Development of a programmable protection relay test system by Dann, L. R.

Get full text

Photovoltaic based distributed generation power system protection

Subjects: “…Protective relaying system…”
Get full text

Implementation of wide area protection system (WAPS) for electrical power system smart transmission grids by Tetteh, Bright

“…Transitioning to a smart grid influences the protection schemes of the power system, as the smart grid is to leverage distributed energy resources (DERs) using distributed generation (DG) units and allow for bi-directional flow of power and information. …”
Get full text

An investigation into the importance of considering protection performance during power system out-of-step conditions by Van Eyssen, Juanita

“…The performance of power system protection is affected by out-of-step conditions in that system. …”
Get full text

Protection-based Distributed Generation Penetration Limits on MV feeders - Using Machine Learning by Nxumalo, Emmanuel

“…Grid integration of DGs brings about protection issues. Current protection systems were not designed for bi-directional power flow, thus the protective devices in the network lose their ability to perform their main functions. …”
Get full text

The protection of high-voltage shunt capacitor banks by Van der Toorn, Sean

Get full text

Metering and adaptive protection for a microgrid with distributed generation by Buque, Claudio

“…The main objective of this project is to develop an adaptive relaying system that will protect the microgrid both in connected and isolated modes. …”
Get full text

Application of evolutionary algorithms for optimal directional overcurrent relay coordination by Stenane, Ndabeni Moses

Get full text

A new method of utilising stability study results in applying out-of-step protection to allow observability of rotor angle unstable conditions by Van Eyssen, Juanita

“…Power system rotor-angle unstable conditions may cause undesired operation of distance relays, resulting in the unnecessary switching of lines. …”
Get full text

Application of IEC61850 protocol to implement peer-to-peer communication on General Electric (GE) relays : evaluation of IEC61850 performance by Moerane, Christina Matankiso

Get full text

The Nigerian history machine and the production of Middle Belt historiography by Suleiman, Samaila

“…I see these processes as a kind of "history machine", defined as the interconnected system of social technologies through which the Nigerian state defines the discursive limits of the nation by appropriating, packaging and relaying discrete ethnic histories as Nigerian history in specific national cultural institutions such as archives and museums. …”
Get full text

Neuromuscular junction endplate morphology, acetylcholine receptor aggregation and accessory protein co-localisation during regeneration of a skeletal muscle crush injury by Faulmann, T. S.

Get full text

Novel approaches to an automated decision support system for on-farm management of internal parasites of small ruminants

Get full text

Resource allocation optimisation in heterogeneous cognitive radio networks

Get full text

CubeSat flight software development with limited access to satellite hardware by Slabber, Dirk Andre

Get full text

Current transformers transient response modelling using electromagnetic transient program (EMTP) by Chuthi, Noel Nelson Stima

“…Current transformers are considered eyes for power system protection. Behaviours of protection systems depend largely on information fed to them by instrument transformers. …”
Get full text

Subsynchronous resonance in series compensated networks with high penetration of renewable energy sources by Chikohora, Tinashe Edward

“…The future work involves analysis of SSR in other RES and how SSR protection can be incorporated in protection relays using a filtering method based on the prony analysis.…”
Get full text

Exploring the uptake of genetically modified white maize by smallholder farmers: the case of Hlabisa, South Africa by Mahlase, Mankurwana H

“…The government should try to move away from the idea that farmers need to scale up production through using modern varieties. A better approach would be the strengthening of appropriate support and extension services for South African smallholder farmers who use various maize systems. …”
Get full text

The interaction of acidification and warming on the South African abalone, Haliotis midae, and the potential for mitigation in aquaculture by Lester, Nina Catherine

“…Ambient seawater retained natural pH and temperature variability and acidified seawater was offset to natural pH variability using CO2/O2 diffusion and a data-logger-relay system to incorporate local-scale variability of seawater in the abalone farm, where this experiment was based. …”
Get full text

Duality derived topological model of single phase four limb transformers for GIC and DC bias studies by Borrill, Leslie David

“…Saturated transformers pose problems for power system operators since they can cause harmonics, transformer heating, mal-operation of protection relays, generator heating and vibration, and consume a large reactive power that can cause voltage collapse. …”
Get full text