查询词典 transmission line

Based on power line transmission characteristic, this thesis set up a power line model using theory of uniform transmission line; design low voltage communication simulation and experiment system based on the model.

本课题基于电力线传输特性的分析，应用均匀传输线理论建立了电力线模型，设计了以该模型为基础的低压电力线载波通信模拟实验系统。

Under the regelation condition, the basic reason is actually the transmission line regelation overload and the line non-uniform tensity about the major part electric transmission tower ,electric pole and the line breaking.

覆冰条件下引起绝大部分输电电路倒杆倒塔及线路断裂的根本原因是输电线路覆冰过载及线路不均匀张力作用所产生的结果。

By means of analyzing the difference between HVDC transmission line and traditional HVAC transmission lines, it is proved that it is not suitable to apply superposition principle to the power grid containing HVDC transmission lines, thus following conclusions are obtained: in the place near to HVDC transmission line the fundamental frequency fault component element should be not adopted; and there is definite relation between the maloperation of directional comparison pilot protection applied in practical project and the adoption of fundamental frequency fault component element.

通过分析HVDC的特性与传统交流系统的不同，证明叠加原理不能应用在含有HVDC的系统中，从而得出结论：在HVDC附近不应该采用工频故障分量元件，实际工程中的纵联方向保护误动作与使用工频故障分量元件有一定关系。

STATCOM installed in the long transmission line can support key nodes voltage and improve transmission capacity of the power system. So this paper discusses how STATCOM for controlling the transmittable power in the transmission line depends on the location of STATCOM in the network.

安装在长距离输电线上的STATCOM能够支撑输电系统关键节点的电压，提高系统输电能力，因此本文讨论了不同的安装位置对STATCOM调节线路传输功率的影响。

In recent years, lightning stroke is one of the important causes of the accidents that occur on transmission lines. With the increase of voltage grade of transmission line, the proportion of outages because of shielding failure also increases. Therefore, exactly evaluating lightning-withstanding level and shielding failure flashover rate of transmission line, is especially important for system service and stable operation.

雷击是引起线路故障的重要原因之一，随着电压等级的升高，由于绕击而引起的线路跳闸事故所占的比例也越来越大，因此准确评价线路的绕击耐雷性能对于电力系统的安全稳定运行有着重要的意义。

The thesis mainly concerns the following aspects: the relay protection and its trip-close circuit of two circuits transmission-lines are stand alone. The device has the ability of phase-trip that is owns transmission line single phase , 2 or 3phases fault only fault phase tripped.so as to making the power system contact as close as possible. The function of reclosing distribute into relay protection of line and breaker, so it is easy to get no-serious fault information of line protection and realize self-adapted multi pole reclosing. The breaker reclosing depend on the state of owns breaker andthe adjacent breaker. The criterion of serious fault and the sequence reclosing is simple and useful.

本项目具有如下特点：两回线的保护装置及跳、合闸回路完全独立；装置具有分相跳闸功能，即本线单相、两相、三相故障时均只跳故障相，使得故障时系统联系尽可能紧密；重合闸功能合理分配在线路保护和断路器保护中，充分利用了线路保护的信息实现无严重故障判别和分相顺序重合策略的自适应重合功能，由断路器保护根据断路器本身的工作状态和相邻断路器的配合关系实现重合出口；判断严重故障的判据及分相顺序重合闸原理简单合理，具有实用意义，降低了重合于永久故障对系统的冲击。

After power-flow calculation of 110 kV transmission line with open-phase fault, this paper addresses the precautions during long time operation of open-phase transmission line and main transformer, and analyzes the feasibility of load transfer of open-phase line in closed loop network.

文章通过计算 110kV线路单相缺相故障时的潮流情况，阐明了缺相线路及主变压器长时间运行时的注意事项，并对缺相线路能否合环倒负荷问题进行了分析。

Principle of non-communication complete transmission line UHS protection is proposed according to the effect of line trap and transmission line frequency dependant property on travelling wave.

2在行波原理方面，考虑行波产生的机理特别是线路阻波器、输电线路频率相关特性等的影响，利用行波波头的故障特征，提出了新的单端行波保护原理——无通信全线速动行波保护原理。

Through discussing further the reflective and refractive coefficients of line boundary, the features of line boundary are as follows: the attenuation of high frequency band (especially in band of line trap) of transient components generated by fault through line boundary is obvious, whereas the low frequency band (1~10kHz) components are hardly influenced. Moreover, the transient components below 100kHz should be adopted in purpose of outstanding the line boundary and weakening the transmission influence of transmission line.

通过对线路边界的透、反射系数的进一步分析发现：暂态信号的高频段穿越线路边界时将大为衰减，而低频段(1~10kHz)几乎不衰减；为弱化线路的传输影响而突出线路边界的作用，宜选用100kHz以下的信号分量。

Logistics and drying equipment: roller conveyor line, with transmission line network, the chain of transmission lines plate, hoist,(in all its forms and configuration) PVC belt line,(ring, straight-shaped, hand push, automatic) Qian pieces of line, cattle Taiwan eyes furnace cover, food drying furnace, Flue-curing Barn, the tunnel oven, Wasi Lu, ovens, and other tank.

物流及烘干设备：滚筒输送线、网带输送线、板式链条输送线、提升机、PVC皮带线、（环形、直形、手推、自动）扦件线、牛眼台；炉盖、食品烘干炉、烤房、隧道式焗炉、瓦斯炉、柜式烤箱等。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。