Techno-Commercial aspects in Solar Power Development in Odisha Land - PowerPoint PPT Presentation

Techno-Commercial aspects in Solar Power Development in Odisha

Land Related Issues i. Availability. ii. Quality iii. Ownership iv. Cost

Comparison Between Technologies Sl No. Parameters Crystalline Thin film 1 Efficiency 13 to 16 % 8 to 12 % 2 Output/ MW High Varies as light 3 Performance in low light. Poor Better 4 Cost of cell High Low 5 Module of weight Light Heavy 6 Land required per MW 4 to 5 7 to 8 7 Maintenance Less High 8 De-Rating Low More 9 Availability Easy Limited 10 Temperature effect Yes Less 11 Stabilization Stable After 4-6 months

PV Related Issues i. Domestic/ Imported. ii. D.C and A.C Capacity. iii. Technology. iv. Module capacity and authenticity requirement v. Specifications to be provided.

Minimum technical requirement as per MNRE  Confirm to standard.  Traceability i. Manufacture. ii. Month and Year. iii. Country of origin. iv. I-V curve of the module. v. Wp, Im, Vm and FF vi. Sl No: and module no vii. Test Certification. viii.Warranty

STANDARDS  Crystalline Modules : IEC 61215  Thin film Modules : IEC 61646  Module Safety : IEC 61730  PV module (corrosive atmosphere) : IEC 61701  PCU and inverter efficiency : IEC 61683

Modules Mounting Structures  Design of Members  Height and tilt angle.  Foundation.  Tracking.

Effect of Tracking Sl No. Mode Energy Yield Land Requirement 1 Fixed Horizontal -8 to 9% -50% to 30% 2 Single Axis Seasonal +3 to 5% +20 to 30% 3 Single Axis Daily +20 to 25% +20 to 40% 4 Two Axis +25 to 30% +80 to 120%

Balance of System  Cables  Power Control Unit. Matching inverter, surge protection , MPPT, Containerised design.  Wake up and sleep mode.  Paralleling (RMU/ individual feeders)

EVACUATION  Voltage level.  Transmission line cost and time.  System study.  Pooling sub-station requirement.  Stability Problem

Protection features and grid integration  DC side protection. - Over voltage/ SPD protection to be provided between +ve to E, -ve to E & +ve to – ve. Both +ve and – ve should be fuse protected and - DC switch be provided.  Inverter Protection. - DC side : Breaker, SPD, Fuse, Capacitor. - AC Side : Filter, Varistor, AC breaker.

Grid Integration  Isolation in AC side.  AC:- OV, UV, OC, OC in stages, low f, high f protections.  DC:- OV, UV, OC, EF, reverse polarity.  Grid isolation and abnormality.  Emergency stop.  Harmonics and reactive power consideration.  LVRT and such other additional features.

Rooftop Installation  Installation conditions.  Capacity Limitations  Sale of Energy (Net Metering, GBI)  Commercial Transaction Issues.

Keeping cost of energy low  Tariff based bidding.  Turnkey Contract.  Turnkey contract with complete freedom for design.  Working in PPP mode.  Reduction in O&M period.  Govt. help through different schemes.  Taking advantage of economy of scale (Solar Parks)

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