Sensor suhu serat optik INNO ,sistem pemantauan suhu.
Perangkat pemantauan online transformator sangat penting untuk pelacakan status pengoperasian transformator secara real-time, memungkinkan deteksi dini potensi kesalahan dan memastikan pengoperasian yang andal. Berikut adalah tipe utamanya:
Alat Pemantau Kualitas Minyak
- Analisis Gas Terlarut (DGA) Sistem: Pantau terus gas yang terlarut dalam minyak transformator (seperti metana, etana, etilen, asetilen). Konsentrasi atau rasio gas yang tidak normal menunjukkan degradasi insulasi (misalnya, pelepasan sebagian atau panas berlebih), membantu memprediksi kesalahan seperti busur api atau kerusakan termal.
- Sensor Kelembapan dalam Minyak: Ukur kadar air dalam minyak. Kelembaban yang berlebihan mengurangi kekuatan insulasi, increasing the risk of flashover. Data real-time membantu menjaga kekeringan minyak melalui sistem dehidrasi.
- Pemantau Suhu dan Ketinggian Minyak: Lacak suhu oli (penting untuk manajemen beban) and oil level (untuk mendeteksi kebocoran). Kenaikan suhu yang tiba-tiba atau penurunan level memicu alarm.
Perangkat Pemantau Isolasi
- Pelepasan Sebagian (PD) Monitors: Detect partial discharges in insulation (misalnya, in windings or bushings) using sensors (ultrasonik, electromagnetic, or UHF). PD activity accelerates insulation aging, and early detection prevents catastrophic failures.
- Insulation Resistance Monitors: Measure the insulation resistance of windings, busing, dan inti. A gradual decrease indicates insulation deterioration, allowing timely maintenance.
Winding and Core Monitoring Devices
- Sensor Suhu Serat Optik Fluoresen: As discussed earlier, these directly measure winding hot spot temperatures with high precision, unaffected by electromagnetic interference. Critical for preventing insulation overheating.
- Core Ground Current Monitors: Monitor current in the core’s grounding wire. Abnormal currents (above a few mA) indicate core insulation issues (misalnya, multiple ground points), which can cause local overheating.
Bushing and Tap Changer Monitoring Devices
- Bushing Monitoring Systems: Measure bushing capacitance, tanδ (kerugian dielektrik), dan suhu. Changes in these parameters signal insulation degradation, reducing the risk of bushing failures.
- Pengubah Ketuk Saat Dimuat (OLTC) Monitors: Track OLTC operation (misalnya, keausan kontak, kualitas minyak, and mechanical status) via vibration analysis, current/power monitoring, and oil DGA. Ensures smooth voltage regulation and extends OLTC life.
Gas and Pressure Monitoring Devices
- Relai Gas (Relai Buchholz): A traditional but essential device. It detects gas accumulation or oil flow caused by internal faults (misalnya, sirkuit pendek), triggering alarms or tripping the transformer to prevent damage.
- Tank Pressure Monitors: Monitor the pressure inside the transformer tank. Sudden pressure spikes indicate severe internal faults (misalnya, pencetusan), enabling rapid shutdown.
External Environment Monitoring Devices
- Ambient Temperature and Humidity Sensors: Track the environment around the transformer. High humidity combined with dust can lead to surface insulation issues, while extreme temperatures affect cooling efficiency.
- Security and Vibration Sensors: Detect unauthorized access, perusakan, or abnormal vibrations (indicating loose components or structural issues), enhancing overall transformer safety.
Communication and Integration Systems
Most online monitoring devices connect to a central SCADA (Pengendalian Pengawasan dan Akuisisi Data) system or a dedicated transformer monitoring platform. Data is analyzed in real-time, with trends tracked to predict maintenance needs, enabling condition-based rather than scheduled maintenance.
These devices work together to provide a comprehensive view of a transformer’s health, minimizing downtime and maximizing operational efficiency.
Sensor suhu serat optik, Sistem pemantauan cerdas, Produsen serat optik terdistribusi di Cina
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