DOI:10.1007/s40565-017-0348-2 |
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Three-stage method for intentional controlled islanding of powersystems |
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Net amount: 642 |
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Author:
Shaoxiang XU1
, Shihong MIAO1
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Author Affiliation:
1. State Key Laboratory of Advanced Electromagnetic
Engineering and Technology, Hubei Electric Power Security
and High Efficiency Key Laboratory, School of Electrical and
Electronic Engineering, Huazhong University of Science and
Technology, 1037 Luoyu Road, Wuhan 430074, China
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Foundation: |
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Abstract: |
Power system controlled islanding is an emergency
control to stop the propagation of disturbances and to
avoid blackouts. This paper presents a three-stage method for
intentional controlled islanding of power systems. It enables
to search out reasonable islanding cutsets, which have the
minimum load-generation imbalance or the minimal power
flow disruption, without low-voltage problems. In the first
stage, a self-adaptive graph simplification algorithm is proposed
to obtain a two-terminal graph as a suitable islanding
cutset search area from the original power network graph
model. In the second stage, an islanding cutset search algorithm
is designed to find all of islanding cutsets, including the
minimum load-generation imbalance cutset, in the two-terminal
graph. In the third stage, an islanding scheme checking
algorithm is developed to examine the outputs of stage two. It
uses the depth first search algorithm to determine reasonable
islanding cutsets without low-voltage problems. The IEEE
30-bus system and the IEEE 118-bus system are utilized to
demonstrate the proposed method. The simulation results
show its validity and accuracy in large-scale power systems. |
Keywords: |
Intentional controlled islanding, Islanding
cutset, Power flow tracing, Minimal power imbalance,
Minimal power flow disruption |
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Online Time:2018/07/20 |
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