Intermediate System
A Cyber Asset or collection of Cyber Assets performing access control to restrict Interactive Remote Access to only authorized users. The Intermediate System must not be located inside the Electronic Security Perimeter.
- Active Standards
- BAL
- BAL-001-2 – Real Power Balancing Control Performance
- BAL-001-TRE-1: Primary Frequency Response in the ERCOT Region
- BAL-001-TRE-2 – Primary Frequency Response in the ERCOT Region
- BAL-002-3: Disturbance Control Standard – Contingency Reserve for Recovery from a Balancing Contingency Even
- BAL-002-WECC-2a — Contingency Reserve
- BAL-003-1.1 – Frequency Response and Frequency Bias Setting
- BAL-003-2 – Frequency Response and Frequency Bias Setting
- BAL-004-WECC-3: Automatic Time Error Correction
- BAL-005-1: Balancing Authority Control
- BAL-502-RF-03: Planning Resource Adequacy Analysis, Assessment and Documentation
- CIP
- CIP-002-5.1a – Cyber Security – BES Cyber System Categorization
- CIP-003-6 – Cyber Security – Security Management Controls
- CIP-003-8 – Cyber Security — Security Management Controls
- CIP-004-6 – Cyber Security – Personnel & Training
- CIP-005-5 – Cyber Security — Electronic Security Perimeter(s)
- CIP-005-6 — Cyber Security – Electronic Security Perimeter(s)
- CIP-006-6 – Cyber Security – Physical Security of BES Cyber Systems
- CIP-007-6 – Cyber Security – System Security Management
- CIP-008-5 – Cyber Security – Incident Reporting and Response Planning
- CIP-008-6 — Cyber Security — Incident Reporting and Response Planning
- COM
- EOP
- FAC
- FAC-001-3 – Facility Interconnection Requirements
- FAC-002-2 – Facility Interconnection Studies
- FAC-002-3 – Facility Interconnection Studies
- FAC-002-3 — Facility Interconnection Studies
- FAC-003-4 – Transmission Vegetation Management
- FAC-008-3: Facility Ratings
- FAC-010-3 – System Operating Limits Methodology for the Planning Horizon
- FAC-011-3 – System Operating Limits Methodology for the Operations Horizon
- FAC-013-2: Assessment of Transfer Capability for the Near-term Transmission Planning Horizon
- FAC-014-2: Establish and Communicate System Operating Limits
- INT
- INT-001-3: Interchange Information
- INT-003-3: Interchange Transaction Implementation
- INT-004-2: Dynamic Interchange Transaction Modifications
- INT-004-3.1: Dynamic Transfers
- INT-005-3: Interchange Authority Distributes Arranged Interchange
- INT-006-3: Response to Interchange Authority
- INT-006-4: Evaluation of Interchange Transactions
- INT-006-5 – Evaluation of Interchange Transactions
- INT-006-5 – Evaluation of Interchange Transactions
- INT-007-1: Interchange Confirmation
- IRO
- IRO-001-4: Reliability Coordination – Responsibilities
- IRO-002-6 – Reliability Coordination – Monitoring and Analysis
- IRO-006-5: Reliability Coordination — Transmission Loading Relief
- IRO-006-EAST-2: Transmission Loading Relief Procedure for the Eastern Interconnection
- IRO-006-WECC-2: Qualified Transfer Path Unscheduled Flow (USF) Relief
- IRO-006-WECC-3: Qualified Path Unscheduled Flow (USF) Relief
- IRO-008-2 – Reliability Coordinator Operational Analyses and Real-time Assessments
- IRO-009-2 – Reliability Coordinator Actions to Operate Within IROLs
- IRO-010-2 – Reliability Coordinator Data Specification and Collection
- IRO-010-3 — Reliability Coordinator Data Specification and Collection
- MOD
- MOD-001-1a: Available Transmission System Capability
- MOD-004-1: Capacity Benefit Margin
- MOD-008-1: TRM Calculation Methodology
- MOD-020-0: Providing Interruptible Demands and DCLM Data
- MOD-025-2: Verification and Data Reporting of Generator Real and Reactive Power Capability and Synchronous Condenser Reactive Power Capability
- MOD-026-1: Verification of Models and Data for Generator Excitation Control System or Plant Volt/Var Control Functions
- MOD-027-1: Verification of Models and Data for Turbine/Governor and Load Control or Active Power/Frequency Control Functions
- MOD-028-2: Area Interchange Methodology
- MOD-029-2a: Rated System Path Methodology
- MOD-030-3: Flowgate Methodology
- NUC
- PER
- PRC
- PRC-001-1.1 (ii): System Protection Coordination
- PRC-002-2: Disturbance Monitoring and Reporting Requirements
- PRC-004-5(i): Protection System Misoperation Identification and Correction
- PRC-004-WECC-2: Protection System and Remedial Action Scheme Misoperation
- PRC-005-1.1b: Transmission and Generation Protection System Maintenance and Testing
- PRC-005-6: Protection System, Automatic Reclosing, and Sudden Pressure Relaying Maintenance
- PRC-006-3: Automatic Underfrequency Load Shedding
- PRC-006-5 — Automatic Underfrequency Load Shedding
- PRC-006-NPCC-1: Automatic Underfrequency Load Shedding
- PRC-006-NPCC-2 – Automatic Underfrequency Load Shedding
- TOP
- TPL
- VAR
- Glossary