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Connection of Distributed Generation brings about a need to manage operation of distribution networks in a way that is more active. In order to allow for this change, DNOs need to devise strategies of how to manage generator outputs so to facilitate connection of renewable resources and maximize use of network assets. The paper will look into different techniques that allow for this type of operation...
Electrical Distribution Systems (EDS) are facing ever-increased complexity due, in part, to fast growing consumer demands and the integration of large amounts of distributed energy resources. The conventional operation modes need to be adapted to the significant changes. With advanced Information and Communication Technology (ICT) infrastructure and sophisticated new functionalities for energy management,...
Based on a brief overview about the developments in EVs worldwide, a general classification for EV developments is presented. Starting from a proposed classification of EV several initiatives undertaken in Chile are described and analyzed. Special characteristics of the Chilean energy supply and resources are identified and used for an analysis of opportunities and challenges for the integration of...
Since North American Electric Reliability Council (NERC) issued the new control performance standard (CPS) in 1997, this standard has become the major paradigm of operating principle for load frequency control among the interconnection systems in North America. Based on the interconnected structure, NERC's CPS is to define the permissible distribution of areas' frequency deviations, and to limit areas'...
The subject paper discusses important impacts of distributed resources on distribution networks and feeders. These include capacity, line losses, voltage regulation, and central system support (such as volt/var control via central generators and substation) as the number, placement and penetration levels of distributed resources are varied. Typically, the impacts of distributed resources on the distribution...
Generation disruption is associated with poor quality of power as it causes both frequency and voltage reductions and at its severity, hampers reliability of supply to the customers. Improving power quality and reliability (PQR) may become the key benefit of micro-grid if its generation adequacy is properly addressed at the planning stage. Again, higher reliability level requires system reinforcements,...
Summary form only given: Frequency is an important indicator for the quality of electric power. Accurate spectral decompositions rely much on the correct identification of frequencies of the measured signals. An efficient procedure that includes a high-resolution Prony-based method in conjunction with the down-sampling technique for harmonics and interharmonics detection of the measured power signal...
The Eastern Interconnection frequency governing characteristic, sometimes called Beta, has been tracked by one of the authors for a period of more than 15 years. While there are some errors inherent to the process followed, we believe that the errors do not obscure the overall trend. We have found that Beta has been declining and has reached a level of approximately 25 MW/mHz. This has important implications...
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