| 摘要 |
The present invention provides a method for operation of an offline uninterrupted power supply (100), in particular a medium-voltage uninterrupted power supply, for providing power to a load (102) in case of failure of a power source (106), the offline uninterrupted power supply (100) comprising at least one disconnect switch (112), which is arranged between the power source (106) and the load (102), at least one energy storage (114), at least one power converter (116), which is arranged between the at least one energy storage (114) and the load (102) at a load side of the disconnect switch (112), and a control device (12) for controlling the at least one power converter (116) to provide power from the at least one energy storage (114) to the load (102) in case of failure of the power source (106), comprising the steps of performing a compensation of impedance between the at least one power converter (116) and the load (102), and performing a compensation of impedance between the at least one power converter (116) and the disconnect switch (112). The present invention also provides an offline uninterrupted power supply to perform the above method. |
