PMU Assisted Integrated Impedance Angle-Based Microgrid Protection Scheme

Development of protection scheme for microgrid is a challenging issue due to the inclusion of distributed generations (DGs). The research work for developing the primary protection scheme for microgrid is progressing continuously. This paper proposes an integrated impedance angle (IIA) based protect...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2020-02, Vol.35 (1), p.183-193
Main Authors: Sharma, Nikhil Kumar, Samantaray, Subhransu Ranjan
Format: Article
Language:English
Subjects:
Distributed generation
Distributed generation (DG)
Electric power systems
Fault detection
Fault location
Impedance
integrated impedance angle (IIA)
Measuring instruments
Medium voltage
microgrid
Microgrids
Penetration
Penetration resistance
phasor measurement unit (PMU)
Phasor measurement units
Resistance
wide area monitoring system (WAMS)
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Summary:Development of protection scheme for microgrid is a challenging issue due to the inclusion of distributed generations (DGs). The research work for developing the primary protection scheme for microgrid is progressing continuously. This paper proposes an integrated impedance angle (IIA) based protection scheme using wide-area positive sequence components of voltages and currents. The proposed scheme uses data retrieved from the phasor measurement units (PMUs) of IEEE C37.118.1 complied standards. Furthermore, the IIA for the line is computed considering both ends PMU information, which is the key indicator for identifying the faults in the microgrid. The proposed protection scheme is extensively tested considering the different operating conditions of microgrid, variation in DG penetration and variation in fault parameters such as fault resistance, fault types, and fault location. Furthermore, cross validation on no-fault situations including section cutoff, disconnection of high penetration DG, grid-islanding resynchronization, motor starting, capacitor switching, and load encroachment are carried out. The proposed scheme is also tested for the insensitivity towards the external faults. The test results on both 15-bus and 34-bus systems clearly indicate that the proposed IIA-based wide-area scheme can be a potential protection measure for microgrid under varied operating circumstances.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2019.2925887