Automatic reset residual voltage pulse hardware detection circuit
A detection circuit and automatic reset technology, applied in the direction of only measuring voltage, circuit devices, measuring electrical variables, etc., can solve problems such as detection of residual voltage pulses, false blocking, etc., to achieve the effect of improving reliability
Active Publication Date: 2020-12-11
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology
As a control mechanism for voltage-time feeder automation, feeder terminals usually use maintenance-free, long-life supercapacitors as backup power. However, this type of feeder terminal cannot detect residual voltage pulses through software when power is lost or self-test is started. defect
The existing residual pressure detection module can complete the basic detection function, but it needs to be reset by the software or the user based on specific working conditions when the feeder terminal is working normally, and false locking often occurs during the operation of the equipment
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] figure 1 It shows a schematic diagram of the principle of an automatic reset residual voltage pulse hardware detection circuit in an embodiment of the present invention, the circuit includes a voltage processing module, a signal conversion module, a signal delay module and a residual voltage recording module; wherein, the voltage processing The input end of the module is connected to the low-voltage AC power supply line, the output end of the voltage process...
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The invention discloses an automatic reset residual voltage pulse hardware detection circuit. The circuit comprises a voltage processing module, a signal conversion module, a signal delay module and aresidual voltage recording module. An input end of the voltage processing module is connected with a low-voltage alternating-current power supply line, the output end of the voltage processing moduleis connected with the input end of the signal conversion module, and the output end of the signal conversion module is connected with the residual voltage recording module; and the output end of thevoltage processing module is connected with the input end of the signal delay module, and the output end of the signal delay module is connected with the residual voltage recording module. According to the embodiment of the invention, hardware detection and automatic reset of a residual voltage event of a distribution line can be realized, a defect that software cannot acquire residual voltage pulses due to a low capacity of a backup power supply of a feeder terminal and an error logic problem of mis-locking are overcome, and the operation reliability of the feeder terminal is improved.
Description
technical field [0001] The invention relates to the technical field of electric power automation, in particular to an automatic reset residual voltage pulse hardware detection circuit. Background technique [0002] Because the voltage-time feeder automation logic can automatically isolate the 10kV line fault and restore the power supply of the fault section without relying on the communication and distribution master station, it has been widely used in the domestic distribution automation field. As a control mechanism for voltage-time feeder automation, feeder terminals usually use maintenance-free, long-life supercapacitors as backup power. However, this type of feeder terminal cannot detect residual voltage pulses through software when power is lost or self-test is started. defect. The existing residual pressure detection module can complete the basic detection function, but it needs to be reset by the software or the user based on specific working conditions when the fee...
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Login to View More IPC IPC(8): G01R19/00G01R1/36H02H7/26H02H3/06
CPCG01R19/0084G01R1/36H02H7/26H02H3/066
Inventor 李克文欧世锋俞小勇陈千懿吴丽芳黄伟翔欧阳健娜
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD