电网

This paper presents a novel model of short-term trade planning in a competitive electricity pool, with the settlement rules involved in the objective function. Moreover, the concept of system marginal price is improved so as to reflect the reasonable distribution of benefits between transaction centers and suppliers. And the justice criterion from the standpoint of power plants is proposed, as well as the optimality criterion from the standpoint of transaction centers.

文中结合我国的实际情况，建立了以电网为核心的买电型短期交易计划的模型，提出了兼顾电网交易中心与发电商之间利益合理分配的浮动边际电价的新概念，并从电厂的角度给出了短期交易计划的公平性准则，从电网交易中心的角度给出了最优性判定准则。

At present, there are some instances in oilfield distribution networks, such as the improper selection of transformer capacity, the current density being overhigh, which overload the reactive power, reduce the power factor, increase the network loss, and decline the voltage quality, consequently the capacity of the networks cant be sufficiently exploited.

目前油田配电网普遍存在变压器容量选择不当、某些线路的电流密度过大等情况，导致配电网传输无功负荷过大、运行功率因数偏低、网损增加、电压质量下降、电网容量不能得以充分开发。

The controller measures and monitors parameters of electric network, then saves preterit data of 60 days which is the evidence of the running status of electric network. And then the running curve of parameters is gained by background data process of computer.

控制器具有历史数据存储功能，能够对电网运行状况进行监测，通过后台软件的分析处理给出各项电网参数的运行曲线，可方便地对控制器性能和电网运行状况作出评估。

A kind of automatic reactive compensation control circuit in network designed by making use of Hall power sensor has already found its application to practice thus realizing the on-line automatic detection and the optimal compensation of network reactive power.

一种利用霍尔功率传感器设计的电网无功功率自动补偿控制电路已在实际中得到良好的应用，实现了电网无功功率的在线自动检测，从而达到电网无功功率的最佳补偿。

The investment of the constant capital is 319 thousand yuan, the investment of the flow capital is 50 thousand yuan The money includes self-raised money 269 thousand and the applied loans 100 thousand yuan.

该产品用于提高电网的功率因素，降低电网中的高次谐波含量，提高电压质量，故该产品满足城乡电网中用量最大的一种电容器，市场需求量极大。

With the rapidly development of the Fujian electrical network, especially the tie line power exchanging with the East China electrical network, the mode and status of power system operation become more complex.

近年来，福建电网取得了长足的发展，实现了与华东电网的交流联网，电网的运行方式和运行工况更加复杂，增加了电力系统安全稳定和故障分析的难度。

In this paper, quantitative analysis on exchange between inverter unit of DVR and grid is made when voltage temporarily drops. Then it studys detailedly the relationship of output voltage and power amang inverter unit of DVR ,grid and load.Finally Matlab simulations of all the compensation method are made.

本文定量分析计算电网电压暂降时DVR 逆变单元与电网的功率交换情况，详细研究逆变单元在各种补偿策略下的输出电压和有功功率与故障前后电网电压、负载电压和参考相量的具体关系，最后通过Matlab 仿真研究各补偿方法。

Then it studys detailedly the relationship of output voltage and power amang inverter unit of DVR ,grid and load.Finally Matlab simulations of all the compensation method are made.

本文定量分析计算电网电压暂降时DVR 逆变单元与电网的功率交换情况，详细研究逆变单元在各种补偿策略下的输出电压和有功功率与故障前后电网电压、负载电压和参考相量的具体关系，最后通过Matlab 仿真研究各补偿方法。

Distribution network planning work complexity manifests dominatingly on large-scales, multi-factors of uncertainty and inaccuracy, involving wide domains and so on. Only depending upon planning-workers' planning experience, it is unable to be satisfied for the requirement of modern DNP.

配电网规划工作的复杂性突出表现在具有规模大、不确定、不精细、因素多和涉及领域广的特点，仅仅依靠规划工作者的规划经验进行配电网规划已经远远不能满足现代配电网规划的要求。

ABSTRACT Distribution network planning work complexity manifests dominatingly on large-scales, multi-factors of uncertainty and inaccuracy, involving wide domains and so on. Only depending upon planning-workers'planning experience, it is unable to be satisfied for the requirement of modern DNP.

配电网规划工作的复杂性突出表现在具有规模大、不确定、不精细、因素多和涉及领域广的特点，仅仅依靠规划工作者的规划经验进行配电网规划已经远远不能满足现代配电网规划的要求。

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。