APPLICATION OF FUZZY LOGIC FOR CONTROLLING REACTIVE POWER COMPENSATION DEVICES IN DISTRIBUTION NETWORKS

Abstract

<p>This&nbsp;paper&nbsp;addresses&nbsp;the&nbsp;problem&nbsp;of&nbsp;improving&nbsp;voltage&nbsp;regulation&nbsp;in&nbsp;110/10&nbsp;kV&nbsp;distribution&nbsp;networks.&nbsp;The&nbsp;limitations&nbsp;of&nbsp;conventional&nbsp;control&nbsp;methods&nbsp;under&nbsp;multiparameter&nbsp;and&nbsp;nonlinear&nbsp;operating&nbsp;conditions&nbsp;are&nbsp;analyzed,&nbsp;and&nbsp;the&nbsp;necessity&nbsp;of&nbsp;coordinated&nbsp;control&nbsp;of&nbsp;transformers&nbsp;equipped&nbsp;with&nbsp;on-load&nbsp;tap&nbsp;changers&nbsp;(OLTCs)&nbsp;and&nbsp;reactive&nbsp;power&nbsp;compensation&nbsp;devices&nbsp;is&nbsp;substantiated.&nbsp;An&nbsp;intelligent&nbsp;control&nbsp;algorithm&nbsp;based&nbsp;on&nbsp;fuzzy&nbsp;logic&nbsp;is&nbsp;developed,&nbsp;in&nbsp;which&nbsp;voltage&nbsp;deviation&nbsp;and&nbsp;its&nbsp;rate&nbsp;of&nbsp;change&nbsp;are&nbsp;used&nbsp;as&nbsp;the&nbsp;main&nbsp;input&nbsp;variables.&nbsp;The&nbsp;control&nbsp;model&nbsp;is&nbsp;developed&nbsp;using&nbsp;the&nbsp;Mamdani&nbsp;fuzzy&nbsp;inference&nbsp;system&nbsp;and&nbsp;Gaussian&nbsp;membership&nbsp;functions.&nbsp;Simulation&nbsp;results&nbsp;demonstrate&nbsp;that&nbsp;the&nbsp;proposed&nbsp;approach&nbsp;reduces&nbsp;voltagedeviations,&nbsp;decreases&nbsp;unnecessary&nbsp;OLTC&nbsp;tap&nbsp;operations,&nbsp;and&nbsp;optimizes&nbsp;the&nbsp;reactive&nbsp;power&nbsp;compensation&nbsp;process.&nbsp;The&nbsp;developed&nbsp;method&nbsp;contributes&nbsp;to&nbsp;improving&nbsp;the&nbsp;stability&nbsp;and&nbsp;energy&nbsp;efficiency&nbsp;of&nbsp;power&nbsp;supply&nbsp;systems.</p>