All Outputs (15)

A Wideband Fault Location Scheme for Active Distribution Systems (2018)
Conference Proceeding
Aboshady, F., Sumner, M., & Thomas, D. (2018). A Wideband Fault Location Scheme for Active Distribution Systems. In 2018 International Conference on Renewable Energy Research and Applications (ICRERA) (891-896). https://doi.org/10.1109/ICRERA.2018.8566780

This paper proposes a fault location technique for future distribution systems with distributed generation. The technique considers the circuit analysis at the non-fundamental frequencies that are generated when a fault occurs. To consider both induc... Read More about A Wideband Fault Location Scheme for Active Distribution Systems.

Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields (2018)
Conference Proceeding
Baharuddin, M. H., Smartt, C., Maricar, M. I., Thomas, D. W., Gradoni, G., Creagh, S. C., & Tanner, G. (2018). Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields. In 2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE) (208-213). https://doi.org/10.1109/EMCEurope.2018.8485104

A statistical approach using field-field correlation functions which is obtained from two-probe time domain measurement is used to characterize the radiation from complex devices. The time-frequency analysis provided by the measurement data has shown... Read More about Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields.

Fast fault location scheme for distribution systems based on fault transients (2017)
Conference Proceeding
Aboshady, F., Thomas, D. W., & Sumner, M. (2017). Fast fault location scheme for distribution systems based on fault transients. In IET International Conference on Resilience of Transmission and Distribution Networks (RTDN 2017) (1-6). https://doi.org/10.1049/cp.2017.0327

This paper presents a combined double-end and single-end fault locator for distribution systems. The technique lies under the impedance based category and uses the fault generated high frequency components to locate the faults. The combination of dou... Read More about Fast fault location scheme for distribution systems based on fault transients.

Per-phase controller for medium voltage full-bridge modular multilevel converters (2017)
Conference Proceeding
Noori, A., Costabeber, A., Sumner, M., & Thomas, D. (2017). Per-phase controller for medium voltage full-bridge modular multilevel converters. In International Conference on Resilience of Transmission and Distribution Networks (RTDN 2017). https://doi.org/10.1049/cp.2017.0331

This work proposes a per-phase control architecture for a fullbridge modular multilevel converter (FB-MMC) intended for medium voltage applications, such as MVDC multi-terminal distribution networks in off-shore wind farms or MVDC networks in industr... Read More about Per-phase controller for medium voltage full-bridge modular multilevel converters.

Combining fault location estimates for a multi-tapped distribution line (2017)
Conference Proceeding
Jahanger, H., Sumner, M., & Thomas, D. W. (2017). Combining fault location estimates for a multi-tapped distribution line.

Multi-tapped lines are common in integrated power systems and microgrids which supply variable loads between the main source and the main load. Adopting a cost effective and efficient method for fault location is important for fast power recovery and... Read More about Combining fault location estimates for a multi-tapped distribution line.

EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation (2017)
Conference Proceeding
Smartt, C., Basford, M., Greedy, S., Thomas, D., & Sumner, M. (2017). EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation. In Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications (1283-1287). https://doi.org/10.1109/ICEAA.2017.8065507

This paper describes the development and application of sophisticated multi-conductor cable bundle models for Spice simulation. The cable models developed include frequency dependent parameters, transfer impedance coupling and incident plane wave exc... Read More about EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation.

A double end fault location technique for distribution systems based on fault-generated transients (2017)
Conference Proceeding
Aboshady, F., Sumner, M., & Thomas, D. W. (2017). A double end fault location technique for distribution systems based on fault-generated transients.

This paper presents a fault location technique for distribution systems. It is a two end impedance based technique that uses the fault generated transients to estimate the fault distance over a broad range of frequencies. Then, curve fitting is appli... Read More about A double end fault location technique for distribution systems based on fault-generated transients.

Open source cable models for EMI simulations (2016)
Conference Proceeding
Greedy, S., Smartt, C., & Thomas, D. W. (2016). Open source cable models for EMI simulations. In IEEE Electromagnetic Compatibility Magazine (69-81). https://doi.org/10.1109/AeroEMC.2016.7504590

This paper describes the progress of work towards an Open Source software toolset suitable for developing Spice based multi-conductor cable models. The issues related to creating a transmission line model for implementation in Spice which include the... Read More about Open source cable models for EMI simulations.

Assessment of power quality in a microgrid with power electronic converters (2016)
Conference Proceeding
Ivry, P. M., Thomas, D. W., & Sumner, M. (2016). Assessment of power quality in a microgrid with power electronic converters.

This paper highlights the importance of assessing Power Quality (PQ) of microgrids using the recommended indices as stated in IEEE 519 and IEEE 1547 standards. It assesses the microgrid PQ by verifying if converter harmonics at the Point of Common Co... Read More about Assessment of power quality in a microgrid with power electronic converters.

Development and testing of an experimental power system fault demonstrator (2015)
Conference Proceeding
Rose, C. J., Thomas, D. W., Sumner, M., & Christopher, E. (2015). Development and testing of an experimental power system fault demonstrator.

In this paper a laboratory demonstrator for the study of power system faults is described. The facility has been developed in order to experimentally investigate a number of fault location and power system protection technologies developed by the aut... Read More about Development and testing of an experimental power system fault demonstrator.

Impedance sensitive STATCOM control for systems supported by renewable generation (2014)
Conference Proceeding
Rose, C. J., Sumner, M., Thomas, D. W., & Christopher, E. (in press). Impedance sensitive STATCOM control for systems supported by renewable generation.

Reactive power control is known to be an effective means of controlling voltage; however, for optimal performance, the system reactance must be known. Power systems with high re-newable energy penetration have been known to have voltage stability iss... Read More about Impedance sensitive STATCOM control for systems supported by renewable generation.

Method of efficiently predicting the conducted emissions of multiple VSCs (2014)
Conference Proceeding
Ivry, P. M., Oke, O., Thomas, D. W., & Sumner, M. (in press). Method of efficiently predicting the conducted emissions of multiple VSCs.

Various types of power converters including Voltage Source Converters (VSCs) have been known to produce conducted emissions. The net effect of simultaneously operating multiple VSCs is non-linear and this makes the prediction of the emission level mo... Read More about Method of efficiently predicting the conducted emissions of multiple VSCs.

Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers (2014)
Conference Proceeding
Rawa, M., Thomas, D. W., & Sumner, M. (in press). Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers.

The penetration of nonlinear loads on power systems increases distortion levels and can cause severe problems to power systems. Many factors affect the degree of generated harmonics including the background voltage distortion and percentage of nonlin... Read More about Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers.

Intelligent impedance based fault-location for zonal power systems (2014)
Conference Proceeding
Rose, C. J., Thomas, D. W., Sumner, M., Christopher, E., & Lopez Arevalo, S. (2014). Intelligent impedance based fault-location for zonal power systems.

A laboratory based demonstrator has been constructed to study the Active Impedance Estimation (AIE) technique as a means of locating faults on a power system. The demonstrator has been used to verify results from simulation experimentally. The AIE sy... Read More about Intelligent impedance based fault-location for zonal power systems.

Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas
Conference Proceeding
Maricar, M. I., Gradoni, G., Greedy, S., Ivrlac, M. T., Nossek, J. A., Phang, S., …Thomas, D. W. (in press). Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas.

Understanding the impact of interference upon the performance of a multiple input multiple output (MIMO) based device is of paramount importance in ensuring a design is both resilient and robust. In this work the effect of element-element interferenc... Read More about Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas.