Charger-Discharger Selection for Reliable VPP Inspection Scheduling
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Solution Overview
Problem
Existing maintenance and inspection schedules for storage battery units in power systems are unreliable and may not be performed within a predetermined period, especially when power generation is low.
Innovation Solution
A maintenance and inspection apparatus that selects chargers and dischargers based on discharge execution lists and state availability, updates these lists after testing, and ensures equal power balance across the system to reliably perform maintenance and inspections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If maintenance and inspection schedules are based on estimated power generation amounts, then maintenance planning can be performed, but maintenance and inspections cannot be reliably performed within a predetermined period when power generation is low
Solution Approach 1:
The system implements feedback by monitoring the actual discharge execution status of each charger/discharger and comparing it with the maintenance schedule requirements. The processor continuously updates the discharge execution list based on actual test charge/discharge results, enabling real-time adjustment of maintenance schedules to ensure reliability regardless of power generation conditions
Solution Approach 2:
The system performs preliminary actions by pre-planning maintenance schedules based on predicted power generation amounts and pre-identifying target charger/dischargers for maintenance. The discharge execution list is prepared in advance with expected maintenance timing, allowing the system to proactively ensure maintenance occurs within the predetermined period even before actual power generation data is available
2Ease of operation
If maintenance schedules are generated based on predicted power generation, then maintenance planning is possible, but the schedules may not be executed within the predetermined period
Solution Approach 1:
The system uses feedback by continuously monitoring actual discharge execution results and comparing them with the planned maintenance schedule. The processor updates the discharge execution list based on actual test charge/discharge outcomes, enabling dynamic adjustment of maintenance schedules to ensure execution within the predetermined period while maintaining ease of operation
Solution Approach 2:
The maintenance schedule is made dynamic through continuous updates of the discharge execution list. The system adapts the maintenance timing and target selection based on actual power generation patterns and discharge execution results, transforming the rigid predetermined schedule into a flexible plan that guarantees execution while remaining easy to operate
3Reliability
If test charge/discharge is performed for maintenance and inspection, then charger/discharger reliability is verified, but power balance in the system may be disrupted
Solution Approach 1:
The system applies partial action by performing test charge/discharge operations on only one selected target charger/discharger at a time rather than all units simultaneously. This partial testing approach verifies reliability of individual units while minimizing disruption to overall system power balance
Solution Approach 2:
The processor acts as an intermediary by carefully selecting which charger/discharger to test based on current system conditions and power balance requirements. The selection process mediates between the need for reliability verification and the need to maintain power balance, choosing targets that minimize system disruption
Data Source
AI summary
A maintenance and inspection apparatus for performing maintenance and inspection in VPP, includes a processor to select a charger/discharger to be maintained and inspected from among a plurality of chargers and dischargers based on a discharge execution list, in which a time elapsed from a previous discharge with respect to each of the chargers and dischargers, and a charger/discharger state list, which indicates an available state for each of the chargers and dischargers, and update, after charging/discharging by the charger/discharger to be maintained and inspected, updates the discharge execution list by adding an execution result of test charge/discharge by the charger/discharger to be maintained and inspected.