Protection Terminal Backup Execution for Automatic Grid Restoration
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Solution Overview
Problem
The burden of restoring a protection and control system from abnormalities is high due to the need for manual intervention at the site, leading to significant human and economic costs.
Innovation Solution
A protection and control terminal device equipped with a storage unit that stores applications for its own functions and those of adjacent devices, along with an arithmetic unit that executes these applications in case of abnormalities, enabling automatic restoration without requiring spare hardware resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual intervention is used to repair terminal devices, then system restoration can be achieved, but human and economic burdens increase
Solution Approach 1:
The terminal device automatically detects abnormalities in itself or other terminal devices and executes backup applications without human intervention. The arithmetic unit monitors the operational status of applications and automatically switches to backup applications when abnormalities are detected, enabling the system to restore itself without requiring manual repair operations.
Solution Approach 2:
Backup applications for other terminal devices are stored in advance in the storage unit of each terminal device. This preliminary preparation of backup applications allows the system to immediately restore functionality when an abnormality occurs, eliminating the need for manual intervention and reducing both human burden and economic costs.
2Reliability
If backup applications are stored for each terminal device, then automatic restoration is enabled, but storage requirements increase
Solution Approach 1:
Each terminal device's storage unit is designed to store not only its own application but also backup applications for other terminal devices in the protection and control system. This multi-functionality allows any terminal device to serve as a backup for others, enabling automatic restoration while distributing storage requirements across the entire system rather than requiring dedicated backup hardware for each device.
3Adaptability or versatility
If terminal devices are networked, then system functionality is enhanced, but complexity of maintenance increases
Solution Approach 1:
The arithmetic unit continuously monitors the operational status of applications through feedback mechanisms. When an abnormality is detected in the executed application or in other terminal devices, the system automatically responds by switching to backup applications. This feedback-based automatic monitoring and response mechanism simplifies maintenance by eliminating the need for complex manual diagnostic and repair procedures across the networked system.
Data Source
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AI summary
A protection and control terminal device of an embodiment constitutes a protection and control system that performs protection and control of devices that constitute a power system. The protection and control terminal device of the embodiment comprises: a storage unit that stores a first application that executes functions of the protection and control terminal device, and a second application that constitutes the protection and control system and executes functions of a protection and control terminal device different from said protection and control terminal device; a first calculating unit that executes the first application; and a second calculating unit that executes the second application when an abnormality occurs in said protection and control terminal device or the protection and control terminal device different from said protection and control terminal device.