Definition and Connotation of Digital Power System

The definition of digital power system (DPS) is: the physical structure, physical characteristics, technical performance, economic management, environmental protection indicators, personnel status, science and education activities, etc. of a certain actually operating power system. Visualized, real-time description and reproduction. If this is done, we can say that we have established a digital power system for this actual power system. The digital power system of a power system may include the following contents and functions:

a The physical structure of the power system (that is, the real structure), the physical properties of each component (unit), and the overall physical performance, operation mode, operation strategy, management model, and personnel information.

b Real-time state variables (state variables) of various components, networks, and nodes of the power system.

c The operating characteristics of various automatic control devices (including relay protection devices, FACTS devices, power electronic devices, controlled superconducting energy storage devices, etc.).

d The "healthy" status of major equipment such as power plants and substations.

e Economic structure, market information.

f Special natural environments that affect the safety of the power system. For example, an ultra-high voltage line is in a lightning strike area or a typhoon hit, which may cause disasters. The digital power system should prompt the operator to pay special attention to avoid major disasters.

g Technology management and technical personnel management information.

h Environmental indicators and environmental protection equipment investment and operation.

i The real-time efficiency of all aspects of the power system, ie, the efficiency of thermal systems, turbines, generator systems, network losses, and substation users.

j Important information, such as information on talent, information on science and education activities.