DL/T 5506-2015 in English

This standard provides detailed guidelines for the design of relay protection systems within power systems. It outlines the principles and requirements necessary to ensure the reliability and effectiveness of protection mechanisms. The document covers various aspects including the selection of protective devices, coordination between different protection systems, and the application of protective measures in different power system configurations. It also includes specifications for the setting and testing of relay protection systems to meet operational and safety standards. The standard is structured to support the planning and implementation of protection systems in power networks, ensuring consistent practices across the industry. It serves as a reference for engineers and designers involved in the development of power system protection schemes.