Functional block · MGSE

Microgrid generator start-failure escalation

Functional block · Microgrids

An independently authored application reference. The drawing shows the named function or circuit relationship; use the project legend and selected equipment documentation for its drafting form and connections.

Browse this installation focus

In plain English

What this block does

Reassigns the documented start demand after the selected generating set fails to become available.

A simple example

In a microgrid power station, the controller can request an additional generator when available reserve falls and later unload a selected machine before its documented stop sequence. For this reference, the drawing identifies “Start request and availability result” at the input and “Alternate generator request” at the output. Escalation must preserve the required reserve policy.

Start request and availabilityresultMGSEAlternate generator request
A reading guide. The entry's original illustration and input/output facts describe this application.

What the drawings help you do

Start at the named input: Start request and availability result. Identify its source device or document and the state represented on the drawing. Follow the named output: Alternate generator request. Cross-reference its destination and separate the command from confirmation that the equipment responded.

Input
Start request and availability result
Output
Alternate generator request
Application reference
An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Read the source: AGC power management options G4, G5 and G8

Schematic · MGSEMicrogrid generator start-failure escalation: original educational illustration
Original educational illustrationSee source and graphic notes

What it represents

Reassigns the documented start demand after the selected generating set fails to become available. Generating-set coordination decides which available machines should operate and how their power contribution is shared. Engine starting, breaker connection, load acceptance and stopping are separate stages with their own feedback.

In a microgrid power station, the controller can request an additional generator when available reserve falls and later unload a selected machine before its documented stop sequence. For this reference, the drawing identifies “Start request and availability result” at the input and “Alternate generator request” at the output. Escalation must preserve the required reserve policy.

Preserve the engine and generator electrical boundaries, command authority and source readiness. Starting duty, minimum loading, synchronising, fuel systems and cooling behavior require the selected generator documentation. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation.

How to read it

  • Start at the named input: Start request and availability result. Identify its source device or document and the state represented on the drawing.
  • Follow the named output: Alternate generator request. Cross-reference its destination and separate the command from confirmation that the equipment responded.
  • Escalation must preserve the required reserve policy.
  • Preserve the engine and generator electrical boundaries, command authority and source readiness. Starting duty, minimum loading, synchronising, fuel systems and cooling behavior require the selected generator documentation.

Information to show or reference

  • Label the source and connection reference for start request and availability result.
  • Identify the destination and defined state of alternate generator request.
  • Record the equipment or control-document revision supporting this functional block.
  • Check this application limit in the project design: Escalation must preserve the required reserve policy.

A distinction that matters

Escalation must preserve the required reserve policy. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

AGC power management options G4, G5 and G8

Public technical context for microgrid generating-set coordination. Generator start/stop, load sharing, reserve and power management. The application text and educational graphic are independently authored; the publisher does not certify this representation.

DEIF · Public reference checked 3 November 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 3 November 2026

Put the reference into a drawing workflow.

Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.

Explore drafting