The power system needs to rely on a unified dispatch and command system to achieve normal adjustment and economic operation, as well as safety control, prevention and handling of accidents. According to the scale of the power system, the dispatch and command system is mostly established at different levels, with both division of labor and responsibility, as well as unified command and coordination. Various automation devices are used to establish an automated dispatch system.

Electromagnetic induction furnace is an industrial furnace that uses the principle of electromagnetic induction to melt metal.

The induction furnace uses three types of AC power sources: power frequency (50 Hz or 60 Hz), medium frequency (60-10000 Hz), and high frequency (above 10000 Hz).

Induction furnaces are divided into two categories: induction melting furnaces and induction heating equipment. The former is used for melting or insulation of materials, and the furnace material ultimately becomes liquid; The latter is used for heating materials, including uniform heating of the material as a whole, surface heating, or local heating.

An induction furnace is an electric furnace that utilizes the induction heating effect of materials to heat or melt them. The main components of an induction furnace include sensors, furnace body, power supply, capacitors, and control systems.

The main components of an induction furnace include sensors, furnace body, power supply, capacitors, and control systems.

Under the action of alternating electromagnetic fields in an induction furnace, eddy currents are generated inside the material to achieve heating or melting effects. Under the stirring effect of this alternating magnetic field, the composition and temperature of the materials in the furnace are relatively uniform. The forging heating temperature can reach 1250 ℃, and the melting temperature can reach 1650 ℃.

In addition to being able to heat or melt in the atmosphere, induction furnaces can also heat or melt in vacuum and protective atmospheres such as argon and neon to meet special quality requirements. Induction furnaces have outstanding advantages in permeating or melting soft magnetic alloys, high resistance alloys, platinum group alloys, heat-resistant, corrosion-resistant, wear-resistant alloys, and pure metals. Induction furnaces are usually divided into induction heating furnaces and smelting furnaces.

An electric furnace that uses the induced current generated by an induction coil to heat materials. If heating metal materials, place them in crucibles made of refractory materials. If heating non-metallic materials, place the materials in a graphite crucible. When the AC frequency is increased, the frequency of the induced current correspondingly increases, resulting in an increase in heat generation. The induction furnace heats quickly, has high temperatures, and is easy to operate and control. The materials are less contaminated during the heating process, ensuring product quality. Mainly used for melting special high-temperature materials, it can also be used as heating and control equipment for growing single crystals from melts.

Smelting furnaces are divided into two types: cored induction furnaces and coreless induction furnaces.

The cored induction furnace has an iron core passing through the inductor and is powered by a power frequency power supply. It is mainly used for the melting and insulation of various metals such as cast iron, brass, bronze, zinc, etc., with an electrical efficiency of over 90%. It can utilize waste furnace materials, with low melting costs and a maximum furnace capacity of 270 tons.

The coreless induction furnace is divided into power frequency induction furnace, triple frequency induction furnace, generator set intermediate frequency induction furnace, thyristor intermediate frequency induction furnace, and high-frequency induction furnace without iron core passing through the inductor.