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Content Provider | IET Digital Library |
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Author | Shu, Hongchun Jiang, Xiaohan Wang, Xuan Cao, Pulin Yang, Bo |
Abstract | The high-resistance faults at the far end are the most important factor that causes protection failure of HVDC transmission lines. In the initial stage of the transmission lines fault, the transient information of power grid is abundant, and the sequential overlapping derivative (SOD) transform can emphasise the characteristics of the high-frequency transient signal and its sudden change direction, amplify fault characteristics, and eliminate noise as far as possible, which is of great benefit to identify the high-resistance faults at the far end. A fault identification method based on the SOD transform of voltage transient is proposed. In this method, the initial fault voltage travelling wave is processed by the SOD transform, and the initial fault voltage is a travelling wave is quickly detected. The set value of SOD transform is obtained according to the traversal simulation fault location, thus the identification criteria of internal and external faults are obtained. The simulation results show that the method can accurately identify the high-resistance faults at the far end, and it is hardly affected by transition resistance and fault distance. |
Starting Page | 4643 |
Ending Page | 4653 |
Page Count | 11 |
ISSN | 17518687 |
Volume Number | 14 |
e-ISSN | 17518695 |
Issue Number | Issue 21, Nov (2020) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/14/21 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.0395 |
Journal | IET Generation, Transmission & Distribution |
Publisher Date | 2020-09-03 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | D.C. Transmission External Fault Fault Characteristic Fault Diagnosis Fault Distance Fault Identification Method Fault Location High-frequency Transient Signal High-resistance Fault HVDC Power Transmission HVDC Transmission Line Initial Fault Voltage Travelling Wave Internal Fault Power Grid Power System Protection Power System Transients Power Transmission Fault Power Transmission Line Power Transmission Protection Power Transmission Reliability Power Transmission, Distribution And Supply Reliability Sequential Overlapping Derivative SOD Transform Transient Information Transition Resistance Transmission Line Fault Traversal Simulation Fault Location UHVDC Transmission Line Voltage Transient |
Content Type | Text |
Resource Type | Article |
Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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