Power Supply Technology of 5G Equipment in Underground Coal Mine [PDF]
, 2020 This paper focuses on the study of power supply technology of 5G equipment in coal mine. Combined with the comparison of existing power supply modes and the existing problems, this paper comprehensively analyzes the design scheme of power supply in ...
MA Long
core +1 more source
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.
openaire +1 more source
Comprehensive evaluation of power quality for coal mine power supply system [PDF]
, 2017 In view of power quality problem caused by progressively increase of nonlinear devices of coal mine enterprise, evaluation index and comprehensive evaluation method of coal mine power quality were proposed.
WANG Shenghua
core +1 more source
Study of large capacity power supply used for coal mine emergency facilities
Gong-kuang zidonghua, 2014 In view of problem that common accumulators used in underground coal mine have obvious constraints, the paper analyzed electricity demands of coal mine emergency facilities and characteristics of dry-charged lead-acid battery, developed large capacity ...
LI Meixiang, ZHOU Zhong, ZHANG Yong
doaj +1 more source
Development of integrated intelligent backup power supply [PDF]
, 2016 In view of problems of low power supply reliability, poor anti-interference ability and inconvenient extension of backup battery capacity existed in coal mine underground distributed power supply, an integrated intelligent back-up power supply was ...
CHEN Xiangyua
core +1 more source
Research on influencing factors of arc grounding over-voltage in mine power supply system [PDF]
, 2017 In order to comprehensively study influence factors such as grounding resistance, line resistance, fault location, grounding capacitance, interphase capacitance and arc ignition time on arc grounding over-voltage in mine power supply system, typical mine
LUO Chao +6 more
core +1 more source
Power Company Fuel Supply - Problems And Solutions [PDF]
, 1982 A power company in the business of supplying electricity to its customers faces numerous problems associated with power production. One of its major problems is to supply its power plants with fuel and to use that fuel as economically as possible.
Smith, R. A., Morgan, J. Derald
core +1 more source
ГІДРОАКУМУЛЮЮЧІ ЕЛЕКТРОСТАНЦІЇ ЯК ДЖЕРЕЛА РОЗПОДІЛЕНОЇ ГЕНЕРАЦІЇ У СКЛАДІ ПРОМИСЛОВИХ ЕНЕРГОСИСТЕМ
Праці Інституту електродинаміки Національної академії наук України, 2023 The article examines the economic aspects of the efficiency of power systems for mine loads, which include peak pumped-storage hydroelectric power plants that use reservoirs of the mine underground water drainage.
О.Ю. Михайленко +2 more
doaj +1 more source
Design of current sharing system for mine explosion-proof lithium power supply
Gong-kuang zidonghua, 2021 In order to solve the problem of uneven discharge current when multiple mine explosion-proof lithium power supplies are used in parallel, a current sharing system for mine explosion-proof lithium power supply is designed.
LI Qiwei1,2,3 +3 more
doaj +1 more source
Mine intrinsic safety power supply based on adjustable capacity and protection time [PDF]
, 2021 In view of the contradiction between the capacity and impact resistance of mine intrinsically safe power supply, an intrinsically safe power supply with adjustable capacity and protection time, self-recovery and slow start function is designed.
LIU Peng, ZOU Dedong
core +1 more source