基于Matlab和ATP的微机距离保护动态仿真

Dynamic simulation of microprocessor-based distance protection based on Matlab and ATP

基于M atlab的M语言,将故障仿真(ATP)和保护仿真(S imu link)集成为一个完整系统。通过M atlab对ATP的调用,实现两个软件之间数据共享;基于S imu link实现了继电保护仿真,得到微机距离保护的误动率、拒动率和平均跳闸时间等性能指标。在软件实现上,采用了软件框架技术,并介绍了整个框架和相关类。该系统实现了故障暂态计算与微机距离保护仿真程序的同步运行,开放性好,集成度高,可视性强。仿真算例表明该系统使用灵活方便,可方便地观测保护内部动作情况、分析继电保护装置的动态特性。

In this paper, the fault simulation sub-system and the protection simulation sub-system are integrated in a system by using Matlab. Matlab and ATP can share the simulation data and the Simulink is used to simulate the relay protection. Then the performance indices of microprocessor-based distance protection, such as the rate of unwanted trip, the rate of failure to trip and the average trip time, can be calculated. The software framework technology is applied in the system and the associated classes are introduced. The integrated system synchronizes fault simulation program and protection simulation program. As a result, the system has the characteristics of openness, integrative and visibility. The simulation demonstrates that the system is flexible and can be used to observe the internal actions of protections, and to analyze the dynamic characteristics of relay protection devices.