What are the components of the power system?

The main structure of the power system includes power supply, power network and load center. Power sources refer to various power plants and stations, which convert primary energy into electrical energy; power networks are composed of booster substations, transmission lines, load center substations, and distribution lines for power sources. Its function is to boost the electric energy generated by the power supply to a certain level and then deliver it to the load center substation, and then after the voltage is reduced to a certain level, it is connected to the user via the power distribution line. Hundreds of network nodes in the power system are densely intertwined, and active power flow, reactive power flow, high-order harmonics, negative sequence currents, etc. spread across the entire system at the speed of light. It can not only transmit large amounts of electricity, create huge wealth, but also cause major catastrophic accidents in an instant. In order to ensure the safe, stable, and economical operation of the system, various automatic control devices and communication systems must be configured at different levels according to different requirements to form an information and control subsystem. It becomes the neural network that realizes the information transmission of the power system, which makes the power system observable and controllable, so as to ensure the normal progress of the electric energy production and consumption process and the emergency treatment in the accident state.