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Design and simulation of dstatcom for power quality improvements

Authors: Yoldaş, Yeliz;

Design and simulation of dstatcom for power quality improvements

Abstract

The increased perception in power quality topics has provided important changes and improvements in power electronics devices. This devices are used to maintain and improve the power quality and reliability of distribution system and to protect customers/users against disturbances generated by other users in the network. Distribution Static Compensator (DSTATCOM) is a shunt connected power electronic device that can quickly mitigate power quality disturbances in the system. The proposed DSTATCOM is connected in shunt to 400 V test system. Simulations have been performed to illustrate the effectiveness of the DSTATCOM. The results obtained from the simulations clearly showed that the designed DSTATCOM simultaneously performs the reactive power compensation, voltage regulation, harmonic elimination, load balancing, balanced voltage sag/swell and unbalanced voltage sag mitigation. Furthermore, by connecting a delta connected inductor-capacitor-inductor (LCL) passive filter at inverter output, the high order harmonics generated by the DSTATCOM can be easily and effectively eliminated. In this thesis, a proposed DSTATCOM that protects a 300-kVA sensitive load is analyzed, modeled and simulated. The performance and efficiency of the proposed system are tested with different simulation cases by PSCAD/EMTDC program.

Güç kalitesi konusundaki artan bilinç, güç elektroniği cihazlarında önemli iyileşmeler ve değişimler sağlamıştır. Bu cihazlar şebekede diğer kullanıcılar tarafından üretilen bozukluklara karşı müşterileri/kullanıcıları korumak, dağıtım sisteminin güvenilirliliğini ve güç kalitesini iyileştirmek ve korumak için kullanılır. Dağıtım Sistemi Statik Senkron Kompanzatörü (DSSSK) sistemdeki güç kalitesi bozukluklarını hızlı bir şekilde azaltabilen paralel bağlı bir güç elektroniği cihazıdır. Önerilen DSSSK 400V test sistemine paralel bağlıdır. Simülasyonlar DSSSK'nın etkisini göstermek için gerçekleştirilmiştir. Simülasyonlardan elde edilen sonuçlar, tasarlanan DSSSK'nın eş zamanlı olarak reaktif güç kompanzasyonu, gerilim regülasyonu, harmonik eleme, dengeli gerilim düşümü/yükselmesi ve dengesiz gerilim düşümü düzeltimi yaptığını açıkça göstermektedir. Ayrıca, doğrultucu çıkışına üçgen bağlı bobin-kondansatör-bobin (BKB) pasif filtresi bağlayarak, DSSSK tarafından üretilen yüksek dereceli harmonikler kolayca ve etkin bir şekilde yok etmektedir. Bu tez çalışmasında, 300-kVA’lık bir hassas yükü koruyan DSSSK’nın analizi, modellemesi ve simülasyonu yapılmıştır. Önerilen sistemin performansı ve verimliliği PSCAD/EMTDC programında farklı simülasyon çalışmalarıyla incelenmiştir.

Bu çalışma Ç.Ü. Bilimsel Araştırma Projeleri Birimi tarafından desteklenmiştir. Proje No: MMF2013YL15.

Tez (Yüksek Lisans) -- Çukurova Üniversitesi, Adana, 2015.

xviii, 99 s. : tablo ; 29 cm.

Kaynakça (s. 89-98) var.

TEZ9652

Country
Turkey
Related Organizations
Keywords

Harmonic Elimination, Elektrik ve Elektronik Mühendisliği, Distribution Static Compensator, Reactive power compensation, Dağıtım Sistemi Statik Senkron Kompanzatörü, Gerilim Düşümü/Yükselmesi, Gerilim Regülasyonu, Voltage Regulation, Power quality, Güç Faktörü Düzeltimi, Harmonik Eleme, Voltage Sag/Swell, Power Factor Correction, Electrical and Electronics Engineering

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green