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Superconducting fault-current limiters are being considered as a potential technology for restricting fault current to acceptable levels without extensive and costly network asset replacement. Such an issue currently arises primarily from the connection of a distributed generation. This paper first investigates the fault studies of an active medium-voltage distribution network with several superconducting...
This paper widens the knowledge about the microgeneration transient response under faulted conditions. The paper provides the following significant contributions: Firstly, a range of microgeneration transient models have been developed in PSCAD/EMTDC and tested on a typical distribution network. Two types of technologies are considered: a small diesel engine driving a three-phase synchronous machine...
This paper introduces the concept of dynamic modelling for wide area and adaptive power system protection. Although not limited to these types of protection schemes, these were chosen due to their potential role in solving a multitude of protection challenges facing future power systems. The dynamic modelling will be implemented using a bespoke simulation environment. This tool allows for a fully...
The growing awareness of the environmental impacts of large-scale thermal generating units has stimulated interest in microgeneration that is installed within domestic or commercial premises. This paper investigates the transient response to be expected from a range of microgeneration units that could typically be connected. The paper examines the impact of fault locations, typical fault clearance...
Distributed generators (DGs) that are rated between several kVA and 250 kVA in size are increasingly being connected at the 400 V electrical distribution level. Therefore, new requirements for the traditional network protection schemes and the co-ordination between network protection and intertie protection are needed. Actual problems have been experienced relating to DG transient behaviour, thereby,...
This paper presents studies of a single-phase induction machine driven by a micro wind turbine connected to an LV distribution system within a residential dwelling. The transient associated with grid connection and both local and electrically remote network faults are presented. Based on these studies conclusions will be drawn regarding the network impacts of microgenerators using single-phase induction...
This paper comes at a time when distribution network planning for distributed generation is becoming of high importance. It proposes an analysis process chosen for examining of the impact of distributed generation on the main types of distribution networks. The main objectives are to determine the impact of distributed generation on fault level, thermal constraints, statutory voltage limits, tap changer...
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