CN216209441U

CN216209441U - High-voltage line current abnormity detection device

Info

Publication number: CN216209441U
Application number: CN202122506237.5U
Authority: CN
Inventors: 扈俊洪; 窦培培; 牛建勇
Original assignee: Shandong Huanke Electric Power Technology Co ltd
Current assignee: Shandong Huanke Electric Power Technology Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-05
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a high-voltage line current abnormity detection device in the technical field of high-voltage line current abnormity detection, wherein current transformers fixedly sleeved on the outer side wall of a power transmission high-voltage line are arranged at two ends of a current acquisition sensor group, and the electrical output of each current transformer is connected with the current acquisition sensor group; the transformer substation base station comprises a voltage stabilizing module electrically connected with a wireless transmission module, wherein the voltage stabilizing module is electrically output and connected with a current signal conditioning circuit module, the current signal conditioning circuit module is electrically output and connected with an MCU control module, the MCU control module is electrically input and connected with a photosensitive sensor group and a microwave sensor respectively, abnormal detection of current measurement can be completed, abnormal hidden dangers of current measurement can be found in time, a decision-making basis is provided for operators, a direct current blocking event caused by the fact that the current measurement degree is increased is avoided, and workers are helped to find a ground fault point and a short circuit fault rapidly and accurately.

Description

High-voltage line current abnormity detection device

Technical Field

The utility model relates to the technical field of high-voltage line current abnormity detection, in particular to a high-voltage line current abnormity detection device.

Background

In a high-voltage direct-current transmission project, an existing direct-current protection system judges whether a direct-current system fails or not through collecting electric quantities such as direct-current voltage, direct-current and the like and through the variation trend of the electric quantities, a high-voltage transmission line is an important component of a power system, the voltage of the high-voltage transmission line is generally above 110KV, the high-voltage transmission line has high danger, and certain technical difficulty is brought to data testing of lines. At present, the data testing and real-time monitoring technology of the high-voltage transmission line is still blank in China, the high-voltage transmission line is related to the power supply guarantee and the power supply safety of cities, the testing and monitoring of the line are very necessary, most of high-voltage transmission lines are in the field but not in the city, the space span is very large, the real-time monitoring cannot be carried out by purely using manual detection, huge manpower and material resources are consumed, therefore, a technology capable of testing line data and monitoring the line in real time is necessary, which not only can save manpower and material resources, but also can provide higher guarantee, however, the current high-voltage line lacks of a detection means for detecting the abnormality of the transmission current measurement, and even protection misoperation can be caused along with the aggravation of the abnormality degree of the current measurement, so that the current transmission is stopped, and even high-voltage electric shock accidents occur.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a high voltage line current abnormality detection apparatus to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-voltage line current abnormity detection device comprises a current collection sensor group which is uniformly and fixedly assembled on a transmission high-voltage line, wherein current transformers fixedly sleeved on the outer side wall of the transmission high-voltage line are arranged at two ends of the current collection sensor group, the electrical output of each current transformer is connected with the current collection sensor group, and the current collection sensor group and the current transformers are both in output connection with a substation base station through a wireless transmission module;

the transformer substation base station comprises a voltage stabilizing module electrically connected with a wireless transmission module, wherein the voltage stabilizing module is electrically connected with a current signal conditioning circuit module in an output mode, the current signal conditioning circuit module is electrically connected with an MCU control module in an output mode, the MCU control module is respectively electrically connected with a photosensitive sensor group and a microwave sensor in an input mode, and the MCU control module is electrically connected with a display module in an output mode.

Preferably, the current collection sensor groups are uniformly arranged along the length direction of the outer side wall of the power transmission high-voltage line at intervals, and four current sensor groups with the same structure are arranged in each current collection sensor group.

Preferably, the outer diameter of the current transformer is the same as the outer diameter of the current collection sensor group, the current transformer detects current signals, electromagnetic energy around the power transmission high-voltage line is converted into electric energy through the current transformer, and a stable power supply is provided for the current collection sensor group.

Preferably, the current sensor group monitors a current IDCH on a side of the high-voltage dc bus close to the converter valve, a current IDLH on a side of the high-voltage dc bus close to the line, a current IDCN on a side of the neutral bus close to the converter valve, and a current IDLN on a side of the neutral bus close to the ground electrode, respectively.

Preferably, the four sets of measured current values take the maximum value and the minimum value, and then the absolute value of the difference is used as the consistency of the four sets of currents.

Preferably, the microwave sensor corresponds to the microwave antenna, the substation base station is internally provided with a voice alarm module, and the substation base station is internally provided with an illuminating lamp corresponding to the photosensitive sensor group.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has reasonable design, the current acquisition sensor group and the current transformers are uniformly arranged on the transmission high-voltage line at intervals, high-voltage current monitoring can be carried out through the current acquisition sensor group, the power transformers can provide power supply for the current acquisition sensor group, simultaneously, the acquired current signals are transmitted to the voltage stabilizing module through the wireless transmission module to realize signal conversion of current and voltage, abnormal detection of current measurement can be completed, abnormal hidden dangers of current measurement can be found in time, a basis is provided for decision making of operating personnel, direct current blocking events caused by increased current measurement degree are avoided, the microwave inductor can receive signals returned by microwave antennas after being blocked by objects, when the wavelength changes, the object moving in a test range is represented, at the moment, the voice alarm module is started to prompt nearby objects to pay attention to safety, and the photosensitive sensor group can detect illumination brightness change, the on-off of the illuminating lamp can be controlled, illumination is convenient to realize, and workers are helped to quickly and accurately find out the grounding fault point and the short-circuit fault.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a working principle diagram of the present invention.

In the figure: 1. a power transmission high-voltage line; 2. a current collection sensor group; 3. a current transformer; 4. a wireless transmission module; 5. a substation base station; 6. a voltage stabilization module; 7. a current signal conditioning circuit module; 8. an MCU control module; 9. a photosensitive sensor group; 10. a microwave inductor; 11. and a display module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a high-voltage line current abnormity detection device comprises a current collection sensor group 2 uniformly and fixedly assembled on a power transmission high-voltage line 1, wherein two ends of the current collection sensor group 2 are respectively provided with a current transformer 3 fixedly sleeved on the outer side wall of the power transmission high-voltage line 1, the current transformers 3 are electrically connected with the current collection sensor group 2 in an output mode, and the current collection sensor group 2 and the current transformers 3 are respectively connected with a substation base station 5 in an output mode through a wireless transmission module 4;

the transformer substation base station 5 comprises a voltage stabilizing module 6 electrically connected with the wireless transmission module 4, the voltage stabilizing module 6 is electrically output and connected with a current signal conditioning circuit module 7, the current signal conditioning circuit module 7 is electrically output and connected with an MCU control module 8, the MCU control module 8 is respectively electrically input and connected with a photosensitive sensor group 9 and a microwave sensor 10, and the MCU control module 8 is electrically output and connected with a display module 11.

The current collection sensor groups 2 are uniformly arranged along the length direction of the outer side wall of the power transmission high-voltage wire 1 at intervals, and four groups of current sensor groups with the same structure are arranged in the current collection sensor groups 2, so that the uniform current detection can be realized on the power transmission high-voltage wire 1, and the detection comprehensiveness is improved;

the outer diameter of the current transformer 3 is the same as that of the current collection sensor group 2, the current transformer 3 detects a current signal, and electromagnetic energy around the power transmission high-voltage wire 1 is converted into electric energy through the current transformer 3, so that a stable power supply is provided for the current collection sensor group 2;

the current sensor group respectively monitors a current IDCH at the side of the high-voltage direct current bus close to the converter valve, a current IDLH at the side of the high-voltage direct current bus close to the line, a current IDCN at the side of the neutral bus close to the converter valve and a current IDLN at the side of the neutral bus close to the ground electrode;

taking the maximum value and the minimum value from the four groups of measured current values, and then using the absolute value of the difference value as the consistency of the four groups of currents;

the microwave inductor 10 corresponds to the microwave antenna, the voice alarm module is arranged in the transformer substation base station 5, and the illuminating lamp corresponding to the photosensitive sensor group 9 is arranged in the transformer substation base station 5, so that the working personnel can be helped to quickly and accurately find out a ground fault point and a short-circuit fault when current abnormity occurs.

The working principle is as follows: the current collection sensor group 2 and the current transformers 3 are uniformly arranged on the power transmission high-voltage wire 1 at intervals, high-voltage current monitoring can be carried out through the current collection sensor group 2, the power transformers 3 can provide power supply for the current collection sensor group 2, collected current signals are transmitted to the voltage stabilizing module 6 through the wireless transmission module 4 to realize signal conversion of current and voltage, leveling processing of circuit signals is realized through the current signal conditioning circuit module 7 to ensure stability of signals, then the MCU control module 8 can calculate and process the collected current according to the collected current, abnormal detection of current measurement is completed, abnormal hidden dangers of current measurement can be found in time, a basis is provided for decision making of operators, direct current locking events caused by increase of current measurement degree are avoided, and the microwave inductor 10 can receive signals which are sent by a microwave antenna and are blocked by objects and returned, when the wavelength changes, the object moving in the test range is indicated, the voice alarm module is started at the moment, the nearby object is prompted to pay attention to safety, the photosensitive sensor group 10 can detect the illumination brightness change, the illumination lamp can be controlled to be turned on and off, illumination is convenient to achieve, and workers are helped to quickly and accurately find out the grounding fault point and the short-circuit fault.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-voltage line current abnormity detection device is characterized in that: the transformer substation high-voltage line monitoring system comprises a current collection sensor group (2) uniformly and fixedly assembled on a power transmission high-voltage line (1), wherein current transformers (3) fixedly sleeved on the outer side wall of the power transmission high-voltage line (1) are arranged at two ends of the current collection sensor group (2), the current transformers (3) are electrically connected with the current collection sensor group (2) in an output mode, and the current collection sensor group (2) and the current transformers (3) are connected with a substation base station (5) in an output mode through a wireless transmission module (4);

the transformer substation base station comprises a voltage stabilizing module (6) electrically connected with a wireless transmission module (4), wherein the voltage stabilizing module (6) is electrically output and connected with a current signal conditioning circuit module (7), the current signal conditioning circuit module (7) is electrically output and connected with an MCU control module (8), the MCU control module (8) is respectively electrically input and connected with a photosensitive sensor group (9) and a microwave sensor (10), and the MCU control module (8) is electrically output and connected with a display module (11).

2. The high-voltage line current abnormality detection device according to claim 1, characterized in that: the current collection sensor group (2) is uniformly arranged along the length direction of the outer side wall of the power transmission high-voltage wire (1) at intervals, and four current sensor groups with the same structure are arranged in the current collection sensor group (2).

3. The high-voltage line current abnormality detection device according to claim 2, characterized in that: the current transformer (3) external diameter size is the same with current acquisition sensor group (2) external diameter, current transformer (3) detect current signal, and convert the electromagnetic energy around transmission of electricity high-voltage line (1) into the electric energy through current transformer (3), provide stable power for current acquisition sensor group (2).

4. A high-voltage line current abnormality detection apparatus according to claim 3, characterized in that: the current sensor group respectively detects a current IDCH at the side of the high-voltage direct current bus close to the converter valve, a current IDLH at the side of the high-voltage direct current bus close to the line, a current IDCN at the side of the neutral bus close to the converter valve and a current IDLN at the side of the neutral bus close to the ground electrode.

5. The high-voltage line current abnormality detection device according to claim 4, characterized in that: the maximum value and the minimum value are taken from the four groups of measured current values, and then the absolute value of the difference value is used as the consistency of the four groups of currents.

6. The high-voltage line current abnormality detection device according to claim 1, characterized in that: the microwave inductor (10) corresponds to the microwave antenna, the voice alarm module is arranged in the transformer substation base station (5), and the illuminating lamp corresponding to the photosensitive sensor group (9) is arranged in the transformer substation base station (5).