With the rapid development of industry, a large number of inductive loads and nonlinear loads are widely used. The use of these equipment will bring reactive power and harmonic problems to the power system of the machinery processing plant, and affect its normal production and operation. In the following article, Ku introduces the application of low-voltage power capacitors in machinery processing plants to solve their reactive power and harmonic problems in detail.

1. Influence of reactive power and harmonics

The use of a large amount of perceptual load will cause the power factor of the machinery processing plant to decrease, and the enterprise will be fined by the Power Bureau; In addition, the transmission of reactive power will increase the variable loss and line loss of the power system. When reactive power is in short supply, electrical equipment cannot operate under rated parameters, or even cannot start normally.

The use of a large number of nonlinear loads will bring serious harmonic problems to machinery processing plants. For example, it affects the service life of low-voltage power capacitors and other electrical equipment, resulting in overheating damage of electrical equipment; When the harmonic is serious, it will affect the normal use of other electrical equipment.

2. Reactive power compensation and harmonic control

In the power system of the machinery processing plant, the installation of low-voltage power capacitor can be used for reactive power compensation, and solve a series of problems such as low power factor being fined by the power bureau, increased power loss, poor voltage quality and so on. In order to solve the harmonic problem in mechanical processing plant, low-voltage power capacitor series filter reactor can be used to form a passive filter circuit, so as to filter the harmonic of power system. In addition to filter reactor, active power filter can also be used for harmonic control.

In the mechanical processing plant, the low-voltage power capacitor series filter reactor can realize the functions of reactive power compensation and harmonic control, so as to ensure the safe and stable operation of the power system in the mechanical processing plant.