An Adaptive Approach in Digital Distance Protection

Zhizhe, Zhang; Chen, Deshu

doi:10.1109/mper.1991.88651

Cited by 98 publications

(20 citation statements)

References 2 publications

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“…The measured impedance at the relaying point by distance relay is not only affected by the magnitude of the fault resistance, but also influenced by the system condition prior to the fault instance [8]- [10]. The power system pre-fault conditions can be categorized into operational and structural conditions.…”

Section: Introductionmentioning

confidence: 99%

Impedance based fault location method for phase to phase and three phase faults in transmission systems

Shateri¹,

Jamali²

2012

11th IET International Conference on Developments in Power Systems Protection (DPSP 2012)

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This paper presents a new impedance based fault location method in the case of phase to phase and three phase faults. This method utilized the measured impedance by distance relay and super imposed current factor, which is the ratio of post-fault current to super imposed current, to discriminate the fault position on the line. This method is robust against the fault resistance. The presented method only uses the measured impedance by distance relay, the super imposed current factor and few data which could be achieved through the SCADA based databases.

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Section: Introductionmentioning

confidence: 99%

Impedance based fault location method for phase to phase and three phase faults in transmission systems

Shateri¹,

Jamali²

2012

11th IET International Conference on Developments in Power Systems Protection (DPSP 2012)

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“…There are several factors affecting the measured impedance at the relaying point. Some of these factors are related to the power system parameters prior to the fault instance [1]- [3], which can be categorized into two groups: structural and operational conditions. In addition to the power system parameters and independent of the absence or presence of FACTS devices, the fault resistance could greatly influence the measured impedance, in such a way that in the case of zero fault resistance, the power system parameters do not affect the measured impedance.…”

Section: Introductionmentioning

confidence: 99%

Modified distance protection in presence of UPFC on a transmission line

Jamali¹,

Kazemi²,

Shateri³

2010

9th IET International Conference on AC and DC Power Transmission (ACDC 2010)

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This paper presents a modified distance protection scheme in the presence of Unified Power Flow Controller (UPFC), one of the Flexible Alternating Current Transmission System (FACTS) devices. The presence of UPFC on a transmission line has a great influence on the measured impedance at the relaying point. The measured impedance itself depends on the power system structural conditions, pre-fault loading, and especially the fault resistance. In the presence of UPFC, its controlling and structural parameters as well as its installation point affects the measured impedance. Therefore, the conventional distance schemes might not fulfil the protective duties satisfactorily and new approaches are required.

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“…There are several factors affecting the measured impedance at the relaying point in the case of first or other zones. Some of these factors are related to the power system parameters prior to the fault instance [1]- [3], which can be categorized into two groups. In the case of the first zone, the first group is the structural conditions of the line, represented by the short circuit levels at the line ends, whereas the second group is the pre-fault operational conditions, represented by the line load angle and the voltage magnitude ratio at the line ends.…”

Section: Introductionmentioning

confidence: 99%

Voltage inversion due to presence of SSSC on adjacent lines and distance relay mal-operation

Jamali

Kazemi

Shateri

2008

2008 IEEE International Conference on Industrial Technology

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This paper discusses the distance relay maloperation in the presence of Static Synchronous Series Compensator (SSSC), one of the series connected Flexible Alternating Current Transmission System (FACTS) device. This is done by presenting the measured impedance at the relaying point in the case of SSSC presence at the near end of the line behind. Measured impedance by distance relay is greatly influenced in the presence of SSSC on the transmission line or even in the case of installation of SSSC on the adjacent lines, near end of the line behind. Distance relay tripping characteristic depends on many factors including the power system structural conditions and the pre-fault loading, the ground fault resistance, and SSSC structural and controlling parameters.

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An Adaptive Approach in Digital Distance Protection

Cited by 98 publications

References 2 publications

Impedance based fault location method for phase to phase and three phase faults in transmission systems

Impedance based fault location method for phase to phase and three phase faults in transmission systems

Modified distance protection in presence of UPFC on a transmission line

Voltage inversion due to presence of SSSC on adjacent lines and distance relay mal-operation

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