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Improved Power Flow Algorithm for VSC-HVDC System Based on High-Order Newton-Type Method

Author

Listed:
  • Yanfang Wei
  • Qiang He
  • Yonghui Sun
  • Yanzhou Sun
  • Cong Ji

Abstract

Voltage source converter (VSC) based high-voltage direct-current (HVDC) system is a new transmission technique, which has the most promising applications in the fields of power systems and power electronics. Considering the importance of power flow analysis of the VSC-HVDC system for its utilization and exploitation, the improved power flow algorithms for VSC-HVDC system based on third-order and sixth-order Newton-type method are presented. The steady power model of VSC-HVDC system is introduced firstly. Then the derivation solving formats of multivariable matrix for third-order and sixth-order Newton-type power flow method of VSC-HVDC system are given. The formats have the feature of third-order and sixth-order convergence based on Newton method. Further, based on the automatic differentiation technology and third-order Newton method, a new improved algorithm is given, which will help in improving the program development, computation efficiency, maintainability, and flexibility of the power flow. Simulations of AC/DC power systems in two-terminal, multi-terminal, and multi-infeed DC with VSC-HVDC are carried out for the modified IEEE bus systems, which show the effectiveness and practicality of the presented algorithms for VSC-HVDC system.

Suggested Citation

  • Yanfang Wei & Qiang He & Yonghui Sun & Yanzhou Sun & Cong Ji, 2013. "Improved Power Flow Algorithm for VSC-HVDC System Based on High-Order Newton-Type Method," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-10, June.
    • Handle: RePEc:hin:jnlmpe:235316
    DOI: 10.1155/2013/235316
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