Mobile Wind Turbine Grid Adaptability Test System
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Solution Overview
Problem
Current technologies lack a reliable method for testing wind turbines' power grid adaptability, especially in weak grid areas, as laboratory or factory tests cannot accurately simulate real-world parallel operation conditions, and there is a need for field testing equipment that can assess adaptability based on actual operation.
Innovation Solution
A mobile test system comprising a grid turbulence generator and integrated measurement-control device, connected by optical fiber, which simulates grid disturbances and collects data to evaluate wind turbines' power grid adaptability, featuring modular low and high frequency disturbance generators and a remote monitoring system for real-time analysis and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laboratory simulation or factory test is used for wind turbine parallel operation testing, then testing can be conducted in controlled environment, but it cannot accurately reflect real parallel operation characteristics
Solution Approach 1:
The patent introduces a grid turbulence generator as an intermediary device between the wind turbine and the actual power grid. This generator simulates real grid disturbances (voltage deviations, frequency variations, unbalance) in a controlled manner, allowing accurate adaptability testing without requiring actual grid connection during tests. The intermediary device bridges the gap between controlled laboratory conditions and real-world grid operations.
2Measurement precision
If field test equipment is deployed for wind turbine power grid adaptability testing, then real operation characteristics can be assessed, but the equipment complexity and installation difficulty increase
Solution Approach 1:
The test system is segmented into three independent modules: (1) grid turbulence generator for disturbance simulation, (2) measurement device for data acquisition, and (3) evaluation device for adaptability assessment. Each module performs a specific function and can be independently configured or replaced. This segmentation reduces overall system complexity while maintaining measurement precision through specialized functionality in each module.
Solution Approach 2:
The patent replaces complex mechanical field testing with an electrical simulation approach. Instead of physically connecting test equipment directly to the power grid (which would require complex isolation and safety mechanisms), the system uses electrical signal simulation through the grid turbulence generator to replicate grid conditions, significantly simplifying the test setup while maintaining evaluation accuracy.
3Reliability
If direct connection between test device and power grid is made, then real grid disturbances can be measured, but the test device may interfere with or be damaged by the grid
Solution Approach 1:
The grid turbulence generator serves as a protective intermediary between the test equipment and the power grid. It synthesizes grid disturbances electrically without requiring direct physical connection to the grid during testing. This eliminates the risk of grid disturbances damaging sensitive test equipment while still providing authentic disturbance characteristics for evaluation.
Solution Approach 2:
Instead of directly measuring actual grid disturbances (which would expose equipment to harmful grid conditions), the system creates accurate electrical copies of these disturbances through the grid turbulence generator. The copied disturbance signals replicate real grid behavior (voltage sags, swells, frequency variations) without containing the harmful electrical characteristics of the actual grid, thus protecting the test equipment.
Data Source
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AI summary
This invention relates to the new energy access and control field, in particular, relates to a kind of test system for mobile wind turbines power gird adaptability, which includes the grid turbulence generator and the integrated measurement-control device connected by the optical fiber, the grid turbulence generator connects between the medium voltage power gird and the wind turbines step-up transformer high voltage side; The integration of grid turbulence generator and integrated measurement-control device is installed in the container; The container includes the cooling system inside, said cooling system includes water cooling device and air cooling device. This invention can generate online real simulation normal power grid voltage deviation, frequency variation, three-phase voltage unbalance, voltage flicker and common grid disturbances in wind turbines step-up transformer high voltage side, collects and analyzes the real running data of the wind turbines, and processes tests and evaluations for the wind turbines power gird adaptability. The mobile structure facilities the transportation and installation between different wind farms, solved the field test and inspection problem of the wind turbines power gird adaptability under the condition of complex topography and transportation.