TY - JOUR
T1 - Vacuum circuit breaker modelling for the assessment of transient recovery voltages
T2 - application to various network configurations
AU - Bak, Claus Leth
AU - Borghetti, Alberto
AU - Glasdam, Jakob Bærholm
AU - Hjerrild, Jesper
AU - Napolitano, Fabio
AU - Nucci, Carlo Alberto
AU - Paolone, M.
PY - 2018/3
Y1 - 2018/3
N2 - Vacuum circuit breakers (VCBs) are widely used for medium voltage applications when low maintenance, long operating life, and large number of allowable switching cycles are required. The accurate estimation of the transient recovery voltages (TRVs) associated with their manoeuvres is indispensable for both VCB sizing and insulation coordination studies of the components nearby the switching device. In this respect, their accurate modelling, which is the object of the paper, becomes crucial. In particular, the paper presents (the concept of) a VCB model and two relevant applications showing the model capabilities of simulating TRVs due to opening/closing manoeuvres, namely the switching of large electrical motors and the switching of cables collecting offshore wind farms (OWFs). Data from digital fault recorder (DFR) in a water-pumping plant and from a measurement campaign in an OWF using a high-bandwidth GPS-synchronised measurement system, respectively, are used for model validation. It is shown that the inclusion of detailed VCB models significantly improves the agreement between the measurements related to both pre- and restrikes and the corresponding simulation results obtained by using two well-known electromagnetic transient simulation environments, namely, EMTP-RV and PSCAD/EMTDC. The procedure adopted for the identification of the VCB model parameters is described.
AB - Vacuum circuit breakers (VCBs) are widely used for medium voltage applications when low maintenance, long operating life, and large number of allowable switching cycles are required. The accurate estimation of the transient recovery voltages (TRVs) associated with their manoeuvres is indispensable for both VCB sizing and insulation coordination studies of the components nearby the switching device. In this respect, their accurate modelling, which is the object of the paper, becomes crucial. In particular, the paper presents (the concept of) a VCB model and two relevant applications showing the model capabilities of simulating TRVs due to opening/closing manoeuvres, namely the switching of large electrical motors and the switching of cables collecting offshore wind farms (OWFs). Data from digital fault recorder (DFR) in a water-pumping plant and from a measurement campaign in an OWF using a high-bandwidth GPS-synchronised measurement system, respectively, are used for model validation. It is shown that the inclusion of detailed VCB models significantly improves the agreement between the measurements related to both pre- and restrikes and the corresponding simulation results obtained by using two well-known electromagnetic transient simulation environments, namely, EMTP-RV and PSCAD/EMTDC. The procedure adopted for the identification of the VCB model parameters is described.
KW - Vacuum circuit breakers
KW - Transient recovery voltages
KW - Motor inrush currents
KW - Cable inrush currents
KW - Wind farms
KW - EMTP simulations
U2 - 10.1016/j.epsr.2017.11.010
DO - 10.1016/j.epsr.2017.11.010
M3 - Journal article
SN - 0378-7796
VL - 156
SP - 35
EP - 43
JO - Electric Power Systems Research
JF - Electric Power Systems Research
ER -