An on-line single-phase partial discharge (PD) measuring system using Rogowski coil is simulated in EMTP/ATP for the monitoring of falling trees on coveredconductor (CC) overhead distribution lines. The simulation results are compared with those obtained from the laboratory measurements. The effect of Rogowski coil terminating impedance is analysed for the performance of PD measuring system. Th...

Sensitivity analysis of a power system against overvoltage was performed. The analysis took into account the origin of the overvoltage, the grounding resistance magnitude and overvoltage injection point. The IEEE 13 bus test feeder system was implemented in EMTP-ATP and lightning and switching overvoltages were applied. Three cases were evaluated: the first one, applying lightning overvoltage a...

In this paper, performance evaluation of different schemes for location of fault in series compensated transmission lines are presented. A fault location algorithm using two end measurements and another fault location algorithm using one end measurements for transmission lines with series compensator at midpoint are simulated and results are obtained. Both the schemes are compared on the basis ...

Overhead distribution lines are prone to lightning overvoltages due to their configurations and characteristics. Metal Oxide Varistor (MOVs) arresters for many years have proven to be more advantageous than others arresters in lightning surge protection; therefore it is worthwhile to continually assess the behavior and performance of these arresters to different kind of overvoltages caused by l...

This paper outlines a new program called E-TRAN, which bridges the gap between loadflow/stability programs and electro-magnetic transients programs. It is essentially a translation program for power systems, but includes many features to avoid manual calculations (such as the automated formation of multi-port network equivalents, initialization of machines/sources in large systems, auto-routing...

This paper describes the implementation of a real-time power system simulator based on a distributed cluster of PC desktop computers. A Real-time power system simulator based on a PC-cluster can successfully cope with the size requirements of growing power systems and the computational demands of fast transient studies. The distributed version of OVNI is used as core solver in addition to a dev...

The modeling of power transformer faults and its application to performance evaluation of a commercial digital power transformer relay are the objective of this study. A new method to build an EMTP/ATP power transformer model is proposed in this paper. Detailed modeling of the transformer relay is also discussed. The transient waveforms generated by ATP under different operating conditions are ...

The paper outlines how lightning-induced voltages (LIV) in multi-conductor overhead lines can be calculated in MODELS in the ATP-EMTP. Lossy ground effects on the radial electrical field is taken into account by the CoorayRubinstein approximation, but the overhead line itself is assumed to be lossless. This is a reasonable assumption for line lengths up to 1-3 km, depending on the ground resist...

Phase shifting transformers (PSTs) can be used to control the active power flow in a complex power transmission network by means of their capability to provide a well defined phase shift between the primary and the secondary terminals. Accurate PSTs modeling in electromagnetic transients studies can be very complex also due to the non-linearity and frequency dependency of parameters. The paper ...

This paper proposes and validates models to accurately represent STATic Synchronous Shunt COMpensators (STATCOM) in voltage and angle stability studies of powers systems. The proposed STATCOM stability models are justified based on the basic operational characteristics of this Flexible AC Transmission System (FACTS) controller for both phase and PWM control strategies. These models are first va...