Load Monitoring and Modeling for Effective Realtime Volt/Var Control

Detailed load monitoring is critical for real-time Volt/Var Control (VVC) in distribution systems. Estimating the load behavior becomes even more critical in one of the common forms of VVC - Conservation Voltage Reduction (CVR). In this paper, a load monitoring and modeling method is proposed to support real-time VVC. A recursive estimation method is used to identify the parameter of the proposed load model in real-time. The proposed load model and its estimation are tested on IEEE 13 node system with detailed load modeling of 629 houses. Simulation results show that the recursive estimation method tracks the measurements well and performs better than least square method with a 5 min real-time control step.