数字式距离保护装置的动态特性仿真系统

Dynamic characteristic Simulation System of Digital Distance Protection

数字式保护装置在超高压线路得到广泛的应用,目前电力系统的运行方式复杂、变化频繁以及保护装置的软件实现对用户带来的不透明性,给继电保护装置的运行分析带来很大的困难。基于Matlab的M语言,通过采集故障录波数据和采用电磁暂态仿真程序(EMTP)数据仿真实际电力系统数字式距离保护装置的动作逻辑,分析数字式距离保护装置的动态特性。该系统实现了故障暂态计算与数字式距离保护仿真程序的同步进行,通用性好,可视性强,使用灵活,具有较大的实用价值。

Digital protection has been widely applied in extra high voltage(EHV) lines,the current operation manner of the power system is complicated and changes frequently,and the protection are realized by software makes the protection device is difficult to understand for users,both of this cause great difficulty in the analysis of operation of digital distance protection.In this paper,by using the Matlab,the trouble record wave data and the EMTP data to emulate actual power system digital distance protection set are gathered,and the dynamic characteristic of digital distance protection is analyzed.The system synchronizes fault transient calculation and digital distance protection simulation program.As a result,the system is versatile,visibility,flexible and practicable.