How factories can save electricity - Solutions - Huaqiang Electronic Network

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1. Improve the operating level of the motor The motor is the most used equipment in the factory, and the capacity of the motor should be reasonably selected. To avoid the unreasonable use of high-power motors to drive small power equipment (commonly known as big horse-drawn carts), the motor must be operated in a high efficiency range. When the load of the motor is often lower than 40% of the rated load, it should be replaced reasonably to avoid the motor is often in light load operation, or the motor specified as the â–³ connection in normal operation is changed to Y connection to improve the motor. Efficiency and power factor. For electrical equipment that often has no load condition during work (such as electric motors, electric welders, etc.), no-load automatic power-off devices can be installed to avoid no-load losses.
2. Renewing electrical equipment and selecting energy-saving new products At present, many industrial and mining enterprises in China (such as transformers, electric motors, fans, pumps, etc.) have low efficiency and consume more power. These equipments are updated and replaced with energy-saving electromechanical products. It plays an important role in improving production and reducing the power consumption of products.
3. Improve power factor industrial and mining enterprises on the basis of the rational use of transformers, motors and Other equipment, can also be installed with reactive power compensation equipment to improve power factor. The reactive power compensation equipment inside the enterprise should be installed on the load side. For example, a capacitor, a synchronous compensator, etc. are installed on the load side, which can reduce the reactive current in the power grid, thereby reducing the line loss. The so-called two-part electricity price is to divide the electricity price into two parts, one is the basic electricity price, and the other is the electricity tariff. The basic electricity price is calculated based on the user's transformer capacity or maximum demand, and is a fixed fee, regardless of the amount of electricity actually taken by the user per month. The electricity tariff is calculated based on the amount of electricity actually taken by the user per month, which is a variable fee. The sum of the two parts of the electricity bill is the total electricity fee payable by the user throughout the month. The implementation of the two-part electricity price can promote the user to increase the load rate and equipment utilization. If the user's load rate is low and the transformer's capacity is too large, the basic electricity fee paid by the user is higher, and vice versa. When the user calculates the total electricity fee for the current month according to different categories, according to the regulations of the power department, if the power factor is high, part of the electricity fee may be reduced, and vice versa.
4. Promote and apply new technologies to reduce product power consumption quotas. For example, using far-infrared heating technology can greatly increase the energy absorbed by heated objects, make objects warm up quickly, have high heating efficiency, and have good power-saving effects. The power saving effect is better. There are many equipments in industrial and mining enterprises that need to use DC power, such as excitation power of synchronous motors, electrolysis in electrochemistry, metallurgy industry, electroplating power supply, DC power supply for municipal traffic trams, etc. In the past, most of these DC power sources were driven by a mercury arc rectifier or an AC motor to drive a DC generator. Their rectification efficiency was low. If a silicon rectifier or a thyristor rectifier device was used, the efficiency could be greatly improved, and the power saving effect was remarkable. In addition, the use of energy-saving lighting, the installation of power-saving muffler (ie, DC silent operation) on the AC contact of high current, strengthen the power management and do a good job of saving electricity, etc., are also important measures to save electricity. .