# Microgrid PV ramp-rate coordination

Canonical URL: https://eloragrid.ai/symbols/microgrid-pv-ramp-rate-coordination
Publisher: Elora Grid
Updated: 2026-11-03
Lookup label: MPRC
Drawing use: Schematic
Reference families: Manufacturer

Representation: Functional block
Installation focus: microgrids
Input: PV target and ramp limits
Output: Rate-limited PV target

Constrains the assigned PV target changes according to the selected microgrid operating limits.

## In plain English

### What this block does

Constrains the assigned PV target changes according to the selected microgrid operating limits.

### A simple example

In a microgrid with solar generation, the controller can restrain inverter output when local load and storage cannot absorb the available power. The resource controller reports its own availability and accepted operating limits. For this reference, the drawing identifies “PV target and ramp limits” at the input and “Rate-limited PV target” at the output. Natural resource changes can reduce actual output faster.

### What the drawings help you do

Start at the named input: PV target and ramp limits. Identify its source device or document and the state represented on the drawing. Follow the named output: Rate-limited PV target. Cross-reference its destination and separate the command from confirmation that the equipment responded.

### Terms

- Input: PV target and ramp limits
- Output: Rate-limited PV target
- Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Concept diagram: PV target and ramp limits → MPRC → Rate-limited PV target
A reading guide. The entry's original illustration and input/output facts describe this application.

- [Microgrid processing and control functions](https://productinfo.se.com/esxp_digital_apps_iec/mg/English/BM_ESXP_DG_Microgrid_IEC_0001122076.xml/%24/ESXP_DG_MG_SD_Processing_0001125595)


## What it represents

Constrains the assigned PV target changes according to the selected microgrid operating limits. Renewable-generation coordination connects variable resource availability, inverter operating limits and the microgrid power target. Available solar or wind power, an issued curtailment request and actual delivered power are different signals.
In a microgrid with solar generation, the controller can restrain inverter output when local load and storage cannot absorb the available power. The resource controller reports its own availability and accepted operating limits. For this reference, the drawing identifies “PV target and ramp limits” at the input and “Rate-limited PV target” at the output. Natural resource changes can reduce actual output faster.
Identify the point where power is measured and the system declaring each availability or limit signal. Resource forecasts and controller requests do not guarantee the delivered generation at every instant. 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: PV target and ramp limits. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Rate-limited PV target. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Natural resource changes can reduce actual output faster.
- Identify the point where power is measured and the system declaring each availability or limit signal. Resource forecasts and controller requests do not guarantee the delivered generation at every instant.

## Information to show or reference

- Label the source and connection reference for pv target and ramp limits.
- Identify the destination and defined state of rate-limited pv target.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: Natural resource changes can reduce actual output faster.

## Important distinction

Natural resource changes can reduce actual output faster. 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.

## Facts

- Representation: Functional block
- Installation focus: Microgrids
- Input / boundary: PV target and ramp limits
- Output / connection: Rate-limited PV target
- Lookup label: MPRC is a library lookup label, not a standard device designation.

## Public references

- [Microgrid processing and control functions](https://productinfo.se.com/esxp_digital_apps_iec/mg/English/BM_ESXP_DG_Microgrid_IEC_0001122076.xml/%24/ESXP_DG_MG_SD_Processing_0001125595) — Schneider Electric. Public technical context for microgrid renewable-generation interfaces. Renewable generation dispatch and microgrid source coordination. The application text and educational graphic are independently authored; the publisher does not certify this representation.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.