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MDD3000T Intelligent On - line Monitoring System for Transformers

MDD3000T Transformer on-line monitoring system is an online dynamic integrated transformer fault diagnosis system, composed of on-line monitoring and fault diagnosis. The on-line monitoring section includes basic units such as dissolved gases and micro-water in the oil, dielectric loss and partial discharge of the casing, and can expand the core ground, winding deformation, temperature load and switch input interface (cooling fan, oil pump, gas relay) Such as online monitoring. Fault diagnosis part includes fault diagnosis module, fault qualitative and positioning diagnosis module, fault severity and development trend analysis module, fault hazard assessment module and maintenance strategy module.

MDD3000T Transformer intelligent components are transformer intelligent devices, mainly by iMAS2020T embedded processor (main IED), iMGA2020 chromatogram micro water monitoring IED, iPDM2020T partial discharge monitoring IED, iIMM2020 casing insulation monitoring IED, iCSM2020 cooling unit monitoring IED, iOLTC2020 Switch monitoring IED, iOCM2020T condition information monitoring IED, iOFT2020 winding temperature fiber monitoring IED and fiber switches, and according to the need to expand other monitoring IED. Each IED is equipped with fanless cooling to improve reliability, the use of shelves 19-inch standard chassis installed in the cabinet. Transformers each phase using a set of intelligent components, in the field near the transformer installation, and access to MDS4000 system, intelligent substation status monitoring and evaluation system components.

Monitoring content：

MonitorIED	Project	Monitoring content	Analysis Project	Analysis model
iMGA2020	Body	Dissolve gas in oil	The concentration of dissolved gas in the oil, and the gas production rate of the dissolved gas component in the oil	GB/T 7252（IEC 60599）
		Oil content in oil
iPDM2020T		Partial Discharge	Discharge capacity, discharge frequency, discharge type, discharge position	IEC62478 GB/T 7354（IEC60270）
iIMM2020	casing	Dielectric loss	Dielectric loss, equivalent capacitance, last screen current	DL/T 962-2005
		Equivalent capacitance
		The end of the screen current
iCSM2020T	Cooling unit	Cooler fan and pump operating status	Winding hot spot temperature Winding hot spot temperature cooling device efficiency Temperature equilibrium state	DL/T 984-2005 IEEE C57.91-1995 IEC354 IEC60076-7 GB/T15164
		Cooler fan and pump motor drive current
		Cooler fan and pump total run time
		Cooler intelligent control
iOLTC2020	Tapping switch	Stall state	Contact wear Control reliability	/
		Motor drive current
		Protect the relay state
		Online oil filter status
		OLTC intelligent control
iOCM2020T	Condition information	Load voltage, current	Voltage effective value Current rms	/
		Main tank gas pressure
		Main oil tank oil level and oil level status
		Core, clip, neutral ground current
		Environment, cabinet temperature and humidity
		Top, bottom oil temperature and winding temperature
iOFT2020	Winding	Winding temperature	Transformer aging rate Transformer life loss	DL/T 984-2005 IEEE C57.91-1995 IEC354 IEC60076-7 GB/T15164
iMAS2020T	Intelligent components	The LordIED	Transformer aging rate/div> Transformer life loss Comprehensive evaluation of transformer status	Own assessment model

Substation monitoring

Transmission class

Scheduling class

Power quality class

Other

· ADS4000 Power Transmission and Distribution Equipment Integrated Condition Monitoring and Evaluation

· Transformer intelligent cooling monitoring system

· Intelligent Substation Auxiliary System Integrated Monitoring Platform

· Transformer On - line Chromatography System Calibration Device

· On - load tap - changer on - line

· IEC61850 protocol converter

· Status information access controller

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