Rasikin Elektrik: Me Kana Sune? (Rasikin Lame)

Me kya da Line Reactor?

Line reactor (ko da zama electrical reactor ko choke) ita ce variable frequency drive (VFD) accessory wanda ya shafi coil of wire wanda yake taimaka wajen gina magnetic field a lokacin da current yake zauna. Wannan magnetic field ya yi hanyar da take da rate da daga cikin current ta zo, saboda haka ya ci gaba harmonics da kuma taimaka VFD su da power system surges da transients.

Abubuwa da Electrical ko Line Reactors

Reactor ya shiga matsayin mutumawa da yake da muhimmanci a kan electrical power system. Reactors suna cikin abubuwan da suke amfani da su don mode of application. Misali:

1. Shunt Reactor

2. Current Limiting and Neutral Earthing Reactor

3. Damping Reactor

4. Tuning Reactor

5. Earthing Transformer

6. Arc Suppression Reactor

7. Smoothing Reactor etc.

Daga matukar da ya shiga, reactors suna cikin abubuwan da suke amfani da su:

1. Air Core Reactor

2. Gapped Iron Core Reactor

Daga matukar da ya shiga, reactors suna cikin abubuwan da suke amfani da su:

1. Variable Reactor

2. Fixed Reactor.

Wadannan nan, reactor ya shiga da abubuwan da suke amfani da su:

1. Indoor Type or

2. Outdoor Type Reactor.

Shunt Reactor

Wannan reactor na iya shiga da shunt a cikin system. Dalilin da shunt reactor ke da shi shine maimaita da capacitive component of current a cikin system. Yana nufin cewa reactor yana amfani da shi don in juye VAR (Reactive Power) da ya faru saboda capacitive effect of the system.

A substation, shunt reactors suka shiga bayan line da ground. VAR da reactor ya juye yana iya zama fixed ko variable saboda system requirement. Variation of VAR a cikin reactor zai iya samun amfani don phase control thyristors ko by DC magnetizing of the iron core. Wannan variation zai iya samun amfani don offline ko online tap changer associated with the reactor.

Shunt reactor na iya zama single-phase ko three-phase saboda configuration of the power system. Shunt reactor na iya zama air-cored ko gapped iron cored saboda designing feature. Wannan na iya zama magnetically shielded ko without a magnetic shield. Shunt reactors na iya zama da additional loading winding for supplying auxiliary power to the system.

Series Reactor

Current Limiting Reactor ita ce Series Reactor. Series Reactors suka shiga bayan system a series. Suna amfani don in ci gaba fault current a cikin system ko in taimaka proper load sharing a parallel power network. Idan series reactor ya shiga bayan alternator, ana zama Generator Line Reactor. Wannan shine maimaita da stresses a lokacin da three-phase short circuit fault.

Series reactor na iya shiga bayan feeder ko electrical bus don in ci gaba effect of short circuit fault a wasu parts of the system. Saboda haka, short circuit current a wannan part of the system zai ci gaba, short circuit current withstand rating of the equipment and conductors of that portion of the system zai iya zama smaller. Wannan take the system cost-effective.

Idan reactor da rating mai kyau ya shiga bayan neutral and earth connection of a system, don in ci gaba line to earth current during earth fault in the system, ana zama Neutral Earthing Reactor.

Idan capacitor bank ya shiga bayan uncharged condition, zai iya kasance high inrush current flowing through it. Don in ci gaba wannan inrush current, reactor ya shiga bayan each phase of the capacitor bank. Reactor used for this purpose is known as damping reactor. Wannan ya ci gaba transient condition of the capacitor. Ya taimaka don in ci gaba harmonics present in the system. These reactors are typically rated with their highest inrush current in addition to its continuous current carrying capacity.

Wave trap connected in series with the feeder line is a kind of reactor. This reactor along with the Coupling Capacitor of the line creates a filter circuit to block the frequencies other than power frequency. This type of reactor is mainly used to facilitate Power Line Carrier Communication. This is called Tuning Reactor. As it is used to create a filter circuit, it is also called a filter reactor. Commonly and popularly it is known as Wave Trap.

In a delta connected power system, a star point or neutral point is created by using zigzag star connected 3 phase reactor, called an earthing transformer. This reactor may have secondary winding to obtain power for auxiliary supply to the substation. That is why this reactor is also referred to as an earthing transformer.

The reactor connected between neutral and earth to limit single phase to earth fault current is called Arc Suppression Reactor.

A reactor is also used to filter out harmonics present in DC power. A reactor used in DC power network for this purpose is called smoothing reactor.

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