Robust hybrid anti-islanding method for inverter-based distributed generation

Abdolrasol, Maher G. M.; Mekhilef, Saad

doi:10.1109/tencon.2010.5685901

Cited by 10 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, active islanding detection methods are based on the occurrence of disturbance on the terminal of DG, which will have a significant change when DG gets disconnected from the power grid [13]; therefore, active methods stay effective, even if there is a small power mismatch between load demand and DG capacity. The dominant active techniques are: Slip-Mode frequency Shift method (SMS) [14], Active Frequency Drift method (AFD) [4], Sandia Frequency Shift method (SFS) [15], and Sandia Voltage Shift method (SVS) [15]. The drawbacks of active methods are the reduction of power quality, and the lower speed of detection in comparison with passive methods [13].…”

Section: Introductionmentioning

confidence: 99%

“…As it can be seen, active and passive methods have their own advantages and drawbacks. Combining these two methods in order to get benefit from all the advantages, results in a new category of islanding protection techniques called hybrid anti-islanding methods [15]. Some of the recent literature focused on hybrid islanding detection techniques are: A robust hybrid islanding detection method based on the combination of current injection method as the active method, and a frequency relay, a voltage relay and the THD method as the passive method, is proposed in [15].…”

Section: Introductionmentioning

confidence: 99%

“…Combining these two methods in order to get benefit from all the advantages, results in a new category of islanding protection techniques called hybrid anti-islanding methods [15]. Some of the recent literature focused on hybrid islanding detection techniques are: A robust hybrid islanding detection method based on the combination of current injection method as the active method, and a frequency relay, a voltage relay and the THD method as the passive method, is proposed in [15]. Reference [16] combines the principles of positive feedback (active) technique, and voltage unbalance and total harmonic distortion (passive) technique as an efficient method for synchronously rotating DGs.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Hybrid Islanding Detection Method for Inverter-Based DGs Using SFS and ROCOF

Khodaparastan

Vahedi

Khazaeli

et al. 2017

IEEE Trans. Power Delivery

179

View full text Add to dashboard Cite

This paper is aimed at proposing a new hybrid method for the islanding detection of Distributed Generation (DG) units. Hybrid method operation is based on the combination of an active and a passive method, for which, Optimized Sandia Frequency Shift (SFS) method is used as the selected active method, and Rate of Change of Frequency relay (ROCOF) is used as the passive method. In order to demonstrate the effectiveness of the proposed technique on islanding detection, several simulation studies based on IEEE 1547 and UL1741 anti-islanding test requirements are carried out on a system equipped with the proposed hybrid method. The evaluation of simulation results reveals that the control system, based on the proposed hybrid algorithm, meets the DG islanding protection requirements efficiently. In other words, not only it holds all the benefits of both SFS and ROCOF, but also it removes their drawbacks by providing smaller Non Detection Zone, improved system's power quality and higher speed of response, and provides some other advantages. Moreover, it will be demonstrated that the proposed hybrid method is capable of accurately operating under multiple DG units, load switching in the grid connected mode, as well as different load quality factor conditions. Index Terms-Inverter-based distributed generation (DG), islanding detection technique, ROCOF relay, SFS method, hybrid method, negligible Non Detection Zone (NDZ), power quality improvement of system, multi DG system.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Hybrid Islanding Detection Method for Inverter-Based DGs Using SFS and ROCOF

Khodaparastan

Vahedi

Khazaeli

et al. 2017

IEEE Trans. Power Delivery

179

View full text Add to dashboard Cite

show abstract

“…The main drawback of this methods is the so called Non-Detection Zone (NDZ). In other words, passive methods are unable to detect islanding if the mismatch between the DG generated power and loads consumption in the island is small [4,6].…”

Section: Introductionmentioning

confidence: 99%

Test of anti-islanding protections according to IEC 62116: An experimental feasibility assessment

Belloni

Groppelli

Chiappa

et al. 2013

2013 48th International Universities' Power Engineering Conference (UPEC)

View full text Add to dashboard Cite

One of the main issues concerning the Inverter based Distributed Generators (DGs) is the possibility that inverters could feed parts of the public grid, even when the grid is disconnected from the main power system. Such a condition, that is called unwanted island, is potentially critical both for safety and for consumers' operations. In order to avoid unwanted islands, it's mandatory equipping the generating plant with an Interface Protection (IP) which has to detect the islanding condition and, in this case, to disconnect the generator from the public grid. Several methods for identifying island condition have been proposed, both passive and active, each one characterized by its pros and cons. The standard IEC 62116 was promulgated with the aim of regulating a test procedure to evaluate the IP effectiveness of PhotoVoltaic (PV) inverters independently from the island detection method implemented. The paper discusses the test procedure proposed by the standard IEC 62116 and presents some experimental activities developed by RSE spa, aimed at the assessment of test feasibility and effectiveness.

show abstract

“…Also, Active methods have a lower speed of detection in compare with passive methods [12]. Some commonly used active techniques are Active frequency drift (AFD), Sandia frequency shift (SFS) [13], Sandia voltage shift (SVS) [14], Slip mode frequency shift (SMS) [15] and voltage phase angle difference [16].…”

mentioning

confidence: 99%

A novel hybrid approach using sms and ROCOF for islanding detection of inverter-based DGs

Akhlaghi¹,

Sarailoo²,

Akhlaghi³

et al. 2017

2017 IEEE Power and Energy Conference at Illinois (PECI)

View full text Add to dashboard Cite

Abstract-This paper proposes a novel hybrid approach for islanding detection of inverter-based distributed generations (DG) based on combination of the Slip mode frequency-shift (SMS) as an active and rate of change of frequency (ROCOF) relay and over/under frequency relay as passive methods. This approach is utilized to force the DG to lose its stable operation and drift the frequency out of the allowed range of the frequency threshold. Performance of the proposed approach is evaluated under the IEEE 1547, UL 1741 and multiple-DG operation. The simulation results demonstrate the effectiveness of the proposed approach for detection of islanding, especially for loads with high quality factor. It operates accurately under the condition of load switching and does not interfere with the power system operation during normal condition. In other words, not only it holds the benefits of both SMS and ROCOF, but also it removes their drawbacks by having less non-detection zone and faster response.Index Terms-Constant-current controller, distributed generation (DG), islanding detection, Slip mode frequency-shift (SMS), rate of change of frequency (ROCOF) relay, inverter.

show abstract

Robust hybrid anti-islanding method for inverter-based distributed generation

Cited by 10 publications

References 16 publications

A Novel Hybrid Islanding Detection Method for Inverter-Based DGs Using SFS and ROCOF

A Novel Hybrid Islanding Detection Method for Inverter-Based DGs Using SFS and ROCOF

Test of anti-islanding protections according to IEC 62116: An experimental feasibility assessment

A novel hybrid approach using sms and ROCOF for islanding detection of inverter-based DGs

Contact Info

Product

Resources

About