Reactive power is no work energy, generated by reactive components in an AC power system. Reactive power does not produce work but causes negative economic and technical effects. Therefore, it is necessary to have measures to compensate for reactive power in order to limit the influence of reactive power on the power system as follows:
– Reduce power loss on elements of the power supply system (transformers, lines…).
– Reduce voltage loss on transmission lines.
– Increase power transmission capacity of lines and substations.

With the above important goals, EVNNPC – Phu Tho Power Company coordinated with the contractors that have energised and successfully put into operation the 110kV compensating capacitor with a capacity of 20MVAr at the 110kV Pho Vang Substation, Thanh Son town, Thanh Son district, Phu Tho province. In which, ACEE is the unit that performs all the testing work for the first and second equipment of the 110kV capacitor bank, including the 110kV capacitor and reactor system, the control and protection system for the compensating capacitor. After being put into operation, the 110kV capacitor bank protection control system is connected to the Northern Dispatch Center (A1) and remote control centers through the IEC 61850 communication protocol.

ACEE with a team of experienced technicians combined with a team of young enthusiastic engineers, has put the project into safe and reliable operation, contributing to reducing the amount of reactive power received from the system and improve the power quality for industrial loads of the electricity grid in Thanh Son district in particular and in Phu Tho province in general.