Enhanced Summation Impedance Relay for EHV Transmission Lines

Li, Zhengtian; Tong, Ning; Lin, Xin; Wang, Zhixun; Zheng, Yuchao; Lyu, Ran; Hong, Zhao; Le, Chen

doi:10.1109/tpwrd.2019.2902388

Cited by 8 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As early as 1969, SANT and Paithankar first proposed a single-ended ranging algorithm, that is, by collecting the voltage and current at one end of the line and calculating the fault distance through a formula [17,18]. It is feasible to use a single-sided power supply line, but for a double-sided power supply, due to the increase of side auxiliary current and the large transition resistance of the fault point, a large distance deviation will often occur.…”

Section: Overview Of Transmission Line Faultsmentioning

confidence: 99%

Research on Transmission Line Fault Location Based on the Fusion of Machine Learning and Artificial Intelligence

Liu

2021

Security and Communication Networks

View full text Add to dashboard Cite

After a transmission line fails, quickly and accurately find the fault point and deal with it, which is of great significance to maintaining the normal operation of the power system. Aiming at the problems of low accuracy of traditional traveling wave fault location methods and many affected factors, this paper relies on distributed traveling wave monitoring points arranged on transmission lines to study methods to improve the accuracy of traveling wave fault location on transmission lines. First, when a line fails, a traveling wave signal that moves to both ends will be generated and transmitted along the transmission line. We use the Radon transform algorithm to process the traveling wave signal. Then, this paper uses ant colony algorithm to analyze and verify the location and extent of transmission line faults and then optimizes high-precision collection and processing. Finally, the simulation distance measurement is carried out on double-terminal transmission lines and multiterminal transmission lines (T-shaped lines) with branches. The results show that, for double-ended transmission lines, the algorithm increases the speed of matrix calculations and at the same time makes the fault location error of the transmission grid still maintain the improved effect.

show abstract

Section: Overview Of Transmission Line Faultsmentioning

confidence: 99%

Research on Transmission Line Fault Location Based on the Fusion of Machine Learning and Artificial Intelligence

Liu

2021

Security and Communication Networks

View full text Add to dashboard Cite

show abstract

“…Using (17) as the fitting function, the attenuation coefficient 𝛿 𝛼 can be obtained by fitting the vector row G j .…”

Section: Calculation Of Attenuation Coefficientmentioning

confidence: 99%

“…However, this method cannot fundamentally solve the problem of non‐metallic grounding, and there are errors in principle. The adaptive method adaptively adjusts the operating threshold according to the parameter model of the specific line and the real‐time measurement information [17]. Reference [18] adjusts the protection scheme according to the fault sequence current and the phase angle of the measured impedance.…”

Section: Introductionmentioning

confidence: 99%

A novel distance protection scheme using single‐ended transient voltage based on generalized S transform

Sun

et al. 2022

IET Generation Trans & Dist

View full text Add to dashboard Cite

Concerning the distance protection steady-state over-reach or under-reach caused by the transition resistance, a novel distance protection scheme based on transient information is proposed. First, multiple fault features are extracted using the Generalized Stockwell Transform (GST), and a criterion for identifying low-resistance and high-resistance ground faults is constructed. Then, a GST coefficient matrix is established for the single-ended transient voltage of the line, the attenuation coefficient and delay coefficient are derived by the least-squares method and the beat phenomenon, and the transition resistance is calculated. On this basis, adjust the operation boundary in the +R axis direction of the operation zone according to the transition resistance value. Finally, test results on realtime digital simulation system (RTDS) demonstrate that the protection scheme operates reliably in different fault cases and is highly immune to fault resistance. Compared with the traditional distance protection scheme, this scheme performs better when the transition resistance is large.

show abstract

Detection and Classification of EHV Transmission Line Faults Based on Sign of Reactive Power

Velpula,

Nageswara Reddy,

Pitchaimuthu

2024

Arab J Sci Eng

View full text Add to dashboard Cite

Enhanced Summation Impedance Relay for EHV Transmission Lines

Cited by 8 publications

References 20 publications

Research on Transmission Line Fault Location Based on the Fusion of Machine Learning and Artificial Intelligence

Research on Transmission Line Fault Location Based on the Fusion of Machine Learning and Artificial Intelligence

A novel distance protection scheme using single‐ended transient voltage based on generalized S transform

Detection and Classification of EHV Transmission Line Faults Based on Sign of Reactive Power

Contact Info

Product

Resources

About