Ga wasu muhimman ayyuka da ake amfani da shi wajen GIS voltage transformers a cikin digital substations?

Na'am da duniya, ina Echo, kuma ina yi aiki da tashin hanyar tsari (VTs) na 12 shekwa.

Daga fahimtar yadda ake gaji da kasa da ake buɗe mafi yawan alamomin cuta a kan mulkin abokan, zuwa yanzu ake shiga a duk fannoni na masana'antu mai girma — ina nuna yadda tattalin arziki ta zama daga cikin tattalin karamin ayyuka zuwa wadannan da suka samun digital. Yau da kullum, kowane lokaci ya ci gaba da ƙarin waɗanda suka haɗa su da tashin hanyar tsari mai girman elektronika (EVTs), wadanda suke saurari tashin hanyar tsari mai karfi da suka fi sani.

Kwari, daya daga abokai ina bincike:

“Echo, suka ce masana'antar digital suna cikin al'adu — ma zan iya bayar da mu, yadda tashin hanyar tsari mai girman elektronika (EVTs) ke ƙare? Wannan ba da shirin da ake amfani da su ba?”

Maimakon tambayar! Saboda haka, na biyu ina son tabbatar da:

Wannan faɗa da tashin hanyar tsari mai girman elektronika (EVTs) ke ƙare a 220 kV GIS da masana'antar digital — da kuma abubuwan da muke so kuɗi a cikin ayyukan da ake amfani da su?

Babu kalmar jargon — kawai magana daidai a kan tafarkin 12 shekarar da ina yi aiki a kan wannan tattalin arziki. Za a gano!

1. Me Tashin Hanyar Tsari Mai Girman Elektronika Ne?

Akwai, Tashin Hanyar Tsari Mai Girman Elektronika (EVT) shine babban wurin da ake amfani da shi a kan tashin hanyar tsari mai girman elektronika don tara alamomin cuta mai girma.

Ya kunshi tashin hanyar tsari mai karfi, wanda ke amfani da cores da windings don tara alamomin cuta, EVT ke amfani da resistive ko capacitive voltage dividers, ko kuma principles mai girman optical, don tara alamomin cuta. Sannan, electronics na gargajiya ke convert analog signal zuwa digital output.

2. Me Masana'antar Digital Suna Da Mu?
2.1 It Speaks “Digital” Natively — Perfect for Smart Systems

Tashin hanyar tsari mai karfi suna ƙarɓa analog signals, wanda ke buƙata don zama digital kabisa ake amfani da su a kan protection relays ko monitoring systems. Amma EVT ke ƙarɓa digital data directly, wanda ke haɗa ƙarfin conversion. Wannan ke jagoranci accuracy da kuma speed na ƙarɓar data.

Koyar da kake fara da landline phone zuwa video call app — clearer, faster, and easier to manage.

2.2 No Saturation, No Fear of Harmonics

Tashin hanyar tsari mai karfi suke fito da magnetic saturation a lokacin faults ko harmonic-rich conditions, wanda ke jawo errors ko kuma false trips. Amma saboda EVT ba na iron core, ba su fito da saturation — wanda ke taimaka wajen environments mai harmonics ko fault currents.

2.3 Compact Design — Perfect Fit for GIS

GIS systems suna son space. Saboda EVT ba na bulky cores da windings, su ne much smaller and lighter than traditional VTs. Wannan ke taimaka wajen tight GIS installations.

3. Real-World Use in 220 kV GIS Systems

A wasu shekaru, kamfanin ina yi aiki a kan 220 kV digital substation projects, kuma kowane muka amfani da electronic voltage transformers. Paired with merging units (MUs) and intelligent terminals, the system performance has been pretty solid.

Here’s one example: We once worked on a city substation where space was extremely limited, but high-precision metering and fast protection response were required. We chose a capacitive EVT with a fiber-optic interface. Not only did it save space, but it also achieved millisecond-level data response, and the protection actions were super responsive.

4. Things to Watch Out for in Real Applications

Even though EVTs have many advantages, there are still some points to keep in mind during actual use:

4.1 Sensitive to Power Supply and Temperature

Since EVTs contain electronic components, they’re sensitive to temperature changes and power stability. In areas with extreme temperature swings or high humidity, it's better to choose models with heating and dehumidification functions.

4.2 Merging Unit (MU) Reliability Matters

EVTs usually work together with merging units. If the MU fails, the whole system goes down. That’s why in most of our projects, we use dual-redundant MUs to ensure system reliability.

4.3 Calibration Needs Special Tools

Traditional error testers may not work well with EVTs because they output digital signals. You’ll need specialized digital calibration tools, such as digital standard sources or network analyzers.

5. Final Thoughts

As someone who’s spent over a decade in this field, here’s my take:

“Electronic voltage transformers aren’t some futuristic tech — they’re already here, and they’re getting more mature every day.”

Especially in the context of digital substations and smart grids, their advantages are clear. As long as you select the right model, install it properly, and maintain it regularly, EVTs can definitely handle measurement and protection tasks in 220 kV GIS systems.

If you're working on digital substation projects or just curious about electronic voltage transformers, feel free to reach out. I’d love to share more hands-on experience and practical tips.

Here’s hoping every electronic voltage transformer runs smoothly and safely, helping build smarter, more efficient substations!

— Echo