電力網周率表 的英文怎麼說
中文拼音 [diànlìwǎngzhōulǜbiǎo]
電力網周率表
英文
frequency meter of network- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 力 : Ⅰ名1 (力量; 能力) power; strength; ability; capacity 2 [物理學] (改變物體運動狀態的作用) forc...
- 網 : Ⅰ名詞1 (捕魚捉鳥的器具) net 2 (像網的東西) thing which looks like a net 3 (像網一樣的組織或...
- 周 : Ⅰ名詞1 (圈子; 周圍) circumference; periphery; circuit 2 (星期) week 3 [電學] (周波的簡稱) c...
- 率 : 率名詞(比值) rate; ratio; proportion
- 表 : Ⅰ名詞1 (外面;外表) outside; surface; external 2 (中表親戚) the relationship between the child...
- 電力網 : [電工] (供電系統) mains; power network
- 電力 : [電學] power; electric power電力變阻器 power rheostat; 電力捕魚 electrofishing; 電力潮流 directio...
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What the subject researching is that power energy should be measured with base wave ammeter to power systematic nonlinear user ; and that it is high veracious by base wave ac parameters measurement method to those not bad contaminative. it is well known that all kinds of ac parameters including of base wave and harmonics, but the content of harmonics in power systems increase largely with the mass disturbance to power using high - power electric equipment. which makes wave shape of voltage and current aberrence, so the measurement veracity and reliability decreased largely. at the same time brings out serious infuency to safe run of power system and electric equipment. the power which any non - linear loads consumes can be divided into two sides, one is base power absorbed in power and the other is minus harmonics power
本課題所研究的問題是針對電力系統非線性負載用戶採用基波電度表來計量電能;而對諧波污染不嚴重的線性用戶採用基波交流參數測量的方法仍然具有較高的準確性。眾所周知,各種交流參量都包含基波和各次諧波,然而隨著電力電子技術的迅速發展,大功率的用電設備對電網的干擾也是越來越嚴重,導致電力系統諧波含量迅速增長,使電壓和電流的波形產生嚴重畸變,測量的準確性和可靠性都大大降低,同時也對電力系統和用電設備的安全運行帶來嚴重的影響。任何一種非線性負載所消耗的功率都可以分為兩部分,一部分為從電網中吸取的基波功率,另一部分則是負的諧波功率。
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