Title :
Transient AC voltage related phenomena for HVDC schemes connected to weak AC systems
Author :
Pilotto, L.A.S. ; Szechtman, M. ; Hammad, A.E.
Author_Institution :
Centro de Pesquisas de Energia Eletrica, Rio de Janeiro, Brazil
fDate :
7/1/1992 12:00:00 AM
Abstract :
A didactic explanation of voltage-stability-associated phenomena at HVDC terminals is presented. Conditions leading to AC voltage collapse problems are identified. A mechanism that excites control-induced voltage oscillations is shown. The voltage stability factor is used to obtain the maximum power limits of AC/DC systems operating with different control strategies. Correlation to Pd×Id curves is given. Solutions for eliminating the risks of voltage collapse and for avoiding control-induced oscillations are discussed. The results are supported by detailed digital simulations of a weak AC/DC system using EMTP
Keywords :
DC power transmission; stability; transients; AC voltage collapse; AC/DC systems; EMTP; HVDC terminals; control-induced voltage oscillations; transient AC voltage; voltage-stability-associated phenomena; weak AC systems; Circuits; Control systems; Digital simulation; EMTP; HVDC transmission; Inverters; Reactive power; Rectifiers; Stability; Voltage control;
Journal_Title :
Power Delivery, IEEE Transactions on
