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The paper illustrates the use of MATLAB/SIMULINK software for the modelling of D-statcom system. The dynamic behaviour of the system is learned by testing the basic system under large and small disturbances. The voltage sag mitigation associated with different configurations of the system is observed. To show the effect of controller on the voltage sag mitigation and reactive power compensation under...
Due to large power demand and environmental issues, electrical power generation from renewable energy sources is receiving more attention. Wind energy generation systems are being integrated to power networks worldwide in increasing numbers. The power system is therefore facing new challenges due to intermittent nature of input source. One of these problems is voltage stability in wind farms equipped...
This paper presents the systematic procedure of the modeling and simulation of a Dynamic Voltage Restorer (DVR) for power quality problems, voltage sag and swell based on Sinusoidal Pulse Width Modulation (SPWM) technique. Power quality is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure of end use equipments. The major problems dealt here is the voltage...
This paper presents the modeling and simulation of a dynamic voltage restorer as a voltage sag/swell mitigation device in electrical power distribution networks. The dynamic voltage restorer, with its excellent dynamic capabilities, when installed between the supply and a critical load feeder, can compensate for voltage sags/swell, restoring line voltage to its nominal value within few milliseconds...
In this paper, design of autotransformer based 24 Step AC-DC converter fed vector controlled Induction motor drive is presented and its Matlab/Simulink model is given. Also these results are compared with 12-pulse AC-DC converter fed vector controlled Induction motor drive. This paper deals with various multipulse AC-DC converters for improving the power quality in vector-controlled induction motor...
India, a developing country, is facing many problems in growth at every point of electrical energy system. In such cases, smart grid is the only solution which provides an open market of electricity generation, transmission and distribution. Indian power sector has taken some steps for framework of smart grid with various regulatory and standards' organizations. India is having various constraints...
In this paper, the current Harmonics in the 12-Pulse uncontrolled AC/DC converter fed AC Drives was studied. The 12-pulse Δ-Y type AC/DC converter will keep a balanced voltage with 30° phase shifted at the low coupling coefficient condition. Different converter arrangements for 12-pulse-based rectification are also studied and a novel harmonic mitigator capable of suppressing fifth, seventh, and 11...
Wind power injection into an electric grid affects the power quality due to the fluctuation nature of the wind and the comparatively new types of its generators. On the basis of measurements and norms followed according to the guidelines specified in IEC-61400 (International Electro-technical Commission) standard, the performance of the wind turbine and thereby power quality are determined. The power...
Voltage sags is a common power system disturbance, usually associated with power system faults. Therefore the effective detection of voltage sag event is an important issue for voltage sag analysis and mitigation. There are several detection methods for voltage sags such as RMS voltage detection, peak voltage detection, and Fourier transform methods. The problem with these methods is that they use...
This paper deals with the design and implementation of a multilevel voltage source converter based static synchronous compensator (STATCOM) employing an effective modulation control technique simulated in a MATLAB Simulink environment. The main objective of this paper is to maintain the voltage stability by compensating the reactive power in the power system. Hence, a new efficient control strategy...
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