At the meeting, Comrades from Shandong, Guangxi, and other regions introduced the achievements and experience in carrying out the energy efficiency improvement of distribution transformers. The State Grid Corporation of China introduced the excellent case of energy-saving transformation of distribution transformers. Experts and alliance members exchanged distribution transformers. Transform the investment and financing model and the advanced technology of energy-saving distribution transformers.
The participating units indicated that they will actively implement the distribution transformer energy efficiency improvement plan in accordance with the national unified arrangements, promote the elimination of high energy-consuming backward distribution transformers and the promotion and application of high-efficiency energy-saving power distribution equipment, so as to further promote energy saving and energy saving and environmental protection equipment manufacturing. development of.
The potential for energy conservation is huge. According to statistics, the loss of transmission and distribution in China accounts for about 6.6% of the national power generation, of which the loss of distribution transformers accounts for 40-50%. Taking 2013 as an example, the annual national power generation is 5.32 trillion kWh, and the power loss of distribution transformers is about 170 billion kWh, which is equivalent to 1.7 times the annual power generation (about 100 billion kWh) of the Three Gorges Power Station in 2013, and power consumption. Very serious.
As an important measure for energy conservation and emission reduction, many countries in the world have introduced corresponding policies to improve the energy efficiency of distribution transformers. In recent years, China has also accelerated the promotion and application of high-efficiency distribution transformers by implementing a plan for improving the energy efficiency of distribution transformers.Many transformer manufacturers in China have invested a lot of money in the introduction of foreign advanced manufacturing technology and equipment, and continue to develop low-loss transformers and transformers in various structural forms. For example, SCB10 series of dry-type transformers and low-loss products such as amorphous alloy cores are all displayed. China's distribution transformer energy-saving potential.
Last year, China formulated the "Transmission Transformer Energy Efficiency Improvement Plan (2015-2017)" and proposed that by the end of 2017, the upgrading of high-energy-distribution distribution transformers should be completed, and the proportion of high-efficiency distribution transformers in the network should be increased by 14%. With a relatively complete supporting system and a standardized market order, the proportion of newly added high-efficiency distribution transformers reached 70%. It is expected that by 2017, cumulative distribution of high-efficiency distribution transformers will reach 600 million kVA and annual energy saving will reach 9.4 billion kilowatts. At that time, it was equivalent to saving 3.1 million tons of standard coal and 8.1 million tons of carbon dioxide emissions.
At present, under the background of the state's efforts to promote energy-saving and emission-reduction, all localities have introduced policies to speed up the development and application of high-efficiency distribution transformers. Encourage efficient distribution transformer manufacturers to set up energy-saving service companies or cooperate with professional energy-saving service companies, and focus on the use of contract energy management models to carry out energy-saving projects for distribution transformers.
Sichuan, Jiangsu, Shandong, and other regions have also issued distribution transformer energy efficiency improvement plans and increased the promotion of high-efficiency transformers. According to the upgrade plan, by the end of 2017, Shandong Province will initially complete the upgrading of high-energy-distribution distribution transformers, and the proportion of high-efficiency distribution transformers in the network will reach 23%; cumulative distribution of efficient distribution transformers will reach 40 million kVA; Energy-distribution distribution transformers basically completed the elimination of high-energy-consuming transformers for S9 and below.After the Shandong Province's efficient distribution transformer energy efficiency improvement plan is completed, it is expected to save 630 million kwh per year, equivalent to saving 210,000 tons of standard coal and reducing carbon dioxide emission by 540,000 tons.
The goal of Jiangsu is to initially complete the upgrading of high-energy-distribution distribution transformers in industrial enterprises by the end of 2017, and increase the ratio of high-efficiency distribution transformers (2-level energy efficiency and above-mentioned distribution transformers specified in GB20052-2013) on the network by 15%. The proportion of newly-added high-efficiency distribution transformers in the current year reached 70%, and it is expected that in the three years, 60 million kVA of high-efficiency and energy-saving distribution transformers will be promoted.
A person in charge of a transformer manufacturer told the reporter that due to factors such as raw materials, the cost of energy-saving transformers was significantly higher than that of traditional transformers, and price factors were also the main factors affecting the popularity and promotion of energy-saving transformers.
In response, Zhenjiang, Jiangsu stipulated that companies that purchased and installed energy-efficient distribution systems that use energy efficiency above Level 2 should be subsidized by the city’s financial special funds on the basis of provincial financial subsidies. Purchasing and installing an energy-efficient distribution transformer using energy efficiency class 1 with a subsidy standard of RMB 20/kVA; purchasing and installing an energy-efficient distribution transformer with energy efficiency class 2 at a subsidy standard of RMB 5/kVA. The 100% standard subsidy purchased in 2015-2016, and the 80% subsidy per standard purchase in 2017.
Transformer "Energy Saving and Consumption Reduction“ ”Distribution Transformer Energy Efficiency Improvement Plan will speed up the development and popularization of high-efficiency energy-saving distribution transformers, promote the upgrading of distribution transformer industrial structure, and comprehensively improve the energy efficiency of distribution transformers, which has played a huge role in the promotion of energy-saving transformers. The promotion function.” A person in charge of a transformer company in Shanghai said that new energy-saving distribution transformers that meet the diverse needs of customers will become the mainstream of the power industry.
It is understood that China's transformer industry is large, but the majority of SMEs, the concentration is not high, the manufacturers are more dispersed, has become the industry industry can not ignore the industry dilemma.
An expert from the National Center for Supervision and Inspection of Low-voltage Power Distribution Equipment Quality Supervision and Testing Center told reporters that the promotion of energy-saving transformers will not only effectively help energy-saving and emission reduction, but more importantly, it can open up a breakthrough for the highly competitive transformer industry and achieve the effect of killing two birds with one stone.
It is understood that energy-saving distribution transformers include amorphous alloy core transformers, capacity transformers, etc. Such as amorphous alloy transformer, is an energy-saving transformer developed in the 70s of last century. Due to the use of a new soft magnetic material, amorphous alloys, the performance of amorphous alloy transformers exceeds that of conventional silicon steel transformers. It is estimated that the amorphous alloy transformer will reduce the no-load loss of the transformer by about 80% and the no-load current by about 85% compared with the traditional silicon steel transformer. It is an ideal distribution transformer with good energy-saving effect, but it does not have the price and raw material supply. Advantage.
Breaking the bottleneck of promoting energy-saving transformers "In recent years, China has repeatedly introduced policies to speed up the development and application of high-efficiency distribution transformers. With the promotion of these policies, the output of high-efficiency energy-saving distribution transformers has increased, but the overall energy efficiency level is still low. The development of energy-saving transformers is lagging behind and there is a huge potential for energy saving,” Xue Jun, general manager of Baotou Kedian Electric Manufacturing Co, Ltd. said in an interview earlier. With the gradual adjustment of China's industrial structure, more and more importance is attached to improving the efficiency of power supply and distribution systems, and the proportion of distribution transformers in the entire distribution system is very large, so the requirements for its loss, noise and cost are increasing. The higher the price, the existing S11-type products have failed to meet the market's needs and are gradually being eliminated. The lower-loss S13-type products and S15-type products have gradually become the mainstream of the market.
An expert from the National Transmission and Distribution Technology Collaboration Network said that the distribution transformers' energy efficiency improvement plans have been introduced one after another and will give the amorphous transformers many opportunities. However, some experts pointed out that at present, the price of energy-saving distribution transformers, especially amorphous alloy transformers, is not cheap, and enterprises will have to invest large amounts of initial capital in the process of transformer replacement, and the cost recovery period brought by equipment is too long. Therefore, users can hardly make up their mind to replace. The solution to high costs and prices is to continuously improve the industrialization capabilities of high-efficiency distribution, including process optimization, material optimization, and increase production efficiency.
In terms of technology and industrialization, it is necessary to improve the industrialization capability of efficient distribution transformers. Solve the key raw materials and basic production process problems of distribution transformers, strengthen the research on energy-saving technologies of distribution transformer systems, strengthen the application research of new technologies, new structures, and new materials for high-efficiency distribution transformers, focusing on the research of single-phase distribution transformers, on-load tuning The applicable occasions and technical reliability of pressure distribution transformers, aluminum winding distribution transformers, and high-ignition plant insulation oil distribution transformers will enhance the continuous innovation capability of the distribution transformer industry.
However, energy-saving transformers are also in urgent need of solving some problems in their own development. It is necessary to improve the construction of an efficient distribution transformer matching system. Accelerate the formulation and improvement of relevant standards and norms, standardize distribution transformer testing and certification agencies, and establish a life cycle assessment system for distribution transformers. Carry out high-efficiency distribution transformer manufacturing and application demonstration, carry out demonstration and system application demonstration of efficient distribution transformers.
