Investigation of Relationship between Voltage and Nondetection Zone of OUV/OUF of Local Islanding Detection Techniques

Yingram, Manop; Premrudeepreechacharn, S.

doi:10.7763/jocet.2014.v2.144

Cited by 9 publications

(3 citation statements)

References 11 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The experiment built islanding condition by off-grid (off switch) between the point of common coupling (PCC) and utility. Experimental results were recorded after testing reliability and accuracy [ 12 ].…”

Section: The Relationship Between Voltage and Ndz Of Ouv Of Invertmentioning

confidence: 99%

Over/Undervoltage and Undervoltage Shift of Hybrid Islanding Detection Method of Distributed Generation

Yingram

Premrudeepreechacharn

2015

The Scientific World Journal

View full text Add to dashboard Cite

The mainly used local islanding detection methods may be classified as active and passive methods. Passive methods do not perturb the system but they have larger nondetection zones, whereas active methods have smaller nondetection zones but they perturb the system. In this paper, a new hybrid method is proposed to solve this problem. An over/undervoltage (passive method) has been used to initiate an undervoltage shift (active method), which changes the undervoltage shift of inverter, when the passive method cannot have a clear discrimination between islanding and other events in the system. Simulation results on MATLAB/SIMULINK show that over/undervoltage and undervoltage shifts of hybrid islanding detection method are very effective because they can determine anti-islanding condition very fast. ΔP/P > 38.41% could determine anti-islanding condition within 0.04 s; ΔP/P < −24.39% could determine anti-islanding condition within 0.04 s; −24.39% ≤ ΔP/P ≤ 38.41% could determine anti-islanding condition within 0.08 s. This method perturbed the system, only in the case of −24.39% ≤ ΔP/P ≤ 38.41% at which the control system of inverter injected a signal of undervoltage shift as necessary to check if the occurrence condition was an islanding condition or not.

show abstract

Section: The Relationship Between Voltage and Ndz Of Ouv Of Invertmentioning

confidence: 99%

Over/Undervoltage and Undervoltage Shift of Hybrid Islanding Detection Method of Distributed Generation

Yingram

Premrudeepreechacharn

2015

The Scientific World Journal

View full text Add to dashboard Cite

show abstract

“…Passive islanding detection methods rely on the measurement of system parameters (such as the variation in the voltage, frequency, harmonic distortion or the power) that cause the inverter to control/modify the output power to meet specific conditions during islanding mode of operation [8]. The parameters vary greatly at the PCC when the system is islanded.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of passive methods for islanding detection and protection system of the inverter operation

Osmanaj

Sylejmani

Limani

et al. 2018

ELECTROTECHNICAL REVIEW

View full text Add to dashboard Cite

In this paper, we analyze the method of passive over/under voltage for protection and distribution of PV systems connected to the utility grid. The method in question is analyzed by non-detection area and based on the possibility of degradation of output power quality, which is a known weak point of this method. The analysis focuses on the worst case detection when the energy produced by the photovoltaic system is the same energy that takes the load when there is no change to the parameters at the common point of connection to the utility grid. An algorithm is proposed to solve the problem of the creation of the so-called islanding of generators connected to the grid. Simulations were conducted with Matlab Simulink software. Streszczenie. W artykule analizowano pasywną metodę detekcji pracy wyspowej z wykorzystaniem zabezpieczenia nad/pod napięciowego w przypadku systemu dystrybucyjnego zawierającego system PV. Analizowano obszary nie-wykrywania zagrożeń. Skoncentrowano się na najgorszym przypadku, w którym energia wytwarzana przez system fotowoltaiczny jest w całości pobierana przez odbiór, podczas gdy nie występują zmiany parametrów w punkcie wspólnego przyłączenia do sieci elektroenergetycznej. Przedstawiony algorytm rozwiązuje problem kryteriów dla detekcji pracy wyspowej jednostek wytwórczych przyłączonych do systemu elektroenergetycznego. Eksperymentalna analiza pasywnej metody wykrywania pracy wyspowej i zabezpieczenia falownika

show abstract

“…Os valores mínimos para ∆P e ∆Q de OUF ou OUV são determinados analiticamente pelas equações (3.6) e (3.7), definindo a ZND [4], onde Q f é o fator de qualidade, f grid é a frequência da rede elétrica, V grid é a tensão da rede elétrica e f min e f max são as frequências inferior e superior estipuladas pela norma do país [41].…”

Section: Detecção De Sub/sobre Tensão E Sub/sobre Frequênciaunclassified

Estudo e implementação de estratégias de detecção de ilhamento em inversores para sistemas fotovoltaicos de geração distribuída

Reis¹

View full text Add to dashboard Cite

Agradeço, a Deus, por ter me dado força e por iluminar meu caminho. aos meus pais Ana Lucia e Eduardo dos Reis (in memoriam) pelo amor, carinho e apoio dedicados desde o primeiro dia de minha existência. a meus irmãos André e Guilherme pelo carinho e amizade. à minha namorada, Silvia, por todo o apoio e pelo carinho e amor. ao meu orientador, professor Marcelo Gradella Villalva, com o qual tive o prazer de trabalhar durante os dois anos de mestrado. Pela oportunidade, amizade, orientação e confiança.

show abstract

Investigation of Relationship between Voltage and Nondetection Zone of OUV/OUF of Local Islanding Detection Techniques

Cited by 9 publications

References 11 publications

Over/Undervoltage and Undervoltage Shift of Hybrid Islanding Detection Method of Distributed Generation

Over/Undervoltage and Undervoltage Shift of Hybrid Islanding Detection Method of Distributed Generation

An experimental study of passive methods for islanding detection and protection system of the inverter operation

Estudo e implementação de estratégias de detecção de ilhamento em inversores para sistemas fotovoltaicos de geração distribuída

Contact Info

Product

Resources

About