The Research Of Load Characteristic And Modeling Of The Air-conditioner And Voltage Regulator

The air-conditioner, which is one kind of special load effecting the power system stability to a great extent ,is researched carefully in the thesis based on the laboratory test. Its load characteristics are analyzed,including the static characteristics with respect to the voltage and frequency variations .starting characteristics,drop off characteristics,as well as its responses to voltage dips under various conditions. The air-conditioner load model is also built in this thesis. The development and application of a control system for on-load tap changing transformers, which is used in the experiment for researching the power system stability,is introduced in the paper .The experiment results prove that the developed device can simulate all functions of OLTC in application.The experiments conform to the results from digital simulation.