N-1 Security in Optimal Power Flow Control Applied to Limited Areas
“N-1 Security in Optimal Power Flow Control Applied to Limited Areas”
G. Hug-Glanzmann and G. Andersson, Power Systems Laboratory ETZ Zurich
Important notice Copyright and all rights in this work are retained by the authors. This material may not be reposted without the explicit permission of the authors. ©2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
www.ietdl.org
Published in IET Generation, Transmission & Distribution Received on 6th March 2008 Revised on 2nd July 2008 doi: 10.1049/iet-gtd:20080112
ISSN 1751-8687
N 2 1 security in optimal power flow control applied to limited areas
G. Hug-Glanzmann G. Andersson
Power Systems Laboratory, ETH Zurich, 8092 Zurich, Switzerland E-mail: gabriela.hug@gmail.com
Abstract: Blackouts in recent years have demonstrated that a reliable and secure power system is a key component of an efficient economy. Therefore control devices such as flexible AC transmission system devices (FACTS) are placed in the system and utilised to improve the security of the system. A method to determine appropriate settings for these devices is optimal power flow control. As the area of influence of a FACTS device is usually limited, it is sufficient to include only a reduced area in the optimisation problem. Here, such an optimal power flow problem is formulated where the considered area is defined using sensitivity analysis. To include N 2 1 security as an objective, a current injection method is applied, which facilitates the determination of the system state in the case of a line outage, without having to carry out a full-load flow simulation.
1
Introduction
The overall goal of the power supply industry is to assure continuous access to
G. Hug-Glanzmann and G. Andersson, Power Systems Laboratory ETZ Zurich
Important notice Copyright and all rights in this work are retained by the authors. This material may not be reposted without the explicit permission of the authors. ©2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
www.ietdl.org
Published in IET Generation, Transmission & Distribution Received on 6th March 2008 Revised on 2nd July 2008 doi: 10.1049/iet-gtd:20080112
ISSN 1751-8687
N 2 1 security in optimal power flow control applied to limited areas
G. Hug-Glanzmann G. Andersson
Power Systems Laboratory, ETH Zurich, 8092 Zurich, Switzerland E-mail: gabriela.hug@gmail.com
Abstract: Blackouts in recent years have demonstrated that a reliable and secure power system is a key component of an efficient economy. Therefore control devices such as flexible AC transmission system devices (FACTS) are placed in the system and utilised to improve the security of the system. A method to determine appropriate settings for these devices is optimal power flow control. As the area of influence of a FACTS device is usually limited, it is sufficient to include only a reduced area in the optimisation problem. Here, such an optimal power flow problem is formulated where the considered area is defined using sensitivity analysis. To include N 2 1 security as an objective, a current injection method is applied, which facilitates the determination of the system state in the case of a line outage, without having to carry out a full-load flow simulation.
1
Introduction
The overall goal of the power supply industry is to assure continuous access to