Power Distribution Network Planning with Pre-computed Reliability Lookup Tables
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Solution Overview
Problem
Conventional methods for planning power distribution networks fail to efficiently satisfy reliability requirements, leading to high costs and suboptimal solutions due to lengthy computation times and large storage needs, often resulting in networks with low-capacity electrical devices and low loads.
Innovation Solution
Incorporating reliability constraints directly into the planning model for power distribution networks, which includes target functions and constraints such as power balance, radial operation, fault, and reliability index calculations, to optimize the installation of conductors, transformers, and substations, thereby ensuring optimal solutions that meet reliability requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional iterative methods are used for power distribution network planning, then the planning process can be performed, but computation time becomes excessively long and storage requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing reliability index values for different network configurations in a lookup table before the actual planning process. This allows the planning algorithm to directly query pre-computed reliability values without performing iterative reliability assessments during optimization, dramatically reducing computation time while ensuring reliability requirements are met.
Solution Approach 2:
The patent creates a simplified copy or representation of the reliability assessment function through pre-computed lookup tables. Instead of performing complex iterative reliability calculations during the planning optimization, the system uses pre-stored reliability index data that replicates the reliability assessment outcome, enabling fast querying and constraint verification without repeated computational iterations.
2Reliability
If conventional iterative methods are used for power distribution network planning, then the planning process can be performed, but storage requirements become excessively large
Solution Approach 1:
The patent performs preliminary computation of reliability indices for representative network configurations and stores these results in compact lookup tables. This pre-processing step consolidates reliability assessment data into efficient storage formats, reducing the need for storing large amounts of intermediate computational data during the planning process while maintaining the ability to verify reliability constraints.
3Productivity
If reliability constraints are not incorporated into the planning model, then computation is faster, but the resulting network fails to meet reliability requirements
Solution Approach 1:
The patent merges the reliability constraint verification into the planning optimization model by incorporating pre-computed reliability index lookup tables directly into the optimization framework. This integration allows the planner to simultaneously optimize network configuration and verify reliability constraints in a unified process, ensuring reliability requirements are satisfied without requiring separate iterative verification steps.
Solution Approach 2:
The patent uses pre-computed reliability index data as a copied representation of reliability constraints within the planning model. By incorporating these pre-stored reliability values into the optimization process, the system can efficiently query and enforce reliability requirements without performing complex iterative reliability assessments, thus maintaining both planning efficiency and reliability satisfaction.
Data Source
AI summary
The disclosure provides a method for planning a power distribution network, an apparatus for planning a power distribution network, and a storage medium. The method includes: establishing a model for planning the power distribution network, the model including a target function and constraints, the target function for minimizing a cost of the power distribution network when branches and nodes are installed into the power distribution network, the nodes including transformers and substations, the constraints including a power balance constraint of the power distribution network, a power constraint of the branches, a power constraint of the transformers, a radial operation constraint of the power distribution network, a fault constraint, a calculation constraint of indices of a reliability, a constraint of the indices of the reliability, and a logic constraint; and solving the model to determine whether the branches and the nodes are installed into the power distribution network.