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Improved Reactive Current Detection Method of SVG

Author

Listed:
  • Xueliang Wei

    (College of Geophysics and Information Engineering, China University of Petroleum-Beijing, Beijing 100000, China)

  • Guorong Zhu

    (School of Automation, Wuhan University of Technology, Wuhan 430000, China)

  • Jianghua Lu

    (School of Automation, Wuhan University of Technology, Wuhan 430000, China)

  • Wenjing Li

    (School of Automation, Wuhan University of Technology, Wuhan 430000, China)

  • And Erjie Qi

    (School of Automation, Wuhan University of Technology, Wuhan 430000, China)

Abstract

The static VAR generator (SVG) is an important device in flexible AC transmission systems (FACTS) for the development of smart grids. Based on the basis principle of SVG and instantaneous reactive power theory, the conventional i p –i q and dq methods have a certain error when the three phase voltages are unbalanced. In this paper, the current detection algorithm is improved in cases of three-phase power asymmetry by using the fundamental positive-sequence reactive current instead of the voltage as the input of phase locked loop (PLL). So the problems caused by unbalanced three-phase voltages could be avoided. In addition, a moving average filter is designed to improve the performance of the detection accuracy and dynamic response. Experiments verify the correctness and effectiveness of the proposed scheme.

Suggested Citation

  • Xueliang Wei & Guorong Zhu & Jianghua Lu & Wenjing Li & And Erjie Qi, 2017. "Improved Reactive Current Detection Method of SVG," Energies, MDPI, vol. 10(9), pages 1-11, September.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:9:p:1374-:d:111472
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    Cited by:

    1. Bryan, Mark & Bryce, Andrew & Rice, Nigel & Roberts, Jennifer & Sechel, Cristina, 2022. "Exploring mental health disability gaps in the labour market: the UK experience during COVID-19," Labour Economics, Elsevier, vol. 78(C).
    2. Patel, Leila & Graham, Lauren & Chowa, Gina, 2020. "Evidence of non-economic indicators as markers of success for youth in youth employability programs: Insights from a South African study," Children and Youth Services Review, Elsevier, vol. 118(C).

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