Any problem with voltage in a power network is undesirable as it aggravates the quality of the power. Power electronic devices such as Voltage Source Converter (VSC) based Static Synchronous Compensator (STATCOM) etc. can be used to mitigate the voltage problems in the distribution system. The voltage problems dealt with in this paper are to show how to mitigate unbalanced voltage sags and volt...

It is challenging to assess the vulnerability of a cyber-physical power system to data attacks. In order to support vulnerability assessment, with the exception of analytic methods, a suitable platform for security tests needs to be developed. In this paper we analyze the cyber security of energy management system (EMS) against data attacks. First we extend our analytic framework that character...

A load flow and short circuit fault simulation of AC electrified railway distribution systems is presented with DIgSILENT PowerFactory software. Load flow of electrified railways distribution system with concerning multi train lines and dynamic characteristics of train load is studied for different time laps. The dynamic characteristics of train load in starting and braking conditions with diff...

In this paper the use of artificial neural network in power system stability is studied. A predictive controller based on two neural networks is designed and tested on a single machine infinite bus system which is used to replace conventional power system stabilizers. They have been used for decades in power system to dampen small amplitude low frequency oscillation in power systems. The increa...

Analyses necessary for the new power plant connection contain following quality analyses carriedout using simulation model: Estimation of emission level voltage waveform asymmetry at point connection, estimation high harmonic components and long-term shortterm flicker. Limits previously mentioned parameters have been defined in National Grid Code (at national level) or international standards. ...

DIgSILENT PowerFactory is a powerful software which includes a power system analysis function designed to cope with large power system power flows, and it handles both DC and AC lines, including all phase combinations (3ph, 2ph and single phase), with/without neutral conductor and ground wires, for both single circuit and mutually coupled parallel circuits. Although power systems are designed a...