Evaluation of Health Status of Low-voltage Distribution Network Based on Edge Computing

Distribution network is a noticeable part of Energy Internet construction. The operation, maintenance and control of low-voltage distribution network of Energy Internet is of great importance. However, the full collection and calculation of real-time information of equipment in low-voltage distribution network will bring tremendous pressure to communication and main station. Therefore, this paper presents an evaluation method of health status of low-voltage distribution network based on edge computing. In the evaluation method, five indexes are selected to establish the evaluation system of low-voltage distribution network. The indexes are processed consistently, and the indexes dimensionless is processed with extreme value. Then the subjective and objective weights of each evaluation index are obtained by the order relation analysis method and the variation coefficient method which simulate the expertise respectively. Finally, the comprehensive weight of each index is calculated by Lagrange optimal multiplier method, so the evaluation function of health status in low-voltage distribution network is obtained after sorting out. According to the function value, the health status of low-voltage distribution network is reasonably evaluated. The feasibility and efficiency of the evaluation method are verified by the case study of several low-voltage distribution networks in a certain area.