Variable pitch process loading test system

Abstract

The invention discloses a variable pitch process loading test system, which comprises a simulation main control cabinet, an energy feedback unit cabinet, an F5 control cabinet and a twin trawling platform, according to the invention, the loading test system is integrated in three universal power distribution cabinets, namely the simulation main control cabinet, the energy feedback unit cabinet and the F5 control cabinet, so that the system failure rate is effectively reduced, and the maintenance is convenient; meanwhile, a peripheral load thermal resistor is removed, the electric quantity generated during loading is fed back to a main loop by using an energy feedback unit, the electric energy is recycled, the loss of the electric energy is reduced, and the electric energy used during the test of the variable pitch cabinet is reduced; the mechanical part is mainly integrated in the twin trawling platform, the occupied area is small, and installation is easy.

Description

Technical Field

[0001] The invention relates to the technical field of variable pitch process loading test, and in particular to a variable pitch process loading test system. Background Art

[0002] With energy depletion and environmental pollution becoming increasingly serious, wind power generation has become an important way of green renewable energy. In the international environment where the wind power industry is booming, the level of wind power generation is constantly improving; however, due to the influence of the environment, natural factors, weather conditions, etc., on-site experiments are difficult. For example, the wind speed cannot be changed freely, and some extreme tests under high wind speeds can only be achieved in very rare cases.

[0003] In the traditional variable pitch process loading test system, when the load is loaded, the loading motor will generate electricity due to reverse rotation, and the external load thermal resistor is mostly used for discharge. The electric energy is not recycled, resulting in the loss and waste of electric energy. Secondly, the installation of the thermal resistor requires a separate distribution cabinet, which occupies a large space and has complicated wiring. In addition, the temperature of the resistor is high when it discharges, and the risk factor is relatively high. Summary of the invention

[0004] In order to solve the above technical problems, the technical problem to be solved by the present invention is to provide a variable pitch process loading test system.

[0005] To achieve the above-mentioned purpose, the present invention provides a variable pitch process loading test system, including: a simulation main control cabinet, an energy feedback unit cabinet, an F5 control cabinet and a towing platform;

[0006] The simulated main control cabinet mainly includes a main control PLC and control component indicator lights; the simulated main control cabinet controls the closing and opening of the main circuit contactor of the pitch control equipment through the main control PLC;

[0007] The energy feedback unit cabinet mainly includes an energy feedback unit, and the main power supply line of the energy feedback unit is connected in parallel with the main circuit line of the pitch device;

[0008] The F5 control cabinet mainly includes an F5 loading driver and a main circuit switch; the F5 control cabinet controls the F5 loading driver through the main control PLC to perform static and dynamic loading, and at the same time, the high voltage generated by the motor due to reversal enters the energy feedback unit cabinet through the main circuit switch for conversion and then fed back to the circuit;

[0009] The towing platform mainly includes a motor bracket, a coupling, a motor and a towing platform base. The motor includes a loading motor and a pitch motor. The loading motor and the pitch motor are installed on the motor bracket. The size and height of the motor bracket are different to ensure that the loading motor and the pitch motor are always in a coaxial state. The loading motor and the pitch motor are connected through a coupling. The loading motor is used to load the pitch equipment during testing.

[0010] Furthermore, the main control PLC is connected to the F5 loading driver via CAN communication, and the main control PLC sends a control word to the F5 loading driver via a PLC program to control the loading torque of F5, and the main control PLC performs intelligent control on the F5 loading driver.

[0011] Furthermore, when the variable pitch device is operating normally, the main control PLC controls the F5 loading driver to load. At this time, the loading motor is reversed and is equivalent to a generator. It is transmitted to the energy feedback unit through the F5 loading driver. The energy feedback unit converts direct current into three-phase alternating current and feeds it back to the main circuit for use in the operation of the variable pitch device.

[0012] Compared with the prior art, the present invention produces the following beneficial effects: a variable pitch process loading test system of the present invention integrates the loading test system into three general distribution cabinets, namely, an analog main control cabinet, an energy feedback unit cabinet and an F5 control cabinet, thereby effectively reducing the system failure rate and facilitating maintenance; at the same time, the peripheral load thermal resistor is removed, and the energy feedback unit is used to feed back the power generated during loading to the main circuit, so as to recycle the electric energy, reduce the loss of electric energy, and reduce the electric energy used during the variable pitch cabinet test; the mechanical part is mainly integrated in the towing platform, occupies a small area and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a system structure diagram of the present invention;

[0014] Figure 2 It is the wiring diagram of the energy feedback unit of the present invention;

[0015] Figure 3 The wiring diagram of the F5 loading driver of the present invention; DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] See also Figure 1-3 , the preferred embodiment of the present invention provides a variable pitch process loading test system, including: a simulation main control cabinet, an energy feedback unit cabinet, an F5 control cabinet and a towing platform;

[0018] The simulated main control cabinet mainly includes a main control PLC and control component indicator lights; the simulated main control cabinet controls the closing and opening of the main circuit contactor of the pitch device through the main control PLC; the main control PLC is connected to the F5 loading driver through CAN communication, and the main control PLC intelligently controls the F5 loading driver. The main control PLC sends control to the F5 loading driver through the PLC program to control the loading torque of the F5 loading driver. The main control PLC intelligently controls the F5 loading driver including fault reset, loading button, indicator light, etc. The communication method selected varies depending on the pitch device, but the main communication methods are CAN and Profiubs.

[0019] The energy feedback unit cabinet mainly includes an energy feedback unit, and the main power supply line of the energy feedback unit is connected in parallel with the line of the main circuit of the variable pitch device; when the variable pitch device is operating normally, the main control PLC controls the F5 loading driver to load, and at this time the loading motor is reversed, which is equivalent to a generator, and is transmitted to the energy feedback unit through the F5 loading driver. The energy feedback unit converts direct current into three-phase alternating current and feeds it back to the main circuit for use in the operation of the variable pitch device.

[0020] The F5 control cabinet mainly includes an F5 loading driver and a main circuit switch; the F5 control cabinet controls the F5 loading driver through the main control PLC to perform static and dynamic loading, and at the same time, the high voltage generated by the motor due to reversal enters the energy feedback unit cabinet through the main circuit switch for conversion and then fed back to the circuit;

[0021] The towing platform mainly includes a motor bracket, a coupling, a motor and a towing platform base, etc. The motor includes a loading motor and a pitch motor; the loading motor and the pitch motor are installed on the motor bracket, and the loading motor and the pitch motor are always in a coaxial state through the different sizes and heights of the motor bracket. The loading motor and the pitch motor are connected through a coupling. When the pitch equipment is tested, it is loaded through the loading motor to meet the testing needs of the pitch equipment.

[0022] The variable pitch process loading test system is mainly composed of the main control PLC, F5 loading driver, energy feedback unit, towing platform and other parts. The main control PLC and some control component indicator lights are placed in the simulation main control cabinet, the F5 loading driver and the main circuit switch are placed in the F5 control cabinet, and the energy feedback unit is placed in the energy feedback unit cabinet. The three general distribution cabinets of the simulation main control cabinet, F5 control cabinet, and energy feedback unit cabinet together constitute the electrical control part of the loading test system; the main control PLC and the F5 driver are connected through Can communication, the main control PLC is the master station, and the three F5 loading drivers are slave stations. The three F5 drivers are controlled by the main control PLC to send control words to realize the loading torque; the DC output electricity of the three F5 loading drivers is connected in parallel and then connected to the DC input of the energy feedback unit through a DC switch, converted into 400V AC power by the energy feedback unit, and fed back to the main circuit through the 400V power supply of energy feedback; the mechanical part of the loading test system consists of the loading motor and its base and the towing platform. The loading motor and the pitch motor are installed on the towing platform through different brackets and connected with a coupling. Brackets of different sizes and heights are used to ensure that the loading motor and the pitch motor are always coaxial.

[0023] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the present invention integrates the loading test system into three universal distribution cabinets, namely the simulation main control cabinet, the energy feedback unit cabinet and the F5 control cabinet, effectively reducing the system failure rate and facilitating maintenance; at the same time, the peripheral load thermal resistor is removed, and the energy feedback unit is used to feed back the power generated during loading to the main circuit, so as to recycle the electric energy, reduce the loss of electric energy, and reduce the electric energy used during the pitch cabinet test; the mechanical part is mainly integrated in the towing platform, which occupies a small area and is easy to install.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A variable pitch process loading test system, characterized in that: include: Simulate the main control cabinet, energy feedback unit cabinet, F5 control cabinet and towing platform; The simulated main control cabinet mainly includes a main control PLC and control component indicator lights; the simulated main control cabinet controls the closing and opening of the main circuit contactor of the pitch control equipment through the main control PLC; The energy feedback unit cabinet mainly includes an energy feedback unit, and the main power supply line of the energy feedback unit is connected in parallel with the main circuit line of the pitch device; The F5 control cabinet mainly includes an F5 loading driver and a main circuit switch; the F5 control cabinet controls the F5 loading driver through the main control PLC to perform static and dynamic loading, and at the same time, the high voltage generated by the motor due to reversal enters the energy feedback unit cabinet through the main circuit switch for conversion and then fed back to the circuit; The towing platform mainly includes a motor bracket, a coupling, a motor and a towing platform base. The motor includes a loading motor and a pitch motor. The loading motor and the pitch motor are installed on the motor bracket. The size and height of the motor bracket are different to ensure that the loading motor and the pitch motor are always in a coaxial state. The loading motor and the pitch motor are connected through a coupling. The loading motor is used to load the pitch equipment during testing.

2. A variable pitch process loading test system according to claim 1, characterized in that: The main control PLC is connected to the F5 loading driver via CAN communication. The main control PLC sends a control word to the F5 loading driver via a PLC program to control the loading torque of the F5. Meanwhile, the main control PLC performs intelligent control on the F5 loading driver.

3. A variable pitch process loading test system according to claim 1, characterized in that: When the variable pitch device is operating normally, the main control PLC controls the F5 loading driver to load. At this time, the loading motor is reversed and is equivalent to a generator. It is transmitted to the energy feedback unit through the F5 loading driver. The energy feedback unit converts direct current into three-phase alternating current and feeds it back to the main circuit for use in the operation of the variable pitch device.

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