Traction substation PHM

1. PHM system network architecture

The PHM system is divided into three layers: station control layer, interval layer, and process layer. The interval layer provides online monitoring data collection, temporary storage, data model construction, and partial single item data analysis functions for devices; The station control layer provides comprehensive data analysis, data forwarding, and local human-machine interface functions for the entire station, while the process layer accurately and stably collects operational data from sensors of various professional monitoring units.

The process layer is mainly composed of various professional sensors, which can be collected and uploaded through various methods such as wired networking, wireless networking, and networking of devices with RF functions.

The station control layer is equipped with station level monitoring units and communication management units. The monitoring units collect data from on-site monitoring IEDs, organize the data, and upload it according to standard protocols. And configure workstations on site, deploy high-voltage equipment status monitoring systems for querying and managing equipment status and operational data within the station.

2. PHM features and functions

The equipment status online monitoring and fault prediction and health management system is suitable for substations with voltage levels of 35kV and above, electrified railway traction stations, etc. Functionally, all primary equipment in the station can continuously collect information parameters that reflect the insulation status of power equipment during operation, providing a basis for condition based maintenance. We have established a comprehensive data warehouse and integrated intelligent technology to extract insulation symptoms. With powerful data analysis capabilities, we can automatically screen electrical equipment with abnormal parameters based on monitoring data, generate relevant monitoring information including parameter change trend charts, and provide expert level high-voltage equipment fault prediction and health management.    

3. Technical features

1) One stop all solution;    

2) Seamless integration of 61850 into digital power station systems;    

3) Multi sensor fusion power transmission and transformation status monitoring network;    

4) Layered structure facilitates functional expansion and meets the constantly evolving new demands of the power system;

5) The platform is universal and highly reliable, making the development of application systems more convenient and professional;

6) Cross platform design, capable of running on multiple hardware platforms and operating systems;

7) Standardized design, application of IEC 61850, SVG, Unicode;

8) Integrated design, seamless integration and unified management of applications;

9) Intelligent design, configuration, and operation management;

10) Flexible and convenient system functions;

11) The sensor network, communication network, Internet, Internet of Things, and ubiquitous network technologies are integrated and applied to fully share resources and achieve centralized, efficient, scientific, and advanced integrated management.

4. Software functions

1) 618500 communication function, providing basic data collection function.

2) On site online monitoring panoramic data storage and historical data browsing.

3) Alarm function, providing graded alarm prompts for fault information of various online monitoring functions.

4) Analysis functions such as data trend analysis, multi threshold alarm analysis, and data correlation analysis.

5) Data display: one-time wiring diagram, report, curve, etc.

6) Specialized analysis function:

7) Equipment management function:

  a、 Add and remove online monitoring devices, and monitor their operational status.

  b、 Equipment operation plan management and operation parameter setting.

  c、 status assessment

  d、 Fault diagnosis and prediction

  e、 Maintenance Decision

  f、 Equipment Health Management

 

Software System Function Diagram:

5. PHM software interface