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Philadelphia University
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Technical Services Department
Online Catalog - Item Information
Date:19/05/24

Publication type: Article

Title:

RPM-Based Approach to Extract Power System Steady State and Small Signal Stability Information From the Time-Domain Simulation

Author(s):

Fan,M. (Author) Ajjarapu,V. (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2011/FEB V.26 N.1
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 261 - 269

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

146551

Abstract
Recursive projection method (RPM) is investigated to extract power system steady state and small signal stability information from time-domain simulation code (TDSC). RPM takes outputs from TDSC to identify an unstable/slow invariant subspace of the full state space. On this subspace, a Newton type of method is applied to enhance convergence for unstable/slowly-converging modes. While on the complement ... Abstract URL:http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5463053&filter%3DAND%28p_IS_Number%3A5695072%29%26pageNumber%3D2

Online Catalog - Item information

Philadelphia University
Library & Information Resources

Technical Services Department
Online Catalog - Item Information
Date:19/05/24

Publication type: Article

Title:

A Novel Online Load Shedding Strategy for Mitigating Fault-Induced Delayed Voltage Recovery

Author(s):

Bai,H. (Author) Ajjarapu,V. (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2011/FEB V.26 N.1
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 294 - 304

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

146555

Abstract
This paper develops a novel online fast load shedding strategy aimed at shedding the most effective load to mitigate fault-induced delayed voltage recovery (FIDVR). Induction motor kinetic energy deviation has been shown to be identical to the integral of power imbalance. Instead of using voltage as an indicator ... Abstract URL:http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5454321&filter%3DAND%28p_IS_Number%3A5695072%29%26pageNumber%3D2

Online Catalog - Item information

Philadelphia University
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Technical Services Department
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Date:19/05/24

Publication type: Article

Title:

Optimal Allocation of Dynamic VAR Support Using Mixed Integer Dynamic Optimization

Author(s):

Tiwari,A. (Author) Ajjarapu,V. (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2011/FEB V.26 N.1
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 305 - 314

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

146556

Abstract
Dynamic security of power systems is a major concern during contingencies, especially in present environment when there is inadequate transmission line capacity and dynamic reactive power support. This paper addresses dynamic VAR allocation to ensure acceptable transient voltage performance and short-term stability against severe contingency. ... Abstract URL:http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5508308&filter%3DAND%28p_IS_Number%3A5695072%29%26pageNumber%3D2

Online Catalog - Item information

Philadelphia University
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Technical Services Department
Online Catalog - Item Information
Date:19/05/24

Publication type: Article

Title:

Development of Multilinear Regression Models for Online Voltage Stability Margin Estimation

Author(s):

Leonardi,B. (Author) Ajjarapu,V. (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2011/FEB V.26 N.1
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 374 - 383

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

146569

Abstract
This paper investigates the use of reactive power reserves (RPR) as an indicator to estimate voltage stability margin (VSM) in an online environment. The methodology relies upon the relationship between system-wide RPRs and VSM. Statistical multilinear regression models (MLRM) are utilized in order to express ... Abstract URL:http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5484523&filter%3DAND%28p_IS_Number%3A5695072%29%26pageNumber%3D2

Online Catalog - Item information

Philadelphia University
Library & Information Resources

Technical Services Department
Online Catalog - Item Information
Date:19/05/24

Publication type: Article

Title:

Sensitivity-Based Efficient Identification of Oscillatory Stability Margin and Damping Margin Using Continuation of Invariant Subspaces

Author(s):

Luo,C. (Author) Ajjarapu,V. (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2011/AUG V.26 N.3
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 1484-1492

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

146914

Abstract
Successive eigenvalue sensitivities extracted from continuation of invariant subspaces (CIS) are proposed for efficient identification of oscillatory stability margin and damping margin in power systems. Spectrum transformation-based methods are introduced to calculate the critical eigenvalues of interest for CIS initialization. ... Abstract URL:http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5688292&filter%3DAND%28p_IS_Number%3A5958775%29%26pageNumber%3D3

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Philadelphia University
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Technical Services Department
Online Catalog - Item Information
Date:19/05/24

Publication type: Article

Title:

Contingency Analysis and Identification of Dynamic Voltage Control Areas

Author(s):

Paramasivam,Magesh (Author) Dasgupta,Sambarta (Author) Ajjarapu,Venkataramana (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2015/NOV V.30 N.6
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 2974 - 2983

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

150786

Abstract
Contingency analysis has been an integral part of power system planning and operations. Dynamic contingency analysis is often performed with offline simulation studies, due to its intense computational effort. Due to a large number of possible system variations, covering all combinations in planning studies is very challenging. Contingencies must be chosen carefully to cover a wider group of possibilities, while ensuring system security. ... Abstract URL:http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7006737&filter%3DAND%28p_IS_Number%3A7175086%29

Online Catalog - Item information

Philadelphia University
Library & Information Resources

Technical Services Department
Online Catalog - Item Information
Date:19/05/24

Publication type: Article

Title:

Adaptive Online Monitoring of Voltage Stability Margin via Local Regression

Author(s):

Li,Shiyang (Author) Ajjarapu,Venkataramana (Author) Djukanovic,Miodrag (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2018/JAN V.33 N.1
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 701 - 713

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

165961

Abstract
An online voltage stability margin (VSM) monitoring approach based on local regression and adaptive database is proposed. Considering the increasing variability and uncertainty of power system operation, this approach utilizes the locality of underlying pattern between VSM and reactive power reserve (RPR) ... Abstract URL:https://ieeexplore.ieee.org/document/7912411/

Philadelphia University
Library & Information Resources

Technical Services Department
Online Catalog - Item Information
Date:19/05/24

Publication type: Article

Title:

Sensitivity Based Thevenin Index With Systematic Inclusion of Reactive Power Limits

Author(s):

Reddy Ramapuram Matavalam,Amarsagar (Author) Ajjarapu,Venkataramana (Author)

Source Journal Info.

Title:IEEE Transactions on Power Systems

Issue Number:2018/JAN V.33 N.1
Call No.:621.3105 ITP
Location: References & Periodical Hall - 2nd floor

Physical Description:

p 932 - 942

Subject Area:

Engineering

Subject Terms:

Electrical engineering

Accession Number

165983

Abstract
This paper presents proof for the relation between the Local Thevenin Index (LTI), measured at a Phasor Measurement Unit (PMU), that is used as an indicator of voltage stability, and the system operating condition. ... Abstract URL:https://ieeexplore.ieee.org/document/7920345/

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