Transformer Oil Chromatography Online Monitoring System

BP-500
Transformers are important electrical equipment in power systems and are also electrical equipment with more accidents in power systems. Their operating status directly affects the safety level of the system.

Consult

Features
Technical Indicators
Overall Dimension

1: Function and significance The transformer is an important electrical equipment in the power system, and it is also an electrical equipment with more accidents in the power system. Its operating status directly affects the safety level of the system. With the increase of the voltage level of the power system and the increase of equipment capacity, people have put forward higher and higher requirements for power supply reliability. Ensuring the safe and reliable operation of the transformer is of great significance to improving the power supply reliability of the power system. Although the necessary protection measures are taken during the operation of the transformer, accidents still occur during operation due to the complex internal insulation structure, uneven distribution of electric and thermal fields, etc. Therefore, in order to ensure the safe operation of the main transformer, people have developed many detection methods. Oil chromatography detection is one of the commonly used methods, which can not only detect faults, but also determine the type of faults and the speed of development of faults. However, chromatography is sampled and analyzed regularly, and it is difficult to detect sudden faults. In addition, the analysis process is complicated, with many links and large human errors. In order to grasp the operating status of the equipment at any time and detect sudden faults, the online monitoring technology is used to monitor the dissolved gas in the transformer oil online, which is of great significance for the state monitoring and state maintenance of power transformers. 2: Device principle BP-500 series online monitoring device for dissolved gas in transformer oil adopts full vacuum degassing technology, oil mist resistant long-life composite support chromatographic column, and MEMS technology micro thermal conductivity detector to achieve full detection of seven gas components and total hydrocarbon content in transformer oil: H2, CO, CO2, CH4, C2H4, C2H6, C2H2. 3: Compliance with standards Q/GDW 10536-2021 Technical Specifications for Online Monitoring Devices for Dissolved Gas in Transformer Oil DL/T 1498.2-2016 Technical Specifications for Online Monitoring of Substation Equipment Part 2: Online Monitoring Devices for Dissolved Gas in Transformer Oil DL/T 722-2014 Guidelines for Analysis and Judgment of Dissolved Gas in Transformer Oil 4: Technical features Oil and gas separation: full vacuum degassing method is adopted, with high separation efficiency and fast speed Gas separation: special composite chromatographic column is used to effectively separate each characteristic component Intelligent monitoring: supports automatic adjustment of sampling cycle, and immediately conducts secondary sampling verification if the data is abnormal. After confirmation, the sampling cycle is automatically shortened to track the operation status of the transformer in time Network protocol: supports TCP/IP network protocol, supports IEC61850, IEC104 and other protocols, and meets the requirements of online monitoring and integrated management of smart substations Expandability: It can integrate the monitoring of transformer oil temperature, core grounding and other working conditions, and can easily expand the monitoring items such as transformer partial discharge and bushing insulation Intelligent components: According to the Q/GDW issued by the State Grid Corporation Designed in accordance with the requirements of 410-2011 "Technical Guidelines for Intelligent High-voltage Equipment", it can be integrated into the transformer intelligent component cabinet Analysis cycle: 2 hours, can be set by the user Working power supply: AC220V-50Hz Working environment temperature: -20℃~55℃ (customizable -40℃~65℃) Working relative humidity: 5~95%, no condensation
Detection range and measurement error parameters BP-750 BP-500 Detection range μL/L Measurement error Detection range μL/L Measurement error Hydrogen H2 1～2000 ±1 or ±30% 5～2000 ±5 or ±30% Methane CH4 0.1～1000 ±0.1 or ±30% 0.4～1000 ±0.5 or ±30% Ethylene C2H4 0.1～1000 ±0.1 or ±30% 0.4～1000 ±0.5 or ±30% Ethane C2H6 0.1～1000 ±0.1 or ±30% 0.4～1000 ±0.5 or ±30% Acetylene C2H2 0.1～1000 ±0.1 or ±30% 0.4～1000 ±0.5 or ±30% Carbon monoxide CO 5～3000 ±5 or ±30% 25～3000 ±25 or ±30% Carbon dioxide CO2 5～15000 ±5 or ±30% 25～15000 ±25 or ±30% Meet the measurement requirements of 750KV and above transformers Meet the measurement requirements of transformers up to 500KV Note: The above parameters comply with Q/GDW 10536-2021 standard

Detection range and measurement error parameters
	BP-750		BP-500
	Detection range μL/L	Measurement error	Detection range μL/L	Measurement error
Hydrogen H2	1～2000	±1 or ±30%	5～2000	±5 or ±30%
Methane CH4	0.1～1000	±0.1 or ±30%	0.4～1000	±0.5 or ±30%
Ethylene C2H4	0.1～1000	±0.1 or ±30%	0.4～1000	±0.5 or ±30%
Ethane C2H6	0.1～1000	±0.1 or ±30%	0.4～1000	±0.5 or ±30%
Acetylene C2H2	0.1～1000	±0.1 or ±30%	0.4～1000	±0.5 or ±30%
Carbon monoxide CO	5～3000	±5 or ±30%	25～3000	±25 or ±30%
Carbon dioxide CO2	5～15000	±5 or ±30%	25～15000	±25 or ±30%
	Meet the measurement requirements of 750KV and above transformers		Meet the measurement requirements of transformers up to 500KV
Note: The above parameters comply with Q/GDW 10536-2021 standard