Design and development of travelling-wave-frequency-based transmission line fault locator using TMS320 DSP

• Published in: IET science, measurement & technology Vol. 13; no. 4; pp. 518 - 522
• Main Authors: Arkan, Müslüm, Akmaz, Düzgün, Mamiş, Mehmet S, Tağluk, Mehmet Emin
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.06.2019
• Subjects: alternative transients programme–electromagnetic transient programme; data acquisition; digital signal processing chips; EMTP; fast Fourier transforms; fault diagnosis; fault instant; fault location; line currents; positive‐sequence‐component line; power distribution faults; power system transients; power transmission faults; power transmission lines; real‐time fault detection; Research Article; short‐circuit fault conditions; signal processing; time‐domain transient current waves; TMS320 digital signal processor; TMS320‐DSP; travelling‐wave frequency; travelling‐wave‐frequency‐based transmission line fault locator; virtual instrumentation; power transmission lines; fast Fourier transforms; TMS320 digital signal processor; time-domain transient current waves; fault diagnosis; EMTP; signal processing; fault location; travelling-wave frequency; power distribution faults; positive-sequence-component line; real-time fault detection; power system transients; virtual instrumentation; TMS320-DSP; short-circuit fault conditions; power transmission faults; fault instant; alternative transients programme–electromagnetic transient programme; data acquisition; line currents; digital signal processing chips; travelling-wave-frequency-based transmission line fault locator
• ISSN: 1751-8822; 1751-8830; 1751-8830
• DOI: 10.1049/iet-smt.2018.5357

The authors use a TMS320 digital signal processor (TMS320-DSP) to determine fault instants and estimate their location in real time in a laboratory environment. The fault instant is determined via examining the instantaneous differential changes in the line currents. After the fault is detected, the fault location is determined by processing the time-domain transient current waves. First, the travelling-wave frequency is determined by application of the fast Fourier transform to the positive-sequence-component line current after the fault, and subsequently, the fault location is estimated by utilising this frequency. The alternative transients programme (ATP)–electromagnetic transient programme is used to simulate the line currents and create short-circuit fault conditions. Furthermore, LabVIEW software and a National Instruments data acquisition board are used to transform the line currents obtained through the ATP programme into analogue signals. The TMS320-DSP determines the fault in real time and estimates the fault location using the completed software and analogue input signals. Their results indicate that the prototype device designed with the use of the TMS320-DSP is suitable for real-time fault detection.