Current Sensor Support Structure for Power Panel Monitoring
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Solution Overview
Problem
Existing power monitoring systems face challenges in efficiently and cost-effectively monitoring power usage in electrical power distribution systems, particularly with three-phase loads, due to cumbersome installation processes, limited space in power panels, and high expenses associated with current sensors and communication wiring.
Innovation Solution
The system employs a support structure for current sensors that allows for a compact and efficient arrangement within power panels, using wire wound toroidal coils and resistive elements to replace transient voltage suppressors, along with voltage to current converters and multiplexers to minimize measurement errors and reduce the number of wires, enabling effective monitoring of power usage and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional power meters are installed at each load location with voltage connections to wires, then power consumption monitoring of individual loads is achieved, but installation complexity and cost increase significantly
Solution Approach 1:
The patent extracts the voltage sensing function from the traditional power meter installation by utilizing existing voltage present on circuit breaker terminals. Instead of requiring separate voltage connections to each load wire, the system uses the voltage already available at the circuit breaker, thereby eliminating complex wiring while maintaining monitoring capability.
Solution Approach 2:
The patent makes the circuit breaker serve multiple functions: its primary protective function plus a secondary function as a voltage sensing point. By measuring voltage across the circuit breaker terminals, the system uses an existing component for dual purposes, eliminating the need for separate voltage connection infrastructure.
2Measurement precision
If multiple current sensors and power meters are installed to monitor individual loads, then detailed power usage data is obtained, but the space required in power panels increases
Solution Approach 1:
The patent combines multiple monitoring functions into a single centralized power monitor unit. Instead of installing separate power meters at each load location (which would require significant space), the system consolidates all current sensor outputs and voltage measurements into one central device, dramatically reducing the space required while maintaining comprehensive monitoring capability.
Solution Approach 2:
The patent introduces a centralized power monitor as an intermediary device that collects data from multiple current sensors and processes all power consumption information in one location. This intermediary approach allows distributed current sensing with centralized processing, optimizing space utilization in the power panel.
3Loss of information
If communication wiring is provided to each remotely located power meter, then power usage data can be transmitted to a computer network, but installation cost and complexity increase
Solution Approach 1:
The patent consolidates all data transmission needs into a single communication interface at the centralized power monitor. Instead of providing separate communication wiring to each remotely located power meter, the system combines all monitoring data at one location and provides a single communication connection to the network, eliminating redundant wiring while maintaining full data transmission capability.
4Reliability
If transient voltage suppressors are used in current sensor circuits, then voltage spikes are protected against, but voltage drops and measurement errors increase
Solution Approach 1:
The patent replaces the traditional transient voltage suppressor with an alternative protection mechanism that copies or replicates the protective function without the harmful side effects. The circuit configuration provides voltage spike protection through reactive components that suppress transients without introducing the resistive voltage drops associated with traditional suppressors, thereby maintaining measurement accuracy while ensuring reliability.
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
This solution simplifies the installation and operation of power monitoring systems, reduces costs, and enhances measurement accuracy by minimizing voltage drops and errors, while allowing for efficient load balancing across phases.
Implementation Method 1
Each of the current sensors may include a wire wound toroidal coil
Implementation Method 2
Each of the current sensors may include a resistive element associated therewith to convert a transient voltage spike to a usable voltage
Data Source
AI summary
A power monitoring system that reduces the need for transient voltage suppressors while using current transformers on an associated support operating using a current mode.