1) main transformer protection
主变保护
1.
This paper discusses some problems about CFZ4-5QSTH main transformer protection made by Siemens Transformer co.
根据现场运行经验分析西门子变压器有限公司生产的CFZ4-5QSTH型主变保护存在的若干问题:如冷却器全停跳闸回路、操作箱反事故措施、变压器断路器失灵时电压灵敏度问题、非电量保护跳闸等,探讨这些问题的改进措施。
2) transformer protection
主变保护
1.
Analysis on transformer protection potential fault trip resulting from CT s wrong connection;
CT一次引线误压接引起主变保护潜在误动分析
2.
Implementation of bypass breaker replacing transformer breaker in 220 kV double transformer protection configuration;
220kV双重化主变保护旁路断路器代主变断路器运行方案
3.
aiming at a breaker failure of CST231B transformer protection leading by 35kV transmission line,discovering that CST231B transformer protection has principle bu
针对一次35kV线路转换性故障导致主变高压侧误动的原因分析,发现CST231B主变保护存在原理缺陷。
3) main transformer backup protection
主变后备保护
1.
This paper expounds the requirements of some relevant regulations to main transformer backup protection,the real situations and features of our company’s facilities and the possible consequences.
通过阐述相关规程对主变后备保护配置要求和某公司主变后备保护的实际配置情况以及现有后备保护装置的特点,分析了会给黄化电网带来的严重危害,并提出相应的整改措施。
4) main transformer differential protection
主变差动保护
1.
Through the analysis on the malfunction of main transformer differential protection happened at one 500 kV substation,the influence of earth potential difference on differential protection in substation is discussed and the corresponding strategies and suggestions are proposed.
通过对发生在500 kV某变电站主变差动保护一次误动作情况的分析,探讨变电站地电位差对差动保护的影响,并对此次事故应吸取的教训和同类事故预防提出了对策和建议。
5) computer assistant transfonner protecting device
微机主变保护
补充资料：主动脉瓣退行性变
主动脉瓣退行性变
retrograde affection of aortic valve
主动脉瓣叶呈黏液样改变，组织菲薄和半透明状，不能耐受主动脉内舒张期压力而产生关闭不全。常见于梅毒性主动脉炎、马方综合征、主动脉中层坏死、老年性退行性改变和其他原因引起的升主动脉瘤中。临床表现同主动脉瓣关闭不全。应行主动脉瓣替换术。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条