Wind turbine generator variable pitch motor extension line testing device based on power supply

Abstract

The utility model belongs to the technical field of testing devices, and particularly relates to a wind turbine generator variable pitch motor extension line testing device based on a power supply, which comprises a power supply extension cable; one end of the variable-pitch motor power line plug and one end of the power supply extension cable are provided with a power supply extension line interface, and the variable-pitch motor power line plug is inserted into the power supply extension line interface; the other end of the variable-pitch motor power supply interface and the other end of the power supply extension cable are provided with a power supply extension line plug which is inserted into the variable-pitch motor power supply interface. According to the utility model, the wind turbine generator variable-pitch motor power supply test extension line is adopted to carry out cross validation on the functions of three variable-pitch devices, and meanwhile, a set of extension line of the variable-pitch control cabinet and the variable-pitch motor electrical connecting line is adopted to adapt to a variable-pitch motor power power line interface to assist maintenance personnel in fault judgment, so that the fault processing time can be shortened, and the maintenance efficiency is improved. And the unit availability and the generating capacity are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing devices, and in particular relates to a testing device for a variable pitch motor extension line of a wind turbine set based on a power supply. Background Art

[0002] Each blade pitch device of the wind turbine pitch system mainly consists of three parts, namely the pitch control part, the pitch motor-reducer part and the pitch bearing. The pitch control system achieves power change by changing the blade angle of attack. The pitch drive motor installed between the blade and the hub drives the slewing bearing to rotate, thereby changing the blade angle of attack, thereby controlling the lift of the blade and achieving control of the torque and power acting on the wind rotor blade;

[0003] By analyzing the reasons for the temporary shutdown of faulty components and systems of various types of wind turbines, it was found that the downtime caused by pitch system failure accounts for a relatively high proportion. Currently, there is no device that can quickly, effectively and clearly check the specific scope of pitch system failure, making it impossible to quickly check the location of the fault point in a short time.

[0004] In order to solve the above problems, the present application proposes a wind turbine variable pitch motor extension line testing device based on a power supply. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a wind turbine variable pitch motor extension line test device based on a power supply, which has the characteristics of stable connection, good quality and meeting signal transmission requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind turbine pitch motor extension cord testing device based on power supply, comprising: a power supply extension cable; a pitch motor power supply cord plug, one end of the power supply extension cable is provided with a power supply extension cord interface, and the pitch motor power supply cord plug is plugged into the power supply extension cord interface; a pitch motor power supply interface, the other end of the power supply extension cable is provided with a power supply extension cord plug, and the power supply extension cord plug is plugged into the pitch motor power supply interface.

[0007] As a preferred test device for a wind turbine pitch motor extension line based on a power supply of the utility model, it also includes a pitch motor, which is electrically connected to a pitch converter, and one end of the pitch motor is provided with a power supply interface for the pitch motor.

[0008] As a preferred embodiment of the utility model, a wind turbine pitch motor extension line testing device based on a power supply also includes a pitch inverter, and one end of the pitch inverter is provided with a pitch inverter output power interface.

[0009] As a preferred test device for a wind turbine pitch motor extension line based on a power supply of the utility model, there are multiple groups of pitch inverters, and the pitch inverters are arranged inside the pitch control cabinet, and the multiple groups of pitch inverters are electrically connected to the multiple groups of pitch motors in a one-to-one correspondence.

[0010] As a preferred test device for a wind turbine pitch motor extension cord based on a power supply of the utility model, a power supply cord is plugged into the output power interface of the pitch inverter, and one end of the power supply cord is provided with a power supply cord plug for the pitch motor.

[0011] As a preferred test device for a wind turbine pitch motor extension cord based on a power supply of the utility model, the power supply extension cord interface and the pitch motor power supply cord plug as well as the power supply extension cord plug and the pitch motor power supply interface are both detachable and pluggable.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model adopts a wind turbine pitch motor power supply test extension line to cross-verify the functions of the three pitch devices, and at the same time, through a set of pitch control cabinets and pitch motor electrical connection line extension lines, adapts the pitch motor power supply line interface, and assists maintenance personnel in fault judgment, which can reduce fault handling time, boarding processing times and labor intensity, improve unit availability and increase power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the connection of the power supply line of the wind turbine pitch motor;

[0015] Figure 2 This is the electrical schematic diagram of the power supply extension cable in the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the power supply extension line interface in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the power supply extension cord plug in the utility model.

[0018] In the figure: 1. Pitch inverter; 2. Pitch inverter output power interface; 3. Pitch motor power cord plug; 4. Power extension cord interface; 5. Power extension cable; 6. Power extension cord plug; 7. Pitch motor power interface; 8. Pitch motor; 9. Pitch control cabinet; 10. Power cord. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] like Figure 1 and Figure 2 As shown;

[0022] A wind turbine variable pitch motor extension line test device based on a power supply, comprising:

[0023] Power supply extension cable 5;

[0024] The power supply line plug 3 of the variable pitch motor, one end of the power supply extension cable 5 is provided with a power supply extension line interface 4, and the power supply line plug 3 of the variable pitch motor is plugged into the power supply extension line interface 4;

[0025] The variable pitch motor power supply interface 7 , the other end of the power supply extension cable 5 is provided with a power supply extension cord plug 6 , and the power supply extension cord plug 6 is plugged into the variable pitch motor power supply interface 7 .

[0026] In this implementation scheme: a wind turbine pitch motor power supply test extension line is used to cross-verify the functions of the three pitch devices. At the same time, a set of pitch control cabinets and pitch motor electrical connection line extension lines are used to adapt the pitch motor power supply line interface to assist maintenance personnel in fault diagnosis. This can reduce fault handling time, boarding processing times and labor intensity, improve unit availability and increase power generation.

[0027] In an optional embodiment, a pitch motor 8 is further included. The pitch motor 8 is electrically connected to the pitch converter 1 , and a pitch motor power supply interface 7 is provided at one end of the pitch motor 8 .

[0028] In an optional embodiment, the pitch converter 1 is further included, and a pitch converter output power interface 2 is provided at one end of the pitch converter 1 .

[0029] In an optional embodiment, there are multiple groups of pitch inverters 1, and the pitch inverters 1 are arranged inside the pitch control cabinet 9, and the multiple groups of pitch inverters 1 are electrically connected to the multiple groups of pitch motors 8 in a one-to-one correspondence.

[0030] In an optional embodiment, a power supply line 10 is plugged into the output power interface 2 of the pitch converter, and a power supply line plug 3 of the pitch motor is provided at one end of the power supply line 10 .

[0031] like Figure 3 and Figure 4 As shown;

[0032] In an optional embodiment, the power supply extension cord interface 4 and the pitch motor power supply cord plug 3 as well as the power supply extension cord plug 6 and the pitch motor power supply interface 7 are both detachably plugged.

[0033] In the present embodiment: because the original wiring length of the wind turbine pitch system cannot realize the cross-verification of the functions of the three pitch devices, the present embodiment adopts the pitch motor 8 power supply test extension line to cross-verify the functions of the three pitch devices, and uses a set of pitch control cabinet 9 and pitch motor 8 electrical connection line extension lines to adapt to the pitch motor 8 power supply line interface to assist maintenance personnel in fault judgment.

[0034] The working principle and use process of the utility model: after the appearance inspection and electrical measurement, no abnormality is found in the pitch motor 8. If it is still judged that there is a problem with the pitch motor 8 reducer of the pitch drive device, the electrical wiring on the second set of pitch motor 8 is disconnected, and the pitch motor 8 power supply extension cable 5 is used to connect the pitch motor power supply line plug 3 of the first set of pitch motor 8 through the second set of pitch control cabinet 9 (the cabinet contains a pitch inverter 1). The pitch control cabinet 9 is connected to the remaining electrical connections of the first set of pitch motor 8, and then a manual start-up test is performed to assist in judging whether there is a problem with the pitch motor 8 reducer of the first set of drive devices. The fault judgment of the second and third drive devices is similar; if it is judged that there may be a problem with the components in the first pitch control cabinet 9, the electrical wiring on the second pitch motor 8 is disconnected, and the power extension cable 5 is used to connect the pitch motor power supply line plug 3 of the second pitch motor 8 through the first pitch control cabinet 9, and the remaining electrical wiring of the first pitch control cabinet 9 and the second pitch motor 8 are connected. Then, a manual propeller start test is performed to assist in judging whether there is a problem with the components in the first pitch control cabinet 9. The fault judgment of the components in the second and third pitch control cabinets 9 is similar.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wind turbine variable pitch motor extension line testing device based on a power supply, characterized in that: include: Power supply extension cable (5); A power supply line plug (3) for a variable pitch motor, one end of the power supply extension cable (5) being provided with a power supply extension line interface (4), the power supply line plug (3) for the variable pitch motor being plugged into the power supply extension line interface (4); A variable pitch motor power supply interface (7), wherein the other end of the power supply extension cable (5) is provided with a power supply extension cable plug (6), and the power supply extension cable plug (6) is plugged into the variable pitch motor power supply interface (7).

2. The wind turbine variable pitch motor extension line testing device based on power supply according to claim 1 is characterized in that: It also comprises a pitch motor (8), the pitch motor (8) being electrically connected to the pitch converter (1), and one end of the pitch motor (8) being provided with a power supply interface (7) for the pitch motor.

3. The wind turbine variable pitch motor extension line testing device based on power supply according to claim 1 is characterized in that: It also comprises a pitch frequency converter (1), one end of which is provided with a pitch frequency converter output power interface (2).

4. The wind turbine variable pitch motor extension line testing device based on power supply according to claim 3 is characterized in that: There are multiple groups of pitch frequency converters (1), and the pitch frequency converters (1) are arranged inside a pitch control cabinet (9). The multiple groups of pitch frequency converters (1) are electrically connected to the multiple groups of pitch motors (8) in a one-to-one correspondence.

5. The wind turbine variable pitch motor extension line testing device based on power supply according to claim 4 is characterized in that: A power supply line (10) is plugged into the variable pitch frequency converter output power interface (2), and one end of the power supply line (10) is provided with the variable pitch motor power supply line plug (3).

6. The wind turbine variable pitch motor extension line testing device based on power supply according to claim 1 is characterized in that: The power supply extension line interface (4) and the pitch motor power supply line plug (3) as well as the power supply extension line plug (6) and the pitch motor power supply interface (7) are both detachably plugged.

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