the microgrid concept provides attractive solutions for reliability enhancement of power distribution systems. normally, microgrids contain renewable-energy-based distributed generation (dg) units, which their output power varies with different environmental conditions. in addition, load demand usually changes with factors such as hourly and seasonal customer activities. hence, these issues hav...

RESÜMEE System Architecture and Component Evaluation for ESTCube-2 Electrical Power System This thesis is focused on the architecture of the electrical power system (EPS) and implementations of the various subsystems within the EPS for ESTCube-2 nanosatellite. The main goals are to establish a high level system architecture compatible with the rest of the satellite and investigate solutions for...

This paper presents two different but very important aspects of distribution network that’s voltage profile and losses. By keeping in view of these parameters this is to be decided where the distributing generating Units must be placed in distribution network. In the present and future Distributed generation (DG) has its vital importance due to more demand of electricity and renewable nature of...

1. Introduction Smart grid initiatives around the world show how much the control and protection of distribution networks is expected to change within the next few years. As the passive network with unidirectional power flow evolves into an active network with a variety of different active resources, the requirements for the primary distribution substations will also change, requiring the utili...

Small generation units connected to distribution systems can improve end-user power quality; e.g. by providing voltage support. However, the presence of distributed generation (DG) changes the radial nature of distribution systems and affects the performance of the protection system. DG can also affect duringand post-fault voltages; in addition, voltage sags are highly influenced by the type of...

despite the mythology that the global economy with its trade rules creates a ‘level playing field,’ international trade has never involved ‘level players.’ the inequalities in outcomes generated by the more powerful winning more frequently has led to innovative ideas for ex post redistribution to make the matches between the players both fairer, and in the analogy to basketball used by the auth...

In recent years, DC microgrid has attracted considerable attention of the research community because of the wide usage of DC power-based appliances. However, the acceptance of DC microgrid by power utilities is still limited due to the issues associated with the development of a reliable protection scheme. The high magnitude of DC fault current, its rapid rate of rising and absence of zero cros...

The integration of distributed sources into existing networks brings up several technical, economical and regulatory questions. In terms of physical integration, protection is one of the major issues. Therefore new protection schemes for both distributed generators (DG) and utility distribution networks have been developed in the recent years, but there are still open questions. This document i...