What is a static capacitive compensation device?

Static capacitive compensation devices reduce the lagging reactive power component transmitted over the network. If network conditions alter, the required leading reactive power can be matched in steps by adding and taking out single power capacitors (automatic PFC) to compensate the lagging reactive power.

How does a capacitor provide reactive impedance?

Capacitor provides reactive impedance that causes proportional voltage to the line current when it is series connected to the line. The compensation voltage is changed regarding to the transmission angle δ and line current. The delivered power P S is a function of the series compensation degree s where it is given by

What is reactive power of a capacitor?

The reactive power of the capacitor is a function of its rated voltage and current. Three-phase PFC applications have two types of capacitor connections: star and delta. From the formula if we find the with ratio: C will be constant. Example 1: The relationship between active, reactive and real power and cos φ.

What is reactive power compensation & voltage control?

The reactive power compensation and voltage control is primarily performed by selecting shunt devices that are shown in the first line of the figure. The SVCs are capable to present more accurate and smoother control comparing to mechanically switched shunt compensators.

Why are capacitors used to supply reactive energy to inductive loads?

Capacitors are used to supply reactive energy to inductive loads. Reactive energy must be produced as closely as possible to the loads to prevent unnecessary flow of current in the network. This is known as power factor correction. [VAr] The reactive power of the capacitor is a function of its rated voltage and current.

What is reactive power compensation?

Once the problems of reactive power generation, transmission and distribution have been exposed, we will proceed to describe the actions that the customers can adopt in order to avoid or minimize the corresponding penalization in the electricity bill. These actions are covered by the denomination ‘reactive power compensation’.