Power Flow
This dataset includes the system data and equivalent Distributed Energy Resource (DER) allocations for two test cases: an 11-bus system and a 240-bus radial test feeder. The 11-bus system data is based on the CIGRE Technical Report "Benchmark system for network integration of renewable and distributed energy resources," 575, 2014. The 240-bus is based on the test system described in the paper titled "A time-series distribution test system based on real utility data" by F. Bu, Y. Yuan, Z. Wang, K. Dehghanpour, and A. Kimber, 2019 NAPS Conference, 2019.
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The power flow is usually formulated by nonlinear equations and may present multiple solutions. However, most of these solutions do not represent a practical situation but are mathematical findings. Remarkably, in unbalanced multiphase systems with impedance-grounded loads, a phenomenon can occur where two or more solutions may especially show practical significance. These solutions are called operationally-stable solutions (solutions which for a given loading level the nodal voltages, currents, and losses are feasible) and may be obtained in Distribution Systems (DS).
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In this paper, a web-based application for DC Railways networks analysis is presented. The paper provides the guidelines to develop an integrated simulation framework containing different elements like server, databases, visual analytic tools using open-source software. In this case, the proposed application allows to design a DC railway feeding system and analyse the impact of the different agents like vehicles, substations, overhead feeding systems, on-board and wayside energy storage systems, etc.
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