Communication Apparatus for Power Management Status Reporting
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Solution Overview
Problem
The existing power management systems lack a defined procedure for transmitting output suppression messages from communication apparatuses in power conversion systems to power management apparatuses, making it challenging for the power management apparatuses to determine whether the conditions for stopping the conversion apparatuses are satisfied.
Innovation Solution
A communication apparatus with a first unit to receive output suppression messages from an external server and a second unit to communicate with a power management apparatus using a predetermined message format, including information elements for communication status and acquisition status, allowing the power management apparatus to determine the conditions for stopping the conversion apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication apparatus is added to enable message transmission between power conversion apparatus and power management apparatus, then the power management apparatus can receive output suppression messages, but the system complexity increases due to additional communication components and undefined message formats
Solution Approach 1:
The communication apparatus is designed to handle multiple functions: receiving output suppression messages from external servers, transmitting status information to power management apparatus, and maintaining communication with conversion apparatus. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing complexity while improving reliability
Solution Approach 2:
The communication apparatus acts as an intermediary between the conversion apparatus and the power management apparatus. It receives messages from external servers, processes them, and transmits appropriate status information to the power management apparatus, thereby enabling reliable power management without requiring direct complex connections between all components
2Measurement precision
If the communication apparatus transmits detailed status information to the power management apparatus, then the power management apparatus can accurately assess output suppression conditions, but the amount of data transmitted and processed increases
Solution Approach 1:
The communication apparatus extracts and transmits only the essential status information elements needed for power management decisions, such as communication status and acquisition status of output suppression messages. This selective extraction provides sufficient measurement precision for assessing output suppression conditions while avoiding the transmission of unnecessary data that would increase processing overhead
Solution Approach 2:
Different information elements are transmitted with appropriate detail levels based on their specific purposes. Critical status information for output suppression assessment is transmitted with high precision, while less critical information is transmitted with appropriate but reduced detail, optimizing the balance between measurement precision and data transmission efficiency
3Reliability
If the system implements comprehensive message format standards for communication, then the power management apparatus can reliably determine stopping conditions, but the implementation and maintenance of these standards becomes more complex
Solution Approach 1:
The message format is segmented into distinct information elements, each with a specific purpose (e.g., communication status, acquisition status). This segmentation allows for standardized, modular implementation where each element can be independently defined, implemented, and maintained, reducing overall complexity while ensuring reliable output suppression control through comprehensive coverage of necessary status information
Data Source
AI summary
A communication apparatus comprises a first communication unit configured to receive, from an external server, an output suppression message instructing output suppression of a dispersed power source; and a second communication unit configured to perform communication of a predetermined message having a predetermined format with a power management apparatus that manages power of an equipment installed in a consumer's facility. The output suppression of the dispersed power source is performed in accordance with the output suppression message by a conversion apparatus that converts DC power output from the dispersed power source to AC power. The predetermined format includes an information element capable of storing at least one of first information and second information, the first information being related to a communication status with the conversion apparatus, the second information being related to an acquisition status of the output suppression message. The second communication unit is configured to transmit, to the power management apparatus, the predetermined message including at least one of the first information and the second information as an information element.