A mathematical model of readjusting cost of control devices is presented and its effects on dynamic optimal reactive power dispatch (ORPD) for power systems are studied. Since the operation of reactive power dispatch will increase the investment of relative devices and maintenance loads and augment the fault probability of power systems, it is not felicitous that just minimizing the power loss without taking the readjusting costs into account in the objective function of ORPD. Results of a simulation test demonstrate that the introduction of readjusting costs of control devices to the objective function of optimal reactive power dispatch can keep a balance between cutting of the power losses and reducing of the operation times. The proposed model is reasonable since it can avoid excessive readjustment of control devices in the reactive power dispatch.
Automation of Electric Power Systems
Electric load dispatching