| 1. | Line impedance stabilisation network hm6050 - 2
电源阻抗稳定网路 |
| 2. | Line impedance stabilisation network
电源阻抗稳定网路 |
| 3. | Results were also run for different high ( relative to the line impedance ) impedance values , including 900 ohms
此结果也在不同（相对于线路阻抗）的阻抗值上运行了，包括900欧姆。 |
| 4. | Furthermore , the phone line is continually cheaked by the unit so that changing line impedances due to weather or other factors are automatically compensated
另外，装置仍持续性地检查电话线路，以自动补偿由于天气或其他因素而造成线路阻抗的变化。 |
| 5. | A type of micro - ohmmeter based on the technique of current reversed 4 - line impedance measurement is designed , which can be testified to meet the requirement and have a good repeated accuracy
摘要设计一种基于四线制电流倒向技术的微弱电阻测量仪，经实验验证，该测量仪可以很好地满足测量要求，并具有良好的重复测量精度。 |
| 6. | Unified power flow controller ( upfc ) is one of the most powerful and most promising controllers of facts . if we use upfc to control the transmission parameters , terminal voltage , line impedance and phase angle in normal situation and use it to compensate zero sequence and negative sequence currents when one of transmission lines is cut off , we can implement two phases operating in high voltage transmission lines , which can improve stability and reliability for the transmission system
统一潮流控制器（ upfc ）是功能最强、最具发展潜力的灵活交流输电系统（ facts ）控制器之一，如果在常规条件下，用upfc实现输电线路的电压调节、移相、潮流控制、阻尼振荡等功能，在发生单相永久性接地或单相断路故障时，由传统的三相跳闸改为单相跳闸，用upfc的并补来滤除两端系统的零序和负序电流，用upfc的串补来提高输电线的传输功率，以实现两相长期运行，那么输电系统的稳定性、可靠性将大大提高。 |
| 7. | The dissertation first generally introduces the present researching and application situation of the domestic and international three fault distance measurement methods which exit now . they are transmission line impedance method and the fault analysis method and the traveling wave method . then , the fault characteristics of the small current grounding system are explained
本文首先概括地介绍了国内外现有输电线路阻抗法、故障分析法及行波法三种故障测距算法的研究及应用现状，说明了小电流接地系统的故障特点。 |
