Power Quality Enhancement in Distribution System using D-STATCOM

Aman Kumar Srivastava; Monika Dhankar

Abstract

New solutions based on power electronics have been developed to safeguard commercial and industrial clients against power quality issues on the electrical distribution system, referred to as Custom Power Products. Custom power devices are classified into three categories by their structures such as dynamic voltage regulator (DVR), distribution static compensator (STATCOM) and unified power quality compensator (UPQC).The Distribution Static Compensator (D-STATCOM), one of the custom power product, is a shunt-connected Power electronics-based device, is used for compensation of reactive power i.e. unbalance in line thus protecting the electrical system from a polluting (flicker producing) Load. The STATCOM can be used in place of a traditional static VAR Compensator and offers many advantages. This consists of three phase voltage source inverter, injection transformer, LINK IN THE D.C. The control algorithm determines the STATCOM's performance. The extraction of the current components. So, for this, there are various control algorithms for the control of STATCOM block depending on various theories and strategies like phase shift control, instantaneous PQ theory, synchronous frame theory, Adaline based theory.

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