Maximising Voltage Support in Distribution Systems by Distributed Generation

An T Le, M. Kashem, M. Negnevitsky, G. Ledwich
2005 TENCON 2005 - 2005 IEEE Region 10 Conference  
Rapidly increasing in the demand of electricity along with recently advances in distributed generation (DG) technologies have sparked a new interest in utilisation of DG sources. However, there are a number of technical issues regarding to the installation of DG, since DG connection significantly affects existing network configuration and operation, especially for system with high level of DG penetration. To achieve maximum voltage support from DG utilisation, methodologies related to DG
more » ... nt and DG operation are developed in this paper. Technique to optimise voltage improvement by effectively injecting active and reactive power of DG is developed based on voltage sensitivity of lines. An index has been developed to obtain optimal or near optimal placement of DG for maximum voltage improvement in a distribution feeder. Simulation studies are conducted on 16-bus, 32-bus and 69-bus radial test systems to verify the developed techniques and results are reported ABSTRACT Implementation of Distributed Generation (DG) can improve power quality and reliability, and guarantee continuity of power supply. This paper addresses the issue of continuity of power supply especially for isolated communities. A part of a network can be electrically isolated from the main grid when the grid fails to supply power due to a fault in the network or unavailability of power generation. In this paper, a mini hydro-wind hybrid power system is considered, and operation and control of the hybrid system during connecting it with the grid as well as its operation in the isolated condition are investigated. The system behaviour and DG responses are also examined. Islanding operation is the most sensitive and problematic operation in power systems. Simulation has been conducted with PSCAD/EMTDC on a hypothetical test system for different scenarios and results are presented.
doi:10.1109/tencon.2005.300840 fatcat:dgeh2kmavjg6li7cb2qvoykgna