极性保护

主要用途：低电压整流，高频转换开关和极性保护。

Applications : Low Voltage , High Frequency Inverters , and Polarity Protection Applications .

错极性保护、过充保护、过放保护、过载保护、短路保护。

Wrong polarity protection , over charging protection , over discharging protection , over load , short circuit protection .

电源、控制装置和关键安全部件将使用实体隔离、防护或其他可接受的方法极性保护。

Power sources , controls , and safety critical components will be protected by physical separation , shielding , or other acceptable methods .

对行波电流极性比较式保护做了详细仿真试验与分析，并对影响该保护的影响因素做了相应的分析；

Detailed simulation and analysis on the directional protective relay by detecting current polarity of traveling wave , and additional analysis about some influencing factors .

将形态学的概念引入到电流行波比较式保护原理中，提出了基于形态学梯度变换的超高速电流行波极性比较式保护算法。

Introducing the concept of morphology into the ultra-high-speed protection by traveling wave current polarity comparison , a highly efficient algorithm based on the morphological gradient ( MG ) is proposed .

基于组合模量的行波电流极性比较式方向保护原理

Principle of combination modulus based traveling wave current directional protection with polarity comparison

极性比较式母线保护的研究

The study of bus protection of polarity comparison

新型直流输电行波电流极性比较式方向保护

New Directional Protection Based on Traveling Wave Current Polarity Comparison Used on HVDC Transmission Line

研究了一种新的基于暂态电流极性比较的方向保护技术。

A new directional protection technique based on transient polarity comparison is proposed in the paper .

文中还总结了有机缓蚀剂的极性基团和被保护金属之间的定性匹配关系，它对于评选有机缓蚀剂具有一定参考价值。

The matched relation between the organic inhibitor and the protected metals is qualitatively described according to soft-hard acid base principle and is found of some value to the selection of an organic inhibitor .

仿真试验结果表明，利用小波变换结果来实现行波电流极性比较式方向保护是切实可行的，并且在硬件满足要求的情况下可以投入实际应用。

The results of simulation show that it is practicable for the implementation of the directional protection based on traveling wave current polarity comparison and this device can be put into operation when the communication channel and the hardware are satisfied .

文章提出了基于检测行波电流波头极性的行波电流极性比较式方向保护。

A directional protection based on traveling wave current polarity comparison which is implemented by detecting the polarity of current wavefront of traveling wave is presented .

利用故障分量中的行波首波头的幅值、极性等特征可构成一系列的行波母线保护，如：电流行波母线差动保护、电流行波极性比较式母线保护和暂态行波功率方向母线保护。

The use of amplitude and polarity of traveling wave head can constitute a series of traveling wave based bus protection , such as current traveling wave differential bus protection .