一种基于相变冷却的风电变流器整机

Abstract

本实用新型属于变流器技术领域，尤其涉及一种基于相变冷却的风电变流器整机，包括控制柜、机侧进线柜、机侧功率柜、网侧功率柜、网侧滤波柜、底座、水风换热器、支架组装，所述控制柜、机侧进线柜、机侧功率柜、网侧功率柜、网侧滤波柜分别固定在底座上，并依次并柜；机侧进线柜内安装电抗器，机侧功率柜和网侧功率柜内安装功率单元，网侧滤波柜内安装电抗器和滤波电阻，机侧进线柜中的电抗器，机侧功率柜和网侧功率柜中的功率单元。优点是：具有高的防护等级，有效隔绝塔筒内或风机仓内的高盐雾、高潮湿性空气，提高柜内电气件及结构件的使用寿命，防止事故发生，提高设备整体的安全性能。

Claims

1. A phase change cooling based wind power converter system, characterized in that, The assembly includes a control cabinet, a machine-side incoming line cabinet, a machine-side power cabinet, a grid-side power cabinet, a grid-side filter cabinet, a base, a water-air heat exchanger, and a bracket. The wind power converter is a skid-mounted unit. The control cabinet, machine-side incoming line cabinet, machine-side power cabinet, grid-side power cabinet, and grid-side filter cabinet are respectively fixed on the base and arranged in sequence. The aforementioned reactor is installed in the machine-side incoming line cabinet, power units are installed in the machine-side power cabinet and the grid-side power cabinet, and reactors and filter resistors are installed in the grid-side filter cabinet. The reactors in the machine-side incoming line cabinet, the power units in the machine-side power cabinet and the grid-side power cabinet, and the reactors and filter resistors in the grid-side filter cabinet all adopt phase change cooling for heat dissipation. The water-air heat exchanger is assembled and fixed on the top of each cabinet via a bracket, extracting radiant heat from the cabinet and delivering cold air into the cabinet.

2. A phase change cooling based wind power converter system according to claim 1, characterized in that, It also includes copper busbars connecting the machine-side cabinets, copper busbars connecting capacitors, copper busbars connecting DC links, copper busbars connecting the grid-side cabinets, and insulators; There are three copper busbars connecting the cabinets on the machine side, which connect the three-phase lead-out copper busbars of the reactor in the incoming line cabinet on the machine side to the lead-out copper busbars of the three power units in the power cabinet on the machine side. Power units are installed in the upper, middle and lower layers of the machine-side power cabinet and the grid-side power cabinet; there are 12 capacitor connection copper busbars, of which 6 capacitor connection copper busbars connect the 3 lead-out copper busbars of the power units in the upper and middle layers of the machine-side power cabinet respectively, and the other 6 capacitor connection copper busbars connect the 3 lead-out copper busbars of the power units in the middle and lower layers of the grid-side power cabinet respectively. The DC link connecting copper busbars consist of three units, which respectively connect the three lead-out copper busbars of the lower-level power unit in the machine-side power cabinet to the three lead-out copper busbars of the lower-level power unit in the grid-side power cabinet; insulators are connected between the DC link connecting copper busbars and between the DC link connecting copper busbars and the cabinet body. There are a total of 5 copper busbars connecting the grid-side cabinets, which connect the lead-out copper busbars of the 3 power units in the grid-side power cabinet to the three-phase lead-out copper busbars of the reactor in the grid-side filter cabinet.

3. The phase change cooling based wind power converter system according to claim 1, characterized in that, A hoisting column is fixedly connected to the base.

4. The phase change cooling based wind power converter system according to claim 3, characterized in that, The lifting columns are respectively installed on the front and rear sides of the base, and the top of the lifting columns is higher than the top of the water-air heat exchanger.

5. The phase change cooling based wind power converter system according to claim 1, wherein, The control cabinet, machine-side incoming line cabinet, machine-side power cabinet, grid-side power cabinet, and grid-side filter cabinet are all equipped with a front door and a rear door. The front door is hinged to the cabinet and can be opened and closed by a handle. The rear door is a bolt-fixed sealed plate structure. The cabinet is equipped with a waterproof groove, which is tightly squeezed to the door panel by a clamping sealing strip.

6. The phase change cooling based wind power converter system according to claim 1, characterized in that, The interfaces of the gas collecting pipe and liquid return pipe of the reactor in the machine-side incoming line cabinet are located at the top of the machine-side incoming line cabinet; the interfaces of the gas collecting pipe and liquid return pipe of the power unit are located at the top of the machine-side power cabinet and the grid-side power cabinet; the interfaces of the gas collecting pipe and liquid return pipe of the reactor in the grid-side incoming line cabinet are located at the top of the grid-side filter cabinet. The interfaces of the gas collecting pipe and liquid return pipe of the filter resistor are located on the top of the mesh-side filter cabinet; each of the interfaces is connected to the condenser interface through a pipe.

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