Power Storage Relay Panel Signal Masking for Maintenance Downtime
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power storage systems experience prolonged downtime during maintenance, particularly when monitoring lithium-ion storage batteries, leading to reduced user convenience and inefficiency, as operations are stopped for maintenance even for batteries in a normal state due to detection of abnormal or warning states.
Innovation Solution
The implementation of a power storage system with relay panels and maintenance devices that allow for a masking function, enabling maintenance to be performed while storage battery groups are in an operating state by temporarily invalidating monitoring signals for the battery panel being maintained, allowing other panels to continue operating and reducing downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If storage batteries are monitored continuously to detect abnormal or warning states, then system reliability is improved, but system downtime increases during maintenance
Solution Approach 1:
The system divides storage batteries into multiple independent panels, each with its own monitoring and control capabilities. This segmentation allows individual panels to be maintained without affecting the operation of other panels, thereby reducing overall system downtime while maintaining continuous monitoring of all panels.
Solution Approach 2:
A maintenance device is introduced as an intermediary component that enables maintenance operations without requiring complete system shutdown. The maintenance device facilitates signal masking and panel isolation, allowing technicians to perform maintenance on specific panels while the rest of the system continues to operate and be monitored.
2Reliability
If operations are stopped for maintenance of storage battery panels, then maintenance safety is improved, but productivity decreases
Solution Approach 1:
The system extracts the maintenance function from the operational flow by providing a dedicated maintenance device that interfaces with the relay panel. This allows maintenance operations to be performed on isolated panels without stopping the entire system, thereby maintaining productivity while ensuring safety through electrical isolation of the maintenance area.
Solution Approach 2:
The system maintains continuous operation of non-maintained panels while maintenance is performed on specific panels. The masking function allows the system to continue monitoring and operating with masked signals from panels undergoing maintenance, ensuring uninterrupted useful action across the overall system.
3Ease of repair
If all storage battery groups are stopped for maintenance, then ease of maintenance is improved, but loss of time increases
Solution Approach 1:
The system segments storage batteries into independent panels that can be maintained individually. This segmentation allows maintenance personnel to work on one panel at a time while other panels remain operational, making maintenance easier to schedule and execute without requiring complete system shutdown, thereby reducing total maintenance stop time.
Solution Approach 2:
Instead of stopping all panels for maintenance, the system applies partial action by isolating and maintaining only the specific panel that requires attention. The masking function allows the system to tolerate masked signals from maintained panels, enabling maintenance on a portion of the system without affecting the rest.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An object of the present invention is to provide a technology with which the time of stopping operations of storage battery groups in performing preventive maintenance and maintenance works of storage batteries in a power storage system can be reduced. In the power storage system of the present invention, a storage battery panel 3 transmits a first signal (F1) based on monitoring of states of storage battery packs 4 to a superordinate relay panel 2, and the relay panel 2 transmits a second signal (F2) based on the first signal to a superordinate power control device 1. A maintenance device 5 transmits, based on an operation of designating a storage battery panel 3 to be maintained by a maintenance person, a third signal (M) to the superordinate relay panel 2 of the storage battery panel 3 to be maintained, and the relay panel 2 masks and invalidates the first signal from the storage battery panel 3 to be maintained or the second signal based on the first signal in accordance with the third signal.