This case involves the use of SmartGen's HGM9510 parallel control module that can realize multi-units parallel connection; HGM9560 multi-units grid-connection control module can realize parallel connection of power generation and mains supply. With the cooperation of the two, it can meet the requirement of multi-units parallel connection and grid-connection with mains supply, realizing the application of the constant power output and the shear peak of the units.
The operation data of the two units are as follows
The first unit, accumulative power: 1204.4 MWH; power factor: 0.89; accumulative running time: 10,528 hours.
The second unit, accumulative power: 795.4mwh; power factor: 0.77; accumulative running time: 10,528 hours.
Grid-connection diagram of the two units
Constant power output: the maximum active power output of the genset is what the setting active power output of the geneset. When the gensets and the mains supply are connected in parallel successfully, the power generation begins to output the load. When the active power output of the power generation reaches 100%, the remaining load is carried by the mains supply, which can also be considered the power generation as main use. When the load is less than the setting value of active power output of the power generation, the mains supply begins to soft unload tripping.
Mains supply shear peak: mains supply first starts with load, when the active power output reaches 100% of setting value, the control module is in automatic mode, gensets start automatically, closing and paralleling with mains supply after normal operation, units start soft unloading, receiving the rest of load, when the load is lower than the setting value of active power output of mains, the units stops for soft unload tripping.