Acronyms Dynamics of Disturbance

ACRONYMS Acronyms 5/8/18

Acronym Expansion

A Symbol for Ampere

ABA Adjacent Balancing Authority

AC Alternating Current

ACB Air Circuit Breaker

ACE Area Control Error

ACSR Aluminum Conductor Steel Reinforced

AEP American Electric Power

AFC Available Flowgate Capability

AGC Automatic Generation Control

AIC Alternative Interpersonal Communication

AIE Area Interchange Error

ALR Adequate Level of Reliability

ANSI American National Standards Institute

AS Ancillary Services

ASCC Alaskan System Coordination Council

ASCII American Standard Code for Information Interchange

ASD Adjustable Speed Drive

ATC Available Transfer Capability

ATF After The Fact

AVR Automatic Voltage Regulator

B Symbol for frequency Bias

β Symbol for frequency response characteristic

BA Balancing Authority

BAAL Balancing Area ACE Limit

BAL Balancing

BCP Blackstart Capability Plan

2Copyright Operations Training Solutions 2015 Acronyms 5/8/18

Acronym Expansion

BES Bulk Electric System

BPA Bonneville Power Administration

BPD Bushing Potential Device

BPS Bulk Power System

BSR Black Start Resource

BSU Black Start Unit

BTU British Thermal Unit

C Symbol for Capacitance

CA Contingency Analysis

CB Circuit Breaker

CBM Capacity Benefit Margin

CCA Critical Cyber Asset

CCPD Capacitively Coupled Potential Device

CCVT Capacitively Coupled Voltage Transformer

CERTS Consortium for Electric Reliability Technology Solutions

CF Compliance Factor

CFC Constant Frequency Control

CIP Critical Infrastructure Protection

CME Coronal Mass Ejection

CNI Constant Net Interchange

COM Communications

COU Commonly Owned Unit

CPC Control Performance Criteria

CPM Control Performance Measure

CPS Control Performance Standard

CPS1 Control Performance Standard 1

CPS2 Control Performance Standard 2

Acronym Expansion

COI California Oregon Interface

CS Circuit Switcher

CSC Current Source Converter

CSV Comma Separated Value

CT Combustion Turbine

CT Current Transformer

CVT Capacitive Voltage Transformer

D Load Damping Formula

DC Direct Current

DCB Directional Comparison Blocking

DCLM Direct Control Load Management

DCS Disturbance Control Standard

DCU Directional Comparison Unblocking

DDR Dynamic Disturbance Recorder

DF Distribution Factor

DME Disturbance Monitoring Equipment

DOE Department of Energy

DP Distribution Provider

DSM Demand-Side Management

DUTT Direct Under-reaching Transfer Trip

1I Symbol used in CPS1 & BAAL for the 1-minute average targeted frequency error

10 Symbol used in CPS2 for the 10-minute average targeted frequency error

EA Emergency Assistance

EACMS Electronic Access Control or Monitoring Systems

EAP Electronic Access Point

EAR Event Analysis Report

ED Economic Dispatch

Acronym Expansion

EDE Energy Deficient Entity

EEA Energy Emergency Alert

EEI Edison Electric Institute

EHC Electro Hydraulic Control

EHV Extra High Voltage

EIR Electric Industry Registry

EM Electromechanical

EMF Electro Magnetic Field

EMF Electro Motive Force

EMS Energy Management System

EOP Emergency Operation & Preparedness

EPRI Electric Power Research Institute

ERCOT Electric Reliability Council of Texas

ERO Electric Reliability Organization

ESP Earth Surface Potential

ESP Electronic Security Perimeter

ETC Existing Transmission Commitments

EWG Exempt Wholesale Generator

F Symbol for Farad

F Symbol for Frequency

FA Frequency Actual

FR Frequency Resonance

FS Frequency Scheduled

FAC Facilities

FAL Frequency Abnormal Limit

FERC Federal Energy Regulatory Commission

FNET Frequency monitoring NETwork

Acronym Expansion

FPA Federal Power Act

FRC Frequency Response Characteristic

FRCC Florida Reliability Coordinating Council

FRL Frequency Relay Limit

FRM Frequency Response Measure

FRO Frequency Response Obligation

FRSG Frequency Response Sharing Group

FTL Frequency Trigger Limit

FTR Firm Transmission Rights

G Symbol for Giga or 109

GCB Gas Circuit Breaker

GIC Geomagnetic Induced Currents

GLDF Generator to Load Distribution Factor

GMD Geo Magnetic Disturbance

GO Generation Owner

GPE Generation Providing Entity

GOP Generation Operator

GSF Generation Shift Factor

GSU Generator Step Up

GW Giga Watt

GWh Giga Watt hour

H Symbol for Henry. Symbol for inertial constant.

HBA Host Balancing Authority

HDF Harmonic Distortion Frequency

HDV Harmonic Distortion Voltage

HIR High Initial Response

HP High Pass

Acronym Expansion

HP High Pressure

HS High Side

HV High Voltage

HVDC High Voltage Direct Current

HZ Hertz

I Symbol for current

IME Interchange Metering Error

IA Interchange Authority

IC Interchange Coordinator

ICCP Inter Control center Communications Protocol

IDC Interchange Distribution Calculator

IEEE Institute of Electrical & Electronics Engineers

IFRO Interconnection Frequency Response Obligation

IME Interchange Metering Error

INT Interchange

IOS Interconnected Operations Services

IOU Investor Owned Utilities

IP Intermediate Pressure

IPP Independent Power Producer

IR Inertia Ratio

IRO Interconnection Reliability Operations

IROL Interconnection Reliability Operating Limit

IROL TV Interconnection Reliability Operating Limit TV

IS Interchange Schedule

ISDN Integrated Services Digital Network

ISN Interregional Security Network

ISO Independent System Operator

Acronym Expansion

IT Interchange Transaction

IT Instrument Transformer

ITC International Transmission Company

ITS Interchange Transaction Scheduler

JOU Jointly Owned Unit

k Symbol for Kilo or 103

kV kilo Volt

kVAr kilo Volt Amperes reactive

kW kilo Watt

kWh kilo Watt hours

L Symbol for inductance

LC-CSC Line Commutated Current Sourced Converter

LDC Load Drop Compensation

LED Light Emitting Diode

LF Load Forecast

LLR Local line Loading Relief

LOF Loss Of Field

LP Low Pressure

LS Low Side

LSE Load Serving Entity

LSF Load Shift Factor

LTC Load Tap Changer

LV Low Voltage

M Symbol for Mega or 106

MAV Mercury Arc Valve

MCP Market Clearing Price

MEL Minimum Excitation Limiter

Acronym Expansion

MHO Ohm spelled backwards (type of distance relay)

MISO Midwest Independent System Operator

MMI Man Machine Interface

MOD Modeling

MOD Motor Operated Disconnect

MRO Midwest Reliability Organization

MSC Mechanically Switched Capacitor

MVA Mega Volt Ampere

MVAr Mega Volt Ampere reactive

MW Mega Watt

MWh Mega Watt hour

N-1 Normal – 1

NAESB North American Energy Standards Board

NARUC National Association of Regulatory Utility Commissioners

NASPI North American Synchro Phasor Initiative

NATC Non-recallable Available Transfer Capability

NERC North american Electric Reliability Corporation

NESC National Electricity Safety Code

NIA Net Interchange Actual

NIS Net interchange Scheduled

NIST National Institute of Standards and Technology

NL Native Load

NLTC No Load Tap Changer

NOAA National Oceanic and Atmospheric Administration

NOPR Notice of Proposed Rule Making

NPCC Northeast Power Coordinating Council

NRC Nuclear Regulatory Commission

Acronym Expansion

NRCan Natural Resources Canada

NUG Non-Utility Generator

NYPP New York Power Pool

OASIS Open Access Same time Information Service

OATT Open Access Transmission Tariff

OLTC Off Load Tap Changer

OOS Out Of Step

OPF Optimal Power Flow

OSL Operating Security Limit

OTC Operating Transfer Capability

OTDF Outage Transfer Distribution Factor

P Symbol for Active Power (MW)

P-V Power versus Voltage

P.U. Per Unit

PA Planning Authority

PACS Physical Access Control Systems

PAR Phase Angle Regulator

PC Planning Coordinator

PCGC Personnel Certification Governance Committee

PCA Protected Cyber Assets

PF Power Factor

PJM Pennsylvania Jersey Maryland

PLC Power Line Carrier

PLC Programmable Logic Controller

PMG Permanent Magnet Generator

PMU Phasor Measurement Unit

POD Point Of Delivery

Acronym Expansion

POR Point Of Receipt

POTT Permissive Over-reaching Transfer Trip

PRC Protection and Control

PS Personnel Subcommittee

PSE Purchasing Selling Entity

PSI Pounds per Square Inch

PSMP Protection System Maintenance Program

PSP Physical Security Perimeter

PSIG Pounds per Square Inch Gauge

PSP Physical Security Perimeter

PSS Power System Stabilizer

PST Phase Shifting Transformer

PT Potential Transformer

PTDF Power Transfer Distribution Factor

PTP Point to Point Transmission Service

PUC Public Utility Commission

PUHCA Public Utility Holding Company Act of 1935

PURPA Public Utility Regulatory Policies Act of 1978

PUTT Permissive Under-reaching Transfer Trip

PX Power Exchange

Q Quality

Q Symbol for Mvar

QF Qualifying Facility

R Symbol for Resistance

RAAI Reliability Adjustment Arranged Interchange

RAS Remedial Action Scheme

RATC Recallable Available Transfer capability

Acronym Expansion

RBC Reliability Based Control

RC Reliability Coordinator

RCIS Reliability Coordinator Information System

RE Regional Entity

RE Reliability Entity

RF Reactive Factor

RFC Reliability First Corporation

RFI Request for Interchange

RMS Root Mean Square

ROP Rules of Procedure

ROW Right Of Way

RP Resource Planner

RPM Revolutions Per Minute

RRO Regional Reliability Organization

RRSG` Regulation Reserve Sharing Group

RSG Reserve Sharing Group

RTCA Real Time Contingency Analysis

RTG Regional Transmission Group

RTO Regional Transmission Organization

RTU Remote Terminal Unit

S Symbol for MVA

SAC Standards Authorization Committee

SCADA Supervisory Control And Data Acquisition

SC-VSC Self Commutated Voltage Sourced Converter

SCR Short Circuit Ratio

SCR Silicon Controlled Rectifier

SE State Estimator

Acronym Expansion

SERC Southeastern Electric Reliability Council

SESC Space Environmental Service Center

SF6 Symbol for Sulfur hexa-Fluoride gas

SIL Surge Impedance Loading

SMD Solar Magnetic Disturbance

SMD Standard Market Design

SMS Single Most Severe

SO System Operator

SOE Sequence of Events

SOL System Operating Limit

SPP Southwest Power Pool

SPS Special Protection System

SSR Sub Synchronous Resonance

STATCOM Static Compensator

SVC Static Var Compensator

SVS Static Var System

SWPC Space Weather Prediction Center

T&D Transmission and Distribution

TCF Total Capacity of Facilities

TCR Thyrister Controlled Reactor

TDF Transmission Distribution Factor

THD Total Harmonic Distortion

TLB Tie Line frequency Bias

TLR Transmission line Loading Relief

TOP Transmission Operator

TO Transmission Owner

Acronym Expansion

TOP Transmission Operations

TOU Time Of Use

TOV Transient Over Voltage

TP Transmission Planner

TRE Texas Reliability Entity

TSP Transmission Service Provider

TPL Transmission Planning

TRM Transmission Reliability Margin

TRMID Transmission Reliability Margin Implementation Document

TSA Transient Stability Analysis

TSC Thyrister Switched Capacitor

TSIN Transmission System Information Network (Used as the EIR)

TTC Total Transfer Capability

TV Time Value

TVA Tennessee Valley Authority

TVMP Transmission Vegetation Management Program

UC Unit Commitment

UF Under Frequency

UFLS Under Frequency Load Shedding

UHV Ultra High Voltage

ULTC Under Load Tap Changing

UPS Uninterruptible Power Supply

URAL Under excited Reactive Ampere Limit

UTC Universal Coordinated Time (French acronym)

UVLS Under Voltage Load Shedding

V Symbol for Volt

Acronym Expansion

VA Volt Ampere

VAR Voltage and Reactive

VSC Voltage Sourced Converter

V-Q Voltage versus Q (for reactive power studies)

VT Voltage Transformer

W Symbol for Watt

WACS Wide Area Control System

WAMS Wide Area Monitoring System

WebSAS Web based Security Analysis System

WECC Western Electricity Coordinating Council

WEQBPS Wholesale Electric Quadrant Business Practice Standard

WART Wide Area Reliability Tool

XC Transmission line capacitive reactance

XL Transmission line inductive reactance

YTD Year To Date

Z Symbol for impedance

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