JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2017, Vol. 47 ›› Issue (6): 39-45.doi: 10.6040/j.issn.1672-3961.0.2017.089

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Online voltage security assessment of distribution network based on WAMS Light

WANG Hui1, CHEN Lizheng2, ZHOU Gang1, LIU Bochen1, YU Yang1, LIU Gang1, FENG Zhongkui1, JIN Zongshuai2*   

  1. 1. Zibo Electric Power Bureau, State Grid Shandong Electric Power Company, Zibo 255000, Shandong, China;
    2. School of Electrical Engineering, Shandong University, Jinan 250061, Shandong, China
  • Received:2017-03-10 Online:2017-12-20 Published:2017-03-10

Abstract: With the increasing permeability of wind, photovoltaic and other intermittent power source, distribution network operation characteristics were becoming more complicated, especially in the low-voltage distribution side, the fluctuation of power output and load was more likely to cause the deviation of power grid states. A quantitative requirement of voltage security was analyzed, and an improved voltage security margin assessment method was proposed based on the binary table of voltage security contrains. The accumulation effect of voltage offsets in the evaluation window was considered, which combined the degree and duration of voltage offsets. The method was verified with the IEEE 39-bus system and actual data recorded by WAMS Light, the results showed that the proposed voltage security margin index was of good linearity and smoothness. The online assessment of voltage security was deployed with the applications of WAMS Light.

Key words: voltage security, voltage deviation, WAMS, power system

CLC Number: 

  • TM721
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