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OM.T300 Transformer Oil Dissolved Gas Online Monitoring System

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Intelligent Transformer Monitoring Product Series

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021-51698460

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产品描述

Commodity name: OM.T300 Transformer Oil Dissolved Gas Online Monitoring System

Product Overview
The OM.T300 On-line Dissolved Gas Monitoring System for Oil automatically performs quantitative circulating cleaning, oil sampling, gas-oil separation, sample analysis, data processing, and real-time alarm functions. It rapidly monitors the concentration and growth rate of dissolved fault gases in oil used in oil-immersed high-voltage equipment such as transformers, and leverages a fault diagnosis expert system to provide early warnings of potential equipment failures. This proactive approach helps prevent equipment accidents, minimizes critical losses, and enhances the overall reliability of operational systems.

System Architecture
The OM.T300 On-line Dissolved Gas Monitoring System consists of a Field Monitoring Unit (OM.T300 On-line Dissolved Gas Monitoring Device) and a Control Room Unit (OM.A300 Integrated Monitoring System). The Field Monitoring Unit, which serves as the chromatographic data acquisition system, comprises a carrier gas unit, a degassing unit, a detection unit, a master control unit (IED), and auxiliary units. These auxiliary units include oil valves connected to the transformer, oil pipes, and communication cables, among other components.

Advantageous Features
● The oil-gas separation system is safe and reliable, ensuring no contamination or emissions—plus, users can choose whether or not to discharge transformer oil.
● Utilizing a dedicated composite chromatographic column to enhance the separation efficiency of gas components
● Employs an imported thermal conductivity detector to enhance the detection sensitivity of hydrocarbon gases.
● High data acquisition reliability, featuring oversampling technology with a Δ-Σ analog-to-digital converter, 24-bit resolution, and automatic calibration.
● Offers a two-level alarm function, with alarm signals capable of remote transmission.
● Strong environmental adaptability, successfully applied in high-altitude, cold, high-temperature, and high-humidity regions
● Faster analysis cycles, with a minimum monitoring interval of 60 minutes; users can customize the working intervals.
● The oil input is only 25 mL, significantly better than the industry standard of 600 mL, ensuring rapid oil-gas separation in just 30 minutes. It incorporates a special environmental adaptation technology that eliminates the impact of temperature and humidity fluctuations on the gas distribution coefficient.
● The analyzed oil samples undergo degassing and buffering techniques to eliminate bubbles entrained in the oil being returned to the transformer body. Additionally, a multi-layered isolation-type re-injection (return oil) technology is employed to absolutely ensure that no gases are introduced into the transformer body.
●The detection limit for C₂H₂ can reach as low as 0.2 μL/L
● The equipment is equipped with an automatic constant-temperature industrial air conditioner to ensure a stable internal chassis temperature.
● Enhance the system fault diagnosis function by providing the improved three-ratio method, David’s triangle method, and cubic diagram method, and presenting the diagnostic results.
● Strengthen system self-check, enhance remote maintenance capabilities, and provide alerts for equipment abnormality events.

System Parameters

Serial Number	Technical Parameter Name	Provide value
1	Working environment temperature	-20℃ to +70℃
2	Workplace humidity	Relative humidity: 5–95% (no condensation should occur inside the device, nor should ice form.)
3	Working Power	AC 220V ±10%, 50Hz
4	Analysis and Diagnostic Function	By improving the three-ratio method, the David triangle method, and the cubic diagram approach The law analyzes and diagnoses monitoring data, and provides the original spectrum diagrams.
5	Minimum Detection Cycle	60 minutes, customizable by the user; default is 24 hours.
6	Oil-gas separation method	Headspace degassing method
1	Equipped with payload capacity	High-Purity Air Generator
8	Repeatability (measurement bias)	Under the same test conditions, the deviation in monitoring results for the same oil sample does not exceed 5% (for medium concentrations of total hydrocarbons ≥50 μL/L).
9	The protective performance of the casing	Indoor-installed components (master station unit) are rated IP51, while outdoor-installed components (this system and the communication control unit) are rated IP56.
10	External dimensions	Width 600mm × Depth 600mm × Height 1200mm
11	Entire machine weight	150kg

Serial Number	Technical Parameter Name	Provide value
12	Gas monitoring	Measurement Range	Minimum Detection
1)	H₂	2–1000 μL/L	2 μL/L
2)	CO	25–1,500 μL/L	25 μL/L
3)	CO₂	25–7,500 μL/L	25 μL/L
4)	CH₄	0.5~150 μL/L	0.5 μL/L
5)	C₂H₄	0.5~150 μL/L	0.5 μL/L
6)	C₂H₆	0.5~150 μL/L	0.5 μL/L
7)	C₂H₂	0.2~50 μL/L	0.2 μL/L
8)	Micro water (optional)	1–300 μL/L
9)	0 ₂ (Optional)	30–5,000 μL/L
10)	Total Hydrocarbons	1–500 μL/L
Meet the A1 accuracy requirements of China Academy of Electrical Sciences

On-site Case


State Grid Jiangxi Jidong 500kV Transmission and Transformation Project		State Grid Lhasa ±400kV Converter Station

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