Wireless Power for Secondary Distribution Equipment
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Solution Overview
Problem
Powering secondary electrical distribution equipment in power distribution networks is challenging due to insulation coordination issues between high voltage lines and ground potential devices, making wired connections difficult and battery solutions costly and unreliable.
Innovation Solution
A wireless energy transfer mechanism using resonating structures to transmit electromagnetic power signals between a high voltage line and secondary devices, eliminating the need for wired connections and batteries by converting electromagnetic signals to electrical energy for powering equipment like cutouts and fault indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired power connections are used to power secondary devices, then power supply stability is improved, but insulation coordination becomes difficult due to high potential difference between power line and protective equipment
Solution Approach 1:
The patent replaces the mechanical wired power connection system with a wireless electromagnetic power transmission system. The wireless source on the high voltage line transmits power signals through air to the wireless receiver on the secondary device, eliminating the need for physical wired connections and the associated insulation coordination problems between different voltage levels.
Solution Approach 2:
The patent introduces electromagnetic waves as an intermediary medium to transfer power between the high voltage line and the secondary device. The wireless source converts power to electromagnetic signals, which then propagate through air (the intermediary) to the wireless receiver, avoiding direct electrical connection and insulation issues.
2Device complexity
If batteries are used to power secondary devices, then insulation coordination issues are resolved, but cost and reliability worsen due to remote placement requirements
Solution Approach 1:
The patent enables the secondary device to power itself wirelessly through electromagnetic energy transfer from the high voltage line. The wireless receiver on the secondary device captures electromagnetic signals and converts them to electrical energy, allowing the device to serve its own power needs without relying on external batteries or wired connections.
Solution Approach 2:
The wireless power transmission system serves multiple functions: it provides continuous power supply, eliminates insulation coordination issues, removes the need for batteries, and enables remote device operation. This multi-functional approach replaces the limited battery solution with a more versatile system.
3Weight of moving object
If batteries with small profile and long life are used for remote secondary devices, then device portability is improved, but cost becomes prohibitive
Solution Approach 1:
The patent replaces the battery-based power storage system with a wireless electromagnetic power transmission system. Instead of using heavy, expensive batteries with limited capacity, the system uses lightweight wireless power receivers that continuously harvest energy from electromagnetic signals transmitted from the high voltage line.
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 provides a reliable, cost-effective, and flexible means of powering secondary equipment, reducing insulation coordination issues and eliminating the need for expensive batteries, while enabling remote operation and fault monitoring with minimal transmission interruptions.
Implementation Method 1
a wireless source electrically connected to the first electric cable and adapted to emit an electromagnetic power signal
Implementation Method 2
a wireless receiver electrically connected to the motor module and adapted to receive the electromagnetic power signal and convert the electromagnetic power signal to electricity
Implementation Method 3
A wireless energy transfer mechanism using resonating structures to transmit electromagnetic power signals
Data Source
AI summary
A wireless secondary assembly is disclosed for use in an electrical distribution network. The secondary assembly may include a wireless source electrically connected to a first electric cable and adapted to emit an electromagnetic power signal. A wireless receiver is electrically connected to a secondary device and adapted to receive the electromagnetic power signal and convert the electromagnetic power signal to electricity to power to secondary device.