Power Quality Analysis - Power Quality

Power Quality:
Electricity is one of the most widely used raw materials in the commercial and industrial fields. Since it requires continuity and cannot be stored, any quality assurance and supervision cannot be ensured before use. For this reason, the manufacturer needs to be quality and reliable. The production of electricity is far away from the usage areas, the production of several different generators in production and the use of different transformers and cables up to the consumption point affect the quality and reliability negatively.

From the consumer's perspective, the problem is becoming quite complex. The energy produced with the generators without any problem cannot be delivered to the consumer at the quality they are produced. Interruptions, short-term changes in voltage level negatively affect many users. For this reason, although the definition of power quality can be done at any point on the network, it is generally important for the consumer side. In order to define the power quality simply, at any point in the network, the frequency and frequency of the voltage is to maintain the nominal values and the waveform is sinusoidal. Bir Bir Harmonics in Electrical Installations ler, Birsen Publishing, November 2003.

  • Fluctuation of voltage amplitude,
    Interruptions,
    Impact changes,
    Harmonics,
    Change of frequency,
    Flicker,
    Three phase imbalances are seen as major power quality problems.
     

The non-sinusoidal current draws from the network cause a serious harmonic pollution in the transmission and distribution systems and create voltage drops in the lines in such a way as to distort the voltage waveform. For this reason, manufacturers think that sensitive consumers should take their own quality measures by taking costs. Producer's high quality production and transmission for every consumer
It is not economical. However, the manufacturer should also prevent the occurrence of points that may cause problems in the network design or determine the risky points by estimating the risk. Freezing colds, strong winds and lightning, such as the result of natural events that do not originate from the manufacturer's natural factors can be counted as disruptive factors and these problems can be reduced with the right calculations.
In order to increase the quality of the produced energy and to produce a solution in this direction, firstly the causes of the poor quality should be found, the time of their occurrence should be determined and various classifications should be made according to these data. By measuring the power quality, the parameters such as voltage and current changes can be recorded and necessary precautions can be prepared according to these measurement results. Continuous monitoring of the network provides the necessary data for the statistical analysis of the problems occurring in power systems, and it is possible to determine what measures can be taken in the future.

 

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