Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (12): 1-8.doi: 10.3969/j.issn.1000-565X.2015.12.001

• Power & Electrical Engineering •     Next Articles

A Differential Setting Method for Reactive Power Interval of 110 kV Substation Gateway

Zhang Yong-jun Yi Ying-qi Chen Yan   

  1. School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2015-03-20 Revised:2015-05-21 Online:2015-12-25 Published:2015-11-01
  • Contact: 张勇军(1973-)，男，教授，博士生导师，主要从事电力系统无功优化和电压稳定、电力系统可靠性与规划等的研究． E-mail:zhangjun@scut.edu.cn
  • About author:张勇军(1973-)，男，教授，博士生导师，主要从事电力系统无功优化和电压稳定、电力系统可靠性与规划等的研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China(51377060)

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Abstract: As the reactive power control range of gateway in the traditional nine-zone automatic voltage control (AVC) strategy cannot adapt to the changes of operation modes,the correlation characteristic between the active loss and the reactive power of gateway in a 110 kV power grid is analyzed,and an optimization-oriented control strategy of the reactive power of gateway and a setting basis of the optimization-oriented network loss increment ΔP are proposed.Then,the reactive optimization interval of a 110 kV power grid gateway is discussed by using the boundary conditioned parameter,and a differential reactive power control range of gateway,which can adapt to dif- ferent operation modes,is obtained.Moreover,the relevant control range is quantitatively assessed by using an e- valuation model.Case analysis shows that the proposed method can improve the economy and safety of power sys- tems and is easy to implement.

Key words: substation, automatic voltage control, reactive power of gateway, optimization-oriented control

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