltage power grids, improve the power transmission capacity of the power grid, and realize the mutual complementarity of electricity among major regional power grids. It is necessary for the development of renewable energy such as hydropower and wind power, photovoltaics, etc., to optimize industrial layout, save energy and reduce emissions, and promote social economy. The sustainable and healthy development is very necessary and should be accelerated.
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