Comprehensive testing device for transformer performance, oil chromatography and micro water testing

TOM-6000type The online monitoring system for transformer oil chromatography is used for online analysis and fault diagnosis of dissolved gases in power transformer oil, and is suitable forvariousVoltage level electricityOilOil immersed high-voltage equipment such as transformers, electric arc furnace transformers, reactors, and transformers.

brief introduction

TOM-6000type The online monitoring system for transformer oil chromatography canachieveAutomatic quantitative cycle cleaning, oil inlet, oil and gas separation, sample analysis, data processing, real-time alarm; Quickly monitor the content and growth rate of dissolved fault gases in the oil of oil immersed high-voltage power equipment such as transformers online, and use a fault diagnosis expert system to early predict equipment fault hidden danger information, avoid equipment accidents, reduce significant losses, and improve the reliability of equipment operation. As a new generation product in the field of oil chromatography online monitoring, this system will achieve online remote monitoring for power transformersDGAAnalyzing and providing stable and reliable solutions is a powerful guarantee for the implementation of the power system state maintenance system.

TOM-6000typeThe system is created by combining our company's nearly 20 years of successful experience in the operation of automatic full degassing equipment for power chromatography, and summarizing the advantages and disadvantages of online oil chromatography monitoring at home and abroad. This system maintains the advantages of stability, reliability, accuracy, and other aspects that our company's products have always had:

♦Online detectionH₂、CO、CO₂、CH₄、C2H4、C2H2、C2H6、H20(optional)Concentration and growth rate;

♦Quantitative cleaning cycle sampling method, which truly reflects the dissolved gas state in transformer oil;

♦Oil and gas separation is safe, reliable, and non polluting，Users can choose whether to discharge or not to discharge transformer oil;

♦Using specialized composite chromatography columns to improve the separation of gas components;

♦Adopting imported specially designed detectors to improve the detection sensitivity of hydrocarbon gases;

♦High stability and high-precision gas detection technology, with an error range of± 10%；

♦Mature and reliable communication methods, using standard network protocols, supporting remote data transmission;

♦High reliability of data collection, using oversampling technologyΔ－∑Analog to digital converter,24Bit resolution, automatic calibration;

♦Diverse data display and query methods, providing reports and trend charts, with a historical data storage lifespan of10Year;

♦Strong adaptability to the environment, successfully applied in high-altitude, high temperature, high humidity, and high-altitude areas;

♦High anti-interference performance and electromagnetic compatibility meet the requirementsGB/T17626giveIEC61000Standard;

♦Provide two-level alarm function, and the alarm signal can be transmitted remotely;

♦Open database that can be connected to the local area network of the power system;

In addition,TOM-6000typeThe system adopts a modular design, and the application of high-performance embedded processors makes the chromatography online monitoring system more stable and reliable, and has the following characteristics:

♦Faster analysis cycle, * small monitoring cycle is40-60Minutes, can be set by users themselves, recommendeddetection perioddo24Check once per hour；

♦Fast oil and gas separation speed, only requires10minuteMulti-clockLeft and right, using special environmental adaptation techniques to eliminate the impact of temperature and humidity changes on gas distribution coefficients;

♦The analyzed oil sample is treated with degassing and buffering techniques to eliminate bubbles in the oil sample injected back into the transformer body. The multi-layer isolated oil injection (return oil) technology ensures that the carrier gas will not be carried into the transformer body;

♦ C2H2*The detection limit can reach0.1-0.5μ L/L；

♦Adopting dual loop multi-mode constant temperature control, the temperature control accuracy reaches± 0.1 ℃The equipment is equipped with automatic constant temperature industrial air conditioning;

♦Adopting an embedded processor control system, it integrates multiple functions such as oil and gas separation, data acquisition, chromatographic analysis, concentration calculation, data alarm, and equipment status monitoring, without data loss, greatly improving the reliability and stability of the system;

♦The functional interface circuit adopts optocoupler isolation design to further improve the anti-interference performance of the system;

♦useEthernet modeIt can achieve full digital, remote data transmission, control, and parameter setting;

♦Strengthen the system fault diagnosis function, provide improved three ratio method, David's triangle method, and cube diagram method, and provide diagnostic results;

♦Strengthen system self inspection, add remote maintenance function, and provide equipment abnormal event alarm;

♦support61850communicationProtocol, providing networking function for similar monitoring devices, which can achieve centralized remote diagnosis in a certain area;

♦system structureuse19”Standard chassis and highly integrated modular design, structureCompact, easy to install and maintain, user-friendly operation;

♦High scalability and easy integration with other monitoring devices;

♦No steel cylinder design, no need to replace the carrier gas every year, greatly reducing the amount of after-sales maintenance, and there is no high-voltage container next to the transformer, ensuring the safety of the equipment and no safety hazards.

Technical Parameter

Special gas chromatograph for the content of dissolved gas components in insulating oil

OneOverview: The determination of dissolved gas content in insulating oil by gas chromatography is an effective means for power generation and supply enterprises to determine whether there are latent overheating, discharge and other faults in oil filled power equipment during operation, in order to ensure the safe and effective operation of the power grid. It is also a necessary means for oil filled electrical equipment manufacturers to conduct factory inspections of their equipment.
The transformer oil chromatography analysis system adopts a one-time injection and one-time detection method7 components, equipped with TCD detector and one FID detector, with H2 and O2 detected by TCD; Hydrocarbon gases (CO, CH)4、CO、C2H4、C2H2、C2H6）ByFID detection, based on the peak area and retention time of each component recorded, analyzes the data using a dedicated chromatographic workstation and calculates the percentage content of each component using oscillation method.

IITesting indicators:

CO、CH4、CO、C2H4、C2H2、C2H6、H2

III instrumentPreparation:

1. Gas chromatograph: equipped with thermal conductivity detector TCD and hydrogen flame detector FID

2. Chromatographic Column: Specialized Chromatographic Column

3. Standard: Standard gas

4. Dual channel chromatography workstation: Two detectors collect and stop simultaneously, and the spectra are automatically merged into one chromatogram.

5. Gas generator: provides hydrogen, air, and nitrogen gas cylinders

4Experimental conditions:

1. Column temperature: 65 ℃,

2. Carrier gas: nitrogen; The pressure in front of the column is 1.2Mpa;

3. Vaporization temperature: 150 ℃, TCD detector temperature: 80 ℃, converter temperature: 320 ℃

5、 Graph

VIReference basis:

GB/T 17623-1998 "Determination of dissolved gas components in insulating oil by gas chromatography"
GB/T 7252-2001 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil"
DL/T 722-2000 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil"

7、 Instrument configuration:

Update time: September 4, 2020 16:48:57