CN115929540A - Variable pitch control method of wind generating set - Google Patents
Variable pitch control method of wind generating set Download PDFInfo
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- CN115929540A CN115929540A CN202111486686.6A CN202111486686A CN115929540A CN 115929540 A CN115929540 A CN 115929540A CN 202111486686 A CN202111486686 A CN 202111486686A CN 115929540 A CN115929540 A CN 115929540A
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- variable pitch
- pitch control
- variable
- controller
- pitch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
Provided is a variable pitch control method of a wind generating set. In a wind power plant, since the hub of the pitch system rotates with the impeller and the nacelle is fixed, the conductive slip ring is one of the indispensable components in the wind power plant. The invention comprises the following components: the slip ring comprises a plurality of communication channels, and the communication channels are used for respectively connecting the master control controller with each pitch controller so as to carry out data communication. The variable pitch control method is used for variable pitch control of the wind generating set.
Description
Technical Field
The invention relates to a variable pitch control method of a wind generating set.
Background
Wind turbine generators are devices that convert wind energy into electrical energy. In the control of the wind generating set, the pitch control is a main link. In a wind power plant, since the hub of the pitch system rotates with the impeller and the nacelle is fixed, the conductive slip ring is one of the indispensable components in the wind power plant.
Disclosure of Invention
The invention aims to provide a variable pitch control method of a wind generating set.
The above purpose is realized by the following scheme:
a variable pitch control method of a wind generating set comprises the following steps: the slip ring comprises a plurality of communication channels, and the communication channels are used for respectively connecting the master controller with each of the variable pitch controllers so as to carry out data communication;
the method comprises the following steps: the method comprises the steps that a master control controller determines whether a single-shaft communication fault occurs in a wind generating set;
a main controller of the wind generating set predicts the variable pitch control data of each control period in advance of a preset time period;
the main controller generates a corresponding prediction variable pitch control instruction according to the variable pitch control data and sends the prediction variable pitch control instruction to a variable pitch controller so that the variable pitch controller stores the prediction variable pitch control instruction according to a receiving sequence;
and if the communication of the conductive slip ring is interrupted, the variable-pitch controller sequentially executes the predicted variable-pitch control instructions according to the storage sequence of the predicted variable-pitch control instructions so as to perform variable-pitch operation.
The pitch control method of the wind generating set comprises the following steps of:
the device comprises a prediction variable pitch control instruction receiving unit, a prediction variable pitch control instruction storage unit and a control unit;
when the level of a relay in the first safety chain is detected to be low level and the level of a relay in the second safety chain is detected to be high level, controlling the variable pitch system to execute a pitch-withdrawing operation at a preset speed;
and when detecting that the level of the relays in the first safety chain and the second safety chain is high level, controlling the variable pitch system to execute the pitching operation according to the preset speed.
The pitch control method of the wind generating set, the main controller further comprises:
the real-time pitch angle calculation unit and the real-time pitch control instruction generation unit;
the control unit of the variable-pitch controller is also used for controlling and executing variable-pitch control operation according to the real-time variable-pitch control instruction when the communication of the conductive slip ring is not interrupted, and determining whether the redundant operation mode is due; when the redundant mode of operation expires, determining whether the single-axis communication failure is back to normal.
Has the advantages that:
1. according to the invention, the variable pitch control instruction in the advanced preset time period is stored in advance, so that the blades can be controlled to perform variable pitch operation according to the stored variable pitch control instruction even if the communication of the conductive slip ring is interrupted, the unnecessary halt of the wind generating set can be avoided, and the generating capacity of the wind generating set is improved.
2. The invention can control the pitch adjustment direction of the wind driven generator through the type of the level signal of the safety chain hardware during the redundant operation when communication failure occurs, and avoid the instant triggering failure caused by the pitch adjustment control of the blades.
The specific implementation mode is as follows:
example 1:
a variable pitch control method of a wind generating set comprises the following steps: the slip ring comprises a plurality of communication channels, and the communication channels are used for respectively connecting the master controller with each of the variable pitch controllers so as to carry out data communication;
the method comprises the following steps: the method comprises the steps that a master control controller determines whether a single-shaft communication fault occurs in a wind generating set;
a main controller of the wind generating set predicts the variable pitch control data of each control period in a preset time period;
the main controller generates a corresponding prediction variable pitch control instruction according to the variable pitch control data and sends the prediction variable pitch control instruction to a variable pitch controller so that the variable pitch controller stores the prediction variable pitch control instruction according to a receiving sequence;
and if the communication of the conductive slip ring is interrupted, the variable pitch controller sequentially executes the prediction variable pitch control instructions according to the storage sequence of the prediction variable pitch control instructions so as to perform variable pitch operation.
Example 2:
the method of pitch control of a wind turbine generator system according to embodiment 1, wherein the pitch controller is configured to:
the device comprises a prediction variable pitch control instruction receiving unit, a prediction variable pitch control instruction storage unit and a control unit;
when the level of a relay in the first safety chain is detected to be low level and the level of a relay in the second safety chain is detected to be high level, controlling the variable pitch system to execute a pitch-withdrawing operation at a preset speed;
and when detecting that the level of the relays in the first safety chain and the second safety chain is high level, controlling the variable pitch system to execute the pitching operation according to the preset speed.
Example 3:
according to the pitch control method of the wind generating set in embodiment 1 or 2, the main controller further includes:
the real-time pitch angle calculation unit and the real-time pitch control instruction generation unit;
the control unit of the variable pitch controller is also used for controlling and executing variable pitch control operation according to the real-time variable pitch control instruction when the communication of the conductive slip ring is not interrupted, and determining whether the redundant operation mode is due; when the redundant mode of operation expires, determining whether the single-axis communication failure is back to normal.
Claims (3)
1. A variable pitch control method of a wind generating set is characterized by comprising the following steps: its variable pitch controller includes: the slip ring comprises a plurality of communication channels, and the communication channels are used for respectively connecting the master controller with each of the variable pitch controllers so as to carry out data communication;
the method comprises the following steps: the method comprises the steps that a master control controller determines whether a single-shaft communication fault occurs in a wind generating set;
a main controller of the wind generating set predicts the variable pitch control data of each control period in advance of a preset time period;
the main controller generates a corresponding prediction variable pitch control instruction according to the variable pitch control data and sends the prediction variable pitch control instruction to a variable pitch controller so that the variable pitch controller stores the prediction variable pitch control instruction according to a receiving sequence;
and if the communication of the conductive slip ring is interrupted, the variable pitch controller sequentially executes the prediction variable pitch control instructions according to the storage sequence of the prediction variable pitch control instructions so as to perform variable pitch operation.
2. The pitch control method of a wind turbine generator set according to claim 1, wherein: the pitch controller is configured to:
the device comprises a prediction variable pitch control instruction receiving unit, a prediction variable pitch control instruction storage unit and a control unit;
when the level of a relay in the first safety chain is detected to be low level and the level of a relay in the second safety chain is detected to be high level, controlling the variable pitch system to execute a pitch-withdrawing operation at a preset speed;
and when detecting that the electrical levels of the relays in the first safety chain and the second safety chain are high levels, controlling the variable pitch system to execute the pitching operation at a preset speed.
3. The pitch control method of a wind turbine generator set according to claim 2, wherein: the main controller further comprises:
the real-time pitch angle calculation unit and the real-time pitch control instruction generation unit;
the control unit of the variable-pitch controller is also used for controlling and executing variable-pitch control operation according to the real-time variable-pitch control instruction when the communication of the conductive slip ring is not interrupted, and determining whether the redundant operation mode is due; when the redundant mode of operation expires, determining whether the single-axis communication failure is back to normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486686.6A CN115929540A (en) | 2021-12-07 | 2021-12-07 | Variable pitch control method of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486686.6A CN115929540A (en) | 2021-12-07 | 2021-12-07 | Variable pitch control method of wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115929540A true CN115929540A (en) | 2023-04-07 |
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ID=86698135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111486686.6A Pending CN115929540A (en) | 2021-12-07 | 2021-12-07 | Variable pitch control method of wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115929540A (en) |
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2021
- 2021-12-07 CN CN202111486686.6A patent/CN115929540A/en active Pending
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