Voltage Versus Reactive Current Model For Dispatch and Control

Abstract

This paper derives a reactive current model for voltage/reactive dispatch and control which the authors believe is more suitable for corrective action than conventional reactive power models. The new model is based on the concept of real and reactive current which reduces the influence of the scalar bus voltages on the sensitivity coefficients of the model. Load versus voltage characteristics are incorporated in the model. Model coefficients for a thirty bus test case are compared with those obtained from the B" coefficients of the decoupled load flow. A simplified method for calculating the new model coefficients is also presented.