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Fuse specification determination method and system of fusing type overvoltage protection device, terminal and medium

A protective device and overvoltage technology, applied in the direction of fuse testing, etc., can solve problems such as low applicability and complex algorithms

Pending Publication Date: 2021-12-21
上海舒盈科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing fuse selection methods generally consider many factors such as ambient temperature, normal operating current, pulse, and inrush current. The algorithm is complex and the applicability is not high.

Method used

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  • Fuse specification determination method and system of fusing type overvoltage protection device, terminal and medium
  • Fuse specification determination method and system of fusing type overvoltage protection device, terminal and medium
  • Fuse specification determination method and system of fusing type overvoltage protection device, terminal and medium

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Embodiment Construction

[0046] The following is attached Figure 1-8 The application is described in further detail.

[0047] This specific embodiment is only an explanation of this application, and it is not a limitation of this application. Those skilled in the art can make modifications to this embodiment without creative contribution according to needs after reading this specification, but as long as the rights of this application All claims are protected by patent law.

[0048] The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0049] figure 1 A fuse-type overvoltage protection device is shown. refer to figure 1 , The device includes: incoming line end, outgoing line end, incoming line end fuse FU1, outgoing line end fuse FU2 and self-contained neutral point star connection non-linear resistor.

[0050] The incoming terminal includes three phases A1, B1, and C1, and the outgoing terminal includes three phases...

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Abstract

The invention relates to a fuse specification determination method and system of a fusing type overvoltage protection device, a terminal and a medium, and belongs to the technical field of power system overvoltage and insulation protection. The fusing type overvoltage protection device comprises a wire inlet end, a wire inlet end fuse FU1, a star-connected nonlinear resistor disc, a wire outlet end fuse FU2 and a wire outlet end which are sequentially connected in series. The method comprises the following steps: acquiring parameters of a nonlinear resistor disc; generating a lightning impulse characteristic curve and a square wave through-flow characteristic curve based on the parameters of the nonlinear resistor disc; determining a boundary curve based on the lightning impulse characteristic curve and the square wave through-flow characteristic curve; and obtaining a candidate fuse wire type selection specification curve, so as to determine whether the fuse wire specification corresponding to the candidate fuse wire type selection specification curve meets the requirement based on the position relationship between the candidate fuse wire type selection specification curve and the boundary curve. The fuse selection method has the effect of simplifying the fuse selection method of the fuse.

Description

technical field [0001] The present application relates to the technical field of power system overvoltage and insulation protection, in particular to a method, system, terminal and medium for determining fuse specifications of a fuse-type overvoltage protection device. Background technique [0002] Overvoltage is the phenomenon that the voltage of some lines or equipment exceeds the voltage rating due to lightning strikes, switch operations, faults, or improper parameter coordination, which may cause damage to devices in the power system. [0003] At present, in engineering applications, overvoltage protection devices are often designed in series with non-linear resistors. As an overvoltage suppression element, the non-linear resistor is directly connected to the bus bar or charged body to completely absorb the energy of the energy storage device. Phase- Various overvoltages of phase and phase-ground are effectively damped and suppressed at an extremely low level, which can ...

Claims

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Application Information

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IPC IPC(8): G01R31/74
CPCG01R31/74
Inventor 罗建勤
Owner 上海舒盈科技股份有限公司
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