Study of the power system harmonic response in the presence of the Steinmetz circuit

Influence of Steinmetz circuit capacitor degradation on series resonance of networks

“…Thus, considering the usual values of the ratios S S /S L and S S /S P [6,9] and the fundamental displacement factors l L and l P , the power system harmonic admittances were studied for the following variable ranges: In Ref. [11], the normalized magnitude of the most critical Y Busk admittances (i.e., jY AAk j N , jY CCk j N , and jY ACk j N ¼ jY CAk j N ) was numerically calculated considering d c ¼ 1, and the series resonance was located as its maximum value.…”

Characterization of Harmonic Resonances in the Presence of the Steinmetz Circuit in Power Systems

“…In the above conditions, the parallel and series resonance occurring between the Steinmetz circuit capacitor and the system inductors must be located to prevent harmonic problems when the Steinmetz circuit is connected. The parallel resonance occurring between the Steinmetz circuit capacitor and the supply system inductors is widely studied in (Caro et al, 2006;Sainz et al, 2004Sainz et al, , 2005Sainz et al, , 2007. This resonance can increase harmonic voltage distortion in the presence of non-linear loads injecting harmonic currents into the system.…”

“…The problem is pointed out in (Sainz et al, 2004). In (Caro et al, 2006;Sainz et al, 2005), it is numerically and analytically characterized, respectively. In (Sainz et al, 2005), several curves are fitted numerically from the power system harmonic impedances to predict the resonance at the fifth, seventh and eleventh harmonics only.…”

“…In (Sainz et al, 2005), several curves are fitted numerically from the power system harmonic impedances to predict the resonance at the fifth, seventh and eleventh harmonics only. In (Caro et al, 2006), the resonance is analytically located from the theoretical study of the power system harmonic impedances. Finally, the analytical expressions in (Caro et al, 2006) to predict the parallel resonance frequency are expanded in (Sainz et al, 2007) to consider the influence of the Steinmetz circuit capacitor loss with respect to its design value.…”

“…In (Caro et al, 2006), the resonance is analytically located from the theoretical study of the power system harmonic impedances. Finally, the analytical expressions in (Caro et al, 2006) to predict the parallel resonance frequency are expanded in (Sainz et al, 2007) to consider the influence of the Steinmetz circuit capacitor loss with respect to its design value. The series resonance "observed" from the supply system is also studied and located in (Sainz et al, 2009a(Sainz et al, , 2009b).…”