TY - CHAP
T1 - Component-based aggregate load models for combined power flow and harmonic analysis
AU - Collin, A. J.
AU - Acosta, J. L.
AU - Hayes, B. P.
AU - Djokic, S. Z.
PY - 2010
Y1 - 2010
N2 - Aggregate load models traditionally used for steady state analysis of power systems are based on standard constant impedance/current/power representation of static load component, with induction motor representation of dynamic load component. These traditional load models cannot accurately represent characteristics of non-linear power electronic loads, the impact of local distributed generation (DG) on the aggregate load demand, or the effects of demandmanageable loads. Furthermore, the assessment of the contribution of non-linear loads and inverter-interfaced DG to the flow and propagation of harmonic currents is usually not possible using the traditional aggregate load models. This paper uses a component-based approach to build improved aggregate load models that are capable of preserving full information on electrical characteristics of aggregated load, enabling to use the same load models for both the analysis of power flows and voltage profiles, and analysis of harmonics. Furthermore, by modelling aggregate system load as a composition of general load categories, it is possible to identify the exact portion of available demand-manageable load in the aggregate demand, and then investigate the actual effects of the controlled changes in demand on system performance. The developed load models are implemented in two "sister papers" that accompany this one, where they are combined with the models of small/large DG to perform steady state analysis of network performance (power flows, voltage profiles, overloading of system components, harmonic analysis and a simple case of demand-side management).
AB - Aggregate load models traditionally used for steady state analysis of power systems are based on standard constant impedance/current/power representation of static load component, with induction motor representation of dynamic load component. These traditional load models cannot accurately represent characteristics of non-linear power electronic loads, the impact of local distributed generation (DG) on the aggregate load demand, or the effects of demandmanageable loads. Furthermore, the assessment of the contribution of non-linear loads and inverter-interfaced DG to the flow and propagation of harmonic currents is usually not possible using the traditional aggregate load models. This paper uses a component-based approach to build improved aggregate load models that are capable of preserving full information on electrical characteristics of aggregated load, enabling to use the same load models for both the analysis of power flows and voltage profiles, and analysis of harmonics. Furthermore, by modelling aggregate system load as a composition of general load categories, it is possible to identify the exact portion of available demand-manageable load in the aggregate demand, and then investigate the actual effects of the controlled changes in demand on system performance. The developed load models are implemented in two "sister papers" that accompany this one, where they are combined with the models of small/large DG to perform steady state analysis of network performance (power flows, voltage profiles, overloading of system components, harmonic analysis and a simple case of demand-side management).
KW - Aggregate load model
KW - Component-based load model
KW - Current/voltage harmonics
KW - Demand side management
KW - Exponential load model
KW - Generic load model
KW - Load modelling
KW - Polynomial load model
KW - Total harmonic distortion
UR - https://www.scopus.com/pages/publications/79952035521
U2 - 10.1049/cp.2010.0901
DO - 10.1049/cp.2010.0901
M3 - Chapter
AN - SCOPUS:79952035521
SN - 9781849193191
T3 - IET Conference Publications
BT - 7th Mediterranean Conference and Exhibition on Power Generation, Transmission, Distribution and Energy Conversion, MedPower 2010
T2 - 7th Mediterranean Conference and Exhibition on Power Generation, Transmission, Distribution and Energy Conversion, MedPower 2010
Y2 - 7 November 2010 through 10 November 2010
ER -