| 1. | A new method for the design of the fiber - optical digital interface in current differential protection 光纤纵差保护装置中光纤数字接口的设计新方法 |
| 2. | Data synchronization for current differential protection based on optical fiber channel for ehv amp; uhv long transmission line 特高压长线路光纤纵差保护数据同步 |
| 3. | Data synchronization for current differential protection based on optical fiber channel for ehv amp; amp; uhv long transmission line 特高压长线路光纤纵差保护数据同步 |
| 4. | Application of fiber current differential relays in electrical power system of shanxi wanjiazhai yellow river diversion project 光纤电流纵差保护在引黄工程供电系统中的应用 |
| 5. | The method is significant to the domestic study on current differential protection using optical fiber communication channel of subway line or short distance line 该方法对我国自行研制地铁线路或短线路光纤纵差保护有一定的参考意义。 |
| 6. | A common mistake and its harm in ct secondary connection of transformer differential protection were analyzed , the correct connection mode was explaned , and how to use the hexagon vector diagram of checking was introduced 摘要分析了一种常见的变压器纵差保护电流互感器错误接线及其危害,说明了正确接线方式,并介绍了如何通过作六角图来检查纵差保护二次接线的正误。 |
| 7. | The development , function and requirement of subway substation automation system were briefly introduced in this thesis . the principle and calculating method of current differential protection was analyzed in detail . and the synchronized data - sampling methods used in this protection were analyzed 本文简要介绍了地铁变电站自动化系统的发展概况及其功能要求,详细分析了电流纵差保护的原理和计算方法,并对比分析了光纤电流纵差保护的各种数据同步方法。 |
| 8. | The thesis is focus on the research of the optical - fiber differential current protection that can adapt to the rapidly changing power grid . it mainly contains the following four parts : ( 1 ) theoretical analysis of some operation criterions and some factors that influence the operation of the differential protection . ( 2 ) simulation of a 500kv transmission line using emtp software 其主要内容是: ( 1 )对影响差动保护灵敏度的各种因素和不同的电流差动保护判据进行了理论分析; ( 2 )用emtp仿真软件对差动判据进行了数据仿真,并用matlab对输出结果进行了详细的可视化分析; ( 3 )分析、比较了国内外纵差保护的数据采样同步方法; ( 4 )对判据进行了实际的编程实现和动模仿真。 |