查询词典 grid transmission system

Trade mode partrecites the operation model power transmission market and detailedly discusses theprice system of power transmission market; on the basis of electrovalence system ofpower transmission, it calculates and analyses province-stridden power transmissionexpenses combining the actualities of countrywide provincial trade and the actualcircumstances of provincial power transmission of middle-Chinese power grid; itrelates to the mode of big power consumers directly purchasing electricity andfinance instrument of power transmission market.

交易模式部分中叙述了输电市场的运营模式，对输电市场的价格体系做了详实的论述和相应的探讨；在输电电价体系的基础上，结合全国省间交易的现状和华中电网跨省输电的实际，对跨省输电费用进行了相关的测算和分析；涉及了大用户直购电模式和输电市场的金融工具。

The transmission grid of power system is used to connect power supply to load.

输电网在电力系统中担负着将电源与用户连接起来的任务。

Firstly, the transient stability of the modes by which some kinds of huge power suppliers are connected with AC power grid is analyzed and compared in detail; then a detailed transient stability simulation of a certain large-scale demonstration system is performed; finally some helpful conclusions are obtained: in the general situation, the bundling power transmission mode is favorable to increase the stability of sending system; if it is helpful to evidently increase the inertia of the equivalent leading group, the mode that connects the huge power supplier with sending system will be helpful to enhance the stability of sending system, however it is necessary to perform simulation and analysis while these principles are applied to FACT systems.

首先从机制上对几种大电源接入交流系统方式的暂态稳定性进行了详细的分析和比较；然后对大型算例系统进行了详尽的暂态稳定仿真；最终得出了一些有用的结论：一般情况下，打捆送电方式有利于提高送出系统的稳定性；如果有助于显著增加领前群的惯量，则与送端系统相联的方式也有助于提高送电系统的稳定性，但仍要结合具体系统进行分析。

Accordingly, strengthening the construction of skeleton grid is the ultimate resolvent to ensure secure-and-reliable operation of power system. However, an economic and valid approach to strengthen the skeleton grid is to construct the ultra high voltage transmission lines.

因此，加强骨干网架建设是保障系统稳定运行的根本解决办法，而加强骨干网架经济而有效的途径是建设特高压输电线。

On December 28, 2004, thirteen faults have happened successively, a large area of ice flashover of 500 kV power system happened and seven 500 kV transmission lines tripped out due to the influence of the sleety climate in central china power grid.

2004年12日28日，由于雨雪天气影响，华中500kV电网发生大面积冰闪，先后发生13次故障，7条500kV线路相继跳闸，为华中电网历史上罕见的事故。

The impacts of the ultra high voltage AC/DC grid on Fujian power grid are analyzed in this paper. The security and stability of Fujian power grid and the interactions among the AC and DC system are studied under the single/double faults of EHV AC transmission lines and monopolar/bipolar block faults of EHVDC system near converter station.

中文摘要：分析了交、直流特高压电网对福建电网安全稳定的影响，研究了特高压交流电网、特高压直流系统发生故障时福建电网的安全稳定性以及受端换流站附近交流电网单一或严重故障对直流系统的影响及系统安全稳定水平。

Considering the geographic dispersive distribution of large-scale offshore wind farms and the feature that doubly-fed wind power generators or direct-driven/ hybrid-driven wind power generators are mainly adopted in them, a power transmission topological structure of VSC-HVDC system corresponding to the connection offshore wind farms with power grid is proposed, and related control strategy is designed.

针对大规模近海风电场地理分布上高度分散以及主要采用双馈式或直驱/半直驱式风电机组的特点，提出了相应的电压源型变流器的高压直流(voltage source converter based HVDC，VSC-HVDC)并网传输拓扑结构，并设计了相应的控制策略。

With the rapid development of the electric power industry, the utilization of the continuously increased capacity of the generator units, the extraordinary large power grid, and the extra-high voltage transmission network etc., the operation and the management of power system is becoming more and more complex.

电力工业的飞速发展，单机容量的不断增加，电网规模的日益扩大，使得电力系统的运行和管理越来越复杂。

The authors analyze the operation characteristic of distance protection of transmission line connecting wind farm with power grid under the variation of parameters such as the amplitude ratio of electromotive force at both sides, the phase difference of electromotive force at both sides, equivalent impedance of sources, system frequency and so on; based on the real-time current and electromotive force at wind farm side as well as the information of wind power generators participating power generation, a method to adaptively set the operation boundary of distance protection by use of the information at wind farm side only is proposed.

文章分析了风电场和电网联络线的距离保护随电源电势幅值比、电势相位差、电源等效阻抗、系统频率等参数变化时的动作特性，并基于风电场侧的实时电流和电势与参与发电的发电机信息，提出了仅利用风电场侧信息量自适应整定保护动作边界的方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了