Power Storage Operation Mode Messaging to Mitigate Communication Delay
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Solution Overview
Problem
Existing power management systems face challenges in appropriately controlling equipment due to communication delays between control apparatuses and power storage apparatuses, which affect the charging and discharging of storage batteries, especially when coordinating with distributed power sources like photovoltaic cells.
Innovation Solution
A management system that defines messages specifying operation modes for storage batteries, allowing the control apparatus to instruct and acquire information on the operation modes of the power storage apparatus, including cooperation with distributed power sources, thereby mitigating communication delays and enabling effective control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If communication between control apparatus and power storage apparatus is performed in real-time, then control responsiveness is improved, but communication delays cause control inaccuracy
Solution Approach 1:
The control apparatus stores operation mode information locally in advance before receiving it from the power storage apparatus. This preliminary storage allows the control apparatus to execute control actions immediately without waiting for real-time communication, thereby maintaining both fast responsiveness and accurate control even when communication delays occur.
2Adaptability or versatility
If multiple operation modes are supported for storage battery control, then system adaptability is improved, but message format complexity increases
Solution Approach 1:
A single message format is designed to universally handle multiple operation modes (charging, discharging, idle, cooperative modes) through a standardized structure. The message includes fields for operation mode identification, power levels, and timing parameters that can accommodate different modes without requiring separate message formats for each mode, thus maintaining simplicity while supporting versatility.
3Ease of operation
If communication protocol is simplified for ease of implementation, then ease of operation is improved, but information completeness is reduced
Solution Approach 1:
The message format uses parameter encoding to convey comprehensive operation mode information efficiently. By changing the representation of information into compact parameters (operation mode identifiers, power level indicators, timing parameters), the protocol maintains simplicity and ease of implementation while preserving complete operational information needed for accurate control.
Data Source
AI summary
A message specifying any one of a plurality of operation modes is defined between an EMS 200 and a power storage apparatus 140.