GB/T 34122-2017 Technical specification for configuration of relaying protection and security automatic equipment of AC 220 kV～750 kV grid

Scope

This standard specifies the basic technical principles for the configuration of relay protection devices, safety automatic devices, relay protection-related equipment, and key secondary circuits in power systems, and sets forth the general requirements for relay protection regarding the structure of primary systems and the selection of primary equipment. This standard applies to AC power grids with voltages ranging from 220 kV to 750 kV, including AC transmission grids, the grid-connected parts of power plants, as well as relay protection configurations for electric railway traction stations and new energy access systems. Note: Relay protection-related equipment refers to devices in substations that jointly perform relay protection functions with relay protection devices, such as tie-line protection channel interface devices, process layer networks, merging units, traditional transformer analog-to-digital conversion components, intelligent terminals, operation boxes, voltage switching boxes, and other equipment.

Development Information

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