CN111028499A

CN111028499A - Intelligent integration terminal for Internet of things platform area and data acquisition and processing method thereof

Info

Publication number: CN111028499A
Application number: CN201911110583.2A
Authority: CN
Inventors: 魏浩铭; 王成伟; 胡兵; 李丹祥; 孙青松; 毛献区
Original assignee: Zhuhai XJ Electric Co Ltd
Current assignee: Zhuhai XJ Electric Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-04-17

Abstract

The utility model provides a thing networking platform district intelligent fusion terminal includes: the metering chip is coupled with a power grid of the low-voltage transformer area through a precision mutual inductor to measure the three-phase voltage, the current corresponding to the three-phase voltage and the total residual current of the transformer area of the low-voltage transformer area; the processor is connected with the metering chip through the SPI bus to receive the measuring data generated by the metering chip; the three-phase PLC router group is connected with the precision mutual inductor in parallel to a power grid of the low-voltage transformer area and is connected with the transformer area intelligent meter through a carrier interface; wherein the processor communicates with the wireless local area network via the wireless communication interface and communicates with the near-end low-voltage device via the local communication interface; the processor respectively generates distribution transformer monitoring data, distribution area general table data and user distribution area electric meter charging data of the low-voltage distribution area based on the measurement data. The disclosure also provides a data acquisition and processing method, a computer system and a storage medium based on the Internet of things platform region intelligent fusion terminal.

Description

Intelligent integration terminal for Internet of things platform area and data acquisition and processing method thereof

Technical Field

The utility model relates to a monitoring and collection equipment of low pressure platform district, especially relate to an thing networking platform district intelligent fusion terminal and data acquisition method thereof.

Background

Currently, the monitoring and acquisition terminals used for standard distribution in 0.4kV or below low-voltage distribution areas in China generally have the following three types: the intelligent ammeter charging and reading system comprises a distribution transformer monitoring terminal for monitoring the operation of a distribution transformer, a distribution area general table for checking the line loss of the distribution area and a concentrator for charging and reading the intelligent ammeter of a user distribution area. In order to conveniently monitor the low-voltage transformer area, particularly real-time monitoring, the three types of equipment are generally arranged near a distribution transformer of the low-voltage transformer area.

However, the arrangement of these monitoring and acquisition type terminals mainly has the following problems. Firstly, the three types of terminals belong to the daily operation and maintenance management range of power supply companies, so that the operation and maintenance workload of related equipment is large, and three-in-one realization is necessary by combining and fusing technical means to reduce related cost. Secondly, the functional differences of the three types of terminals are mainly embodied in functional software, electric quantity acquisition precision and a communication protocol, and the possibility of realizing three-in-one through electric quantity acquisition optimization and software system upgrading exists. Thirdly, the distribution transformer monitoring terminal and the transformer area assessment summary table are generally matched with at least 3 current transformers; however, due to the fact that the field space is narrow, when 6 power transformers are arranged in the same occasion, installation becomes very difficult, on one hand, installation problems need to be solved through fusion design by constructors, and on the other hand, the situation that monitoring data do not correspond to each other exists. Finally, the three types of terminals have high cost and certain repetition in functions, thereby causing resource waste.

National grid companies have published ubiquitous power internet of things technical routes to build a three-type two-network target. The low-voltage distribution area equipment fusion and data fusion sharing are realized through the Internet of things communication technology and the software defined terminal technology.

Disclosure of Invention

The utility model provides an thing networking platform district intelligence fusion terminal and data acquisition method thereof, aims at merging the function of above-mentioned three kinds of standard distribution terminals to a compound intelligent distribution transform terminal to alleviate the aforementioned problem that exists among the prior art.

In order to achieve the above object, the present disclosure adopts the following technical solutions.

First, the present disclosure provides an intelligent integrated terminal for an internet of things platform area, including: the device comprises a metering chip, a processor and a three-phase PLC router group. The metering chip is coupled with a power grid of a low-voltage transformer area through a precision mutual inductor to measure three-phase voltage of the low-voltage transformer area, and the three-phase voltage corresponds to current and total residual current of the transformer area. The processor is coupled to the metrology chip via the SPI bus to receive measurement data generated by the metrology chip. The three-phase PLC router group and the precision mutual inductor are connected to a power grid of the low-voltage transformer area in parallel, and are connected with the intelligent transformer area meter through a carrier interface. Wherein the processor communicates with the wireless local area network via the wireless communication interface and communicates with the near-end low voltage device via the in-place communication interface. The processor respectively generates distribution transformer monitoring data, distribution area general table data and user distribution area electric meter charging data of the low-voltage distribution area based on the measurement data.

In the above technical scheme of this disclosure, this thing networking platform district intelligence fuses terminal still includes and connects in parallel to the three-phase AC/DC power pack of the electric wire netting of this low-voltage platform district with this precision transformer and this three-phase PLC router group, three-phase AC/DC power pack includes the electric capacity module for this thing networking platform district intelligence fuses terminal continuous operation appointed time after alternating current power supply cuts off the power supply.

In the above technical scheme of this disclosure, this electric capacity module is 12V to make this thing networking platform district intelligent fusion terminal last operation for 3min at least after alternating current power supply cuts off the power supply.

In one or more of the above technical solutions of the present disclosure, the precision transformer includes a precision current transformer and a precision voltage transformer to cooperate with the metering chip to measure the three-phase voltage of the low-voltage transformer area, the three-phase voltage corresponding to the current and the total residual current of the transformer area.

In one or more of the above aspects of the disclosure, the wireless communication interface may be an ethernet interface extension to communicate with a power distribution automation system of a power grid. Alternatively, the wireless communication interface can be obtained by serial port expansion to communicate with a system for using the power grid.

In one or more of the above aspects of the disclosure, the in-place communication interface is RS232 and RS 485.

Secondly, the present disclosure also provides a data acquisition and processing method of the internet of things platform region intelligent fusion terminal based on any one of the above technical solutions, including the following steps:

s100) respectively initializing corresponding containers for distribution transformer monitoring data, distribution area general table data and user distribution area ammeter charging and reading data of the low-voltage distribution area;

s200) respectively sending distribution transformer monitoring data, distribution area general table data and user distribution area electric meter charging data of the low-voltage distribution area to corresponding containers through special interfaces;

s300) sending messages between the containers via a data exchange bus based on MQTT protocol.

In one above technical solution of the present disclosure, the step S100 further includes the following sub-steps: initializing a database storage container, and periodically backing up the distribution transformer monitoring data, the distribution area general table data and the user distribution area electric meter charging data of the low-voltage distribution area.

Again, the present disclosure proposes a computer system. The computer system includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes a program, the data acquisition method of the Internet of things platform area intelligent fusion terminal based on any one technical scheme is realized. The method may comprise the steps of:

In one above technical solution of the present disclosure, when the processor executes the program, the step S100 further includes the following sub-steps: initializing a database storage container, and periodically backing up the distribution transformer monitoring data, the distribution area general table data and the user distribution area electric meter charging data of the low-voltage distribution area.

Finally, the present disclosure proposes a storage medium. Wherein the storage medium has stored therein a computer program. The computer program is set as a data acquisition method of the Internet of things platform area intelligent fusion terminal based on any one of the technical schemes during running. The method may comprise the steps of:

In the above one aspect of the present disclosure, when the processor executes the program stored in the storage medium, the step S100 further includes the following sub-steps: initializing a database storage container, and periodically backing up the distribution transformer monitoring data, the distribution area general table data and the user distribution area electric meter charging data of the low-voltage distribution area.

The beneficial effect of this disclosure does: the number and types of low-voltage distribution area equipment are reduced by integrating the original three types of terminal equipment resources, so that the operation and maintenance workload is comprehensively reduced.

Drawings

Fig. 1 is a hardware system architecture diagram of an intelligent convergence terminal of an internet of things platform area according to an embodiment of the present application;

FIG. 2 is a flow chart of a method of data acquisition based on the hardware system architecture diagram shown in FIG. 1;

fig. 3 is a software system architecture diagram of an intelligent convergence terminal of an internet of things platform region according to an embodiment of the present application;

fig. 4 is a schematic diagram showing a specific structure of each container in fig. 3.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts. The following detailed description is merely exemplary in nature and is not intended to limit the disclosure or the application and uses thereof. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding background or the following detailed description.

Embodiments of the present disclosure are described herein. However, it is to be understood that the disclosed embodiments are merely exemplary, and that other embodiments may take various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. As will be appreciated by one of skill in the art, various features illustrated and described with reference to any one of the figures can be combined with features illustrated in one or more of the figures to produce embodiments that are not explicitly illustrated or described. The combination of features illustrated provides a representative embodiment of a typical application. However, various combinations and modifications of these features consistent with the teachings of the present disclosure may be desired for particular applications or implementations.

Certain terminology may be used in the following description for reference purposes only and is therefore not intended to be limiting. For example, terms such as "above" and "below" refer to directions referenced in the drawings. Terms such as "front," "back," "left," "right," "back," and "side" describe the orientation and/or position of various parts of a component or element within a consistent but arbitrary frame of reference that becomes apparent with reference to the text and associated drawings describing the component or element in question. Also, terms such as "first," "second," "third," and the like may be used to describe individual components. Such terms may include the words specifically mentioned above, derivatives thereof, and words of similar import.

Fig. 1 is a hardware system architecture diagram of an intelligent convergence terminal of an internet of things platform region according to an embodiment of the present application. In an embodiment of the present disclosure, the internet of things platform zone intelligent fusion terminal includes: the device comprises a metering chip, a processor and a three-phase PLC router group. The metering chip is coupled with a power grid of a low-voltage transformer area through a precision mutual inductor to measure three-phase voltage of the low-voltage transformer area, and the three-phase voltage corresponds to current and total residual current of the transformer area. The processor is coupled to the metrology chip via the SPI bus to receive measurement data generated by the metrology chip. The three-phase PLC router group and the precision mutual inductor are connected to a power grid of the low-voltage transformer area in parallel, and are connected with the intelligent transformer area meter through a carrier interface. Wherein the processor communicates with the wireless local area network via the wireless communication interface and communicates with the near-end low voltage device via the in-place communication interface. The processor respectively forms distribution transformer monitoring data, distribution area general table data and user distribution area electric meter charging data of the low-voltage distribution area based on the measurement data. In one or more embodiments of the present disclosure, the terminal ac output of the low-voltage station area is 7, i.e., three voltages and four currents corresponding to three-phase voltages. The four currents are three currents corresponding to the three-phase voltage and the total residual current of the transformer area respectively. The total residual current of the transformer area is collected by a special channel so as to monitor the leakage current of the transformer area.

With continued reference to fig. 1, in one or more embodiments of the present disclosure, the internet of things platform intelligent convergence terminal may be powered by a three-phase voltage of a power grid. Specifically, the internet of things platform zone intelligent fusion terminal is provided with a three-phase AC/DC power supply set which is connected with the precision mutual inductor and the three-phase PLC router set in parallel to the power grid of the low-voltage platform zone, and the three-phase AC/DC power supply set is responsible for power supply of the internet of things platform zone intelligent fusion terminal. After any two-phase power is cut off, the three-phase AC/DC power pack can still keep normal work, so that maintenance personnel in a low-voltage platform area have enough time to process the power failure. Generally, the capacitor module can be 12V, so that the intelligent integration terminal of the internet of things station area can still continuously operate for at least 3min under the condition that the three-phase alternating voltage is completely cut off.

In one or more embodiments of the present application, the precision transformer includes a precision current transformer and a precision voltage transformer to cooperate with the metering chip to measure a three-phase voltage of the low-voltage platform area, the three-phase voltage corresponding to a current and a total residual current of the platform area. Wherein, the measuring range of the precision current transformer preferably satisfies 0.2 grade and the phase shift is not more than 10'. Similarly, the precision voltage transformer preferably satisfies 0.2 steps and a phase shift of not more than 10' within the measurement range. At the moment, the measuring chip can be used as a terminal high-precision testing unit to realize terminal high-precision measurement so as to meet the requirement of the measurement precision of the distribution room general table. In one or more embodiments of the present application, the metering chip and the processor interact using a high-speed SPI bus.

And transmitting the distribution transformer monitoring data of the low-voltage transformer area, the transformer area general table data and the user transformer area electric meter charging data generated by the acquisition and processing to a wireless local area network or a near-end low-voltage device by a processor. In one or more embodiments of the present application, the wireless communication interface may be obtained by extending an ethernet interface, and is used to implement high-speed communication between the intelligent convergence terminal of the internet of things and the operation and maintenance management system (i.e., a distribution automation system). Alternatively, the wireless communication interface can also be obtained by serial port extension, and the interface realizes slow communication between the terminal and a meter reading and charging system (namely a sampling system). The two types of wireless communication interfaces can be independent from each other and simultaneously control the power distribution automation system and the communication of the two wireless local area networks adopting the system. In one or more embodiments of the present application, each internet of things platform zone intelligent convergence terminal may be provided with 4 local communication interfaces. The local communication interfaces can mainly be RS232 and RS485, and are used for realizing communication with low-voltage equipment (such as an energy residual current protector, an intelligent reactive compensation device and the like) at the near end of the local Internet of things intelligent distribution transformer terminal. In addition, the intelligent integrated terminal of the internet of things platform area can be further provided with 2 paths of 100/10M self-adaptive Ethernet ports so as to meet the requirements of terminal local debugging, optical fiber communication, Ethernet data acquisition (such as video and picture information) and the like.

Referring to the method flowchart shown in fig. 2, in order to reuse existing monitoring and acquisition type terminal data acquisition and processing programs as much as possible, the present disclosure further provides a data acquisition and processing method based on the above-mentioned intelligent convergence terminal of the internet of things, including the following steps:

s100) respectively initializing corresponding containers for distribution transformer monitoring data of the low-voltage transformer area, transformer area general table data and user transformer area ammeter charging data;

The method can be implemented based on the software system architecture diagram shown in fig. 3, so that data of the intelligent convergence terminal in the internet of things area can be transmitted to a designated container through a specific interface, and isolation and reuse of application programs of different monitoring and acquisition terminals are achieved. Wherein, the first in FIG. 3The specific structure of the container, the second container, the third container, and the like can refer to fig. 4. As a typical example of virtualization technology, a container contains an application and necessary components (e.g., a system binary file and a library) for running the application, and applies for computer hardware resources located at the bottom of the system through a container engine (DockerEngine) running on a physical computer, respectively. The running applications within the container can be deployed, upgraded and uninstalled independently of the mechanical energy without coupling of the computer hardware resources. For containers, the underlying individual computer hardware resources (e.g., servers, storage devices, central processors, I/O ports, and network ports, etc.) can act as multiple logical resources that can be shared as a result of being virtualized. Meanwhile, the host Operating System (OS) may also provide further optimization for the interaction of the container engine and the underlying computer hardware resources. For example, the host OS may support applications of each monitoring and acquisition class terminal to share underlying computer hardware resources through the container, thereby implementing optimal configuration of resources. Some examples of which may be the host OS

And

furthermore, the container can significantly reduce the overall performance degradation of the host device relative to a virtual machine because its own operating system needs to dedicate more resources and contain more processing overhead. Meanwhile, the application programs running in each container can be interconnected and intercommunicated by adopting a uniform message interaction bus interface based on a message bus of an MQTT protocol, and decoupling of functions of the application programs is realized. In practical application, basic application programs for directly acquiring analog, digital and forwarding data of a hardware interface, data management service application programs for providing data sources for other high-level application programs without directly participating in business data processing, and high-level application programs for directly participating in micro application of business data processing and performing high-level analysis on basic data can be deployed in each container.

Further, in order to backup the data of the low-voltage platform area, in one or more embodiments of the present application, the step S100 may also initialize the database storage container at the same time when being executed. And the database storage container periodically backs up the distribution transformer monitoring data, the distribution area general table data and the user distribution area electric meter charging data of the low-voltage distribution area.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a thing networking platform district intelligent fusion terminal which characterized in that includes:

the metering chip is coupled with a power grid of a low-voltage transformer area through a precision mutual inductor to measure three-phase voltage of the low-voltage transformer area, and the three-phase voltage corresponds to current and total residual current of the transformer area;

a processor coupled with the metrology chip via an SPI bus to receive measurement data generated by the metrology chip;

the three-phase PLC router group is connected with the precision mutual inductor in parallel to a power grid of the low-voltage transformer area and is connected with the transformer area intelligent meter through a carrier interface;

wherein the processor communicates with a wireless local area network through a wireless communication interface and communicates with a near-end low-voltage device through a local communication interface; and the processor respectively generates distribution transformer monitoring data, distribution area general table data and user distribution area electric meter charging data of the low-voltage distribution area based on the measurement data.

2. The intelligent convergence terminal of the internet of things station zone of claim 1, further comprising a three-phase AC/DC power supply set connected in parallel with the precision transformer and the three-phase PLC router set to the power grid of the low-voltage station zone, wherein the three-phase AC/DC power supply set comprises a capacitor module, so that the intelligent convergence terminal of the internet of things station zone continuously operates for a specified time after an AC power supply is cut off.

3. The intelligent convergence terminal of the internet of things station zone of claim 2, wherein the capacitor module is 12V, and the intelligent convergence terminal of the internet of things station zone continuously operates for at least 3min after an alternating current power supply is powered off.

4. The intelligent convergence terminal of the internet of things station area according to claim 1, wherein the precision transformer comprises a precision current transformer and a precision voltage transformer so as to cooperate with the metering chip to measure a three-phase voltage, a three-phase voltage corresponding current and a total residual current of the station area of the low-voltage station area.

5. The IOT block intelligent convergence terminal of claim 1, wherein the wireless communication interface is an Ethernet interface extension to communicate with a distribution automation system of the power grid and/or a serial port extension to communicate with a utility system of the power grid.

6. The intelligent convergence terminal of the internet of things platform area of claim 1, wherein the local communication interfaces are RS232 and RS 485.

7. A data acquisition and processing method based on the Internet of things platform area intelligent fusion terminal of any one of claims 1-6 comprises the following steps:

8. The data acquisition and processing method according to claim 7, wherein said step S100 further comprises the sub-steps of:

initializing a database storage container, and periodically backing up distribution transformer monitoring data, distribution area general table data and user distribution area electric meter charging data of the low-voltage distribution area.

9. A computer system comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of claim 7 or 8 when executing the program.

10. A storage medium, wherein a computer program is stored in the storage medium, which computer program is arranged to perform the method as claimed in claim 7 or 8 when executed.