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System and method for monitoring damaged on-off quantity of surge protection device and ground resistance online in real time

A grounding resistance and monitoring system technology, which is applied in the field of electronic communication, can solve problems such as the inability to measure single-point grounding points, and achieve good grounding effects

Active Publication Date: 2013-07-17
CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this kind of instrument is that it does not need auxiliary measurement ground, and the measurement process is simple and fast. The disadvantage is that it can only measure more than two ground points, and cannot measure single-point ground points.

Method used

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  • System and method for monitoring damaged on-off quantity of surge protection device and ground resistance online in real time
  • System and method for monitoring damaged on-off quantity of surge protection device and ground resistance online in real time
  • System and method for monitoring damaged on-off quantity of surge protection device and ground resistance online in real time

Examples

Experimental program
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Effect test

Embodiment 1

[0152] see figure 1 , the present invention discloses a switch quantity data collection and monitoring system for lightning protection damage, the system includes several data collection systems 100, servers 200, and several clients 300. The data acquisition system 100 respectively collects the state information of the switch value corresponding to the damage of the lightning protection device and the resistance value information of the grounding resistance, which can be displayed on the display device on the corresponding lightning protection cabinet; The collected data is aggregated into the server 200 , and the operator can access the corresponding data in the server 200 through the client 300 installed remotely. Each lightning protection cabinet can be equipped with a data collection system 100, and each data collection system 100 will collect the collected data to the server 200 through a collection machine (station machine) 180. Of course, multiple data collection system...

Embodiment 2

[0257] The difference between this embodiment and Embodiment 1 is that in this embodiment, the lightning protector includes m rows of switching values, a total of s switching values; the number of switching values ​​in each row is the same or different.

[0258] In this embodiment, among the switching values ​​of each row, a row of switching values ​​includes at most n switching values; the switching value D ab It is defined as the switching value of row a and column b; among them, a and b are integers, a∈[1,m], b∈[1,n].

[0259] The damaged switch data acquisition module includes m row connecting wires, n column connecting wires, and the switching value D ij The two ends of the i-th row are respectively connected with the line K i and the jth column connection line I j Connection; at the same time, the i-th row connection line K i or the jth column connection line I j Connect the switching value D through the corresponding first diode ij The corresponding ports of ; wher...

Embodiment 3

[0266] The difference between this embodiment and Embodiment 1 is that in this embodiment, in the real-time online monitoring of grounding resistance, the software function modules of the microcontroller are composed as follows Figure 8 shown; below Figure 8 Each module in is described.

[0267] 1) Constant current source switch control

[0268] This module is mainly responsible for controlling whether to input a constant current source, and the constant current source of this device is 20mA.

[0269] 2) Measure the constant current source

[0270] This module is responsible for the Figure 6-7 The V1 point reads the constant current source, and also provides self-calibration of the constant current source before the device leaves the factory.

[0271] 3) Measuring sources of interference

[0272] This module judges whether the interference source is too large under the condition of injecting constant current source or not. and 5) After the steps, the interference sour...

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Abstract

The invention discloses a system and method for monitoring damaged on-off quantity of a surge protection device and ground resistance online in the real time. A measuring system comprises a server, one or a plurality of remote monitoring terminals and one or a plurality of data collecting systems. The server is respectively connected with various remote monitoring terminals and all data collecting systems. Each data collecting system comprises a damaged on-off quantity data collecting module and a ground resistance collecting module. Each damaged on-off quantity data collecting module comprises m row-connecting lines and n line-connecting lines. Each ground resistance collecting module comprises a micro-processor module, a constant current source injection module, a sampling voltage reading module and a ground resistance measuring software module. The micro-processor modules are connected with the constant current injection modules, the sampling voltage reading modules and the ground resistance measuring software modules respectively. The system and method can guarantee effective judgment of damaged on-off quantity of all surge protection devices and simultaneously can measure the ground resistance in the real time precisely. The system and method is especially suitable for railway signal lightning protection.

Description

technical field [0001] The invention belongs to the technical field of electronic communication, and relates to an online monitoring system, in particular to a real-time on-line monitoring system for a damaged switch and grounding resistance of a lightning protector; at the same time, the invention also relates to a damaged switch and an Real-time online monitoring method for grounding resistance. Background technique [0002] SPDs include power supply SPDs and signal SPDs. SPDs are also called lightning arresters, surge protectors, surge protectors (Surge Protection Devices, SPD for short), and overvoltage protectors. Lightning protector is a device that prevents being struck by lightning through modern electricity and other technologies. It is widely used in the field of communication and electric power, and has been highly valued by everyone. [0003] There are several switches inside the surge protector. In order to make the interior of the surge protector tidy, the swi...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R27/20
Inventor 王予平张长生徐连海潘云洪陆挺吴旺生陈志雄
Owner CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP
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