Systems and methods for real-time DC microgrid power analytics for mission-critical power systems
摘要
說明書
For fuses/switches, a selection can be made, as appropriate, between use of the symmetrical rating or asymmetrical rating for the device. The Multiplying Factor (MF) for the device can then be calculated in step 1304. The MF can then be used to determine Iadjasym or Iadjsym? In step 1306, it can be determined if the device rating is greater than or equal to Iadjasym or Iadjsym. Based on this determination, it can be determined whether the device passed or failed in steps 1308 and 1310 respectively, and the percent rating can be determined in step 1312 using the following: % rating=Iadjasym*100/device rating; or % rating=Iadjsym*100/device rating.
For LVCBs, it can first be determined whether the device is fused in step 1314. If the device is not fused, then in step 1315 it can be determined whether the X/R is known for the device. If it is known, then the LVF can be calculated for the device in step 1320. It should be noted that the LVF can vary depending on whether the LVCB is an instantaneous trip device or not. If the X/R is not known, then it can be determined in step 1317, e.g., using the following:
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- PCB, ICCB=6.59
- MCCB, ICCB rated<=10,000 A=1.73
- MCCB, ICCB rated 10,001-20,000 A=3.18
- MCCB, ICCB rated>20,000 A=4.9
