Parallel Connected Multi-DSTATCOM for Power Quality Improvement in Distribution System
P. V. V. Satyanarayana1, P. V. Ramana Rao2

1VP. V. V. Satyanarayana, Research Scholar, Department of EEE, Acharya Nagarjuna University, Guntur, AP, India.

2P. V. Ramana Rao, Professor & HOD, Department of EEE, Acharya Nagarjuna University, Guntur, AP, India.

Manuscript received on 02 July 2019 | Revised Manuscript received on 16 July 2019 | Manuscript Published on 23 August 2019 | PP: 359-364 | Volume-8 Issue-9S3 August 2019 | Retrieval Number: I30660789S319/2019©BEIESP | DOI: 10.35940/ijitee.I3066.0789S319

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Abstract: Sending power with good quality is the main objective of electrical transmission system. The load nature, in particular non-linear loads, makes the current at the point of common coupling (PCC) to include harmonics which further affects the other loads connected at PCC. Power quality improvement and management is an important study for the enhancement of electrical transmission and distribution systems to enrich the quality of power delivered at the utilization point. DSTATCOM is one among the FACTS controllers to improve the power quality by nullifying the effect of harmonics at PCC. This paper presents the analysis of dual DSTATCOM topology. In this each DSTATCOM is burdened such that the total compensating currents is shared between the two. Dual STATCOM topology is tested and the result analysis is shown with varying non-linear type loading conditions. Dual DSTATCOM is controlled using Instantaneous Reactive Power theory control logic. Parallel DSTATCOM has the advantage of reduction of switch rating and switching losses. The simulation work is carried out using Matlab/Simulink software.

Keywords: Reactive power, Harmonics, parallel DSTATCOM, non-linear loads.
Scope of the Article: Low-power design