Variable-Speed Wind Generators for Output Equalization
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Solution Overview
Problem
Power generating systems using natural energy, such as wind or solar, face challenges in maintaining stable output due to weather conditions, leading to fluctuations in system voltages and frequencies, which limits deployment and requires expensive electrical power storage devices for stabilization.
Innovation Solution
Incorporating variable-speed wind power generators to correct output drops in power generators, with a priority order system and AC-DC-AC link configuration, allowing efficient output equalization without the need for expensive storage devices, by determining the number of wind generators based on estimated output fluctuations and assigning higher priority to those in more stable conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical power storage devices are used to stabilize output fluctuations of natural energy power generators, then output stability is improved, but system cost increases significantly
Solution Approach 1:
The invention introduces a variable-speed wind power generator as an intermediary device between the natural energy power generator and the power system. This wind power generator acts as a mediator that provides compensating power during output drops, achieving stabilization without requiring expensive electrical power storage devices. The control unit coordinates the operation of the wind power generator to fill output gaps, effectively using one power generation source to stabilize another.
Solution Approach 2:
The invention replaces expensive electrical power storage devices with relatively low-cost variable-speed wind power generators. Instead of using costly batteries or capacitors to store and release energy for stabilization, the system uses additional wind power generation capacity that can be quickly activated to compensate for output fluctuations, providing a more cost-effective solution.
2Reliability
If the number of variable-speed wind power generators is increased to improve output equalization, then output stability is improved, but device complexity and cost increase
Solution Approach 1:
The invention applies partial action by using only the necessary amount of wind power generator capacity to correct output drops, rather than having all generators operate at full capacity continuously. The control unit activates variable-speed wind power generators only when and to the extent needed to compensate for natural energy generator output fluctuations, optimizing resource utilization and reducing overall system complexity.
Solution Approach 2:
The system stores priority orders in advance in the variable-speed wind power generators before output fluctuations occur. This preliminary arrangement of control priorities allows for rapid response to output drops without requiring complex real-time decision-making algorithms, simplifying the control system while maintaining effective output equalization.
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 approach enables high-quality and stable power supply at a lower cost by using relatively low-cost variable-speed wind power generators to equalize output, reducing the number of generators needed for correction and optimizing performance based on weather conditions.
Implementation Method 1
at least one variable-speed wind power generator for outputting power to correct for a drop in output of the power generator
Data Source
AI summary
Provided is a power generator, including a plurality of wind power generators generating electrical power using wind power energy, and variable-speed wind power generators connected between the power generator and an electrical power system. The variable-speed wind power generators equalize an output of the entire power generating system by outputting power for correcting for a drop in output of the power generator.