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The increasing penetration of small-scale renewable power sources into the passive distribution networks brings direct deteriorated impacts on operation of microgrids due to the lack of inertia and damping property, e.g. unexpected voltage rise, increased fault level. To this end, this study presents a novel virtual synchronous generator (VSG) based multi-loop control solution aiming to efficiently...
The DC microgrids embedded with a collection of dispersed small-scale distributed renewables and storage devices have become prevalent for power supply as a complimentary component of power utilities. In islanding DC microgrids, the energy storage system (ESS) is indispensable to maintain the power balance and voltage stability considering the dynamic loads and intermittent nature of distributed generations...
Managing distribution networks with a large number of distributed generators (DGs) is a challenging task for distributed network operators (DNOs). The proper operation of active network management requires more advanced underlying Information and Communication Technology (ICT) systems where the existing provision could not meet the necessary performance requirements due to the constraints in structure...
The increasing penetration of distributed generators into passive medium voltage (MV) power distribution networks could bring enormous challenges in network management. An ongoing UK EPSRC research project, AuRA-NMS (autonomous regional active network management system), aims to tackle this issue through devolving current centralised control functionalities at DNO (Distributed Network Operator)'s...
The traditional dynamometers consume more fuel or electric energy while working, so they not only waste energy, but also have lower dynamic performance. An AC variable-frequency power dynamometer scheme is presented based on PWM rectifier and fuzzy direct torque control (DTC) of induction motor in this paper. The dynamometer can operate in both motoring and generating states. The bidirectional flow...
The traditional dynamometers consume more fuel or electric energy while working, so they not only waste energy, but also have lower dynamic performance. An AC variable-frequency power dynamometer scheme is presented based on PWM rectifier and fuzzy direct torque control (DTC) of induction motor in this paper. The dynamometer can operate in both motoring and generating states. The bidirectional flow...
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