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A method and system for judging the degradation degree of surge protector SPD

A surge protector, a level of technology, applied in the direction of instruments, measuring devices, measuring electricity, etc., can solve the problems of SPD safety performance safety hazards, SPD safety hazards, and lack of full-time lightning protection personnel

Inactive Publication Date: 2015-10-14
深圳市科威泰斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, general units do not have full-time personnel for lightning protection, and there are potential safety hazards in the current safety performance of SPDs that have been online for many years; and SPDs in important and unattended important places such as electric power, communications, national defense, energy, and measurement also have the same security risks.

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  • A method and system for judging the degradation degree of surge protector SPD
  • A method and system for judging the degradation degree of surge protector SPD
  • A method and system for judging the degradation degree of surge protector SPD

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Embodiment approach 1

[0030] refer to figure 1 The first embodiment of the method for determining the degree of SPD degradation in the present invention includes the following steps:

[0031] Step 100: applying a voltage to both ends of the SPD;

[0032] First of all, when implementing the method for judging SPD deterioration of the present invention, it is necessary to provide a power supply, which is used to apply a certain AC voltage or DC voltage to both ends of the SPD, because when an excessive voltage is applied, it may cause SPD overvoltage Therefore, in actual operation, it is necessary to collect the voltage applied at both ends of the SPD, and step down the voltage according to a certain ratio, such as 300:1, and finally become a micro voltage of about 0-1V, which can protect other SPD-related Modules, such as AD modules, MCU modules, etc., to avoid damage. Furthermore, Embodiment 1 of the present invention may apply a fixed value of voltage across the SPD.

[0033] Step 200: Sampling...

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Abstract

The invention discloses a method and system for judging the deterioration degree of a surge protective device (SPD). The method comprises the step of applying voltage to the two ends of the SPD, the step of sampling a current value of a leakage current flowing through the SPD and the step of comparing the sampled current value with a nominal voltage-sensitive leakage current value and judging the deterioration degree of the SPD. Thus, the leakage current of the SPD can be monitored, the deterioration degree of the SPD is judged according to changes of the leakage current, and therefore faults of the SPD are monitored online in real time and the deterioration degree of the SPD is judged online in real time.

Description

technical field [0001] The invention relates to the field of lightning protection, in particular to a method and system for judging the SPD degradation degree of a surge protector. Background technique [0002] With the rapid development of microelectronics and electronic technology, microelectronic systems such as communication, measurement, and computer network with large-scale integrated circuits as the core have been widely used in various fields of modern industry, agriculture, national defense, science and education, and people's lives. In recent years, system paralysis and equipment damage caused by lightning abound, resulting in countless human and material losses. Therefore, lightning disasters and lightning protection technology have received widespread attention from all walks of life. [0003] Surge Protective Device (SPD, Surge Protective Device) can discharge a large amount of pulse energy generated by lightning into the ground in the shortest time, so that el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02
Inventor 刘宁吴玉芹
Owner 深圳市科威泰斯科技有限公司