Analysis of system voltage profiles and harmonic filter design in the presence of time varying current injection by dynamic system models

✍ Scribed by E.B. Makram; A.A. Girgis; J. Qiu; V. Pamulapati

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 627 KB
• Volume: 28
• Category: Article
• ISSN: 0378-7796
• DOI: 10.1016/0378-7796(93)90080-x

✦ Synopsis

Dynamic nonlinear loads, such as power electronic devices, often inject time varying currents into the power network. These time varying currents may cause harmonic voltage resonance at noninteger multiples of the fundamental frequency and degrade the voltage quality and performance of harmonic filters. As the conventional frequency domain method is not valid for studying the effect of time varying currents, a dynamic system model is developed by using a symbolic mathematical program. In this paper the effects of several types of time varying current, including actual recorded waveforms, have been studied using the dynamic model. Results and conclusions of the study are also presented.