Modeling and Simulation of HVDC and HVAC Transmission Line

This paper focuses on modeling and simulation of HVDC and HVAC transmission system. The planning, design and operation of power system requires the detailed study of various options and prediction of the system performance. The analysis of HVDC and HVAC system requires the development of appropriate system models. In general, the system models are nonlinear and time varying with power electronics controllers, the control action is at discrete times and sampled data models have been suggested. HVDC simulators have been used for studies in real time involving actual converter controls. Recent advances in digital signal processing technology and applications of parallel processing techniques have resulted in speeding up computations and carrying out simulation in real time. This has led to the development of Real Time Digital Simulators which are expected to replace physical simulators. The system models are constructed from assembling the component models and identifying the interfaces between the various components. In this paper, we will primarily concentrate on the modelling and simulation of HVDC and HVAC system and hence will be discussed briefly. This entire system and control mechanisms are modelled in MATLAB/SIMULINK environment.