A Novel Self-Driven Modular High Voltage Rheostat

A driving module and rheostat technology, applied in sliding contact resistors, emergency protection circuit devices for limiting overcurrent/overvoltage, electrical components, etc., can solve complex protection circuits, affect system stability, superconducting material failure Issues such as ultra-safety protection

Active Publication Date: 2022-07-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current superconductors and positive temperature coefficient resistors all have variable impedance characteristics, but it is difficult to meet the requirements of practical applications. It needs matching refrigeration equipment or rectification equipment, which consumes a lot of energy

Method used

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  • A Novel Self-Driven Modular High Voltage Rheostat
  • A Novel Self-Driven Modular High Voltage Rheostat

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Experimental program
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Embodiment Construction

[0030] In order to make the technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention:

[0031] refer to figure 1 The sliding guide 1 is a door-shaped metal guide, and the surface of the guide is polished and plated to enhance its conductivity and sliding contact. The freewheeling guide 5 is made of the same material as the sliding guide, and plays the role of conducting freewheeling. The said receiving plate 2 is made of insulating material and plays the role of fixing and supporting the metal slider. The metal slider 3 is placed on the receiving plate 2 . 4 is a high-voltage current-limiting resistor, using a high specific energy ZnO ceramic linear resistor.

[0032] refer to figure 1 , figure 2 , works as follows:

[0033] (1) In the normal working state, t...

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Abstract

The invention belongs to the technical field of high-voltage power transmission and distribution devices, and relates to a novel self-driven modular high-voltage varistor. The varistor includes a sliding guide rail, a sliding block, a high-voltage current limiting resistor, a receiving plate and a freewheeling guide rail. The new self-driven modular high-voltage varistor is symmetrical on the left and right, the sliding guide is an inverted L-shaped metal guide, and the surface of the guide is polished and plated to enhance its conductivity and sliding contact. The two sliding guide rails are connected by a receiving plate, and the metal slider is placed on the receiving plate after surface treatment. The said receiving plate is made of insulating material and plays the role of fixing and supporting the metal slider. When a fault occurs, the present invention can limit the fault current rising rate and the fault current peak value in time without detection and control; in normal operation, it is close to zero loss and has no influence on the system operation.

Description

technical field [0001] The invention belongs to the technical field of high-voltage power transmission and distribution devices, and relates to a novel self-driven modular high-voltage varistor. Background technique [0002] With the substantial increase in global energy consumption, the short-circuit current of the power grid has also increased rapidly. The current or expected short-circuit level of many lines has approached or even exceeded the breaking capacity of the existing circuit breakers, which seriously threatens the stable and safe operation of the power grid, and also causes Insufficient ability of new power plants to connect to the system limits the development of the power system. In AC or DC power systems, the root cause of short-circuit current is a sudden drop in impedance, which causes the system impedance to be too low, resulting in excessive short-circuit current or rapid rise. [0003] Installing a fault current limiter (FCL) is the best solution to lim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C10/38H02H9/02
CPCH01C10/38H02H9/02Y02E60/60
Inventor 廖敏夫王汝凡段雄英李金金黄智慧
Owner DALIAN UNIV OF TECH
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