Mixed power flow analysis using AC DC models

S. Kim, T. J. Overbye

Research output: Contribution to journalArticlepeer-review


Steady-state power flow analysis for large-scale networks requires substantial computation because of the extensive interconnections among power systems. Traditionally, network equivalent techniques have been used to reduce computational demby eliminating the external system. These techniques, then, cannot reflect changes in the external system. This study presents a mixed approach with ac dc power flow models for power flow analysis to decrease computational complexity capture variations in the external system. A high level of accuracy in the targeted central part of the system is achieved using the detailed ac model. The less detailed dc model is used to reduce computational requirements still reflect changes in the external system. Case studies with the IEEE 118-bus system are provided to compare performance among the proposed, the ac the dc models.

Original languageEnglish (US)
Pages (from-to)1053-1059
Number of pages7
JournalIET Generation, Transmission and Distribution
Issue number10
StatePublished - Oct 2012

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Mixed power flow analysis using AC DC models'. Together they form a unique fingerprint.

Cite this