Integrated Transmission Distribution Network Dispatch Model
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Solution Overview
Problem
The integration of large-scale distributed renewable energy resources into distribution networks leads to power mismatch issues between transmission and distribution networks, and the lack of global optimal solutions due to separate operation and private operation information between the two networks.
Innovation Solution
A dispatching method and device for an integrated transmission and distribution network that establishes a dispatch model with an objective function to minimize total generation cost, using multi-parametric programming to solve for dynamic dispatch parameters and optimize power dispatch across both networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional separate dynamic dispatch is conducted for transmission network and distribution network, then operation simplicity is maintained, but power mismatch problem occurs at the boundary between networks
Solution Approach 1:
The patent merges the separate transmission network dispatch and distribution network dispatch into a unified integrated transmission and distribution network dispatch system. This integration allows coordinated optimization of power flow across both networks, eliminating the power mismatch problem that occurs at network boundaries when dispatching separately, while maintaining operational simplicity through centralized control.
2Adaptability or versatility
If transmission network and distribution network are operated by their own dispatch centers respectively, then operational independence is maintained, but global optimal solution cannot be achieved
Solution Approach 1:
The patent segments the dispatch system into hierarchical layers: upper-level integrated dispatch that formulates global optimization models, and lower-level execution that implements specific dispatch actions. This segmentation allows the system to achieve global optimal solutions through coordinated optimization while maintaining operational independence through modular implementation and clear division of responsibilities between different dispatch centers.
3Adaptability or versatility
If large scale distributed renewable energy resources are integrated into distribution networks, then energy sustainability is improved, but power mismatch and unpredictability increase
Solution Approach 1:
The patent implements feedback mechanisms where the integrated dispatch system continuously monitors power generation from distributed renewable energy resources and load demands, then dynamically adjusts dispatch strategies. The system uses real-time information feedback to coordinate between transmission and distribution networks, balancing the unpredictability of renewable energy integration while maintaining power stability and preventing mismatch at network boundaries.
Data Source
AI summary
The present disclosure provides a dispatching method and a dispatching device for an integrated transmission and distribution network. The integrated transmission and distribution network includes a transmission network and at least one distribution network. The method includes: establishing a dispatch model of the integrated transmission and distribution network, in which dispatch model includes an objective function and constraints, the objective function is a minimizing function of a total generation cost of the transmission network and the at least one distribution network under the constraints; solving the dispatch model to obtain dynamic dispatch parameters for the integrated transmission and distribution network; and dispatching the integrated transmission and distribution network according to the dynamic dispatch parameters.