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The application of dynamic phasors (DPs) in overhead line protection was investigated. Equations to estimate the fault loop inductance and resistance were derived using the principles of DPs. A systematic amplitude comparator‐based line distance protection scheme was developed using the equations derived to estimate the fault loop inductance and re...
A simple and fast method to identify the faulted conductors in a double circuit line with the help of a single circuit transient based fault type classifier is presented in this paper. In addition to a transient based single circuit fault type classifier, only currents locally measured through each conductor are required. Having known the fault typ...
A method for fault type discrimination and faulted phase identification using instantaneous local current measurements is proposed. Seven current components are obtained from the measured three-phase instantaneous currents through a transformation and band passed filtered to remove the fundamental components and high frequency content. Upon detecti...
The present invention relates to a method for identifying one or more faulty conductors in a power transmission system having at least two power transmission conductors and a method for determining a fault location. Both methods include the steps of monitoring current signals which are representative of currents in the conductors at a generally com...
Providing uninterrupted and undistorted power supply is essential due to increasing use of sensitive electronic devices which could malfunction under poor quality of power supply. Voltage flicker is one power quality issue which can arise due to fluctuating electrical loads or due to intermittent power sources such as solar and wind energy systems....
This paper addresses the control of the standard twin rotor multi-input-multi-output (MIMO) control system problem. First, nonlinear dynamic model of the system was derived using basic laws of physics. While it was possible to linearize some of the plant nonlinearities, some of them were not, such as squared input. In the conventional approach, thi...
In this paper we address the pitch axis control of the standard twin rotor multi-input-multi-output (MIMO) control system problem. Dynamic model of the pitch control system is derived using basic laws of physics, which results in a nonlinear plant model. Some of the plant nonlinearities are able to linearize, while some, such as squared input, are...
Is there any way to implement a real transposition scheme in PSCAD without ideally transposing the transmission line ? (e.g 1/3-1/3-1/3) I used the break out component and twist component to transpose, but that lead to an error when compiling.
I am trying to find a way to explain how transients are induced in transmission lines under faulty conditions using telegrapher's equations. Is there any book or a resource which describes how the telegrapher equations applied to 3 phase system ?
I am trying to implement the IEC-61000-4-7 standard method to evaluate power system harmonics on RTDS. Is there a method to get the harmonic components in a power signal without building a new component ?
I am trying to apply Hilbert Huang transform to the following signal.
As i understood the output IMFs should be five sinusoidal signals with amplitude of 1,0.8,0.6,0.4 and 0.3 with frequencies of 80,50,25,20 and 3.
However I am getting only two IMFs as outputs in my code.
Who can help me?
Evaluate advanced power quality event detection methods and synthesize an algorithm suitable for implementation on a multifunction device that use IEC 61850 sample value inputs.