In this section, we delve into a practical case study involving the selection and calculation of a capacitor bank situated within a 132 by 11 KV substation. The primary objective of this capacitor bank is to enhance the power factor of a factory.
If there are more than one capacitor banks in the sub-station, damping reactors of 0.2% rating should be used on the neutral side of the capacitor bank. The inductance value will control amplitude and frequency of the inrush current at back to back switching.
Banks are engineered to meet specific site requirements, including wind, ice, other environmental conditions and seismic-specified loading. Eaton's comprehensive line of Cooper Power series open air substation capacitor bank solutions are available in externally fused, fuseless or internally fused designs.
Another key section is 6.9, which provides physical dimensions for substation equipment. IEEE 18 specifies certain physical dimensions for capacitor units, such as spacing between bushings and the mounting hole spacing.
The uniqueness of this scenario lies in the decision to install the capacitor bank at the 11 KV voltage level, even though the factory receives power from the grid at a higher voltage level of 132kV, with an approved connection capacity of 12 megawatts.
All welded and brazed joints of riser conductor shall be coated with bituminous paint. After completion of installation of capacitor bank the shut down for charging of capacitor bank will be arranged by MSEDCL. For this, the supplier has to intimate MSEDCL in writing about readiness of the capacitor bank.