Abstract
To ensure the safety and efficiency of EAST nuclear fusion devices, the power quality has to be considered. The loads of EAST device are complex and diverse, especially the special loads with high power impact, volatility, randomness and nonlinear characteristic, which causes power quality problems such as voltage sag, harmonic and three-phase imbalance in power network. This paper analyzes the load characteristics of EAST devices and divides them into impulsive loads and conventional loads. The above two types of loads are modeled and simulated respectively, and the effects of loads with different properties on the system are discussed. The results of simulation analysis are of great significance to the next step of formulating corresponding compensation measures and developing control equipment. Therefore, the importance of power quality problems modeling and simulation for power system analysis and control is self-evident.
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