Inspec keywords: PI control; power transformers; power control; voltage control; fuzzy control; control system synthesis

Other keywords: load voltage control strategy; grid voltage rags; HDT control system; load voltage; grid voltage change; fuzzy PI control system; voltage control system; swells; hybrid distribution transformer; transient process

Subjects: Transformers and reactors; Fuzzy control; Control of electric power systems; Voltage control; Power and energy control; Control system analysis and synthesis methods