供电质量

集合小波理论和ANN的优点，实现保护智能化，提高保护的选择性、灵敏性及可靠性，保证电网稳定，提高供电质量。

It collects the advantages of wavelet theory and ANN to realize the intelligent protection and promote the selectivity , sensitivity and reliability of protection , guarantee electric fence stability , improve the quality of power supply .

动态电压恢复器（DVR）是用来补偿电压骤降、提高下游敏感负荷供电质量的串联补偿装置，其良好的动态性能和成本上的相对优势使它成为目前治理供电电压骤降问题最经济有效的手段。

Dynamic Voltage Restorer ( DVR ) is a serial compensation device which will compensate the voltage-sag and improve the quality of power supply of sensitive load . Its fine dynamic function and relative lower cost make it the most operative and cost-effective method in nowadays voltage sag solvent methods .

同时为满足供电质量，华北区域制定的电网两个细则明确规定了参与AGC机组的负荷调节性能要求。

Two rules of grid for North China region that define the load regulation performance requirements of AGC units is proposed for the power quality .

随着用户对供电质量要求的进一步提高以及分布式供电系统的迅速发展，UPS并联系统获得了越来越广泛的应用。

With users ' increasing demand of high power quality and fast development of distributed power supply , UPS paralleling system is getting more and more widely used .

在实际工况中，三相电网电压的不平衡将会导致PWM整流器的输出电压产生偶次电压纹波，同时会导致网侧电流产生奇次谐波，从而降低电网的供电质量。

In the actual working condition , unbalancedness of three-phase input voltage will lead to even ripples at output voltage and odd harmonics at input current , and reduce quality of power supply .

为了提高微型燃机系统电能转换质量和供电质量，提出了高频PWM整流器自适应控制策略和基于阻抗变换的三相四桥臂逆变器解耦控制策略，研制了燃机控制系统和电力变换器系统。

In order to improve the quality of MTG power conversion and quality of power supply , the adaptive control strategy of high-frequency PWM rectifiers and the decoupling control strategy of three-phase four-leg inverters based on impedance transformation are proposed .

功率因数校正（PFC）技术不仅可以降低线路损耗、节约能源，还可以减小电网的谐波污染，提高电网的供电质量。

Power factor correction ( PFC ) technology can not only reduce power line losses , energy conservation , it can also reduce the harmonic pollution and improve the quality of the power supply .

供电质量扰动；电压骤降；ITIC曲线；经济损失计量。

Electric power disturbances ; Voltage sag ; ITIC curve ; economic loss of voltage sag .

数据表明，基于改进法的有源滤波器在改善电网供电质量方面较常规ip-iq法，至少提高了0.5个百分点。

The result shows that the active power filter with improved harmonic detection method can improve the quality of the power system at least 0.5 percentage than the one with ip-iq method .

介绍了具有交流发电、MMA（手工弧焊电源）等功能的新型电源，由于采用了微机控制的稳频、稳压电路，提高了供电质量和整机性能。

A new kind of multi-function power source for electricity generation and MMA is introduced 、 especially the steady voltage circuit and steady frequency circuit . Because of using the computer controlled technology , the supply wave quality and the instrument property are advantaged .

首先，手术室、重症监护病房（ICU）、心脏监护病房（CCU）等场所对供电质量和安全提出了更高的要求。

This article mainly deals with the following problems in electrical design of comprehensive ward buildings : First of all , surgery , intensive care unit ( ICU ) and coronary care unit ( CCU ) have higher requirements for power supply quality and safety .

特种电力用户及其对供电质量的要求

Sorts of Special Clients and Their Requirements of Power Supply Technique

发电厂负荷预测及供电质量

Forecast of the power plant load and quality of the power supply

完整认识供电质量，全面提高服务质量

Establishment of overall & complete understanding of power supply quality

供电质量和绿色电源

Power quality in the information society and green power supplies

利用浪涌抑制器和低次谐波滤波装置，可有效改善供电质量。

Surge suppressor and low-order harmonic filter can improve power supply quality .

除此之外，由于大多数非线性电力电子装置的功率因数较低，也会影响供电质量。

Besides , the low power factor also can affect the power quality .

发电厂供电质量监测考核系统

Power supply quality checking system for power plant

无线供电质量监测和用电稽查系统的设计

Design of Radio Power Supply Quality Supervision and Check on Use of Power System

谐波对供电质量及电网的可靠运行构成了极大的威胁。

Harmonics pose a grave threat to power quality and the reliability of grid .

新型架空配电系统自动化：提高供电质量和可靠性的有效方案

New Type of Distribution System Automation : as a Tool for Reliability Centered Performance

供电质量自动检测系统的设计

System Design of Power Supply Quality Automatic Detection

频率是军用电力系统最重要的供电质量指标之一。

Frequency is one of the most important performance parameter of military power system .

利用微型计算机改善电网的供电质量

To Improve the Quality of the Electricity Supply by Applying Microcomputer to the Electri-Net

面向供电质量提高的城市电网专项规划研究

Research on Special Planning in Urban Distribution System for Advancing Quality of Power Supply

谐波电流污染已经成为影响供电质量的重要问题。

Harmonic problems have become the important factor that affects the quality of power supply .

变电站运行情况直接影响电力系统的安全性及供电质量。

The running condition of substation affects security and supply quality of the power system .

这些负荷的非线性、冲击性和不平衡的用电特性，对供电质量造成严重污染。

Those equipment seriously pollutes the power resource for their nonlinear , impulsing , unbalance feature .

谐波是导致电力损耗增加，供电质量下降的重要因素。

Harmonic wave was the important factors that power consumption increase and quality of power supply reduction .

为了提高该发电系统的供电质量，具有更好的抗干扰能力，采用模糊控制器。

For improving the quality of power supply , fuzzy controller is used in this generator system .