| 1. | Design of microcomputer protection system in gaogang water conservancy hinge
高港水利枢纽微机保护系统 |
| 2. | Calculation for setting - up of microcomputer protection of the hv asynchronous motors
高压异步电动机微机保护的整定计算 |
| 3. | After detailed analysis , the correct expressions are formulated and what the false expressions will bring about to the microcomputer protection is discussed
这里通过详细的数学推导，给出了在不同数学模型下信号相量实部和虚部的具体表达式，并讨论了各种错误在微机保护应用中带来的问题。 |
| 4. | Lzct bushing type current transformer is suitable for is suitable for current measurement ， metering and microcomputer protection of distribution equipments in 35kv and 10kv ac power system
该型电流互感器的环型铁芯和二次绕组采用优质环氧树脂真空浇注在可阻燃的塑料壳体内，防潮湿，性能稳定，无需维护。 |
| 5. | In the course of settling new types of transformer microcomputer protection , it is still a key and difficult problem how to prevent protection miss - operating caused by magnetizing inrush when transformer suddenly is closed in no load
在研究新型微机变压器保护过程中，如何防止变压器突然空载合闸时出现的励磁涌流所造成的保护误动作，仍然是最关键和最困难的问题。 |
| 6. | It not only adapts to the state while only switches act , but also to the state while relay protections act ; in addition , through using electric information collected by microcomputer protection , more accurate results are gained
其主要内容为城市电网继电保护的配置、继电保护的整定值、系统基本参数等。同时通过内存中实时数据库的映射，利用scada系统通道向本系统提供实时遥信信息和遥侧信息。 |
| 7. | The old excitation setting in an _ kang hydro power plant restricts the development of the microcomputer regulator of speed , microcomputer protection and the computer supervisor and control that has altered , has become a bottleneck in improving the level of automation in power plant
安康水电站原励磁装置严重制约已实施改造的微机调速、微机保护、计算机监控作用的发挥，已成为进一步提高电厂整体自动化水平的瓶颈。 |
| 8. | This thesis chooses b spline wavelet that adapts to the analysis of power system signal , and uses the wavelet transformer to analyze the magnetizing inrush current and inner fault current . a transformer microcomputer protection was designed in this thesis , and in the base of intermission angle principle , a new criterion was established , which pierces through the traditional method with accurate measurement of intermission angle , but analyses the wave by wavelet transform . this criterion is lower in hardware , so it will be realized in the existing hardware
本文选择适合电力系统信号分析的b样条函数作为母小波，对励磁涌流和内部故障电流进行小波分析，并设计微机型变压器保护基本配置，在以往间断角原理鉴别励磁涌流的基础上，突破传统精确测量励磁涌流间断角的方法，直接对信号小波变换后的波形进行分析，建立一个新的鉴别励磁涌流判据，该判据对硬件要求不高，可以在现有一般硬件平台上实现；并编写以b样条函数为母小波的小波变换判据算法程序。 |
| 9. | The development about a lot of protection measure to synchronous motor and many kinds of protection device inside and outside our country have been investigated in this thesis , and moreover , a microcomputer protection device for large - scale synchronous motor have been designed in this thesis
本文调查分析了国内外同步电动机各种保护方法和各类保护装置的研究发展状况，结合现实际情况，设计并初步实现了一种性能良好的、实用的、完全能满足现阶段大中型同步电动机保护需要的微机保护装置。 |
