SVC

Product Name: SVC Model NO.: Static Var Compensator Inductor Value: Fixed Inductor Brand: Jingcheng Electric Packaging Form: Generic Range of Application: Choke Structure of Magnetizer: Iron Core Coil Nature of Operation: Choke Coil Structure of Winding: Multilayer Coil Working Frequency: Low Frequency Structure: Inductive Choke Type: Fixed Inductor Trademark: Jingcheng electric Transport Package: Wooden Package Specification: copper or aluminum Origin: China HS Code: 8504500000 Product Description Static Var Compensator adopts DC magnetic auxiliary controllable reactor. Its principle is to use additional DC excitation to magnetize the core, change the core permeability, and realize the continuous adjustment of reactance value. Its internal structure is static without moving parts and has high reliability.The single-phase controllable reactor adopts the four column core structure as shown in the figure. There are several small section sections distributed on the two working core pillars in the middle. Within the whole capacity regulation range of the reactor, only the magnetic circuit of the small section core works in the saturation area, while the large section always works in the unsaturated linear area, and the coil is sheathed on it.Two coils with N / 2 turns are symmetrically wound on the working core column of controllable reactor.There are different tap ratios of N and T 2 between themThe two main windings are connected in parallel to the power supply after cross connection, and the freewheeling diode is connected in the middle of the two coils.When the reactor winding is connected to the power supply voltage, about 1% of the power supply voltage is induced at both ends of the thyristor T1 and T2Voltage. The thyristor T1 is triggered on by the positive half cycle of the supply voltage to form the equivalent circuit shown in Fig. 3 (a), where N1, N2 generate DC control currents Ki and Ki in the loop, and the negative half cycle of the supply voltage triggers the conduction.Through the thyristor T2, the equivalent circuit shown in Fig. 3 (b) is formed, and the DC control current Ki and Ki are formed in the circuit. A power frequency cycle turns on T1 and T2, resulting in DC control current Ki and Ki, which makes the reactor work.When the core is saturated, the output current increases. The output current of controllable reactor depends on the control angle of thyristor,The smaller the control current is, the stronger the control current will be, and the higher the saturation degree of the reactor core will beThe bigger the flow. Therefore, the reactor capacity can be adjusted smoothly by changing the thyristor control angle.