Power Management Server for Grid Reverse Flow Control
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Solution Overview
Problem
Existing power management systems struggle to effectively control power flow and reverse power flow amounts in facilities with distributed power supplies, as they rely solely on information from smart meters, which may not accurately account for reverse power flows.
Innovation Solution
A power management server and system that receive measurement information from smart meters and distributed power supplies, transmitting power control messages based on both total power flow and reverse power flow amounts to facilitate precise control of power operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only smart meter measurement information is used for power control, then device complexity is reduced, but power flow control accuracy deteriorates when distributed power supplies are present
Solution Approach 1:
The power flow measurement is segmented into two parts: total power flow measured by smart meter and distributed power supply output measured by separate measurement device. This segmentation allows each measurement component to focus on its specific function, resolving the contradiction between system simplicity and measurement accuracy.
Solution Approach 2:
The power management server acts as an intermediary that receives both smart meter data and distributed power supply measurement data, processes them together, and generates appropriate control messages. This intermediary approach enables accurate power flow control without requiring complex distributed control logic at the facility level.
2Measurement precision
If detailed load power consumption data is collected for accurate power control, then measurement precision improves, but device complexity and information loss increase
Solution Approach 1:
The invention extracts only the essential information needed for control decisions: total power flow from smart meter and distributed power supply output from measurement devices. By taking out only these critical parameters rather than collecting all possible load data, the system achieves sufficient measurement precision while minimizing information management complexity.
Solution Approach 2:
The system uses partial measurement information (total power flow plus distributed supply output) rather than complete load breakdown data. This partial action approach provides enough precision for effective power control without the burden of collecting and managing excessive detailed information.
Data Source
AI summary
A power management apparatus includes a receiver configured to receive measurement information obtained by measuring a power of a facility connected to a power grid; and a transmitter configured to transmit a power control message. The transmitter transmits the power control message based on an output power amount of a distributed power supply provided in the facility, in addition to the measurement information. The measurement information is information indicating a total power flow amount from the power grid to the facility or a total reverse power flow amount from the facility to the power grid. The distributed power supply is a power supply that allows a reverse power flow from the facility to the power grid.