Estimation of load model parameters for harmonic analysis

Yasuhiro Hayashi*, Junya Matsuki, Kenichi Kobayashi, Norikazu Kanao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In order to devise countermcasures for harmonic disturbances and harmonic suppression in power systems effectively, it is necessary to develop a harmonic analysis approach with high accuracy. The major harmonic analysis approach is to re-create harmonic distribution in a power system model by using a simulation method. However, in order to carry out high-accuracy estimation of the harmonic distribution using the simulation method, after creating a load model which consists of several parameters associated with the measured harmonic impedance, the optimal load model parameters must be determined. So far, appropriate load model parameters have been determined by trial and error. Therefore, a systematic approach to determine the optimal load model parameters is needed to estimate the measured harmonic impedance with high accuracy. In this paper, a determination method for the optimal load model parameters to estimate the measured harmonic impedance is proposed. The proposed method is based on Particle Swarm Optimization (PSO), which is one of the optimization methods using the concept of swarm intelligence. In order to check the validity of the proposed method, the load model parameters estimated by the proposed method are evaluated using test data and field data of Hokuriku Electric Power Co.

Original languageEnglish
Pages (from-to)44-53
Number of pages10
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number2
Publication statusPublished - 2008 Jul 30
Externally publishedYes


  • Harmonic analysis
  • Harmonic impedance
  • Load model
  • Model parameters
  • Optimization method
  • PSO

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Estimation of load model parameters for harmonic analysis'. Together they form a unique fingerprint.

Cite this