353 articles
IEEE 1159
IEEE 1159 is an IEEE recommended practice, formally the Recommended Practice for Monitoring Electric Power Quality, that defines terms and categories for sags, swells, and interruptions.
IEEE 1547
IEEE 1547 is the IEEE standard for interconnecting distributed energy resources, including inverters, generators, and converters, with electric power systems, first published in 2003 and revised in 2018.
IEEE 2030
IEEE 2030, formally IEEE Std 2030-2011, is an IEEE standard for smart grid interoperability across power, communications, and information technologies; a revision, project P2030, has been underway since 2023.
IEEE 2800
IEEE 2800 is a 2022 IEEE standard that sets uniform minimum requirements for interconnecting inverter-based resources like solar, wind, and storage plants to transmission systems.
IEEE 519
IEEE 519 is the IEEE standard for harmonic control in electric power systems, first published in 1981 and the principal North American standard for harmonic distortion limits.
IEEE C37.111
IEEE C37.111 is the IEEE standard defining COMTRADE, a file format for storing and exchanging transient waveform and event data from power systems, first published in 1991.
Impedance-based fault detection
Impedance-based fault detection, known in practice as distance protection, is a power system protection method that infers a fault's presence, direction, and location from apparent impedance at the relay.
Impedance-based fault location
Impedance-based fault location is the technique of finding where a short-circuit fault lies on a power line by converting measured voltage and current at the line terminals into a distance.
Insulation coordination
Insulation coordination is the engineering process of selecting insulation withstand levels and surge-protective equipment, chiefly arresters, so power system equipment survives lightning and switching overvoltages at defensible cost.
Inter-area oscillation
An inter-area oscillation is a low-frequency oscillation in a large power grid where geographically separate generator groups swing against each other across weak transmission links, limiting power transfer.
Interconnection queue
An interconnection queue is the list of proposed power plants and storage projects a transmission operator studies before they connect to the grid, a major bottleneck for solar and wind.
Interharmonics
Interharmonics are voltage or current components in a power system whose frequencies are not integer multiples of the fundamental supply frequency, such as 50 or 60 Hz.
Interline power flow controller
The interline power flow controller (IPFC) is a FACTS device proposed in 1999 that uses shared DC-linked voltage source converters to coordinate power flow on two or more transmission lines.
Interphase power controller
The interphase power controller (IPC) is a passive FACTS device that controls power flow between AC transmission networks, introduced in 1994 at CITEQ in Varennes, Quebec.
Islanding
Islanding is the condition where part of an electric power system stays energized after separating from the grid, either deliberately as with microgrids or unintentionally.
Islanding detection
Islanding detection is the set of techniques a distributed generator uses to detect that it has separated from the main grid, so it can stop energizing the isolated section.
Isolated-phase bus
An isolated-phase bus, also called isolated-phase busduct, is a metal-enclosed busbar system carrying very large alternating currents, in which each phase has its own grounded enclosure.
Italy–Montenegro interconnector
The Italy–Montenegro interconnector, known as the MONITA project, is a 445 km HVDC submarine power link between Cepagatti, Italy, and Lastva, Montenegro, inaugurated in 2019 with 600 MW capacity.
John W. Kalb
John W. Kalb was an electric-power engineer at the Ohio Brass Company of Barberton, Ohio, known for full-scale switching-surge and lightning-arrester research on extra-high-voltage transmission lines in the 1960s.
Kontek
Kontek is a 600 MW high-voltage direct current submarine and underground interconnector linking eastern Denmark's grid on Zealand with Germany, in operation since 1995 between Bjæverskov and Bentwisch.
Landis+Gyr
Landis+Gyr Group AG is a Swiss energy technology company headquartered in Cham, Zug, founded in 1896, providing smart metering and grid edge solutions to over 2,000 utilities.
Lattice tower
A lattice tower is a tall, free-standing steel truss framework used chiefly to support overhead power lines and telecommunications antennas, its open lattice letting wind pass through.
Lightning arrester
A lightning arrester, also called a lightning diverter or surge arrester, is a device connected between a power conductor and earth that limits overvoltages by diverting surge current to ground and then restoring its high resistance.
Line-commutated converter
A line-commutated converter (LCC) is a power-electronic converter that changes power between AC and DC using thyristor valves, the conventional technology dominating long-distance bulk HVDC transmission.
Linos J. Jacovides
Linos J. Jacovides is an electrical engineer who led General Motors' Electrovair electric-vehicle program, headed Delphi Research Labs, and was elected to the National Academy of Engineering in 2011.
Load break switch
A load break switch (LBS), also called a switch-disconnector, is a switching device that interrupts load current but not faults, so it is often paired with fuses.
Load shedding
Load shedding is the deliberate, preplanned dropping of electrical load in stages, triggered by falling frequency, to keep a power system stable and prevent a total blackout.
Low-voltage direct current
Low-voltage direct current distributes electrical power as direct current at low voltages, typically 48 to 800 volts, avoiding repeated AC-to-DC conversions in buildings, data centers, telecommunications, and microgrids.
Maasvlakte converter station
The Maasvlakte converter station is the Dutch terminal of the BritNed interconnector at Rotterdam, converting power between the Dutch grid and the subsea link to Great Britain.
Making capacity
Making capacity is the rated peak current, including DC offset, that a circuit breaker can close onto during a short circuit, roughly 2.5 times its breaking current.