On December 9th, the National Development and Reform Commission announced on the website of the National Development and Reform Commission that the "Power Grid Enterprises Implementing the Demand Side Management Objectives Responsibility Assessment Program (Trial)" (hereinafter referred to as "this document") requires the grid companies to give full play to their advantages and conduct extensive and in-depth power demand side management work. . The integration of electricity power saving indicators and the development of power demand side management were included in the grid company's annual assessment indicators.
main content:
The power grid electricity savings of grid companies include the power grid companies themselves, their energy-saving service companies implementing social projects, purchasing social services, and promoting the saving of electricity by the community.
1. The amount of electricity power saved by the following items can be counted into the statistics: power saving of transmission and distribution systems, energy saving of motor systems, energy-saving reform of boilers (kilns), utilization of waste heat and residual pressure, energy efficiency of buildings, green lighting, heat pumps, and electricity Cold storage (heat), management of energy-saving projects, etc.
2. The project energy-saving is calculated according to the annual energy-saving capacity formed after acceptance, and the other energy saving realized during the implementation of the power demand-side management project is converted into the corresponding energy-saving amount according to the coefficient of discounted coal declared by the National Bureau of Statistics.
3. The project data included in the statistics shall be monitorable or verifiable. The following items are not counted: 1) New energy power generation projects with commercial operations as the main purpose; 2) Projects where power supply savings are difficult to reasonably identify and review; 3) Power consumption reduced through the implementation of orderly electricity use.
Comments:
1. The upward adjustment of transmission and distribution tariffs in the case of a good grid profitability implies that the grid will increase its investment next year. The main way for energy saving in power transmission and transformation systems is to reduce line losses, and to reduce line losses can be achieved in several ways: 1) step-up transformation of the power network; 2) replacement of conductor sections with rough sections; 3) replacement of high-loss transformers; 4) increase Reactive power compensation; 5) Reduce the corona of high-voltage overhead AC transmission lines. From the actual situation of China's power grid network, these five areas have room for improvement.
2. It is imperative that the construction of UHV DCs be imperative if the UHV exchanges can continue to be approved. At present, China's main grid has been upgraded to 550KV, and the State Grid plans to upgrade the main grid to 800KV/1000KV. We believe that due to the high safety requirements for UHV ACs, following the approval of the Jindongnan-Nanyang-Jingmen 1000KV UHV AC line and the Huainan-Shanghai 1000KV UHV AC line, it is still uncertain whether the follow-up lines will continue to be approved. Sex. However, due to the successive production of hydropower in Southwest China, the construction of UHV DC projects is imperative. We expect that about 3-4 UHV DC projects will be approved each year in the next five years. We are optimistic about the development prospects of the UHV DC industry.
3. The distribution network has the greatest potential for energy saving, and energy-saving transformers will benefit first. There are a large number of high-energy-consuming S7 and S9 silicon steel transformers in China's power distribution network. According to our understanding from the industry, the State Grid and China Southern Power Grid have quietly deployed transformer replacement projects. Among them, China Southern Grid Corporation mainly promotes S13 silicon steel transformers, and the State Grid The main transformer amorphous alloy. At present, the annual demand for amorphous alloy transformers is about 40,000 units, which accounts for 5% of the total distribution transformer demand. According to the prediction of the production capacity of Antai Technology, 2014, Antai Technology’s amorphous strip production capacity can reach 100,000 tons, with a 90% yield. The calculation corresponds to 150,000 sets of amorphous alloy transformers (500KVA). We believe that the demand for amorphous and gold transformers will grow rapidly in the future.
4. Better energy efficiency, dynamic reactive power compensation will gradually replace the traditional reactive power compensation. There are three main ways of reactive power compensation in the power grid: substation compensation, transmission line compensation, and user-side dispersion compensation. At present, reactive power compensation is basically installed in all links in China. Among them, most users with high energy consumption have installed dynamic reactive power compensation such as SVC or SVG. However, traditional reactive power compensation methods are still used in substations and transmission lines. Compared with traditional reactive power compensation equipment, dynamic reactive power compensation has a faster response speed and better compensation effect. We believe that in the future, a large number of dynamic reactive power compensations will be used instead of traditional reactive power compensation in substations and transmission lines.
5. It is recommended to pay attention to energy-saving transformers and dynamic reactive power compensation industries. We believe that the distribution network has the largest energy saving potential and the lowest technical barriers. The introduction of this document will benefit the energy-saving transformers first, with the focus of the proposal focusing on confidence in the electrical industry. Secondly, the dynamic reactive power compensation at the power transmission and transformation side is a long-term development trend instead of traditional reactive power compensation. It is recommended to pay attention to leading companies in the industry, such as Rongxin and Hengshun Electric. In addition, we also recommend focusing on UHV DC transmission leading enterprises such as China Xidian.
main content:
The power grid electricity savings of grid companies include the power grid companies themselves, their energy-saving service companies implementing social projects, purchasing social services, and promoting the saving of electricity by the community.
1. The amount of electricity power saved by the following items can be counted into the statistics: power saving of transmission and distribution systems, energy saving of motor systems, energy-saving reform of boilers (kilns), utilization of waste heat and residual pressure, energy efficiency of buildings, green lighting, heat pumps, and electricity Cold storage (heat), management of energy-saving projects, etc.
2. The project energy-saving is calculated according to the annual energy-saving capacity formed after acceptance, and the other energy saving realized during the implementation of the power demand-side management project is converted into the corresponding energy-saving amount according to the coefficient of discounted coal declared by the National Bureau of Statistics.
3. The project data included in the statistics shall be monitorable or verifiable. The following items are not counted: 1) New energy power generation projects with commercial operations as the main purpose; 2) Projects where power supply savings are difficult to reasonably identify and review; 3) Power consumption reduced through the implementation of orderly electricity use.
Comments:
1. The upward adjustment of transmission and distribution tariffs in the case of a good grid profitability implies that the grid will increase its investment next year. The main way for energy saving in power transmission and transformation systems is to reduce line losses, and to reduce line losses can be achieved in several ways: 1) step-up transformation of the power network; 2) replacement of conductor sections with rough sections; 3) replacement of high-loss transformers; 4) increase Reactive power compensation; 5) Reduce the corona of high-voltage overhead AC transmission lines. From the actual situation of China's power grid network, these five areas have room for improvement.
2. It is imperative that the construction of UHV DCs be imperative if the UHV exchanges can continue to be approved. At present, China's main grid has been upgraded to 550KV, and the State Grid plans to upgrade the main grid to 800KV/1000KV. We believe that due to the high safety requirements for UHV ACs, following the approval of the Jindongnan-Nanyang-Jingmen 1000KV UHV AC line and the Huainan-Shanghai 1000KV UHV AC line, it is still uncertain whether the follow-up lines will continue to be approved. Sex. However, due to the successive production of hydropower in Southwest China, the construction of UHV DC projects is imperative. We expect that about 3-4 UHV DC projects will be approved each year in the next five years. We are optimistic about the development prospects of the UHV DC industry.
3. The distribution network has the greatest potential for energy saving, and energy-saving transformers will benefit first. There are a large number of high-energy-consuming S7 and S9 silicon steel transformers in China's power distribution network. According to our understanding from the industry, the State Grid and China Southern Power Grid have quietly deployed transformer replacement projects. Among them, China Southern Grid Corporation mainly promotes S13 silicon steel transformers, and the State Grid The main transformer amorphous alloy. At present, the annual demand for amorphous alloy transformers is about 40,000 units, which accounts for 5% of the total distribution transformer demand. According to the prediction of the production capacity of Antai Technology, 2014, Antai Technology’s amorphous strip production capacity can reach 100,000 tons, with a 90% yield. The calculation corresponds to 150,000 sets of amorphous alloy transformers (500KVA). We believe that the demand for amorphous and gold transformers will grow rapidly in the future.
4. Better energy efficiency, dynamic reactive power compensation will gradually replace the traditional reactive power compensation. There are three main ways of reactive power compensation in the power grid: substation compensation, transmission line compensation, and user-side dispersion compensation. At present, reactive power compensation is basically installed in all links in China. Among them, most users with high energy consumption have installed dynamic reactive power compensation such as SVC or SVG. However, traditional reactive power compensation methods are still used in substations and transmission lines. Compared with traditional reactive power compensation equipment, dynamic reactive power compensation has a faster response speed and better compensation effect. We believe that in the future, a large number of dynamic reactive power compensations will be used instead of traditional reactive power compensation in substations and transmission lines.
5. It is recommended to pay attention to energy-saving transformers and dynamic reactive power compensation industries. We believe that the distribution network has the largest energy saving potential and the lowest technical barriers. The introduction of this document will benefit the energy-saving transformers first, with the focus of the proposal focusing on confidence in the electrical industry. Secondly, the dynamic reactive power compensation at the power transmission and transformation side is a long-term development trend instead of traditional reactive power compensation. It is recommended to pay attention to leading companies in the industry, such as Rongxin and Hengshun Electric. In addition, we also recommend focusing on UHV DC transmission leading enterprises such as China Xidian.
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