Optimal Power Flow With Dynamic Line Rating Using Quadratically Constrained Quadratic Program Method

Abstract

This research integrates the dynamic line rating system into an optimal power flow problem. The application is to calculate the line rating using the heat balance equation based on its temperature rating. As a result, line rating that is usually static can be dynamic that makes the value higher so the system would be better. But because of this, the problem of optimal power flow becomes more difficult because of the addition of temperature variable control and heat balance equation constraint that are quite complex. The modelling also requires considering transmission losses into the Direct Current Optimal Power Flow (DCOPF) problem. This study uses a quadratically constrained quadratic program method in a direct current optimal power flow problem considering transmission losses with the integration of dynamic line rating based on the heat balance equation. Testing method are performed on IEEE 9 bus and 30 bus system. The results show that the method used can accommodate the heat balance equation and show that the integration of dynamic line rating makes the system more economical.