的稳定性、可靠性和安全性；减少晶闸管的数量、简化阀结构，有利于提高抗震能力；降低阀的损耗，而且提供更
de wen ding xing ke kao xing he an quan xing jian shao jing zha guan de shu liang jian hua fa jie gou you li yu ti gao kang zhen neng li jiang di fa de sun hao er qie ti gong geng
的优化设计；具有更大的过负荷能力，具有适当的安全裕度，有利于提高直流系统的动态性能和多条直流并联运行
de you hua she ji ju you geng da de guo fu he neng li ju you shi dang de an quan yu du you li yu ti gao zhi liu xi tong de dong tai xing neng he duo tiao zhi liu bing lian yun hang
0万千瓦等级的直流输电的技术经济性能影响重大。6英寸晶闸管可以提供更高的短路电流能力，有利于直流系统
0 wan qian wa deng ji de zhi liu shu dian de ji shu jing ji xing neng ying xiang zhong da 6 ying cun jing zha guan ke yi ti gong geng gao de duan lu dian liu neng li you li yu zhi liu xi tong
样才能保证元件的高质量。问：为什么要开发6英寸晶闸管？答：研究和开发6英寸晶闸管对±800千伏、60
yang cai neng bao zheng yuan jian de gao zhi liang wen wei shen me yao kai fa 6 ying cun jing zha guan da yan jiu he kai fa 6 ying cun jing zha guan dui 800 qian fu 60
工艺稳定，工艺设备的自动化程度要求非常高，从而大大避免人为作失误。同时，测试和试验条件也非常严格，这
gong yi wen ding gong yi she bei de zi dong hua cheng du yao qiu fei chang gao cong er da da bi mian ren wei zuo shi wu tong shi ce shi he shi yan tiao jian ye fei chang yan ge zhe
此，直流输电换流阀用晶闸管的制造工艺必须保证直流输电用晶闸管的苛刻参数，要求一致性好、可靠性高，制造
ci zhi liu shu dian huan liu fa yong jing zha guan de zhi zao gong yi bi xu bao zheng zhi liu shu dian yong jing zha guan de ke ke can shu yao qiu yi zhi xing hao ke kao xing gao zhi zao
对每个器件参数的一致性要求很高；第二，换流阀一般处于长期运行状态，对每个器件的长期可靠性要求很高。为
dui mei ge qi jian can shu de yi zhi xing yao qiu hen gao di er huan liu fa yi ban chu yu chang qi yun hang zhuang tai dui mei ge qi jian de chang qi ke kao xing yao qiu hen gao wei
闸管的要求不同，有两个最显著的技术qq三国最新逃犯坐标特点：第一，要求一个换流阀臂上的器件几乎要同时开通和同时关断，因此
zha guan de yao qiu bu tong you liang ge zui xian zhu de ji shu qq san guo zui xin tao fan zuo biao te dian di yi yao qiu yi ge huan liu fa bi shang de qi jian ji hu yao tong shi kai tong he tong shi guan duan yin ci
流输电晶闸管与其他工业用晶闸管有何区别？答：直流输电换流阀是由多个晶闸管串联而成的。它与一般工业用晶
liu shu dian jing zha guan yu qi ta gong ye yong jing zha guan you he qu bie da zhi liu shu dian huan liu fa shi you duo ge jing zha guan chuan lian er cheng de ta yu yi ban gong ye yong jing
管。世界上采用过6英寸晶闸管的只有日本。2qq三国最新逃犯坐标000年投运的kii水道直流工程采用了6英寸晶闸管。问：直
guan shi jie shang cai yong guo 6 ying cun jing zha guan de zhi you ri ben 2qq san guo zui xin tao fan zuo biao 000 nian tou yun de kii shui dao zhi liu gong cheng cai yong le 6 ying cun jing zha guan wen zhi
成的天广工程采用4英寸晶闸管。21世纪初建成投产的首条300万千瓦三常直流输电工程开始采用5英寸晶闸
cheng de tian guang gong cheng cai yong 4 ying cun jing zha guan 21 shi ji chu jian cheng tou chan de shou tiao 300 wan qian wa san chang zhi liu shu dian gong cheng kai shi cai yong 5 ying cun jing zha
泗高压直流输电工程采用2英寸的晶闸管，80年代末建成的葛南超高压直流工程采用3英寸晶闸管，90年代建
si gao ya zhi liu shu dian gong cheng cai yong 2 ying cun de jing zha guan 80 nian dai mo jian cheng de ge nan chao gao ya zhi liu gong cheng cai yong 3 ying cun jing zha guan 90 nian dai jian
子技术的进步，直流输电用晶闸管从最初的2英寸qq三国最新逃犯坐标发展到现在的6英寸。上世纪80年代我国自行建设的舟山和嵊
zi ji shu de jin bu zhi liu shu dian yong jing zha guan cong zui chu de 2 ying cun qq san guo zui xin tao fan zuo biao fa zhan dao xian zai de 6 ying cun shang shi ji 80 nian dai wo guo zi hang jian she de zhou shan he sheng
都带来了输送容量提高、损耗降低、阀结构简化、可靠性提高的优越性。因此随着直流输电容量不断增大和电力电
dou dai lai le shu song rong liang ti gao sun hao jiang di fa jie gou jian hua ke kao xing ti gao de you yue xing yin ci sui zhe zhi liu shu dian rong liang bu duan zeng da he dian li dian
闸管经历了哪些发展过程？答：自qq三国最新逃犯坐标从在1967年用2英寸晶闸管阀代替汞弧阀之后，每一次晶闸管面积的扩大，
zha guan jing li le na xie fa zhan guo cheng da zi qq san guo zui xin tao fan zuo biao cong zai 1967 nian yong 2 ying cun jing zha guan fa dai ti gong hu fa zhi hou mei yi ci jing zha guan mian ji de kuo da
并在阴极－阳极间通过很大的电流。因此晶闸管的作用就是赋予换流阀实现交直流转换的功能。问：直流输电用晶
bing zai yin ji yang ji jian tong guo hen da de dian liu yin ci jing zha guan de zuo yong jiu shi fu yu huan liu fa shi xian jiao zhi liu zhuan huan de gong neng wen zhi liu shu dian yong jing
开通之前具有正向阻断电流的能力。同时，给晶闸管控qq三国最新逃犯坐标制极通以很小的电流，就能使它在较低的正向电压下开通，
kai tong zhi qian ju you zheng xiang zu duan dian liu de neng li tong shi gei jing zha guan kong qq san guo zui xin tao fan zuo biao zhi ji tong yi hen xiao de dian liu jiu neng shi ta zai jiao di de zheng xiang dian ya xia kai tong
力和运行电压。因此单只晶闸管的容量直接影响换流阀的性能。晶闸管不仅具有反向阻断电流能力，并且在受触发
li he yun hang dian ya yin ci dan zhi jing zha guan de rong liang zhi jie ying xiang huan liu fa de xing neng jing zha guan bu jin ju you fan xiang zu duan dian liu neng li bing qie zai shou chu fa
件。一个换流阀由数十或数百只晶闸管构成。由于换流阀是直流输电工qq三国最新逃犯坐标程的心脏，直接决定直流工程的最大通流能
jian yi ge huan liu fa you shu shi huo shu bai zhi jing zha guan gou cheng you yu huan liu fa shi zhi liu shu dian gong qq san guo zui xin tao fan zuo biao cheng de xin zang zhi jie jue ding zhi liu gong cheng de zui da tong liu neng
晶闸管的发展现状和6英寸晶闸管的开发问：晶闸管在直流输电中起什么作用？答：晶闸管是构成换流阀的基本元
jing zha guan de fa zhan xian zhuang he 6 ying cun jing zha guan de kai fa wen jing zha guan zai zhi liu shu dian zhong qi shen me zuo yong da jing zha guan shi gou cheng huan liu fa de ji ben yuan