The utility model discloses an external underground cable protective sleeving relating to an assorted device for oil and gas well underground cables .
一种外置 式 井下 电缆防护套,涉及一种油气井井下电缆配套装置。
This scheme solves the problems of reliability precision and dynamic update of data etc and also the detail design of information system for underground cable is stated .
给出了一种G IS综合安全监管 开发模式,以解决数据的可靠性和精度,数据的动态更新等难题,对系统设计进行了较详细的描述。
Numerical calculation of temperature field and current of underground cable
地下 埋设 电缆温度场和载流量的数值计算
Analysis of underground cable fire accidents and measures of prevention
浅议 煤矿 井下 电缆火灾事故及预防对策
There are several alternate means of transmitting electric power for example by alternating or direct current overhead or underground cable and all over a wide range of voltages .
有多种送电途径可选择,例如由交流或直流,架室线或 地下 电缆送电并有各种电压等级。
The problems and the countermeasures of the underground cable project in urban network rebuild
城网改造中 电缆 入地工程存在的问题及对策
The temperature monitoring system of underground power cable based on distributed optic fibre sensing technology
基于分布式光纤测温技术的 井下 电缆温度监测系统设计
The rate of underground cable is increasing year by year which makes capacitive current-to-ground increase rapidly . Distribution network lines are mainly arranged by over bare wires and the rate of single phase-to-ground fault and interval short-circuit fault is higher .
电缆出线比例逐年增多,导致对地电容电流剧增;配网线路多以架空裸导线方式配置,单相接地或相间短路故障率较高。
An Experimental Investigation on the Heat Dissipation of the Underground Cable Group
电缆群 直埋敷设散热的试验研究
Combined with the actual network of underground cable determine the structure of the distributed-line monitoring system .
结合 井下 电缆的实际网络,确定了分布式在线监测系统结构。
Trouble testing system of the underground cable with a single chip processor
应用单片机的 地下 电缆故障测试系统
In fault locating of XLPE insulated underground cable of resistance grounding system the fiber optic distributed temperature sensor ( FODT sensor ) can be used to locate the fault position quickly .
分布式光纤温度传感器(FODTsensor)用于 地下电力 电缆故障检测,可对阻性接地系统故障进行快速定位。
Then the analysis of mine wired intercom system in which the coal mine cable radio station design ideas are discussed focusing on the underground cable radio station hardware design expounds the underground cable radio station key technology and working principle .
然后分析煤矿有线对讲系统组成,其中对煤矿井下有线广播话站的设计思路进行了深入探讨,重点讨论 井下 有线广播主站的硬件设计,详细阐述了井下有线广播主站的关键技术及其工作原理。
It may avoid stopping transportation and polluting city environment to have excavation in the open replaced by shallow-concealed excavation for large scale underground cable tunnel construction .
采用浅埋暗挖法施工 地下 电缆隧道取代明沟开挖法,可避免阻断交通、污染城市环境。
Investigation into Underground Cable Systems with Ill-Conditioned Branches by Fast Decoupled Load Flow
用快速分解潮流法研究带病态支路的 地下 电缆系统
Computation and Simulation of Temperature Field and Ampacity for Underground Cable Based on Finite Element Method
基于有限元法的 地下 电缆温度场和载流量的计算及仿真
Overhead lines have more outages than underground cable per unit length but the outages are usually shorter in duration .
架空线路单位长度的停电数要比 地下 电缆的多,但停电持续时间短。
Use of the existing mechanical and electrical integration technology sensor technology the use of underground cable transmission signal the Inoue control work performed underground .
利用了现有的机电一体化技术,传感技术,采用 井下 电缆传输信号,实现了井上控制,井下执行的工作方式。
Shallow-concealed excavation technology for large scale underground cable tunnel construction
大型 地下 电缆隧道浅埋暗挖法施工技术
Application of fiber optic distributed temperature sensor to fault detection of XLPE insulated underground cable
分布式光纤温度传感器在交联聚乙烯绝缘 地下 电缆故障检测中的应用
The temperature data acquisition terminal for cable is an important part of the Temperature Monitoring System for Underground Cable Junction of Urban Distribution Network which needs to perform acquisition processing saving and wireless transmission of the temperature data .
电缆温度采集终端是城市配电网 地下 电缆接头温度巡测系统的重要组成部分,负责电缆接头温度的采集、处理、保存和无线传输。
Conversation by underground cable 90 miles-New York to Philadelphia .
通过 地下 电缆传输的电话线路连接纽约和费城,全长90英里。
A Fault Line Detection Algorithm for Distribution Network of Overhead Line and Underground Cable Mixed Lines Using S-Transform Energy From Short Window Data
基于短窗数据S变换能量的 缆-线混合配电网络故障选线方法
Detecting Technology of Underground Cable - fault
地下 电缆故障探测技术
Numerical Method to Calculate the Transient Temperature Field and Short-Term Ampacity of Underground Cable System
地下 电缆群暂态温度场和短时载流量数值计算方法
HVDC is a new type of power transmission technology developing rapidly in recent years mainly applied to faraway and high capacity power transmission power system networking and submarine or underground cable power transmission .
超高压直流输电(HVDC)是近年来发展起来的一项新的输电技术,主要应用于远距离大容量输电、电力系统联网、海底 电缆或大 城市 地下 电缆送电。
The Design and Development of the Terminal Unit of Temperature Monitoring System for Underground Cable Junctions
电缆接头温度监测系统终端装置的设计与实现
Calculation of lightning impulse Overvoltage on long underground cable lines and insulation co-ordination
长 电缆线路雷电冲击过电压计算及绝缘配合
The Leaking Reason Analysis and Treatment Method of Ditch in the Underground Cable
地下 电缆沟道漏水原因分析及处理方法
美[ˈʌndɚˌɡraʊnd ˈkebəl]英[ˈʌndəɡraund ˈkeibl]
地下电缆