CN206378540U - A kind of portable anti-electricity-theft on-Line Monitor Device - Google Patents

Abstract

The utility model relates to a portable anti-stealing electricity on-line monitoring device, comprising a clamp current sensor, a sampling circuit, a control circuit, a charging module, a GPRS module and a master station system, the clamp current sensor is electrically connected to the sampling circuit, The sampling circuit is electrically connected to the control circuit and the charging module, the control circuit is electrically connected to the GPRS module, the GPRS module is electrically connected to the main station system, and the charging module includes a charging circuit, a lithium battery and a voltage stabilizing circuit, the charging circuit is electrically connected to the lithium battery and the voltage stabilizing circuit, the lithium battery is electrically connected to the voltage stabilizing circuit, and the voltage stabilizing circuit is respectively connected to the sampling circuit, the control circuit and the GPRS module are electrically connected to each other. The portable anti-stealing online monitoring device, after installation, finds the phenomenon of electricity theft, and after solving the problem, the equipment can be withdrawn and used on other lines that need to be checked. It can be used on demand, once put into use and reused.

Description

A portable anti-stealing online monitoring device

technical field

The utility model relates to the technical field of electric power, in particular to a portable on-line monitoring device for preventing electricity theft.

Background technique

At present, there are two implementation methods to investigate the stealing behavior on the power supply line:

1. Fixedly install an abnormal current monitoring device on the line;

2. Manual inspection.

Working principle of existing technology:

1. Fixedly installed current abnormality monitoring device: This device is fixedly installed on the line. It needs to be connected to 220V mains power from the line to collect current data on the line, and then send the data to the concentrator through wireless networking, and then pass the concentrator. All data is sent to the master station, and it is judged whether there is electricity theft according to the abnormal current on the line.

2. Manual inspection and inspection: manually inspect the power supply line, judge with the naked eye whether there is any unauthorized wiring on the line, and check whether there is a problem with the metering device through instruments and meters, so as to judge whether there is electricity theft.

Problems and shortcoming of existing technology:

1. Problems and shortcomings of the fixedly installed current anomaly monitoring device:

a) It must be fixedly installed on the line under test, without its own power supply, it must be connected to the power supply from the line under test, and cannot be used portablely.

b) The workload of the installation process is very large, and power outages must be performed, which affects the reliability of power supply.

c) Because it is the working node of the line under test, once the equipment fails, it will cause the entire line to be powered off, which will affect the reliability of power supply again.

d) There is no independent remote data transmission channel, and it must rely on third-party equipment installed on the side of the distribution transformer to transmit the collected data to the background master station.

e) Because it cannot be reused, the overall investment cost increases.

2. Problems and shortcomings of manual inspection:

a) Manual visual inspection requires heavy workload and high labor cost.

b) Generally, the wiring methods of stealing electricity are concealed, and the wiring is done in a place where outsiders cannot see, and manual investigation is likely to cause blind spots in the investigation.

c) Generally, electricity theft occurs at night after the staff get off work, and returns to normal during the day, which increases the complexity of manual investigation.

Utility model content

The purpose of this utility model is to provide a portable anti-stealing online monitoring device to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a portable anti-stealing online monitoring device, including a clamp current sensor, a sampling circuit, a control circuit, a charging module, a GPRS module and a master station system, the clamp current The sensor is electrically connected to the sampling circuit, the sampling circuit is electrically connected to the control circuit and the charging module, the control circuit is electrically connected to the GPRS module, and the GPRS module is electrically connected to the master station system, so The charging module includes a charging circuit, a lithium battery and a voltage stabilizing circuit, the charging circuit is electrically connected to the lithium battery and the voltage stabilizing circuit, the lithium battery is electrically connected to the voltage stabilizing circuit, and the voltage stabilizing circuits are respectively It is electrically connected with the sampling circuit, the control circuit and the GPRS module.

Preferably, the control circuit adopts STM-32 chip.

Preferably, the sampling circuit adopts TS5A23166 chip.

Preferably, the charging circuit uses a TP4057 chip as the charging control chip.

Preferably, the voltage stabilizing circuit adopts TP371701 chip.

Preferably, the GPRS module uses a SIM900A chip.

Compared with the prior art, the beneficial effects of the utility model are:

1. The appearance is small and exquisite, and the installation is convenient and quick.

2. After installation, electricity theft phenomenon is found, and after the problem is solved, the equipment can be withdrawn and used on other lines that need to be checked, so that it can be used on demand, once put into use, and reused.

3. Acquisition accuracy is high, acquisition frequency is high, in line with various field application environments.

4. Combined with the background master station program, the data transmission is timely and reliable.

5. Real-time online, without monitoring time blind spots and location blind spots.

Description of drawings

Fig. 1 is a block diagram of the working principle of the utility model.

FIG. 2 is a schematic cross-sectional view of a lithium battery.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Figures 1-2, it can be seen that the utility model provides a technical solution: a portable anti-stealing online monitoring device, including a clamp current sensor, a sampling circuit, a control circuit, a charging module, a GPRS module and a master station system. The clamp current sensor is electrically connected with the sampling circuit, and the clamp current transformer can also be replaced by a split residual current transformer. The sampling circuit uses a TS5A23166 chip as a range switching switch to receive the input signal of the transformer. OPA335 and LM331 chips carry out signal operation and amplification processing, and the sampling circuit is electrically connected with the control circuit and the charging module. The control circuit adopts STM-32 chip to control the normal operation of all functional parts and perform analog-to-digital conversion on the analog quantity , the control circuit is electrically connected with the GPRS module, the GPRS module is electrically connected with the main station system, the charging module includes a charging circuit, a lithium battery and a voltage stabilizing circuit, and the charging circuit is connected with the lithium battery and The voltage stabilizing circuits are electrically connected to each other. The charging circuit uses a TP4057 chip as a charging control chip to charge the lithium battery. The lithium battery is electrically connected to the voltage stabilizing circuit. The voltage stabilizing circuit uses a TP371701 chip to charge the lithium battery. The battery output voltage is stabilized so that the voltage meets the conditions of use of the circuit. The voltage stabilization circuit is electrically connected to the sampling circuit, the control circuit and the GPRS module. The GPRS module uses a SIM900A chip for mobile signal connection. Data transmission, GPRS module is 433M wireless module, ZIGBEE wireless module and other wireless transmission modules.

working principle:

1. Collect the current analog signal on the line under test through the clamp current sensor.

2. The residual current analog signal information is filtered through the sampling circuit, processed by the operational amplifier and passed to the AD conversion module (analog-to-digital conversion) of the control chip.

3. Convert the obtained current analog signal into a digital value through the AD conversion module (analog-to-digital conversion) of the control chip.

4. Send the current value to the main station server through the mobile base station through the GPRS module.

5. Through the master station system deployed on the master station server, analyze the collected current situation, and prepare to locate the stealing node when the electricity stealing occurs.

System Implementation Mode:

When it is found that a distribution transformer area needs online monitoring to check for electricity theft:

1. First install the utility model device to the point that needs to be monitored, and the installation method is as follows:

a) On the outlet side of the distribution transformer, install this device for each of the three phases A, B, and C to monitor the total current of each phase on the outlet side.

b) Install this device at the branch end of each phase line to monitor the current of each phase branch end.

c) Install this device at the end of each phase line to monitor the current at each phase end.

2. Turn on the monitoring device and run it. At this time, the monitoring device will send the collected data to the master station system according to the set transmission interval. Through the background algorithm, check whether the difference between the sum of the current data of each phase at the end and the current data of each phase at the branch end and the current data of each phase at the total outlet side is within the allowable error range. If it is within the error range, it is There is no power theft phenomenon on the line. If it exceeds the error range, it means that there is a power theft phenomenon on the line. Then, through the comparison with the measurement data of each meter, the end user point with the power theft phenomenon can be accurately checked and located.

The utility model can also have other embodiments. The technical problem solved by this embodiment is to solve the problem of battery failure caused by the movement of the battery core up and down, greatly supporting the occurrence of battery disconnection, and effectively improving the reliability of the lithium battery. The technical solution adopted in this embodiment is: the lithium battery includes a battery core 1, a core top insulating sheet 2 and an upper cover insulating sheet 3, and a support ring 4 is arranged between the core top insulating sheet 2 and the upper cover insulating sheet 3 . The support ring 4 is made of corrosion-resistant and PTFE material, and the support ring 4 is clamped between the core top insulating sheet 2 and the upper cover insulating sheet 3, which can prevent the battery core from moving up and down when the battery is subjected to strong vibration and impact to reduce the occurrence of battery disconnection and improve the reliability of lithium batteries.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (6)

1. a kind of portable anti-electricity-theft on-Line Monitor Device, including pincerlike current sensor, sample circuit, control circuit, charging Module, GPRS module and main station system, the pincerlike current sensor is electrically connected to each other with sample circuit, the sample circuit It is to be electrically connected to each other with control circuit and charging module, the control circuit is electrically connected to each other with GPRS module, the GPRS Module is electrically connected to each other with main station system, and the charging module includes charging circuit, lithium battery and mu balanced circuit, the charging Circuit is electrically connected to each other with lithium battery and mu balanced circuit, and the lithium battery is electrically connected to each other with mu balanced circuit, the voltage stabilizing Circuit is electrically connected to each other with sample circuit, control circuit and GPRS module respectively.

2. the portable anti-electricity-theft on-Line Monitor Device of one kind according to claim 1, it is characterised in that：The control circuit Using STM-32 chips.

3. the portable anti-electricity-theft on-Line Monitor Device of one kind according to claim 1, it is characterised in that：The sample circuit Using TS5A23166 chips.

4. the portable anti-electricity-theft on-Line Monitor Device of one kind according to claim 1, it is characterised in that：The charging circuit Charge controlling chip is used as using TP4057 chips.

5. the portable anti-electricity-theft on-Line Monitor Device of one kind according to claim 1, it is characterised in that：The mu balanced circuit Using TP371701 chips.

6. the portable anti-electricity-theft on-Line Monitor Device of one kind according to claim 1, it is characterised in that：The GPRS module Using SIM900A chips.