Pluggable Meter Socket Assembly for Bidirectional DER Isolation
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Solution Overview
Problem
Current electrical power management systems for electric vehicles and distributed energy resources lack efficient and flexible solutions for connecting and managing bidirectional energy flow between vehicles, solar panels, energy storage systems, and the grid, particularly in behind-the-meter applications, leading to challenges in safety, efficiency, and grid stability.
Innovation Solution
A pluggable assembly and meter socket adapter system that includes a housing with power and data interface connectors, allowing for secure and flexible connection of electric vehicles, solar panels, and energy storage systems to the grid, featuring a built-in energy management system for safe isolation, load management, and data transmission to prevent backfeed and optimize energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pluggable assembly with removable connectors is used to connect distributed energy resources to the meter socket adapter, then the ease of installation and maintenance is improved, but the reliability of the electrical connection may deteriorate due to potential loose or intermittent connections
Solution Approach 1:
The system is divided into modular components: the meter socket adapter (MSA) remains fixed and permanently installed, while the pluggable assembly (PA) with connectors can be independently installed, removed, and replaced. This segmentation allows maintenance personnel to access and service the PA without disturbing the permanently installed MSA, improving ease of installation and maintenance while maintaining connection reliability through dedicated connector designs.
2Reliability
If a fixed permanent connection system is used to connect distributed energy resources to the meter socket adapter, then the reliability of the electrical connection is improved, but the ease of installation and maintenance deteriorates due to difficulty in accessing and servicing components
Solution Approach 1:
The pluggable assembly is extracted as a separate, removable component from the fixed MSA. This allows the PA to be independently serviced, inspected, or replaced by maintenance personnel without requiring access to or disturbance of the permanently installed MSA, thereby improving ease of maintenance while maintaining reliable electrical connections through the PA's dedicated connectors.
3Productivity
If bidirectional energy flow capabilities are added to allow distributed energy resources to export power to the grid, then the productivity and energy efficiency are improved, but the safety risks and grid stability concerns worsen due to potential backfeed and uncontrolled energy flow
Solution Approach 1:
The energy management system (EMS) continuously monitors bidirectional energy flow between the distributed energy resources and the utility grid, using feedback control to manage power export. The EMS receives data from sensors measuring voltage, current, and power flow, then adjusts the inverter operation to maintain grid stability and prevent unsafe backfeed conditions while maximizing renewable energy utilization.
4Object-affected harmful factors
If advanced energy management systems with continuous monitoring and control are implemented, then the safety and grid stability are improved, but the device complexity and cost worsen
Solution Approach 1:
The energy management system is designed to perform multiple functions: monitoring bidirectional energy flow, controlling inverter operation, managing load distribution, detecting faults, and communicating with utility operators. By integrating these diverse functions into a single multi-functional EMS platform, the system achieves comprehensive safety and grid stability management without proportionally increasing complexity or cost.
Data Source
AI summary
A system includes a meter socket adapter (MSA) to electrically connect a meter socket and a utility meter, electrical contacts to electrically connect the MSA to the meter socket and the utility meter, and a data circuit to measure an electrical load through the MSA, and a pluggable assembly coupled to the MSA, the pluggable assembly including a housing to be coupled to the MSA housing, at least one of a set of power interface connectors extending from the housing into the MSA housing to connect to the MSA electrical contacts and a data interface connector extending from the housing to removably connect to the MSA data circuit, and at least one of an electrical circuit interface to electrically connect the set of power interface connectors to the electrical circuit and a data circuit interface to electrically connect the data interface connector to the data circuit.