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High voltage ride through testing device for wind generating set

A technology for testing equipment and wind turbines, which is applied in the direction of motor generator testing, etc., can solve problems such as the inability to simulate high-voltage faults realistically, and the inability to accurately reflect the high-voltage ride-through performance of wind turbines.

Active Publication Date: 2013-12-18
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the high-voltage ride-through test device in the prior art cannot realistically simulate the high-voltage fault of the actual power grid, and cannot accurately reflect the high-voltage ride-through performance of the wind turbine.

Method used

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  • High voltage ride through testing device for wind generating set
  • High voltage ride through testing device for wind generating set
  • High voltage ride through testing device for wind generating set

Examples

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Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0032] figure 1 Schematically shows a high voltage ride through test device for a wind turbine according to an embodiment of the present invention.

[0033] refer to figure 1 According to the embodiment of the present invention, the wind turbine high voltage ride-through test equipment is connected in series between the wind turbine and the power grid. The wind turbine usually adopts a three-phase four-wire system or a three-phase three-wire system. For the sake of clarity and conciseness, figure 1 Only the high-voltage ride-through test equipment for one phase of the wind turbine is shown, and the other two phases are the same as this phase. During the test, there may be a connection relationship between the capacitor banks C1 of each phase of the three phases. The high voltage ride-through test equipment includes: current-limiting reactor group, including ...

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Abstract

The invention provides a high voltage ride through testing device for a wind generating set. The high voltage ride through testing device comprises a current limiting reactor set, a parallel capacitor set C1, controllable circuit breakers CB1 and CB3 and a thyristor T1, wherein the current limiting reactor set comprises an electric reactor and a controllable circuit breaker, the parallel capacitor set C1 comprises a plurality of capacitors and capacitor switches connected with the capacitors, when the capacitor switches are connected, the capacitors in parallel connection with the capacitor switches are connected into a circuit and started, the controllable circuit breaker CB1 is connected to a transformer 10, the controllable circuit breaker CB3 is connected to the wind generating set, input of the parallel capacitor set C1 is changed by controlling connection and disconnection of the thyristor T1, so that voltage of a test point A is changed, and a test of high voltage ride through of the tested wind generating set is achieved. According to the embodiment of the high voltage ride through testing device for the wind generating set, a high voltage fault of a practical power grid can be realistically simulated, and the high voltage ride through performance of the wind generating set can be accurately reflected.

Description

technical field [0001] The invention relates to a high-voltage ride-through test device, in particular to a high-voltage ride-through test device for a wind power generating set. Background technique [0002] With the increasing proportion of wind power generation in the power system, the impact of wind power generation system on the power grid can no longer be ignored. Especially for the large-scale centralized connection of wind power in China, once the grid fails and the terminal voltage of the wind turbine (machine terminal voltage) exceeds a certain limit, the wind turbine will automatically disconnect from the grid, resulting in fluctuations in grid voltage and frequency. Seriously affect the safe and stable operation of the power grid. [0003] For wind turbine manufacturers, it is necessary to prove that the wind turbine fully meets the requirements of the power grid standard for high voltage ride through (high voltage ride through generally refers to when the power...

Claims

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Application Information

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IPC IPC(8): G01R31/34
Inventor 王海龙乔元
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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