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Do you know the importance of power harmonic control in Sichuan?

Classification: FAQ ; release time: ; December 15, 2019 ; Author: Electric Genie
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Harmonic control of Sichuan Electric Power The company spirit tells you about the importance of power harmonic control, to have a look!

At present, harmonic control follows who pollutes, that is to say, the enterprises that produce harmonics must do harmonic control to meet the requirements of national standards. The measures of harmonic control include adding passive filter equipment, making the harmonic flow into the passive filter equipment without injecting into the power grid, or the active filter equipment, generating harmonics opposite to the existing harmonics, making them offset each other, changing the way of rectifier to reduce harmonics, changing the connection mode of transformer to make it not injected into the power grid, etc. the main measures are to install passive filter equipment or active filter equipment

Harmonic is due to a large number of power electronic equipment such as nonlinear load put into operation, resulting in power supply voltage and current waveform distortion. Through Fourier decomposition of the distorted voltage and current waveform data, the components whose frequency is higher than the fundamental frequency of 50 Hz become harmonic wave.


The harm of harmonics to electrical equipment is mainly manifested in the following aspects:

The main influence of harmonics on the rotating motor is the additional loss, followed by mechanical vibration, noise and harmonic overvoltage.

The harmonic current not only causes the additional loss of transformer winding, but also causes the shell, outer layer silicon steel sheet and some fasteners heating, and may cause serious local overheating.

Harmonic makes the noise of transformer increase, and harmonic current flowing through transformer caused by harmonic source may damage transformer under resonance condition.

Harmonic control is to reduce the generation of harmonics through various measures, or make the generated harmonics flow into the filter equipment, or offset the generated harmonics, so that the harmonic content on the power grid meets the requirements of national standards.

At present, harmonic control follows who pollutes, that is to say, the enterprises that produce harmonics must do harmonic control to meet the requirements of national standards.

The measures of harmonic control include adding passive filter equipment, making the harmonic flow into the passive filter equipment without injecting into the power grid, or the active filter equipment, generating harmonics opposite to the existing harmonics, making them offset each other, changing the way of rectifier to reduce harmonics, changing the connection mode of transformer to make it not injected into the power grid, etc. the main measures are to install passive filter equipment or active filter equipment Preparation.

To sum up, harmonics The harm to us is multifaceted Harmonic control is very important. If you have business needs, you can contact us by calling. We have been engaged in harmonic control of Sichuan electric power for many years and have a good reputation in the industry. We are looking forward to your call for consultation.

 Sichuan electric power operation and maintenance

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