A distribution transformer operating parameter monitoring system and method

Abstract

The present invention relates to the technical field of distribution transformer operation monitoring, and in particular to a distribution transformer operation parameter monitoring system and method, which includes a measuring unit for measuring relevant data of the distribution transformer; a display unit for displaying relevant data; a transmission unit for transmitting the measured relevant data to a remote device; and a remote access unit for remotely managing and accessing the relevant data transmitted by the transmission unit. The beneficial effect of the present invention is that through precise current and voltage measurement, combined with large-screen LED display and wireless data transmission technology, distribution network operation and maintenance personnel can monitor the operating status of the transformer in real time through smart phones, thereby significantly reducing the safety risks and costs of on-site operations and improving the operation and maintenance efficiency and economic benefits of power supply companies. In addition, the cloud monitoring function and multi-user access capability of the system further enhance the accessibility of data and the convenience of management.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution transformer operation monitoring, and in particular to a distribution transformer operation parameter monitoring system and method. Background Art

[0002] The existing distribution transformer area TTU monitoring terminals and metering automation systems have limitations in monitoring the operating parameters of distribution transformers. These systems can only monitor three-phase current and voltage, but cannot detect problems such as neutral point displacement, abnormal stray current and abnormal zero line voltage caused by three-phase load imbalance. The lack of these key data makes it impossible for distribution network operation and maintenance personnel to view monitoring data in real time on smartphones, nor can they intuitively judge the operating status of the transformer area on site. Therefore, when problems such as home appliances burning out, neutral lines being energized, and voltage being too high occur, maintenance personnel can only go to the site to use professional instruments for measurement after receiving customer complaints. This situation not only increases the inspection workload of the power supply station and increases the operational risks, but also leads to frequent vehicle travel, increasing the production costs of power supply companies. Therefore, there is an urgent need for a system that can monitor the operating parameters of distribution transformers in real time, remotely, and wirelessly to improve power supply safety, reduce maintenance costs, and enhance the economic benefits of power supply companies. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides the following technical solutions: a distribution transformer operating parameter monitoring system, comprising a measuring unit for measuring relevant data of the distribution transformer;

[0006] A display unit, used for displaying relevant data;

[0007] A transmission unit, used to transmit the measured relevant data to a remote device;

[0008] The remote access unit is used to remotely manage and access relevant data transmitted by the transmission unit.

[0009] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, the measuring unit includes at least one current transformer.

[0010] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, the accuracy level of the current transformer is 0.2S level.

[0011] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, the relevant data includes three-phase current and voltage data.

[0012] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, the display unit includes a large-screen LED AC digital ammeter and voltmeter.

[0013] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, the transmission unit is a wireless transmission unit.

[0014] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, the wireless transmission unit includes a DTU wireless data transmission module.

[0015] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, the DTU wireless data transmission module supports serial port remote communication and is based on 4G LTE-CAT1 DTU.

[0016] As a preferred solution of the distribution transformer operating parameter monitoring system of the present invention, wherein: the remote access unit includes a cloud monitoring DCWEB account management system;

[0017] Cloud monitoring DCWEB account management system is used to communicate with the display unit and transmission unit.

[0018] In a second aspect, the present invention provides the following technical solutions: a method for monitoring operating parameters of a distribution transformer, comprising installing a measurement unit on a distribution transformer;

[0019] Measuring relevant data of the distribution transformer by a measuring unit, wherein the relevant data includes three-phase current and voltage data;

[0020] Displaying relevant data via a display unit;

[0021] Wirelessly transmit the measured relevant data to a remote device via a transmission unit;

[0022] The remote access unit can be used to remotely manage and access the relevant data transmitted by the transmission unit.

[0023] Beneficial effects of the invention: The invention uses accurate current and voltage measurement, combined with large-screen LED display and wireless data transmission technology, to enable distribution network operation and maintenance personnel to monitor the operating status of transformers in real time through smart phones, thereby significantly reducing the safety risks and costs of on-site operations and improving the operation and maintenance efficiency and economic benefits of power supply companies. In addition, the system's cloud monitoring function and multi-user access capabilities further enhance data accessibility and management convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0025] Figure 1 This is the wiring diagram of the distribution transformer operating parameter monitoring system.

[0026] Figure 2 The flowchart of the method for monitoring the operating parameters of distribution transformers is shown in FIG. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figure 1 , which is the first embodiment of the present invention, provides a distribution transformer operating parameter monitoring system, which includes a measuring unit for measuring relevant data of the distribution transformer;

[0032] Furthermore, the relevant data includes three-phase current and voltage data.

[0033] Further, the measuring unit includes at least one current transformer.

[0034] It should be noted that the current transformer is installed via a stainless steel CT box.

[0035] Furthermore, the accuracy level of the current transformer is 0.2S level.

[0036] It should be noted that there are two current transformers of 0.2S class 50 / 5A and four current transformers of 0.2S class 400 / 5A.

[0037] A display unit, used for displaying relevant data;

[0038] Furthermore, the display unit includes a large-screen LED AC digital ammeter and voltmeter.

[0039] It should be noted that the large-screen LED AC digital ammeter and voltmeter can display current and voltage data in red and green respectively, and are clearly visible within a distance of 7 meters.

[0040] It should be further explained that the current measurement range is 5 items including a phase, b phase, C phase, neutral current, stray abnormal current, etc.; the voltage measurement range is 4 items including a phase, b phase, C phase, neutral abnormal voltage, etc. Furthermore, the large-screen LED AC digital voltmeter measures phase voltage 0-300V; the ammeter a, b, c, N phase 400 / 5A, stray current 50 / 5A.

[0041] A transmission unit, used to transmit the measured relevant data to a remote device, wherein the remote device includes a smart phone;

[0042] Furthermore, the transmission unit is a wireless transmission unit.

[0043] Furthermore, the wireless transmission unit includes a DTU wireless data transmission module.

[0044] Furthermore, the DTU wireless data transmission module supports serial port remote communication and is based on 4G LTE-CAT1DTU.

[0045] The remote access unit is used to remotely manage and access relevant data transmitted by the transmission unit.

[0046] Further, the remote access unit includes a cloud monitoring DCWEB account management system;

[0047] It should be noted that the DTU wireless data transmission module uses 4G LTE-CAT1 communication technology to wirelessly transmit data to the cloud monitoring DCWEB account management system.

[0048] The cloud monitoring DCWEB account management system is used to communicate with the display unit and the transmission unit. The cloud monitoring DCWEB account management system supports real-time display of data through web pages or WeChat applets, allowing distribution network patrol personnel to use mobile phone WeChat APP or computer WeChat to remotely monitor the operating parameters of distribution transformers.

[0049] Preferably, when the distribution network patrol personnel arrive at the site, they can directly view the data through the large-screen LED display on the system without having to climb the pole, reducing safety risks and operating costs. Furthermore, remote monitoring personnel can view the monitoring data at any time through the WeChat APP on their mobile phones or WeChat on their computers, achieving access without restrictions on the number of people.

[0050] See attached Figure 1 , provides a wiring diagram of the system. Specifically, the black lines on the left side of the figure represent the current loop, and the red lines represent the voltage loop. The current loop includes the current measurement of phase a, phase b, phase c and neutral line N, as well as the neutral point grounding (NPE); the voltage loop includes the voltage measurement of phase a, phase b, phase c and neutral line N. The measurement data of current and voltage are transmitted to the wireless data transmission module through the 485 communication protocol, and then the DTU wireless data transmission module sends the data to the cloud monitoring DCWEB account management system through the wireless network.

[0051] When used, the present invention comprises

[0052] In summary, the beneficial effect of the distribution transformer operating parameter monitoring system of the present invention is that through accurate current and voltage measurement, combined with large-screen LED display and wireless data transmission technology, distribution network operation and maintenance personnel can monitor the operating status of the transformer in real time through smart phones, thereby significantly reducing the safety risks and costs of on-site operations and improving the operation and maintenance efficiency and economic benefits of power supply companies. In addition, the cloud monitoring function and multi-user access capability of the system further enhance the accessibility of data and the convenience of management.

[0053] Example 2

[0054] Reference Figure 2 The second embodiment of the present invention provides a method for monitoring operating parameters of a distribution transformer, which includes:

[0055] S1. Install the measuring unit on the distribution transformer;

[0056] S2. measuring relevant data of the distribution transformer by a measuring unit, wherein the relevant data includes three-phase current and voltage data;

[0057] S3, displaying relevant data through a display unit;

[0058] S4, wirelessly transmitting the measured relevant data to a remote device through a transmission unit;

[0059] S5. Remotely manage and access relevant data transmitted by the transmission unit through the remote access unit.

[0060] In summary, the beneficial effect of the distribution transformer operation parameter monitoring scheme of the present invention is to obtain key data such as three-phase current and voltage in real time by installing a measurement unit on the transformer, and display it locally through a display unit, and transmit these data to a remote device using wireless transmission technology, so that operation and maintenance personnel can remotely manage and monitor data through a remote access unit. This method not only improves the real-time and accuracy of monitoring, but also reduces the need for on-site operations, reduces safety risks, improves operation and maintenance efficiency, and ultimately achieves a significant improvement in the economic benefits of power supply companies.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A distribution transformer operating parameter monitoring system, characterized in that: include, A measuring unit, used for measuring relevant data of the distribution transformer; A display unit, used for displaying the relevant data; A transmission unit, used for transmitting the measured relevant data to a remote device; A remote access unit is used for remotely managing and accessing the relevant data transmitted by the transmission unit.

2. The distribution transformer operating parameter monitoring system according to claim 1, characterized in that: The measuring unit includes at least one current transformer.

3. The distribution transformer operating parameter monitoring system according to claim 2, characterized in that: The accuracy level of the current transformer is 0.2S.

4. The distribution transformer operating parameter monitoring system according to claim 4, characterized in that: The relevant data includes three-phase current and voltage data.

5. The distribution transformer operating parameter monitoring system according to claim 4, characterized in that: The display unit includes a large-screen LED AC digital ammeter and voltmeter.

6. The distribution transformer operating parameter monitoring system according to claim 5, characterized in that: The transmission unit is a wireless transmission unit.

7. The distribution transformer operating parameter monitoring system according to claim 6, characterized in that: The wireless transmission unit includes a DTU wireless data transmission module.

8. The distribution transformer operating parameter monitoring system according to claim 7, characterized in that: The DTU wireless data transmission module supports serial port remote communication and is based on 4G LTE-CAT1 DTU.

9. The distribution transformer operating parameter monitoring system according to any one of claims 1 to 8, characterized in that: The remote access unit includes a cloud monitoring DCWEB account management system; The cloud monitoring DCWEB account management system is used to communicate with the display unit and the transmission unit.

10. A method for monitoring operating parameters of a distribution transformer, characterized in that: include, Install the measuring unit on the distribution transformer; Measuring relevant data of the distribution transformer by a measuring unit, wherein the relevant data includes three-phase current and voltage data; Displaying the relevant data via a display unit; Wirelessly transmitting the measured relevant data to a remote device via a transmission unit; The related data transmitted by the transmission unit is remotely managed and accessed through a remote access unit.

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