Title :
Utility interconnection issues
Author :
Marczewski, John J.
Author_Institution :
JMEnergy Inc., Holliston, MA, USA
Abstract :
Traction load associated with AC mainline railroad electrification is often single phase supplied from a three-phase system. Additionally, the load is moving with time and produces nonconstant impacts on the supply system. Harmonics produced by propulsion systems often require filtering at the supply points, which also impact the reactive power demands of the system. Negative sequence currents and voltage unbalances are also important issues. This paper presents the overall effects of traction loads on supplying utility systems and discusses common performance criteria used to define and measure impact levels
Keywords :
electric propulsion; power harmonic filters; power supplies to apparatus; power system control; railways; reactive power; traction; voltage control; AC mainline railroad electrification; harmonic filters; harmonics; negative sequence current unbalance; negative sequence voltage unbalance; nonconstant impacts; performance criteria; propulsion systems; reactive power demands; single phase loads; supply system; traction load; utility interconnection issues; utility systems; voltage regulation; Harmonic filters; Load flow; Power demand; Power harmonic filters; Power system harmonics; Power system simulation; Propulsion; Railway electrification; Reactive power; Traction power supplies;
Conference_Titel :
Power Engineering Society Summer Meeting, 1999. IEEE
Conference_Location :
Edmonton, Alta.
Print_ISBN :
0-7803-5569-5
DOI :
10.1109/PESS.1999.784388
