This paper introduces the hardware component,principle and foundation of protective configuration of new-generation protection and control device that is applied to automatic block(power continuous) line of railway distribution substation.

First, the paper gives an introduction about the development of direct current power supply system in railway transformer substation.

Summary: Current change to go together with the extension that transformer substation with set up transformer substation start construction to have a dissimilarity,demand the side circulate side construction,install difficulty big,the safe problem is outstanding and adjust to try process complications.

This article introduces the technical features of design of power supply and distribution for Ningbo resi- dential engineering and presents a de- tailed analysis of the load statistics and computation in Ningbo residential engineering,configuration of substation and distribution station of a quarter,and power distribution requirements for in- door and outdoor engineering.

Starting from the status of the power test in Chinese railway, illustrates the purpose of establishing the automatic inspection system of substation and distribution station in two aspects of automatic inspection and data management, introduces the components, functions, the key techniques, main features and detailed application in power test.