Featured Product. Transformer Monitoring and Diagnostic Systems

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1 Featured Product Transformer Monitoring and Diagnostic Systems

2 Transformer Predictive Analysis Owners of critical transformer equipment can realize the benefits of predictive analysis on transformer health and the development of a true condition-based maintenance program. This offering includes specific monitoring components that are configured into a customized system that correlates key transformer data and models actual operating conditions.

3 TMS Transformer Monitoring System (TMS) is primarily health monitoring of the equipment that can acquire, process, analyze & communicates the critical parameters to centralize Data Center for analysis and visualization of wide spread Distribution Transformers and Power Transformer in Electrical Network

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5 Background Transformers are very important plant assets and their health is crucial to the operation of the facility. Periodic inspections and tests are not always sufficient to identify developing issues. Oil analysis alone cannot cover many failure modes. Many transformer units installed at industrial plants have very unique and complex designs.

6 TMS TMS increases the reliability of distribution network. Not only the conventional technical data, such as current, voltage, etc., but also other critical information such as moisture, oil temperature, oil level etc. of transformers, are required by the operators to ensure reliable power delivery and to assist the day-to-day decision making activities.

7 MONITORING FUCTIONS BUSHING Operating Voltage Over voltages Change of bushing capacitance Power factor Loading current ( single or three Phase) ACTIVE PART Power (apparent, active, reactive) Oil temperature (top and bottom) Ambient temperature Gas in oil (single or multi gas sensors) Moisture in oil and paper Hot spot temperature ( fiber optic measurement) PARTIAL DISCHARGES Electrical, acoustic and UHF methods available

8 MONITORING FUCTIONS ON-LOAD TAP CHANGER Tap position Number of switching operations Switching time Power consumption of the OLTC motor drive OLTC oil temperature and differential Sum of switched current Contact wear

9 MONITORING FUCTIONS COOLING SYSTEM Oil temperature at the cooler inlets and outlets Cooling efficiency Running hours of pumps and fans Content of gas in the Buchholz relay Oil level in conservator Intelligent cooling control Auxiliary equipment statuses and alarms (pressure relief device, OTI, WTI, Buchhloz relay etc.)

10 Key transformer data includes Dissolved gas in oil Moisture in oil Top oil temperature Bottom oil temperature Ambient temperature Cooling fan and pump status Load current Tap changer information (if equipped)

11 Spectro modeling predictive analysis information Apparent power Winding hot spot Moisture and bubbling Moisture in paper Moisture in barrier Dynamic loading Insulation aging Diagnostic alarms Prognostic alarms Health index Risk index

12 Monitoring condition of Insulation Degradation On line Dissolved gas Analysis, Hot spot, and Tan delta of bushing for Power Transformer helps to monitor the health of transformer and more important loading of the transformer can be accurately controlled. Insulation integrity is vital to your transformer's operation. Moisture buildup and transformer overheating are two conditions which may lead to irreversible insulation degradation. NI crio accurately monitors the evolution of both moisture and carbon monoxide, allowing optimal scheduling of additional insulation integrity tests such as Dissolved Gas Analysis (DGA) and Furan testing.

13 Hydrogen Monitoring Even at the earliest stages of fault development, both thermal and electrical stresses on transformer oil will generate dissolved hydrogen. In addition, the highly mobile hydrogen is quickly distributed throughout the oil, providing an early and reliable fault signature. NI crio excels at timely and accurate low-level hydrogen measurements. When installed on your critical transformers, NI crio provides the earliest possible fault detection, and allows accurate real-time monitoring of subsequent fault evolution. This unique hydrogen measurement technology requires no calibration and is fieldproven to prevent equipment failure and extend transformer life.

14 Carbon Monoxide Monitoring Carbon monoxide is a by-product of cellulose degradation. Although generated in all transformers under normal operating conditions, anomalous amounts of carbon monoxide may be generated when localized cellulose overheating occurs. NI crio provides a dependable measurement of the CO baseline, and will alarm on a sudden increase of CO concentration. Timely follow-up with laboratory DGA and furan analysis will enable early detection of accelerated aging of solid insulation, before significant and irreversible damage is incurred. The TMS collects data from remote transformers with communication interface (GPRS/CDMA) to provide daily usage, total usage, real time data and long-term data management, automatic report generation, energy accounting & graphical representation of transformer on GIS at centralized Data Center

15 Program Features Selection of optimum components System design and engineering Hardware installation Communication system installation System and software integration Start-up and commissioning Supply of labor and technicians Project management Remote monitoring and diagnostics (optional)

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18 Components Bharti Automation has an extensive family of monitoring components that are easily configurable for customized transformer monitoring solutions. Many options are available for every budget and operational contingency. These range from basic composite gas and moisture monitoring of the main tank to multigas systems that collect the key data on both the main tank and an on-load tap changer tank.

19 This Program is applicable to:- All large single point of failure transformers Generator step-up (GSU) transformers Electric arc furnace transformers Rectifier transformer systems

20 Transformer Monitoring Benefits Reduced inspection and maintenance costs Reduced failure-related repair or replacement costs Reduced revenue losses due to lost plant production Deferred capital costs due to load growth or equipment age and condition Improved confidence and security for dynamic transformer overloading performance Detects incipient faults and assists in preventing failures and unplanned outages Enables the condition based maintenance Provides monitoring and diagnostic for all vital transformer parts by integrating the available sensors and supporting various IED communication protocols Built-in models for transformer condition assessment (bushings, thermal model, insulation ageing, cooling efficiency, OLTC) Bharti Automation