Load model development based on monitoring and laboratory staged testing

The paper presents a load model to assess the voltage stability margin of power system with a large share of air conditioning (AC) load. The first part of the paper describes the laboratory tests performed on a set of electrical appliances and the dedicated load monitoring campaign performed in the power system of Dubai (UAE). It illustrates the non linear nature of the load following large disturbances. The second part of the paper presents a general methodological approach to model at system level the distributed undervoltage relays embedded in the electrical AC appliances single and three phase LV connected and MV connected appliances.