Method for controlling power supply system
AssigneeLs Electric Co., Ltd.
InventorsJihong KIM, Kwangkyu HWANG, Dohyun KIM, Minjun PARK
Life of this patent
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Abstract
The present specification relates to an uninterruptible power supply device, an uninterruptible power supply system and a method for controlling the uninterruptible power supply system, and relates to a power supply device comprising a circuit breaker for switching connection to a power bus, thereby controlling the reception and supply of the power by opening and closing the circuit breaker according to various situations occurring in a system, a power supply system and a method for controlling the power supply system.
Claims30
A method for controlling a power supply system that comprises a plurality of power panels configured to convert power, which is supplied from each of a plurality of power supply sources including first and second Alternating-Current (AC) power sources supplying AC power and a battery power source storing DC power, into Direct-Current (DC) power, convert the DC power into driving power for driving loads, and supply the driving power to the loads, a bus line connected to power ends through which the DC power is input and output to and from the plurality of power panels, respectively, such that the DC power converted in the plurality of power panels flows therethrough, a plurality of circuit breakers disposed between the power ends and the bus line, respectively, to control connection and disconnection between the power ends and the bus line, and a control device configured to monitor and control the plurality of power panels, the method comprising:
- determining a supply target power panel to supply the DC power to a fault-occurred power panel when a fault has occurred in at least one of the plurality of power panels;
- closing at least one circuit breaker connected to the fault-occurred power panel and the supply target power panel, among the plurality of circuit breakers;
- and
- supplying the DC power from the supply target power panel to the fault-occurred power panel through the bus line.
A method for controlling a power supply system that comprises a plurality of power panels configured to convert power, which is supplied from each of a plurality of power supply sources including first and second Alternating-Current (AC) power sources supplying AC power and a battery power source storing DC power, into Direct-Current (DC) power, convert the DC power into driving power for driving loads, and supply the driving power to the loads, a bus line connected to power ends through which the DC power is input and output to and from the plurality of power panels, respectively, and second output ends separately provided from the power ends to output the DC power, such that the DC power converted in the plurality of power panels flows therealong, a plurality of first circuit breakers disposed between the power ends and the bus line, respectively, to control connection and disconnection between the power ends and the bus line, and a plurality of second circuit breakers disposed between the second output ends and the bus line, respectively, to control connection and disconnection between the second output ends and the bus line, the method comprising:
- controlling operations of the plurality of power panels according to power supply states of the plurality of power panels, respectively;
- determining a fault-occurred power panel among the plurality of power panels;
- transmitting information related to reception and supply of the DC power to the determined fault-occurred power panel and a supply target power panel which is to supply the DC power to the fault-occurred power panel;
- closing the first circuit breaker of the fault-occurred power panel and the second circuit breaker of the supply target power panel;
- and
- supplying the DC power from the supply target power panel to the fault-occurred power panel through the bus line.
Dependencies are inferred from the claim text.