Reactive Power Compensation Power Factor Controller

The power factor is represented by cos Φ, which represents the proportion of active power in the line. When cos Φ=1, there is no reactive power loss in the line. Improving power factor to reduce reactive power loss is the ultimate goal of such controllers. This control method is also very traditional, and sampling and control are relatively easy to implement.
*The "delay" setting, the delay time for switching, should be adjusted within the range of 10s-120s for the "sensitivity" setting, and the current sensitivity should not exceed 0-2A.
*The input and cutoff threshold settings should be able to set the power factor within the range of 0.85 (lag) to 0.95 (lead).
*Overvoltage protection setting
*Display settings, loop switching and other functions
This sampling method needs to ensure the stability and absence of oscillation in the line system during operation, while also taking into account the compensation effect. This is a contradiction, and the parameters can only be adjusted to work in a better state according to the specific situation on site. Even if the adjustment is good, it cannot compensate for the shortcomings of this method itself, especially when the line is under heavy load. Example: Setting investment thresholds; Cos Φ=0.95 (lag) At this time, the line is overloaded, and even if the reactive power loss is already large, there will be no overcompensation when the capacitor bank is put into operation. However, as long as cos Φ is not less than 0.95, the controller will not have any compensation instructions and the capacitor bank will not be put into operation. Therefore, this control method is not recommended.