摘要
正确选择低压电线电缆载流量是电气工程设计的关键,直接影响设备选用、保护整定值计算及安全事故预防。为此,对《火力发电厂仪表与控制就地设备安装、管路、电缆设计规程》(DL/T 5182—2021)中交流380 V电动执行机构电缆截面选择规定展开研究。以DL/T 5182—2021为基础,与多本规范进行对比分析,创新性地提出380 V阀门电动装置动力回路电缆线芯截面选型方法。计算及分析结果表明,该方法满足设计要求。该研究不仅为电缆选型提供了参考,还为其他涉及低压电器设备电缆选型的学科领域(如建筑电气、工业自动化等)在规范应用和方法创新上提供了启示。该研究对保障相关领域电缆选型的科学性和安全性具有积极影响。
Proper selection of current-carrying capacity for low-voltage wires and cables is critical in electrical engineering design,as it directly impacts equipment selection,protection setting calculations,and accident prevention.To this end,the provisions for selecting cable cross-sectional areas for 380 V alternating current electric actuators are investigated to the Code for Installation,Piping,and Cable Design of Instrumentation and Control Local Equipment in Thermal Power Plants(DL/T 5182—2021).Based on DL/T 5182—2021 and a comparative analysis of multiple standards,a method for selecting the cross-sectional area of power circuit cables for 380 V valve electric actuators is innovatively proposed.Results of calculation and analysis demonstrate that this method meets design requirements.This study not only provides a reference for cable selection,but also offers insights into standard application and methodological innovation for other disciplines involving low-voltage electrical equipment cable selection such as building electrical and industrial automation,etc.Positive contributions are made by this study to ensure the scientific and safety of cable selection in relevant fields.
作者
郝庆福
高敏
刘焱
王贝
宋欢
HAO Qingfu;GAO Min;LIU Yan;WANG Bei;SONG Huan(Hebei Branch,China Nuclear Power Engineering Co.,Ltd.,Shijiazhuang 050000,China)
出处
《自动化仪表》
2025年第11期114-117,128,共5页
Process Automation Instrumentation
关键词
电厂
工程设计
电动执行机构
电动机
电缆截面计算
电缆选型
Power plant
Engineering design
Electric actuator
Electric motor
Cable cross-section calculation
Cable selection
