Results 11 to 20 of about 9,150 (262)

Integrating IoT Technology for Improved Distribution Transformer Monitoring and Protection

Electrical, Control and Communication Engineering, 2023
This research study focuses on developing and implementing an IoT-based distribution transformer monitoring and protection system. The traditional methods of transformer protection and monitoring have proven to be inefficient and time-consuming, leading ...
Rehman Sadiq Ur, Khan Adeel
doaj   +1 more source

Substation protection method for missing measurement information of transformer and bus connecting line [PDF]

E3S Web of Conferences, 2021
In order to solve the problems of protection misoperation and refusing to operate caused by the lack of measurement information in smart substation, a substation protection method which can effectively eliminate the influence of transformer inrush ...
Liu Wei, Wang Yuxue, Wang Zengchao, Xu Zhile, Li Yiquan, Deng Xuyang, Liu Shidan, Liu Kun, Wen Minghao   +8 more
doaj   +1 more source

A Simplified Top-Oil Temperature Model for Transformers Based on the Pathway of Energy Transfer Concept and the Thermal-Electrical Analogy

Energies, 2017
This paper presents an alternative approach to determine the simplified top-oil temperature (TOT) based on the pathway of energy transfer and thermal-electrical analogy concepts.
Muhammad Hakirin Roslan, Norhafiz Azis, Mohd Zainal Abidin Ab Kadir, Jasronita Jasni, Zulkifli Ibrahim, Azalan Ahmad   +5 more
doaj   +1 more source

Saturation Detection-Based Blocking Scheme for Transformer Differential Protection

Energies, 2014
This paper describes a current differential relay for transformer protection that operates in conjunction with a core saturation detection-based blocking algorithm.
Byung Eun Lee, Jinsik Lee, Sung Ho Won, Byongjun Lee, Peter A. Crossley, Yong Cheol Kang   +5 more
doaj   +1 more source

Enhanced Transformer Overcurrent Protection via Oil Temperature Acceleration

Energies
When a transformer is in a long-term heavy load operation state, the oil temperature reaches the alarm temperature; if a slight fault occurs inside the transformer, traditional inverse time current protection and other protections that react to phase ...
Qingguo Liu, Nuonan Mei, Zheng Wang, Jiahang Sun, Shanshan Zhou   +4 more
doaj   +1 more source

A COMPREHENSIVE MODEL FOR THE POWER TRANSFORMER DIGITAL DIFFERENTIAL PROTECTION FUNCTIONING RESEARCH

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2016
This article presents a comprehensive model for the two-winding power transformer digital differential protection functioning research. Considered comprehensive model is developed in MatLab-Simulink dynamic simulation environment with the help of ...
Yu. V. Rumiantsev
doaj   +1 more source

Identification of interturn faults in power transformers by means of generalized symmetrical components analysis [PDF]

E3S Web of Conferences, 2019
The paper deals with experimental identification of transformer internal faults, an important factor in reliability and sustainability of power supply systems. Task of identification of transformer internal faults requires increasing sensitivity of relay
Ivanchenko Daniil, Smirnov Artem
doaj   +1 more source

TRANSFORMATION OF PROTECTED URBAN LANDSCAPES

Journal of Sustainable Architecture and Civil Engineering, 2017
Protected urban landscapes are usually perceived as old parts of a town or old towns. Such historical hubs are found in Vilnius, Kaunas, Klaipėda, Kėdainiai and other towns in Lithuania. Perhaps such landscapes can be found in each state of European or the world; the most valuable are included into the UNESCO World Heritage List.
Garbaliauskaitė, Rūta, Mlinkauskienė, Aušra   +1 more
openaire   +2 more sources

Improved scheme based on memory voltage for transformer differential protection considering the effects of PLL

IET Generation, Transmission & Distribution
The phase‐locked loop (PLL) is a critical control module applied in the control system of renewable energy sources (RESs) to synchronize with the grid voltage.
Tao Zheng, Ruozhu Zhang, Ying Chen, Jingwen Ai, Yilin Sun   +4 more
doaj   +1 more source

An Approach to Performing Stability Analysis for Power Transformer Differential Protection: A Case Study

Energies, 2022
Differential protection normally detects short circuits and ground faults in the windings of a power transformer and its terminals. Inter-turn faults refer to flashovers among the electrodes that arise only in a similar type of physical winding.
Muhammad Sheryar, Muhammad Ahsan Ali, Farhana Umer, Zeeshan Rashid, Muhammad Amjad, Zunaib Maqsood Haider, Muhammad Omer Khan   +6 more
doaj   +1 more source