______________________ O&M Strategy for Better Yield _____________________________ FIRSTGREEN
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______________________
O&M Strategy for Better Yield _____________________________
FIRSTGREEN
– Local Climate & Soil Strata i. Inverter Room Foundation Design.
ii. Inverter Ventilation System Design.
iii. Module Mounting Structure & its Foundation Design.
iv. DC/AC Cable Sizing and Trench Design.
v. Design of Earthing & Lightning Protection System.
vi. Area Drainage.
– System Requirement/Redundancy i. Spare Cable Feeders.
ii. Radial Feeder Vs Ring Main.
iii. Evacuation Facility.
iv. Switchyard Bus Bar Scheme.
v. Power Transformer Capacity.
FIRSTGREEN
– Grid Parameters / Network Study. i. Voltage Profile and Grid Availability at Utility Sub-Station.
ii. Protection Schemes employed at Utility Sub-Station.
iii. Telemetry Scheme for Real Time Data Transmission.
– Selection of BoS Components/Equipments. i. Cost Vs Reliability/Durability/Efficiency.
FIRSTGREEN
– Procurement
i. Vendor/Sub-Vendor Selection.
ii. Scope Dilution/Bifurcation.
iii. Compliance of QA System during Manufacturing.
– Construction i. Qualified Engineers and Supervisors.
ii. Milestones with defined timelines/duration of activities.
iii. Adherence to Protocols.
iv. Field Quality Assurance/Third Party Inspections/Audits.
– Project Handover i. Preparation and Liquidation of Punch Points vis-a-vis
Project Specification/Scope of Work/Approved Drawings.
ii. Copies of Approved Drawings/As-Built Drawings/Documents/Equipments/O&M Manuals.
iii. Test Certificates & Commissioning Documents.
FIRSTGREEN
– Project Handover
iv. Mandatory & Recommended Spares as per OEM Supplier.
v. Statutory Compliances.
vi. Warranty of Equipments/Materials.
FIRSTGREEN
• SOP.
• Asset List with details of Capital Equipments, Serial No., Make, Year of Manufacturing, Model No., RFID tag etc.
• OEM Service Support.
• AMC / Service Contract for Equipments/Systems not Covered in OEM Service Warranty.
• Required Tools, Measuring & Testing Equipments, PPE.
• Environment, Health & Safety Compliances & Reporting.
• Insurance Policies.
• Statutory Compliances like CEIG, CGWB, PCB, Local Bodies, Safety etc.
FIRSTGREEN
• Operation Interfaces :
String Monitoring Units, Circuit Breakers, Isolators, Metering and Protection Equipments, Lightning Arrestors, Display Instruments/Indication Lamps, Annunciation Facia & Alarms, Energy Meters (ABT/Trivector), Temperature Sensors, C&R Panels, RTCC Panels, Smoke Detectors, Fire Protection System, PLCC System etc.
i. Safe Start Up & Shutdown/Isolation. ii. Grid Voltage/Frequency Monitoring. iii. Alarm & Trip Settings of Relays for Sensitivity, Selectivity, Reliability
& Safety. iv. OLTC/OCTC of Power/Inverter/Auxiliary/Isolation Transformers to
maintain safe operating voltages. v. Real Time Data Communication to SLDC. vi. Understanding of relay indications and fault identification. Safe
isolation of Faulty Component/equipment/element. vii. Disturbance Recording in case of Faults for Analysis. viii. Log Book/Record keeping.
• Auxiliary Power/DC System Healthiness. • Earth Resistivity and Continuity Checks.
FIRSTGREEN
• INVERTERS
i. Central/String.
ii. Ventilation System.
iii. Details of SCB/SMU, Strings, Nos/Type/Make of Modules, Wattage, Connected DC Power, Voc, Isc, V-I Characteristic Curves.
iv. Control/Auxiliary Power Source (UPS).
v. DC/AC/Communication Cables Termination.
vi. Earthing.
vii. Settings-ACB, Temperature ( Cabinet, Heat Sink etc).
viii. LVRT Feature.
ix. FRT Feature.
x. Error Indications.
xi. Cable Entrance Sealing.
xii. Protection from Rain, Condensation, Moisture & Dust.
xiii. Spares.
FIRSTGREEN
• DC FIELD
i. Damaged Modules.
ii. Damaged Connectors/Cables.
iii. Strings Healthiness.
iv. DC Fuse Healthiness.
v. SMU Communication.
• SCADA i. Weather Monitoring Station Data.
ii. Inverter Alarms/Trips & Monitoring.
iii. String Monitoring through current imbalance.
iv. AC Power.
v. DC Power & DC Current & Voltage.
vi. Module Temperature Monitoring.
vii. Inverter Heat Sink/Cabinet Temperature Monitoring.
viii. Inverter Room Temperature Monitoring.
FIRSTGREEN
• PREVENTIVE
i. Schedule of Equipment Maintenance as per OEM recommendations. Fortnightly/Monthly, Quarterly/Half Yearly, Yearly.
ii. Availability of Tools, Safety Equipments & Consumables.
iii. Thermal Scanning for HOT SPOTS Identification.
iv. Testing.
v. Testing Results Validation Vis-a-Vis Previous Factory/Field Test Reports.
vi. Cleaning, Tightening, Oil Filling.
vii. Replacement of Worn Out Components, Damaged Cables/Connectors/Lugs/Termination Kits.
viii. Authorization of persons to receive and issue Permit to Work.
ix. Timely control of oil leakages.
x. Walk through/Patrolling of overhead transmission lines.
FIRSTGREEN
i. Daily Generation Report.
ii. Generation Loss Report.
iii. Auxiliary Consumption Report.
iv. Break Down Report.
v. Incidence Reporting.
vi. Module Cleaning Report.
vii. Preventive Maintenance Activity Report.
viii. Breakdown Maintenance Activity Report.
ix. Spares Inventory MIS.
x. Daily Water Consumption Report.
xi. CUF/PR.
xii. Pollution Control Board –Storage and Disposal of Used Batteries and Transformer Oil.
FIRSTGREEN
THANK YOU
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