TY - CONF
T1 - Load modelling influence on voltage stability assessment in distribution systems. Part I: Stability index and critical power for a single-line system
AU - Augugliaro, Antonino
AU - Riva Sanseverino, Eleonora
AU - Dusonchet, Luigi
AU - Mangione, Stefano
AU - Ippolito, Mariano Giuseppe
AU - Favuzza, Salvatore
PY - 2006
Y1 - 2006
N2 - The single-line equivalent model is commonly used forvoltage stability studies in both distribution andtransmission systems. Referring to a single-line system,in the companion paper [1] the authors presented thetheoretical aspects of voltage stability related to the loadcharacteristics. In particular, expressions of the stabilityindex for constant power, constant impedance andconstant current loads, singularly and in all the possiblecombinations have been obtained. This index indicateshow far the load node is from its voltage collapse point,allowing the maximum load power beyond whichvoltage collapse takes place to be evaluated. In thispaper a simple method to evaluate the parameters whichdefine the single-line equivalent system of a radialdistribution network is presented, allowing to extent toit the expressions of the stability index previouslyfound. Finally, the results of a detailed analysis of theinfluence of load models on the voltage stability of arealistic network, obtained with differentmethodologies, are reported for comparison anddiscussed.
AB - The single-line equivalent model is commonly used forvoltage stability studies in both distribution andtransmission systems. Referring to a single-line system,in the companion paper [1] the authors presented thetheoretical aspects of voltage stability related to the loadcharacteristics. In particular, expressions of the stabilityindex for constant power, constant impedance andconstant current loads, singularly and in all the possiblecombinations have been obtained. This index indicateshow far the load node is from its voltage collapse point,allowing the maximum load power beyond whichvoltage collapse takes place to be evaluated. In thispaper a simple method to evaluate the parameters whichdefine the single-line equivalent system of a radialdistribution network is presented, allowing to extent toit the expressions of the stability index previouslyfound. Finally, the results of a detailed analysis of theinfluence of load models on the voltage stability of arealistic network, obtained with differentmethodologies, are reported for comparison anddiscussed.
UR - http://hdl.handle.net/10447/4555
M3 - Other
SP - 1
EP - 6
ER -