Control device and method for low-temperature start-up and operation of wind power generating set

A technology for wind turbines and control devices, which is applied to the control of wind turbines, wind turbines, and wind power generation. It can solve problems such as damage to the PLC system, shutdown of wind turbines, and impacts on the power generation and work efficiency of wind turbines to improve work efficiency. efficiency effect

Active Publication Date: 2017-10-24
BEIJING ETECHWIN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the minimum operating / storage temperature of the PLC system, the core component of the main control cabinet, is -25°C, and this temperature limit cannot be met in most areas in the northwest. When the wind turbine starts in such a low-temperature environment, it may cause damage to the PLC system. damage, and even cause the wind turbine to shut down, thereby affecting the power generation and work efficiency of the wind turbine

Method used

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  • Control device and method for low-temperature start-up and operation of wind power generating set
  • Control device and method for low-temperature start-up and operation of wind power generating set
  • Control device and method for low-temperature start-up and operation of wind power generating set

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Experimental program
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Effect test

Embodiment 1

[0023] figure 1 The circuit diagram of an embodiment of the control device for the low-temperature start-up and operation of the wind power generating set provided by the present invention, as figure 1 As shown, the control device for low-temperature start-up and operation of the wind power generating set includes: a control device connected in parallel between the first power supply terminal (such as the L terminal of 230V AC voltage) and the second power supply terminal (such as the N terminal of 230V AC voltage) branch, heating branch and power supply branch. Wherein, the power supply branch is used to supply power to the controller of the wind turbine (such as outputting 24V DC voltage).

[0024] Specifically, the control branch includes a temperature monitor B1, electromagnetic control parts A1-A2 of the first electromagnetic switch device K1, and electromagnetic control parts A3-A4 of the second electromagnetic switch device K2; the first terminal 41 of the temperature ...

Embodiment 2

[0033] Figure 2a and Figure 2b In combination, it is a circuit diagram of another embodiment of the control device for the low-temperature start-up and operation of the wind power generating set provided by the present invention, which can be regarded as figure 1 A specific implementation of the illustrated apparatus embodiment. Such as Figure 2a and Figure 2b As shown, this embodiment and figure 1 The difference of the illustrated embodiment is that a first switching device is added in the control branch, the first switching device is connected between the third terminal of the temperature monitor B1 and the first power supply terminal, and at the first terminal of the temperature monitor B1 It is turned on when the end and the third end are turned on. Specifically, the first switch device can be the switch part 23-24 of the second electromagnetic switch device K2; at the same time, a second switch device K3 is also added in the control branch to ensure that the powe...

Embodiment 3

[0048] image 3 It is a flow chart of an embodiment of the control method for the low-temperature start-up and operation of the wind power generating set provided by the present invention. The control method can be composed of figure 1 , Figure 2a and Figure 2b The control device of the illustrated embodiment is implemented. Such as image 3 As shown, the control method includes:

[0049] S301. When the ambient temperature in the control cabinet of the wind turbine is lower than a first preset temperature, control the heater to start heating the temperature in the control cabinet.

[0050] S302. When the ambient temperature in the control cabinet is equal to the first preset temperature, control the heater to stop heating, and start the power supply to supply power to the controller in the control cabinet.

[0051] Further, the step of starting the power supply to supply power to the controller in the control cabinet includes: after the power supply is started, controll...

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PUM

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Abstract

The invention provides a low-temperature starting and running control device and method for a wind generating set. The control device comprises a control branch circuit, a heating branch circuit and a power supply branch circuit, wherein the control branch circuit, the heating branch circuit and the power supply branch circuit are connected between a first power source end and a second power source end in parallel. The control branch circuit comprises a temperature monitor, an electromagnetic control part of a first electromagnetic switch device and an electromagnetic control part of a second electromagnetic switch device. The first end of the temperature monitor is connected with the first power source end, and the second end and the third end of the temperature monitor are connected with the electromagnetic control part of the first electromagnetic switch device and the electromagnetic control part of the second electromagnetic switch device respectively. The electromagnetic control part of the first electromagnetic switch device and the electromagnetic control part of the second electromagnetic switch device are further connected with the second power source end. The heating branch circuit comprises a heater and a switch part of the first electromagnetic switch device which are connected in series. The power supply branch circuit comprises a power source and a switch part of the second electromagnetic switch device which are connected in series. According to the low-temperature starting and running control device and method in the technical scheme, safe starting and stable running of the wind generating set in the low-temperature environment are achieved, and the working efficiency of the wind generating set is effectively improved.

Description

technical field [0001] The invention relates to the field of power electronics technology, in particular to a control device and method for low-temperature start-up and operation of a wind power generating set. Background technique [0002] At present, wind power generation technology is becoming more and more mature, and a large number of wind turbines (referred to as "wind turbines") have been installed and operated. In different regions, wind turbines will face different environments, such as higher or lower temperatures, higher Humidity, large sandstorms, etc. will have different effects on the normal operation of the wind turbine, and the lower temperature can easily damage the control system of the wind turbine. [0003] The control system of wind turbines mainly includes main control cabinets, engine room cabinets, pitch cabinets, converter cabinets, etc., which are generally referred to as control cabinets. The main components are electrical, microelectronic and powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 姚顺
Owner BEIJING ETECHWIN ELECTRIC
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