Introducing the control process of reactive power compensation microcontroller

       In low-voltage power reactive power compensation , the characteristic of single-chip microcomputer control technology is that it changes the manual switching method and realizes the automatic switching of capacity during system operation. The single-chip microcomputer control technology has been improved on the basis of continuous practice. The following is Cook Cooper Electric's introduction to the control process of reactive power compensation single-chip microcomputer.

The single-chip microcomputer is the controller of the reactive power compensation device. The single-chip microcomputer control system is composed of components such as amplifier circuits, comparators, and digital converters. Usually, the control loop of the system is composed of eight capacitors with different capacitance values. The capacitance value is not fixed, but is set accordingly according to different situations.

The control of the single-chip control system is a complex process. It mainly operates according to the different properties of the incoming line circuit to achieve corresponding changes in system control. The incoming line circuit has phase current and line voltage. The device calculates their values ​​and compares the two to determine the nature of the line at a certain point in time.

If the control of the system does not change at this point in time, it means that the comparator has no output state, that is, the nature of the line is resistive load at this time; on the contrary, if the nature of the line is inductive at a certain point in time, the power factor of the incoming line circuit and the analog quantity will form an inversely proportional relationship, and if the analog quantity becomes larger and larger, the power factor will also become lower and lower.

The analog quantity is caused by the inductive nature of the line, and an analog value is output from the comparator. This value will be converted by the scale-to-digital converter and amplified by the output amplifier of the microcontroller. The converted eight-bit value will be amplified, causing the relevant operation reaction of the system, causing eight capacitors to be invested in the control system, causing the system to oscillate, and then put into operation of the control system.

Reactive power compensation has the functions of saving energy and reducing consumption, improving resource utilization and improving the quality of the power grid. The control of reactive power compensation has become the focus of the power sector.