Optimal Placement of Dynamic Var Sources by Using Empirical Controllability Covariance
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Authors
Qi, Junjian
Huang, Weihong
Sun, Kai
Kang, Wei
Subjects
nonlinear system, optimal placement
determinant
fault-induced delayed voltage recovery (FIDVR)
mesh adaptive direct search
Controllability
dynamic var sources
empirical controllability covariance
nonlinear optimization
NOMAD
voltage collapse
determinant
fault-induced delayed voltage recovery (FIDVR)
mesh adaptive direct search
Controllability
dynamic var sources
empirical controllability covariance
nonlinear optimization
NOMAD
voltage collapse
Advisors
Date of Issue
2017
Date
2017
Publisher
IEEE
Language
Abstract
In this paper, the empirical controllability covariance
(ECC), which is calculated around the operating region of
a power system, is applied to quantify the degree of controllability
of system voltages under specific dynamic var source locations.
An optimal dynamic var source placement method addressing
fault-induced delayed voltage recovery (FIDVR) issues is further
formulated as an optimization problem that maximizes the determinant
of ECC. The optimization problem is effectively solved by
the NOMAD solver, which implements the Mesh Adaptive Direct
Search algorithm. The proposed method is tested on an NPCC
140-bus system and the results show that the proposed method
with fault specified ECC can solve the FIDVR issue caused by
the most severe N-1 contingency with fewer dynamic var sources
than the Voltage Sensitivity Index (VSI) based method. The
proposed method with fault unspecified ECC does not depend
on the settings of the contingency and can address more FIDVR
issues than VSI method when placing the same number of SVCs
under different fault durations. It is also shown that the proposed
method can help mitigate voltage collapse.
Type
Article
Description
The article of record as published may be found at http://ieeexplore.ieee.org/document/7450656/
Series/Report No
Department
Applied Mathematics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability
Oak Ridge National Laboratory under the MOVARTI project
NSF CURENT Engineering Research Center
Naval Research Laboratory
Oak Ridge National Laboratory under the MOVARTI project
NSF CURENT Engineering Research Center
Naval Research Laboratory
Funder
EEC-1041877
DE-AC02-06CH11357
Job order RAJH6
DE-AC02-06CH11357
Job order RAJH6
Format
10 p.
Citation
Qi, Junjian, Weihong Huang, Kai Sun, and Wei Kang. "Optimal placement of dynamic var sources by using empirical controllability covariance." IEEE Transactions on Power Systems 32, no. 1 (2017): 240-249.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.