查询词典 tie line

Power flow calculation of power tie line s is a paramount basic computation for studying the steady operation of power system.

电力联络线潮流计算是研究电力系统稳态运行状态的一种最主要的基本计算。

This paper studies the simulation method of tie line power flow control among areas of an interconnected network in load flow calculation.

本文对潮流计算中互联电网各区域间的联络线功率控制的模拟计算方法进行了研究。

At first, based on the results of the field tests and studies, this paper indicates that there are two kinds of low frequency power oscillations on the weak tie line: one is caused by negative damping, and belongs to the free oscillation; the other is caused by periodic load disturbances and periodic adjustments, and belongs to the forced oscillation.

首先，本文根据现场试验和研究结果指出，互联系统的弱联络线上存在两类性质不同的低频功率振荡：一类是由负阻尼引起的，属于自由振荡；另一类是由于系统周期性负荷扰动或振荡调节等引起的，属于强迫振荡。

The elements to be controlled include system frequency , tie line flows, line currents, equipment loading and voltage.

所要控制的要素包括系统频率、联络线潮流、线路电流、设备的负荷和电压。

The main model pays attention to the unascertainment of distribution network. Based on the introduction of path matrix, path sub-matrix and feasible tie-line set, the tie-line model is developed.

在定义了路径矩阵、路径子矩阵和可行联络线后，建立了联络线模型，通过增加联络线来保证重要负荷的供电可靠性。

In order to maintain the system stability the constraint is such that the phase-angle difference between any two generating sources in the to-be-interconnected electrical power systems should not exceed a permissible value, The tie line is selected based on the minimum annual cost, with the costs of both the new tie line and the necessary network expansion in the original electrical power systems...

该模型以联合电力系统中各电源点之间相角差均不超过允许值作为保持系统静态稳定性的约束条件，在按年费用最小选择联络线方案时，同时计及了新建的联络线和原有电力系统中网络的扩建。文中还给出了某两个电力系统联网的分析计算结果。

Accordingly,a bi-level optimization method based on two-tie connection mode is proposed to optimize the tie line s in the distribution network.

针对该问题，提出了一种基于两联络接线模式的分阶段双层联络线优化方法。

According to the basic concept of tie line power control among areas and refering to some methods in load flow programs introduced from developed countries, this paper presens a calculating method of tie line power control among areas and the programs.

根据区域联络线功率控制的基本原理，并参照了国外一些潮流程序中的处理方法，提出了本文所采用的区域联络线功率控制的计算方法，并编制了相应的计算机程序。

Firstly, according to the operating features of tie-line, the key decision factors deciding the operating mode of tie-line are extracted, a rule base of definition of tie-line operating modes is established and a discriminative model of tie-line operating modes is proposed; then during the design of the interface with data of EMS, the flow sheet for tie-line power flow monitoring is optimized; finally, an on-line monitoring system for tie-line power flow, which possesses the functions such as definition of tie-line operating mode rule base, transmission line operating mode monitoring and tie-line power flow monitoring, is developed, and the developed system can provide report forms of statistical analysis on transfinite record of tie-line power flow.

结合电网断面的运行特点提取了决定断面运行方式的关键因素，建立了断面运行方式定义规则库并提出了断面运行方式判别模型。在与EMS的数据接口设计中，对断面潮流监测流程进行了优化。在此基础上开发的电网断面潮流在线监测系统具有断面运行方式规则库定义、线路运行状态监测及断面潮流监测等功能，还可提供断面潮流超限记录的统计分析报表。

Because whole rock samples always contain some retrograde minerals,the tie line of garnet + whole-rock in Sm-Nd isochron diagram or the tie line of phengite + whole- rock in Rb-Sr isochron diagram can give a geologically meaningless age.

由于全岩样品总是含有数量不等的退变质矿物，因此石榴石+全岩 Sm-Nd 法或多硅白云母+全岩 Rh-Sr 法将有可能给出无地质意义的年龄。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。