電壓跳閘 的英文怎麼說
中文拼音 [diànyātiàozhá]
電壓跳閘
英文
shunt tripping-
Delay trip multiple curves can choose the " inertia delay ", or to prevent electrical transformer loading terminal unnecessary trip
多種延時跳閘曲線可選購的"慣性延時" ，可防止電動機或變壓器負載端出現不必要的跳閘Under - voltage tripping relay
低電壓跳閘繼電器Unified power flow controller ( upfc ) is one of the most powerful and most promising controllers of facts. if we use upfc to control the transmission parameters, terminal voltage, line impedance and phase angle in normal situation and use it to compensate zero sequence and negative sequence currents when one of transmission lines is cut off, we can implement two phases operating in high voltage transmission lines, which can improve stability and reliability for the transmission system
統一潮流控制器（ upfc ）是功能最強、最具發展潛力的靈活交流輸電系統（ facts ）控制器之一，如果在常規條件下，用upfc實現輸電線路的電壓調節、移相、潮流控制、阻尼振蕩等功能，在發生單相永久性接地或單相斷路故障時，由傳統的三相跳閘改為單相跳閘，用upfc的並補來濾除兩端系統的零序和負序電流，用upfc的串補來提高輸電線的傳輸功率，以實現兩相長期運行，那麼輸電系統的穩定性、可靠性將大大提高。Measuring of lightning parameters is the base work of lightning research. it is very important for researching the lightning characteristics, analyzing the accident of lightning, identifying the responsibility of lightning strike outage accident and discussing the strategies of lightning protection. it also can provide precise original data of atmosphere over - voltage for designing insulation co - ordination
雷電流參數的測量是進行雷電研究的基礎工作，對于研究雷電特性、分析雷害事故、鑒定雷擊跳閘事故責任、探討防雷對策及為絕緣配合設計提供精確的大氣過電壓原始數據均具有十分重要的意義。According to recording data of higher level monitor and control system when main motor drive system for four - high medium plate mill is operated, and relation between armature voltage of dc electromotor and ac input voltage of inverter, trip cause of dc fast automatic switch was analyzed in detail, and specific countermeasure and measures are given
根據中板四輥軋機主電機傳動系統運行時的上級監控系統記錄數據，以及直流電機電樞電壓與變流器交流側輸人電壓的關系，詳盡地分析了直流快速自動開關跳閘故障原因，並提出具體的對策及措施。The capacitor has advantages of low dissipation, high insulation resistance, good self - healing character, and steady electricity performance, anti - striking current, strong over - carrying capacity, etc. it is assembled sith inner hidden discharge resistance. it is applied in high or low pressure sodium lamp and mercury - arc lamp for the help of power factor compensation
斷開電流允許時間：在0 . 5秒內的8個半周波前跳閘絕緣電壓ul1699第59節：線路與負載之間1000v ， 1分鐘The mishaps ? a short - circuit at the brunsb ttel plant and a transformer fire at the kr mmel station ? posed little threat
兩起問題不大的事故? ?布隆斯比特核電廠送出線路短路跳閘和科魯默爾核電廠變壓器故障起火，對公眾生活和自然環境本來構不成任何威脅。By analyzing an accident during operating the low - voltage drawer - type switch and resulting in the trip of the incoming power feeder of the bus, the correspondent retrofit for the low - voltage drawer - type switch was made, to proride reference for how to select it
摘要通過一起在操作低壓抽出式開關過程中導致母線進線電源開關跳閘的事故原因分析，對低壓抽出式開關實施了相應的改造，為低壓抽出式開關選型提供參考。On - line monitoring of hvcb is the precondition of predicting maintenance, is the key element of reliable run, and is the important supplement to the traditional off - line preventive maintenance in fact, the faults are made by hvcb, no matter in number or in times, is over 60 % of total faults so it has determinative importance for improving the reliability of power supply and this can greatly decrease the capital waste used by - dating overhaul in this paper, the inspecting way of hvcb mechanism characteristic is discussed the concept of sub - circuit protector is presented, the scheme that we offered has been combined with sub - circuit integrality monitoring theory, to ensure that it has the two functions as a whole according the shut - off times at rated short circuit given by hvcb manufacturer, the electricity longevity loss can be calculated in each operation, and the remained longevity can be forecast too an indirect way for calculating main touch ' s temperature by using breaker shell temperature, air circumference temperature and breaker ' s heat resistance is improved in this paper, and main touch resistance can be calculated if providing the load current msp430, a new single chip microcomputer made by ti company, is engaged to develop the hardware system of the on - line monitoring device, and special problem brought by the lower supply voltage range of this chip is considered fully
高壓斷路器所造成的事故無論是在次數，還是在事故所造成的停電時間上都占據總量60以上。因此，及時了解斷路器的工作狀態對提高供電可靠性有決定性意義；並可以大大減少盲目定期檢修帶來的資金浪費。本文論述了斷路器機械特性參數監測方法；提出了二次迴路保護器的概念，並將跳、合閘線圈完整性監視和二次迴路保護結合起來，給出具有完整性監視功能的二次迴路保護器實現方案；根據斷路器生產廠家提供的斷路器額定短路電流分斷次數，計算每次分閘對應的觸頭電壽命損耗，預測觸頭電壽命；提出根據斷路器殼體溫度和斷路器周圍空氣溫度結合斷路器熱阻來計算斷路器主觸頭穩態溫升的方法，並根據此時的負荷電流間接計算主觸頭迴路的電阻；在硬體電路設計上，採用美國ti公司最新推出的一種功能強大的單片機msp430 ，並充分考慮該晶元的適用電壓范圍給設計帶來的特殊問題；在通信模塊的設計中，解決了不同工作電壓晶元之間的介面問題，並給出了直接聯接的接線方案。Obtained by emtp program and the egm, this paper studies on lightning protection performance on 500kv double circuit transmission line the distributed parameter model of tower is built when analyzing the back stroking lightning protection performance for double circuit line, it can truly reflect the spreading course of lightning current on the tower, furthermore, considering the randomness of working voltage ' s phase when lightning strokes the top tower and supposing the probability of lightning appearing arbitrary phase in a cycle of ac is equal, this paper brings forward the statistical method to calculate the rate of back stroking on double circuit line
本文利用emtp程序、擊距法對500kv同桿雙回線路的耐雷性能進行了研究。在分析同桿雙回線路的反擊耐雷性能時，建立了桿塔的分佈參數計算模型，此模型可以真實地反映雷電流在桿塔上的傳播過程。並針對雷擊塔頂時，導線運行電壓相位角的隨機性，本文假定雷擊出現于交流一周期的任一角度區間內的概率相等，提出了利用統計法計算同桿雙回線路的反擊跳閘率。With the demonstration of 35kv line of youxian substation, it built a numeral value calculation model of on - line data of each pole. in terms of many factors, it studied on how to improve lightning withstand level, especially on how to use moa economically and reasonably, and on the synthetic measures to decrease the lightning tripping outrage
在考慮眾多影響因素的基礎上，對雷擊35kv線路時雷電過電壓進行數值計算，通過大量的數值模擬計算，研究如何提高其耐雷水平，特別是研究線路型避雷器經濟合理的使用，以及降低雷擊跳閘率的綜合處理方法。The reclosers are designed for three phase automatic or manual trip operation providing overcurrent protection for systems rated up to 38kv maximum, 800a continuous, and 12. 5ka rms symmetrical interrupting
重合器的設計是三相自動或者手動跳閘，可以提供額定電壓達38kv ， 800a持續電流， 16ka對稱故障電流系統過流保護。Under voltage trip
低電壓自動跳閘分享友人