Dynamic Relay Parameter Configuration for Distribution Feeder Topology
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Solution Overview
Problem
Manual configuration of relay operating characteristics and protection parameters in distribution feeder circuits is complex and time-consuming, especially in complex topologies, leading to suboptimal performance during grid reconfiguration and fault restoration.
Innovation Solution
A computer-implemented system identifies and dynamically reconfigures protection parameters for distribution automation devices based on the current grid topology, ensuring that devices further from the power source trigger protection earlier, thereby optimizing relay coordination and reducing the need for manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual configuration of relay operating characteristics is performed, then correct relay coordination can be achieved, but the process becomes complex and time-consuming especially in complex topologies
Solution Approach 1:
The system enables automatic self-configuration of relay operating characteristics by having the computing device autonomously determine relay settings based on grid topology and fault analysis, eliminating the need for manual configuration while maintaining correct relay coordination
Solution Approach 2:
The patent replaces manual mechanical configuration processes with automated computational methods, using a computing device to calculate and implement relay operating characteristics based on electrical parameters and grid conditions
2Reliability
If manual reconfiguration of parameters is performed after grid reconfiguration, then relay coordination can be maintained, but the complexity increases with feeder topology complexity
Solution Approach 1:
The system automatically detects grid reconfiguration events and self-adjusts relay operating characteristics without requiring manual intervention, with the computing device monitoring grid topology changes and autonomously recalculating appropriate relay settings
Solution Approach 2:
The patent implements a feedback mechanism where the computing device continuously monitors grid conditions and relay performance, automatically adjusting operating characteristics in response to detected changes in grid topology or fault conditions
3Productivity
If dynamic reconfiguration of protection parameters is implemented, then fault isolation efficiency is improved, but system complexity increases
Solution Approach 1:
The patent replaces complex manual calculation and configuration processes with automated computational algorithms that rapidly determine optimal relay settings based on electrical parameters, achieving fast fault isolation without proportional increases in operational complexity
Solution Approach 2:
The computing device serves as an intermediary between grid sensors and relay devices, automatically translating grid conditions into appropriate relay operating characteristics without requiring direct manual intervention or complex operator decisions
Data Source
AI summary
In one embodiment, a system identifies a grid topology of a plurality of distribution automation (DA) devices of a distribution feeder circuit in a power grid, and determines parameters for each of the DA devices of the distribution feeder circuit based on the grid topology e.g., protection parameters such that DA devices further from a power source in the power grid up to a normally open point (NOP) are configured to trigger protection earlier than DA devices closer to the power source. The DA devices may then be configured with respective parameters as determined, and in response to detecting a change of the grid topology, updated parameters may be determined for one or more of the DA devices based on the changed grid topology. The system then reconfigures respective parameters of each of the DA devices that have updated parameters due to the change of the grid topology.