电网

Base on the research of the Low-Voltage in ShunDe power distribution system, according to the principle of comprehensive disposure.

本文通过收集多个供电所配电网状况的资料，分析、归纳出造成配电网电压偏低的各种因素，根据各因素形成的原因、权重，结合综合治理的原则，提出改善电压质量的若干措施以供参考。

With the utilization of global efficiency model, a new efficiency evaluation model with electric distance matrix is proposed, and the efficiency of east and central China power grid is evaluated.

引入了复杂网络效能模型，提出了基于电气距离矩阵的效能评估方法，对我国华东电网和华中电网在连锁故障中的效能变化进行了仿真分析。

This paper has discussed the fundamental principle of intelligent decision support system for DNP based upon GIS and its main structure scheme, and emphatically studied GIS methods applying to DNP.

本文在论述研发的基于GIS的配电网规划智能决策支持系统的基本原理及总体结构方案基础上，着重研究该系统中将GIS用于配电网优化规划的方法。

In a word, this paper main work is as following:(1) Through analyzing the fundamental principle of decision support system, the universal structure scheme of IDSS for DNP based upon GIS is put forward. The system mainly includes sub-systems of history information analysis, load forecasting integrated analysis, substation planning, distribution network structure planning integrated analysis and so on.

概括起来，本文的工作主要包括以下几部分：(1)通过对决策支持系统的基本原理分析，提出了基于GIS的配电网规划智能决策支持系统的总体结构方案，主要包括历史信息分析子系统、负荷预测综合分析子系统、变电站规划子系统和配电网网架规划综合分析子系统等。

So exploiting a set of intelligent decision system could not only relieve labor intensity of planning-workers improve scientific decision level of DNP, and it inevitably has important academic and realistic meaning.

因此，开发一套配电网规划智能决策系统，不仅可以减轻规划工作人员的劳动强度，而且可从整体上提高配电网规划的科学决策水平，具有重要的学术和现实意义。

With the development of energy conversion technology, the PWM rectifier has attention much focus in the field of power electonics. Because of the function of harmonic elimination and power factor correction, the PWM rectifier can be used as an ideal network between equipment and power system.

随着绿色能源技术的发展，PWM整流技术成为电力电子技术研究的热点和亮点，PWM整流器可以成为理想的用电设备或电网与其他用电设备的接口，因为它能够实现电网污染治理和可调节功率因数。

In this paper, a novel Crowbar control strategy is proposed to limit the over current in the rotor and the over voltage of the DC bus as well as the transient oscillation of the electromagnetic torque. Moreover, a capacitive current is injected into the grid to assist the recovery of the grid voltage.

文章提出了一种Crowbar控制策略，能有效抑制转子过电流、直流母线过电压以及电磁转矩的振荡，并可向电网注入无功电流以帮助电网电压的恢复。

This paper studies the influence of country economy guideline in power demand. According to identifying the main economy and society factors in affecting the change of Fujian power demand, the power demand forecast model is proposed. And the demand curve models fitting for diversified users are built by researching the influence of electrovalence to power demand.The influence of demand side management in load characteristic of Fujian power system is analysed.Used the arithmetic of modifying the history load curve, this paper forecast the changing and development trend of Fujian load characteristic.

本文研究了国民经济指标对电力需求的影响，通过识别影响福建省电力需求变化的主要经济社会因素，建立电力需求预测模型；研究了电价变化对电力需求的影响，对各类用户建立适合各自特点的需求曲线模型；分析了需求侧管理对福建电网负荷特性的影响，采用历史负荷曲线修正法，预测了福建电网负荷特性的变化发展趋势。

In energy loss calculation, a method named equivalent resistance is introduced.

电能损耗计算中运用等值电阻法计算电能损耗，它将配电网中由线路和变压器绕组产生的可变损耗等价为两个等值电阻上的损耗，同时根据实际电网中负载的变化对这两个电阻进行修正，最后计算出网络的电能损耗。

In the first model, we laid emphasis on the problem of the exterior incentive management mechanism between network and province corporations.

其中，通过建立区域电网公司内基于团队合作的激励模型，研究区域电网公司内网—省公司间的管理机制设计。

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。