Decentralized Voltage Control for Distribution Segments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional distributed control schemes for electrical distribution systems effectively maintain voltage within acceptable limits but fail to optimize other operational parameters such as active power losses and power factor, and do not ensure uniform voltage across segments.
Innovation Solution
A decentralized coordinated control system using a controller with network interface and data processing circuitry that simulates various equipment configurations to minimize voltage deviations, controls equipment like load tap changing transformers and distribution capacitor banks to optimize voltage, power factor, and reduce power losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional distributed control scheme is used to maintain voltage within acceptable limits, then voltage stability is improved, but optimization of operational parameters (active power losses, power factor, voltage flatness) deteriorates
Solution Approach 1:
The electrical distribution system is divided into multiple segments, with each segment equipped with its own controller that autonomously performs simulations and determines optimal equipment configurations. This segmentation enables localized optimization of operational parameters while maintaining overall system voltage stability through coordinated control across segments.
Solution Approach 2:
Each controller performs simulations of various equipment configurations before implementing control actions. By evaluating multiple scenarios in advance and selecting the optimal configuration, the system proactively optimizes operational parameters such as minimizing active power losses and improving power factor before deviations occur, rather than reacting to problems after they arise.
2Reliability
If conventional distributed control scheme is used to maintain voltage within acceptable limits, then voltage stability is improved, but voltage flatness across segments deteriorates
Solution Approach 1:
Each controller receives real-time measurements from its segment and uses this feedback to perform simulations and adjust equipment configurations. The controllers continuously monitor voltage conditions and make coordinated adjustments to maintain voltage flatness across all segments while ensuring voltages remain within acceptable stability limits.
Solution Approach 2:
The system dynamically changes operational parameters of equipment such as capacitor bank configurations and transformer tap positions based on simulated outcomes. By adjusting these parameters in response to measured conditions, the system optimizes voltage flatness across segments while maintaining overall voltage stability within prescribed limits.
3Loss of energy
If decentralized coordinated control with simulations is implemented to optimize operational parameters, then active power losses are reduced, but device complexity increases
Solution Approach 1:
Each segment controller is self-sufficient, performing its own simulations and determining optimal equipment configurations without requiring complex centralized coordination. This self-service capability reduces the overall system complexity by distributing the computational burden and decision-making authority to individual segment controllers that autonomously optimize their local configurations to minimize active power losses.
4Adaptability or versatility
If decentralized coordinated control with simulations is implemented to optimize operational parameters, then power factor is enhanced, but device complexity increases
Solution Approach 1:
The controllers perform simulations of various equipment configurations in advance to predict outcomes before implementation. By evaluating multiple scenarios beforehand and selecting the configuration that optimizes power factor, the system achieves enhanced adaptability without requiring complex real-time coordination, as the optimal configuration is determined through preliminary simulation and selection.
Data Source
AI summary
Devices and methods for the decentralized, coordinated control of the voltage of an electrical distribution system are provided. For example, a controller may include a network interface and data processing circuitry. The network interface may receive first measurements associated with a segment of an electrical distribution system and transmit a control signal configured to control equipment of the segment of the electrical distribution system. The data processing circuitry may run digital simulations of the segment of the electrical distribution system in various equipment configurations, selecting from among the various equipment configurations an equipment configuration that is expected to cause the voltage deviation of the segment to approach a desired value. The data processing circuitry then may generate the control signal, which may cause the equipment of the segment of the electrical distribution system to conform to the equipment configuration.