電平損失 的英文怎麼說
中文拼音 [diànpíngsǔnshī]
電平損失
英文
level breakdown-
T - telecomm belongs to china telecomm group, its market share has greatly reduced since 1999, and its business growth ratio is also behind its main competitors. t - telecomm only gained 0. 9 % growth ratio in jan. 2002, compared with the same period of last year. t - telecomm also has large numbers of bad debts, because thousands of customers have n ' t paid their billing, and the total arrearage is between 3 % and 4 % of t - telecomm ' s revenue per year
T電信公司隸屬中國電信集團公司，從1999年開始， t電信的市場份額逐年萎縮，業務增長率也遠遠低於其主要競爭對手， 2002年1月份的業務收入和去年相比僅增長了0 . 9 ；與此同時企業內部卻有大量的用戶欠費、壞帳損失產生，年平均用戶欠費約占其業務收入的3 4 。But when fault was occurred, sometimes there would be great loss. for the reason, the paper put forward a microcomputer bus protection scheme suit for mv or lv power system with low current grounding based on the great researching about the working theory of current bus protections and the characteristic of mv or lv system with low current grounding. based on it, the paper has designed the platform of the hardware and the software programs
針對國內目前中、低壓電網大都未裝設母線保護裝置，發生故障不能及時切除時造成很大損失的狀況，本文在廣泛研究當前主流的母線保護動作原理並認真分析了中、低壓小電流接地系統特點的基礎上，提出了一套適合中、低壓微機母線保護裝置的研製方案，並據此選擇、搭建了硬體平臺，設計了軟體功能程序。Because the monitoring of electricity equipment is still in the condition of traditional prophylactic test ( monitoring off line ), wordage list and management method of handwork operation, to strengthen the real - time monitoring of the operation state of electricity equipment ( monitoring on line ), find out the anomaly of equipment, monitor and analysis the fault, then take a corresponding measures to lower the fault loss so that we can make the transition between the regulations of periodic repairing equipment and the regulations of reasonable state repair, is the work which the department of power supply and operation make much of
針對對現有電氣設備的監測大都還處于傳統的預防性試驗（離線監測） 、文字報表、手工操作的管理方式的現狀，加強對電力設備的運行狀態進行實時的監測（在線監測） ，及時發現設備的異常徵兆、對故障進行診斷分析，並採取相應措施，把故障損失降低到最低水平，進而將目前實行的設備定期檢修制過渡到更為合理的狀態檢修制，一直是供電和運行部門十分重視的工作。Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles
對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。In at power supply system some transformers with special connection mode, such as scott transformer, anti - scott transformer, balance transformer and so on, are usual used. the voltage ratio is one of important parameters of transformer
採用斯科特變壓器、平衡變壓器等特殊接線方式變壓器作為主變壓器，能有效抑制負序電流，減少有功損耗和電壓損失，提高牽引機車的過負載能力。At the same time, the method of disposal phase shift of ct by compensation is introduced. then the analysis and statistic of electrical power quality, the control scheme and compensating amount of capacitor for reactive power compensation are analyzed respectively. and in the paper, the control with a / y and the switch with ac contactor and solid state switch is valid measure not only for improving operate level economically and amending electrical power quality but also for avoiding of replacing switch frequently and decrease economic loss
然後對現有的演算法進行了詳細的分析、比較，篩選出既能滿足硬體要求又可降低投資、保證精度、簡化軟體的方案，確定了準同步采樣的方案，並通過對準同步采樣誤差的分析，提出了一種從45開始采樣，從而提高精度的采樣數據處理辦法，同時，對于電流互感器相位漂移提出了一種補償辦法，接著對裝置中電能質量分析與統計以及無功補償中電容器的補償量、投切原則也作了相應分析，其中對于無功補償採用y混合接線，並利用交流接觸器和固態開關共同投切電容，不但提高了經濟運行水平、改善了電能質量，而且有效的避免了頻繁更換開關，減少了經濟損失；最後，設計了裝置的硬體電路並繪制了相應的軟體流程圖。Increasing the voltage level of electrical transmission creates considerable advantages for the environment, including lower electricity losses and the use of less land compared to traditional overhead lines
跟傳統的高架線相比，增加電力傳輸的電壓水平可以為環境帶來很大的好處，包括更低的電力損失以及佔用更少的土地。On the other hand, because development of regional economic is n ' t balance, different users have different demands on power and different reliability. it is n ' t true that all users use one - class reliability. this paper points out priority pricing model based on different users
另外，我國地區經濟發展不平衡，並且電力資源短缺，資金匱乏，不同的用戶對電力的需求不同，缺電損失也不同，不應對所有用戶實行一個平均的、較高等級的可靠性，因此制定電價應考慮用戶對供電可靠性的要求，根據不同的可靠性等級，制定不同的分級電價。The power lost by current flowing through the winding, the power loss is equal to the square of the current multiplied by the resistance of the wire ( 1 2 r ). this power loss is transferred into heat
電流流以線圈所產生之能量損失，此能量損失等於電流大小的平方乘上線圈的電阻（ 12r ） ，這些能量損失轉換成熱能。Further more it is very difficult to balance the interest between the two parties, in particular when the relying party is suffered for the negligence of the ca. based on comparison with the professional liability to the third party, the article argues that the above relationship should be classified into “ trusted ” instead of “ contractual ”
但是，認證機構和證書信賴方之間的關系，認證機構在頒發和管理電子證書時因「過失」導致信賴方受損時，如何在信賴方的信賴利益和認證機構的職業利益之間尋求平衡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。At present, the backbone transport network in china mainly introduced the sdh transport techniques and atm switching techniques, then the network functions and traffics are highly integrated. and the damage of transport link and / or node failures will become much more serious than that of existing networks. in addition, because of the increasing social dependence on communication systems and the growing importance of information, it is very important to study network survivability strategies, which is also one of the important criterions to evaluate transport networks
這意味著通信網，尤其是大容量的高速通信網的失效（包括節點和線路的失效）將會給人們帶來巨大的經濟損失；另外，隨著人們生活水平的提高，人們對信息傳送的質量的要求也越來越高，這使得通信網的生存策略研究顯得很迫切；況且，中國已加入wto ，電信運營的競爭日趨激烈，為了在競爭中有一席之地，各電信運營商必需提供高質量、低成本的電信服務，這進一步促使通信網的生存策略研究提上日程。分享友人