A Novel Islanding Protection System for Photovoltaic Inverters

Okado, C.; Kimoto, K.; Shinohara, Hirofumi; Ichinose, Takashi

doi:10.1541/ieejpes1990.114.7-8_732

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the literature review, in particular [3][4][5][6]8,9,16], we have analyzed the most promising methodologies, both passive and active, typical for inverters. The methods that require implementing communication techniques (e.g., based on signal processing, supervisory control, etc.)…”

Section: Comparison Of Anti-islanding Methodologies and Network Analymentioning

confidence: 99%

Modeling anti-islanding protection devices for photovoltaic systems

Melnik

Borup³

2004

Renewable Energy

View full text Add to dashboard Cite

Section: Comparison Of Anti-islanding Methodologies and Network Analymentioning

confidence: 99%

Modeling anti-islanding protection devices for photovoltaic systems

Melnik

Borup³

2004

Renewable Energy

View full text Add to dashboard Cite

“…4,5 Several islanding detection techniques can be found in the literature. 1,2,4,5,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] They can be mainly classified in two groups: passive and active methods. The passive methods try to detect islanding by means of observing the evolution of the inverter output electrical variables.…”

Section: Introductionmentioning

confidence: 99%

“…2,4,5,9,13,14,16 On the other hand, the active methods disturb these variables as a way to detect islanding according to the reaction of the system. 1,2,4,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] The most commonly used passive methods are the voltage and frequency monitoring methods. These methods monitor the output voltage rms value and frequency, and activate the voltage and frequency relays when these magnitudes exceed the programmed limits.…”

Section: Introductionmentioning

confidence: 99%

“…2,[21][22][23][24] When an island occurs the frequency changes and the method increases or decreases the phase-shift in order to make the frequency drift toward values outside the trip limits. However, this method can be ineffective when the characteristics of the load supplied by the inverter interact with the method and the frequency stabilizes in a value inside the trip limits.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design methodology for the frequency shift method of islanding prevention and analysis of its detection capability

Sanchis

Marroyo

Coloma

2005

Prog. Photovolt: Res. Appl.

View full text Add to dashboard Cite

Islanding protection is one of the most important sources of discrepancy in gridconnected photovoltaic systems. Even when islanding is not very likely to happen, regulations demand the photovoltaic inverters to implement effective protection methods. Due to its several advantages, the frequency shift method of islanding prevention, commonly known as Sandia Frequency Shift, is one of the most important active methods. This method implements a positive feedback of the frequency that tends to move it outside the trip limits in case of islanding. The method shows a very high detection capability, which depends on both the values of the method parameters and the characteristics of the load that remains in the same power section after islanding. This paper develops a mathematical analysis of the Sandia Frequency Shift method and proposes a new methodology to design its parameters as a trade-off between the detection capability, which is evaluated as a function of the load characteristics, and the distortion that the method could introduce in the grid as a consequence of transitory frequency disturbances. The ability of this methodology to design the method parameters and achieve the highest detection capability is satisfactorily proved by means of both simulation and experimental results on a commercial photovoltaic inverter that implements the method once its parameters have been designed with the proposed methodology.

show abstract

A Novel Islanding Protection System for Photovoltaic Inverters

Cited by 2 publications

References 0 publications

Modeling anti-islanding protection devices for photovoltaic systems

Modeling anti-islanding protection devices for photovoltaic systems

Design methodology for the frequency shift method of islanding prevention and analysis of its detection capability

Contact Info

Product

Resources

About