A Novel Power Swing Detection Scheme Independent of the Rate of Change of Power System Parameters

Jafari, Reza; Moaddabi, N.; Eskandari-Nasab, M.; Gharehpetian, Gevork B.; Naderi, Mehdi Salay

doi:10.1109/tpwrd.2013.2297625

Cited by 41 publications

(13 citation statements)

References 7 publications

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“…4a, when a power swing occurs, the measured impedance slowly moves toward the relay's zones and leads to unwanted tripping of healthy lines. Some possible solutions to cope with this problem utilise the rate of impedance change [35], the rate of active and reactive powers changes [36], circular locus and centre behaviour of the admittance trajectory [37], symmetrical fault detector [38], wavelet transform [39], and adaptive-network-based fuzzy inference system [40].…”

Section: βγ Distance Relaysmentioning

confidence: 99%

Review on microgrids protection

Beheshtaein

Cuzner

Savaghebi

et al. 2019

IET gener. transm. distrib.

163

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Section: βγ Distance Relaysmentioning

confidence: 99%

Review on microgrids protection

Beheshtaein

Cuzner

Savaghebi

et al. 2019

IET gener. transm. distrib.

163

View full text Add to dashboard Cite

“…Some of the methods used to distinguish fault from a power swing and setting relay to operate only for faults include: two blinder scheme [3]; elliptical trajectory of Z [4]; R-Rdot method [5]; and admittance plots [6]. They revolve around static R-X plane independent of time.…”

Section: Introductionmentioning

confidence: 99%

Discriminating Faults from Power Swing Using Impedance Angle and Analysis in Three Dimensional Space

Zeno¹,

Orillaza²

2019

IJCEE

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Faults lead to de-energising of a section of transmission line thus decreasing the reliability of the system. Power swing affects the distance relays leading to false alarms which were the leading cause of unreliability. Faults cause permanent movement of the operating point in RX plot with a transient oscillation. The locus of power swing forms closed loops. Here, impedance angles were used to discriminate the faults from power swing. The investigation was carried out along with three dimensional plots to visualize the locus of impedance in resistance, reactance and time axis. Results signify that faults were differentiated from power swing using differential impedance angle. The test cases include all the unbalanced faults as well as an unstable swing. Power swing formed bi-conical loops above and below the ideal operating impedance, while differential impedance formed hyperboloid with the mean impedance being zero. Simulations were carried out in a 2 bus system and all the voltages and currents were extracted from the center of transmission line. Visual representation of normal operating impedances and power swing using three dimensional plots (R-X-t space) and (dR/dt-dX/dt-t space) were shown in the Appendix.

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“…Reliability of this method reduces in UPFC compensated line because of harmonic infiltration of UPFC. Proposed method in [23] is based on monitoring centre of circular impedance trajectory. According to this method, centre of impedance trajectory during the power swing is always outside of the first zone of DR (zone 1).…”

Section: Introductionmentioning

confidence: 99%

Modified concentric power swing blocker applicable in UPFC compensated line

Khodaparast

Khederzadeh

2018

IET Generation, Transmission & Distribution

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Flexible AC transmission systems (FACTS) devices have adverse impacts on the performance of distance relays (DRs) due to the fast intervention of the controllers of these devices during power swing. Power swing blocker (PSB) as the complementary part in a DR is designed to distinguish a fault from a power swing; meanwhile its performance in compensated lines needs to be investigated. The performance of concentric PSB (CPSB) is studied in transmission lines compensated by unified power flow controller (UPFC). It is shown that fast responses of proportional-integral (PI) controllers of UPFC, reduce recorded time by CPSB significantly (it decreases by 90% of uncompensated condition) which makes DR to issue trip command during power swing condition. Detailed model of UPFC is simulated in three-machine and New England power systems to show the deficiency of CPSB in compensated condition. In order to overcome the deficiency of the CPSB in UPFC-compensated line, two remedial actions are proposed. The first method is based on modifying CPSB to solve the problem and the second method is based on modifying control loop of UPFC to prevent the problem. Both methods show their efficiency to overcome the deficiency.

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A Novel Power Swing Detection Scheme Independent of the Rate of Change of Power System Parameters

Cited by 41 publications

References 7 publications

Review on microgrids protection

Review on microgrids protection

Discriminating Faults from Power Swing Using Impedance Angle and Analysis in Three Dimensional Space

Modified concentric power swing blocker applicable in UPFC compensated line

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