Newsletters

Interview of Professor Carlo Alberto Nucci, University of Bologna/Analysis of Lightning Induced Over Voltage

Powersys has discussed the LIOV Toolbox with Mr Carlo Alberto Nucci, Full Professor, Coordinator of the Power Systems Laboratory of the Dpt of Electrical, Electronic and Information Engineering ‘Guglielmo Marconi’ at the University of Bologna

Capacitor Bank Switching

Powersys performed a capacitor bank switching study for a utility located in North America. The scope of work concerned a Medium Voltage/High Voltage 100MVA substation located at the end of a relatively long radial transmission line. A load increase is forecasted for the next years and it is planned to replace the actual capacitor bank by a 50MVAR unit to provide the additional power without a severe voltage dip.

Power System Stability Case Study

Powersys performed in 2016 a power system study for an electrical utility located in Central Africa. Following a first study performed in 2013 where some weaknesses and instabilities were highlighted, investments were made during the last few years to strengthen their

Analysis of measurement and simulation results of freight train power supply

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Analysis of measurement and simulation results of freight train power supply

Modeling of electric railway system

A model of electric railway system connected to 110 kV network was developed in order to determine power quality parameters of voltage and current. A model consists of electric railway substation and contact line feeding electric locomotives equipped with diode rectifiers. Figure 12 shows the model in EMTP^® software which is used for analysis of electromagnetic transients.

An electric railway substation consists of one 110/25 kV transformer with rated power 7.5 MVA which is connected to the transmission grid. The transformer impedance was calculated from the manufacturer data.

The Use of EMTP® in the wind energy industry

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The Use of EMTP^® in the wind energy industry

POWERSYS has discussed EMTP^® with Mr. Jair Cassoli, Electrical Engineer at Enercon. Founded in 1984 in Germany, ENERCON is a leader in the design and sale of wind turbines and recognized worldwide for reliability and performance of its direct drive generators, its high manufacturing standards and its long-term service agreements.

To date, ENERCON has installed more than 24,500 wind turbines worldwide, ranging from 500 kW to 7.5 MW, accounting for over 38.6 GW of installed capacity. ENERCON employs over 20,000 persons worldwide and has its head office in Aurich, Germany.

Application of Saturable Core Fault Current Limiters in Industrial Power Systems - Simulation Study

layout of the industrial distribution system used in simulations EMTP News

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Application of Saturable Core Fault Current Limiters in Industrial Power Systems - Simulation Study

EDF R&D and the University of Zagreb (Department of Energy and Power Systems, Faculty of Electrical Engineering and Computing) have worked together on the application of saturable core fault current limiters in industrial power systems.
They carried out a simulation study using EMTP^® and they consequently wrote a technical paper to present their work.

The Use of EMTP® by an Utility

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The Use of EMTP^® by an Utility

Powersys has discussed EMTP^® with Mr. Poujade and Mr. Deneuville who are research engineers from the R&D department of EDF (Electricité De France). EDF is the first producer and supplier of Electricity in France.

The mission of the R&D department is to help the operators of all electricity production sites to buy, put under service, maintain and troubleshoot all the electrical machines (transformers, power generators and motors).

The Use of EMTP® in the field of Railway

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The Use of EMTP^® in the field of Railway

Powersys has discussed EMTP^® with Mr. Maxime Berger, Jr. Engineer at Bombardier Transportation, the world's leading manufacturer of both planes and trains.

Mr. Berger is in the division in charge of the Product Developement.

The Use of EMTP® by a Transmission System Operator (TSO)

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The Use of EMTP^® by a Transmission System Operator (TSO)

Powersys has discussed EMTP^® with Mr. Sébastien Dennetière, engineer at French transmission system operator RTE (Réseau de transport d’Electricité).

EMTP® Events

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COURSE : Power Electronics Applications on the Grid

June 22-25, 2015 - Lille, France

Due to the increase of renewable energy and DC link, power electronic converters play a more and more important role in the AC network. This course is dedicated to engineers who already know the funding of power electronics and who want to improve their knowledge about the different converters (eg: Modular Multilevel Converter), HVDC links, renewable converters...