【正文】 （310）式中：為可靠系數(shù)，； 為變壓器額定電流。代入數(shù)據(jù)得 ：= =比較上述（1），（2），（3）式的動(dòng)作電流，取最大值為計(jì)算值，即： =（A）靈敏系數(shù)按下式校驗(yàn) K= （312）式中，為各種運(yùn)行方式下變壓器內(nèi)部故障時(shí)，流經(jīng)差動(dòng)繼電器的最小差動(dòng)電流，既采用單側(cè)電源供電時(shí)，系統(tǒng)最小運(yùn)行方式下，變壓器發(fā)生短路是最小短路電流。當(dāng)不能滿足時(shí)，則需采用具有制動(dòng)特性的差動(dòng)繼電器。 電流互感器選擇及差動(dòng)繼電器選型本設(shè)計(jì)采用較經(jīng)濟(jì)的BCH2型帶有速飽和變流器的差動(dòng)繼電器，以提高保護(hù)裝置的勵(lì)磁涌流的能力。當(dāng)過電流的持續(xù)時(shí)間長(zhǎng)于時(shí)間繼電器設(shè)定的延時(shí)以后，延時(shí)閉合觸點(diǎn)接通，向外輸出超負(fù)荷信號(hào)。.9 過負(fù)荷保護(hù)原理TA是電流互感器，KA是電流繼電器，當(dāng)線路的電流大于額定值時(shí)，TA輸出到KA的電流驅(qū)動(dòng)電流繼電器動(dòng)作，電流繼電器觸點(diǎn)接通，時(shí)間繼電器KT得電吸合。相關(guān)的執(zhí)行機(jī)構(gòu)就會(huì)作出規(guī)定的動(dòng)作。動(dòng)作帶延時(shí)作用于信號(hào)。 各種繼電器選型電流繼電器的選擇：DL11/10電流互感器的選擇：LQJ10/160信號(hào)繼電器的選擇：DX17時(shí)間繼電器的選擇：DS34第四章 電力變壓器保護(hù)及主接線圖 所有保護(hù)接線配置圖 . 變電所主接線圖（主接線圖）器件名稱型號(hào) 數(shù)量
瓦斯繼電器(KG) FJ380 1
電流互感器(TA)LQJ10/1604電流繼電器(KA)DL11/203電流繼電器(KA)DL11/101時(shí)間繼電器(KT1)DS111C/Q1時(shí)間繼電器(KT2)DS34 1信號(hào)繼電器(KS)DX175差動(dòng)電流繼電器（KD）DL11/2001中間繼電器(KM)DZ15 2致謝詞時(shí)光荏苒，光陰如梭，大學(xué)生活即將結(jié)束，本次畢業(yè)設(shè)計(jì)也接近尾聲，此刻感觸良多。在設(shè)計(jì)中必須做到明確設(shè)計(jì)目的和題目要求；細(xì)心，做到嚴(yán)謹(jǐn)、精確,反復(fù)修改,精益求精；使所學(xué)的理論知識(shí)更加透徹，從而加深對(duì)其的理解；在設(shè)計(jì)中緊扣繼電保護(hù)的四要求：速動(dòng)性、靈敏性、可靠性、安全性。 這次設(shè)計(jì)不僅是我的理論知識(shí)得到了鞏固和加強(qiáng)，同時(shí)，也提高了我的綜合思維能力，使我明白了學(xué)以致用的重要性。張老師的專業(yè)水平，治學(xué)嚴(yán)謹(jǐn)和科學(xué)研究的精神也值得我永遠(yuǎn)學(xué)習(xí)和敬佩，并將積極影響我今后的學(xué)習(xí)和工作。感謝三年中陪伴在我身邊的同學(xué)、朋友，感謝他們?yōu)槲姨岢龅挠幸娴慕ㄗh和意見，是他們的支持、鼓勵(lì)和幫助，讓我充實(shí)的度過了三年的學(xué)習(xí)生活。 參考文獻(xiàn) [1] .《電力系統(tǒng)繼電保護(hù)》[M].北京：中國(guó)林業(yè)出版社，2008[2] 毛錦慶.《電力系統(tǒng)繼電保護(hù)實(shí)用技術(shù)問答》第二版 [M].北京：中國(guó)電力出版社, 1999[3] 陳少華.《電力系統(tǒng)繼電保護(hù)》[M].北京：機(jī)械工業(yè)出版社，2009[4] 牟道槐.《電力系統(tǒng)工程基礎(chǔ)》第三版 [M].北京：機(jī)械工業(yè)出版社，2002 [5] 劉介才《工廠供電》第四版[M].北京：機(jī)械工業(yè)出版社，2004[6] 陳生貴.《電力系統(tǒng)繼電保護(hù)》[M]重慶：重慶大學(xué)出版社，2003[7] 合編.《電力系統(tǒng)繼電保護(hù)及其自動(dòng)化產(chǎn)品選型手冊(cè)》[M] .北京：中國(guó)電力出版社，2003 [8] 丁毓山.《中小型變電所實(shí)用設(shè)計(jì)手冊(cè)》[M] .北京：水利電力出版社，2000[9] 劉介才.《工廠供電設(shè)計(jì)指導(dǎo)》[M] .北京：機(jī)械工業(yè)出版社，2006[10] 丁書文、黃訓(xùn)誠(chéng)《變電所綜合自動(dòng)化原理及應(yīng)用》[M] .北京：中國(guó)電力出版社，2003Making an employment tribunal claimEmployment tribunals sort out disagreements between employers and employees.You may need to make a claim to an employment tribunal if:t agree with the disciplinary action your employer has taken against youDismissal.You can make a claim to an employment tribunal, even if you haven39。appealedFurther help.Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation.Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the organisations listed underdamagesbased agreement. In England and Wales, your solicitor can39。if you win the case.If you are thinking about signing up for re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. nearest CAB.For more information about making a claim to an employment tribunal, sees antiracism taskforce, is in London for the Football Association39。s Premier League match at Chelsea on Sunday.I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport.For me it39。opened disciplinary proceedings against CSKACity39。s governing body, has also ordered an immediate investigation into the referee39。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA.Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。或許是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個(gè)不同的日子過成了同一天的樣子；或許是追溯過去，對(duì)自己那些近乎偏執(zhí)的怪異信念的醒悟，這些天以來(lái)，思緒一直很凌亂，在腦海中不斷糾纏。二十年的人生軌跡深深淺淺，突然就感覺到有些事情，非做不可了。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。 Then in high school, think don39。t remember his appearance.　　童年時(shí)，覺得壓歲錢和新衣服是過年必備，但是隨著年齡的推進(jìn)，會(huì)越來(lái)越發(fā)現(xiàn)，那些東西根本就可有可無(wú)；初中時(shí)，以為要有一場(chǎng)暗戀才意味著真正的成長(zhǎng)，但三年過去后，自己心平氣和的寫同學(xué)錄的時(shí)候，突然就發(fā)現(xiàn)是不是真正的成長(zhǎng)了，好像并沒有那么重要了；然后到了高中，覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個(gè)句點(diǎn)，但畢業(yè)晚會(huì)的時(shí)候最終還是被梗塞在了咽喉，后來(lái)再次站在他曾經(jīng)揮汗如雨的球場(chǎng)，看著他投過籃球的球框時(shí)，突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。A person39。想要的，不想要的，界限明確，好像沒有什么可以撼動(dòng)自己。嫌惡過自己的怯懦，最終卻發(fā)現(xiàn)有很多緣分，有很多錯(cuò)過，好像冥冥之中真的已經(jīng)注定。At the moment, the sky is dark, the air is fresh factor after just rained. Suddenly thought of blue plaid shirt。 From the corner at the beginning of deep friendship。t start planning... Those years, those days of do, finally, like youth, will end in our life.　　此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence.The supersonic descent could happen as early as Sunda.The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。s not needed. Instead, he plans to deploy his 270squarefoot (25squaremeter) main chute at an altitude of around 5,000 feet (1,524 meters).In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds.Even if everything goes as planned, it w