BDS – Global Services & Support Boeing Energy

BDS – Global Services & Support Boeing Energy

Microgrid Operations - Introduction

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 Let’s revisit the DOE Microgrid definition: “A group of interconnected loads and distributed energy resources (DER) with clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid [and can] connect and disconnect from the grid to enable it to operate in both grid-connected or island mode.”

  In addition to normal operations where the optimization targets include economics and carbon, the microgrid must be able to operate independent of the utility grid


Microgrid Operations - Introduction

 There are 3 primary scenarios to transition to island mode: –  Emergency Island when a utility grid outage occurs and significant

DG is online –  Planned Island due to forecasts of severe weather or other factors –  Black start when a utility grid outage occurs and sufficient DG is not

online  The next demonstration will cover the first 2 scenarios

using advanced controls and a combination of real and simulated hardware (Integrid Lab)

 We will also demonstrate seamless resynchronization

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InteGrid Lab Overview

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  The InteGrid Lab is hosted in Colorado State University’s Engines and Energy Conversion Laboratory in Fort Collins, CO

  Jointly Owned and Operated by Spirae and CSU

InteGrid Lab Power System Scale Model

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Wind Turbine Simulation

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  Cummins Diesel   WEG Induction motor generator   125 KW Rating   Software and controls to emulate up to 4

wind turbines   PLC Controls

Two 125kVA Synchronous Generators   Turbo Charged natural gas engines   Same controls as utility class gensets

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  Basler automatic voltage regulator

  Woodward governors & engine controls

  PLC supervisory controls

Switchgear – Substation Emulation

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  1600 A / 480 V /60 Hz Service   Central connect for all assets   Automated breakers for

synchronized resources   1600 A tie breaker with Basler

protective relay   Cable interconnect via overhead

cable tray

Load Bank – User Load Emulation

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  400 KW / 0.8 PF LoadTec air-cooled load bank

  Software & controls to emulate up to 8 feeders

Simulated DoD Microgrid Assets

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Mimicked Components of the DoD Facility MicroGrid for Demonstration

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Utility Point of Common Coupling

Wind Farm

Various Loads Cogeneration

Plant Cogeneration

Plant

Substation/Switchgear


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Wind Farm


Plant Cogeneration

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Substation/Switchgear Control Area Manager

Secure MicroGrid Controller

Control Area Manager

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SAM Simple Asset Manager


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Wind Farm


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Site-Specific Interfaces

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Unit ControlStorage

Unit ControlSwitch Gear

Unit ControlBEMS A

Unit ControlBEMS B

Unit ControlBEMS C

Operations Service Bus (OSB)

Enterprise Control LayerOptimization and Market Interface

Power System Simulation

EnterpriseControl

Area Control Area Control Area Control

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Unplanned Islanding Due to Utility Outage

  Scenario begins with Generator 2 dispatched   (Microgrid Market Operations)

  Utility Outage Occurs and PCC Breaker Opens   Generator is Assigned Frequency and Voltage Master Mode

  (Topology and Asset Mode Management)   Microgrid Controller starts Generator 3 to Share Load

  (Spinning Reserve Management)   Stable Frequency and Voltage in Island Operations

  (Volt/Var Management and Isochronous Generator Control)   Resynchronization

  (Microgrid Master Synchronizer)

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Planned Islanding Due to Emergency Situation

  Microgrid Operator is Notified of Emergency Situation   Islanding Controls Enabled and Soft Islanding is Initiated   Generators Are Brought Online to Bring PCC Exchange near 0

  (Microgrid Import/Export Controls)   Calculating Load Shed Plan for Fast Balancing   Critical Load Reprioritization   Initiate “Hard Trigger” Islanding Controls with Fast Balancing   Islanding - Pre-Load Plan Execution, Open Grid Breaker, and

Generator Mode Change   Enable Load Restoration of Shed Loads   Stable Frequency and Voltage in Island Operations   Resynchronization

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Questions?

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BDS – Global Services & Support Boeing Energy

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