A novel approach for the reconfiguration of distribution systems considering the voltage stability margin

Mohammad Hasan HEMMATPOUR; Mohsen MOHAMMADIAN; Mohsen Rezaie ESTABRAGH

Makale detayları

A novel approach for the reconfiguration of distribution systems considering the voltage stability margin

Yazarlar:

Mohammad Hasan HEMMATPOUR | Mohsen MOHAMMADIAN | Mohsen Rezaie ESTABRAGH

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 3, pp.679-698

Belge Tipi:

Makale

Yayın Tarihi:

2/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000743294

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

In recent years, the problem of optimum reconfiguration in  distribution systems (DSs) has been a task that must be solved in an  optimal manner.  This paper presents a new approach for the optimal  reconfiguration of DSs based on a hierarchical 2-stage optimization  problem to improve the power system voltage stability margin and  reduce losses incorporating the constraints.  The mentioned problem  has been modeled as a nonlinear and multiobjective optimization  problem.  It uses the ability of the developed harmony search  algorithm (HSA) as the first stage of the proposed optimization  problem to reach the best network configuration.  This reconfiguration  algorithm starts with a radial topology by a theoretical approach that  is based on the graph concept and matroid theory.  These concepts are  used in order to propose new intelligent HSAs to form a new harmony  vector that is well dedicated to the DS reconfiguration problem.  Thus, all of the resulting individuals after forming a new harmony  vector are claimed to be feasible configurations.  Moreover, the  presented approach is valid and avoids tedious mesh checks for the  topology constraint validation.  In the second stage of the proposed approach, the voltage stability  index is calculated to evaluate the static voltage stability security  margin for each reconfiguration pattern.  Hence, a toolbox has been  developed to recognize the loadability limit of DSs based on the  Lagrangian optimization method.    Finally, the proposed method establishes a tradeoff between the  security index and power losses to reach a coordinated reconfiguration  pattern.  To demonstrate the validity of the proposed method, the  simulations are carried out on 33- and 69-bus IEEE DSs.  The proposed  method is finally compared to some previous techniques used by other  authors.  The results show a good enhancement in the security margin  and smaller power losses with considerably less computation effort.  To validate the proposed method, the results that were obtained from  the HSA are compared with the particle swarm optimization algorithm to  ascertain its effectiveness.

 

In recent years, the problem of optimum reconfiguration in  distribution systems (DSs) has been a task that must be solved in an  optimal manner.  This paper presents a new approach for the optimal  reconfiguration of DSs based on a hierarchical 2-stage optimization  problem to improve the power system voltage stability margin and  reduce losses incorporating the constraints.  The mentioned problem  has been modeled as a nonlinear and multiobjective optimization  problem.  It uses the ability of the developed harmony search  algorithm (HSA) as the first stage of the proposed optimization  problem to reach the best network configuration.  This reconfiguration  algorithm starts with a radial topology by a theoretical approach that  is based on the graph concept and matroid theory.  These concepts are  used in order to propose new intelligent HSAs to form a new harmony  vector that is well dedicated to the DS reconfiguration problem.  Thus, all of the resulting individuals after forming a new harmony  vector are claimed to be feasible configurations.  Moreover, the  presented approach is valid and avoids tedious mesh checks for the  topology constraint validation.  In the second stage of the proposed approach, the voltage stability  index is calculated to evaluate the static voltage stability security  margin for each reconfiguration pattern.  Hence, a toolbox has been  developed to recognize the loadability limit of DSs based on the  Lagrangian optimization method.    Finally, the proposed method establishes a tradeoff between the  security index and power losses to reach a coordinated reconfiguration  pattern.  To demonstrate the validity of the proposed method, the  simulations are carried out on 33- and 69-bus IEEE DSs.  The proposed  method is finally compared to some previous techniques used by other  authors.  The results show a good enhancement in the security margin  and smaller power losses with considerably less computation effort.  To validate the proposed method, the results that were obtained from  the HSA are compared with the particle swarm optimization algorithm to  ascertain its effectiveness.

Makale detayları

A novel approach for the reconfiguration of distribution systems considering the voltage stability margin

Yazarlar: Mohammad Hasan HEMMATPOUR | Mohsen MOHAMMADIAN | Mohsen Rezaie ESTABRAGH

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 3, pp.679-698

Belge Tipi: Makale

Yayın Tarihi: 2/2013

Belge Dili: Türkçe

Document ID (Org No.): 2000743294

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Mohammad Hasan HEMMATPOUR | Mohsen MOHAMMADIAN | Mohsen Rezaie ESTABRAGH

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 3, pp.679-698

Belge Tipi:

Makale

Yayın Tarihi:

2/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000743294

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632