国产继电保护试验仪一般都有针对工频变化量的专用测试菜单，而进口仪器则需预先计算和设置。
The appropriative test menu for "power frequency variation" is normally built in domestic relay protection test instruments, but it should be calculated and set beforehand for imported instruments.
此设计能对目前继电保护装置所要求的项目进行测试和试验，并满足了要求的精度。
The design can be used to test the required testing items of present protective devices and its measuring accuracy is enough.
文章以湖北电网首次黑启动试验为例，讨论制订黑启动过程的继电保护方案的思路和方法。
This paper discusses the method to make protection scheme for system black-start with the case of the first black-start test of Hubei power system.
大多数继电保护暂态试验系统支持这种文件格式。
Most protection transient simulation test systems support this file form.
针对当前母线充电试验时继电保护中存在的一些问题，提出了一种智能型的母线充电保护新方法。
Aimed at the problems of relay protection during charging test of the buses, a new method of intelligent bus-charging protection is presented in this paper.
针对当前母线充电试验时继电保护中存在的一些问题，提出了一种智能型的母线充电保护新方法。
Aimed at the problems of relay protection during charging test of the buses, a new method of intelligent bus-charging protection is presented in this paper.
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