Research on Topology Recognition Technology Based on Intelligent Measurement Switches

Abstract

Distribution network topology identification provides information on low-voltage station areas in a power system. However, it requires either heavy computation or additional measuring equipment. This paper proposes topology identification technology based on intelligent measurement switches. The topology is identified by using the characteristic current measured by the designed intelligent measurement switch. The modulation/demodulation method and information encoding method for the topology identification are presented. The communication protocol stack structure and message encapsulation format of the topology identification unit are designed. The experimental verification and analysis show that the topology identification technology proposed in this paper has a short identification time and an identification accuracy of 100%, and it can be widely promoted and applied in low-voltage distribution networks.