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Integrated test system part

NR8500 Series Transformer Oil Chromatography Online Monitoring System

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NR8500 Series Transformer Oil Chromatography Online Monitoring System

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Product description

System introduction:

　　Can be installed under the operating state of the main transformer, reducing the fluctuation of the power grid caused by the installation of the online monitoring system, and reducing the installation workload. The installation of the system and the transformer body is very simple. All that is needed is the oil inlet and outlet pipes, and the oil inlet and outlet are connected by flanges and the reserved holes of the transformer.

　　Transformer oil chromatographic online monitoring system can realize automatic quantitative cycle cleaning, oil intake, oil and gas separation, sample analysis, data processing, real-time alarm; fast online monitoring of the content of dissolved fault gases in the oil of transformers and other oil-immersed power high-voltage equipment Increase the growth rate, and use the fault diagnosis expert system to early predict the hidden danger information of equipment failures, avoid equipment accidents, reduce major losses, and improve the reliability of equipment operation. As a new generation product in the field of oil chromatographic online monitoring, this system will provide a stable and reliable solution for online remote DGA analysis of power transformers, and is a strong guarantee for the implementation of the power system state maintenance system.

　　The transformer oil chromatographic online monitoring system is composed of an oil and gas separation unit, a gas detection unit, a data acquisition and control data processing unit, and an auxiliary unit. The system can detect H2, CO, CH4, C2H6, C2H2 dissolved in the transformer oil online according to a determined cycle , C2H4, CO2 and other full-component gases and micro water content.

Main Feature

　　◆ Oil and gas separation technology: dynamic negative pressure headspace degassing, fast oil and gas separation, sufficient degassing, and intrinsically safe;

　　◆ Detector: The world's leading sensor technology, nanocrystalline semiconductor gas sensor, high sensitivity, fast response, and ensure stable and accurate data;

　　◆ Heating method: unique heating method to ensure that the baseline is fast and stable without drifting;

　　◆ Carrier gas: self-made carrier gas to create maintenance-free products;

　　◆ Signal processing: Intelligent spectrum peak identification technology to ensure reliable identification of trace gas components such as acetylene;

　　◆ Baseline processing: Wavelet baseline automatic tracking technology to ensure accurate quantification;

　　◆ Environmental adaptability: Dual constant temperature control technology can meet outdoor environment conditions to ensure data stability;

　　◆ Communication protocol: RS-485, IEC61850 standard protocols are optional;

　　◆ Appearance: The unique anti-corrosion and all-round waterproof technology of the shell surface improves the anti-corrosion and sealing performance of the shell;

　　◆ Air-tightness: rigorous air-tight connection to ensure that the product does not leak air or oil during long-term operation;

　　◆ The oil inlet and return pipes are attached with heating cables to ensure normal operation at minus 45°C. The oil inlet is equipped with an oil filter device to ensure long-term trouble-free operation of the equipment;

　　◆ The equipment is equipped with industrial air conditioners and can work normally at -45oC-70oC;

　　◆ The client software V2.0.3 of the transformer oil chromatography online monitoring system, taking into account the application characteristics of multi-user and remote online monitoring, adopts an object-oriented design method. Through this software, you can monitor system data, browse historical data and spectrogram data in real time, and modify system parameters when authorized.

Technical Parameters

　　◆ Basic parameters of equipment

Classification	Parameter	Device
Power characteristics	communicate with：V	220
	frequency：Hz	50±1
Environmental parameters	Device
Operating temperature	-45～70oC
Working environment humidity	5-95%No condensation
Earthquake resistance	Level 8
Analysis cycle	Complete the whole monitoring process once in 50 minutes, and can continuously monitor
Carrier gas	High purity air
Electrical Safety	Dielectric strength：V	100,500,1000,1500（1min）
	Insulation resistance：MΩ	The external terminal of the AC circuit is to the ground ≥ 10; the ungrounded DC circuit (excluding the sensor) is to the ground ≥ 1

◆ System monitoring parameters

Serial number	gas	Minimum monitoring gas concentration	Monitoring range	Monitoring accuracy	Repeatability of the same oil sample
1	H2	1uL/L	1-5000uL/L	±10% 2uL/L whichever is greater	Less than±5％
2	CO	1uL/L	1-5000uL/L	±10％	Less than±5％
3	CH4	0.5uL/L	0.5-4000uL/L	±10% 2uL/L whichever is greater	Less than±5％
4	C2H6	0.5uL/L	0.5-3000uL/L	±10% 2uL/L whichever is greater	Less than±5％
5	C2H4	0.5uL/L	0.5-4000uL/L	±10% 2uL/L whichever is greater	Less than±5％
6	C2H2	0.1uL/L	0.1-2000uL/L	±10% 2uL/L whichever is greater	Less than±5％
7	CO2	10uL/L	10-5000uL/L	±10% 2uL/L whichever is greater	Less than±5％
8	Micro water (optional)	1uL/L	1-100uL/L	±10% 2uL/L whichever is greater	Less than±5％
9	Water activity (optional)	0.01	0-1aw	±0.02	Less than±5％
10	Oil temperature (optional)		－40～180℃	±0.01℃	Less than±5％
11	Total hydrocarbon (optional)	0.1uL/L	0.1-8000uL/L	±5% 2uL/L whichever is greater	Less than±5％