A Novel Single-Phase Adaptive Reclosure Scheme for Transmission Lines With Shunt Reactors

Single-phase adaptive reclosure (SPAR) schemes applied to transmission lines have been an effective method to improve the stability of power system. Attractive techniques have been proposed for SPAR schemes based on the tripped fault-phase voltage. But for transmission lines with shunt reactors, the...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2009-04, Vol.24 (2), p.545-551
Main Authors: Jiale Suonan, Jiale Suonan, Wenquan Shao, Wenquan Shao, Guobing Song, Guobing Song, Zaibin Jiao, Zaibin Jiao
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Computer simulation
Current measurement
Differential current
Electric potential
Electric utilities
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Faults
Inductors
Mathematical models
Miscellaneous
Power networks and lines
Power system faults
Power system stability
Power system transients
Power transmission lines
Reactors
relaying protection
Shunt (electrical)
Shunt reactors
single-phase adaptive reclosure
Transformers and inductors
Transmission line measurements
Transmission lines
Voltage
Voltage transformers
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Summary:Single-phase adaptive reclosure (SPAR) schemes applied to transmission lines have been an effective method to improve the stability of power system. Attractive techniques have been proposed for SPAR schemes based on the tripped fault-phase voltage. But for transmission lines with shunt reactors, the voltage is so minor that the error of voltage transformer limits the applications of voltage-based SPAR schemes. To overcome this disadvantage, a new scheme using differential current between the calculated current based on transient fault model and the actual measured current from the fault phase of shunt reactor is proposed in this paper. The calculated current is obtained by using the transient fault model whether there is a transient or permanent fault. In the case of transient fault, the calculated current is close to the measured current due to the actual fault model being close to the calculated model. As for the permanent fault, the calculated current is quite different from the measured current. Therefore, the differential current of the fault phase can be employed to distinguish permanent fault from transient fault. At last, the Alternative Transients Program simulation results show that the developed algorithm can identify the permanent fault correctly and reliably, and is promised to be applied to SPAR for transmission lines with shunt reactors.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2009.2014475