High efficiency motor is imperative
As the driving device for various devices, the motor is the most power-consuming terminal device. In 2011, the national motor holding capacity was about 1.7 billion kilowatts, and the total power consumption was about 3 trillion kilowatt hours. The motor power consumption accounted for 64% of the total electricity consumption of the whole society, accounting for 75% of industrial electricity. However, the average efficiency of China's motor is 3-5 percentage points lower than that of foreign countries, and the operating efficiency of the motor system is 10-20 percentage points lower than that of foreign countries. It is estimated that each time the motor energy efficiency is increased by one percentage point, the annual electricity consumption can be saved by more than 26 billion kWh; if the efficiency of the motor system is increased by 5-8 percentage points, the annual energy saved is equivalent to the power generation of 2-3 Sanjun power stations.
According to the IEC60034-30 international standard, the motor efficiency is divided into four levels: IE1, IE2, IE3, and IE4 from low to high. China's standard GB18613-2012 formulated in 2012 divides the motor into three levels, two levels and one level, corresponding to international standards IE2, IE3 and IE4. According to GB18613-2012, high-efficiency motors only refer to motors that achieve energy efficiency two levels relative to IE3 energy efficiency standards and above. According to survey data, China's IE1 grade motor market share is close to 90%, and the proportion of motors above IE2 is only 8%, which has caused great waste to the entire social resources. Promoting high-efficiency motors has become an important measure to improve energy efficiency. one.
After years of development, under the guidance of Huimin's engineering policy support, the production capacity and promotion of high-efficiency motors have achieved good results, but in general, the current proportion of high-efficiency motors is still relatively low, and the proportion of high-efficiency motors in existing stock motors is less than 5%. The high-efficiency motors produced are mainly sold abroad. How to start the domestic high-efficiency motor user market and stimulate domestic demand is the main content to promote the transformation and upgrading of the motor industry.
User enterprise is the key
The implementation of the motor energy efficiency plan should be promoted from the aspects of production links, user links, market mechanisms, and policy standards. The production process requires a combination of stock adjustment and incremental improvement. The stock adjustment includes the elimination of existing backward motors and the transformation of existing motor systems. The incremental increase refers to purchasing high-efficiency motors as much as possible on the basis of eliminating and renovating old motors.
There are many aspects involved in improving the energy efficiency of the motor, including the production and use of the motor, the upstream materials and equipment supporting the motor manufacturer, the downstream fans, pumps, compressors, etc., and the recycling and remanufacturing of used motors. User links are the key to promoting efficient motors.
In the future, a group of large-scale energy-saving service third-party organizations with energy-saving auditing, energy-saving services and energy-saving consulting as their main businesses will be cultivated to provide services for enterprises. According to the calculation of the Ministry of Industry and Information Technology, key energy-consuming enterprises implement the motor energy efficiency improvement plan. Generally speaking, the investment can be recovered in 2-3 years. The most critical factor is whether the enterprise realizes its own benefits.
Promotion of contract energy management model
In order to promote high-efficiency motors in the user segment, the Ministry of Industry and Information Technology will integrate professional energy-saving service companies, financial institutions, third-party energy-saving certification institutions and other resources to promote the energy-saving transformation mode of the user's motor system by contract energy management. In this case, a large number of motor system energy-saving transformations will stimulate the demand market for high-efficiency motors, stimulate the production of more efficient motor products in the field of motor production, and will also stimulate investment in social institutions such as finance, and will actively promote the current expansion of domestic demand. Promote.
Contract energy management is a new type of market-oriented energy-saving incentive mechanism. Energy-saving service companies operating based on this mechanism, through contracting with energy-using units, provide energy-saving diagnostics, program design, financing, transformation and other one-stop services for energy-using units. And recover investment and obtain reasonable profits in various ways such as energy conservation benefit sharing. The energy-saving retrofit of the motor system refers to the overall consideration of the motor and the dragging device as a system. That is to encourage the enterprise to select the high-efficiency motor to replace the inefficient motor and then the matching between the motor and the dragging device when formulating the motor energy efficiency improvement plan. The transformation, the realization of high-efficiency motor promotion, the elimination of low-efficiency motors, the matching transformation of motors and dragging equipment, etc.
In the contract energy management mode to promote the energy-saving transformation of the motor system, China has dozens of mature technologies and typical application cases, and the results are very good. In the next step, the Ministry of Industry and Information Technology will screen and release a number of contract energy management companies with core technology, high service quality and strong resource integration capabilities, and recommend them to key power companies. And establish a docking cooperation platform between contract energy management companies, key users, third-party energy-saving certification institutions, and financial institutions, and through multiple market-approved and mutually constrained market-oriented models, further improve the confidence of enterprises in energy-saving transformation of motor systems and reduce risks. .