Transmission transformer tap changer optimisation while minimising system losses using security unconstrained Optimal Power Flow (OPF) techniques

DSpace/Manakin Repository

Show simple item record

dc.contributor.author Tuson, Paul Matthew
dc.date.accessioned 2012-07-06T08:50:07Z
dc.date.available 2012-07-06T08:50:07Z
dc.date.issued 2012-07-06
dc.identifier.uri http://hdl.handle.net/10539/11632
dc.description.abstract This dissertation investigates the feasibility of fixed tap or reduced tap transformers on the Eskom Transmission system, thereby reducing transformer failures and reducing the cost of new or replacement transformers. The main analysis uses Optimal Power Flow (OPF) techniques based on a Siemens PSS/E software platform and a minimum system loss operating point or objective function while reducing tap movements and maintaining prudent system limits but allowing shunt VAr devices to freely compensate for the reduced tapping. Various years and system conditions are analysed. The research shows that: 􀁸 135 Transmission-Distribution transformers are suitable for changing to fixed tap transformers 􀁸 160 Transmission-Distribution transformers are suitable for changing to reduced tap transformers 􀁸 80 Transmission-Distribution transformers should be left as-is 􀁸 A 5.7% reduction in system losses from 1118.4 MW to 1054.9 MW (63.5 MW) is possible as a result of an optimised system Finally it is shown that replacing some Transmission transformers with fixed-tap transformers is a more cost effective solution. The contribution of this research is two-fold: 1. to show that there is scope for Eskom System Operations to operate its system more efficiently in terms of system losses 2. to show that an OPF methodology is a practical technique to limit transformer tap movements and allow optimal VAr placement while minimising system losses en_ZA
dc.language.iso en en_ZA
dc.title Transmission transformer tap changer optimisation while minimising system losses using security unconstrained Optimal Power Flow (OPF) techniques en_ZA
dc.type Thesis en_ZA


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search WIReDSpace


Advanced Search

Browse

My Account

Statistics