Tambayar Daƙiƙa game da Abubuwa na Kiyaye Fadada Cikin Kirkiro na Tsakiyar Gwamnati Don Iya Amfani Da Su

Tashin kai tsaye na gida yana taka muhimmanci wajen kadan sadarwa da kuma tattara cikin tattalin arziki a gida. A lokacin da ya bazu suna, muka yi aiki a cikin takawa masu sauri da kuma abubuwan tashin kai tsaye na gida. A cikin tashin kai tsaye na gida, gwamnati 10kV ke shafi da suka amfani da gwamnati 10kV outdoor auto circuit vacuum reclosers.

Don in ba da yanayi, muka yi harkokin da ake fito da ita da kake cire control unit daga 10kV outdoor auto circuit vacuum recloser kuma kake zama outdoor vacuum circuit breaker. Wannan ta haɗa da tambayar yadda za a yi ingantaccen protection da control circuits don in ba da shi a cikin integrated monitoring system mai karatu. Wannan maza da amsa tushen da ke danganta zai iya bayyana a nan.

1. Tsarin Daular 10kV Outdoor Auto Circuit Vacuum Recloser

10kV outdoor auto circuit vacuum recloser yana gudanar da switching, control, protection, da kuma monitoring functions a cikin wata. Yana zama wurin aikinsa da ake amfani a kan distribution automation, yana iya yi aiki na opening da reclosing operations a cikin AC lines daidai da sequence da aka rarraba, kuma kafin yana samu reset automatically ko kuma lock out. Yana da control da protection functionality (ba a tabbatar da zama mai ban sha'awa). Ta hanyar da aka fito a Najeriya, ana yi amfani da shi a matsayin mafi so a cikin urban distribution networks da kuma rural substations saboda muhimmancin abubuwan da ke da shi.

10kV outdoor auto circuit vacuum recloser yana da duwatsu: main recloser body da controller unit. Daga fahimtarnin tashin kontrol power, controller yana da uku na iya:

• Amfani da AC 220V direct as operating and closing power for the controller;

• Gawar AC 220V zuwa regulated DC 220V for operating and closing power;

• Powering the controller with an internal lithium battery.

Main recloser body yana da bushing-type current transformers (CTs) don in ba da line current. Abubuwan da aka ci gaba suka fi sani da kuka bayyana zuwa controller. Idan fault current an samun shahara da kuma time delay, recloser yana yi aiki na opening da reclosing operations daidai da sequence da aka rarraba. Idan transient fault yana faru a cikin system, automatic reclosing function yana bota kasa automatic.

Idan fault yana daidai, recloser yana yi aiki daidai da sequence da aka rarraba. Kafin samun number of reclosing attempts (typically three), yana shahara fault as permanent. Sectionalizer yana kusa faulty branch, kuma yana bota kasa zuwa sections da ba su fault. Ana bukatar ilimi mai yawa don in ba da fault da kuma reset recloser’s lockout status don in yake aiki daidai. Idan a yi amfani da sectionalizers da sectional circuit breakers, recloser yana taimakawa wajen clear transient faults da kuma isolate permanent fault locations, kuma kusan kasa da area da su fault.

2. Harkokin Daular 10kV Outdoor Auto Circuit Vacuum Recloser Controller

Don in ba da yanayi, muka yi harkokin da ake fito da ita da kake cire controller unit daga 10kV outdoor auto circuit vacuum recloser kuma kake zama outdoor vacuum circuit breaker. Kafin substation yana amfani da integrated automation system, protection da monitoring functions ta recloser zai iya fito. Amma, current signals daga recloser body da trip/close circuits ta circuit breaker zai iya sanar da 10kV protection da monitoring unit ta integrated automation system. Harkokin da suka yi sun hada:

Disable the recloser’s protection and detection functions by disconnecting the controller’s power supply and output circuits at the terminal block.

Current signals daga recloser body suna fi sani da kuka bayyana zuwa 10kV protection da monitoring unit through the controller’s terminal block. Wiring daga terminal block zuwa original controller zai iya fito don in ba da parasitic circuits. Ko kuma, secondary side ta CTs a cikin recloser body zai iya sanar da 10kV protection da monitoring unit directly.

Control power for the 10kV integrated protection da monitoring unit typically DC 220V or 110V. Saboda uku na iya da original controller power configurations, harkokin da suka yi sun hada:

• Original configuration: AC 220V for both operation and closing power
  → Replace the trip/close coil with a DC 220V or 110V version. Idan mechanism yana amfani da spring-charging motor da ba a tabbatar da AC and DC, yana bukatar replacement.

• Original configuration: AC 220V converted to regulated DC 220V
  → Disconnect the power supply from the controller to the trip/close circuits and instead power them directly from the 10kV integrated protection and monitoring unit. Substation control power should be set to DC 220V.

• Original configuration: Controller powered by built-in lithium battery
  → In this case, the control circuit typically uses DC 36V or 12V, while the trip/close circuits use AC 220V. During modification, the trip/close coils must be replaced. The coil terminals should be connected in series with the circuit breaker’s auxiliary contacts and led directly to the terminal block. Any spring-charging motor not rated for both AC and DC must also be replaced.

Saboda structure ta controller yana da take, idan a dole ne trip/close coils da charging motors, products with dimensions identical to the originals should be preferred. Crucially, the new wiring must have no connection whatsoever to the original controller circuits to prevent parasitic loops.

3. Conclusion

A lokacin da a yi tashin kai tsaye na gida, za a faru maza da ake yi amfani da tashin da suka fito a cikin systems masu karatu. Amma, idan a yi solutions daidai, za a iya ba da yanayi a lokacin da a tabbatar da objectives ta project.

Lura: Yadda ake kawo da wannan ƙarfin gyara ta shafi hukuma na ƙasa (kamar, kafin 2010) ko kuma a lokacin da ake zama suka bincike abubuwa masu zamani. A yanzu a ƙasar tashar noma, ana yi amfani da abubuwan intalika ko kuma circuit breakers mai kyauwarsa daidai.