Power Trading Flow Risk Evaluation for Line Constraint Compliance
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Solution Overview
Problem
The existing electric power transaction intermediation systems fail to ensure that the actual electric power flowing through a line facility conforms to the agreement result, leading to potential breakdowns of line facilities such as transformers or voltage inverters.
Innovation Solution
An electric power agreement system that evaluates a flow plan for an electric power line by calculating an agreement result, flow achievement, and risk, and determines whether the risk-considered flow plan fulfills line constraints, thereby reducing the occurrence of breakdowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electric power transaction intermediation system calculates agreement results without considering line constraints for prosumer trading, then trading flexibility is improved, but line facility reliability deteriorates due to actual power flow deviation
Solution Approach 1:
The system performs preliminary risk calculation based on historical flow achievement data before finalizing the agreement result. The risk calculation unit computes the variation of flow achievement from flow plan in advance, and the line constraint evaluation unit assesses whether the flow plan fulfills line constraint before execution, preventing future line facility breakdowns
Solution Approach 2:
The system introduces a risk calculation unit and line constraint evaluation unit as intermediary components between the agreement result calculation and the actual power trading execution. These intermediaries evaluate the flow plan against line constraints using historical data, acting as a buffer that prevents direct transmission of potentially harmful trading decisions to the line facilities
2Reliability
If the system evaluates line constraint with risk consideration for each line facility, then line facility reliability is improved, but system complexity increases
Solution Approach 1:
The system segments the evaluation process by line facility, calculating risk and evaluating line constraints individually for each line facility rather than applying a uniform evaluation to the entire system. This segmented approach allows targeted reliability improvement while managing overall system complexity through modular processing
3Reliability
If the agreement result is corrected based on line constraint evaluation, then line facility reliability is improved, but trading efficiency deteriorates due to additional calculation steps
Solution Approach 1:
The system applies partial correction to the agreement result by only adjusting the flow plan when the line constraint evaluation indicates a risk of violation. When the evaluation shows the flow plan already satisfies line constraints, no correction is applied, thus maintaining trading efficiency while still improving reliability when needed
Data Source
AI summary
The present disclosure is intended to reduce the occurrence of breakdown of a line facility due to variation between an agreement result and electric power actually flowing through a line. An electric power agreement system includes: an agreement result calculation unit that calculates an agreement result about each customer; a flow achievement calculation unit that calculates a flow achievement for the line facility individually; a flow plan calculation unit that calculates as the flow plan for the line facility individually; a risk calculation unit that calculates a variation of the flow achievement from the flow plan assumed in the future as a risk for the line facility individually on the basis of a variation of the flow achievement from the flow plan in the past; and a line constraint evaluation unit that determines for the line facility individually whether a risk-considered flow plan fulfills line constraint.