A Sensitive Industrial Process Model for Financial Losses Assessment Due to Voltage Sag and Short Interruptions

The financial loss assessment of industrial users due to voltage sag and short interruptions is important for distribution network performance evaluation and power quality enhancement scheme design. Existing assessment models are highly dependent on complete industrial process information, which is difficult to obtain. To solve this problem, a new sensitive industrial process model needs limited industrial processes information is proposed. In the proposed model, the sensitive equipment is modeled by voltage tolerance curves (VTC), and the truth table is used to characterize the logical relationship. As the industrial process information is limited, the boundary value of VTC and partial logical function values of the truth table are uncertain. To determine the model's uncertain parameters objectively, an optimization model with the goal of minimizing the deviation of the assessment loss is constructed, and the details of the algorithm are also given out. An example based on some investigation data is given to verify the effectiveness of the model and show how to use it.