Customer demand:10 gensets are divided into 5 groups, two units of each group need to be connected in parallel. 5 step-up transformers boost 400V to 10kV respectively, 5 groups of generators are connected in parallel synchronously through 5 groups of bustie switches, and then connected in parallel with 10kV mains.
Unit Site
Solution:HGM9510 is selected for 10 gensets parallel, HGM9580 is selected for 5 groups of bus join cabinet, HGM9560 is selected for generator bus and mains parallel. Due to genset distribution room and diesel high voltage distribution room are too far, MSC communication selects CAN bus relay module SGCAN300 (CAN BUS to optical fiber).
Genset Parallel and Grid-connection Application
Working process:
1.When mains is connected to the grid, HGM9560 gen close/open key needs to be pressed manually to close load breaker, then schedule HGM9510 to start, HGM9580 automatically closes bustie switch synchronously at the same time, finally, gen and mains parallel synchronously, load outputs according to set active power output percentage by HGM9560.
2.When mains is abnormal, HGM9560 will automatically schedule genset to start; when gen close normally, HGM9580 will automatically close bustie switch in turn. After the external grid-connection/isolated grid knob is switched to isolated grid, load switch will automatically close, generator supplies power for load (generator takes all loads).
Debugging Site
After debugging, this application is completed successfully. The system is stably running, which wins customers’ praise.
Group Photo
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