Safety chain system of wind generating set, monitoring method and variable pitch controller
A wind turbine and controller technology, which is applied to the control of wind turbines, wind turbines, and wind energy generation, etc., can solve the problems of feathering shutdown of wind turbines and reducing the safety monitoring accuracy of the safety chain of wind turbines.
Active Publication Date: 2021-01-01
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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Problems solved by technology
In this case, the pitch controller will make a misjudgment and trigger the failure mechanism, resulting in feathering and shutdown of the wind turbine, reducing the accuracy of the safety monitoring of the safety chain of the wind turbine
Method used
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[0037] The characteristics and exemplary embodiments of various aspects of the application will be described in detail below. In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only intended to explain the present application rather than limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.
[0038] The safety chain of the wind turbine is the hardware protection circuit of the wind turbine. Through the on-off of the safety chain, it can be determined whether the fault me...
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The invention discloses a safety chain system of a wind generating set, a monitoring method and a variable pitch controller, and relates to the field of wind power generation. The safety chain systemof the wind generating set comprises variable pitch cabinets and first safety chains, wherein one variable pitch controller is arranged in each variable pitch cabinet, each first safety chain comprises a first relay, each variable pitch cabinet is correspondingly provided with one first relay, each first relay comprises a first coil and a first contact, and each first contact is connected with thecorresponding variable pitch controller; a first monitoring input port of each variable pitch controller is connected with a power supply circuit of the corresponding first coil; and each variable pitch controller is used for obtaining a first voltage signal of the power supply circuit of the corresponding first coil through the corresponding first monitoring input port, and under the condition that the first voltage signals are high-level signals, the wind generating set continues to operate within at least one period of time. According to the embodiment, the accuracy of safety monitoring ofthe safety chains of the wind generating set can be improved.
Description
technical field [0001] The present application belongs to the field of wind power generation, and in particular relates to a safety chain system, a monitoring method and a pitch controller of a wind power generating set. Background technique [0002] The safety chain of the wind turbine is the hardware protection circuit of the wind turbine. In the event that the wind generator set detects a fault affecting the operation of the wind generator set, it will control the safety chain of the wind generator set to disconnect. When the pitch controller detects that the safety chain is disconnected, it will trigger the failure mechanism, and the wind turbine will shut down with feathering, thereby protecting the safety of the wind turbine. [0003] The relay is one of the important components of the safety chain of the wind turbine. Due to the influence of the characteristics of the relay itself and the working environment, the relay may fail, that is, the contacts of the relay ca...
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Patent Timeline
Login to View More IPC IPC(8): F03D7/00H01H47/00
CPCF03D7/00H01H47/002Y02E10/72
Inventor 马磊王大为姚小丽周杰
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP