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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
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An automated diagnostic system to streamline DSM project maintenanceJohan du Plessis15 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
Energy Management System Control philosophy Physical system Maintaining an Energy Management System (EMS) Hardware Software Networking • Physical system: • Control and measurement equipment • PLCs • SCADA systems • Networks • Control philosophy
Maintaining an Energy Management System (EMS) • A typical EMS: • ESCO responsibility: • EMS implementation • Performance assessment • Handover to the client . Equipment/ machines Production environment SCADA PLCs EMS server
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 site Maintenance centre Device 1 Remote Diagnostic and Maintenance Systems (RDMS) APN/VPN Device 2 Device X Local processing • RDMS composition: • Maintenance centre • Remote site • Secure communication channel • Information exchange .
RDMS integration with an EMS . Equipment/ machines SCADA system PLCs EMS server Production environment
. RDMS integration with an EMS • Integration: • Maintenance centre • Diagnostics and Maintenance Agent (DMA) • HSPA router • Private Access Point Name (APN) • Remote access software EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
. RDMS integration with an EMS • DMA collects software information • Version • Running status • Responsiveness • Memory usage EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
. RDMS integration with an EMS • DMA collects network information • SCADA • Router • Mail server EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
. RDMS integration with an EMS • Modifications to energy management software • Parameters of the control philosophy • OPC connection status • Information on the controlled process EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
. RDMS integration with an EMS • DMA collects EMS server information • Operating system uptime • Network interfaces and configuration • User privilege • Firewall policies EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
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 EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
. EMS remote diagnostics EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
. EMS remote diagnostics EMS server SCADA Energy management DMA Software Redundancy Data communication Maintenance centre Remote access HSPA router
. EMS remote diagnostics Site A Site B Site X Site G Site C Maintenance centre Site F Site D Site E
Conclusion • 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