Modeling of PV Based Distributed Generator Systems with Diverse Load Patterns

Published in: Innovation in Engineering, Technology and Education for Competitiveness and Prosperity: Proceedings of the 12th Latin American and Caribbean Conference for Engineering and Technology
Date of Conference: July 21-24,2014
Location of Conference: Guayaquil,Ecuador
Authors: Mehmet H. Cintuglu
Armando Altamirano
Osama A. Mohammed
Refereed Paper: #273

Abstract:

Solar based distributed generators are the most promising renewable energy technology in low voltage grid networks. Distributed generators are installed to supply local customer load demand as main purpose with a permanent percent power level of connected transformer. Load patterns show variation according to location and utilization habit of the customers such as residential, industrial, agricultural watering purpose. As a result of different load profiles, generated power and the local load demand might not match depending on the pattern. If injected power from distributed generators to the grid exceeds connected customer local load, this will result reverse power flow into MV level, which is generally forbidden situation since it introduces unexpected voltage variations and unreliable generation forecast. In order to avoid reverse power flow, the injected power to the grid by distributed generators should be controlled locally. In this paper we studied injected power control scheme to avoid reverse power flow in a part of generic Turkish distribution network consisting of MV line equivalent model, transformer, LV loads and inverter based distributed generator systems with proper protection and specifications comply with local regulatory rules and IEEE 1547 standards. Proposed reverse power flow controller method was performed based on digital computer simulation approach by using Matlab/Simulink software package.