Voltage Regulator Simulating Reactive Droop for Parallel Generators
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Solution Overview
Problem
Setting up parallel generator systems for uninterrupted power requires adjusting voltage droop in proportion to reactive loads, which is costly and impractical due to the high expense of reactive load banks, making it difficult for technicians to tune generators effectively without expensive equipment.
Innovation Solution
A voltage regulator is used to simulate a reactive droop compensation voltage, allowing for the computation and control of an excitation signal to tune the generator, enabling the use of a resistive load bank to mimic reactive loads and reduce costs associated with reactive load rentals and technician labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reactive load bank is used to tune voltage droop in parallel generator systems, then accurate reactive load sharing can be achieved, but the cost and complexity of the setup becomes prohibitively high
Solution Approach 1:
The patent creates a simulated reactive load using a resistive load bank combined with power electronic circuits that emulate the electrical characteristics of a reactive load bank. This copying approach allows technicians to perform tuning procedures without requiring actual expensive reactive load banks, thereby reducing device complexity while maintaining measurement precision for reactive load sharing calibration
Solution Approach 2:
The patent introduces an intermediary simulated reactive load between the generator and the actual reactive load. This intermediary component allows the generator to be tuned indirectly through simulation, eliminating the need for direct connection to expensive reactive load banks while still achieving accurate reactive droop compensation settings
2Manufacturing precision
If a reactive load bank is rented for field tuning, then proper voltage droop adjustment can be made, but the rental cost and technician labor costs become prohibitively expensive
Solution Approach 1:
The patent enables the generator system to perform its own tuning operation using a simulated reactive load that can be implemented with standard resistive load banks and control circuits. This self-service capability eliminates the need to rent expensive reactive load banks and reduces technician labor costs, while still achieving precise voltage droop adjustment through the simulation methodology
3Quantity of substance
If technicians attempt to tune generators without reactive load banks, then cost is reduced, but the ability to accurately tune reactive droop compensation is lost
Solution Approach 1:
The patent changes the electrical parameters of a resistive load bank through power electronic control to simulate reactive load characteristics. By dynamically adjusting the effective impedance parameters, the system can emulate inductive or capacitive loads without requiring actual reactive components, thereby maintaining tuning capability while using only inexpensive resistive load banks
Data Source
AI summary
Systems, methods, and a voltage regulator are provided for tuning reactive droop compensation of a generator in a parallel power generation system. The voltage regulator is configured to compute a simulated droop compensation voltage for the generator and control an excitation signal to the generator based at least in part on the simulated droop compensation voltage.