IROL definition

IROL means the value (such as MW, MVAR, Amperes, Frequency, or Volts) derived from, or a subset of, the System Operating Limits, which if exceeded, could expose a widespread area of the bulk electrical system to instability, uncontrolled separation(s) or cascading outages.
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IROL means the Interconnected Reliability Operating Limit.
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Examples of IROL in a sentence

  • If a transmission planning activity identifies a SOL or IROL may be exceeded in the operating horizon, System Operations Engineering should be immediately notified.

  • These conditions could be IROL conditions after studies later determine that the operator could run the risk of cascading outages.

  • WECC Application of SOL and IROLSource:http://www.wecc.biz/documents/meetings/OC/CMOPS/2007/August/WECC%20Philosophy%20of%20SOL-IROL.pdf Issue: NERC Reliability Standards include references to System Operating Limit (SOL) and Interconnection Reliability Operating Limit (IROL) and WECC needs to determine how these definitions apply in the Western Interconnection.

  • In accordance with FAC-003-4 Applicability – Transmission Facilities 4.2.2, if an overhead transmission line operated below 200 kV is identified as an element of an IROL, DEC’s Vegetation Management must be notified.

  • Both Parties will take coordinated corrective actions to avoid a violation of the IROL.

  • The SOL or IROL information shall also be provided to adjacent Planning Authorities and adjacent Transmission Planners.

  • Transmission Planning activities develop Corrective Actions Plans to address possible SOL or IROL exceedances in the Near-Term Transmission Planning Horizon that are annually shared with System Operations Engineering (as DEC’s Transmission Operator and Reliability Coordinator) in accordance with FAC-014-3 via a Planning Assessment document.

  • For a voltage or stability limit, the TFC is equal to the flow limit that will respect the SOL or IROL.

  • This IROL is adhered to in order to ensure acceptable steady-state and transient performance of the New York and New England Transmission Systems.

  • SOL or IROL limit violations identified in the planning horizon should be corrected and/or mitigated in advance of the operating horizon.

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