Composite power system adequacy assessment based on postoptimal analysis

Amir SAFDARIAN; Mahmud FOTUHI FIRUZABAD; Farrokh AMINIFAR

Article Details

Composite power system adequacy assessment based on postoptimal analysis

Authors:

Amir SAFDARIAN | Mahmud FOTUHI FIRUZABAD | Farrokh AMINIFAR

Publisher:

TUBITAK

Journal:

Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 1, pp.90-106

Document Type:

Article

Publication Date:

12/2012

Document Language:

Turkish

Document ID (Org No.):

2000743381

Frequency:

Bimonthly

eISSN:

1303-6203

pISSN:

1300-0632

Abstract:

 

The modeling and evaluation of enormous numbers of  contingencies are the most challenging impediments associated with  composite power system adequacy assessment, particularly for  large-scale power systems.  Optimal power flow (OPF) solution, as a  widely common approach, is normally employed to model and analyze each  individual contingency as an independent problem.  However,  mathematical representations associated with diverse states are  slightly different in one or a few generating units, line outages, or  trivial load variations.  This inherent attribute brings a promising  idea to speed up the contingency evaluation procedure.  In this paper,  postoptimal analysis (POA), as a well-recognized technique to attack a  set of similar problems with minimal effort, is adopted to solve the  contingency OPFs.  Instead of solving all similar problems  independently, POA exploits the similarity among them and accelerates  the solving procedure.  The proposed method here derives a base case  model and obtains its respective solution.  Thereafter, the solution  associated with a contingency is determined by imposing differences  due to unit or line outages or load variation with respect to the base  case solution.  The proposed approach is applicable in both sorts of  analytical and simulation-based evaluation methods.  The Roy Billinton  test system, the IEEE reliability test system, and the IEEE 118-bus  test system are used to demonstrate the performance and efficiency of  the proposed approach.  A significant reduction in the computational  efforts is experienced.

 

The modeling and evaluation of enormous numbers of  contingencies are the most challenging impediments associated with  composite power system adequacy assessment, particularly for  large-scale power systems.  Optimal power flow (OPF) solution, as a  widely common approach, is normally employed to model and analyze each  individual contingency as an independent problem.  However,  mathematical representations associated with diverse states are  slightly different in one or a few generating units, line outages, or  trivial load variations.  This inherent attribute brings a promising  idea to speed up the contingency evaluation procedure.  In this paper,  postoptimal analysis (POA), as a well-recognized technique to attack a  set of similar problems with minimal effort, is adopted to solve the  contingency OPFs.  Instead of solving all similar problems  independently, POA exploits the similarity among them and accelerates  the solving procedure.  The proposed method here derives a base case  model and obtains its respective solution.  Thereafter, the solution  associated with a contingency is determined by imposing differences  due to unit or line outages or load variation with respect to the base  case solution.  The proposed approach is applicable in both sorts of  analytical and simulation-based evaluation methods.  The Roy Billinton  test system, the IEEE reliability test system, and the IEEE 118-bus  test system are used to demonstrate the performance and efficiency of  the proposed approach.  A significant reduction in the computational  efforts is experienced.

Article Details

Composite power system adequacy assessment based on postoptimal analysis

Authors: Amir SAFDARIAN | Mahmud FOTUHI FIRUZABAD | Farrokh AMINIFAR

Publisher: TUBITAK

Journal: Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 1, pp.90-106

Document Type: Article

Publication Date: 12/2012

Document Language: Turkish

Document ID (Org No.): 2000743381

Frequency: Bimonthly

eISSN: 1303-6203

pISSN: 1300-0632

Issues

Authors:

Amir SAFDARIAN | Mahmud FOTUHI FIRUZABAD | Farrokh AMINIFAR

Publisher:

TUBITAK

Journal:

Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 1, pp.90-106

Document Type:

Article

Publication Date:

12/2012

Document Language:

Turkish

Document ID (Org No.):

2000743381

Frequency:

Bimonthly

eISSN:

1303-6203

pISSN:

1300-0632