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This paper focuses on fault analysis of a distribution feeder which employs Solid State Transformers (SSTs) rather than magnetic transformers in order to facilitate large scale integration of Distributed Energy Resources (DERs) into the system. To estimate the fault current profile on such a feeder, the paper proposes a new method which extends the capability of conventional short-circuit analysis...
With the development of enabling power electronic devices, such as the solid state transformer (SST) [1], the concept of a novel future renewable electric energy delivery and management system [2] is raised. The Future Renewable Electric Energy Delivery and Management (FREEDM) system is a smart distribution system that can accommodate distributed renewable energy, distributed energy storage devices,...
This paper studies the volt/var control strategy for smart distribution system by formulating and solving system optimization problems. In the study, solid state transformers (SST) are used for continuous var compensation, while voltage regulators (VR) are for voltage regulation. The objectives are to minimize total system power loss while maintaining voltages along the feeder within acceptable limits...
This paper investigates the operation and protection issues on a distribution system with high penetration of residential PV systems. PV systems are smaller scale resources and therefore they have different impact on a distribution circuit than larger scale resources. The paper indeed considers a typical residential feeder and investigates PV system impacts on the system at different penetration levels...
The paper focuses on reliability assessment of power systems with wind power generation. A Monte Carlo based production cost simulation model is introduced in the paper. The model closely simulates actual system operation processes and takes system random behaviors into account. A simplified unit commitment method is created to fit the simulation for reliability evaluation purpose. The effects of...
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