Controllable Main Breaker for Fast Smart Grid Isolation

Solution Overview

Problem

Existing mechanisms for isolating solar battery systems from the grid are labor and time intensive to install, requiring significant electrical work.

Innovation Solution

A smart main breaker that provides both safety functionality and controllable actuation, allowing for efficient isolation and reconnection from the grid without the need for new panel installations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing mechanisms for isolating solar battery systems from the grid are used, then grid isolation can be achieved, but installation is labor and time intensive requiring significant electrical work

Engineering Contradiction:

Improvegrid isolation capabilityVSAvoidinstallation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines the grid isolation relay functionality with the main circuit breaker into a single integrated device. This merging eliminates the need for separate relay installations and complex wiring, reducing installation time and labor while maintaining reliable grid isolation capability for solar battery systems

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The main breaker is designed to perform multiple functions: traditional circuit protection plus controllable grid isolation. By making the breaker universal, it eliminates the need for dedicated isolation relays and reduces the number of components required, thereby simplifying installation while ensuring reliable grid disconnection

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If existing mechanisms for isolating solar battery systems from the grid are used, then grid isolation can be achieved, but installation requires significant electrical work

Engineering Contradiction:

Improvegrid isolation capabilityVSAvoidinstallation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the grid isolation relay functionality with the main circuit breaker into a single integrated device. This merging eliminates the need for separate relay installations and complex wiring, reducing installation time and labor while maintaining reliable grid isolation capability for solar battery systems

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The main breaker is designed to perform multiple functions: traditional circuit protection plus controllable grid isolation. By making the breaker universal, it eliminates the need for dedicated isolation relays and reduces the number of components required, thereby simplifying installation while ensuring reliable grid disconnection

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250038520A1Smart grid interface relay and breaker

Publication Date: 2025.01.30 LUNAR ENERGY INC

AI summary

A controllable main breaker includes a main breaker sized to fit within an existing panel slot of an electrical panel. The main breaker comprises a trigger to open the main breaker in response to a thermal fault or overcurrent event. The controllable main breaker further includes an auxiliary shell sized to fit within at least one adjacent breaker slot. The auxiliary shell includes a controllable actuator that mechanically opens the main breaker.