A novel distributed bus protection based on traveling-wave power directions and wavelet transformation

Duan, Jiandong; Zhang, B.H.; Zhang, S.X.

doi:10.1049/cp:20040146

Cited by 6 publications

(6 citation statements)

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“…. LGJQT‐1400 type special lightweight steel‐cored aluminum stranded wire is used for the busbar , and the transmission line adopts the structural parameters of the 500‐kV central China Power Grid Pingdingshan to Wuchang line . (The wire adopts LGJQ‐300 × 4 four‐split wire, and the resistance of every single wire is 0.108 Ω/km.)…”

Section: Simulation Examplementioning

confidence: 99%

“…For the busbar protection criteria and established using only the peak information of the traveling wave, the peak information may be lost, and the protection criterion will be invalidated. Busbar protection based on the power frequency sampling value differential encounters large disturbing pulses and gives several bad data, and the virtual value or the average value will be large, which may cause malfunctioning of the protection .…”

Section: Analysis Of Protection Criteria Performancementioning

confidence: 99%

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A new algorithm for busbar protection based on the comparison of initial traveling wave power

Dong

2018

IEEJ Transactions Elec Engng

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According to the traveling-wave theory, this paper presents a new busbar protection algorithm based on the comparison of the initial traveling wave power. The algorithm analyzes the distribution characteristics of the initial traveling wave when internal and external busbar faults occur and calculates the traveling wave reactive power of multiple sampling points of the initial traveling wave based on S-transform. And, accordingly, the concept of integrated reactive power is proposed. The protection criterion is established based on the comparison of the initial traveling wave integrated reactive power magnitude of each associated transmission line connected to the busbar. When an internal busbar fault occurs, the initial traveling wave integrated reactive power of each associated transmission line connected to the busbar is infinitesimally small and approximately equal; when an external busbar fault occurs, the initial traveling wave integrated reactive power of the faulted transmission line connected to the busbar exists and the values are much larger than that of the non-faulted transmission lines. By comparing the relative magnitudes of the initial traveling wave integrated reactive power of each associated transmission line connected to the busbar, a clear distinction between internal and external busbar faults can be made. Theoretical analysis, along with simulation experiments, indicates that the proposed method of performance assessment for busbar protection is sensitive, reliable, quick to respond, and easy to distinguish, and would not be affected by the influence of fault initial angles, fault types, transitional resistances, and other factors.Hao Wu (Non-member) received the Ph.D. degree in the automation of electric power systems from Southwest Jiaotong University, Chengdu, China, in 2016. He is presently an Associate Professor with the School of Automation and Information Engineering, Sichuan University of Science and Engineering, Zigong, China. His research interests include power system protection and control and power systems simulation and modeling.Xingxing Dong (Non-member) received the B.Sc. degree in electrical engineering and automation from the

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Section: Simulation Examplementioning

confidence: 99%

Section: Analysis Of Protection Criteria Performancementioning

confidence: 99%

A new algorithm for busbar protection based on the comparison of initial traveling wave power

Dong

2018

IEEJ Transactions Elec Engng

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“…MOA is metal oxide lightning arrester, CT and PT represent current transformer and voltage transformer. 1 F is the bus fault and 2 F is the line fault. The simulation sampling frequency is 50 kHz and the data window is 5 ms.…”

Section: Electromagnetic Transient Simulationmentioning

confidence: 99%

“…However, the traditional digital bus protection is mostly based on industrial frequency component, the anti-CT saturation ability is poor and the low action speed couldn't meet the rapid development of the power system increasingly [1][2][3][4]. New ultra high speed bus protection algorithm based on fault transient component is proposed by many scholars, which could avoid the impact of CT saturation, transition resistance, load current, system oscillation and other factors.…”

Section: Introductionmentioning

confidence: 99%

Study on The Novel Transient Bus Protection Based on Morphological Top-bottom-operator

Shu¹,

Dai²,

Xiao³

2011

IJISA

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Abstract-A novel transient component bus protection based on mathematical morphology is presented in this paper, which takes the morphological max top-bottomoperator of current traveling wave to fast distinguish the bus internal fault from the external fault. The method is based on the principle that the high frequency component of transient traveling wave caused by bus external fault will be attenuated by the bus capacitance but the traveling wave caused by bus internal fault changes slightly. Simulation is carried out with the electromagnetic transient simulation software PSCAD/EMTDC, the result verifies the bus protection is reliable and accurate. The novel bus protection also can treat lightning failure or lightning disturbance happened on transmission lines as bus external fault, without malfunction.

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“…The other is to use a new principle and method of distributed busbar protection without data synchronization. References [7] propose a distributed busbar protection based on the principle of traveling wave direction. The principle requires a small amount of information, and the data at each interval need not be synchronized.…”

Section: Introductionmentioning

confidence: 99%

Principle of Distributed Bus Protection Based on Directional Impedance Component Comparison

Hong

Shiping

Xiao

et al. 2022

J. Phys.: Conf. Ser.

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Distributed bus protection is one of the main tasks of smart substation construction to improve the secondary system because it is economical, simple, easy to layout, and easy to realize double. This paper mainly considers that distributed current differential protection is limited by high precision synchronization and high bandwidth and a distributed bus protection based on the directional impedance element comparison principle is proposed. The bus impedance protection constructed by reverse current calculation is proposed, which the impedance protection with positive sequence polarization and the impedance protection with memory polarization are the main components. Further considering the influence of system oscillation, the power frequency variable distance protection is introduced to form a distributed bus protection system, and the setting and time setting principles are given. The principle of the protection system is simple and the action is reliable. The effectiveness of the protection system is verified based on PSCAD simulation software.

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A novel distributed bus protection based on traveling-wave power directions and wavelet transformation

Cited by 6 publications

References 0 publications

A new algorithm for busbar protection based on the comparison of initial traveling wave power

A new algorithm for busbar protection based on the comparison of initial traveling wave power

Study on The Novel Transient Bus Protection Based on Morphological Top-bottom-operator

Principle of Distributed Bus Protection Based on Directional Impedance Component Comparison

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