Modelling for Active Power Characteristic of Electrolytic Magnesium Industry Based on Industrial Process Analysis

As an important high -energy -consuming industrial load, electrolytic magnesium can continuously adjust the power in a large range. It is of great significance to thoroughly tap the power regulation potential of electrolytic magnesium industrial load for improving the flexibility of power system and promoting the consumption of renewable energy. The assessment of power regulation potential depends on the construction of accurate load models. Thus, it is urgent to construct a delicate model for the active power characteristic of electrolytic magnesium industry. Based on analyzing the industrial process of electrolytic magnesium, this paper firstly combs the main electric equipment of electrolytic magnesium industry. Then based on the electrical characteristics of the main electric equipment, this paper constructed their external characteristic models of representing the relationship between active power and voltage, and constructed the active power characteristic model of electrolytic magnesium load by superimposing the power of above models. Finally, this paper used the measured PMU data of a magnesium factory to identify the key parameters of the model and verified the effectiveness of the model by comparing the measured active power curve with the model’s output active power curve and calculating the simulation error.