Title :
Harmonic minimization in the operation of static VAR compensators for unbalanced reactive power compensation
Author :
Thukaram, D. ; Khincha, H.P. ; Ravikumar, B.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
Phase-wise unbalanced reactive power compensations are required in distribution systems for dynamic power factor correction and terminal voltage stabilization. Shunt compensators are generally used to reduce or cancel the phase-wise unbalanced reactive power (VAR) demand and to minimize the reactive power drawn from the AC supply lines. Static VAR compensators are preferred over traditional VAR compensators for this purpose. The operation of thyristor-controlled compensators at various conduction angles can be used advantageously to meet the unbalanced reactive power demands in a system. However such an operation introduces harmonic currents in to the AC system. In such cases it becomes necessary either to minimize harmonic generation internally or provide external harmonic filters. In this paper, an approach is presented for operation of VAR compensators for minimization of the effect of the harmonics using the telephone influence factor (TIF) and the total harmonic distortion factor (THD) for a typical distribution system.
Keywords :
distribution networks; harmonic distortion; power harmonic filters; reactive power; stability; static VAr compensators; thyristor applications; AC supply lines; THD; distribution systems; dynamic power factor correction; harmonic filters; harmonic minimization; shunt compensators; static VAR compensators; telephone influence factor; terminal voltage stabilization; thyristor-controlled compensators; total harmonic distortion factor; unbalanced reactive power compensation; Frequency conversion; Harmonic filters; Power factor correction; Power harmonic filters; Power system harmonics; Reactive power; Static VAr compensators; Telephony; Total harmonic distortion; Voltage;
Conference_Titel :
Power System Technology, 2004. PowerCon 2004. 2004 International Conference on
Print_ISBN :
0-7803-8610-8
DOI :
10.1109/ICPST.2004.1460015