Energy Processing Unit for Voltage Regulation at Point of Use
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Solution Overview
Problem
The increasing integration of privately owned and operated Distributed Energy Generation (DEG) devices into low voltage (LV) distribution networks is degrading power quality by causing voltage, current, and frequency aberrations, leading to equipment malfunction, energy wastage, and potential grid disruptions, as these networks were not designed to handle the additional load and complexity.
Innovation Solution
The implementation of an Energy Processing Unit (EPU) at each end consumer's point of use (POU), which tolerates wide ranges of voltage, current, and frequency variations to produce high-quality power, effectively isolating DEG devices from high distribution voltages and ensuring stable power delivery while allowing for increased DEG connections without compromising legacy power standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If more DEG devices are connected to the LV distribution network, then the quantity of energy generation increases, but power quality degrades due to voltage, current, and frequency aberrations
Solution Approach 1:
An Energy Processing Unit (EPU) is introduced as an intermediary device between the DEG devices and the LV distribution network. The EPU includes voltage regulators and power quality management circuits that actively monitor and adjust electrical parameters, filtering out voltage, current, and frequency aberrations before they propagate to the grid. This mediator enables multiple DEG devices to connect while maintaining power quality standards.
Solution Approach 2:
The system dynamically changes electrical parameters (voltage, current, frequency) through the EPU's control circuits. The voltage regulator adjusts output voltage levels, and the power quality management circuits modify current waveforms and frequency stabilization in real-time based on detected aberrations, allowing the network to accommodate variable DEG outputs while maintaining stable grid parameters.
2Power
If voltage is increased to deliver higher electrical power over longer distances, then transmission capability improves, but energy wastage increases due to excessive voltage
Solution Approach 1:
The EPU incorporates dynamic voltage regulation that continuously adjusts voltage levels based on real-time load conditions and distance from the source. Rather than maintaining high voltage throughout the network, the system dynamically optimizes voltage to the minimum necessary level for each specific location and load requirement, reducing resistive losses while maintaining adequate power delivery capability.
Solution Approach 2:
The system changes voltage parameters locally at each EPU based on distance from the power source and instantaneous load demands. This localized parameter adjustment ensures voltage is high enough for effective transmission over distance but not excessively high to cause energy wastage, optimizing the balance between transmission capability and energy efficiency.
3Loss of energy
If voltage is tightly controlled to save energy, then energy savings increase, but equipment may malfunction due to voltage outside legacy standards
Solution Approach 1:
The EPU applies conservation voltage reduction (CVR) by optimizing voltage to the precise level needed for each specific load type and operational condition. The system uses load classification and real-time monitoring to adjust voltage parameters dynamically, reducing voltage to energy-saving levels for continuous operation while maintaining voltage within acceptable tolerances that prevent equipment malfunction.
Solution Approach 2:
The system dynamically switches between different voltage control modes based on load type, duration, and sensitivity. For voltage-sensitive equipment, the EPU maintains tighter voltage control to prevent malfunction. For robust loads, it applies more aggressive voltage reduction for energy savings. This dynamic adaptation resolves the contradiction between energy savings and equipment performance.
4Reliability
If the LV distribution network is upgraded to handle DEG devices, then power quality improves, but device complexity and cost increase
Solution Approach 1:
Rather than upgrading the entire LV distribution network, the solution segments the power quality management function into individual EPU devices at each connection point. Each EPU independently manages its local power quality, eliminating the need for complex network-wide upgrades. This segmentation maintains simplicity at the network level while providing robust local control.
Solution Approach 2:
Each EPU is a self-contained unit that autonomously monitors and corrects power quality issues at its location without requiring centralized control or complex network infrastructure. The device performs self-diagnosis and self-correction, reducing the overall system complexity while maintaining high power quality standards across the distributed network.
Data Source
AI summary
In the present legacy electrical power generation and distribution system, the power quality delivered to end consumers is being degraded by a number of disruptive technologies and legislative impacts; especially with the rapidly increasing myriad of privately owned and operated domestic and commercial distributed energy generation (DEG) devices connected at any point across a low voltage (LV) distribution network. The present invention bypasses this increasing critical DEG problem by offering a solution comprising an energy processing unit (EPU) that is installed at the customer's electrical power point of use (POU). And because of the controlled tightly voltage regulated output of the EPU, significant energy savings can be achieved through dynamic voltage control, utilizing the CVR effect, reduced reactive power demand, and reduced or eliminated peak demand billings.