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Heuristic algorithm for critical clearing time considering limitingcharacteristics of static var compensator(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2017年06期
Page:
725-
Research Field:
Publishing date:

Info

Title:
Heuristic algorithm for critical clearing time considering limitingcharacteristics of static var compensator
Author(s):
Jiang NingqiangWang Xiao
School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China
Keywords:
static var compensators limiting characteristics critical clearing time transient stability power systems
PACS:
TM712
DOI:
10.14177/j.cnki.32-1397n.2017.41.06.010
Abstract:
To overcome the difficulty in power system transient stability analysis due to the limiting characteristics of the static var compensator(SVC),a heuristic algorithm is proposed to determine the critical clearing time(CCT)based on the features of SVC susceptance variation during the transients caused by short-circuit.The projection of the fault-on trajectory is calculated,and the CCT along it is determined by the derivative of the capacitive susceptance.The efficiency of transient stability analysis is improved because the transient energy,controlling unstable equilibrium point and the post-fault trajectory need not to be calculated.The analysis result of a three machine system shows that,the relative error of CCT is less than 10%.

References:

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Last Update: 2017-12-31