DC offset estimation‐based fault detection in transmission line during power swing using ensemble of decision tree. Issue 2 (1st March 2019)

• Record Type: Journal Article
• Authors: Shukla, Sunil K.; Koley, Ebha; Ghosh, Subhojit
• Is Part Of: IET science, measurement & technology. Volume 13:Issue 2(2019)
• Page Start: 212
• Page End: 222
• Publication Date: 2019-03-01
• Subjects: fault location -- least squares approximations -- relay protection -- power transmission lines -- power system measurement -- power transmission protection -- power transmission faults -- fault currents -- fault diagnosis -- power transmission reliability -- decision trees; power system blackouts -- distance relay -- current signal -- fault detection/classification -- power swing detection -- diverse power swing -- DC offset estimation‐based fault detection -- transmission line -- decision tree -- nuisance tripping -- blocking signal -- protection scheme -- Adaline algorithm -- least square algorithm -- tree algorithm -- zone identification -- location estimation -- two‐machine system -- Western System Coordinating Council 9‐bus system -- OPAL‐RT digital simulator; Measurement -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Periodicals; Nanotechnology -- Periodicals; Electromagnetism -- Periodicals; Medical instruments and apparatus -- Periodicals; 621.3
• DOI: 10.1049/iet-smt.2018.5071
• Languages: English
• ISSNs: 1751-8822

Abstract

Abstract : The nuisance tripping of distance relay during power swing has been identified as one of the major causes for power system blackouts. Avoiding the risk of maloperation of distance relay and hence improving resilience during power swing, demands the development of a scheme capable of generating blocking signal during power swing and detecting a fault occurring with power swing from the measurement of current signal. In this regard, a protection scheme based on the hybrid framework of an ensemble of the tree, least square, and Adaline algorithm to perform the task of fault detection/classification, zone identification, location estimation, and power swing detection is proposed. The proposed scheme is based on the online estimation of DC offset information along with the fundamental component of the current signal. The performance of the proposed scheme has been analysed for diverse power swing and fault scenarios for two‐machine system and Western System Coordinating Council 9‐bus system. The simulation results reflect the effectiveness of the developed scheme in terms of sensitivity and reliability. Furthermore, to authenticate the effectiveness of the proposed scheme for practical scenarios, implementation, and validation of the proposed scheme has been carried out in a real‐time environment using the OPAL‐RT digital simulator.