EV Power Station Control Memory for VPP Communication Failures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Communication failures between a control server and an electric-vehicle power station in a virtual power plant (VPP) lead to a decrease in charging/discharging performance, as the electric-vehicle power station cannot receive control instructions for charging and discharging.
Innovation Solution
A communication failure handling device and method that includes a processor and memory in the electric-vehicle power station, allowing it to store and read control instructions for charging/discharging operations, even when communication with the control server is disrupted. The device performs the charging/discharging operation based on pre-stored information for a second period longer than the first transmission period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric-vehicle power station relies on real-time communication with the control server for charging/discharging operations, then the control precision and system coordination are improved, but the system reliability deteriorates when communication failures occur
Solution Approach 1:
The electric-vehicle power station stores control instructions in advance before communication failure occurs. The memory device saves charging/discharging control information received during normal communication, enabling the system to execute pre-stored instructions when communication is interrupted, thus maintaining operation continuity without real-time control input.
Solution Approach 2:
The memory device acts as an intermediary between the control server and the charging/discharging execution mechanism. It bridges the communication gap by holding control instructions locally, allowing the power station to continue operations based on stored data even when the direct communication path is broken.
2Speed
If the control instruction transmission cycle is shortened to improve real-time control, then the control responsiveness is improved, but the complexity of communication management increases during failure scenarios
Solution Approach 1:
Control instructions covering multiple transmission cycles are stored in advance in the memory device. This allows the system to execute a sequence of control operations without requiring continuous communication, thereby maintaining fast effective control while reducing communication frequency and simplifying failure handling.
Solution Approach 2:
The system ensures continuous charging/discharging operations by executing pre-stored control instructions from memory when communication is unavailable. This maintains the useful action of power management without interruption, avoiding the need for complex restart or re-synchronization procedures that would increase system complexity.
Data Source
AI summary
Information on a charging/discharging operation in a second period which is longer than a first period is transmitted as a control instruction from a control server. A communication failure handling device stores the control instruction transmitted in a cycle of the first period from the control server in a memory that is able to be accessed by an electric-vehicle power station regardless of a communication state between the control server and the electric-vehicle power station. When a communication failure has occurred between the control server and the electric-vehicle power station, the communication failure handling device causes the electric-vehicle power station to perform a charging/discharging operation based on the control instruction stored in the memory.