New modelling, analysis and computation techniques needed for power system control centres

Abstract

In this paper the new modelling, analysis and computation techniques needed in the coming generation of electric power system control centres are outlined. The motivation is to provide better utilization of the power system. This means better economy, which requires more elaborate optimization, with acceptable security, which requires more accurate analysis of the system behaviour. At present, the optimization available is advancing from not considering system limits (economic dispatch) to taking into account the steady-state constraints (optimal power flow), while analysing the system is limited to its steady-state behaviour (static security analysis). The addition of dynamic analysis (transient, small perturbation, and voltage stabilities) is desperately needed but remains a challenge. The calculation of these security limits and their reflection into the optimization are also significant challenges. The effects of the coming deregulatory operational environment further adds to the optimization complexity.