CN111564899A - A remote control system for power transformer oil purifier - Google Patents

Abstract

The invention relates to the field of power information monitoring systems, and particularly discloses a remote regulation and control system of an oil filter of a power transformer, which comprises: the system comprises a data acquisition module, a network video recorder, a video monitoring module, a PLC (programmable logic controller), an A/D (analog/digital) module, an alarm module, a communication module, a cloud end and a mobile end; the PLC controller is connected with the data acquisition module, the network video recorder and the A/D module respectively, the network video recorder is connected with the video monitoring module, the A/D module is connected with the communication module, the communication module is in wireless connection with the cloud end, and the cloud end is in wireless connection with the mobile terminal. According to the invention, a PLC remote control system is added on the basis of the original relay control of the oil filter, so that the internal parameters of the oil filter are monitored in real time, and the self-repairing capability of the oil filter when a fault occurs is enhanced. The internal parameters of the oil filter and the video monitoring data are uploaded to the cloud end in real time through a mobile network, and various real-time parameters can be checked through terminals such as a mobile phone and a notebook computer, so that remote monitoring is realized, and manual inspection is eliminated.

Description

A remote control system for power transformer oil purifier

technical field

The invention relates to the field of power information monitoring systems, in particular to a remote control system for a power transformer oil filter.

Background technique

With the continuous development of smart grid technology, the requirements for the stability and safety of power system operation are getting higher and higher. As an important device for changing voltage, transformers are mostly used in substations, power plants, operating lines and other places, and the area covered by them is expanding. Among them, transformer oil can play the role of insulation, heat dissipation, arc suppression, etc. Various existing transformers are improved by using transformer oil to achieve efficient use of equipment. Since the temperature of the equipment increases during operation, the transformer oil contacts with oxygen under the action of high temperature and electric field to form insoluble colloid, which will reduce the insulation performance of the transformer.

In order to solve the problem of insoluble gum, an oil filter is used to filter the transformer oil. However, since the oil purifier will continue to work in the outdoor environment, in order to ensure the safe operation of the oil purifier, the staff must guard the oil purifier for a long time to prevent a series of failures such as oil leakage, and the entire oil filtration time is long and noisy It is relatively large and affects the health of the staff in a complex environment. Therefore, it is very important to save the operation and maintenance cost and improve the monitoring accuracy of the oil filter by changing the monitoring method of the oil filter.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a remote control system for a power transformer oil purifier, thereby overcoming the defect that the staff must stay beside the oil purifier for a long time when the oil purifier filters the transformer oil.

In order to achieve the above purpose, the present invention provides a remote control system for a power transformer oil filter, including: a data acquisition module, a network hard disk video recorder, a video monitoring module, a PLC controller, an A/D module, an alarm module, a communication module, Cloud and mobile terminal; the PLC controller is respectively connected with a data acquisition module, a network hard disk video recorder and an A/D module, the network hard disk video recorder is connected with the video monitoring module, and the A/D module is connected with the communication module , the communication module is wirelessly connected to the cloud, and the cloud is wirelessly connected to the mobile terminal;

The data acquisition module is used to collect the vacuum degree, heating temperature, inlet and outlet flow, valve opening, liquid level and pressure of the vacuum tank when the oil purifier filters the oil of the power transformer;

The video monitoring module is used to monitor three sets of video data, the first data is to monitor the operation control panel image of the oil purifier, the second data is to monitor the transformer oil outlet and the half-width image of the high voltage side of the transformer, and the third data is to monitor the transformer oil inlet and transformer. Half-frame image on the low-voltage side;

The PLC controller is used to compare the data of the data acquisition module with its internal storage data, and if the parameters are all in line with normal values, transmit the data collected by the data acquisition module and the video monitoring module to the cloud, and receive the data at the same time. The operation instruction transmitted by the cloud controls the execution of the oil filter;

The mobile terminal is used to view the collected oil filter data and video data through the cloud, and to send operation instructions to the oil filter.

Preferably, in the above technical solution, a console is also included, the console includes a relay control panel and a PLC control panel, the relay control panel is connected to the control end of the oil filter and the network hard disk video recorder, and the PLC control panel is connected to The PLC controller is also provided with a PLC interface.

Preferably, in the above technical solution, the network hard disk video recorder has a built-in 2T storage capacity.

Preferably, in the above technical solution, the data acquisition module is further used to collect the internal parameters of the oil filter, fault information and the node diagram of the oil filter.

Preferably, in the above technical solution, the operation instructions sent by the mobile terminal to the oil purifier include a control valve opening instruction, an oil purifier heating temperature instruction, and an inlet and outlet flow instruction.

Preferably, in the above technical solution, the pipeline valves of the oil filter are marked.

Preferably, in the above technical solution, the cloud is provided with a simplified diagram of the oil filter pipeline, the simplified diagram of the oil filter pipeline identifies each valve position and page label, and the mobile terminal controls each oil filter respectively through the page label. The opening degree of the pipeline valve.

Preferably, in the above technical solution, when the PLC controller analyzes that the parameters of the oil filter deviate from normal values, it controls the corresponding regulator inside the oil filter to make corresponding actions, and the PLC controls the The controller detects and compares the adjusted data with its internal storage data to determine whether the adjustment is successful. If the PLC controller determines that the adjustment is not successful, it will continue to adjust, and the alarm module will send an alarm to the device through the communication module. the cloud; if the regulator of the oil filter is successfully adjusted, the communication module will send an alarm to the cloud, and the PLC controller will send the adjustment information and fault point information from the communication module to the cloud. cloud.

Preferably, in the above technical solution, the communication module has a built-in SIM card to transmit data to the cloud using a mobile transmission network.

Compared with the prior art, the present invention has the following beneficial effects:

1. The remote control system of the power transformer oil purifier in the present invention takes PLC as the control core unit, and the data acquisition module collects data such as temperature, inlet and outlet flow, valve opening, pressure, etc. of each node in the oil purifier. , transmit it to the PLC intelligent control system for data processing and analysis, and control the heating power, valve opening, and oil filter flow of each node of the oil filter according to the analysis results. At the same time, the collected data and feedback are transmitted to the cloud through the communication module. It can log in to the cloud through terminals such as mobile phones and laptops to realize remote monitoring and operation of the oil filter. When there is an abnormality, a warning signal will be issued. The system can accurately measure various parameters of the oil purifier, monitor the long-term working state and working environment of the oil purifier, prevent potential threats and save human resources.

2. The present invention introduces a fault handling program. When an abnormality occurs, it can communicate with the PLC control system. After processing and analysis by the PLC intelligent control system, the oil purifier can be automatically controlled to make corresponding fault handling, realize automatic control, and automatically and timely respond to system instability. damage caused by time, and upload the troubleshooting information to the cloud to be able to view it in real time.

3. The present invention adds PLC automatic control mode under the existing relay operation mode of the oil filter, realizes automatic control with PLC, realizes on-site operation control with relay, and realizes the real-time control of the oil filter valve by the host computer. When the PLC control system fails, the relay can be used to realize on-site control. In the two control modes, the relay control system has a higher priority.

4. In the present invention, three sets of video surveillance are installed near the oil outlet and the oil inlet of the oil filter, which are used to monitor the on-site working conditions, and are transmitted to the cloud through the base station network, so that the staff can view the oil filter in real time through the mobile terminal. run. Among them, the network hard disk video recorder (NVR) has built-in storage capacity. When the video monitoring module uploads the data to the cloud, the NVR stores the video to the built-in hard disk. When the NVR's built-in storage capacity is full, the newly recorded video will cover the earliest recorded video. video for efficient use of resources.

Description of drawings

FIG. 1 is a system architecture diagram of a remote control system for a power transformer oil filter according to the present invention.

FIG. 2 is a diagram of the on-site control panel of the present invention.

Fig. 3 is the PLC control flow chart of the present invention.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

As shown in Figure 1 and Figure 2, the remote control system of the power transformer oil filter in this embodiment includes: a data acquisition module, a network hard disk video recorder, a video monitoring module, a PLC controller, an A/D module, an alarm module, Communication module, cloud and mobile terminal. In this embodiment, a console is added, and the console includes a relay control panel and a PLC control panel, and the oil purifier is jointly controlled by the relay control mode and the PLC control mode. The relay control panel is connected to the control end of the oil filter and the network hard disk video recorder, and the PLC control panel is connected to the PLC controller and has a PLC interface. The PLC controller can be programmed online through the PLC interface, and the control program and fault handling program of the PLC controller can be optimized. The relay control panel will directly operate the oil filter through the buttons on the panel, and the relay operation priority will be higher than the PLC control. The PLC control panel will directly control each valve, temperature, pressure, etc. in the oil filter by controlling the PLC controller. Therefore, PLC is used to realize automatic control, and relay is used to realize on-site operation control, so as to realize the real-time control of the oil filter pipeline valve by the host computer.

Continue to refer to Figure 1, Figure 2 and Figure 3, the PLC controller is respectively connected with the data acquisition module, the network hard disk video recorder and the A/D module, the network hard disk video recorder is connected with the video monitoring module, the A/D module is connected with the communication module, and the communication The module is wirelessly connected to the cloud, and the cloud is wirelessly connected to the mobile terminal. The data acquisition module is used to collect the vacuum degree, heating temperature, inlet and outlet flow, liquid level and pressure of the vacuum tank, internal parameters, fault information of the oil purifier and the node diagram of the oil purifier when the oil purifier filters the oil of the power transformer. , the data acquisition module will measure the temperature, pressure, inlet and outlet flow, valve opening and other data of the oil purifier, and through A/D conversion, transmit the output signal to the PLC controller for data processing and analysis, and communicate with the PLC controller. Compared with the internal storage data, when the parameters are in line with normal values, the information processed by the PLC controller will be transmitted to the cloud through the A/D module and the communication module.

In addition, as shown in Figure 2 and Figure 3, the fault handling program is loaded into the PLC controller through the PLC interface. The fault handling program is a self-checking action program in response to the failure of the oil filter, and the preset program is used to realize the fault handling capability. For example, when at least one of the parameters of the oil purifier deviates from the normal value, the fault handling program written into the PLC controller is triggered, and the corresponding regulator inside the oil purifier is automatically controlled to make corresponding actions, and the PLC The controller detects and compares the adjusted data with its internal storage data to determine whether the adjustment is successful. If the PLC controller determines that the adjustment is not successful, it will continue to adjust, and the alarm module will send an alarm to the cloud through the communication module. If the regulator of the machine is successfully adjusted, the overall system of the oil filter will return to normal, and the communication module will send an alarm to the cloud, and the PLC controller will send the adjustment information and fault point information to the cloud from the communication module.

The fault handling procedure includes: obtaining the difference between the parameter deviating from the normal value and the parameter of the normal value, converting the difference value into an adjustment command, and then sending the adjustment command to the corresponding regulator inside the oil filter, and the regulator adjusts.

Further, as shown in FIG. 2 , the video monitoring module is used to monitor three sets of video data, and the communication module uses the wireless network to transmit the data to the cloud to realize the entire monitoring process. Data 1 is the image of the operation control panel for monitoring the oil purifier, data 2 is the image of monitoring the oil outlet of the transformer and the half-width image of the high-voltage side of the transformer, and data 3 is the image of monitoring the oil inlet of the transformer and the half-width image of the low-voltage side of the transformer, using 3 sets of video monitoring The module monitors the working environment of the oil purifier, and transmits various data to the cloud through the wireless communication module equipped with the SIM card, so that the staff can control the oil purifier in an all-round way from a long distance. Among them, the network hard disk video recorder (NVR) has a built-in 2T storage capacity. When the video monitoring module uploads the data to the cloud, the NVR stores the video in the built-in hard disk. When the NVR's built-in storage capacity is full, the newly recorded video will cover the earliest recorded video. video to achieve efficient use of resources.

Further, the mobile terminal is used to view the collected oil filter data and video data through the cloud, and view the operating environment of the oil filter through the video monitoring module. The cloud video monitoring interface can simultaneously display 3 sets of video real-time information, and can display the real-time video information according to the page. Adjust to display 1 group, 2 groups, and 3 groups of video information respectively. The mobile terminal is also used to send operation instructions to the oil purifier through the cloud. The operation instructions include control valve opening instructions, oil purifier heating temperature instructions, and inlet and outlet flow instructions, etc., and then control valve opening, oil purifier heating temperature, etc. Therefore, the staff can connect to the cloud through mobile terminals such as mobile phones and laptops, and send corresponding instructions to the PLC controller through the mobile network to precisely control the valve opening, temperature controller, pressure controller, etc. Import and export flow controllers, etc. for each node.

In addition, the pipeline valves of the oil purifier are marked, and the valve opening is controlled according to the marking instructions. In the cloud, there is a simplified diagram of the oil filter pipeline. The simplified diagram of the oil filter pipeline identifies each valve position and page label. The mobile terminal controls the opening degree of each oil filter pipeline valve through the page label.

It is worth noting that the communication module has a built-in SIM card, and uses the mobile transmission network to transmit video data, various parameters inside the oil filter, and PLC-controlled valve opening parameters to the cloud.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many changes and modifications are possible in light of the above teachings. The exemplary embodiments were chosen and described for the purpose of explaining certain principles of the invention and their practical applications, to thereby enable one skilled in the art to make and utilize various exemplary embodiments and various different aspects of the invention. Choose and change. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims (9)

1. a remote control system of a power transformer oil filter, is characterized in that, comprises: data acquisition module, network hard disk video recorder, video monitoring module, PLC controller, A/D module, alarm module, communication module, cloud and mobile The PLC controller is respectively connected with the data acquisition module, the network hard disk video recorder and the A/D module, the network hard disk video recorder is connected with the video monitoring module, the A/D module is connected with the communication module, the The communication module is wirelessly connected to the cloud, and the cloud is wirelessly connected to the mobile terminal; The data acquisition module is used to collect the vacuum degree, heating temperature, inlet and outlet flow, valve opening, liquid level and pressure of the vacuum tank when the oil purifier filters the oil of the power transformer; The video monitoring module is used to monitor three sets of video data, the first data is to monitor the operation control panel image of the oil purifier, the second data is to monitor the transformer oil outlet and the half-width image of the high voltage side of the transformer, and the third data is to monitor the transformer oil inlet and transformer. Half-frame image on the low-voltage side; The PLC controller is used to compare the data of the data acquisition module with its internal storage data, and if the parameters are all in line with normal values, transmit the data collected by the data acquisition module and the video monitoring module to the cloud, and receive the data at the same time. The operation instruction transmitted by the cloud controls the execution of the oil filter; The mobile terminal is used to view the collected oil filter data and video data through the cloud, and to send operation instructions to the oil filter. 2. The remote control system of a power transformer oil filter according to claim 1, further comprising a console, the console comprising a relay control panel and a PLC control panel, and the relay control panel is connected to the oil filter The control end of the machine and the network hard disk video recorder, the PLC control panel is connected to the PLC controller and is provided with a PLC interface. 3 . The remote control system of the power transformer oil filter according to claim 1 , wherein the network hard disk video recorder has a built-in 2T storage capacity. 4 . 4 . The remote control system for a power transformer oil filter according to claim 1 , wherein the data acquisition module is also used to collect internal parameters, fault information and a node diagram of the oil filter. 5 . 5 . The remote control system of a power transformer oil filter according to claim 1 , wherein the operation instructions that the mobile terminal is used to send to the oil filter include control valve opening instructions, oil filter heating Temperature command and import and export flow command. 6 . The remote control system of the power transformer oil purifier according to claim 1 , wherein the pipeline valves of the oil purifier are labeled. 7 . 7. The remote control system of a power transformer oil purifier according to claim 6, wherein a simplified diagram of the oil purifier pipeline is provided in the cloud, and the simplified oil purifier pipeline diagram identifies each valve position and page label, the mobile terminal controls the opening degree of each oil filter pipeline valve through the page label. 8. The remote control system of a power transformer oil filter according to claim 2, wherein when the PLC controller analyzes that the parameters of the oil filter deviate from normal values, it controls the oil filter The corresponding internal regulator makes corresponding actions, and the PLC controller detects and compares the adjusted data with its internal storage data to determine whether the adjustment is successful. If the PLC controller determines that the adjustment is not successful, the adjustment is continued. At the same time, the alarm module sends an alarm to the cloud through the communication module; if the regulator of the oil filter is successfully adjusted, the communication module sends an alarm to the cloud, and the PLC controller sends an alarm to the cloud. The adjustment information and the fault point information are sent to the cloud by the communication module. 9 . The remote control system for a power transformer oil purifier according to claim 1 , wherein the communication module has a built-in SIM card to transmit data to the cloud using a mobile transmission network. 10 .

Images