The Testing and Diagnostic System on AVR of the Movable Electricity Generating Set

AVR (Automatic Voltage Regulator) is the most important module, which can control the output voltage of generating sets, guarantee the voltage stability, improve power quality and decide the performance of electricity generating sets, so this paper introduces the design method of the AVR detecting and diagnostic system, which based on the fault database. The paper introduces the platform of the testing and diagnostic system on AVR from the hardware and software design, composed of the industrial computer (main controller), the programmed power supply, the data acquisition unit, and the software programmed by Lab Windows/CVI. The FTA (Fault Tree Analysis) method, establish fault database and analyse fault of AVR, is Applyed. Through testing the certain type´s AVR, the method, proposd in the paper, is proved to be feasibile and versatile, and is satisfied with the detection and diagnosis for AVR eventually.