MONITORING & SCADA SYSTEMS
Reliable monitoring, smarter operations - Preventive SCADA maintenance
Preventive maintenance for monitoring and SCADA (Supervisory Control and Data Acquisition) systems is essential to ensure reliable performance, early fault detection, and maximum availability of the PV park.
As the eyes and brain of the solar plant, these systems enable precise control, optimization, and troubleshooting of all operations. Regular maintenance safeguards data integrity, system responsiveness, and cybersecurity — ensuring continuous and efficient plant performance.
1. Hardware Maintenance
Regular inspection and servicing ensure reliable operation of all monitoring components.
• Communication equipment (Ethernet switches, routers, modems, and fiber/RS485 links) is checked for dust, corrosion, and loose terminations.
• Power supply integrity and backup systems (UPS/batteries) are verified.
• SCADA servers and monitoring PCs undergo software updates, performance checks (CPU, memory, disk usage), and cooling system inspections.
• Aging hard drives are replaced proactively to prevent data loss.
• Remote Terminal Units (RTUs) and data loggers are verified for accurate signal acquisition from inverters, weather stations, and meters, with grounding and surge protection systems inspected for proper function.
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2. Software & System Health
Focus on maintaining secure, stable, and up-to-date operating environments.
• Regular backups of configuration files and historical databases.
• Firmware and software updates applied according to vendor specifications.
• Event and alarm logs reviewed for recurring communication or system errors.
• Database integrity checked to eliminate data gaps; archiving and storage optimization performed periodically.
3. Network & Cybersecurity
Robust cybersecurity measures ensure safe and continuous operation.
• Firewalls and antivirus definitions kept current.
• Access credentials updated on a defined schedule.
• Intrusion detection logs monitored for abnormal activity.
• VPN and remote access systems tested for reliability and security compliance.
4. Functional Tests
Verification of data accuracy and system responsiveness.
• Comparison of SCADA readings (power, voltage, current, irradiance, temperature) against calibrated field instruments.
• Simulation of alarm notifications and escalation procedures to validate response times.
• Functional testing of remote control commands (e.g., inverter start/stop, breaker open/close) to confirm immediate and reliable execution.
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5. Environmental Checks
Environmental control supports equipment longevity and data accuracy.
• SCADA rooms and control cabinets monitored for proper temperature and humidity.
• Inspections for dust ingress, rodent activity, and cable degradation.
• Verification of UPS operation and battery capacity to maintain continuity during outages.
6. Documentation & Reporting
Detailed documentation provides traceability and continuous improvement.
• Updated schematics of communication and monitoring architectures maintained.
• Firmware versions, patch histories, and test reports recorded systematically.
• All anomalies, corrective actions, and periodic maintenance results logged for trend analysis and audit compliance.
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