YTPQC-SVG Static Var Generator in Automobile manufacturing

Power Quality Problems

The automobile manufacturing industry is a typical heavy industrial industry, and its electricity demand has many characteristics, such as large electric energy demand, low power factor of electrical equipment, many typical nonlinear loads and impact load equipment, and high power quality requirements.

Hazards and Influence

In the traditional four major automobile manufacturing processes, although there are certain differences in the technologies and processes of different manufacturers, automation transformation has been carried out invariably in recent years, such as flexible automated production lines composed of high-end CNC punching machines, painting robots, welding robots, hoisting robotic arms A large number of industrial robots have been put into use. While automation equipment improves work efficiency and reduces labor, it also produces a series of problems.

• The automobile stamping process is mainly composed of high-precision CNC punching machine, plasma cutting machine, robot arm and worktable. serious etc.
• The welding positions of automobiles are different, and the welding methods used are also different. Common welding equipment mainly includes spot welding, projection welding, argon arc welding and carbon dioxide shielded welding and other welding methods. Among them, spot welding is used more, and the generated harmonics cause The three-phase voltage is unbalanced, the neutral line current is too large, the skin effect is serious, and the power factor is low.
• The main equipment of the coating process are power electronic devices, spray guns and large-capacity heating equipment, and most of them use rectification and frequency conversion technology, causing on-site harmonic pollution. Among them, the power factor of the heating equipment is low, causing a large waste of electric energy. The overall performance is as follows: The inductive reactive power is large, the power factor is low, and the harmonic current pollution is serious.
• The final assembly process in modern automobile manufacturing uses a large number of industrial robots to assist operations, and will integrate a large number of components such as diodes, triodes, rectifier bridges and switching power supplies, resulting in harmonic pollution that interferes with the normal operation of the equipment, and in severe cases will affect the normal operation of industrial robots. service life, etc.

YT Solutions

The automobile manufacturing industry is a typical heavy industrial industry, and its load is large, and there are also a large number of impact loads, resulting in a rapid load change, so that the traditional capacitor cabinet reactive power compensation cannot keep up with the load change. Considering the cost and practicability, the hybrid reactive power compensation method is generally used for reactive power compensation. The hybrid dynamic reactive power compensation device consists of two parts - SVG Static Var Generator unit and switching capacitor/reactor reactive power compensation unit. For large-capacity, fixed reactive power, configure switching capacitors for compensation; for small-capacity, fast-changing reactive power, configure corresponding static var generator capacity for compensation; hybrid dynamic reactive power compensation ensures switching accuracy And the response speed at the same time improves the service life of the equipment.

Project Examples

Yibin Kaiyi Automobile Co., Ltd. is the leading engine for Yibin to build a 100 billion-level automobile industry, and a pillar enterprise of vehicle production in Sichuan Province. In order to ensure the power quality of the enterprise, a large number of hybrid reactive power compensation devices are installed in the park for reactive power management. The following is a set of 200kVAr Static Var Generator +400kvar capacitor compensation hybrid reactive power compensation device. After the equipment is running, the on-site power factor rises from 0.90 to about 0.99.