The Influence of Supply Voltage Phase Angle on the Transient Current Generated on Transformer Energization

Distributed Generation (DG) has changed the power generation system to small-scale instead of large-scale generation. The demanding issue with the interconnection of DG is the detection of unintended islanding in a network. Several methods proposed in the literature show drawbacks such as high non-detection zones (NDZ) and higher tripping time. In this paper, the IEEE 13 bus distribution network with DGs like wind and solar power plants is integrated at two buses. Islanding is detected by utilizing data from a micro-synchrophasor located at the distribution grid and the DG. The micro-synchrophasor-based unintended islanding detection algorithm is based on parameters such as voltage, rate of change of voltage, frequency, rate of change of frequency, voltage phase angle difference and the rate of change of the voltage phase angle difference between the utility and the islanded grid. The proposed islanding detection algorithm discriminates between islanding and non-islanding conditions and is highly efficient under zero power mismatch conditions. The proposed method has null NDZ and satisfies the IEEE 1547 standard for DG tripping time. The effectiveness of the proposed IDM was verified when there are multiple DGs in the islanded grid. Also, the proposed method does not require additional hardware as it can be incorporated in digital relays with synchrophasor functionality.

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Method to design controller gains for the voltage phase angle torque feed-back control system

2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) ◽

10.1109/speedam.2016.7525846 ◽

2016 ◽

Cited By ~ 2

Author(s):

Kentaro Matsuo ◽

Keiichiro Kondo

Keyword(s):

Control System ◽

Phase Angle ◽

Voltage Phase

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Voltage phase angle variation in relation to wind power

IEEE PES General Meeting ◽

10.1109/pes.2010.5590001 ◽

2010 ◽

Cited By ~ 4

Author(s):

A J Allen ◽

S Santoso ◽

W M Grady

Keyword(s):

Wind Power ◽

Phase Angle ◽

Angle Variation ◽

Voltage Phase

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Location and Migration Laws of Out-of-Step Center under Multi-Frequency Oscillation Based on Voltage Phase Angle Trajectory

2018 IEEE Power & Energy Society General Meeting (PESGM) ◽

10.1109/pesgm.2018.8586408 ◽

2018 ◽

Author(s):

Fei Tang ◽

Jiale Liu ◽

Qingfen Liao ◽

Yu Liu ◽

Gucheng Xiao ◽

...

Keyword(s):

Phase Angle ◽

Frequency Oscillation ◽

Voltage Phase ◽

And Migration

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An Instantaneous Phase Angle Detection Algorithm under Asymmetric Grid Voltage Dips

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.291-294.401 ◽

2013 ◽

Vol 291-294 ◽

pp. 401-406 ◽

Cited By ~ 2

Author(s):

Peng Wang ◽

Ling Zhu ◽

Kan Zhang

Keyword(s):

Coordinate System ◽

Wind Power ◽

Phase Angle ◽

Low Voltage ◽

Detection Algorithm ◽

Matlab Simulation ◽

Sequence Components ◽

Voltage Phase ◽

Wind Power System ◽

Phase Amplitude

In order to meet the requirements of LVRT and realize the asymmetry control in wind power system, the voltage phase, amplitude, and frequency are needed in real time under both asymmetrical and symmetrical low Voltage condition. Based on double DQ synchronous rotating coordinate system and software phase-locked loop (SPLL), the amplitude and phase angle of both positive and negative sequence components are obtained. Finally, through Matlab simulation and Low voltage device experiment, it proves that the algorithm has the advantages of accurate detection, interference resistance, and strong adaptability.

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