直流電損害 的英文怎麼說
中文拼音 [zhíliúdiànsǔnhài]
直流電損害
英文
electricity injury- 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
- 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
- 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...
- 損 : Ⅰ動詞1 （減少） decrease; lose 2 （損害） harm; damage 3 [方言] （用尖刻的話挖苦人） speak sarcas...
- 直流 : direct current （dc）; constant current; steady current; continuous current; zero frequency curre...
- 損害 : harm; damage; injure; damnify; [生物學] lesion; blight
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Some important parts for these two vsc - hvdc control systems are designed in detail, especially the structures and parameters of the vsc controllers, as well as the principles for selecting the equivalent inductance of the convertor transformer and the capacitance of the capacitor on the dc side of the vsc. digital simulation using netomac is done to verify the validity of those proposed control strategies. ( 2 ) the operation performance of the vsc - hvdc under some characteristic faulted conditions without any protection measures are studied, and the over - current and over - voltage of the vsc - hvdc during those faults is revealed
（ 2 ）對vsc - hvdc在沒有保護控制的情況下其交流側、直流側和vsc內部等部位發生常見較嚴重故障時的運行特性進行了模擬研究，總結出這些較嚴重故障可能對vsc - hvdc造成的危害，並針對這些危害提出了幾種切實有效的保護策略，模擬結果證實了應用這些保護策略可確保vsc - hvdc中的一些重要部件能夠在大多數類型的故障時免遭過電壓或過電流的損害。Fluid machinery in these areas is damaged due to cavitation and sand abrasion, which has threaten directly the safety operation of hydraulic and hydroelectric engineering, causing huge economic losses. the research, therefore, on the combined effect of cavitation and sand abrasion is of great significance. the researchers at home and abroad have done a lot of work on this issue
我國許多河流的含沙量較大，如著名的黃河幹流年均含沙量達37 . 9m ~ 3 / s ，黃河三門峽的年平均輸沙量達16億t ，這些地區使用的泵、水輪機等許多流體機械都在夾沙水流的作用下，受到了沙粒磨損與空化剝蝕的聯合破壞，這種破壞直接危害了水利水電工程的安全運行，造成了巨大的經濟損失，因而對含沙水流條件下空化剝蝕與泥沙磨損聯合作用進行研究有著很大的工程實際意義。
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