Load Side Voltage Sensing for AMI Meter Fraud Detection
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Solution Overview
Problem
Utility meters lack an effective interface for load side voltage sensing and remote disconnect functionality in an open operational framework, leading to limitations in data transmission, safety, and fraud detection, particularly in Advanced Metering Infrastructure (AMI) systems.
Innovation Solution
The integration of a detection circuit with voltage sensors and a remote disconnect switch, along with bidirectional communications, allows for load side voltage sensing and verification of disconnect/reconnect operations, enhancing data transmission, safety, and fraud detection capabilities within the utility meter's network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional utility meters are used without load side voltage sensing, then the device complexity is low, but the ability to detect fraud and verify disconnect operations is insufficient
Solution Approach 1:
A detection circuit is introduced as an intermediary component between the remote disconnect switch and the load side. This circuit includes voltage sensing capability and communication interface, acting as a mediator that detects voltage presence and transmits this information to the utility system, thereby enabling fraud detection without requiring complex instrumentation throughout the entire system
Solution Approach 2:
The detection circuit is designed to autonomously detect voltage conditions on the load side and automatically transmit this information through bidirectional communication. The system self-monitors its own operational state (disconnect verification) and self-report to the utility system, reducing the need for external monitoring infrastructure
2Object-affected harmful factors
If load side voltage sensing is implemented, then the safety and fraud detection are improved, but the device complexity increases
Solution Approach 1:
The detection circuit serves as a safety intermediary by continuously monitoring voltage presence on the load side and communicating this status to the utility system. This intermediary function enables automatic safety protocols such as verifying proper disconnect before maintenance activities, without requiring complex safety systems throughout the entire metering infrastructure
Solution Approach 2:
The bidirectional communication interface provides real-time feedback about voltage detection status to the utility system. This feedback mechanism enables the utility to monitor safety conditions remotely and respond appropriately, creating a closed-loop safety system that enhances protection without proportionally increasing physical complexity
3Loss of information
If bidirectional communication interface is added for data transmission, then the data transmission capability is enhanced, but the device complexity increases
Solution Approach 1:
The bidirectional communication interface is designed to perform multiple functions: transmitting voltage detection data, receiving control commands for remote disconnect operations, and providing system status information. This multi-functional interface consolidates what could be separate communication channels into a single versatile interface, enhancing data transmission capability while limiting the increase in device complexity
Data Source
AI summary
Disclosed are apparatus and methodologies for providing improved functionality of a meter in a 2-way communications arrangement, such as an Advanced Metering System (AMS) or Infrastructure (AMI). More particularly, the present technology relates to methodologies and apparatus for providing load side voltage sensing for utility meters which preferably are operable with remote disconnect features in an Advanced Metering Infrastructure (AMI) open operational framework. The present subject matter provides enhanced capabilities resulting in improved functionality, increased safety, and greater economy vis-à-vis fraud detection for individual metrology components in an open operational framework. Meters per the present subject matter utilize a detection circuit, which is situated generally downstream of a remote disconnect functionality. Such detection circuit is able to sense whether voltage exists or doesn't exist at such relatively downstream, or load side location. Providing such functionality allows for: (a) verification that a remote disconnect switch did open subsequent to an instruction or command to do so, (b) identification of possible user fraud, as would possibly be reflected by the presence of voltage at a time when the remote disconnect switch is open, (c) verification that the remote disconnect switch did re-close after having been given an instruction or command to close, and (d) verification of lack of voltage present before re-closing such remote disconnect switch, which serves an important safety feature.