When the switch is turned to any of its variable speed "on" settings, current can flow though the switch and down to earth to allow the relay to switch on. 当开关转变为任何变速“开启”的设置时,电流可以通过开关接到地上,继电器开启。
Principle and structure of a lubrication system test unit, flow relay suitable for low pressure and low flow are introduced, high stability and accuracy compared with that of pressure relay is showed. 介绍了一种适用于低压、流量润滑系统的检测元件&流量继电器的原理和结构。
Compared to conventional software design based on flow chart, the protection software is developed based on relay function module, which leads to the separation of time sequence and logic. 该方法摒弃了传统的基于流程图的设计思路,将软件的时序与逻辑分离,模块性好,结构清晰,软件的开发、维护方便。
The simulation system is made up of a power network graphing system, power flow calculation, fault calculation and relay protection simulation. 该仿真系统由电网图绘制系统、潮流计算、短路计算和继电保护仿真系统等几部分组成。
Flow Field Designing for Air-Jet Relay Weft Insertion 喷气接力引纬流场的设计
As a result, the problem of calculation speed of the power flow, frequency and fault in DTS is solved. And it makes the simulation of relay protection and automatic device more practicable. 解决了DTS系统中潮流/频率以及故障计算速度的问题,使得DTS中继电保护和安全自动装置的仿真更加贴近实际,将DTS中继电保护和安全自动装置的仿真提高到一个新的水平。
New Test Unit& Flow Relay 一种新的检测元件&流量继电器
This module instructs new framework of equipment setting coordination, whose uniform data structure and software flow scheme has a good base for the self redefinition of protective relay coordination. 该模块构建了面向保护装置整定的结构模式,建立了统一的层级式数据结构和程序流程,为保护装置的自定义扩展建立了基础。
The development of liquid flow relay 液流继电器的研制
Power flow and short circuit current calculation are the important facilities in the power system analysis. There are the basis of relay protection setting and security analysis of power system. 潮流和短路电流计算是电力系统分析的重要工具,是进行系统继电保护整定,安全分析的依据。
Computer Analysis of Effect of Transient Harmonic Flow on Relay Protection 瞬态谐波潮流对继电保护影响的一种计算机分析方法
As the performance of the grid after closing loop was opaque to the dispatcher and to judge the feasibility of closing loop was difficult, the loop power flow was sometimes too large, which would cause lines or equipments overload, relay action and blackouts of consumers. 由于合环后的电网运行状况对调度员是不透明的,很难判断合环操作的可行性,可能导致合环潮流过大,线路或设备过载甚至保护跳闸,造成用户停电。
Users could self-defined flow control of relay protection setting, which not only realize the combination of setting calculation function and process management of setting, but also reduce work capacity of maintenance management information. 用户可以自定义继电保护整定单流程控制,实现了整定计算功能同整定单流程化管理的有机结合,减少了维护管理信息的工作量。
So a flow control mechanism might be needed for Relay Node. First, we analyze the buffer overflow of RN in this paper. 所以此时有必要提出针对中继节点的流量控制方案。本文首先分析中继的缓冲区的过载情况。
According to such property, we present a greedy decode-and-forward cooperative scheme based on the flow control at the relay node after inducing the concept of the asymptotically optimal fountain codes. 基于此,引入渐近最优喷泉码的概念,给出了基于中继流控制的贪婪解码转发协作方案。
The transmission line power frequency parameters are the foundation of the load flow calculations, setting calculation of relay protection etc. and also have important significance for the power system working steady, safety and reliably. 输电线路工频参数是正确进行潮流计算、继电保护整定计算等各种电力系统计算的基础,对电力系统安全、稳定、可靠运行具有十分重要的意义。
Power transmission line system for calculating the parameters of an increasingly high demand for accuracy, so accurate transmission line parameters for power flow calculation, Failure analysis, loss calculation and relay coordination, and so on is the basis of calculation of power system. 电力系统计算对输电线路参数的准确性要求越来越高,准确的输电线路参数是正确进行潮流计算、故障分析、网损计算和继电保护整定计算等电力系统计算的基础。