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An automated diagnostic system to streamline DSM project maintenance
Johan du Plessis
15 August 2012
Introduction
Equipment requires maintenance due to: Malfunction Changes in the operating environment Scheduled maintenance procedures
Consider DSM projects that include the implementation of an EMS
An EMS consists of: complex equipment computer hardware and software networking
An EMS requires regular maintenance
Maintaining an Energy Management System
(EMS) Physical system: Control and measurement equipment PLCs SCADA systems Networks
Control philosophy
Energy Management System
Control philosophy
Physical system
HardwareSoftware
Networking
Maintaining an Energy Management System
(EMS) A typical EMS:
ESCO responsibility: EMS implementation Performance assessment Handover to the client
.
EMS server
Equipment/machines
SCADA PLCsProductionenvironment
Maintaining an Energy Management System
(EMS) Typical maintenance requiring issues: Power interruptions Hardware failure Software failure Network failure Data corruption/loss
Changes to the controlled process causes the control philosophy to become ineffective requires maintenance of the control philosophy takes more time and technical knowledge to correct
Maintaining an Energy Management System
(EMS) Maintenance efforts of an ESCO: Monitoring performance Detecting reduced performance Identifying the cause Finding a solutions Taking corrective action
Disadvantages: Labour intensive Requires technical insight
Challenging to maintain a large number of EMSs
Remote Diagnostic and Maintenance Systems
(RDMS) RDMSs have been successfully implemented: Vehicles Mobile devices Industrial equipment
Problems are diagnosed remotely Remote maintenance is possible
Remote Diagnostic and Maintenance Systems
(RDMS) RDMS composition: Maintenance centre Remote site Secure communication channel Information exchange
Maintenance centre
Remote site
.
Device 1
Device 2
Device X
APN/VPN
Local processing
RDMS integration with an EMS
..
Maintenance centre
SCADAEMS server
HSPA router
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
Integration: Maintenance centre Diagnostics and Maintenance Agent (DMA) HSPA router Private Access Point Name (APN) Remote access software
DMADMA
RDMS integration with an EMS
..
SCADAEMS server
HSPA router
DMADMA
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
DMA collects software information Version Running status Responsiveness Memory usage
Maintenance centre
RDMS integration with an EMS
..
SCADAEMS server
HSPA router
DMADMA
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
DMA collects network information SCADA Router Mail server
Maintenance centre
RDMS integration with an EMS
..
SCADAEMS server
HSPA router
DMADMA
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
Modifications to energy management software Parameters of the control philosophy OPC connection status Information on the controlled process
Maintenance centre
RDMS integration with an EMS
DMA collects EMS server information Operating system uptime Network interfaces and configuration User privilege Firewall policies
..
SCADAEMS server
HSPA router
DMADMA
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
Maintenance centre
EMS remote diagnostics
Agent software Collects information Transmits information
Maintenance centre Processing Database storage Daily reports (email, document/visual) Notification of failures or reduced performance Repair suggestions
EMS remote diagnostics
..
Maintenance centre
EMS server
HSPA router
DMADMA
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
SCADA
EMS remote diagnostics
..
Maintenance centre
SCADAEMS server
HSPA router
DMADMA
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
EMS remote diagnostics
..
Maintenance centre
SCADAEMS server
HSPA router
DMADMA
Sof
twar
e
Remote accessRemote access
Data communicationData communication
RedundancyRedundancy
Energy managementEnergy management
EMS remote diagnostics
..
Maintenancecentre
Site GSite G
Site ASite A
Site ESite E
Site CSite C
Site XSite X
Site DSite DSite FSite F
Site BSite B
Automated diagnostic system for EMS Monitors EMS and EMS performance Notifications and suggestions Reduces fault detection time Less labour intensive More user-friendly to non-technical personnel Allows ESCO to successfully maintain larger
numbers of EMSs
Conclusion
Recommended