Islanding detection in smart grids

Timbus, A.V.; Oudalov, Alexandre; Ho, Carl Ngai Man

doi:10.1109/ecce.2010.5618306

Cited by 131 publications

(104 citation statements)

References 22 publications

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“…In the islanding detection using the technique based in communication [2,3] a data acquisition is performed between the relays in the system in order to detect if some circuit break in the system is opened, creating an islanded system. However, this method depends of the utility infrastructure to be implemented, which makes it very complicated and expensive.…”

Section: Islanding Detectionmentioning

confidence: 99%

Analysis and computer modelling of a Rate of Change of Frequency Relay for islanding detection in the software ATPDraw

Menezes¹,

Tresso²,

Schaffer³

et al. 2024

RE&PQJ

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Abstract.Although the distributed generation is bringing many benefits to the grid, its operation is also getting even more complicated due to the many loads and generators involved into it. One important issue that must be detected as fast as possible to avoid any damage for the grid and/or the loads connected is the islanding. The paper analyses the modelling of a relay based in a passive method of islanding detection for the software ATPDraw, which is current unavailable. So we focussed in a model based in the frequency, which the rate of change of frequency relay -ROCOF -was chosen. The results show that the relay was successful to detect the islanding under various circumstances and is obeying the requisites established by the IEEE 1547.

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Section: Islanding Detectionmentioning

confidence: 99%

Analysis and computer modelling of a Rate of Change of Frequency Relay for islanding detection in the software ATPDraw

Menezes¹,

Tresso²,

Schaffer³

et al. 2024

RE&PQJ

View full text Add to dashboard Cite

show abstract

“…Furthermore, such an unsupervised system operation may entail adverse power quality and impact on the equipment and customers within the islanded area. Eventually, the electrical equipment can be damaged by out-of-phase closure occurring when, after a fault, the unwanted island is reconnected to the utility network by automatic reclosing of MV breakers without any synchronizing action [3]. For all these reasons, the adoption of an adequate protection system able to detect any islanding condition and disconnect the DGs from the isolated network is essential to ensure the safe and secure operation of LV distribution systems.…”

Section: Introductionmentioning

confidence: 99%

A New Protection System for Islanding Detection in LV Distribution Systems

2015

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Abstract:The growth of penetration of Distributed Generators (DGs) is increasing the risk of unwanted islanded operation in Low Voltage (LV) distribution systems. In this scenario, the existing anti-islanding protection systems, installed at the DG premises and based on classical voltage and frequency relays, are no longer effective, especially in the cases of islands characterized by a close match between generation and load. In this paper, a new protection system for islanding detection in LV distribution systems is proposed. The classical voltage and frequency relays in the DG interface protections are enriched with an innovative Smart Islanding Detector, which adopts a new passive islanding detection method. The aim is to keep the advantages of the classical relays while overcoming the problem of their limited sensitivity in detecting balanced islands. In the paper, to define the requirements of the anti-islanding protection system, the events causing the islanded operation of the LV distribution systems are firstly identified and classified. Then, referring to proposed protection system, its architecture and operation are described and, eventually, its performance is analyzed and validated by experimental laboratory tests, carried out with a hardware-in-the-loop technique.

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“…Hz,0.5 or 1 Hz for frequency drift [11], [49], [54]. Time period of islanding (Tthreshold) discovery is 3 seconds.…”

Section: Inter-microgrid Synchronized Measurementsmentioning

confidence: 99%

“…The frequency reference or the phase reference are the most used types of information. They have been used to identify the disconnection between the main grid and the microgrid [11], [49], [53], [54], [135].…”

Section: New Methods For Islanding Detectionmentioning

confidence: 99%

“…Islanding detection can be one of the other applications of PMUs. Although many researchers have already investigated the islanding detection techniques [49]- [51], there are recent improvements in this field using PMUs [11], [52]- [54]. They have concentrated on complete islanding detection techniques, based on phase and frequency measurements, but they have not studied the situation when only one phase of a multiphase microgrid is disconnected from the main grid.…”

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Development of Hardware in the Loop Real-Time Control Techniques for Hybrid Power Systems Involving Distributed Demands and Sustainable Energy Sources

Mazloomzadeh¹

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To handle the increased level of real-time data exchange, this dissertation develops a supervisory control and data acquisition (SCADA) system that is equipped with a state estimation scheme from the real-time data. This system is verified on a specially developed laboratory-based test bed facility, as a hardware and software platform, to emulate the actual scenarios of a real hybrid power system with the highest level of similarities and capabilities to practical utility systems. It includes phasor measurements at hundreds of measurement points on the system. These measurements were obtained from especially developed laboratory based Phasor Measurement Unit (PMU) that is utilized in addition to existing commercially based PMU's. The developed vii PMU was used in conjunction with the interconnected system along with the commercial PMU's. The tested studies included a new technique for detecting the partially islanded micro grids in addition to several real-time techniques for synchronization and parameter identifications of hybrid systems.Moreover, due to numerous integration of renewable energy resources through DC microgrids, this dissertation performs several practical cases for improvement of interoperability of such systems. Moreover, increased number of small and dispersed generating stations and their need to connect fast and properly into the AC grids, urged this work to explore the challenges that arise in synchronization of generators to the grid and through introduction of a Dynamic Brake system to improve the process of connecting distributed generators to the power grid.Real time operation and control requires data communication security. A research effort in this dissertation was developed based on Trusted Sensing Base (TSB) process for data communication security. The innovative TSB approach improves the security aspect of the power grid as a cyber-physical system. It is based on available GPS synchronization technology and provides protection against confidentiality attacks in critical power system infrastructures.

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Islanding detection in smart grids

Cited by 131 publications

References 22 publications

Analysis and computer modelling of a Rate of Change of Frequency Relay for islanding detection in the software ATPDraw

Analysis and computer modelling of a Rate of Change of Frequency Relay for islanding detection in the software ATPDraw

A New Protection System for Islanding Detection in LV Distribution Systems

Development of Hardware in the Loop Real-Time Control Techniques for Hybrid Power Systems Involving Distributed Demands and Sustainable Energy Sources

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