Results 11 to 20 of about 10,776 (221)
Basic Requirements and Design Method of Mine-used Intrinsic Safety Power Supply
Gong-kuang zidonghua, 2012 Combining with related requirements of new national standard GB3836.4-2010 and Mining Products Safety Approval and Certification Center, the paper analyzed technical performance of mine-used intrinsic safety power supply, namely electrical isolation ...
ZHU Qian-wei
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Design of mine-used adaptive wide-voltage power supply with explosion-proof and intrinsic safety
Gong-kuang zidonghua, 2013 For characteristics that power supplys in coal mine underground has multi input voltage grades and are susceptible to disturbed when big equipments are starting or stopping, the paper put forward a design scheme of adaptive wide-voltage power supply with
LIU Ya-hui, GUO Jiang-tao, LIN Yin
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Gong-kuang zidonghua, 2014 In view of requirement of GB 3836.2-2010 that battery with precipitated combustible mixture cannot be used in flameproof shell, a start-up power supply system of lithium-ion battery of mine-used explosion-proof diesel locomotive was designed with serial ...
XIAO Linjing +3 more
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Simulation of the power supply system of the coal mine section [PDF]
E3S Web of Conferences, 2021 At present, the designing of a power supply system for mine sections is performed in accordance with obsolete regulatory documents made in the early 90s of the 20th century. This slows down the implementation of the ‘digital mining operation’ concept and
Nepsha Fedor +3 more
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Simulation modeling of the power supply system of the coal mine excavation area with facts devices [PDF]
E3S Web of Conferences, 2021 The introduction of technologies for active-adaptive control of the operating modes of the power supply systems of coal mines can contribute to an increase in the energy efficiency of coal mining.
Voronin Vyacheslav +4 more
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Setting strategy of instantaneous current quick-breaking protection for mine power grid
Gong-kuang zidonghua, 2023 The mine power grid operating environment is poor. When a short circuit fault occurs in the underground power supply system, the use of complex anti-skip trip protection device will reduce the reliability of the entire power grid and increase the cost ...
YU Qun, CUI Guoliang, GU Feng, LIU Tao
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Lead-carbon battery energy storage system for coal mine ventilator
Gong-kuang zidonghua, 2016 In order to improve reliability of power supply and ensure safety production of coal mine, a lead-carbon battery energy storage system used as emergency power supply for coal mine ventilator was introduced, and system structure, grid access way, system ...
NIU Jianna, ZHOU You, WU Tong
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Design of mine cascade converter with wide input voltage range
Gong-kuang zidonghua, 2022 The converter used in the power supply has problems of low voltage gain, high voltage stress of power tube, non-electrical isolation and complex control.
LIU Yangqing, ZHOU Yuan
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Application of FACTS Devices in Power Supply Systems of Coal Mines [PDF]
E3S Web of Conferences, 2020 In this article, the authors discuss the use of FACTS devices in coal mine power systems. The problems of reactive power compensation and the disadvantages of regulatory and technical documentation regarding the use of modern reactive power compensation ...
Nepsha Fedor +4 more
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Design of output filter device of mine-used high-voltage inverter for long-distance power supply
Journal of Physics: Conference Series, 2022 Abstract During the long-distance transmission of the Pulse width modulation ( PWM ) signal of the mine-used inverter, the voltage reflection phenomenon leads to a higher peak voltage at the motor end, which accelerates the insulation aging of the motor and reduces the overall reliability of the system.
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