TITLE:
A Research on Emergency DC Power Support Based on DCOI
AUTHORS:
Fan Fan, Yingmin Zhang, Xingyuan Li, Wei Ma
KEYWORDS:
DCOI; Speed Differences; EEAC
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
11,
2013
ABSTRACT: An integrated scheme of emergency DC power support which
is based on dominant center of Inertia DCOI is proposed to improve power system
transient stability. The inter-area speed differences equivalent by dominant
center of inertia alleviates the main weakness of the traditional signal which
is made of the frequencies at both sides and is represent of abnormal
information of the nonlinear dynamic behavior of the power system based on a
model in which two AC systems are connected by a HVDC Link. Sichuan Power Grid
connected with Southwest Power Grid by Deyang-Baoji HVDC project is used to
testify the method. The simulation results show that the control strategy can
significantly advance the transient stability of AC/DC system through extended
equal area criterion (EEAC).