{"schemaVersion":1,"slug":"microgrid-pcc-power-factor-controller","name":"Microgrid PCC power-factor controller","kind":"symbol","abbreviation":"MPPC","aliases":["Microgrid voltage and reactive-power controls","microgrids Microgrid voltage and reactive-power controls","microgrids","Microgrids","PCC active and reactive measurements","Power-factor control demand"],"category":"microgrid-systems","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Controls the documented PCC power-factor objective using compatible resource reactive-power interfaces.","description":["Controls the documented PCC power-factor objective using compatible resource reactive-power interfaces. Voltage and reactive-power control coordinate the AC operating condition of the microgrid resources. A voltage target, reactive-power target and power-factor target represent different control objectives and should have explicit ownership.","In an islanded microgrid, the assigned reference source supports bus voltage while other compatible resources share reactive demand according to the selected control method. Grid-connected operation can use a different objective at the PCC. For this reference, the drawing identifies “PCC active and reactive measurements” at the input and “Power-factor control demand” at the output. Low active power can affect target interpretation.","Show each measured quantity, target and resource capability limit. Control-loop tuning, equipment capability and parallel operation require a validated design rather than an assumed property of the symbol. 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: PCC active and reactive measurements. Identify its source device or document and the state represented on the drawing.","Follow the named output: Power-factor control demand. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Low active power can affect target interpretation.","Show each measured quantity, target and resource capability limit. Control-loop tuning, equipment capability and parallel operation require a validated design rather than an assumed property of the symbol."],"drawingChecklist":["Label the source and connection reference for pcc active and reactive measurements.","Identify the destination and defined state of power-factor control demand.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Low active power can affect target interpretation."],"distinction":"Low active power can affect target interpretation. 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":"PCC active and reactive measurements"},{"label":"Output / connection","value":"Power-factor control demand"},{"label":"Lookup label","value":"MPPC is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-mg-power","relevance":"Public technical context for microgrid voltage and reactive-power controls. 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":["grid-forming-inverter","statcom","microgrid-island-voltage-reference-block"],"artwork":"pi26-microgrid-pcc-power-factor-controller","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"microgrids","family":"microgrid-reactive","input":"PCC active and reactive measurements","output":"Power-factor control demand"},"plainEnglish":{"title":"What this block does","introduction":"Controls the documented PCC power-factor objective using compatible resource reactive-power interfaces.","example":"In an islanded microgrid, the assigned reference source supports bus voltage while other compatible resources share reactive demand according to the selected control method. Grid-connected operation can use a different objective at the PCC. For this reference, the drawing identifies “PCC active and reactive measurements” at the input and “Power-factor control demand” at the output. Low active power can affect target interpretation.","drawings":"Start at the named input: PCC active and reactive measurements. Identify its source device or document and the state represented on the drawing. Follow the named output: Power-factor control demand. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"PCC active and reactive measurements"},{"name":"Output","meaning":"Power-factor control demand"},{"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":["PCC active and reactive measurements","MPPC","Power-factor control demand"],"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-reactive"},"url":"https://eloragrid.ai/symbols/microgrid-pcc-power-factor-controller","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/microgrid-pcc-power-factor-controller.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 voltage and reactive-power controls. 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."}]}