Power Supply System Controller Managing Contract Power Limits
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Solution Overview
Problem
Conventional power generation systems face issues where they cannot be activated or stopped efficiently due to exceeding contract electric power limits, leading to breaker tripping and loss of power generation, especially when external electric power load consumption is high.
Innovation Solution
A power supply system with a power storage unit and controller that predicts and manages electric power distribution to prevent exceeding contract limits by supplying stored power to the power generation system and external load, ensuring that the power generation system's activation and stop operations do not exceed the upper limit electric power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the power generation system is activated when the sum of activation electric power and external load power consumption exceeds contract electric power, then the power generation system can be activated, but the breaker trips and the power generation system is forced to stop
Solution Approach 1:
The controller predicts future power consumption of the external load and determines in advance whether activation will exceed contract electric power. This preliminary assessment allows the system to prepare appropriate control actions (such as discharging the power storage unit) before activation occurs, preventing breaker tripping while enabling successful activation.
Solution Approach 2:
The power storage unit acts as an intermediary between the power generation system and the external load. By charging or discharging the power storage unit, the system can buffer power fluctuations and ensure that the sum of power from the power generation system and external load does not exceed contract electric power, thus preventing breaker tripping.
2Productivity
If the power generation system is stopped when the sum of stop electric power and external load power consumption exceeds contract electric power, then the power generation system can be stopped, but the breaker trips and power generation is lost
Solution Approach 1:
The controller predicts future power consumption and determines in advance whether stopping will cause the external load power consumption alone to exceed contract electric power. This allows the system to prepare control actions (such as discharging the power storage unit to supplement power) before stopping occurs, preventing breaker tripping while enabling successful stop.
3Productivity
If the power consumption of the external electric power load is continuously large, then the power generation system can serve the load, but the sum exceeds the upper limit of electric power supplied from the electric power system
Solution Approach 1:
The controller continuously monitors the power consumption of the external load and the state of charge of the power storage unit. Based on this feedback and predictions of future power consumption, the controller dynamically adjusts the charging/discharging strategy of the power storage unit to ensure that the sum of power from the power generation system and external load does not exceed contract electric power, while still meeting the external load's power demands.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution prevents the power supply system from exceeding the upper limit electric power, improving both activation and stop performance by effectively managing power distribution, thus preventing breaker tripping and ensuring continuous operation.
Implementation Method 1
a power storage unit configured to supply electric power to the power generation system and an external electric power load
Data Source
AI summary
A power supply system of the present invention includes: a power generation system (101); a power storage unit (107) configured to supply electric power to the power generation system (101) and an external electric power load (105); and a controller (110) configured to, in a case where it is predicted that at least one of the sum of activation electric power of the power generation system (101) and power consumption of the external electric power load (105) when activating the power generation system (101) and the sum of stop electric power of the power generation system (101) and the power consumption of the external electric power load (105) when stopping the power generation of the power generation system (101) exceeds the upper limit electric power receivable from an electric power system (104), supply the electric power of the power storage unit (107) to at least one of the power generation system (101) and the external electric power load (105) such that the electric power amount supplied from the electric power system (104) does not exceed the upper limit electric power.