DETECTION OF CURRENT CIRCUITS FAULT FOR DIFFERENTIAL CURRENT PROTECTION
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2018 False operation of the differential current protection leads to tripping of the most important electrical power objects. Fault of current transformer’s secondary circuits is one of the most often cause of false operation of the differential current ...
M. S. Loman, V. S. Kachenya
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Adaptive Current Differential Protection Method Considering Control and Protection Coordination
Zhongguo dianliThe VSC-HVDC transmission system for large-scale new energy has become a typical scenario in China's new power system. However, the transmission line between the new energy station and the flexible direct converter is special with its both sides being ...
Bo ZHANG +3 more
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The study on the Mal-operation of the transformer current differential protection during external faults cause by CT saturation [PDF]
E3S Web of Conferences, 2021 This paper analyses the unusual mal-operation of the differential protection for transformer current differential protection during the external fault. The mal-operation reason is researched in detail, based on the mathematical analysis, the simulation ...
Wu Jianhong +5 more
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AIP Advances, 2023 This paper analyzes an accident of abnormal increase of pole bus differential current and pole differential current of a converter station caused by line fault of a ±800 kV extra high-voltage direct current transmission project.
Xingyang Hu +5 more
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Simulation of longitudinal differential protection of transmission lines with additional stabilization and APU system [PDF]
Tehnika, 2016 This paper explains the algorithm for the longitudinal differential protection of transmission lines with automatic reclosing. Classic stabilization is not sufficient for avoiding of unnecessary operations caused by saturation of current transformer ...
Rajić Tomislav D., Stojanović Zoran N.
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Zhejiang dianli, 2023 There is a difficulty in setting the coordination of over-current protection in the distribution network with distributed power sources and widely laying optical fiber for differential protection in the distribution network， the study on engineering ...
CHEN Yongkui, LI Hongmei, ZHU Jihong
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A novel protection strategy for DC microgrid considering communication failure
Energy Reports, 2023 DC microgrid has become an important part of supporting “carbon peaking, carbon neutralization” and building a low-carbon energy system. However, the short-circuit current of the DC microgrid rises rapidly and has a great impact, threatening the normal ...
Weiliang Zhang, Hui Zhang, Na Zhi
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All-optical differential current detection technique for unit protection applications [PDF]
, 2013 In this paper we demonstrate a novel, all-optical differential current protection scheme. By monitoring the optical power reflected from two matched hybrid fiber Bragg grating current sensors and using a simple optoelectronic threshold detector, an ...
Fusiek, Grzegorz +3 more
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Optimizing the roles of unit and non-unit protection methods within DC microgrids [PDF]
, 2012 The characteristic behavior of physically compact, multiterminal dc networks under electrical fault conditions can produce demanding protection requirements.
Burt, Graeme +4 more
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Consideration of Multi-Phase Criterion in the Differential Protection Algorithm for High-Impedance Grounded Synchronous Generators [PDF]
, 2013 The generator differential protection is one of the most important electrical protections of synchronous generator stator windings. Its operation principle is based on the comparison of the input current and output current at each phase winding. Unwanted
Blánquez Delgado, Francisco +3 more
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