The controller, after some calculations, decides on the capacitor stages closest to these powers and activates them. However, after the capacitors are switched on/off, unlike conventional capacitor switched compensation systems, the reactive powers drawn from each phase of the grid must be of the same type.
The compensator is an extra part that is introduced to the control system's structure throughout its redesign. It is included in order to make up for the system's poor performance. A compensator can be mechanical, electrical, hydraulic, or any combination of these. What is a Compensator? What is a Compensator?
Adjustment can occasionally play a significant role in achieving acceptable feedback performance and system improvement. The reason for this is because we frequently need to adjust or modify the system's parameters. In these situations, a compensator aids in enhancing the functionality of the control system.
The circuit diagram of compensation capacitors and peripheral hardware in the implemented hybrid reactive power compensation system is also given in Fig. 7. As can be seen in this figure, there are six single-phase and two three-phase capacitors. Rated powers of each capacitor are also shown in the same figure.
Although switched capacitors are cost-effective, it is almost impossible to achieve full reactive power compensation with them. Other tools that their reactive power outputs are fully controllable are expensive solutions.
The lead compensator is an electrical network which produces a sinusoidal output having phase lead when a sinusoidal input is applied. The lead compensator circuit in the ‘s’ domain is shown in the following figure. Here, the capacitor is parallel to the resistor R1 and the output is measured across resistor $R_2.