阅读说明：本技术 一种低压空气开关的故障定位装置 (Fault positioning device of low-voltage air switch ) 是由 谢锟 苏珏 苏海林 温健锋 廖卫平 方涛 李少杰 于 2019-10-17 设计创作，主要内容包括：本发明涉及供电故障检测工具领域,更具体地,涉及一种低压空气开关的故障定位装置,包括壳体和安装于壳体内的故障定位模块；故障定位模块包括用于检测输电线路电压的电压检测器、用于检测空气开关是否有电流输入的电流检测器和与电压检测器和电流检测器电连接的控制模块,控制模块接受电压检测器和电流检测器的电信号。本发明提出一种带故障定位功能的低压空气开关,首先通过电流互感器判断用户是否存在停电问题,然后通过各处的电压互感器数值进行故障位置定位,从迅速查找住宅线路故障位置并进行定位,提高复电的效率。(The invention relates to the field of power supply fault detection tools, in particular to a fault positioning device of a low-voltage air switch, which comprises a shell and a fault positioning module arranged in the shell; the fault positioning module comprises a voltage detector for detecting the voltage of the power transmission line, a current detector for detecting whether the air switch has current input or not and a control module electrically connected with the voltage detector and the current detector, and the control module receives electric signals of the voltage detector and the current detector. The invention provides a low-voltage air switch with a fault positioning function, which is characterized in that whether a power failure problem exists in a user is judged through a current transformer, then fault position positioning is carried out through the numerical values of voltage transformers at all positions, the fault position of a residential line is rapidly searched and positioned, and the power recovery efficiency is improved.)

1. The fault positioning device of the low-pressure air switch is characterized by comprising a shell and a fault positioning module arranged in the shell; the fault positioning module comprises a voltage detector for detecting the voltage of the power transmission line, a current detector for detecting whether the current is input to the air switch or not and a control module electrically connected with the voltage detector and the current detector, and the control module receives electric signals of the voltage detector and the current detector.

2. The fault location device of claim 1, wherein the voltage detector is provided with two voltage detectors, and the two voltage detectors are respectively connected to two of the power transmission line from the cell to the building, the power transmission line from the building to the electric energy meter, and the power transmission line from the air switch to the user.

3. The fault location device of claim 1, wherein there are three voltage detectors connecting the cell to the building transmission line, the building to the electric energy meter transmission line and the air switch to the user transmission line.

4. The fault location device of claim 1, wherein the current detector is disposed on the power line from the electric energy meter to the air switch.

5. A fault location device of a low-voltage air switch according to any one of claims 1 to 4, characterized in that a power module for providing power for the fault location module is further arranged in the housing.

6. A fault location device of a low-voltage air switch according to any one of claims 1 to 4, characterized in that a display module for receiving signal states of a voltage detector and a current detector is further arranged in the shell.

7. The fault locating device of a low-voltage air switch according to any one of claims 1 to 4, wherein the voltage detector is a voltage transformer and the current detector is a current transformer.

Technical Field

The invention relates to the field of power supply fault detection tools, in particular to a fault positioning device of a low-voltage air switch.

Background

A low-voltage air switch integrates control and multiple protection functions, and can cut off a user line to achieve the protection effect by judging the conditions that the current exceeds rated current, short circuit or voltage loss and the like. At present, social and economic development is rapid, living standard and living conditions of people are improved, more and more appliances are used in homes, and the air switch plays a vital role in guaranteeing the safety of household appliances and personal safety.

However, a user supplying power needs to go through a power supply line of a cell, then through a building power supply line, enter a first-floor electric energy box for a building where the user is located, and finally enter user equipment after passing through an air switch, so that even if the air switch is triggered, the user cannot necessarily accurately judge the power failure reason and the fault position. In addition, when the maintenance personnel arrive at the site, the maintenance personnel need to run through the electric inspection between the upper and lower floors to find the fault position, and the maintenance complexity is increased.

disclosure of Invention

The invention aims to solve the problem that the fault position cannot be accurately judged after the air switch is triggered in the prior art, and provides the fault positioning device of the low-pressure air switch, which can assist in judging the fault position, so that the problem that the house line fault is difficult to find and judge is quickly solved, and the power recovery efficiency is improved.

In order to solve the technical problems, the invention adopts the technical scheme that: a fault positioning device of a low-voltage air switch comprises a shell and a fault positioning module arranged in the shell; the fault positioning module comprises a voltage detector for detecting the voltage of the power transmission line, a current detector for detecting whether the current is input to the air switch or not and a control module electrically connected with the voltage detector and the current detector, and the control module receives electric signals of the voltage detector and the current detector.

The voltage detector is used for detecting whether voltage exists on the power transmission line or not so as to detect whether the power transmission circuit is in fault or not. The current detector is used for detecting whether the electric energy meter has current which enters a user through the air switch, so that whether the user has power failure is detected. The control module receives a voltage signal of the voltage detector and a current signal of the current detector, and the current of the input current signal received by the control module is zero, namely, the power failure occurs. And further, the fault position is positioned by judging whether the voltage of the voltage detector is zero or not.

Preferably, the voltage detectors are two, and the two voltage detectors are respectively connected to two of the power transmission lines from the cell to the building, the power transmission lines from the building to the electric energy meter and the power transmission lines from the air switch to the users. The voltage detectors are arranged on two of the power transmission lines, and when the voltage detected by the voltage detectors is normal, the voltage detector indicates that a fault occurs on the third power transmission line, so that the installation amount of the voltage detectors can be reduced.

Preferably, the voltage detectors are three and are respectively connected with the power transmission line from the cell to the building, the power transmission line from the building to the electric energy meter and the power transmission line from the air switch to the user. By looking at the voltage situation of the voltage detector it is clear on which power line the fault occurred.

Preferably, the current detector is arranged on a power transmission line from the electric energy meter to the air switch. The current detector detects the current from the electric energy meter to the air switch, whether the current flows into the user equipment is actually checked, and when the current of the current detector is zero, the control module can judge that the power failure occurs.

Preferably, a power module for providing power for the fault location module is further arranged in the housing. The power module can provide power autonomously, and even under the condition that external power supply is interrupted, the fault positioning module can still be used.

Further preferably, a display module for receiving signal states of the voltage detector and the current detector is further arranged in the shell. The maintenance personnel can directly see the signal conditions of the voltage detector and the current detector from the display module, and intuitively know the position of the power transmission line where the fault occurs.

Preferably, the voltage detector is a voltage transformer, and the current detector is a current transformer.

Compared with the prior art, the beneficial effects are: the invention provides a low-voltage air switch with a fault positioning function, which is characterized in that whether a power failure problem exists in a user is judged through a current transformer, then fault position positioning is carried out through the numerical values of voltage transformers at all positions, finally, collection and analysis of voltage and current value data are carried out through control, and fault points and fault information are output to a display module after the fault positions are analyzed, so that the fault position of a residential line is quickly searched and positioned, and the power restoration efficiency is improved.

Drawings

Fig. 1 is an external structural view of a fault location device of a low pressure air switch of the present invention;

FIG. 2 is a schematic circuit diagram illustrating the operation of the fault locating device of the low pressure air switch of the present invention;

Fig. 3 is a schematic circuit diagram illustrating the operation state of another embodiment of the fault locating device of the low-pressure air switch according to the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings: