电网

It either can be started by fault diagnosis, which can assist to make decision after accident, or can be started by static security analysis of the power system, which can be used to make the accident prefiguration and compile the fault preview.

本文研究并实现了一种在线应用的地区电网故障恢复系统，该系统既可以由故障诊断程序启动，用于在线辅助事故后的调度决策，也可以由电网静态安全分析程序启动，用于做事故预想和辅助编制事故预案。

According to the running and practice of north China grid company limited ,this paper discussed the problem of the network structure of FIMS and the radical function of main station.

根据华北电网运行与建设的实践，本文概述了华北电网故障信息系统的组网方式、华北网调主站的基本功能。希望本文能够为兄弟部门提供一些参考。

The decision support system Which uses the ratiocinative technology basedon model is researched mainly in this paPeY, at the saxne time, considering theactual utility of the system and the opefation detecting of the power network, theoperation detecting of the power network and the decision support are combinedaccording to the actual detecting data.

本文主要研究采用基于模型推理的技术完成决策支持系统，同时为了系统的实用性，考虑了对电网的运行的监测，以实际监测数据为基础，将电网运行的监测与决策支持结合一起。

In order to ensure that self-compensating devices for reactive power work stably and reliably in low-voltage electric power system, this paper introduces a new method and steps of selecting compensating devices by comparing their types, based on the theory of reactive power in non-sinusoidal alternating circuit.

产生谐波的根本原因是电力系统中器件、设备的非线性，即使供给这些器件、设备的电源是理想的正弦波形电压，电网供给它们的电流也是非正弦波形，即产生了谐波电流，当谐波电流流过线路后，产生谐波压降，使电网电压失真。

Furthermore, a distribution simplifying method is also proposed to reduce the length of chromosome and enhance the efficiency of the algorithm. The reciprocal value of active power losses is taken to be the fitness function, which will be simple and effective.

该遗传操作策略克服了现有遗传算法在配电网重构中应用时产生大量不可行解的不足，通过简化配电网结构，减少GA染色体的长度，从而进一步提高其计算效率。

In electrical power systems,the network reconfiguration of distribution systems is a very important way to save energy.

在电力系统中配电网的重构是配电网降低网络损耗的重要途径。

The low frequency digital phase reflectoscope reflector in the industrial field is the general measuring tool which uses frequently, for instance the electrical network incorporation switches on when the electrical power system, requests two electrical network's electrical signals to be the same, between this request precise survey two power frequency signal phase difference.

低频数字式相位测试仪在工业领域中是经常用到的一般测量工具，比如在电力系统中电网并网合闸时，要求两电网的电信号相同，这就要求精确的测量两工频信号之间的相位差。

We investigate a deterministic,conservative,undirected,and critical height sandpile model with dissipation of an energy at boundaries that can simulate avalanche dynamics.

通过研究如何用沙堆模型来描述电力系统的自组织临界性，提出了先建立各网省局等规模稍小电网的实时动态沙堆模型从而形成一个沙堆群的模型来模拟整个全国电网的设想。

This thesis concentrates its attention on two problems - the stability analysis of the coordination of the relay protection and automatic devices, and the probability of self-excitation in South China Power System through time domain simulation.

本论文通过时域仿真的分析方法研究西北750kV系统保护和自动装置的配置以及南方电网复杂的长距离交直流联合输电系统"自激"这两个涉及电网稳定性的问题。

In the generation electricity market mode, the net companies will minimize the cost of purchasing electricity while shill ensuring the security of the system operation and power quality.

在发电侧开放的电力市场下，电网公司如何保证电网运行的安全性和电能质量的前提下，实现总体购电费用最小是电力市场情况下电力系统运行的一个重要内容。

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。