GB/T 40604-2021 in English

Analysis of the core content of the standard

This standard systematically regulates the full-business information interaction system between new energy stations and dispatching agencies for the first time. The main technical breakthroughs are reflected in:

• A four-level operation status model is established: normal power generation, off-site restrictions, on-site restrictions, standby and other states are clearly defined
• Innovative network security monitoring requirements are proposed: it is required to deploy network security monitoring devices to achieve full-factor monitoring of host/network/security equipment
• Detailed time performance indicators: such as SOE resolution ≤1ms, PMU data delay ≤50ms, etc.

Comparative analysis of key technologies

Typical application scenarios

Analysis of Standard Evolution

Compared with the early NB/T series industry standards, this standard has the following major improvements:

1. Expanded data scope: New data such as network security monitoring (Chapter 5.9/6.9) and subsynchronous oscillation monitoring (Article 5.4.1.2)
2. Improved timeliness index: Increased SOE resolution from 10ms to 1ms
3. Unified communication protocol: Clarified the application scenarios of 8 protocols such as DL/T634.5104

Implementation suggestions

• Equipment selection: Select PMU devices that support GB/T26865.2 protocol
• System transformation: Improve the IEC104 communication interface of the monitoring system in accordance with Article 4.2
• Test verification: Focus on testing the ultra-short-term power prediction data delay in clause 5.6.2