Active/reactive Power Environmental Redispatch To Mitigate Fossil-Fueled Thermal Power Plant Ghg Emissions In Hybrid Electricity Markets

Optimal power flows consist in a timely research topic that may contribute to mitigating the use of scarce resources in the electric power sector by "simply" and optimally adjusting its controls. In this context, this work proposes an active/reactive power environmental redispatch with the objective of reducing Greenhouse Gas (GHG) emissions by fossil-fueled thermal power plants whilst maintaining power system operational costs at equivalent levels. Thus, given an initial short-term active power dispatch for a hybrid electricity market (often cleared solely based on economical aspects), an optimal active/reactive power environmental dispatch and a Lagrangian multiplier sensitivity analysis framework is deployed to determine sequences of control adjustments that lead power system operation toward cleaner dispatching scenarios. This approach is not multi-objective; in fact, it provides independent system operators post-cleared active/reactive power redispatch trade-offs between power system operational costs and GHG emissions. Results are presented and discussed for the IEEE 30- and 57-bus test-systems, highlighting the prospects of such an active/reactive power environmental redispatch in hybrid electricity markets.