Coupling Layout for Modular Backup Power Line Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing emergency current systems face complexity and high costs due to varied country-specific guidelines and standards, requiring large disconnectors when consumers, generators, and backup systems are in the same supply line, and stricter grid parameter limits lead to unnecessary disconnections.
Innovation Solution
A local energy supply system with separate transmission lines for consumers and energy stores, using a coupling device with switches and a coupling element that includes grounding and phase connecting apparatuses, allowing for modular adjustment to regional conditions and enabling independent operation during grid failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If consumers, generators, and backup systems are arranged in the same supply line, then the system structure is simplified, but the disconnector must be dimensioned significantly larger to handle total maximum power
Solution Approach 1:
The patent divides the supply line into separate transmission lines: a first transmission line for consumers and a second transmission line for energy stores and grid connection. This segmentation allows disconnectors to be sized for individual line requirements rather than total system power, reducing the power rating requirement for each disconnector while maintaining structural organization.
2Reliability
If stricter limits on grid parameters are applied to feed equipment, then grid safety is improved, but unnecessary disconnections occur even when consumers can continue operating
Solution Approach 1:
By separating feed equipment onto its own transmission line (second transmission line) with its own disconnector (second disconnector), the system allows independent disconnection of feed equipment when grid parameter limits are exceeded, while consumers on the first transmission line can continue operating through the coupling device without being affected by feed equipment disconnection.
3Adaptability or versatility
If country-specific guidelines and standards are complied with using traditional backup systems, then regulatory compliance is achieved, but system complexity and costs increase due to enormous range of product variants
Solution Approach 1:
The coupling device serves multiple functions: it connects consumers to the grid during normal operation, enables island mode operation when grid connection is lost, and allows flexible configuration for different country-specific requirements. This multi-functionality reduces the need for entirely different product variants for different regulatory environments.
Solution Approach 2:
The system dynamically adapts to different operating conditions and regulatory requirements through controllable switches and disconnectors that can be configured for different modes (grid-connected, island mode, feed equipment connection). This dynamic configurability allows a single base design to serve multiple country-specific guidelines without requiring separate product variants.
Data Source
AI summary
A local power supply system having a grid transfer point for the connection of an energy supply grid has a first transmission line for transmitting electrical energy from the grid transfer point to a first terminal for connecting an arrangement of consumers, and a second transmission line for transmitting electrical energy between the grid transfer point and a second terminal for connecting an arrangement of energy stores. A first disconnector is arranged in the first transition line between the grid transfer point and the first terminal, and a second disconnector is arranged in the second transmission line between the grid transfer point and the second terminal. A coupling device, which electrically connects the first terminal and the second terminal, has a first switch and a second switch connected in series thereto, wherein a coupling element is arranged between the two switches connected in series, which coupling element has a grounding apparatus, a phase connection apparatus, a neutral conductor connection apparatus, a connection to a diesel generator and/or an apparatus for generating a neutral conductor potential. The disclosure also relates to a method for operating such a system.