Cylindrical linear induction motor control device of a high voltage circuit breaker and application method thereof
A technology of linear induction motor and high-voltage circuit breaker, which is applied in the direction of high-voltage air circuit breaker, motor generator control, AC motor control, etc., to achieve the effect of simplifying the mechanism
Inactive Publication Date: 2012-01-11
SHENYANG POLYTECHNIC UNIV
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In addition, the action time dispersion of these operating mechanisms is also relatively large. For AC control signals, it is even greater than 10ms. Therefore, the moving characteristics of the moving contact of the high-voltage circuit breaker in the above-mentioned operating mechanism are difficult to reach the ideal level.
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[0060] The DSP chip model of the present invention is TMS320F2812, the high-speed model HCPL-4504 photoelectric coupler dedicated to the IPM interface is used in the IPM isolation drive circuit, the discharge drive circuit model is PM300DSA120, the Hall element model is LT10-C, and the rotary encoder adopts OMRON incremental The rotary encoder model is E6B2-CWZ6C, and the DSP communicates with the upper PC through the driver chip SP3223EEY that conforms to the RS-232 standard.
[0061] The device as figure 1 Shown includes a high-voltage circuit breaker 5, a cylindrical linear induction motor 4, the main shaft of the cylindrical linear induction motor 4 is respectively connected to the moving contact of the high-voltage circuit breaker 5, the power grid fault detection unit 3 and the control unit 2, and the control unit 2 is respectively Connect the inverter unit 1 and the grid fault detection unit 3 .
[0062] inverter unit 1 such as figure 2 The shown includes a three-ph...
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The invention relates to a cylindrical linear induction motor control device of a high voltage circuit breaker and the application method thereof. The main shaft of a cylindrical linear induction motor of the device is respectively connected with the moving contact of the high voltage circuit breaker, a network fault detecting unit and a control unit; and the control unit is respectively connected with an inverter unit and the network fault detecting unit. The application method of the device comprises the steps as follows: the network fault detecting unit sends back the measured network voltage and the measured current signal to the control unit, and acquires a velocity curve; and the control unit controls the inverter unit, and then drives the cylindrical linear induction motor to move,so as to finally control that the moving contact of the high voltage circuit breaker conducts a switching / closing movement according to the velocity curve. The device helps to improve the making and breaking capabilities, the mechanical and electrical life, and the reliability of the high voltage circuit breaker. Through the application method, reverse operating force is produced to replace the function of a traditional buffer device, thereby achieving the aim of simplifying the mechanism.
Description
technical field [0001] The present invention relates to the technical field of power transmission and transformation equipment, in particular to a cylindrical linear induction motor control device for a high-voltage circuit breaker and an application method thereof, an operating mechanism for a cylindrical linear induction motor used in conjunction with high-voltage switchgear and Control of moving stroke characteristics of moving contact of high voltage circuit breaker. Background technique [0002] The traditional high-voltage circuit breaker operating mechanism is mainly composed of connecting rods, locks, and energy supply systems. It has many links, large cumulative motion tolerance, slow response, poor controllability, and low efficiency. The response time is generally tens of milliseconds. In addition, the action time dispersion of these operating mechanisms is also relatively large. For AC control signals, it is even greater than 10ms. Therefore, the moving charac...
Claims
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IPC IPC(8): H01H33/36H02P21/00H02P27/00H02P21/14
Inventor 刘爱民李家珏李永祥林莘徐建源
Owner SHENYANG POLYTECHNIC UNIV