Hybrid Analyzing Technique for Active Islanding Detection Based on &lt;italic&gt;d&lt;/italic&gt;-Axis Current Injection

Murugesan, Suman; Murali, Venkatakirthiga; Daniel, S. Arul

doi:10.1109/jsyst.2017.2730364

Cited by 70 publications

(35 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To the best knowledge of the authors, this has resulted in it being difficult to find works dealing with the interactions between AIDM and VC-VSIs. In fact, recent literature shows the same trend as in the past [19][20][21][22][23][24]. These authors devoted efforts to enhance previously-existing AIDM, analyzing the effect under different grid faults or considering the criticality of the loads, but regularly assuming the inverter as a CC-VSI.…”

Section: Introductionmentioning

confidence: 90%

Impedance Measurement and Detection Frequency Bandwidth, a Valid Island Detection Proposal for Voltage Controlled Inverters

Llonch-Masachs¹,

Heredero-Peris²,

Chillón-Antón³

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

Anti-islanding detection methods have been part of a secure operation for distributed energy resource inverters, avoiding the creation of non-intentional energization when the mains are lost. These detection mechanisms were conceived historically for current-controlled inverters. New control possibilities have broken ground, and current- or voltage-controlled inverters are a reality; however, special attention must be paid to detection strategies when applied to the latter ones. This paper addresses two topics: it exposes the lack of effectiveness of those detection algorithms based on the voltage/frequency displacement concept under voltage-controlled inverters and evaluates the applicability limits of the others based on the impedance measurement (IM). The IM is presented as a valid mechanism to achieve the islanding detection, but the exploration of its limits drives the concept of detection frequency bandwidth (DFBW), introduced in this paper. The DFBW is suggested as a practical approach to select the proper injection frequency to measure. Therefore, an improved strategy based on the IM and DFBW is proposed to allow achieving the detection towards (non-)resonant loads considering low computational burden. The results were experimentally validated in a 90-kVA four-wire voltage-controlled inverter, offering detection times of less than 100 ms in any case.

show abstract

Section: Introductionmentioning

confidence: 90%

Impedance Measurement and Detection Frequency Bandwidth, a Valid Island Detection Proposal for Voltage Controlled Inverters

Llonch-Masachs¹,

Heredero-Peris²,

Chillón-Antón³

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…When the system is changing its state from grid connected mode to islanding state the voltage (9) and frequency (10) at PCC are changed due to small changes in active and reactive power. The proposed algorithm should be capable to sense these changes; else it leads to incorrect results.…”

Section: Proposed Hybrid Rocof Relay For Islanding Detectionmentioning

confidence: 99%

“…By injecting small disturbance at PCC for some cycles and observing the deviations in the output signal active methods will detect the islanding [7][8][9][10][11]. In the grid connected system, the system absorbs the local disturbance and considerable deviations are not observed.…”

Section: Introductionmentioning

confidence: 99%

Improved ROCOF relay for islanding detection of solar distributed generation

Reddy

Pandian

2019

IJEECS

View full text Add to dashboard Cite

<p>In recent years to meet the energy consumption demand of the world, all are working on renewable distributed generation (RDG) due to shortage of fossil fuels. The RDG systems after integrating with grid, has a disadvantage of islanding in the power system. Islanding is caused, if the RDG is supplying power to load connected due to failures in the grid. As per IEEE 1547 distributed generation (DG) interconnection standards, the islanding should be detected within 2 seconds after islanding. In this paper a hybrid islanding detection scheme is presented with rate of change of frequency (ROCOF) and reactive power injection with positive feedback. It will reduce the non detection zone (NDZ) of passive ROCOF relay to zero and can detect balanced islanding. The computer simulations are performed on MATLAB-2016. The simulations results show the effective performance of the proposed method.</p>

show abstract

“…In the grid connected system, the system absorbs the local disturbance and considerable deviations are not observed. However, more deviations are observed in the output signal if the system is islanded [13][14][15][16][17]. By observing these deviations the islanding is detected by active methods.…”

Section: Introductionmentioning

confidence: 99%

A passive islanding detection method for hybrid distributed generation system under balanced islanding

chilakala

Suresh

Anusha

et al. 2019

IJEECS

View full text Add to dashboard Cite

<p>To solve the energy consumption demand of the world and environmental problems in the future the distributed generation is considered an alternative approach. In this paper a new passive islanding detection technique was proposed for the Hybrid distributed generation (HDG) system based on changes in negative sequence voltage (NSV) and currents during an unintentional islanding. Islanding is caused in the distributed generation system due to failures in the power grid. As per distribution energy resources interconnection standards, it should be detected within 2 sec with the equipments connected to it. It is difficult to detect islanding during zero power imbalance condition. Sequence analyzer will separate the positive, negative and zero sequence components of voltages and currents from the voltages and currents obtained at the point of common coupling (PCC). During a wide range of power imbalance conditions the change in negative sequence voltage and currents are examined for islanding detection. The simulation shows that this method is free from Non detection zone, even at zero power imbalances between load and distribution generation. The computer simulations made in Matlab/ Simulink laboratory show the effectiveness of this method</p>

show abstract

Hybrid Analyzing Technique for Active Islanding Detection Based on <italic>d</italic>-Axis Current Injection

Cited by 70 publications

References 26 publications

Impedance Measurement and Detection Frequency Bandwidth, a Valid Island Detection Proposal for Voltage Controlled Inverters

Impedance Measurement and Detection Frequency Bandwidth, a Valid Island Detection Proposal for Voltage Controlled Inverters

Improved ROCOF relay for islanding detection of solar distributed generation

A passive islanding detection method for hybrid distributed generation system under balanced islanding

Contact Info

Product

Resources

About