Abstract : This paper introduces the principle of domestic multi-level high-voltage frequency converter and its application in Kuitun Power Plant No. 1 of Xinjiang Production and Construction Corps. The results show that after frequency conversion modification of the power plant's circulating pump equipment, the energy-saving effect is very obvious, and the safety and reliability of the equipment and system are improved, and the service life of the pump and motor is extended.
Keywords: High-voltage frequency converter energy saving
Abstract : This paper describes the chief principle of high voltage inverter alld introduces its application in KuiTun Thermal Power Plant of XinJiang． The result shows that the power plant carl acquires obvious benefit by using high voltage inverter, such as saving a lot of energy, improving the reliability of the system, and the operating life of the water pump and motor．
Key words : High voltage inverter Energy saving
1 Introduction
With the continuous development of the national economy, energy issues are becoming increasingly prominent, and energy conservation is receiving more and more attention. According to statistics, the annual electricity consumption of various types of motors accounts for about 65% of the country's total electricity generation, and high-power fans and pumps account for about 50% of the total industrial electricity consumption annually. Minimizing the electricity consumption of equipment such as fans and pumps is of great significance for energy conservation.
The Xinjiang Kuitun Power Plant No. 2, under the Xinjiang Production and Construction Corps, has an installed capacity of 2 x 250MW. In the circulating water supply system, water resources are recycled through circulating water pumps. After heat exchange, the hot water enters the cooling facilities for cooling, reducing its temperature to an allowable level. This cooling water is then repeatedly fed into the condenser for reuse. Since the system water level is relatively stable, the head of the circulating water pumps is also relatively stable, and their capacity is determined based on the calculated water volume. The two units share a common circulating water pipe and are equipped with four 176kW circulating water pumps, along with two 250kW/6kV and two 220kW/6kV motors.
For details, please click: Application of High-Voltage Variable Frequency Speed Control Technology in Circulating Water Pumps of Thermal Power Plants
