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Harmonic characteristics of power distribution systems for enterprise automation

Click: Time:2022-12-21 14:51:33

Harmonic pollution sources are complex and changeable. There may be harmonics generated by itself, harmonics from the high-voltage grid, or harmonics generated by other users on the same supply bus.

The effect of harmonics on precision equipment. There are a large number of precision equipment stored in the laboratory or in the electrical use of automated production lines.

In many cases, these devices are both generators and victims of harmonics. Harmonics can affect the normal operation of equipment in the laboratory, making the ongoing experiment impossible; Harmonics will also affect the intelligent controller and PLC system of the automated production line, causing the automatic control equipment to fail. In many national laboratories, automatic production lines of tobacco minting enterprises, and automatic production lines of paper enterprises have all experienced equipment failures due to the influence of harmonics.

Detailed solutions for automated production line industry: Harmonic pollution sources are complex and changeable. There may be harmonics generated by itself, harmonics from the high-voltage grid, or harmonics generated by other users on the same supply bus.

The effect of harmonics on precision equipment. There are a large number of precision equipment stored in the laboratory or in the electrical use of automated production lines.

In many cases, these devices are both generators and victims of harmonics. Harmonics can affect the normal operation of equipment in the laboratory, making the ongoing experiment impossible; Harmonics will also affect the intelligent controller and PLC system of the automated production line, causing the automatic control equipment to fail. In many national laboratories, automatic production lines of tobacco minting enterprises, and automatic production lines of paper enterprises have all experienced equipment failures due to the influence of harmonics.

The user value of harmonic governance

Reduce the influence of harmonics, avoid various faults such as voltage amplification caused by harmonics damaging electrical equipment, and improve power supply security.

Control harmonics, reduce the harmonic current injected into the system, and meet the requirements of national standards;

Reactive power dynamic compensation, power factor up to standard, avoid fines from power supply companies.

Problems you may be experiencing?

1. The production line uses a large number of frequency conversion speed regulation equipment and motors, causing harmonic pollution and power quality hazards within the enterprise;

2. The harmonics are complex and changeable, which is not easy to control, which seriously affects the normal and safe operation of the electrical equipment of the production line;

3. Traditional reactive power compensation equipment is often damaged, and even produces harmonic amplification phenomenon.

Our Solutions:

1. According to the harmonic situation of the system, reasonably configure the reactance rate, and use the static safety compensation device ESBELGT to compensate for the reactive power of the system and improve the power factor of the system;

2. The active filter ESBELAHPF is used to control the harmonics of the system, so that the harmonic current content of the system is reduced to below the limit required by the national standard;

3. Passive filtering device is adopted, tuning parameters are designed, and the reactive power is compensated while controlling the characteristic harmonics of the system and improving the power factor.

4. The ESBELmtr dynamic reactive power generator is used to provide reactive power to each phase of the system in the dynamic form, and at the same time control the harmonics of the system.


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