Smart earth resistor on-line monitor and system thereof

A technology of grounding resistance and monitoring system, applied in grounding resistance measurement, measuring resistance/reactance/impedance, instruments, etc., can solve problems such as affecting users' normal power consumption, low efficiency, and needing power outage operations, and achieve high stability and high performance. The effect of precision and high reliability

Inactive Publication Date: 2017-12-15
ANHUI ZHONGPUSHENGDE ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only is the efficiency very low, but also requires power outage operations, which affects the normal power consumption of users

Method used

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  • Smart earth resistor on-line monitor and system thereof
  • Smart earth resistor on-line monitor and system thereof
  • Smart earth resistor on-line monitor and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1: The transmission system tower is grounded, such as Figure 8 and Figure 9 shown;

[0075] They are connected by overhead ground wires to form a multi-point grounding system, which is very convenient for monitoring. Among them: R1 is the predicted grounding resistance, R0 is the equivalent resistance after the parallel connection of the grounding resistances of all other towers, that is, R0=R2∥R3∥R4∥...∥Rn, if n is larger (more grounding points), the value of R0 The closer to 0, far smaller than R1, from an engineering point of view, R0 = 0, so the data obtained by the monitor should be the value of R1. A monitor can be installed for each tower, and the grounding resistance value of each tower can be tested at the same time.

Embodiment 2

[0076] Embodiment 2: The computer room and the transmission tower are grounded, such as Figure 11 shown;

[0077] The grounding of the computer room and the transmission tower is generally independent in the field. Connect the two to form a two-point circuit, and then install the monitor, as shown in the figure below. It is also possible to make two additional auxiliary grounding electrodes and monitor them with the three-point method.

Embodiment 3

[0078] Embodiment three: building grounding, such as Figure 12 shown;

[0079] If R1~R6...Rn are independent grounding bodies in the ground and are not connected together to form a multi-point grounding system, the monitoring can be very convenient to monitor the grounding resistance value. If R1~R6...Rn are connected together underground, it is a single-point grounding system, and the grounding resistance is tested according to the single-point grounding system. The direct installation is to monitor the metal circuit resistance, and the grounding condition can be judged.

[0080] For large-scale building ground grids, it is enough to monitor its grounding status - the equipotential value between the grounding downconductor and the ground grid. Because of this kind of large-scale ground network, if there is a problem with the grounding, it will only be the connection between the grounding downconductor and the ground network, so it is enough to monitor and judge whether the ...

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Abstract

The invention discloses a smart earth resistor on-line monitor system which comprises a data acquisition module for data acquisition, a microprocessor which processes the data of the data acquisition module and is connected with a monitoring unit, a first temperature sensor for acquiring temperature data of a microprocessor electric control plate, a second temperature sensor for acquiring the external temperature data of the monitor, a GPS positioning module for positioning the system electric control plate, and a ground voltage acquisition module and a ground current acquisition module for acquiring thunder electric signal data. The system has the advantages of on-line test, non-contact measurement, ground wire crossing a core, requiring on self monitoring, real-time monitoring, data transmission through wired or wireless communication and remote on-line monitoring. The system also has rainproof, dustproof, high and low temperature resistant, anticorrosion and flame retardation properties, and ensures high precision, high stability and high reliability of outdoor and indoor long-time on-line monitoring and long-time on-line monitoring under a mine.

Description

technical field [0001] The invention belongs to the technical field of intelligent lightning protection, in particular to an intelligent grounding resistance online monitor and a system thereof. Background technique [0002] With the continuous expansion of my country's cities and the continuous development of the power industry, the number of Taiwan districts is increasing day by day. Compared with the ever-increasing number of stations, the corresponding monitoring and management of stations is increasingly stretched. Therefore, the power industry urgently needs to install a large number of automation equipment to help collect electricity bills in a timely manner, ensure the safe operation of equipment, and ensure the normal use of electricity by users. [0003] At present, the real-time monitoring system in my country's station areas is becoming more and more mature, but the measurement of grounding resistance is a big gap. Whether the grounding wire in the station area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/20G01R27/08
CPCG01R27/205G01R27/08
Inventor 黄德青
Owner ANHUI ZHONGPUSHENGDE ELECTRONICS TECH
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