{"schemaVersion":1,"slug":"microgrid-restoration-inrush-reserve-check","name":"Microgrid restoration inrush-reserve check","kind":"symbol","abbreviation":"MRIC","aliases":["Microgrid black-start and restoration controls","microgrids Microgrid black-start and restoration controls","microgrids","Microgrids","Available margin and connection demand","Restoration reserve check"],"category":"microgrid-systems","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Identifies the declared source margin considered before introducing the assigned load or transformer.","description":["Identifies the declared source margin considered before introducing the assigned load or transformer. Black-start and restoration control coordinates the establishment of an electrical reference and the gradual return of assigned resources and loads. A dead system, an available starting source and a successful load restoration are distinct states.","In a microgrid recovering from a blackout, an available grid-forming source can establish the assigned island reference before compatible generation and eligible load groups are introduced under the validated restoration strategy. For this reference, the drawing identifies “Available margin and connection demand” at the input and “Restoration reserve check” at the output. Transient performance needs validated studies.","Show the prerequisites and confirmation at each control boundary. These original explanatory blocks are not an operating procedure; energization, protection, transformer inrush and motor reacceleration require system-level validation. 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: Available margin and connection demand. Identify its source device or document and the state represented on the drawing.","Follow the named output: Restoration reserve check. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Transient performance needs validated studies.","Show the prerequisites and confirmation at each control boundary. These original explanatory blocks are not an operating procedure; energization, protection, transformer inrush and motor reacceleration require system-level validation."],"drawingChecklist":["Label the source and connection reference for available margin and connection demand.","Identify the destination and defined state of restoration reserve check.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Transient performance needs validated studies."],"distinction":"Transient performance needs validated studies. 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":"Available margin and connection demand"},{"label":"Output / connection","value":"Restoration reserve check"},{"label":"Lookup label","value":"MRIC is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-mg-study","relevance":"Public technical context for microgrid black-start and restoration controls. Storage, protection, black start, load restoration and coordinated island operation. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["grid-forming-inverter","microgrid-controller","microgrid-restoration-abort-condition-interface"],"artwork":"pi26-microgrid-restoration-inrush-reserve-check","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"microgrids","family":"microgrid-restoration","input":"Available margin and connection demand","output":"Restoration reserve check"},"plainEnglish":{"title":"What this block does","introduction":"Identifies the declared source margin considered before introducing the assigned load or transformer.","example":"In a microgrid recovering from a blackout, an available grid-forming source can establish the assigned island reference before compatible generation and eligible load groups are introduced under the validated restoration strategy. For this reference, the drawing identifies “Available margin and connection demand” at the input and “Restoration reserve check” at the output. Transient performance needs validated studies.","drawings":"Start at the named input: Available margin and connection demand. Identify its source device or document and the state represented on the drawing. Follow the named output: Restoration reserve check. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Available margin and connection demand"},{"name":"Output","meaning":"Restoration reserve check"},{"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":["Available margin and connection demand","MRIC","Restoration reserve check"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Avista Shared Energy Economy microgrid protection and control case study","url":"https://selinc.com/api/download/135486/"}],"profileId":"power-installation-microgrid-restoration"},"url":"https://eloragrid.ai/symbols/microgrid-restoration-inrush-reserve-check","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/microgrid-restoration-inrush-reserve-check.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-study","publisher":"SEL","title":"Avista Shared Energy Economy microgrid protection and control case study","url":"https://selinc.com/api/download/135486/","scope":"Storage, protection, black start, load restoration and coordinated island operation.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for microgrid black-start and restoration controls. Storage, protection, black start, load restoration and coordinated island operation. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}