Analysis of voltage regulation and network support technologies

[摘要] ENGLISH ABSTRACT:Recent advances in semiconductor device development pushed a large number of networkdevices onto the market. These devices can solve network problems more effectively andeconomically than ever before. Network planners need tools to analyse and implement suchdevices to help solve the largest network problem in South Africa: voltage regulation. Ruralnetworks experience the majority of voltage-regulation problems in South Africa. Thenetworks are long sub-transmission and reticulation networks and are modelled by twogeneric networks, namely a radial network and a two-source ring network. The equationsdescribing voltage regulation for the generic networks are developed and implemented inPSAT, a software analysis tool. The voltage regulation for two case studies that represent thetwo generic networks are analysed. Four generic network devices are defined and variouscontrol methods for these devices are developed to solve the network problem. The aim ofPSAT is to help the network planner to quickly evaluate a number of possible solutions and tochoose the best solution for further studies. This is demonstrated with the aid of the casestudies. PSAT provides a sturdy platform on which future developments, such as stabilityanalyses, can be built. However, PSAT can already function as a stand-alone analysis tool tosolve voltage regulation as a network problem.

[发布机构] Stellenbosch University