Wind energy has huge potential to become major source of renewable energy for the modern world. For integrating wind farms to the AC grid, HVDC transmission systems have several advantages over AC transmission systems. This paper presents the design and control of voltage source converter based HVDC system for integration of wind farms in to AC grid. The designed VSC-HVDC system performance und...

In this paper, impedance based method and matching approaches were used separately to detect three phase to ground fault (LLLGF). In order to observe the accuracy of each method, Non-homogeneous distribution network was used as a tested network. Actual data from TNB (Tenaga National Berhad) Malaysia was adopted to model the network by using PSCAD/EMTDC simulation program. Both methods were test...

Currently, several offline digital simulation software tools are available, with varying degrees of modeling and simulation capabilities. This paper aims to compare the capabilities of two program packages for electric network simulation: ATP-EMTP and PSCAD/EMTDC for modeling lightning overvoltages. 2000 Mathematics Subject Classification: 68Uxx/Subject Classification for Computer Science. 281,...

Induction motor structures in DC electrified railways with their dynamic performance are studied. Characteristics of the current, voltage, electrical and mechanical torque and active and reactive power in accelerating, normal and regenerative braking are investigated. The characteristics of the induction motors used for Tabriz urban railway are simulated with PSCAD/EMTDC software proving the in...

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In this paper, by using the data of steel melting plant which contains major non-linear load i.e., induction furnace, we modeled such a system, which contains three 12-tons induction furnace in PSCAD software and simulated for three different operating conditions & studied harmonic pattern. Keywords—Induction Melting Furnace;Steel Melting Shop;Harmonics Analysis;Power Quality.

This paper is concentrated mainly to the cause and to clear the Power Swings in synchronous generator due to rotor speed oscillations in wind farm which is a distributed generation to maintain the stability of rotor oscillations. The paper presents different conditions of disturbances and faults in specified time period. In Power System Damping Oscillation modes are excited due to disturbance i...

This paper presents a novel current transformer (CT) saturation detection approach based on Gaussian Mixture Models (GMMs). High accuracy is the advantage of this method. GMMs are trained with secondary current of CT. The appropriate performance of the proposed method is tested by simulation of different fault conditions in PSCAD/EMTDC software. The results show that the trained GMMs can succes...