A Review: High Voltage Transmission System

Abstract

As the demand of electricity increasing day by day we cannot dependent on the conventional power system like: long distance distributed generating stations as well as complex & heavily loaded transmission and distribution network. High Voltage Direct Current (HVDC) transmission systems have a very important role in power system. Without proper study of HVDC system obtaining an accurate mathematical model of the system is not possible and without proper modeling Power transmitted in a HVDC system cannot be calculated. Power transmitted through the HVDC system is depends upon the efficiency of the controller as well as the converter station. Traditionally PID controllers are employed for rectifier pole current control and inverter side excitation control. This paper is the review of the HVDC system covers up the introductory part of fundamentals of the HVDC system. Due to the growing demand for electrical power at load centers and attentiveness of electrical generation at a scattered manner, a number of high capacity long distance HVDC systems are needed and also shouled be planned to achieve various advantages. As the advancement done in power electronics field going on , HVDC system will be more attractive and reliable.