A Study on the Effective Enhancement of the Load Power Factor Using the Load Power Factor Sensitivity of Generation Cost and Integrated Costs

발전비용의 부하역률 감도와 종합비용을 활용한 효과적인 역률개선 방안 연구

The low load power factor causes various problems such as the Increase of the power loss and the voltage instability. The demand of reactive power increases continuously with the growth of active power and the restructuring of electric power companies makes the integrated management of ractive power troublesome, from which the systematic control of load power factor is required. In this paper, the load power factor sensitivity of the generation cost and integrated costs are used for determining the locations and capacities of reactive power compensation devices effectively and for enhancing the load power factor appropriately. It is shown through the application to a small-scale power system that the system power factor can be enhanced effectively and appropriately using the load power factor sensitivity and integrated costs.