This chapter reviews a range of monitoring systems that are currently available and the steps taken to provide the coordinated approach by developing an integrated system to present the 'complete substation picture'.

Chapter Contents:

• 21.1 Introduction
• 21.2 The evolution of condition monitoring systems
• 21.2.1 Periodic monitoring, 1960-1990
• 21.2.2 Basic discrete online monitoring, 1990-1999
• 21.2.3 More intelligent discrete monitoring, 2000-2009
• 21.2.4 Integrated substation condition monitoring (2010 onwards)
• 21.3 Objectives of condition monitoring
• 21.4 Application to key substation equipment
• 21.5 The substation environment
• 21.6 Condition monitoring platform
• 21.6.1 Data acquisition systems
• 21.6.2 Sensors and transducers
• 21.6.3 Conversion module
• 21.6.4 Interface module
• 21.6.5 Data acquisition module
• 21.6.6 Control PC module
• 21.6.7 Communication module
• 21.7 Data acquisition, analysis and diagnostics
• 21.7.1 Developing a common monitoring platform
• 21.7.2 Specification of the node unit data acquisition system
• 21.8 GDM node unit overview
• 21.8.1 Data collection
• 21.8.2 Predictive alarms and SF6 gas inventory
• 21.8.3 Maintenance
• 21.9 CBM node unit overview
• 21.9.1 Signals measured and recorded
• 21.9.2 System alarms
• 21.9.3 Data storage and display
• 21.10 PDM node unit overview
• 21.10.1 PDM node unit data collection
• 21.10.2 Node unit sequencer controls
• 21.10.3 Node unit noise monitoring and alarm control
• 21.10.4 Node unit system diagnostics
• 21.11 Power transformer monitoring
• 21.11.1 Sensors for dissolved gas analysis
• 21.11.2 Sensors for tap-changer monitoring
• 21.12 Cable monitoring
• 21.12.1 Sensors for cable monitoring
• 21.13 Surge arrester monitoring
• 21.14 ISCM system overview
• 21.14.1 Substation gateway
• 21.14.2 CM module: PD monitoring
• 21.14.3 CM module: gas density monitoring
• 21.15 ISCM systems going forward
• 21.16 Concluding remarks
• Acknowledgements
• References
• Appendices
• A: Gas density monitoring transducer options
• B: Circuit breaker monitoring data sampling rates
• C: Partial discharge monitoring data sampling rates
• D: Disconnector and earth switch monitoring data sampling rates

Inspec keywords: condition monitoring; substations

Other keywords: monitoring systems; substation; condition monitoring; integrated system

Subjects: Substations