Design On Power Distribution Automation Terminal

The power distribution terminal is the important constituent in the DA system, is located the foundation course. The DA system real-time data, the breakdown automatic reduction criterion, switching gear data and so on movement operating mode all originate from the power distribution terminal, and carries on the failure isolation, the load shift and through the power distribution terminal restores the power supply to the non-breakdown sector.In understood thoroughly the domestic and foreign power distribution terminal the system present situation and in the trend of development foundation, this article uses atmel Corporation at91r40008 primarily processor, designed one kind"the software operating speed to be quick, the integrated function was formidable"power distribution terminal. In the hardware design, has used the processor peripheral resources fully, and the multichannel synchronization sampling, the redundant reliable remote control electric circuit as well as the photoelectricity coupling switch quantity input entire bes in one organically. Uses the embedded real-time multi-duty operating system in the software design, the deference structurization, the modulation, from the top, gradually the refinement programming thought, has successfully developed the readability strong data acquisition module, the digital quantity load module, the digital quantity output as well as the failure detection module and so on, and seamless submerges them to the overall software frame in.In order to realize the feed line breakdown region isolation and the non-breakdown region restores the power supply, has carried on the feed line failure detection. In the realization method, uses the voltage failure detection method and the electric current failure detection method separately to the voltage switch and the electric current switch. In the article proposed the method already completely applied in the actual product. The experiment and the scene movement indicated that, this system software and hardware coordination good, the movement was reliable, has achieved the anticipated design goal.