【正文】 s beginning our country.Protecting after the electricity future trend in technique is to turns to calculator, the network turn, the intelligence turn, protect, control, measuring to correspond by letter with the data the integral whole turn the development. The electric power system increases continuously to the protective request in tiny machine, in addition to protective and basic function, should still have the big capacity break down the information to deposit the space with data over a long period of time, the fast data handles function, mighty correspondence ability, protect, control with other to equip with adjust an ability for the net to share whole system data, information with network resources, high class language plait distance etc..This will beg the tiny machine protection equips the function that have an equal to set PC the development in the calculator early, onced conceived to use a the small scaled calculator in set makes after electricity protection the at that time small scaled machine physical volume is big, the cost is high, the dependable is bad, it is not realistic that this , the together tiny machine protection equiped the function, speed, saving capacity that the work of the size likeness control machine to exceed the small scaled machine of that year consumedly, therefore, use a work controls the machine makes after electricity the protective opportune moment is already mature, this will be an one of the protective development in tiny machine directions. Turn after the tiny machine that protection equip of electricity, it is the development trend that can39。s integrated circuit and apply to still be placed in the predominant position, this is the integrated circuit protection in this respect Nanking electric power automates the integrated circuit work variety that institute for research research to manufacture measures high in direction the protection has the important function, the University of Tienjin automates with Nanking electric power the integrated circuit that equipments factory cooperate researches to manufacture mutually the electric voltage pensates the high in direction in type protection also circulates in several 220 kVses with a circuit. The our country have started the calculator namely from the end of 7039。s inside, according to gather carry the integrated circuit that calculate the enlarger the protection have started bee the plete series to the 8039。s to is a transistor to protect the booming development after the electricity in 8039。s the our country have set up after electricity protection research, design, make and circulate with the plete system of the is the ages that machine electricity type prospers after the electricity protection, after the electricity for the our country From the end of 5039。 參考文獻[1] 馮金光 ， 第三版，221238[2] 孫國凱 霍利民 柴玉華. 電力系統(tǒng)繼電保護原理. 中國水利水電出版社，1985， [3] 戈東方 ，1989年12月，第一版[4] 丁毓山. ，2000年，第一版，85109[5] 何仰贊. ，1984年，第一版，65135[6] 國家電網(wǎng)公司戰(zhàn)略規(guī)劃部 . ELECTRICITY . 2003年1月第1期，[7] . 中國水利水電出版社，[8] 雄信銀 ，2004年8月， 第三版，107114 附 錄 The electric power system protects the technical present condition after the electricity and developmentThe electric power system flies to develop soon to protect to put forward the new request continuously after the electricity, the electronics technique, calculator technique fly to develop soon with correspondence technically again for protecting the technical development to infuse into the new vitality constantly after the electricity, therefore, protect the technique with abundant resources after the electricity, pleted the stage in 4 histories of the development in 40 times of remaining years of lifes. After founding a nation, the our country protects the course after the electricity, after electricity protection design, after electric appliances manufacture industry with protect the technique troops after the electricity from have no to have, walked through the road that a century of advanced countries half walk through in about 10 39。 在本次設(shè)計當中，我遇到了很多的困難，但在輔導(dǎo)老師的幫助和我自己的努力下，我還是克服了這些困難，最終把這次設(shè)計的任務(wù)完成了。設(shè)計內(nèi)容歷時一個學(xué)期，編寫了畢業(yè)設(shè)計說明書(包括目錄、摘要、前言、計算說明、設(shè)計內(nèi)容、結(jié)論、外文翻譯、參考文獻)與畢業(yè)設(shè)計計算書(包括參數(shù)計算、短路計算、設(shè)備選擇及校驗)，繪制主接線圖2張、繼電保護配置圖1張、220KV開關(guān)站平面布置圖1張，220KV開關(guān)站平面布置手工圖一張，共5張圖。 SQ Qe 熱穩(wěn)定滿足要求： 型號：LCLWD220額定電壓：220KV額定電流比：2x300/5動穩(wěn)定電流（倍數(shù)）：381S熱穩(wěn)定電流（倍數(shù)）：21： 型號：YDR220額定電壓：//100最大容量：1200VA二次負荷： 1501 220 3 440： 由系統(tǒng)穿越功率可知：Ig=選2根LGJ鋁絞線——630載流量：Iyu== IgQ=QZ+Qt=（I2+10I+I）t/12+2 =(++)+= KA2 S Q Qe 熱穩(wěn)定滿足要求2. 隔離開關(guān)： 型號： GW422/2000額定電壓：220KV額定電流：2000A動穩(wěn)定電流（峰值）：100KA熱穩(wěn)定電流：40KA 動穩(wěn)定電流：ich==29KA ich idf =100KA 動穩(wěn)定滿足要求熱效應(yīng)：Q= S 熱穩(wěn)定要求最小截面：Szx=mm2 主變出線，母聯(lián)工作電流：Ig= 按經(jīng)濟電流密度選擇 T=5800h , 查設(shè)計手冊可得：J= Sj=Ig/J=347/=377 選2根LGJ鋁絞線——500 載流量為：Iyu==1659A Ig 熱穩(wěn)定要求最小截面 Szx= 滿足要求 220KV側(cè)設(shè)備選擇：1. 短路器： 型號：LW1220/2000額定電壓：220KV 額定電流：2000A額定開斷電流：40KA動穩(wěn)定電流（峰值）：100KA熱穩(wěn)定電流：40KA（4S）1. 2號主變進線工作電流：Ig=三號變壓器進線工作電流：Ig=母聯(lián)工作電流：Ig=出線回路工作電流：Ig=動穩(wěn)定電流：ich==29KA idf=100KAich idf 動穩(wěn)定滿足要求熱效應(yīng)：Q=Qz+Qt=（I2+10I22+I24）t/12+2 =（++）x4+ = KA2 S Qe==3969 KA2 S Qe=212x5=2205 KA2 S熱穩(wěn)定滿足要求3. 電流互感器：型號：LAJ10 額定電壓：10KV額定電流比：20006000/5動穩(wěn)定電流（倍數(shù)）：901S熱穩(wěn)定電流（倍數(shù)）：504. 電壓互感器： 型號：JSJB10額定電壓：10 最大容量：960VA二次負荷： 1201 200 3 4805. 電抗器：型號：XKK1040006 額定電壓：10KV額定電流：4000A動穩(wěn)定電流（峰值）：204KA熱穩(wěn)定電流：80KA（4S）6. 母線： 由母線穿越功率可知： Ig==4358A 選2根槽形導(dǎo)體 ——6870 載流量為 Igu==12231AIg 熱效應(yīng)： Q=QZ+Qt=（I2+10I+I）t/12+2=(++)+ =2135KA2S Q Qe 短路器參數(shù)滿足要求2. 隔離開關(guān)： 型號：GN2320/8000額定電壓：20KV額定電流：8000A動穩(wěn)定電流（峰值）：300KA熱穩(wěn)定電流：120KA（4S）各段工作電流：IgIe動穩(wěn)定電流：ich= idf=300KA 動穩(wěn)定滿足要求熱效應(yīng)： Q=16395K