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<h6> 来源:www.corilkey.com 发表时间?021-06-16</h6> <div class="container2" id="zoom"> <p> 1、微机综合保护装置可靠性的选择<br />微机综合保护装置的信号输入与传统继电保护相同。电压和电流信号从电压互感器和电流互感器引入,由变送器转换成符合保护装置要求的标准信号,并用滤波器去除低次和高次谐波和其他干扰信号,并通过A/D转换器将模拟量转换为数字信号。CPU对输入的数字信号进行计算并与设定值进行比较进行判断,进而决定是报警还是跳闸?br />2、微机综合保护装置响应时间的选择<br />在设计和选择型号时,我们只能从计算精度、响应时间和计算量来判断保护装置的优劣。设备的计算精度、计算量和响应时间是相互矛盾的。如果计算精度差,计算量小,则响应时间快,反之,响应时间慢。一般来说,电网终端用户确定装置的计算量应大?倍,其计算精度高?.2%,其响应时间应小?0ms,以满足响应时间要求?br />3、微机综合保护装置其他功能选型<br />集成保护装置内有大量集成芯片,保护装置的维护需要较高的专业技术知识。在选择型号时,应尽量选择具有模块化和通用硬件的保护装置。通过更换模块,可以消除保护装置的硬件故障,提高工作效率。另外,保护装置应有自己的EPROM模块,保护装置的整定值可以数字形式存储在EPROM中。现场人员可随时调用设定值调试设备,无需重写数据?br /></p> </div> <style> .title02{background:url(../images/line02.gif) repeat-x left bottom; height:30px;} .title02 span{ background:url(../images/cion04.gif) no-repeat 5px 12px; line-height:30px; padding-left:20px; font-size:14px; color:#212020;} .title02 a{ color:#212020; line-height:30px; padding-right:8px; float:right;} .title02 a:visited{color:#212020;} </style> <div 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