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High-capacity over-voltage absorber

A technology of absorbers and high-voltage fuses, which is applied to emergency protection circuit devices, electrical components, and circuit devices for limiting 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 pressure value, eliminating the protection dead zone, and suppressing atmospheric overpressure

Inactive Publication Date: 2016-09-14
合肥酷睿网络科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are the following voltages in the 3-35KW power system: operating overvoltage of equipment such as circuit breakers, metal and arc grounding overvoltage generated when single-phase metal is grounded And lightning strikes are atmospheric overvoltages, etc. Some peak overvoltages may reach a maximum of 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 internal insulation of electrical equipment. If the insulation is broken down to the ground in the weak link of the insulation of all phases, it will cause a major accident of short circuit between phases

Method used

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  • High-capacity over-voltage 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

The invention discloses a high-capacity over-voltage absorber, and relates to technical field of over-voltage suppression of power systems. The high-capacity over-voltage absorber comprises a non-linear resistor FR1, a non-linear resistor FR2, a high-voltage fuse RD, a capacitor C and a resistor R, wherein one end of the non-linear resistor FR2 is taken as a port, and the other end of the non-linear resistor FR2 is connected with one end of the resistor R, one end of the capacitor C and one end of the non-linear resistor FR1 respectively; 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 with one end of the high-voltage fuse RD respectively; and the other end of the high-voltage fuse RD is taken as another port. The high-capacity over-voltage absorber has a good voltage limiting effect, a low residual voltage value and very good energy-gathering and energy-absorbing 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 ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/04
Inventor 董雄飞
Owner 合肥酷睿网络科技有限公司
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