selectivity line 中文意思是什麼
selectivity line
解釋
選擇線- selectivity : n. 1. 選擇；精選。2. 【無線電】選擇性；選擇度；【物理學】選擇能力；選擇率。
- line : n 1 線；繩索；釣絲；測深度用繩，捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
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For the severe limitation that the selectivity of transient current protection will lose when the fault with small resistance or without resistance takes place at the end of transmission line, the basic reason for the selectivity loss of transient current protection was investigated
摘要針對保護出口處發生金屬性或小電阻短路故障時，暫態電流保護完全失去選擇性的嚴重缺陷，利用時域分析方法，進行了詳細的故障暫態分析和模擬研究。 -
Its application can improve the selectivity and sensitivity of power supply and distribution line protection
其應用可提高供配電線路保護的選擇性、靈敏性與供配電線路運行的可靠性、安全性。 -
The operation characteristic of the new relay is analyzed in theory and verified by the simulation tests. the new relay operates with clear selectivity and high operation speed and can satisfy the demand of the protection for the ehv transmission line. the performance of the fault component impedance relay has been improved and the misoperaion of the healthy phase under cross - country fault and close - in fault have been avoided
理論分析及模擬計算表明，基於自適應補償的突變量距離繼電器有很好的選擇性和速動性，完全能夠滿足高壓線路保護的需要，顯著提高了突變量距離的性能，解決了其在大電源出口單相故障以及正反向復故障可能會誤跳三相的缺點。 -
Traditional protective relays have no or worse communication ability. their settings are gotten off - line and are invariable in operating. so they can not get the optimal protecting effect and can not satisfy selectivity, speediness and sensitivity of power system sometimes
傳統繼電保護無通信能力或通信能力較差，均為孤立的保護，且其整定值均通過離線計算獲得，在運行中保持不變，無法使保護達到最佳保護效果，在靈敏性、選擇性與速動性方面甚至無法滿足電力系統對繼電保護的要求。
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