Transformer Oil on-Line Dissolved Gas Analysis (DGA) Monitoring Test System

• Customization: Available
• After-sales Service: Life Long Support
• Warranty: 1 Year
• Model NO.: HM9100
• Baseline Noise: ≤2 *10-13A
• Linear: >106
• Sensitivity: >5000mv Ml / Mg
• Baseline Drift: ≤100μV / 30min
• Product Name: Transformer Oil Dissolved Gas Analyzer
• Transport Package: Wooden Box with Foam Inside
• Trademark: HMDQ
• Origin: Hubei, China(Mainland)
• Production Capacity: 100sets Per Year

Product Description

Transformer Oil on-Line Dissolved Gas Analysis (DGA) Monitoring System for power transformer substation 


I. System overview

Exact understanding of the running status of the transformer is the key to maintain the safe operation of the power system.
If local overheating or partial discharge is present in the transformer, the insulating oil or solid insulator in the trouble location will release small molecules hydrocarbon gases such as CH4, C2H6, C2H4, C2H2 and other gases such as H2, CO, CO2. Both of the concentration of every gas in insulating oil and the total concentration of inflammable gas in oil (TCG) can be used as indicators to diagnose the internal faults of the transformer.
Transformer Oil On-line Monitoring System is a new transformer oil chromatogram on-line monitoring product. Our company researches and develops the product by taking International Electrotechnical Commission (IEC) Standard and National Standard of Transformer Oil Monitoring of China Electric Power Industry (GB) as test research and development basis strictly, introducing advanced detection technology and high-precision detection components from abroad and absorbing the field operating experience of on-line chromatogram monitoring system for gas in transformer oil at home and abroad.
Transformer Oil On-line Monitoring System adopts oil gas degassing technology that combines vacuum and ultrasound, uses the international newest high efficiency compound chromatographic column and high-precision sensor to accurately analyze seven gases with fault features including hydrogen (H2), carbon monoxide (CO), methane (CH4), ethane C2H6), ethylene (C2H4), acetylene (C2H2) and carbon dioxide (CO2) and to assist in realizing on-line analysis of micro-water in oil.
Transformer fault information can be captured promptly by using Transformer Oil On-line Monitoring System to scientifically guide the operation and maintenance of the equipment.

II.System constitution:

Transformer Oil On-line Monitoring System is mainly composed of oil-gas separator, cold trap, carrier gas regulation and control system, air cleaning and drying system, temperature control system, fault-characteristics-gas-in-oil chromatography detection unit, fault diagnosis and data management software composed of industrial personal computer, communication network, and data remote control and access software.

III. Technical indexes of system:

Item	Content
Detection principle	Detect H2, CO, CH4, C2H6, C2H2, C2H4 or CO2, O2, where micro-water can be detected.
Degassing method	Vacuum and ultrasound degassing
Separating method	Special single chromatographic column
Detection method	Special single gas sensor
Sampling methods	Digital automatic quantification sampling
Temperature control	Dual-loop thermostatic control
Data collection	Adjustable circuit design, automatic peak capturing and appearance section gain
communication mode	RS485,TCP/IP,GPRS
Network protocol	Support TCP/IP network protocol, support remote monitoring and remote maintenance
'Display mode	Report/trend chart/incremental analysis, data can be incorporated in user monitoring network
Display content	H2,CO,CO2,CH4,C2H6,C2H2,C2H4,O2,TCG
Alarm mode	Any set concentration, incremental alarm value; audible and visual alarm; spot remote transmission of alarm signal
analytical cycle	System default 24 hours/times, 2 hours to the minimum, set by user
Data storage	20 years
Temperature control precision	±0.1ºC
Environment temperature	-40ºC~+85ºC
Relative humidity	5-95%  No condensation
Maximum daily temperature difference	30ºC
Sunlight intensity	1kW/m2 (wind speed 0.5m/s)
Pollution level	External insulation creepage distance 25mm/kv
Ice cover thickness	20mm (when wind speed is not more than 15m/s)
Working power supply	Alternating current 220V±10%,50Hz
Carrier gas	99.999% of nitrogen gas, pressure 0.12-0.25Mpa
Installation size	800(length)×550(width)×1400(height)mm
Anti-vibration	5-17Hz,0.1" bimodal shift; 17-640Hz, 1.5G peak-to-peak acceleration
Anti-impact	Acceleration: 10G peak-to-peak

VI. Case on-site