State-owned engineering major Bharat Heavy Electricals Ltd (BHEL) is executing a 50 MW solar project for power generator Maharashtra State Power Generation Co. Ltd (MAHAGENCO) in Kaudgaon. For the project, it has invited bids for supply of 3-phase grid-connected power conditioning units (PCUs) housed in 1×5 MW or 2×2.5MW container. A total of 10 sets are required.
The selected bidder will also be responsible for commissioning of the supplied units, at the project site, for synchronizing the generated AC power with LV side of a transformer that connects to 33kV grid on HV side. Supply and installation of the integrated SCADA system for the overall power plant is within BHEL’s scope.
To be eligible, the manufacturer should have supplied and commissioned cumulative PCU capacity of minimum 500 MW for ground-mounted solar plants, including at least 10 numbers of 2.5 MW or higher capacity containerized PCUs (1500V) within the last 3 years.
Technical requirements
The minimum rating of each PCU housed inside the container shall be 1.25MW, 1500V. However, the output from the container shall be at 2.5MW level.
The PCUs should have inbuilt microprocessor-based maximum power point tracker to maximize energy drawn from the solar PV array. These should be designed for maximum DC input voltage of 1500V. Further, the vendor is required to confirm that the PCUs are suitable for overloading of DC input power up to 30%.
The PCUs must carry comprehensive warranty for 120 months from the date of commissioning or 123 months from date of supply, whichever is earlier.
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