Power Saving Control Device for Load Stability
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Solution Overview
Problem
Existing power saving control methods fail to reduce system power consumption when load device power reduction is inappropriate, leading to obstructed application of power storage devices and unnecessary utilization restrictions.
Innovation Solution
A power saving control device that determines whether to perform power saving control based on current power flow conditions, such as forward and reverse current flows, to ensure that power reduction contributes to stable system operation, thereby avoiding inappropriate power saving executions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power saving control is performed by reducing load device power consumption, then power consumption is reduced, but system power supply stability deteriorates when power storage devices are discharging
Solution Approach 1:
The control device monitors power flow direction between power storage devices and the power system, using this feedback to dynamically adjust power saving control execution. When discharging is detected, power saving control is suppressed to maintain system stability; when charging or idle state is detected, power saving control is executed to reduce consumption.
Solution Approach 2:
The system dynamically adjusts its operation mode based on real-time power flow conditions. The power saving control execution is made variable rather than fixed, adapting to changing system states (charging/discharging/idle) to optimize both energy efficiency and system stability.
2Loss of energy
If power saving control is executed to reduce load device consumption, then energy efficiency improves, but power storage device application is obstructed
Solution Approach 1:
The system uses feedback from power flow monitoring to intelligently determine when power saving control should be executed or suppressed, allowing power storage devices to fulfill their intended energy management function rather than being obstructed by inappropriate power saving actions.
3Use of energy by moving object
If power saving control is performed without considering power flow conditions, then power consumption is reduced, but load device utilization is unnecessarily obstructed
Solution Approach 1:
The control device performs preliminary assessment of power flow conditions before executing power saving control. By checking whether the power storage device is charging, discharging, or in idle state beforehand, the system avoids unnecessary power saving actions that would obstruct load device utilization while still achieving energy reduction when appropriate.
Data Source
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AI summary
A power saving control device (170) includes: an acquirer (171) that acquires a power saving request; and a controller (172) that determines whether or not power saving control for reducing a power consumption of a load device (150) is to be performed in response to the power saving request, and that, when determining that the power saving control is to be performed, performs the power saving control. When the load device (150) consumes power, the controller (172) determines that the power saving control is not to be performed under a condition that no power flows from a power system (180) into a facility (110) in which the load device (150) is installed, the condition being one of one or more conditions.