Automatic control technology for power supply of direct-current overhead line type rail electric locomotive
A trolley car and trolley type technology, which is applied in the field of automatic power supply control of DC trolley trains, can solve problems such as electric shock hazards, work efficiency reduction, safety hazards, etc., to ensure safe operation, improve work efficiency, Avoid the effect of electric shock
Active Publication Date: 2021-07-09
刘健钊
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Problems solved by technology
There are serious safety hazards in the continuous charging of overhead lines. For example, people with easily conductive tools accidentally touch the overhead lines, which may easily cause electric shock; manually disconnecting the high-voltage switch not only reduces work efficiency, but also when personnel forget to turn off the power, the overhead lines will be damaged. Continuously electrified, the above-mentioned safety hazards still exist
Method used
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Embodiment
[0028] The embodiment of the present invention provides an automatic power supply control technology for DC trolley trams. This technology uses a single-chip micro-control board to monitor the running status of DC trolley cars in real time. When the running signal is successfully detected, the high-voltage vacuum The switch unit is closed immediately, and the high-voltage DC power supply is connected to the overhead line; when the current detected by the current detection unit is within the time range set by the display screen setting unit, and is continuously lower than the operating current value set by the display screen setting unit, the high-voltage vacuum switch The unit is immediately disconnected to complete the power supply management of the high voltage DC power supply.
[0029] The automatic control technology is based on the control panel.
[0030] The high-voltage vacuum switch is used for high-voltage DC vacuum switches within 450V. The coil inside the high-volta...
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The invention provides a direct-current trolley tramcar power supply automatic control technology, and relates to the technical field of direct-current trolley tramcar control. According to the direct-current trolley tramcar power supply automatic control technology, the running state of a trolley tramcar is detected in real time through the automatic control technology, and when a starting running signal sent by the trolley tramcar manually is successfully detected, a high-voltage vacuum switch unit is connected to a high-voltage direct-current power source needed by a tramcar locomotive; when the current detection unit detects that the load current is lower than a set value within a time range set by the display screen setting unit, the high-voltage vacuum switch unit immediately cuts off the high-voltage direct-current power supply; the high-voltage vacuum switch unit is composed of a direct-current 450V high-voltage vacuum switch; the current detection unit is composed of a Hall direct current sensor; the display screen setting unit is composed of a configurable industrial control setting screen with a Modbus RTU protocol; and the automatic control technology is based on a control panel. According to the direct-current trolley tramcar power supply automatic control technology, the control panel detects the operation signal of the rail electric locomotive in real time, when the operation signal is successfully detected, the control panel controls the high-voltage vacuum switch to be switched on, the high-voltage direct-current power supply is connected to the overhead line for the operation of the rail electric locomotive, and when the control panel does not detect the operation current of the electric locomotive within the set time, the control panel immediately turns off the high-voltage vacuum switch.
Description
technical field [0001] The invention relates to the technical field of power supply control technology for a DC trolley type rail electric locomotive, in particular to an automatic power supply control technology for a DC trolley type rail electric locomotive. Background technique [0002] The DC trolley locomotive is widely used in mining enterprises. This type of tram locomotive needs to provide a DC high-voltage power supply of not less than 250V. The negative pole of the DC power supply is connected to the track, and the positive pole of the DC power supply is connected to the overhead line. The process is realized through a special conductive rod in contact with the overhead line. At present, most overhead lines continue to be charged when the electric locomotive is not running, and cannot automatically cut off the power. Or when the electric locomotive is not running, it is necessary to manually operate the high-voltage switch to disconnect the DC high-voltage power s...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60L3/00B60L9/08
CPCB60L3/00B60L9/08B60L2200/26
Inventor 刘健钊陈宁马建超
Owner 刘健钊