current limiter

[′kər·ənt ‚lim·əd·ər]

(electronics)

A device that restricts the flow of current to a certain amount, regardless of applied voltage. Also known as demand limiter.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Limiter, Current

(short-circuit current limiter), a device that prevents an increase of the short-circuit current in an electric circuit above permissible or specified amplitudes or effective values. A short-circuit current limiter can reduce the thermal and dynamic stability requirements for electric power transmission. In networks with voltages up to 35 kilovolts, the short-circuit current is limited by means of choke coils and, less frequently, fuses using a fine-grained filler or of the explosive type.

In the early 1970’s, both low-voltage and high-voltage lines were equipped with current limiters having thyristor switches, linear and nonlinear choke coils shunted by high-speed semiconductor switches, and nonlinear choke coils with magnetic biasing.

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References in periodicals archive

Toukhy, "Fault ride-through enhancement of fixed speed wind turbine using bridge-type fault current limiter," Journal of Electrical Systems and Information Technology, vol.

Fault Ride Through Capability Enhancement of a Large-Scale PMSG Wind System with Bridge Type Fault Current Limiters

But the features of the inductive current limiter, using an additional superconducting screen, have not been investigated.

Analysis of the operation peculiarities of the superconducting inductive current limiter with additional superconducting screen

"Fast transient faultcurrent detection based on PQR transformation technique for a solidstate fault current limiter," In Proc.

Designing and simulation of power electronic solid state circuit breaker for medium voltage transmission line protection

It can be seen that the circuit of the active current limiter holds the transistor in the linear region for the time necessary so that the parasitic capacitance is discharged; limiting the current through it to the value defined in (9), in this case a value very close to 8 A.

Comparative Study of SiC Transistors for Active Current Limitation in S3R

Azmy, "Improving fault ride-through capability of DFIG-based wind turbine using superconducting fault current limiter," IEEE Transactions on Applied Superconductivity, vol.

Development of a Voltage Compensation Type Active SFCL and Its Application for Transient Performance Enhancement of a PMSG-Based Wind Turbine System

N., Optimum fault current limiter placement with search space reduction technique, " IET Gener.

OPTIMAL PLACEMENT OF HTSFCL CONSIDERING OF POWER SYSTEM SECURITY AND STABILITY INDICES BY USING DIFFERENTIAL EVOLUTION

Superconducting fault current limiters can limit short-circuit currents in power transmission and distribution grids very quickly, effectively, automatically and, thus, with a high degree of intrinsic safety, making reliable grid operation possible even under difficult conditions.

Superconductors for future power grids

Study on control system of three-phase solid state fault current limiter, Automaiton of Eelcrtic Power Systems, 28 (7) 62-65.

Study on current protection in distribution network with distributed generation

Southern California Edison has a separate project to test another fault current limiter, designed by American Superconductor.

Superconductor security

In one of these, SC Power Systems will develop a 138-kV saturable reactor type of fault current limiter (FCL).

The art of test system development

Holtkoetter is also developing a proprietary electronic current limiter for its torchieres, which it will show at the June Dallas Market.

Industry sees wattage rule hurting torchiere business

A higher wattage bulb does draw more current but in this case the bulb is being used as a current limiter in the circuit.

And electricity may not be the way to go, either