Operations and Maintenance
On the right track A NSW business has established itself as the country’s leading condition monitoring solutions provider for point machines. Imagine if railway companies could monitor the health of the pneumatic and electric points along the tracks. Imagine if they used a system that could help them keep an eye on point operations, identify maloperation and impending point failures, and alert railway network operators so that remedial actions can then be scheduled before a potentially catastrophic failure occurs. Well, imagine no more, for such a solution exists. An Australian company, CHK Power Quality (CHK PQ) has developed a Points Condition Monitoring (PCM) system. The company designs and manufactures power quality analysers, load loggers, transformer monitors and asset monitoring equipment. The PCM system comprises three main sections, namely (see Figure 1): 1. Data collection via the Miro Points PCM, from electric or pneumatic points 2. A proprietary database called AsMoSys which collects data remotely from commissioned PCMs, initiates alarms and automatically transmits notifications to key personnel 3. A user interface that enables end users to set up and commission PCMs, interrogate the database to view network status, reset alarms, and generate various performance reports. As CHK PQ Sales Director Johnson Mariswamy explains, engineers can view PCM operation graphs and save them to a catalogue, with users able to create reports by selecting measurements for a specified time period to be displayed.
Figure 1: System diagram.
SET-UP AND CONFIGURATION VIA CITRUS A critical part of the system is the proprietary software named Citrus, which can be used to communicate directly with the Miro PCM to download and view data, configure the PCMs, and upgrade firmware OTA (Over the Air). Using Citrus, the user can quickly set up the PCM at the office, before deploying the PCM. TRAINING Once installed and commissioned, every PCM is “trained” to monitor and characterise the normal operation of the point. The trained PCM then monitors every point operation and determines if the operation is within allowable limits or ‘normal’. If normal operation thresholds are exceeded, alarms are raised and notifications sent to relevant staff, e.g., signal engineers. Email notifications include a graphic representation of the ‘abnormal’ operation, so field staff can be deployed with necessary materials to quickly rectify the problem. ASMOSYS DATABASE SOLUTION FEATURES The AsMoSys database solution boasts multiple functions, including: • Creation of new assets (eg. new set of points) and assigning a specific PCM to that asset • Setting up and maintaining user logins and access levels • Setting up training limits for approval and commissioning new point condition monitors • Viewing the overall railway network, point locations and state of the points (Normal, Alarm, Alert). A ‘traffic light’ system allows easy identification of point status • Creating and maintaining event catalogues that users can refer to when trying to identify and understand point operation behaviour, faults, and peculiarities • Creating multilevel reports (e.g., individual point, group of points or network wide), including operation trends and maintenance intervals. PCM MODELS Two PCM models are currently available from CHK PQ:
A Point Condition Monitor (pneumatic).
• The PCM-Electric is used with electrically driven point machines, with voltage and current inputs • The PCM-Pneumatic is used with pneumatically driven point machines, with pressure and flow rate inputs “The PCM-Electric is normally installed in a rail location cabinet (LOC) and not necessarily located close to the electric point/s, while the control cabinet containing the PCM-Pneumatic is installed in an enclosure located close to the pneumatic point,” Mariswamy said. The PCMs are equipped with remote cellular or Ethernet, for remote communications. REDUCTION OF CAPITAL, MAINTENANCE AND OPERATIONAL COSTS “The PCM allows railway operators to monitor point operation trends and optimise maintenance intervals,” Mariswamy said. “The trends include changes in point operation duration, load current and flow rate.” He said the benefits of PCMs and the data it provides are manifold. “These include improved operational statistics, reduced train disruption, optimised maintenance intervals, and subsequently minimised operational and maintenance costs.” THE CHKPQ DIFFERENCE CHK PQ’s technical expertise was recognised when it was recently awarded a long-term contract by a major NSW railway network owner and operator to supply, install, test and commission PCMs. “Our mission is to enable customers to identify, monitor and resolve issues to optimise the performance and reliability of plant and equipment, thereby reducing operating costs,” Mariswamy said. He stressed the company’s commitment to excellence in before-and-after sales support, always treating customers with respect and responding to every query promptly and accurately. “Our engineers are always ready to address technical issues and provide prompt resolutions, and we always work with customers to develop and implement new features that will make the user experience a delightful one,” he said.
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