Line Reactor Power Switching for Stable Microgrid Loads
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Solution Overview
Problem
Existing power distribution systems face challenges in mitigating instantaneous startup currents, in-rush currents, and power losses from the utility electrical power grid, which can disrupt downstream electrical loads and require remote electrical taps and sensors to manage these changes effectively.
Innovation Solution
A Battery Energy Storage Supplemental Power platform that includes a line reactor cooperating with the utility electrical power grid, fuel cells, and solar power storage devices to mitigate these power changes by maintaining steady state voltage and amperage, allowing the system to transition between power sources safely without disrupting downstream loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery is used without a line reactor in series with the utility electrical power grid, then the system structure is simpler, but the system cannot effectively mitigate instantaneous startup currents, in-rush currents, and power losses from the utility grid
Solution Approach 1:
A line reactor is introduced as an intermediary component between the battery and the utility electrical power grid. The line reactor electrically connects in series with the power supplied from the utility grid, acting as a mediator that mitigates instantaneous startup currents, in-rush currents, and power losses. This intermediary device allows the battery to cooperate with the utility grid while protecting downstream electrical loads from power fluctuations during transitions between power sources.
2Ease of operation
If remote electrical taps and sensors are used to sense power characteristics, then the control range is extended, but the device complexity and measurement precision are reduced
Solution Approach 1:
The patent extracts the sensing function from remote locations and places it directly at the point of power connection. The line reactor and battery system are configured to sense characteristics of power coming from the main power source at the electrical connection point, eliminating the need for remote electrical taps and sensors. This extraction of the sensing function to the connection point improves measurement precision while maintaining control capability.
3Reliability
If the battery directly connects to the utility grid without a line reactor, then the connection is simpler, but the battery cannot cooperate with the grid to mitigate power changes affecting downstream loads
Solution Approach 1:
The line reactor serves as an intermediary that enables the battery to cooperate with the utility grid. By electrically connecting in series with the power supplied from the utility grid, the line reactor allows the battery to mitigate power changes including instantaneous startup currents, in-rush currents, and power losses. This intermediary connection structure ensures stable power transitions while protecting downstream electrical loads.
Solution Approach 2:
The line reactor is configured in advance to mitigate power changes before they affect downstream electrical loads. The system is pre-configured with the line reactor in series with the utility grid connection, enabling it to proactively counteract instantaneous startup currents, in-rush currents, and power losses before they reach the loads, ensuring stable power transitions.
4Productivity
If the system transitions quickly between power sources, then the operational continuity is better, but the power changes and in-rush currents are more severe
Solution Approach 1:
The line reactor acts as an intermediary that enables quick power source transitions while mitigating harmful currents. By being electrically connected in series with the utility grid power supply, the line reactor allows the system to switch between power sources rapidly while simultaneously counteracting instantaneous startup currents and in-rush currents, preventing them from severely affecting downstream loads.
Solution Approach 2:
The line reactor converts the potentially harmful instantaneous startup currents and in-rush currents into manageable power transitions. By being positioned in series with the utility grid connection, the line reactor transforms these harmful current spikes into controlled power changes that can be mitigated by the battery system, allowing for rapid power source transitions without severe current effects on downstream loads.
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
The solution effectively maintains steady state voltage and amperage, resisting changes caused by instantaneous startup currents, in-rush currents, and power losses, ensuring a stable power supply to downstream loads until the electrical controller can safely switch between power sources, thereby preventing power disruptions and maintaining operational continuity.
Implementation Method 1
The line reactor is constructed to temporarily maintain steady state voltage and amperage; and thus, resist changes to the steady state voltage and amperage in supplied electrical power to electrical loads connected downstream of the line reactor
Implementation Method 2
A Battery Energy Storage Supplemental Power platform (BESSP) that includes a line reactor cooperating with the utility electrical power grid, fuel cells, and solar power storage devices
Implementation Method 3
a solar power storage device electrically connects to the line reactor and cooperates with the line reactor
Implementation Method 4
one or more fuel cells electrically connects to the line reactor and cooperates with the line reactor
Data Source
AI summary
A line reactor cooperates with a utility electrical power grid and other power sources. The line reactor electrically connects in series with a power supplied from the utility electrical power grid. The line reactor mitigates power changes. The line reactor cooperates with an electrical controller to change a state of circuit breakers and components in a micro grid to configure a mode of operation of these components to supply electrical power to downstream electrical loads. The line reactor temporarily maintains steady state voltage and amperage supplied electrical power to electrical loads connected downstream of the line reactor in order to safely change the state of the circuit breakers and other components to transition between power sources.