Closed-loop Testing of Distance Relay Based on IEC 61850 and RTDS

Intelligent Electronic Devices (IEDs) serve as the foundation of substation automation system. Many testing cases have discussed the performance of implementing IEC 61850 in IEDs manufactured by different vendors. However, the procedures of configuring an IED and mapping it with the power network model are not summarized. This project aims to...

Dynamic Testing of GE Multilin 869 Motor Protection Relay for Stator Inter-turn Faults

Induction motors have a significant role in every aspect of modern living. They are extensively used in every industry because of their robust construction, easy operation, controllable and adaptable features. Therefore, occurrence of faults in these machines are a major concern. The protection schemes implemented in a network plays an important...

Real-time PMU-Based dynamic line rating analysis for a 50kV distribution grid

Overhead power lines play a key role in the transmission and distribution of electrical power. Traditionally, the operating limits of these overhead lines are fixed and determined through static line rating. These limits are designed under conservative conditions such as high loads and extreme weather scenarios. However, the global energy demand...

Design optimization of a novel inter-satellite downlink for small satellites to (mega-)constellations

Low downlink data rates limit the scientific and commercial return from small satellites. Now with constellations of small satellites becoming popular, the amount of data generated in low Earth orbit will be greater than ever. A novel data downlink architecture for small satellites is investigated that uses non-geostationary orbit (mega-...

The influence of skating velocity on the short track relay exchange: Using Inertial measurement units

The relay in short track skating is a team effort with the possibility to regain strength during the race by performing an exchange with a team member. Couples can gain time and conserve kinetic energy with a well performed exchange. However, the exchange is a difficult operation. With few studies done to find out what makes a good relay...

Testing of Fast Transfer Relay by an EMTP-based Approach

Industries such as chemical companies need a continuous power supply and the fast transfer relay Siemens 7uv68 is designed to transfer frompresent feederwhich encounters a fault to an auxiliary feeder and minimizes the transient torque of the induction motors during transfer. The relay will be installed in a DOW power plant in South Tarragona,...

Design of a Snap Acting Pneumatic Relay to Reduce Air Loss in a Wafer Floating Air Film Conveyor

In the high-tech semiconductor industry floating air conveyors are used to transport and position silicon substrates. An interesting point for improvement is to limit the loss of pressurized air as conveyors are only effective at the position of the substrate.<br/>The goal of this research is to develop a local pneumatic valve, that is...

EGA Membership Card System

The E-Sports Game Arena will launch an esports cafe in the summer of 2017. At this location, the company wants to introduce membership cards to create a sense of community. The goal of the project was to explore the technological possibilities of such cards and to create a working prototype that makes use of these possibilities.<br/> <br/>At the...

ATP - EMTP Modeling of Distance Relays to Simulate Single Line to Ground Fault Performance in Transmission network

The thesis deals with the modeling and simulation of distance relays in ATP - EMTP. Transmission line which is 125.6 miles long operates at 60 Hz and 115 kV line voltages are simulated in ATP - EMTP. The first part of the thesis discusses the implementation and simulation of the ATP - EMTP model for microprocessor based mho distance relay using...

Design of Hybrid Safety relay system for Philips Instant fit LED Tubes(TLED)

Fluorescent lamp has been a very successful source of light. Installed base of TL(Tube Linear) is huge; more than 60 percent of artificial light is being generated today by fluorescent tube. However in the past few years LED lighting technology has been rapidly developed. LED (Light emitting diode) is a new technology that has become more energy...

Differential Protection Modeling of the Randstad 380 kV South Ring High Voltage Cable in ATP - EMTP

Modern transmission power networks consist mainly of High Voltage overhead lines, since the later have proven their high operational reliability. However, technological developments have made it possible to use High Voltage cables, not only in the distribution grids, but also at higher transmission voltage levels. Thus, more mixed configurations...

Combining relaying and base station coordination for improving cell-edge multi-user performance in 3GPP LTE-Advanced networks

The emphasis of this thesis work is placed on improving cell-edge multi-user performance in 3GPP LTE-Advanced networks by utilizing relaying and base station coordination technologies. Relaying is a technology for enhancing the transmissions between two locations on a radio path and base station coordination is a multi-cell processing technology...

Analysis of Protection Relay Malfunctioning in Medium Voltage Grids

The electrical power system generates and supplies electric energy to consumers and it must operate in a safe manner at all times. Despite its good performance, disturbances such as the occurrence of short circuits can always take place. Because short circuits cannot be prevented, the system must be able to recognize them and take corrective...

Future home networks: Connectivity in 60 GHz Home Networks

Currently, common frequency spectrum is densely allocated and this leads to search for alternative frequency bands. 60 GHz band attracts attention for its potential in future communication. It offers globally available, license-free, very large bandwidth for high data rate communication. At 60 GHz frequency band, severe attenuation of the...

Modeling of internal faults in three-phasethree-winding transformers for differential protection studies

The thesis describes the modeling of the internal faults in three-phase three-winding power transformer related to the differential relay protection behavior due to those faults. This transformer model is based on the mutually coupled [RL] matrix and entirely compatible with ATP/EMTP software. The model uses the real power transformer and the...

Directional relay co-ordination in ungrounded radial distribution networks using a Real-Time Digital Simulator

Theoretisch onderzoek naar de stuurarbeid van een elektro-pneumatische voorstuurklep met hittedraadmotor

Er is een theoretisch model opgesteld van de omzetting van een pulsvormig elektrisch ingangssignaal in een pneumatisch duursignaal door een hittedraadklep gekoppeld aan een pneumatisch relais. Daarna is onderzocht hoe de parameters van het model dienen te worden gekozen voor een minimaal energieverbruik per schakeling, terwijl tevens is getracht...