EMS SCADA SYSTEMS FOR ENERGY STORAGE PROJECTS 

Customized SCADA Systems to meet all Energy Storage Project Requirements

An Energy Management System (EMS) is a supervisory controller that dispatches one or more energy storage/generation systems. It is required to monitor and optimally control each energy storage system, as well as to interoperate multiple energy storage/generation systems.

EMS is required to address two main engineering challenges faced in efficient operation of large-scale energy storage systems:

  • Optimal scheduling of grid energy storage to guarantee safe operation while delivering the maximum benefit.
  • Coordination of multiple grid energy storage/generation systems that vary in size and technology. It is common for the subsystems of an energy storage system to be made by different manufacturers. Therefore, one of functions of EMS is to coordinate their operations.

EMS SCADA Solution Overview

EMS SCADA HMI graphical screens:

      • Web-based
      • Customizable
      • Allows for changes in settings and control modes
      • POI data: MW, MVar, Voltages, Currents
      • Inverter data: MW, MVar, Voltages, Currents
      • Battery System data: SOC, SOH, MW, Voltages, Currents, etc.
      • Battery Module level data: SOC, SOH, temperature, current, voltage, etc.
      • Act as Master Site Controller for real and reactive power commands in compliance with LGIA and PPA
      • Alarms and Events

Nor-Cal’s EMS Solution is custom built to facilitate:

  • ITC compliance: Avoid charging from Grid:
    Log all charging activity to establish 75-100% charging from renewable energy source in first five service years to fully capture the tax credits.
  • Control export of PV Power to Grid per user specific maximum limit by charging ESS.
  • Application to capture solar energy that is otherwise wasted during:
    Mid-day inverter clipping
    Curtailment from the utility.
  • ESS discharge to meet export requirements without exceeding export requirements.
  • Scheduled P/Q control of ESS at any time.
  • Any additional site-specific requirements.

EMS Controller System Operation:

  • Inverter Controller interface
  • Energy applications like energy arbitrage, energy time shift etc.
  • Power applications like ancillary services, AVR, renewable capacity firming etc.
  • Rack and Master BMS interface
  • Controls for battery charging, discharging, balancing and SOC
  • System‐level and component‐specific alarms
  • Instantaneous and automated remote‐shutdown capability
  • Communication interface with customer systems via OPC-UA or DNP3

Hardware:

  • Windows based Virtualized or Standalone Servers for SCADA and Historian
  • GE RX3i – PLC as Power Plant Controller
  • Full SCADA rack with single or redundant PLC(s)
  • Field Network communication enclosures
  • MET Stations (if solar on-site)

Software:

  • Inductive Automation – Ignition HMI + Perspective
  • Canary Labs Historian
  • Kepware
  • Windows based Virtualized or Standalone Servers for SCADA and Historian
  • GE RX3i – PLC as Power Plant Controller
  • Full SCADA rack with single or redundant PLC(s)
  • Field Network communication enclosures
  • MET Stations (if solar on-site)

 

On-site Integration and Testing:

  • Factory Acceptance Testing (FAT)
  • On-site commissioning support 
  • Site Acceptance Testing (SAT)
  • Remote engineering and testing support through COD and Energization

 

Operator Training:

  • Remote, site specific SCADA system training (hardware and software)
  • Additional training options available upon request

On-going Maintenance and Support:

  • Telephonic support
  • Monitored email support (ticketing)
  • Remote assistance using Remote Desktop and a Virtual Private Network 
  • Planned or Emergency On-site Support
  • Quarterly system health check 

 

Battery Manufacturer Experience (sample OEMs)

EMS SCADA Solution Brochure

Energy Storage Highlighted Projects