Title :
Analysis of voltage stability in multi-infeed HVDC systems with STATCOM
Author :
Saichand, K. ; Padiyar, K.R.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
This paper presents the modelling and analysis of voltage stability at AC commutation bus in LCC (Line commutated converters) based multi-infeed HVDC system. The paper also presents the analysis of effects of various operating control modes in HVDC as well as location of disturbance on the voltage stability of the system under study. A new method of modelling the LCC converters as time varying admittance at the AC commutation bus is also presented in this paper. In this paper, the modelling of STATCOM for provision of dynamic voltage support at one of the AC buses of the HVDC system is presented. The reactive power injected by STATCOM is controlled by regulating the voltage of the AC bus to which STATCOM is connected. The case study also discusses the effects of various possible combinations of location of STATCOM and disturbance considered, on the voltage stability of the multi-infeed HVDC system.
Keywords :
HVDC power convertors; commutation; power system stability; reactive power control; static VAr compensators; voltage control; AC buses; AC commutation bus; LCC converters; STATCOM; disturbance location; dynamic voltage support; line commutated converters; multiinfeed HVDC systems; reactive power; time varying admittance; voltage regulation; voltage stability; Automatic voltage control; Circuit stability; HVDC transmission; Inverters; Power system stability; Stability analysis; HVDC; LCC (Line commutated converters); STAT-COM;
Conference_Titel :
Power Electronics, Drives and Energy Systems (PEDES), 2012 IEEE International Conference on
Conference_Location :
Bengaluru
Print_ISBN :
978-1-4673-4506-4
DOI :
10.1109/PEDES.2012.6484498
