Power Supply Line Loss Reduction via Dynamic Voltage Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power supply systems for 5G communication equipment on electric towers face significant power loss and voltage drop due to distance, with existing methods either increasing construction complexity, generating additional losses, or causing voltage compensation errors due to impedance changes over time.
Innovation Solution
A power supply system with a step-up converter, detection circuit, and control unit that sets and adjusts the output voltage based on terminal and modulated currents to accurately calculate and compensate for power line voltage drops without additional equipment, ensuring voltage remains within safe limits and minimizing transmission loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a step-up apparatus is added to reduce transmission current and line loss, then transmission efficiency is improved, but device complexity and construction cost increase
Solution Approach 1:
The patent implements a feedback mechanism where the detector on the electric tower continuously monitors the terminal voltage and communicates with the power system through a communication device. The power system adjusts the output voltage based on the detected terminal voltage to maintain it within the allowable range, thereby reducing line loss while managing the complexity through intelligent control.
Solution Approach 2:
The patent dynamically changes the output voltage parameter of the power system based on load conditions and detected terminal voltage. By adjusting the voltage parameter in real-time, the system optimizes transmission efficiency and reduces line loss without requiring permanent complex infrastructure changes.
2Measurement precision
If a detector and communication device are added to dynamically adjust output voltage, then voltage control precision is improved, but device complexity and construction cost increase
Solution Approach 1:
The patent uses a detector installed on the electric tower to continuously monitor the terminal voltage and communicate this information back to the power system. This feedback loop enables precise voltage control by allowing the power system to adjust its output based on actual terminal conditions, achieving high measurement precision while distributing the complexity across separate functional components.
3Reliability
If a step-down device is added to convert transmitted voltage, then voltage matching is improved, but additional losses are generated and maintenance difficulty increases
Solution Approach 1:
Instead of using a step-down device at the electric tower to reduce voltage, the patent inverts the approach by using a step-up apparatus at the power system to increase voltage before transmission. This inversion reduces transmission current and line loss while avoiding the need for step-down conversion at the remote location, thereby eliminating additional losses and maintenance difficulties.
4Speed
If impedance estimation is used based on power line information, then voltage compensation speed is improved, but measurement precision deteriorates due to impedance changes
Solution Approach 1:
The patent replaces impedance estimation with a direct feedback mechanism where the detector measures the actual terminal voltage and communicates it to the power system. This eliminates the precision errors associated with impedance changes while maintaining fast voltage compensation through real-time feedback and dynamic adjustment of the output voltage.
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 effectively reduces power line transmission loss by accurately calculating and adjusting voltage without measuring impedance, maintaining voltage within safe limits, and avoiding additional equipment or communication devices, thus enhancing efficiency and reliability.
Implementation Method 1
a step-up converter, detection circuit, and control unit that sets and adjusts the output voltage
Data Source
AI summary
A power supply system with line loss reduction supplies power to a load through a power line. The power supply system includes a step-up converter, a detection circuit, and a control unit. The control unit sets a terminal voltage required by the load, controls an output voltage of the step-up converter to be terminal voltage, and acquires an output current corresponding to the terminal voltage to be a present current by the detection circuit. The control unit controls the output voltage to be a modulated voltage, and acquires an output current corresponding to the modulated voltage to be a modulated current by the detection circuit. The control unit adjusts the output voltage to be a first predetermined voltage according to the terminal voltage, the present current, the modulated voltage, and the modulated current.