branch n. 1.(树)枝〔泛指大枝或小枝;bough 特指大枝,也指连花、果折下的枝;limb 指大枝;twig 指小枝〕。 2.支脉;支派;支管;支线;(家族的)支系;【语言学】(语系的)支,族。 3.(学科)分科;部门,支部,分部,分行;分店。 4.〔美国〕支流,小河,小川。 5.【电学】分流;【计算机】转移。 the branchs of a deer's antelers 鹿角的岔枝。 branch road 岔道。 the various branches of learning 各门学科。 the executive branch of the government 政府的行政部门。 an overseas branch 海外分店。 the Germanic branch of the Indo-European language family 印欧语系的日耳曼语族。 a party branch 党支部。 root and branch 彻底的[地]。 vi. 1.(树)出枝,开叉。 2.分部,分门;分岔;分支。 The main road branches off to the left. 大道向左分出一条岔路。 Numerous lesser roads branched off from the main highway. 从主要公路上分出无数小道。 vt. 1.使分枝。 2.用枝、叶、花等图案装饰(织物)。 branch forth (树)扩展枝叶;(商店等)扩展分支机构。 branch off [away] (道路等)分叉,岔开。 branch out 1. (树)发枝,长出枝条;(话等)横生枝节。 2. (事业等)扩大规模。 His firm branched out to New York. 他的公司把分支机构扩大到了纽约。
current adj. 1.通用的,流行的。 2.现在的,现时的,当时的。 3.流畅的;草写的。 the current price 市价。 current news 时事。 current expenditure 经常费。 current expenses 日常费用。 the current issue [number] (杂志的)本期。 the current week 本星期。 the current year 今年。 the 10th current [curt.] 本月十日。 current account 往来存款账;【法律】交互计算。 current English 现代通行英语,日常英语。 current handwriting 草书。 current money 通行货币。 current rate 现价,成交价。 current thoughts 现时代思潮。 pass [run, go]current 通用,流行。 n. 1.水流;气流;电流。 2.思潮,潮流;趋势,倾向。 3.进行,过程。 a cold current 寒流。 the Japan current 日本海流,黑潮。 the great current of events 天下大势。 a density 密着(海)流。 an alternating [a direct] current 【电学】交[直]流电。 current of air 气流。 current of time [the times] 时势,时代潮流 (go [swim] with [against] the current of the times 顺应[违反]时势)。
Also , a calculation model for instantaneous branch current is proposed , and is verified by examples . che lizhi ( power system and its automation ) directed by prof 提出了计算电力系统任意时刻分支短路电流的计算模型,并通过实例验证了算法的正确性。
Kirchhoff ' s current law is applied to describe the relationship of branch currents that flow into or out a same node and it reveals the essential law of conservation of electric charges 基尔霍夫电流定律用来描述流入或流出同一个节点支路电流的关系;它揭示了电荷守恒定律的本质。
Basic principle of the simplification is detailed . feed lines with branches is also discussed . the proposed approch is verified by branch current based power flow calculation 论述了简化分析的基本原理,并采用支路电流法验证了该方法的可行性,还讨沦了带有支线的馈线的处理问题。
In a circuit system , the elements , that have a same current exactly , compose a basic branch , and the current flowing through the elements , is called a basic branch current and is simply called a branch current 在电路系统中,流过相同电流的各元件组成一条基本支路,流过这些元件的电流称为基本支路电流,简称支路电流。
This paper deeply analyses the power flow mothod of a distribution network , and chooses the branch - current method which has a high computation speed and good convergent based on the fact situation of the optimization problem . also , the mechanism prove on convergence of branch current is presented 本文对配网潮流方法进行了较系统深入的理论分析,并根据优化问题实际,选择确定了收敛性好、计算速度快的支路电流计算方法,并给出其收敛性机理证明。
For this reason , the general algorithm on fault calculation is researched in protection relay setting , and fast calculation on branch current is put forward for the first time in this paper . so the complete and quick fault analysis is provided for protection setting 为了满足工程实际需求,本文作者积极探索了面向继电保护整定计算的通用故障分析算法,首次提出了适用于任意故障类型的支路电流的快速算法,为保护定值的整定计算提供了完备而快速的故障分析方法。
This paper discusses and analyses several principal points affecting the performance of regular distance protection , such as the fault resistance , the branch current , the zero sequence mutual coupling and so on . then some concrete application of adaptive concept to distance protection will be analyzed and studied 本文对于影响常规距离保护性能的一些主要因素如过渡电阻、分支电流和零序互感等进行了分析和讨论,在此基础上对于自适应思想在距离保护上的一些具体应用进行了分析和研究。
A new viewpoint to observe the relation of bus voltage , bus current injection and branch current of the network considering branch mutual inductance has been provided in this paper . the process of building the z - matrix of a large - scale power network is set forth in particular in this paper . and the method is employed in the fault computation system successfully 本文为了从算法上提高故障计算的速度,在完全计及支路互感的前提下,利用节点注入电流与支路电流以及支路电流与节点电压的关系,提出了一种能够统一处理互感和无互感线路、快速形成大规模电网节点阻抗矩阵的新方法。
But due to the existence of the fault resistance , the branch current , the zero sequence mutual coupling and so on , the apparent impedances and protection scope of distance protection will change , thereby affecting the performance of distance protection and the safety operation of power system 然而,由于过渡电阻、分支电流和零序互感等因素的影响,会改变距离保护测量阻抗的大小,造成距离保护动作范围的扩大与缩小,从而影响距离保护的性能,威胁电力系统的安全运行。