Detecting Energy Theft Using Existing Meter Voltage Data
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Solution Overview
Problem
Existing methods for detecting energy theft in electric utilities require additional hardware installation at distribution transformers, which is costly and inefficient, and do not effectively address the issue without additional meters.
Innovation Solution
A system and method that utilize existing electric meters at customer premises to detect energy discrepancies by estimating resistance and comparing expected and actual voltage readings, determining line losses, and identifying potential energy theft without the need for additional hardware beyond what is already installed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional meters are installed at distribution transformers to detect energy theft, then detection reliability is improved, but device complexity and cost increase
Solution Approach 1:
The existing electric meters at customer premises perform dual functions: their original measurement function and the additional function of providing data for energy theft detection. The meters self-generate the measurement data needed for detection without requiring separate dedicated detection hardware at transformer locations.
Solution Approach 2:
The existing electric meters are made multi-functional by using them both for customer billing measurements and for energy theft detection measurements. The same meter hardware serves multiple purposes, eliminating the need for separate dedicated detection meters.
2Measurement precision
If additional meters are installed at distribution transformers to detect energy theft, then detection precision is improved, but manufacturing cost increases
Solution Approach 1:
The system utilizes the measurement capabilities that already exist at customer premises through existing meters. These meters self-provide the precise measurement data needed for detection, eliminating the need to manufacture and deploy additional expensive metering hardware at transformer locations.
Solution Approach 2:
Instead of physically installing additional meters at transformers, the system creates a virtual copy of the measurement function by collecting and analyzing data from existing meters. The measurement capability is replicated through data aggregation and analysis rather than through additional physical hardware.
3Device complexity
If existing meters are used to detect energy theft without additional hardware, then device complexity is reduced, but detection capability may be compromised
Solution Approach 1:
The detection function is segmented into multiple independent measurement points at customer premises rather than relying on a single centralized measurement. By collecting data from multiple existing meters and analyzing their relationships, the system achieves reliable detection without additional hardware.
Solution Approach 2:
A server acts as an intermediary that collects data from existing meters, performs the detection analysis, and generates results. This intermediary processing layer enables reliable energy theft detection by coordinating information from multiple existing meters without requiring additional measurement hardware at transformers.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables effective detection of energy theft by analyzing voltage and current data from existing meters, reducing the need for extra hardware and improving operational efficiency in energy distribution systems.
Implementation Method 1
The server estimates the resistance along the electrical line located the farthest from the transformer
Implementation Method 2
The server can determine the existence of line loss along the second electrical line if there is a difference between the expected voltage and the actual voltage readings
Data Source
AI summary
The present invention relates generally to detecting energy theft within an energy distribution system and more particularly to systems and methods for detecting energy discrepancies in voltages and/or currents reported by electric meters present in a distribution circuit, without requiring installation of additional hardware at the transformer. Typically, the location of each of at least two meters is determined with respect to a transformer. The line resistances within the distribution circuit are determined starting with a line resistance farthest from the transformer. Estimated line voltages are determined for at least one electric meter using the estimated line resistances, and the estimated voltages are compared to actual voltage readings for the at least one electric meter. The existence of line loss is determined based on this comparison.