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Download or read book FPGA-based Real-Time Simulation Platform For Power Grids Including Multiple Converters written by Ramin Mirzahosseini and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis develops an FPGA-based real-time simulation platform for power grids including multiple Power Electronic Converters (PECs) and other classical components, which in contrast to the classical systems do not include long transmission lines for mathematical decoupling of systems for efficient simulation. The presence of short transmission lines creates a large set of network equations that can not be decoupled. Handling the large admittance matrix, representing the large set of network equations, requires floating-point numerical representation which is associated with large latencies and high resource utilization in FPGAs. In addition, the presence of high switching frequency PECs imposes small simulation time-step requirement and therefore high computational burden. Accurate representation of PECs, using two-value resistor model, results in time-variant admittance matrix which also increases computational burden. This thesis proposes Reformulated Modified Nodal Analysis (RMNA) for solution of network equations to enable (i) parallelism between the simulation task of solving network equations and those of other power system component models to achieve small simulation time-steps and (ii) design of a low-latency floating-point matrix-vector multiplication hardware module to efficiently solve relatively large set of network equations associated with systems targeted in this work. An FPGA-based partitioning method is proposed to enable simulation of multiple PECs and representing power switches by two-value resistor model without significantly increasing the computational burden. This overcomes the issues associated with the existing real-time Associate Discrete Circuit (ADC) switch model, i.e., artificial switching loss and numerical oscillation. A new FPGA-based Electrical Machine (EM) Constant-Parameter-Voltage-Behind-Reactance (CPVBR) model is proposed to enable real-time simulation of different types of EMs, i.e., Induction Machine (IM), Synchronous Machine (SM) and Permanent Magnet Synchronous Machine (PMSM), under all test scenarios and regardless of their dynamic saliency and system configuration. Moreover, this thesis develops Inter-Hardware Universal Line Model (IHULM) to enable parallel simulation of distribution system, which includes short transmission lines, in the FPGA-based platform and the rest of the system in commercially available simulation platforms, e.g., RTDS. The platform developed in this work accurately simulates power grids with up to 160 nodes/outputs, four PECs, three EMs and one IHULM using a small real-time time-step of micro-second. Moreover, it features fixed-hardware design to avoid FPGA code compilation time. A model preparation script is developed to calculate the study system parameters based on the modeling approaches devised in this work.