A Fault Level-Based System to Control Voltage and Enhance Power Factor Through an On-Load Tap Changer and Distributed Generators
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3061622
Abstract: The on-load tap changer is critical for voltage regulation, however, its voltage regulation philosophy is suitable for one-directional power flow power systems. Since distributed generators introduce bidirectional power flow, the conventional operation of the on-load… read more here.
Keywords: philosophy; system; load tap; voltage ... See more keywords
Convolutional Variational Autoencoder for Anomaly Detection in On-Load Tap Changers
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Access"
DOI: 10.1109/access.2025.3550097
Abstract: Transformer outages significantly impact the reliability and cost efficiency of power systems. Studies indicate that approximately 30% of transformer failures stem from issues with on-load tap changers (OLTC), crucial components in transformer operation. Therefore, continuous… read more here.
Keywords: detection; tap changers; variational autoencoder; anomaly detection ... See more keywords
Detection of On-Load Tap-Changer Contact Wear Using Vibroacoustic Measurements
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Power Delivery"
DOI: 10.1109/tpwrd.2024.3474420
Abstract: The On-Load Tap-Changer (OLTC), as the sole moving component within a transformer, necessitates routine maintenance to ensure dependable operation. Among the primary maintenance challenges is contact wear in oil-breaking type tap changers, typically assessed through… read more here.
Keywords: contact wear; tap changer; load tap; tap ... See more keywords
Efficient Distribution System Optimal Power Flow With Discrete Control of Load Tap Changers
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Power Systems"
DOI: 10.1109/tpwrs.2019.2894674
Abstract: Load tap changers (LTCs) are commonly used for voltage control in distribution systems. The mechanical relays on LTCs are controlled in discrete steps; hence, distribution optimal power flow (DOPF) formulations require LTCs to be modeled… read more here.
Keywords: control; load tap; dopf; power ... See more keywords
Mechanical Fault Diagnosis of an On-Load Tap Changer by Applying Cuckoo Search Algorithm-Based Fuzzy Weighted Least Squares Support Vector Machine
Sign Up to like & getrecommendations! Published in 2020 at "Mathematical Problems in Engineering"
DOI: 10.1155/2020/3432409
Abstract: To improve adaptability, feature resolution, and identification accuracy when diagnosing mechanical faults in an on-load tap changer (OLTC) of a transformer, in the present research, wavelet packet energy entropy is used to describe the information… read more here.
Keywords: fault; load tap; diagnosis; tap changer ... See more keywords
Comparative Analysis of Acoustic Emission Signals from On-Load Tap-Changers for Potential Detecting of Non-Simultaneous Operations
Sign Up to like & getrecommendations! Published in 2024 at "Archives of Acoustics"
DOI: 10.24425/aoa.2024.148782
Abstract: The research reported in this paper deals with the potential of detecting non-simultaneous operation in on-load tap-changer (OLTC) using an acoustic emission method. Tests conducted under laboratory conditions were carried out using an OLTC model.… read more here.
Keywords: detecting non; acoustic emission; non simultaneous; potential detecting ... See more keywords
Bad data identification method considering the on-load tap changer model
Sign Up to like & getrecommendations! Published in 2024 at "Frontiers in Energy Research"
DOI: 10.3389/fenrg.2024.1478834
Abstract: With the connection and integration of renewable energy, the on-load tap-changer (OLTC) has become an important device for regulating voltage in distribution networks. However, due to non-smooth and non-linear characteristics of OLTC, traditional bad data… read more here.
Keywords: bad data; model; load tap; data identification ... See more keywords
Using Deep Learning to Detect Anomalies in On-Load Tap Changer Based on Vibro-Acoustic Signal Features
Sign Up to like & getrecommendations! Published in 2024 at "Energies"
DOI: 10.3390/en17071665
Abstract: An On-Load Tap Changer (OLTC) that regulates transformer voltage is one of the most important and strategic components of a transformer. Detecting faults in this component at early stages is, therefore, crucial to prevent transformer… read more here.
Keywords: vibro acoustic; using deep; detect anomalies; tap changer ... See more keywords
Diagnosis of Power Transformer On-Load Tap Changer Mechanical Faults Based on SABO-Optimized TVFEMD and TCN-GRU Hybrid Network
Sign Up to like & getrecommendations! Published in 2025 at "Energies"
DOI: 10.3390/en18112934
Abstract: Accurate mechanical fault diagnosis of On-Load Tap Changers (OLTCs) remains crucial for power system reliability yet faces challenges from vibration signals’ non-stationary characteristics and limitations of conventional methods. This paper develops a hybrid framework combining… read more here.
Keywords: mechanical faults; methodology; power; load tap ... See more keywords