{"schemaVersion":1,"slug":"microgrid-resource-availability-summary","name":"Microgrid resource availability summary","kind":"symbol","abbreviation":"MRAS","aliases":["Microgrid supervisory and communication interfaces","microgrids Microgrid supervisory and communication interfaces","microgrids","Microgrids","Resource readiness and topology","Site resource availability"],"category":"microgrid-systems","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Combines the assigned resource readiness states into the defined site availability display.","description":["Combines the assigned resource readiness states into the defined site availability display. Microgrid supervision coordinates measurements, control authority and resource communication without replacing local protection. Each resource value needs a named measurement boundary, freshness condition and intended control use.","In a microgrid control room, the operator can see source availability, active constraints and current operating mode. A communication failure should remain distinguishable from an electrical resource failure. For this reference, the drawing identifies “Resource readiness and topology” at the input and “Site resource availability” at the output. Available resources can have different operating capabilities.","Identify signal ownership, quality flags, control priority and loss-of-data behavior. These functional references do not certify cyber security, closed-loop performance or equipment interoperability. 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."],"readingNotes":["Start at the named input: Resource readiness and topology. Identify its source device or document and the state represented on the drawing.","Follow the named output: Site resource availability. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Available resources can have different operating capabilities.","Identify signal ownership, quality flags, control priority and loss-of-data behavior. These functional references do not certify cyber security, closed-loop performance or equipment interoperability."],"drawingChecklist":["Label the source and connection reference for resource readiness and topology.","Identify the destination and defined state of site resource availability.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Available resources can have different operating capabilities."],"distinction":"Available resources can have different operating capabilities. 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":[{"label":"Representation","value":"Functional block"},{"label":"Installation focus","value":"Microgrids"},{"label":"Input / boundary","value":"Resource readiness and topology"},{"label":"Output / connection","value":"Site resource availability"},{"label":"Lookup label","value":"MRAS is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-mg-power","relevance":"Public technical context for microgrid supervisory and communication interfaces. Active and reactive power, generation, load control, operating reserves and system supervision. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["microgrid-controller","sequence-of-events-recorder","microgrid-power-balance-event-recorder"],"artwork":"pi26-microgrid-resource-availability-summary","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"microgrids","family":"microgrid-monitoring","input":"Resource readiness and topology","output":"Site resource availability"},"plainEnglish":{"title":"What this block does","introduction":"Combines the assigned resource readiness states into the defined site availability display.","example":"In a microgrid control room, the operator can see source availability, active constraints and current operating mode. A communication failure should remain distinguishable from an electrical resource failure. For this reference, the drawing identifies “Resource readiness and circuit arrangement” at the input and “Site resource availability” at the output. Available resources can have different operating capabilities.","drawings":"Start at the named input: Resource readiness and circuit arrangement. Identify its source device or document and the state represented on the drawing. Follow the named output: Site resource availability. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Resource readiness and topology"},{"name":"Output","meaning":"Site resource availability"},{"name":"Application reference","meaning":"An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections."}],"diagram":"flow","steps":["Resource readiness and topology","MRAS","Site resource availability"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Microgrid control systems","url":"https://selinc.com/services/microgrids-power-management/microgrid-control-systems/"}],"profileId":"power-installation-microgrid-monitoring"},"url":"https://eloragrid.ai/symbols/microgrid-resource-availability-summary","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/microgrid-resource-availability-summary.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-mg-power","publisher":"SEL","title":"Microgrid control systems","url":"https://selinc.com/services/microgrids-power-management/microgrid-control-systems/","scope":"Active and reactive power, generation, load control, operating reserves and system supervision.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for microgrid supervisory and communication interfaces. Active and reactive power, generation, load control, operating reserves and system supervision. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}