DC Microgrid/Camp2019 Notes

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< DC Microgrid
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Some notes from the Microgrid meetings during camp

  • Safetylimit 60V (Europe)
    • Voltage drop over longer distances
  • “Sneaker Power”
    • Loss for Charing/Discharging vs. cable voltage drop
  • SHA2017
    • no batteries were unstrained
    • 48V DC PSU from HP Blade Servers -> Hackable
  • 230V AC as Interconnect?
  • PoE
  • Grid Interconnects
    • Isolation?
    • Fuses/Circuit Breakers
  • “Smart” On/Off switches for devices
    • Special states
      • On (for important devices)
      • On if there is enough power
      • Off
    • How?
      • Dedicated Wireless link
      • Powerline
      • Voltage level
        • Turn off at 38V, turn on at 42V
        • Avoid bouncing
        • Add delay
      • normal network
      • dedicated data cables
  • What do we interconnect?
    • Power sources?
    • Batteries?
  • Create Awareness
    • How much power is used?
    • Display current usage
    • Kits for monitoring village usage
      • eMon Pi
      • Tweet-A-Watt