Power Analysis of Hvdc Cigre Benchmark System

May 5th, 2015
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This assignment is based on the CIGRE HVDC benchmark system and deals with understanding and simulating this system in PSCAD/EMTDC. The focus is on the rectifier station of the CIGRE system which has been idealized and simulated in PSCAD. The AC-side real and reactive power and DC-side power corresponding to the firing angle from 0 to 180 degrees has been calculated and plotted.

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Power Analysis of Hvdc Cigre Benchmark System1Power Analysis of CIGRE HVDC Benchmark System Rectifier Station Haroon Rashid, M.Eng Student, University of Toronto, Department of Electrical and Computer Engineering, ECE 1055 2013 Assignment #1 AbstractThis assignment is based on the CIGRE HVDC benchmark system and deals with understanding and simulating this system in PSCAD/EMTDC. The focus is on the rectifier station of the CIGRE system which has been idealized and simulated in PSCAD. The AC-side real and reactive power and DC-side power corresponding to the firing angle from 0 to 180 degrees has been calculated and plotted. Furthermore, the power balance between the AC and DC-side of the converter has been explained. Index Terms Converter, EMTDC, HVDC, PSCAD, Real power, Reactive powerconsidering a large inductor as load on the converter dc side so that the current remains unidirectional and constant. The 12 pulse converter in the system has been designed by connecting two 6-pulse Graetz bridge blocks in series. The two transformers are modeled as one with grounded Wye-Wye connection and the other with grounded Wye-Delta connection. This connection causes a 300 phase shift between the two 6-pulse converters. However, the current in the two converters remains the same since they are in series. III. TECHNICAL WORK PREPARATION A. Electrical NetworkI. NOMENCLATURE ea, eb, ec Line Voltages vd Instantaneous voltage Vd Average voltage ELN

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