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ZERO DROOP VOLTAGE CONTROL FOR SMART INVERTERS

  • US 20170040799A1
  • Filed: 10/21/2016
  • Published: 02/09/2017
  • Est. Priority Date: 09/16/2011
  • Status: Active Grant
First Claim
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1. A system for controlling grid voltage with a smart inverter, the system comprising:

  • a distribution power network;

    a smart inverter at or near an edge of the distribution power network, the smart inverter configured to, based on a reference Q value, either insert VARs or absorb VARs at or near the edge of the power grid; and

    a reference Q calculator communicatively coupled to or embedded on a controller disposed within the smart inverter, the reference Q calculator comprising a processor and a non-transitory computer readable memory with software embedded thereon, the software configured to cause the processor to;

    receive a voltage measurement taken at or near the edge of a power distribution network, a voltage band value, and a voltage set point value;

    determine a difference, ev, between the voltage measurement and the voltage set point; and

    generate a new reference Q value if an absolute value of ev is greater than the voltage band value.

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