GB/T 36050-2018Rules of time synchronization for power systems (English PDF)

1 Scope

This Standard specifies the terms and definitions, general rules, construction requirements, operation management specifications for the time synchronization system for power systems.

This Standard applies to the planning, design, construction and operation management of the time synchronization system for power systems' dispatchers, transformer substations, power generation plants and power systems on the users' side.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to this document.

DL/T 1100.1, Time synchronism systems of power system - Part 1. Technical specifications

Provisions on the security protection of the electric power monitoring systems (Order no. 14 of the National Development and Reform Commission)

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

5 General rules

5.6 The devices in the time synchronization system for power systems shall have the time synchronization state monitoring management function.

5.7 The time synchronization system for power systems shall be as required by the Provisions on the security protection of the electric power monitoring systems.

6 Construction requirements

6.1 Dispatchers shall be equipped with a unified time synchronization system; the master clock is of a duplicated redundancy configuration; the NTP method is preferably used for the time synchronization of all application systems and equipment of dispatchers.

6.2 Transformer substations shall be equipped with a unified time synchronization system; the master clock is of a duplicated redundancy configuration. The equipment of station level is preferably synchronized using the NTP method; the equipment of bay level and process level is synchronized using IRIG-B codes or PTP messages, preferably IRIG-B codes.

6.3 Power generation plants shall be equipped with a unified time synchronization system; the master clock is of a duplicated redundancy configuration. The background of production control system is preferably synchronized using the NTP method; the equipment such as measurement-control and protection shall be synchronized using IRIG-B codes or PTP messages, preferably IRIG-B codes.

6.4 The power users' side shall be provided with the time synchronization function in relevant equipment in accordance with the technical requirements for time synchronization for power use, electric power measurement and so on.

7 Operation management specifications