2024 Vol.7 Jun.N03

• Title: PLC based automation control system for reactive power optimization in distribution networks
• Name: Bhattacharyya  Cheung
• Company: Warren National University,USA
• Abstract:

  Design a PLC based automation control system for reactive power optimization in distribution networks to solve the problems of low reactive power factor and poor power quality. The system uses a programmable controller (PLC) to design a reactive power control device, which adjusts reactive power by switching capacitive reactive current through capacitor banks. When the power factor of the line provided by the distribution network dispatching automation system does not match the ideal value, the device starts the input or output control program, automatically adjusts the input and output status of the capacitor bank, and realizes the optimization control of reactive power automation. When controlling, the capacitor bank adopts a composite control criterion to determine the switching action and control the reactive power and voltage to be in an ideal state within the national standard range; And a reactive power optimization control scheme based on capacitor bank cyclic switching and zero crossing switching is adopted, using cyclic and zero crossing switching modes to ensure the capacitive reactive current of each capacitor cyclic and zero crossing switching, and to avoid switching oscillation and impulse current. After testing, under the control of this system, the power factor of the distribution network line is as high as 0.98, and the three-phase load current is balanced and fluctuated, ensuring the quality of electricity.

  
  

• Keyword: PLC control; Distribution network; Reactive power optimization; Automatic switching control; Circular switching; Zero crossing switching
• DOI: 10.12250/jpciams2024090602
• Citation form: Bhattacharyya  Cheung.PLC based automation control system for reactive power optimization in distribution networks[J]. Computer Informatization and Mechanical System,2024,Vol.7,pp.4-9

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