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Need an account? Click here to sign up. Download Free PDF. Jaya Babu. A short summary of this paper. Download Download PDF. Translate PDF. Obulesu2, Ch. When this harmonic current is Accepted Feb 27, interacted with system impedance, voltage waveform will distorted.
This harmonic pollution is undesirable in power systems. Therefore, it is important to know the harmonic behaviour of three-phase FC-TCR before Keyword: they can be used in a power system network. This analysis is useful to design the harmonic filter to Firing angle reduce the harmonic pollution in power systems.
All rights reserved. This ideal operation is not possible in realistic power systems because of increasing use of power electronics devices in modern power system network. Nonlinear components and loads, such as power converters, Flexible AC Transmission Systems FACTS devices, nonlinear saturation and hysteresis in components with magnetic cores represent the main contribution harmonic distortion.
Flexible alternating current transmission systems devices are widely used in transmission network to improve electrical and economic performance. But they are nonlinear devices, they generate undesirable distortions in voltage or current waveforms.
Distorted waveforms contain unwanted harmonics. This harmonic distortion creates many problems such as misoperation of protective devices, reduces the life of electrical equipment, and increases losses in the power systems [1]. A static VAR system provides a fast, smooth the exact multiple of the capacitor unit value is the and step-less variation of compensation of reactive number of capacitor units to be switched on. This will power injected into the line.
It ensures an accurate cause overcompensation if the required VAR is not voltage control of buses over a wide range of loads. In Figure 11, the fine gray middle voltage across the capacitor VC is compared with the line represents reactive power consumed or demanded system line voltage VL. The dark bottom line represents the capacitor is switched on.
And, the very thick topmost dark line represents the reactive power 3. The table shown below shows the corresponding reactive power associated with Figure 10 shows the TCR Block. The firing angles the source, capacitors and the loads. For example: for seconds PI controller. The GSG circuit Figure This difference is consumed by the inductor generates appropriate gate signal to turn ON coil as shown in Figure The unity. The pf of line is 4. Simulation and Results maintained at unity all the time as shown in Figure Conclusion [4] R.
Mathur and R. Vishwakarma and N. While doing so, Electrical, Electronics and Computer Engineering, the problem of over-compensation can be avoided by vol. In order to verify this, the [6] J. Gutierrez, J. Montano, M. Castilla, and A. IEEE, , pp. The genetic algorithm GA is used to get the optimal design for each proposed topology. The developed designs are evaluated during reactive power development with zero harmonic content.
Paper provides the ratings for each topology and suggests the possible modifications to adjust the design and minimize apparent power for reactors and switches.
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