1 TWA is equal to1000 GW.
1 GW is equal to 1000MW.
1 MW is equal to 1000KW.
1 kw equals 1000 watt.
1 watt is equal to 1000 milliwatt.
1 MW is equal to 1000uW (microwatts).
Power system is an electric energy production and consumption system composed of power plants, power transmission and transformation lines, power supply and distribution stations and electricity consumption. Its function is to convert the primary energy in nature into electric energy through power generation devices, and then supply the electric energy to all users through power transmission, transformation and distribution. In order to realize this function, the power system also has corresponding information and control systems at all links and different levels to measure, adjust, control, protect, communicate and dispatch the production process of electric energy, so as to ensure that users can obtain safe and high-quality electric energy.
The main structure of power system includes power supply (hydropower station, thermal power plant, nuclear power plant, etc.) and substation (booster substation, load center substation, etc. ), transmission and distribution lines and load centers. The power supply points are also connected with each other to realize the exchange and adjustment of electric energy between different regions and improve the safety and economy of power supply. A network consisting of transmission lines and substations is usually called a power grid. The information and control system of power system consists of various detection equipment, communication equipment, safety protection devices, automatic control devices, monitoring automation and dispatching automation systems. The structure of electric power system should ensure the reasonable coordination of electric energy production and consumption on the basis of advanced technology and equipment and high economic benefits.