In the process of calculating SCC at MV bus for a BESS plant. Utility POI fault current is at 40kA. Our only MPT size is 230/34.5, 210/280/350MVA, %Z = 10.5 @210MVA. Based on this the SCC at MV bus is coming around 30kA.
From the BESS Inverter side planning to use TESLA MP2XL megapack rated...
We are looking to calculate Max, Nominal and Min "Load Usage" of a Wind plant at Point of Interconnection (POI). As the load usage depends on wind speeds, operating characteristics of turbines, and reactive/capacitive banks consumption in the substation etc. Please share any ideas or tools that...
Can anyone recommend the good IBR based (Type3,4 wind power plant, solar and BESS) generation controls training that discusses about NERC compliance like MOD, PRC studies. Converters etc?
After having a recent maintenance testing we observed the following C1 test results. The capacitance values are satisfactory but the PF values were increased for some bushings, when compared to Name plate values mentioned in the report.
We also observed change in oil color in the 34.5Kv bushing...
Nuisance tripping issue with one of the feeder protection relays (SEL-351) and the event file shows the 67P1T protection element caused the trip. Due to certain initial energization parameters on a few circuits around the fleet and transformer inrush amps cause nuisance trips upon energization...
As per our study this 138kV, ACSR 795 MCM transmission line at the ambient conditions of(104 °F, 2ft/s, 45° wind angle) result in a conductor temperature of 172.2°F at a Max current of 689A and conductor is rated for a Max temperature of 212° F.
But as per ACSR conductor behavior, as...
I am going through some of the NEPSI webinars and online resources, it was very helpful content on the harmonic filter and capacitor banks. Thank you for the resources.
Our wind turbines experienced an abnormal amount of turbine faults and after investigating we identified that the faults were...
We have 3 phase potential transformer, HV H1 terminal: 34.5kV, conductor 1C, 4/0 AAC. What should be the grounding conductor size on the H2 terminal? Any code reference? PT size 1000VA, Secondary voltage 115/67.08 V
See attached for reference...
We have 125VDC, 400 Amp-Hours Battery bank for our existing Battery charger. We are trying to upgrade our existing Battery charger.
Other than looking into our desired Input/output voltage and current, what are the standards for designing a Battery charger based on Battery bank capacity? Is...
