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High-voltage ride-through control method and device for converter, and storage medium

A control method and converter technology, applied in the direction of circuit devices, AC network voltage adjustment, AC network circuits, etc., can solve problems such as not being able to meet the requirements of high-voltage ride-through load tests, and achieve the effect of meeting the requirements of load tests

Active Publication Date: 2020-09-22
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-voltage ride-through control method in the prior art cannot meet the load test requirements of high-voltage ride-through

Method used

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  • High-voltage ride-through control method and device for converter, and storage medium
  • High-voltage ride-through control method and device for converter, and storage medium

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Embodiment Construction

[0038] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention.

[0039] Embodiments of the present invention provide a high voltage ride through control method and device for a converter, and a storage medium. Adopting the technical solution in the embodiment of the present invention can meet the on-load test requirements during high-voltage ride-through, and ensure that the on-load voltage of the wind power generating set should not be lower than the preset high-voltage ride-through per unit value.

[0040] figure 1 It is a schematic flowchart of a high voltage ride through control method for a converter provided by an embodiment of the present invention. Such as figure 1 As shown, the high voltage ride through control method includes step 101 to step 104 .

[0041] In step 1...

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Abstract

The invention discloses a high voltage ride-through control method and device for a converter and a storage medium. The high voltage ride-through control method comprises the following steps: determining a current working state of the converter; if the current working state of the converter satisfies a preset high voltage ride-through condition, calculating a grid reference voltage according to acurrent grid voltage; calculating a reactive current given reference value according to the grid reference voltage and supplying inductive reactive current for the converter based on the reactive current given reference value; calculating a DC bus voltage given reference value according to the reactive current given value, the active current of the converter and the grid reference voltage, and regulating the DC bus voltage based on the DC bus voltage given reference value so that the port voltage of the converter meets the high voltage ride-through requirement. By adoption of the technical scheme in the embodiment of the invention, the loading test requirement for high voltage ride-through can be met, and the loading voltage of a wind power generator set is ensured not to be lower than a preset high ride-through voltage per-unit value.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a high voltage ride-through control method and device for a converter, and a storage medium. Background technique [0002] The wind power converter is the core component of the grid-connected power of wind turbines. The grid side of the converter converts direct current into fixed-frequency alternating current and feeds it into the grid. When a high voltage occurs in the power grid, the output power of the grid side of the converter is suppressed, the bus voltage rises, and the protection is triggered, which may easily cause batch shutdown of the units and form an impact on the power grid. With the investment of large wind power bases through the DC UHV external transmission mode, the frequency of high-voltage conditions in the power grid has increased, requiring the generator sets to have high-voltage ride-through functions. [0003] At present, when the grid volt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/16
CPCH02J3/16H02J3/386Y02E10/76Y02E40/30
Inventor 武磊
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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