These batteries work in conjunction with battery chargers to provide essential backup power, support communication systems, and enhance overall substation automation.
What is a substation battery system?
The primary role of the substation battery system is to provide a source of energy that is independent of the primary ac supply, so that in the event of the loss of the primary supply the substation control systems that require energy to operate can still do so safely.
The battery is required to supply the DC electrical requirements of the substation, including SCADA, control, protection indication, communications and circuit breaker switching operations when there is no output from the battery charger. This may be due to a loss of AC supply to the substation or a fault in the battery charger.
What voltage auxiliary supply system is used in power substation?
Today, normal DC auxiliary supply systems in power substation are operating on the 110 V or 220 V level. Battery, charger and distribution switchboard are
Substations with duplicated protection systems shall have dual (2) battery systems - one for each protection system. Substations that do not have remote back-up protection systems shall also have dual battery systems. Substations without duplicated protection systems, and which have remote back-up protection, shall have a single (1) battery system.
Which batteries are used in upseb 132 kV & 220 kV sub-stations?
In UPSEB almost on all the 132 kV & 220 kV Sub-stations two sets of 110 V (for protection) and one set of 48 V (for carrier communication) lead Acid station batteries along with battery chargers are installed. The battery charging equipments comprises of a float charger and a boost charger.
Why do substations need DC auxiliary power systems?
The higher (more important) role the substation plays from the complete distribution or transmission network point of view, the higher are the demands for the substation's DC auxiliary power systems. To meet the increased demands for reliability and availability, the DC system can be doubled (Figure 3).