Research On The Relay Protection Test Scheme In The Digital Substation

The paper expounds the research of relay protection test scheme in the digital substation. It studies the communication parameter and the disposition of the digital relay protection. And it researches the test item, test method and the attention. It analyzes the difference between the digital relay protection and regular relay protection. And it introduces some problems found in digital relay protection test.The scheme was put to work in digital substations in the South Grid of the Hebei province. It specifies the workflow of the digital relay protection, and increases the quality and efficiency.