Saturated reactor type reactive power compensation device W (SR) Saturated reactor (SaturatedReactor-SR) is divided into two types: self-saturating reactor and controllable saturable reactor. The corresponding reactive power compensation device is also There are two types. The reactive power compensation device with a self-saturating reactor relies on the inherent ability of the reactor to stabilize the voltage. It uses the saturation characteristics of the core to control the amount of reactive power emitted or absorbed. The controllable saturable reactor controls the saturation degree of the core by changing the working current in the control winding, thereby changing the inductive reactance of the working winding and further controlling the size of the reactive current.

SR type static reactive power compensation device belongs to the first generation of static compensator. It has the advantages of fast, reliable, strong overload capability, small harmonic generation and certain ability to suppress three-phase unbalance. However, due to the high cost of the saturated reactor in this device, which is about 4 times that of a general reactor, and the silicon steel sheet of the reactor is in a saturated state for a long time, the core loss is 2-3 times greater than that of a parallel reactor. In addition, this device also has There is vibration and noise, long adjustment time, and slow dynamic compensation speed. Due to these shortcomings, static reactive power compensators of all saturated reactors are rarely used at present, and are generally only used in high-voltage transmission lines. Used