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APTGrid - Microgrid Sustainable Energy Systems

Smart Microgrid System Power Smart Controls & Switchgear Equipment

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Microgrid Sustainable Energy Systems

Master Control Panel

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APT understands the need to have reliable monitoring and control of multiple renewable energy sources. The Microgrid Master Control Panel provides real time integrated control of power production and power consumption for large scale (500kW – 50 MW) microgrids. This involves the aggregation of control for various distributed energy resources (DER) in both grid-connected and grid-isolated modes of operation, instantaneous load matching, and active control of microgrid stability. APTGrid provides useful optimization of the diverse DER in various modes of operation for microgrid sustainable energy systems. It also gives an automatic islanding and active synchronized re-connection of the microgrid loads to the utility power grid. The MMCP is available in NEMA 1 indoor or NEMA 3R outdoor construction.

DER and Energy Storage technologies supported:

  • Natural gas reciprocating engines
  • Natural gas turbines
  • Bio-gas and Landfill gas reciprocating engines
  • Bio-gas and Landfill gas turbines
  • Micro-turbines
  • Battery storage
  • Solar PV array generation
  • Fuel cell generated power
  • Hydro power
  • Wind
  • Battery Storage Driven Generators
  • Other less common DER and Energy Storage such as combined cycle steam generators, flywheel, geothermal, etc.

Microgrid Master Control Panel Features:

  • Isolated or Line-up Integrated or Switchgear Master Control Panel (MCP)
  • Operator Interface:
    • 20″ Color touchscreen
    • Microsoft Windows
    • APT industrial computer (AiPC) equipped with the powerful APTView Control & Monitoring Software
    • Provides SCADA graphical user interface (GUI) for control and monitoring of the MCP functions
    • Allows MCP functions to provide the following:
      • System One-Line
      • Storing all monitored data every minute with date and time stamp
      • Emails can be sent upon any alarm condition
      • Free license remote monitoring and remote-control software
      • Capability of remote system troubleshooting
      • Adjustable setpoints and modes of operation to allow user to adopt the system operation to changing needs

Microgrid Sustainable Energy Systems

Functions & Features

  • SCADA interface with remote monitoring & control
  • kW and KVAR control of DER load to achieve Microgrid system stability by matching the site active and reactive loads with DER active and reactive power production.
  • Optimization of utilization of various DER in grid connected and grid isolated modes of operation to achieve optimal balance between the efficiency and reliability of power delivery.
  • Control and optimization of spinning reserve as required for each mode of operation.
  • Bumpless synchronous load transfer between the DER and Utility Grid.
  • Minimizing the diesel generators fuel consumption, while ensuring the microgrid system stability when operating in emergency standby mode of operation. Emergency operation time can be extended as much as 6 times with the same amount of on-site fuel storage.
  • Peak shaving and renewable DER power production peak shifting control for Load Demand Management.
  • Load shed, load add, and bus load optimization control.
  • Grid frequency and voltage support control.
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Microgrid Sustainable Energy Systems

Control Interfaces

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APTGrid provides native interfaces to APT Automatic Paralleling Switchgear Control panels and APT Master Control Panels, as well as most 3rd party controllers via following native interfaces:

  • Modbus TCP/IP Ethernet, Modbus RTU or Modbus ASCII serial (RS-485/RS-232)
  • Analog voltage interfaces: 0-5 VDC, +/- 10 VDC, 0-3 VDC, 0-10 VDC, +/- 5 VDC, +/- 3 VDC, etc.
  • Analog current interfaces: 4-20 mA, 0-20 mA
  • Microprocessor controlled potentiometer

Digital signals: 24 VDC, 48 VDC, 125 VDC, 120 VAC, etc.
Custom interfaces to 3rd party devices such as (Profibus, DNP, CAN, BACnet, SAE J1939, Caterpillar Data Link, etc.) are available upon request.
APTGrid provides Modbus TCP/IP Ethernet, over copper or fiber, supervisory control and data acquisition interface to higher level SCADA, DCS or building management system.

Microgrid Sustainable Energy System Applications

Hydropower

Natural Gas Reciprocating Engines & Turbines

Wind

Solar PV Array Generation