母线

A single-pole HVDC system is simulated by using the PSCAD and MATLAB software,so the distance between inverter's bus and fault location is obtained.

用PSCAD(Power Systems Computer Aided Design)和Matlab软件进行了单极HVDC系统仿真分析，得到了发生故障后初始电流行波波头到达两侧的精确时间，进而得出了故障点到达逆变侧母线的距离。

This paper has introduced the current situations of the development of the busbar protector and technology at present at first, and then the application of digital signal processing technology in relay protection.

第1章介绍了目前母线保护装置及技术的发展现状，以及数字信号处理技术在继电保护中的应用现状。

To study the effects of no load voltage step response index on disturbance quality of power system for self excited shunt excitation system, this paper analyzes the types of power system disturbances and disturbing qualities, establishes the different groups of self excited shunt excitation system according to the different overshoot in identical rise time and the different rise time in identical overshoot.

1电力系统扰动项目的选择为研究自并励静止励磁系统的发电机空载电压阶跃响应指标对电力系统扰动品质的影响，首先确定电力系统扰动种类。选择了反映大干扰稳定和小干扰稳定的发电机近端三相短路0.15切线路、远方三相短路0.15切线路、高压母线突加无功负荷、甩负荷、小干扰振荡模式计算等5个项目。

Based on particular analysis of characteristic of presented scheme on different working condition, the setting rule is given.

利用正、反方向故障时补偿电压与母线电压故障分量的变化规律，本文提出了基于补偿电压故障分量的方向判别原理。

Cut a female screw thread with a tap.

用活栓切一条螺母线。

According to the fault data information and expert"s field knowledge, the system can distinguish the lines and buses which fault occurs in, also judge the line"s fault type and the circuit breakers and relayss action performance and give the maintenance suggestion.

系统能在电网发生故障时，根据故障数据信息和专家领域知识，判别发生故障的线路、母线，线路的故障类型以及断路器、保护的动作性能，并给出维修建议。

This paper presents design Process of control system of diesel generating set for SS1H 70F marine oil rig,points out the principle of design select model,and calculates capacity of bus design for power system and protection of generating set.By application of model DYT 3 voltage regulator that made in home,the problem of generating set parallel connection about two kinds of different standards,capacity,rolational speed,electric speed regulator is solved sucessfully.It is pained good parallel connection ru...

介绍了SS1H 70F型海洋钻机柴油发电机组控制系统的设计过程，提出了设计选型的原则，并对发电系统母线设计和保护进行了计算，应用自行研究的DYT 3型电压调节器成功地解决了 2种不同规格、不同容量、不同转速、不同电子调速器的发电机组并网问题，并网运行指标好，为钻机电传动系统的改造提供了技术经济可行新思路

In order to reduce the production process mill system power supply system of the impact of power quality,improve the stability of equipment to meet national standards and power quality of the electricity sector of the target requirements,in the rolling mill factory production lines to install a set of 30kv side bus SVC.It restrained the molestations of power plants lines,make important roles of improve power quality,improve power factor,and level off the run level of electric web.

为了减轻轧机系统生产过程中非线性冲击负荷对供电系统电能质量的影响，提高设备运行的稳定性，满足国家标准和电力部门对电能质量指标的要求，在生产线30kV母线侧，装设了一套静止无功补偿装置，结果是把生产线对供电系统电能质量的干扰抑制到一个较低水平，对改善供电系统的电能质量，提高功率因数，稳定电网运行水平起到了极其重要的作用。

Then compare the5 drafts from these aspects such as reliability, flexibility andeconomy, and keep two more reasonable plans than others. The shortcircuit current calculation is carried on.. And main electricequipments including circuit breakers、disconnectors、bus、insulatoretc are choosed according to the result of short circuit currentcalculation. Finally the economy of these two plans are comparedand main electrical connection plan is determined.

然后对这五种方案进行可靠性、灵活性和经济性比较后，保留两种较合理的方案，对这两种方案进行短路电流计算；接着是根据短路电流计算结果进行主要电气设备的选型以及校验，包括断路器、隔离开关、母线、绝缘子等；最后再由经济性比较确定最终的电气主接线方案。

From the burden increased aspect clarify set upthe necessity of station, then pass to drew up to set up generalizeof transformer substation and line direction to consider, and passto analysis of carry the data, safety, economic and dependableconsider and made sure the 110 kV, 35 kV, 10 kV and station useelectricity of lord connect line, then again through burdencalculation and power supply scope made sure main number, capacityand model number of the transformer set, also in the meantime makesure the station uses capacity and model number of transformer,end, according to biggest keep on work electric current and shortcircuit calculating of calculation result, to the high pressureRong break a machine, insulate a switch, female line, insulate sonand wear a wall set tube, electric voltage with each other feelingmachine, electric current with each other the feeling machinecarried on choose a type, thus completed a 110 kV electricity apart of design.

本文首先根据任务书上所给系统与线路及所有负荷的参数，分析负荷发展趋势。从负荷增长方面阐明了建站的必要性，然后通过对拟建变电站的概括以及出线方向来考虑，并通过对负荷资料的分析，安全，经济及可靠性方面考虑，确定了110kV ，35kV ，10kV 以及站用电的主接线，然后又通过负荷计算及供电范围确定了主变压器台数，容量及型号，同时也确定了站用变压器的容量及型号，最后，根据最大持续工作电流及短路计算的计算结果，对高压熔断器，隔离开关，母线，绝缘子和穿墙套管，电压互感器，电流互感器进行了选型，然后进行配电装置和平面布置的设计以及防雷的设计，从而完成了110kV 电气一次部分的设计。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。