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Voltage stability preventive and emergency‐preventive control using VIPI sensitivity
Author(s) -
Takehara Arisa,
Tanaka Yoshiyuki,
Iwamoto Shinichi
Publication year - 2003
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.10128
Subject(s) - control theory (sociology) , sensitivity (control systems) , fault (geology) , electric power system , voltage , contingency , preventive maintenance , engineering , control (management) , ac power , reliability engineering , power (physics) , computer science , electrical engineering , electronic engineering , linguistics , physics , quantum mechanics , artificial intelligence , seismology , geology , philosophy
Recently, power systems have become larger and more complicated, and the rate of occurrence of constant power loads has increased. Under a situation like this, concerns about voltage instability phenomena have been raised. Therefore, in addition to the conventional local voltage control, the necessity of a global on‐line voltage control scheme has risen. In this paper, we propose a method of on‐line voltage stability control including preventive and emergency‐preventive controls to retain voltage stability even if a severe fault occurs. According to the result of contingency analysis for severe faults, we consider operation of control equipment as preventive control. And in the case that the fault seems severe still after preventive control, we consider load curtailment as emergency‐preventive control. When we select the control equipment and loads to curtail, we use voltage stability index VIPI sensitivity. And we determine the amount of control and load curtailment using Optimal Power Flow calculation. The effectiveness of the proposed method is verified by simulations using a 28‐bus system. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 143(4): 22–30, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10128