Thermal stress, nuisanc e trips and other problem s may be faced because of in rush cu rrent. 2.2. Over-voltage To utilize the solar powerene rgy with high or full efficie ncy, most the PV plants are usually designe d to function near unity powe r factor.
Electrical Power System Quality By Roger C.Dugan Download Citation CopyDownload full-text PDF Read full-text Download citation Copy link Link copied Read full-text Download citation Copy link Link copied References (9) Figures (3) Abstract and Figures This paper investigates the dynamic behavior of practical distribution network with integration of photovoltaic distributed generation (PVDG).This paper also aims to access the power quality issues such as voltage variation and reactive power control, flicker voltage range as well as total demand distortion (TDD) and total harmonic distortion (THD) with large PVDG penetration.
One practical distribution network of EPRI is selected as case study with 7.5 MW PVDG. Power quality issues are investigated by modeling and simulation with Open Distribution System Simulator (OpenDSS). Investigation and observation with simulated results confirmed that the proper usage of inverter control capability should be from unity to 0.9 leading and lagging. It is concluded that large integration of PVDG may not cause any extensive voltage deformation on steady state functioning conditions of distribution system. Maximum Voltage Profile (pu) at Different Penetration Levels Power, Voltage and Harmonic Distortion for High Harmonics Injection on Sunny Day Figures - uploaded by Kyaw Myo Lin Author content All figure content in this area was uploaded by Kyaw Myo Lin Content may be subject to copyright. Discover the worlds research 17 million members 135 million publications 700k research projects Join for free Public Full-text 1 Content uploaded by Kyaw Myo Lin Author content All content in this area was uploaded by Kyaw Myo Lin on Mar 05, 2019 Content may be subject to copyright. T his p aper a lso aims to access the pow er quality issues such as voltage variation and reactive power control, flicker voltage range as we ll as total demand distortion ( TDD) and t otal har monic distortion (THD) with l arge PVDG penetration. One practical distribution n etwork of EPRI is selected as case study w ith 7.5 MW PVDG. Power quality issues are investigated by modeling a nd simulation with Open Distribution System Simulator (OpenDSS). It is conclud ed that large integration of PVDG ma y no t cause any extensive voltage deformation on steady state fu nctioning conditions of distribution system. Key words: Distribution feeder, Frequency do main simulation, OpenDSS, Power quality, PV power plant, Time series analysis, Voltage fluctuation 1. Introduction Nowaday s, the solar photovoltaic power plant become s one of the m ost prom inent rene wable dispread generatio ns. Whene ver installin g PVDGs into the distribution systems, the impact on perform ance ind ices associated with resistive lo sses, di stribution feede r l oading and power quality must be conside red. The refore, som e researche rs observed the assessment of impact of PVDGs on voltage unbalanc e and h armonic s 2-3. M. Farhoodne a et.al observed the effects o f installin g grid- conne cted PV system s on the dy namic behavio ur of distribution n etwork unde r differe nt w eather cond itions by using MATLABSIMULINK 4. However, the simulations are performed based on small-scale test system in s hort-time p eriods wi th average load data profiles. In this paper, the Open Distribution System Simulator (Open DSS) 5 deve loped by Elec tric Pow er Research Institute (EPRI) is applied to perform the simulations for analysing PVDG im pacts on powe r quality problems of distribution ne tw ork. The main objective of this research paper is to accuratel y analyse the e ffects of integrating larg e scale grid-con nected PVDG on the dynamic operation and control of the d istribution system. And the n, this paper focuses on investigating the pow er quality problems such as voltage variation and re active power control through inverter technology, voltage flicker and t otal demand distortion (TDD) and total harm onic distortion (THD) caused by t he p resenc e of high-penetrated PVDGs. Sectio n 2 explains about the impact of PVDG on distribution system. Electrical Power System Quality By Roger C.Dugan Software And PVDGThe ope n sourc e software and PVDG model ing are expressed i n section 3. Practical test system used in this paper and its parame ters are presented in section 4. Thermal stress, nuisanc e trips and other problem s may be faced because of in rush cu rrent. Over-voltage To utilize the solar powerene rgy with high or full efficie ncy, most the PV plants are usually designe d to function near unity powe r factor.
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