QPSSE3000 Transformer Oil Chromatography Online MonitoringIntroduction: The QPSSE3000 transformer oil chromatography online monitoring system can achieve automatic quantitative cycle cleaning, oil inlet, oil and gas separation, sample analysis, data processing, and 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 provide a stable and reliable solution for online remote DGA analysis of power transformers, and is a powerful guarantee for the implementation of power system status maintenance system.
Dual functional characteristics:
Online detection of concentrations and growth rates of H2, CO, CO2, CH4, C2H4, C2H2, C2H6, and O2;
The oil and gas separation speed is fast, taking only about 10 minutes. Special environmental adaptation technology is used to eliminate the influence of temperature and humidity changes on the gas distribution coefficient;
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;
The low detection limit of C2H2zui can reach 0.1 μ L/L;
Adopting dual loop multi-mode constant temperature control, the temperature control accuracy reaches ± 0.1 ℃, and 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, equipment status monitoring, etc., 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;
Adopting the RS-485 bus standard, it 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;
Support TCP/IP network protocol, provide networking function for similar monitoring devices, and enable centralized remote diagnosis of a certain area;
Compact system structure, easy installation and maintenance, user-friendly operation;
The system consists of an on-site monitoring unit (chromatographic data acquisition device QPSSE3000-01), a main control room unit (data processing server QPSSE3000-02), and monitoring software (monitoring and warning software QPSSE3000-V.03).
Three working principles:
When the QPSSE3000 transformer oil color spectrum online monitoring system is working, the oil sample collection unit is first used to circulate the oil circuit, process the dead oil in the connecting pipeline, and then perform oil sample quantification; The oil and gas separation unit quickly separates dissolved gases in the oil and delivers them to the quantitative tube of the six way valve for automatic injection; Under the propulsion of the carrier gas, the sample gas is separated by the chromatographic column and sequentially enters the gas detector; The data acquisition unit completes the conversion and acquisition of AD data, and the embedded processing unit stores, calculates, and analyzes the collected data. The data is uploaded to the data processing server (installed in the main control room) through RS485/100M Ethernet interface, and then processed and analyzed by QPSSE3000-03 monitoring and warning software.
Four product advantages:
1. Unique suspended heating method ensures smooth baseline operation without drifting;
2. Dynamic headspace degassing method, with rapid oil and gas separation and sufficient degassing, completes the entire detection process in 35 minutes;
3. The unique anti-corrosion and waterproof processes on the surface of the shell improve its anti-corrosion and sealing performance;
4. Rigorous airtight connection ensures long-term operation of the product without air or oil leakage;
5. Powerful self diagnosis upper computer software with built-in debugging function module;
6. Powerful 32-bit processor, faster data processing speed; The over limit alarm value for transformer chromatographic data can be set, and once the system determines that the equipment status parameters exceed the standard, the system can automatically trigger an alarm;
7. Self made carrier gas to create maintenance free products.
8. Add heat tracing tape to the inlet and return pipes to ensure normal operation at -45 ℃.
5、 Technical indicators

Technical indicators of multi-component online monitoring device