Offshore low-voltage ride-through detection method for wind generating set

A technology for wind turbines and low-voltage ride-through, which is applied in motor generator testing, wind power generation, and AC network voltage adjustment. It can solve problems such as system collapse and cracking, and lower grid voltage drop, and achieve the effect of improving identity

Pending Publication Date: 2021-07-23
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology helps identify different types or versions of equipment used for producing power from an alternating current (AC) source that can be affected differently during its lifespan compared to other sources like fossil fuel generators. By comparing this data against similar devices at regular intervals, it becomes possible to determine which parts are more likely to have been damaged due to environmental factors such as weather conditions or damage caused by machinery.

Problems solved by technology

Technological Problem: Current methods for testing high voltages ride-though capabilities of wind generators cannot effectively prevent damage caused by small changes over time such as tripping out under weak connections between different parts of the machine.

Method used

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  • Offshore low-voltage ride-through detection method for wind generating set
  • Offshore low-voltage ride-through detection method for wind generating set

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Embodiment Construction

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0027] Such as Figure 1-2 As shown, the present invention discloses a method for detecting low-voltage crossing at sea of ​​wind power generating units, comprising the following steps:

[0028] S1. Construct a simulated testing machine system, and calculate the corresponding current-limiting reactance and short-circuit reactance according to the voltage drop to be measured and the simulated testing machine system;

[0029] S2, simulating no-load operation through the simulation testing machine system;

[0030] S3.

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Abstract

The invention discloses an offshore low-voltage ride-through detection method for a wind generating set. The method comprises the following steps of constructing a simulation testing machine system, and calculating corresponding current-limiting reactance and short-circuit reactance according to a to-be-detected voltage drop degree and the simulation testing machine system; simulating no-load operation of the testing machine system; simulating a test point power grid fault, and generating a required voltage drop according to a test standard; the output power of the simulation testing machine system being adjusted to be 10%-30% of the rated power, and a low-voltage ride-through test under a light load being carried out; and S5, adjusting the output power of the simulation testing machine system to 80-95% of the rated power, carrying out a low-voltage ride-through capability test under a heavy load, and recording test data. Based on different operation history and maintenance work of each unit of the wind power plant, similarity between the wind power plant unit and the actual wind power plant unit is calculated, the product identity is improved, an actual state of the actual wind power plant unit is greatly restored, and the method has practical significance and effect on field low voltage ride through detection.

Description

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Claims

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Application Information

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Owner SHANDONG JIANZHU UNIV
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