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High-capacity overvoltage absorber

A technology of absorbers and high-voltage fuses, which is applied in the direction of emergency protection circuit devices, electrical components, and circuit devices used to limit overcurrent/overvoltage, and can solve problems such as short circuits between phases and cumulative insulation damage in electrical equipment. Achieve the effect of reducing the residual voltage value, eliminating the protection dead zone, and suppressing the peak overvoltage

Inactive Publication Date: 2015-09-09
ANHUI LUXUN ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, there are the following voltages in the 3-35KW power system: operating overvoltage of circuit breakers and other equipment, metal and arc grounding overvoltage generated when single-phase metal is grounded, and atmospheric overvoltage generated by lightning strikes, etc. Some peak overvoltages Its maximum value may reach more than 3.5 times the phase voltage. If such an overvoltage acts on the power grid for several hours, it will inevitably cause cumulative damage to the insulation in the electrical equipment. It will cause a major accident of phase-to-phase short circuit

Method used

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  • High-capacity overvoltage absorber

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Embodiment Construction

[0008] see figure 1 , a high-capacity overvoltage absorber, which includes nonlinear resistors FR1, FR2, high-voltage fuse RD, capacitor C, and resistor R. One end of the nonlinear resistor FR2 is used as a port, and the other end is connected to one end of the resistor R and the capacitor C respectively. One end is connected to one end of the non-linear resistor FR1, the other end of the resistor R, the other end of the capacitor C, and the other end of the non-linear resistor FR1 are respectively connected to one end of the high-voltage fuse RD, and the other end of the high-voltage fuse RD is used as the other port.

[0009] Resistor R and capacitor C form a high-frequency channel to transmit the high-frequency peak voltage generated in the system to the non-linear resistor FR2, and the non-linear resistor FR2 acts to absorb the peak overvoltage and limit the high-frequency peak voltage not to exceed a certain range, thus ensuring In order not to generate excessive voltage ...

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Abstract

A high-capacity overvoltage absorber relates to the overvoltage inhibition technical field of electric power systems. The high-capacity overvoltage absorber comprises a non-linear resistor FR1, a non-linear resistor FR2, a high-voltage fuse RD, a capacitor C and a resistor R. One end of the non-linear resistor FR2 serves as a port, and the other end of the non-linear resistor FR2 is connected to one end of the resistor R, one end of the capacitor C and one end of the non-linear resistor FR1. The other end of the resistor R, the other end of the capacitor C and the other end of the non-linear resistor FR1 are connected to one end of the high-voltage fuse RD. The other end of the high-voltage fuse RD serves as the other port. The high-capacity overvoltage absorber exhibits a good voltage limiting effect, is low in residual voltage, and has great energy collection and energy absorption functions.

Description

technical field [0001] The invention relates to the technical field of power system overvoltage suppression, in particular to a high-capacity overvoltage absorber. Background technique [0002] At present, there are the following voltages in the 3-35KW power system: operating overvoltage of circuit breakers and other equipment, metal and arc grounding overvoltage generated when single-phase metal is grounded, and atmospheric overvoltage generated by lightning strikes, etc. Some peak overvoltages Its maximum value may reach more than 3.5 times the phase voltage. If such an overvoltage acts on the power grid for several hours, it will inevitably cause cumulative damage to the insulation in the electrical equipment. It will cause a major accident of phase-to-phase short circuit. Contents of the invention [0003] The purpose of the present invention is to provide a high-capacity overvoltage absorber with good voltage limiting effect, low residual voltage value, and good ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
Inventor 不公告发明人
Owner ANHUI LUXUN ELECTRONICS TECH
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