Concept

Vacuum interrupter

Related publications (31)

Use of lightning location systems data in integrated systems for power quality monitoring

Voltage sags are one of major concerns in power quality, as they cause serious malfunction of a large number of apparatuses. There are a number of reasons for voltage sags in distribution networks: there is some evidence, however, that in electrical system ...

IEEE2002

Software for transient electromagnetic field in GIS and its applications

Michel Ianoz

Due to the turning on or off operation of the circuit breakers and the disconnected switches, a strong electromagnetic interference in gas-insulated substations (GIS) is commonly generated. The transient wave process with a very wide frequency range can ge ...

2002

Prediction of switching transient electromagnetic fields in gas-insulated substations

Michel Ianoz

Due to the opening or closing operation of circuit breakers and disconnected switches in gas-insulated substations (GIS), a very strong transient wave process can be generated along the three-phase transmission system and transient electromagnetic field ca ...

2002

Influence of corona on the voltages induced by nearby lightning on overhead distribution lines

Summary form only given as follows. A model for the calculation of lightning-induced voltages is presented with the aim of assessing the effect of corona when power distribution lines are illuminated by lightning electromagnetic fields. Corona is taken int ...

2000

Influence of corona on the voltages induced by nearby lightning on overhead distribution lines

A model for the calculation of lightning-induced voltages is presented with the aim of assessing the effect of corona when power distribution lines are illuminated by lightning electromagnetic fields. Corona is taken into account by means of dynamic capaci ...

2000

A DC hybrid circuit breaker with ultra fast contact opening and integrated gate-commutated thyristors (IGCT)

Alfred Rufer

Air-magnetic circuit breakers are widely used for short-circuit protection in DC electric railways or industrial plants. The well-known drawbacks of these breakers are mainly a slow breaking action, a short lifetime and high maintenance costs due to the de ...

2000

Enhancement of power system transient stability using superconducting fault current limiters

Bertrand Dutoit, Marten Sjöström

Transient stability investigations consist of studying the rotor oscillations of generators (electro-mechanic oscillations, 0.1-2 Hz) after the occurrence of a fault of large amplitude, e.g. short circuit. The goal is to indicate if the generators are capa ...

1999

Less impact of power failures due to substation automation

Otto Preiss

The management of power failures is a complex endeavour, which needs a diverse set of preventive and corrective measures in order to attain satisfying results. Substation Automations (SA) systems comprise, among others, an infrastructure of intelligent ele ...

1999

Protection of MV and LV networks against lightning. I. Basic information

The characteristics of lightning overvoltages initiated on overhead distribution lines vary greatly depending on the lightning stroke characteristics, the method of overvoltage generation (direct or induced), the orographic conditions (shielding effects) a ...

1997

A modular software package for the analysis of power networks and electrical drives

Jean-Jacques Simond, Alain Sapin

This paper deals with a software package for the numerical analysis in transient and steady-state modes of power electrical networks or variable speed drives with arbitrary topologies. The package is composed of a series of units, each representing a speci ...

1995

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