电网

The paper firstly sums up the relative theory and development trend of Decision Support system, mainly including the decision-making supporting function, the features, the structure and the major mission of DSS. Subsequently, the paper lays emphasis on the research of the electricity requirement, energy-exhausting analysis and network optimum programming method for the second oil-mining factory of Da-Qing oil field, and then provides the principle of the network programming and the framework for designing DSS according to the requirement of optimizing the layout of network, saving energy and timely supervising. Following the former analysis and design, the paper finally conducts the development and debugging of the Decision Supporting System based on the software engineering theory.

本文首先对决策支持系统的相关理论及其发展趋势进行了综述，重点介绍了决策支持系统的决策支持功能、决策支持系统的基本特征、决策支持系统的主要任务和决策支持系统的结构等；然后，对大庆采油二厂地面生产系统电力需求、能耗分析、电网框架规划优化方法进行了研究，针对优化网络布局、节省损耗以及实时监控的要求，提出了网络规划的原则、系统设计的基本思想，进而进行了系统总体结构、系统的模型库以及数据库的设计；最后，按照软件工程学的方法，在系统分析和设计的基础上，完成了整个系统的开发和调试工作。

In view of that, predictive method to calculate APF harmonic reference is proposed based on adaptive LMS algorithm. Optimum predictive strategy is also presented.

本文针对传统LMS算法的缺陷，并结合电网电流的特点，提出了三点改进措施，这些改进都极大地提高了自适应预测算法的性能。

The main funtions and stability assessment solutions based on phasor measurements are provided. The function of online oscillation monitoring is described in detail. This paper also presents some system applications and related experiences in European and Asian power grids.

本文主要介绍新近开发的广域监测、控制和保护系统的设计框架，基于广域测量的系统稳定性评估功能模块，以及该系统在欧洲和亚洲部分电网的应用和运行经验。

The results in this thesis provide a new method to solve problems of interaction effects and low frequency oscillation in power system.

这也为研究电力系统中各个控制器的交互作用和互联电网的低频振荡抑制问题提供了新的解决方案。

PFS3000 protective and fault information management system realizes transmission of protection information and oscillography files to master-control room, forwarding protection events as digital inputs to control and supervisory system, and receiving contact signals from control and supervisory system.

PFS3000 电网继电保护及故障信息管理系统（以下简称"青岩保护子站"）实现了保护信息和波形文件上传到主控室，将保护事件按遥信转发到监控系统，从监控系统接收转发过来的硬接点信号。

The paper presents the most efficient means to prevent the occurrence of resonance overvoltage often happening in extinction coil earth ed networks, namely,overcompensation pattern, after analyzing shift voltages in formal operation and broken wire condition.

摘 要：针对消弧线圈接地电网中普遍存在的谐振过电压问题，分析了正常运行及断线故障时各种补偿方式下位移电压的大小，得出防止产生谐振过电压的首要方案是：消弧线圈采用过补偿运行方式。

A new type of overcurrent protection ,phase-sensitive overcurrent protection based on sampled value of current,is suggested in this paper.

针对中低压电网中过流保护存在灵敏度低的缺点，提出了一种新型微机式过电流保护即基于电流采样值的相敏过电流保护，并分析了它的基本原理、具体的实现方法及可靠性问题。

The powers that be want to promote it for monetary and environmental reasons, not to mention providing some relief to our overtaxed national electric grid system.

权力，是希望推动金融和环境的原因，更不用说提供一些帮助我们超额全国电网系统。

The paper accomplishes the adjustment and test to the whole overvoltage online monitoring system.

本论文对设计完成的高压电网过电压在线监测系统进行了调试和校正。

The test results indicate that the acquisition system has high accuracy and stability to satisfy the requirements of overvoltage monitoring for power system.

实验测量结果表明，采集系统测量精度高，工作稳定可靠，满足电网过电压监测要求，达到了预期设计目标。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。