A Hybrid Islanding Detection Method Based on the Rates of Changes in Voltage and Active Power for the Multi-Inverter Systems

Seyedi, Masoumeh; Taher, Seyed Abbas; Ganji, Babak; Guerrero, Josep M.

doi:10.1109/tsg.2021.3061567

Cited by 59 publications

(43 citation statements)

References 31 publications

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“…Voltage stability of test system under study for different faults like LG, LLG, and LLLG also studied and uniqueness of proposed method is shown in Figure 20 as compared to available methods in Refs. [1,12,15] and [18‐20]. Voltage variations during LG as Figure 20A and those are damp out as before as 4 seconds with proposed ISD.…”

Section: Resultsmentioning

confidence: 89%

“…Active power 'P', reactive power 'Q' (as given in refs. [10,27]) at PCC is obtain from relation (1) if 'V' is voltage and 'f' is frequency.

P = \frac{P^{2}}{R}; Q = V^{2} ((), \frac{1}{ωL} - italicωC)

Voltage variation (VV) and frequency variation (FV) at PCC are having maximum and minimum limits 19,20 and those are denoted as V max , V min , f max , and f min . These limits 10 are obtained from relations (2), (3).…”

Section: Test System Under Studymentioning

confidence: 99%

“…Improved islanding detection method for a grid‐connected inverter with intermittent bilateral, 14,15 reactive power variation of energy system is given. Grid impedance unbalanced condition based on dual frequency and active frequency 16‐18 harmonic current injection islanding detection technique is given for both grid‐connected mode and islanded mode 19,20 to detect a correct island state of network. Unbalanced impedance conditions are used for identification of frequency deviations and hence ISD state of the DG from main electric grid has been confirmed.…”

Section: Introductionmentioning

confidence: 99%

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Variable converter Pulse Island test in integrated distributed generation of electrical energy system

Reddy¹

2021

Int Trans Electr Energ Syst

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Summary Many issues are arising during the operation like interruption, disorder, and uncertainty in energy systems. One of the situations is islanding and that is required to protect humans and converter devices, those are working in interconnected electrical energy system environment. Variable converter pulse (VCP) method is proposed to identify the islanding detection (ISD) with rate of change of under/over voltage and rate of change of under/over frequency. Adaptive ISD algorithm is developed for proper tuning of VCP and used to identify ISD events in integrated utility grid. When a network is extended by means of new small‐scale energy systems that is, distributed generation (DG) and operating with main grid network, the possibility of pre‐existence of ISD data is also reconsidered for generating trip signal to isolate DG. In this paper, updating VCP‐based control as function of change in voltage and frequency at point of common coupling (PCC) with island events and non‐island events. Number of pulses and those are variable during island conditions and updated control vector to meet an objective of proposed ISD method. Especially multiple DG connected to PCC is also addressed in proposed method.

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Section: Resultsmentioning

confidence: 89%

“…Active power 'P', reactive power 'Q' (as given in refs. [10,27]) at PCC is obtain from relation (1) if 'V' is voltage and 'f' is frequency.

P = \frac{P^{2}}{R}; Q = V^{2} ((), \frac{1}{ωL} - italicωC)

Section: Test System Under Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Variable converter Pulse Island test in integrated distributed generation of electrical energy system

Reddy¹

2021

Int Trans Electr Energ Syst

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“…The drawback of these methods is that their NDZ is very large in which the detection of islanding is impossible since passive IDMs cannot recognize any islanding occurrence disturbed signal. 17 Some of the passive IDMs used for islanding detection are rate of change of frequency (ROCOF), 18,19 voltage unbalance and harmonic distortion, 20 rate of change of output power (ROCOP) of DG, [21][22][23] transient index value (TIV), 24 intrinsic time decomposition (ITD), 25 and rate of change of phase angle difference (ROCPAD). 26 To overcome the drawbacks of active and passive IDMs, another method known as hybrid IDM have been developed by researchers by combining different active and passive IDMs or sometimes combined these two methods with artificial intelligence and signal classifier based IDMs.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid islanding detection technique for distribution network considering the dynamic behavior of power and load

Jhuma

Mekhilef

Mubin

et al. 2021

Circuit Theory & Apps

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Nowadays, distributed generation (DG) has become an indispensable part for meeting the growing power demand in electrical power generation and distribution. However, one of the drawbacks of DG is unintentional islanding phenomena, which has become a safety issue for both human and equipment connected to the system. To prevent this hazardous condition, according to IEEE 1547 standards, this islanding condition must be detected within 2 s. This paper proposed an approach to develop a hybrid islanding detection method (IDM) to prevent the damages caused by this islanding condition. The proposed hybrid IDM is a combination of three different IDMs, two passive and one active; that is, rate of change of active power (ROCOAP) and rate of change of reactive power (ROCORP) are passive IDMs where load connecting strategy (LCS) is active. To differentiate islanding conditions with similar occurrences, different case studies are taken into account with photovoltaic (PV) and synchronous generator (SG) working as distributed generators on PSCAD/EMTDC platform. The simulation results confirm that proposed IDM is more favorable compared to other IDMs due to simplicity and fast islanding detection time when its performance is tested on the 11-kV Malaysian distribution system for various cases.

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Microgrid Islanding Detection Using Travelling Wave Based Hybrid Protection Scheme

Gupta¹,

Gangolu²

2022

Lecture Notes in Electrical Engineering

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A Hybrid Islanding Detection Method Based on the Rates of Changes in Voltage and Active Power for the Multi-Inverter Systems

Cited by 59 publications

References 31 publications

Variable converter Pulse Island test in integrated distributed generation of electrical energy system

Variable converter Pulse Island test in integrated distributed generation of electrical energy system

Hybrid islanding detection technique for distribution network considering the dynamic behavior of power and load

Microgrid Islanding Detection Using Travelling Wave Based Hybrid Protection Scheme

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