What is Reactive Power Compensation

 When alternating current passes through a purely resistive load, all electrical energy is converted into heat, while when passing through purely capacitive or purely inductive loads, no work is done. That is, no electrical energy is consumed, which is referred to as reactive power. Of course, actual loads cannot be purely capacitive or purely inductive; they are generally mixed loads. Thus, when current passes through them, part of the electrical energy does no work, which is reactive power. At this time, the power factor is less than 1. To improve the utilization efficiency of electrical energy, reactive power compensation is necessary.

      Power loads in the power grid, such as motors and transformers, are mostly inductive reactance. During operation, corresponding reactive power needs to be provided to these devices. After installing capacitive devices such as shunt capacitors and synchronous condensers in the power grid, they can supply part of the reactive power consumed by inductive reactance, reducing the reactive power that the grid power source needs to provide to inductive loads. That is, it reduces the flow of reactive power in the grid, thereby reducing the electrical energy loss caused by transmitting reactive power on transmission lines and improving the operating conditions of the grid. This practice