电能质量,power quality
1)power quality电能质量
1.The development of data acquisition card in on-line monitoring system ofpower quality based on Windows CE;Windows CE下电能质量在线监测系统数据采集卡开发
2.The application of nonlinear PCA in synthetic evaluation ofpower quality;非线性主成分分析在电能质量综合评估中的应用
3.An approach to the extraction and classification of feature vector forpower quality based on wavelet;一种基于小波变换的电能质量特征量提取及分类的方法
英文短句/例句
1.Grid Power Quality Commitments and Grid Power Quality Assessment in France法国电网电能质量承诺和电能质量评估(英文)
2.Quality of electric energy supply-Admissible deviation of supply voltageGB12325-1990电能质量供电电压允许偏差
3.Investigations on Power Distubance Classcification and Power Quality Conditioner in Distribution System;配电网络电能扰动辨识与电能质量调节研究
4.Quality of electric energy supply-Admissible voltage fluctuation and flickerGB12326-1990电能质量电压允许波动和闪变
5.Quality of electric energy supply--Harmonics in public supply networkGB/T14549-1993电能质量公用电网谐波
6.The Study of Power Quality in Electricity Market;电力市场环境下的电能质量问题研究
7.Study on Power Quality Evaluation under Power Market Environment;电力市场环境下的电能质量评估研究
8.Reinforce user harmonious waves management to ensure grid power quality;加强用户谐波管理 保证电网电能质量
9.The Testing and Analysis of Power Quality in Traction Substation牵引变电所电能质量治理测试与分析
10.Effects of Electric Railway on Power Quality电气化铁路导致电能质量问题的研究
11.Research on Electric Power Quality Monitoring System in Wind Generation风力发电中电能质量监测系统的研究
12.Design of fuel cell based power quality control device基于燃料电池的电能质量控制器设计
13.Impact of Electic Railways and Wind Power Generation on Power Quality of the Grid电气化铁路及风电对电网电能质量的影响分析
14.High Performance Power Quality Analyzer Based on ARM＋Linux;基于ARM＋Linux的高性能电能质量分析仪
15.Wind Turbine Power Quality Measurement System Based on PC Measurement Instrument基于PC测量仪器的风电机组电能质量测试系统
16.Electricity Pricing Method Considering Power Quality Factors;计及电能质量因素的电能定价方法研究
17.Study on the Power Quality Management in Power Supply Company and Energy Saving and Loss Reducing Problems;供电企业电能质量管理与节能降耗问题研究
18.Studies on Power Quality Conditioner Based on SCES;基于超级电容器储能的电能质量调节器研究
相关短句/例句
electric energy quality电能质量
1.Justification and feasibility of establishingelectric energy quality market;建立电能质量市场的合理性和可行性
2.Application and analysis ofelectric energy quality on-line monitoring system in Guyuan regional grid;固原地区电网电能质量在线监测系统的应用与分析
3)electric power quality电能质量
1.Analysis and evaluation on theelectric power quality of wind farm;风电场电能质量分析与评估
2.Improvement onelectric power quality of mine electric power network base on user s electric power technology;基于用户电力技术的矿业电网电能质量的改善
3.Measuring and time-frequency analysis ofelectric power quality disturbance signal with Meyer wavelet transform;采用Meyer小波变换的电能质量扰动信号的检测与时频分析
4)electrical energy quality电能质量
1.Effects of PLC onelectrical energy quality and electric fittings;PLC对电能质量和电气设备的影响
2.Objective To research the influence ofelectrical energy quality descend on error rate and safety traffic of medical equipment.目的研究电能质量下降对医疗设备的故障率和医疗设备安全运行产生的影响。
3.The fluorescent lamp flicker phenomenon induced by the voltage fluctuation that was brought about by voltage source containing interharmonic component was an important problem ofelectrical energy quality.含有间谐波成分的电压源引起的电压波动造成的荧光灯闪变现象是电能质量方面的一个重要问题。
5)quality of electric energy电能质量
1.Capacitors in parallel are reactive compensators commonly used at present in power supply network to increase power factors to improvequality of electric energy.并联电容器是目前电网中普遍应用的无功补偿装置,用于提高功率因数,改善电能质量。
2.Voltage is one of the important reference standards ofquality of electric energy.在电网中安装足够的无功补偿电容器 ,并优化无功补偿 ,使无功就地平衡 ,能减少无功功率长距离输送 ,充分利用设备的输变电能力 ,提高电网电能质量 ,降低电网网损 ;有利于提高供电企业经济效益和社会经济效益 。
6)energy/power quality电能/电能质量
延伸阅读
电能质量电能质量electric power qualityd lorlrleng Zh一110，〕g电能质t(eleetriC power quality)衡量电力系统对用户供应电力的频率、电压、波形是否符合规范条件。在一个理想的交流电力系统中，电能是以一恒定的工业频率(50Hz或60Hz)和正弦的波形，按规定的电压水平向用户供电。在三相交流电力系统中各相电压和电流应该是幅值相等，相位相差120。的对称状态。电能质量一般用频率、电压、波形和三相电压、电流的不平衡度来衡量。电力系统中各种发、输、配电设备和用电设备一般都是按额定工业频率和各种电压等级的额定电压来设计的，在这种电能质量的条件下.电气设备的运行性能是最佳的，效率是最高的。任何频率和电压对额定值的偏差都将影响这些设备的运行性能和效率.以及由这些设备所生产的产品质量和数量，同时也会缩短各种设备的寿命。所以，各国和各电力系统为r保证电气设备的正常运行.都规定了相应的频率和电压质量标准(见电力系统频率和电压质量)。理想的电压波形是正弦形的.但是由于各种1卜线性负荷的接人.使电压和电流波形发生畸变.出现各次谐波。在三相交流电力系统中.大容量单相负荷的出现，单相负荷在三相系统中分布的不均匀性.单相负荷投人和断开的随机性，以及电力系统各相元件阻抗的不等，都会使对称的三相系统中出现负序和零序的电压和电流分量。电力系统中的谐波和负序、零序分量都将影响各种电力设备和通信线路的正常运行性能，所以各国及各电力系统也都拟订了管理电力系统谐波的规定和电力系统不平衡度的标准(见波形质1及电压和电流不平衡度)。此外，电压波动和闪变、电压跌落(见电压质1)等也都是表征电能质量的指标。
