Title :
Comparative Studies of Transient and Steady State Analysis for a Typical 765kV/400kV EHV Transmission System in Indian Power System
Author :
Thukaram, D. ; Khincha, H.P. ; Shyamala, P.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore
Abstract :
This paper describes an approach for the analysis and design of 765 kV/400 kV EHV transmission system which is a typical expansion in Indian power grid system, based on the analysis of steady state and transient over voltages. The approach for transmission system design is iterative in nature. The first step involves exhaustive power flow analysis, based on constraints such as right of way, power to be transmitted, power transfer capabilities of lines, existing interconnecting transformer capabilities etc. Acceptable bus voltage profiles and satisfactory equipment loadings during all foreseeable operating conditions for normal and contingency operation are the guiding criteria. Critical operating strategies are also evolved in this initial design phase. With the steady state over voltages obtained, comprehensive dynamic and transient studies are to be carried out including switching over voltages studies. This paper presents steady state and switching transient studies for alternative two typical configurations of 765 kV/400 kV systems and the results are compared. Transient studies are carried out to obtain the peak values of 765 kV transmission systems and are compared with the alternative configurations of existing 400 kV systems.
Keywords :
load flow; overvoltage; power grids; power system transients; power transmission faults; 400 kV; 765 kV; EHV transmission system; Indian power grid system; bus voltage; exhaustive power flow analysis; satisfactory equipment loading; steady state analysis; transient over voltage; Iterative methods; Load flow analysis; Power grids; Power system analysis computing; Power system interconnection; Power system transients; Steady-state; System analysis and design; Transient analysis; Voltage control; Line loadability; Power Transfer Capability; Switching over voltages; Voltage stability;
Conference_Titel :
Power Electronics, Drives and Energy Systems, 2006. PEDES '06. International Conference on
Conference_Location :
New Delhi
Print_ISBN :
0-7803-9772-X
Electronic_ISBN :
0-7803-9772-X
DOI :
10.1109/PEDES.2006.344306