| ACE | area control error |
| ACOPF | alternating current, optimal power flow |
| AEMO | Australian Energy Market Operator |
| AGC | automatic generation control |
| AMI | advanced metering infrastructure |
| ARPA-E | Advanced Research Products Agency-Energy |
| ARRA | (U.S.) American Recovery and Reinvestment Act (2009) |
| ASO | Ancillary Services Operator |
| AVR | automatic voltage regulator |
| BMSA | Board on Mathematical Sciences and Their Applications |
| BPA | Bonneville Power Administration |
| CA | contingency analysis |
| CAISO | California Independent System Operator |
| CCVT | coupled capacitive voltage transformer |
| CEII | Critical Energy Infrastructure Information |
| CIP | critical infrastructure protection |
| ConEdison | Consolidated Edison |
| CT | current transformer |
| ∆-connected | delta-connected |
| DA | data assimilation |
| DAE | differential algebraic equation |
| DER | Direct Energy Resources |
| DFIG | doubly fed inductions generator |
| DOE | Department of Energy |
| dPIN | double Pareto-log normal (distribution) |
| DS | dynamic stability |
| DSO | Distribution System Operator |
| EMP | electromagnetic pulse |
| EMS | Energy Management System |
| EP | equilibrium point |
| E-Pro | electric grid protection |
| ERCOT | Electric Reliability Council of Texas |
| EV | electric vehicle |
| FACTS | Flexible Alternating Current Transmission Systems |
| FERC | Federal Energy Regulatory Commission |
| FPC | Federal Power Commission |
| FTR | financial transmission right |
| GENI | Global Energy Network Institute |
| GIC | geomagnetically induced current |
| GMD | geomagnetic disturbance |
| GPS | Global Positioning System |
| GW | gigawatt |
| HEMP | high-altitude electromagnetic pulse |
| HILF | high impact, low frequency |
| HVDC | high-voltage direct current |
| Hz | hertz |
| iBA | intelligent Balancing Authority |
| ICAP | installed capacity |
| ICT | information and communication technology |
| IEEE | Institute of Electrical and Electronics Engineers |
| ISO | Independent System Operator |
| ISO-NE | ISO New England |
| IT SCED | intermediate-term security-constrained economic dispatch |
| KCL | Kirchhoff’s current law |
| kV | kilovolt |
| LFC | load frequency control |
| LMP | locational marginal cost |
| LOLP | loss of load probability |
| LP | linear programming |
| LPC | locational pricing calculator |
| LTC | load tap-changing |
| MCRN | Mathematics Climate Research Network |
| MINLP | mixed-integer nonlinear programming |
| MIP | mixed-integer programming |
| MISO | Midcontinent ISO |
| MPC | model predictive control |
| Mvar | megavar |
| MVA | megavolt-ampere |
| MW/MWh | megawatt |
| NAPSIC | North American Power Systems Interconnection Committee |
| NDA | nondisclosure agreement |
| NEM | National Electricity Market |
| NEPSRC | National Electric Power Systems Research Center |
| NERC | North American Electric Reliability Corporation |
| NR | Newton-Raphson (method) |
| NRC | National Research Council |
| NSF | National Science Foundation |
| NYISO | New York Independent Systems Operator |
| ODE | ordinary differential equation |
| OPF | optimal power flow |
| P | power |
| PC | polynomial chaos (expansion) |
| PID | proportional integral derivative |
| PJM | Pennsylvania-New Jersey-Maryland Interconnection, LLC |
| PMU | phasor measurement unit |
| PSERC | Power Systems Engineering Research Center |
| PSS | power system stabilizer |
| PT | potential transformer |
| PTDF | power transfer distribution factor |
| PU | per unit |
| PV | photovoltaic |
| Q | Reactive Power |
| QC | Quadratic Convex |
| QCQP | Quadratically Constrained Quadratic Program |
| RAS | Remedial Action Scheme |
| RTCA | real-time contingency analysis |
| RTO | Regional Transmission Organizations |
| RT SCED | real-time security-constrained economic dispatch |
| RTU | remote terminal unit |
| SCADA | Supervisory Control and Data Acquisition |
| SciDAC | Scientific Discovery through Advanced Computing |
| SCOPF | security-constrained optimal power flow |
| SCUC | security-constrained unit commitment |
| SDE | stochastic differential equation |
| SDP | semidefinite programming |
| SE | state estimation |
| SFT | simultaneous feasibility test |
| SPD | scheduling, pricing, and dispatch |
| SPP | Southwest Power Pool |
| SPS | Special Protection System |
| SQP | sequential quadratic programming |
| SSCI | subsynchronous control instability |
| SVC | static var compensator |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TCSC | thyristor-controlled series capacitor |
| TEB | transient excitation boost |
| TS | transient stability |
| TVA | Tennessee Valley Authority |
| TWh | terawatt |
| V | voltage magnitude |
| VSD | variable speed drive |
| WAMS | wide-area measurement system |
| WECC | Western Interconnection |
| Y-connected | wye-connected |
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