DL/T 1971-2019 in English

Analysis of the core content of the standard

DL/T 1971-2019 is my country's first operation and maintenance standard specifically for the online monitoring system of hydro-turbine generator sets. It has constructed a three-level technical framework including host computer unit, data acquisition unit and sensor unit. For the first time, the standard defines 7 mandatory requirements for system operation, including:

Key technical requirements

3.1 Operation management

The standard requires the establishment of a three-level inspection system: daily inspection (weekly), regular maintenance (half a year), and special maintenance (combined with unit overhaul). A typical example is that the Three Gorges Power Station uses intelligent inspection robots in conjunction with manual inspections to increase the fault detection rate by 40%.

3.2 Maintenance specifications

Appendix A lists in detail the 12 types of common faults treatment solutions, such as the use of special cleaning agents for oil pollution in sensors, and the gap deviation of vibration sensors should be controlled within the range of ±0.2mm.

Implementation suggestions

Standard evolution analysis

Compared with the 2013 version of the technical guidelines, this standard adds: ①Network security equipment operation and maintenance requirements ②Magnetic flux density sensor calibration specifications ③Data integrity verification mechanism. Future revisions may include technical content such as IoT interface specifications and AI diagnostic modules.