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A water level monitoring and alarm system and monitoring method for cable trenches in substations

A technology of water level monitoring and alarm system, applied in measuring devices, buoy liquid level indicators, liquid/fluid solid measurement, etc., can solve problems such as hidden safety hazards, high false alarm rate, and maintenance once a month or two.

Inactive Publication Date: 2019-04-30
NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy inspection workload during flood season
2. In the thunderstorm season, it is necessary to carry out flood control inspections on the cable trenches of each station, and other inspections are also required, and there are many cable trenches in each station, and they need to be checked one by one, which greatly increases the workload of the staff and Working hours also increase work intensity and affect work efficiency
3. Usually, when the cable ditch seeps, it is not possible to call the police to remind the monitoring personnel. The problem can only be found during routine inspections, which also poses a great safety hazard.
Its shortcomings are: the above-mentioned water level detection head is installed in the cable trench, there are many large generators, transformers, etc. in the substation, the magnetic field formed by the generators and transformers seriously affects the accuracy of the tester, and more importantly, the above-mentioned water level detection The first-class precision detection instrument is installed underwater, and its service life can be imagined. Generally, it needs to be repaired once a month or two, and the failure rate is high. There are more than 10 failures a year, and the false alarm rate is high. The false alarm rate is 40 %

Method used

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  • A water level monitoring and alarm system and monitoring method for cable trenches in substations
  • A water level monitoring and alarm system and monitoring method for cable trenches in substations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: as figure 1 As shown, a substation cable trench water level monitoring and alarm system includes a conduit 7 that extends into the water on the side wall of the cable trench through a bracket 3, and a push rod 6 with a float 8 at the bottom is arranged in the conduit 7, and the conduit 7 Inside, a release switch 5 is provided through a fixed rod, and the release switch 5 is connected with a programmable controller 4, and the programmable controller is connected with an audible and visual alarm.

[0025] The programmable controller is connected with a wireless communication module, and the wireless communication module 4 adopts a GPRS communication module.

[0026] The lower end of the conduit 7 is provided with a filtering mechanism.

[0027] The filter mechanism is a filter screen arranged at the lower end of the conduit to prevent foreign matter such as leaves from entering the conduit and blocking the conduit.

[0028] The push rod 6 is a hollow struc...

Embodiment 2

[0031] Embodiment 2: as figure 1 , 2 As shown, a substation cable trench water level monitoring and alarm system includes a conduit 7 that extends into the water on the side wall of the cable trench through a bracket 3, and a push rod 6 with a float 8 at the bottom is arranged in the conduit 7, and the conduit 7 Inside, a release switch 5 is provided through a fixed rod, and the release switch 5 is connected with a programmable controller 4, and the programmable controller is connected with an audible and visual alarm.

[0032] The wireless communication module 4 adopts a GPRS communication module.

[0033] The lower end of the conduit 7 is provided with a filtering mechanism.

[0034] The filter mechanism is a filter screen arranged at the lower end of the conduit to prevent foreign matter such as leaves from entering the conduit and blocking the conduit.

[0035] The push rod 6 is a hollow structure, and the push rod is light, which is convenient for the float to jack up....

Embodiment 3

[0046] Embodiment 3: as figure 1 , 2 As shown, a substation cable trench water level monitoring and alarm system includes a conduit 7 that extends into the water on the side wall of the cable trench through a bracket 3, and a push rod 6 with a float 8 at the bottom is arranged in the conduit 7, and the conduit 7 Inside, a release switch 5 is provided through a fixed rod, and the release switch 5 is connected with a programmable controller 4, and the programmable controller is connected with an audible and visual alarm.

[0047] The wireless communication module 4 adopts a GPRS communication module.

[0048] The lower end of the conduit 7 is provided with a filtering mechanism.

[0049] The filter mechanism is a filter screen arranged at the lower end of the conduit to prevent foreign matter such as leaves from entering the conduit and blocking the conduit.

[0050] The push rod 6 is a hollow structure, and the push rod is light, which is convenient for the float to jack up....

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Abstract

The invention discloses a monitoring and alarming system and a monitoring method for the water level of a cable trench in a substation. The fixed rod is provided with a release switch, and the release switch is connected with a programmable controller, and the programmable controller is connected with an audible and visual alarm. The wireless communication module adopts a GPRS communication module. The lower end of the conduit is provided with a filtering mechanism. The system alarms accurately, has a long service life, and can be used without failure for a long time.

Description

technical field [0001] The invention relates to the technical field of water level alarm equipment for cable trenches in substations, in particular to a monitoring and alarming system and a monitoring method for water level in cable trenches in substations. Background technique [0002] At present, there are the following problems in the substation cable trench. 1. The substation is unattended. A centralized control center monitors many substations, and the substations are scattered in various places. The flood season inspection workload is heavy. 2. In the thunderstorm season, it is necessary to carry out flood control inspections on the cable trenches of each station, and other inspections are also required, and there are many cable trenches in each station, and they need to be checked one by one, which greatly increases the workload of the staff and Working hours also increase work intensity and affect work efficiency. 3. Usually, when the cable trench seeps, the alarm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/60
CPCG01F23/603
Inventor 桂建廷徐涛王运柯刘旭中李琛赵建立贾布衣赵志磊杨静郝梦飞李杰民王珂
Owner NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER