A Generator var statis (SVG) is an advanced power quality device designed to provide real-time reactive power compensation and improve power factor. Tidak seperti bank kapasitor tradisional, SVG offers dynamic, stepless adjustment, ensuring stable voltage and efficient power distribution. It is widely used in industrial facilities, renewable energy systems, pusat data, and commercial buildings where power quality and stability are critical. Below are some frequently asked questions to help you understand SVG technology better.
Q1: Apa itu generator var statis (SVG)?
Generator var statis (SVG) adalah perangkat kualitas daya untuk kompensasi daya reaktif dinamis. Ini membantu menstabilkan tingkat tegangan dan meningkatkan faktor daya dengan menyuntikkan atau menyerap daya reaktif sesuai kebutuhan. Tidak seperti bank kapasitor tradisional, SVG memberikan kompensasi waktu nyata dan bekerja secara efektif dalam berbagai kondisi beban.
Q2: Bagaimana Anda memilih generator var statis?
Saat memilih SVG, Pertimbangkan faktor -faktor berikut:
-Permintaan daya reaktif: Tentukan peringkat KVAR yang diperlukan berdasarkan kebutuhan daya reaktif sistem daya.
-Jenis beban: Cocok untuk industri dengan permintaan daya reaktif yang berfluktuasi, seperti pengelasan, pusat data, dan tanaman baja.
-Waktu respons: Cari waktu respons yang cepat (khas <5MS) untuk menangani beban dinamis.
-Tegangan dan kapasitas sistem: Pastikan kompatibilitas dengan infrastruktur listrik yang ada.
-Lingkungan pemasangan: Pertimbangkan instalasi indoor atau outdoor dan faktor lingkungan seperti suhu dan kelembaban.
Q3: Apa perbedaan antara generator var statis dan bank kapasitor?
SVG: Menggunakan elektronik daya canggih (Teknologi berbasis IGBT) untuk kompensasi daya reaktif real-time, memberikan kontinu, kontrol tanpa langkah.
Bank kapasitor: Menggunakan kapasitor tetap atau beralih untuk mengkompensasi daya reaktif dalam langkah -langkah diskrit, yang dapat menyebabkan kompensasi berlebih atau kurang kompensasi.
Q4: Apa perbedaan antara SVG (Generator var statis) dan AHF (Filter harmonik aktif)?
| Fitur | SVG (Generator var statis) | Ahf (Filter harmonik aktif) |
| Fungsi utama | Kompensasi Daya Reaktif (Koreksi faktor daya) | Kompensasi Harmonik & Koreksi faktor daya |
| Manfaat utama | Stabilitas tegangan, faktor daya yang ditingkatkan | Pengurangan Distorsi Harmonik |
| Terbaik untuk | Koreksi faktor daya & Stabilitas tegangan | Lingkungan yang kaya harmonik (VFDS, UPS, beban nonlinier) |
| Teknologi | Kompensasi real-time berbasis IGBT | Penyaringan harmonik real-time berbasis IGBT |
| Kecepatan respons | <5MS | <1MS |
| Efek pada harmonik | Tidak menghilangkan harmonik | Secara aktif membatalkan harmonik |
SVG sangat ideal untuk stabilitas tegangan dan kontrol daya reaktif.
AHF lebih baik untuk lingkungan yang kaya harmonik dan peningkatan kualitas daya.
Untuk solusi kualitas daya lengkap, SVG dan AHF dapat digunakan bersama dalam sistem listrik yang kompleks.
Q5: Apakah SVG cocok untuk semua jenis beban?
SVG sangat ideal untuk beban dinamis yang membutuhkan kompensasi daya reaktif dan koreksi faktor daya, termasuk:
Peralatan pengelasan (mesin pengelasan busur, mesin pengelasan resistensi)
Lift, crane (beban yang berubah dengan cepat)
Sistem Energi Terbarukan (tenaga angin, PV surya)
Aplikasi Industri (baja, kimia, Industri semen)
Pusat data, rumah sakit, bandara (Persyaratan Kualitas Daya Tinggi)
Namun, SVG memiliki efek terbatas pada beban resistif murni (MISALNYA., pemanas listrik).
Q6: Akankah SVG Konflik dengan AHF (Filter harmonik aktif)?
TIDAK, SVG dan AHF dapat bekerja sama untuk meningkatkan kualitas daya secara keseluruhan:
SVG berfokus pada kompensasi daya reaktif dan peningkatan faktor daya.
AHF menghilangkan harmonik dan mengurangi distorsi harmonik total (Thd).
Menggunakan keduanya dalam kombinasi sangat ideal untuk lingkungan dengan beban nonlinier seperti VFDS, UPS, dan tungku busur listrik.
Q7: What is the difference between STATCOM and Static Var Generator?
Statcom (Static Synchronous Compensator) and SVG operate on similar principles, both using IGBT-based technology for fast and precise reactive power compensation.
Key difference: STATCOMs are used in high-voltage transmission systems, while SVGs are more common in low- to medium-voltage industrial and commercial applications.
Q8: How fast is the response time of SVG?
Modern SVGs use IGBT (Transistor bipolar gerbang terisolasi) teknologi, with response times of ≤5ms, much faster than traditional thyristor-switched capacitor (Tsc) or Static Var Compensator (SVC) systems, making them suitable for rapidly changing reactive power demands.
Q9: What is the difference between SVG and TSC (Thyristor-Switched Capacitor)?
| Fitur | SVG (Generator var statis) | Tsc (Thyristor-Switched Capacitor) |
| Control Method | IGBT electronic control, real-time dynamic adjustment | Thyristor switching, step-based compensation |
| Compensation Accuracy | Continuous, high precision (stepless adjustment) | Discrete capacitor steps, lower precision |
| Response Time | ≤5ms (very fast) | 10ms-1s (slower) |
| Harmonic Effects | Does not generate harmonics, can help mitigate them | May cause resonance with system harmonics |
| Terbaik untuk | Dynamic loads (welders, lift, dll.) | Stable loads with moderate changes |
| Lifespan & Pemeliharaan | Electronic components, long lifespan, low maintenance | Mechanical switching wears out faster, rand equires more maintenance |
SVG is recommended for rapidly changing loads, while TSC is better for more stable load conditions. They can also be used together for optimal performance.
Q10: Can SVG be used in renewable energy systems (solar/wind)?
Ya, SVG is widely used in wind power, PV surya, and energy storage systems, providing benefits such as:
Reactive power compensation to improve power factor, ensuring compliance with grid standards (MISALNYA., IEEE-519).
Balancing three-phase currents, reducing grid instability.
Minimizing voltage fluctuations and flicker, particularly in wind and solar systems with variable power output.
Q11: Does SVG help with energy savings?
SVG does not directly save energy, but it can reduce power losses, leading to indirect cost savings by:
Improving power factor, avoiding penalties for reactive power usage.
Reducing line losses, and decreasing the load on transformers, kabel, and switchgear.
Stabilizing voltage, enhancing equipment efficiency and lifespan.
Q12: How to determine the required capacity of an SVG?
The required SVG capacity (kiri) depends on the reactive power demand of the system. General guidelines:
Measure the system’s reactive power requirement (kiri).
Select an SVG with a rating slightly higher than the peak reactive demand to prevent under-compensation.
In complex load environments, distributed compensation (multiple SVG units) may be more effective.
Q13: Can multiple SVGs be connected in parallel?
Ya, SVGs support modular parallel operation, allowing for flexible expansion as power demands grow. Example applications:
Scaling up capacity by adding more SVG units.
Distributed installation in different electrical branches to optimize compensation efficiency.
Q14: Where should SVG be installed?
SVG should be installed as close to the load as possible to maximize compensation efficiency. Typical installation locations:
At substations or distribution panels (centralized compensation).
Near production areas or load centers (decentralized compensation).
Close to specific equipment (seperti VFD, lift, welding machines).
Q15: What is the lifespan and maintenance requirement of SVG?
SVGs primarily use electronic components, with an expected lifespan of 15-20 bertahun-tahun, significantly longer than traditional capacitor banks.
Maintenance includes periodic cooling system checks, dust cleaning, and monitoring operational status, but overall maintenance is minimal.
Q16: What is the return on investment (ROI) for SVG?
SVGs help reduce power losses, improve power factor, and avoid penalties, leading to an ROI of 1-3 bertahun-tahun, depending on:
Electricity tariffs and power factor penalty policies.
Cost savings from reduced reactive power charges.
Lower maintenance and extended equipment lifespan.
Q17: In which industries is SVG most beneficial?
SVG is ideal for industries with dynamic loads, fluctuating power factors, or high reactive power demand, seperti:
✅ VFDs, large motors, pusat data, baja, chemical plants
✅ Welders, lift, crane, port equipment
✅ Solar PV, tenaga angin, energy storage systems
SVG can be used alone or combined with AHF, Tsc, or SVC to provide a comprehensive power quality solution.
Tag: kompensasi daya reaktif dinamis, power quality device, Generator var statis svg, Bank kapasitor.
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