Power management method, power management server, local control apparatus, and power management system
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Solution Overview
Problem
Current power management systems lack an efficient method to manage the influence of distributed power supplies on power demand-supply balance in virtual power plants, particularly in interchanging power among facilities and maintaining grid stability.
Innovation Solution
A power management method and system that involves a power management server and local control apparatuses, where the server calculates and manages the influence of distributed power supplies by receiving operation state information from local control apparatuses at each facility, allowing for precise control of power flow and demand-supply balance through communication networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distributed power supply information is collected from multiple facilities to calculate influence on power demand-supply balance, then the accuracy of power balance management is improved, but the communication load and system complexity increase
Solution Approach 1:
The system divides power management into hierarchical levels: local control apparatuses at individual facilities and a central power management server. Each local apparatus independently collects distributed power supply information from its facility and transmits to the server, which aggregates data from multiple facilities to calculate overall power demand-supply balance influence. This segmentation reduces communication load on individual components while maintaining system-wide accuracy.
2Speed
If real-time operation state information is transmitted from local control apparatus to power management server, then the responsiveness of power balance control is improved, but the communication bandwidth consumption increases
Solution Approach 1:
The system extracts only the essential operation state information from local control apparatuses that is necessary for calculating power demand-supply balance influence. Instead of transmitting all possible operational data, the system identifies and transmits only the critical parameters needed for power balance management, reducing communication bandwidth consumption while maintaining control responsiveness.
3Measurement precision
If the power management server calculates influence based on distributed power supply information from all facilities, then the accuracy of surplus power estimation is improved, but the calculation time and processing load increase
Solution Approach 1:
The power management server performs preliminary calculations by aggregating distributed power supply information from multiple facilities before calculating the overall influence on power demand-supply balance. By pre-processing and organizing data from all facilities in advance, the server reduces the computational burden during actual balance calculations, thereby decreasing calculation time while maintaining estimation accuracy.
Data Source
AI summary
A power management method includes a step A of specifying an influence of a distributed power supply on a power demand-supply balance by a power management server, the power management server managing a plurality of facilities and the distributed power supply being individually provided in each of the plurality of facilities; and a step B of transmitting distributed power supply information from a local control apparatus to the power management server, the local control apparatus being individually provided in each of the plurality of facilities and the distributed power supply information including information indicating an operation state of the distributed power supply, wherein the step A includes a step of specifying the influence on the power demand-supply-demand balance based on the distributed power supply information.