Novel design methodology for C-type harmonic filter banks applied in HV and EHV networks

Sensitivity analysis of the Electrical Stresses in Mechanically Switched Capacitors with Damping Network due to Components’ Tolerances

“…Its value is normally chosen as a compromise among different properties that are strived for when designing a MSCDN. Some of them are the maximization of the filtering capacity, the avoidance of resonances and the minimization of electrical stresses [3]. Normally, the selected value of the resistance strongly varies depending on the MSCDN's ratings.…”

Optimal design of passive filters considering the effect of Steinmetz circuit resonance under unbalanced and non‐sinusoidal conditions

“…The C-type filter is actually the same high-pass filter in which a capacitor series is located with the inductor and behaves as the second-and third-order high-pass filter [21]. In fact, the series resonance of the inductor and the capacitor series branch at the fundamental frequency prevents the main component from resistive damping and leads to a decrement in the losses of the C-type filter [22][23][24]. Advantages of a C-type filter that can reduce amplitude of the impedance of parallel resonances of the system are because of the presence of dampening resistance.…”

“…Finally, the quality factor of the filters is limited to the range (10≤Q F ≤100). According to some examinations on the networks and also consideration to [3], in (23), Q C min is equal to 0.1 and Q C max is equal to 2, and in (24), Q F min is equal to 10 and Q F max is equal to 100. Also according to (13), the cost of the filter has a linear relationship with its capacitance, so as the filter capacitor becomes larger, its cost increases significantly.…”

Behaviour of Mechanically Switched Capacitors with Damping Network (MSCDN) during Energization

“…During the design phase of the MSCDN, both steady state voltage stress and losses and transients during switching of the MSCDN have to be considered. There have been many investigations with different scope conducted, using various methods for the design of the MSCDN ( [3], [4], [5], [6], [2]).…”

“…In order to analyse the transient behaviour of the MSCDN, an analytical approach as proposed by Horton et al [5] has been adopted. The obtained results have been verified by numerical simulations of the switching transients.…”