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Hitachi supports minimum outage duration and stabilizes voltage with mass PV connection

Distribution automation


Primary function
Primary function
Automatic power restoration Voltage stabilization control Loss minimization calculation
Network state estimation Optimal feeder configuration determination  

Automatic power restoration

Power restoration for the affected area within just a few minutes after the power failure

Annual Interruption duration per user in Japan is the shortest in the world

Voltage stabilization control to support mass PV connection


  • Maintain proper system voltage by high-speed operation of voltage control equipment in response to the power variation of solar power plant
  • Determine optimal control of the devices based on the sensor information of the distribution system

DMS:Distribution Management System, EMS:Energy Management System, GIS:Geographic Information System, 
PV:Photovoltaic, SVC:Static Var Compensator, SVR:Step Voltage Regulator, LRT:Load Ratio Control Transformer, 
LDC:Line Drop Compensator, FTU:Field Terminal Unit, RTU:Remote Terminal Unit, GPS:Global Positioning System, 
FEP:Front End Processor, FCB:Feeder Circuit Breaker