Premium
Development of advanced generator excitation control regulator (PSVR) for improving voltage stability of a bulk power transmission system
Author(s) -
Michigami Tsutomu,
Onizuka Naganori,
Kitamura Satoshi
Publication year - 1991
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391110508
Subject(s) - voltage regulator , limiter , generator (circuit theory) , electric power system , control theory (sociology) , voltage , ac power , engineering , limit (mathematics) , voltage regulation , compensation (psychology) , electric generator , voltage optimisation , power (physics) , electrical engineering , computer science , physics , control (management) , mathematics , psychology , mathematical analysis , quantum mechanics , artificial intelligence , psychoanalysis
Earlier generator excitation control systems were based on AVR control of generator terminal voltage. This system cannot accommodate reactive power up to the facility limit even when the power system voltage decreases to the limit for stable operation. An attempt was made to develop an advanced excitation control system (PSVR) to achieve higher constant sending end voltage of power stations. The intent was to apply the system to the generator connected to a 500‐kV system which contributes most effectively to the voltage stability of a bulk power transmission system. This PSVR produces higher control gains than the AVR, and the following functions were adopted: (1) AVR gain reduction circuit; (2) phase compensation circuit; and (3) damping improvement by enlarging the limiter of the PSS. In addition, various functions were provided, e.g., voltage slope characteristics to balance the reactive power of adjacent generators and PSVR output and terminal voltage limiter to stabilize the generator operation. Before application to a real system, a transient response test was performed by combining the PSVR and a generator simulator to verify the damping improvement and stability of the voltage control.