CN111665407A - A system and method for sub-item electric load identification - Google Patents

Abstract

The invention discloses a sub-item electric load identification system and method. The system includes a data acquisition module, a data analysis and management module, a data storage module, a multifunctional interaction module and a power management module; the data acquisition module is used for collecting the original load voltage and Total current data; the data analysis and management module estimates the power consumption of electrical equipment by processing the original load voltage and total current data, and extracts the required various current waveform characteristics for electrical equipment identification, and compares the identification results with the corresponding electrical equipment. The power estimation results of the equipment are associated; the data storage module is used to store the current waveform feature template information of the electrical equipment and the power estimation results of each electrical equipment; the multi-functional interaction module is used to receive external input information and display the corresponding information according to the input information. The power estimation result of the electrical equipment; the power management module provides the required power for the normal operation of the system. The invention constructs a low-cost sub-item electric load identification system.

Description

A system and method for sub-item electric load identification

technical field

The invention relates to a sub-item electric load identification system and method, and belongs to the technical field of intelligent electric power consumption.

Background technique

In recent years, with the development of my country's economy and the acceleration of urbanization, the area of large public buildings is growing rapidly, and the proportion of large public buildings with high energy consumption indicators in the total urban construction area is also increasing, and the grades are getting higher and higher. This results in the growth rate of electricity consumption in buildings is higher than the growth rate of total buildings. Therefore, it is of great significance to reduce the power consumption of large public buildings through energy management.

Recording and counting the total energy consumption of large public buildings is the basic requirement of energy management, but this total data can only understand the general situation of building energy consumption, and it is difficult to make judgments or draw conclusions based on this. The establishment of electricity consumption management system by implementing electric energy sub-item measurement is an effective way to fundamentally solve the problem.

At present, the sub-item metering system for electricity consumption in large public buildings adopts a multi-meter solution, and the ultimate solution is to install a special metering meter for each electrical equipment. Obviously, this solution requires more meters and thus higher system cost.

SUMMARY OF THE INVENTION

Aiming at the problems existing in sub-item electric quantity estimation, the present invention proposes a sub-item electric power load identification system and method, which can construct an electric sub-item metering system at low cost.

The technical scheme adopted by the present invention to solve its technical problems is:

On the one hand, a sub-item electric load identification system provided by an embodiment of the present invention includes a data acquisition module, a data analysis and management module, a data storage module, a multi-functional interaction module, and a power management module;

The data acquisition module is used to collect the original load voltage and total current data of the load power supply;

The data analysis and management module estimates the power consumption of the electrical equipment by processing the original load voltage and total current data, and extracts the required various current waveform characteristics for electrical equipment identification, and compares the electrical equipment identification results with the corresponding electrical equipment. The power estimation result of the device is associated;

The data storage module is used to store the current waveform characteristic template information of the electrical equipment and the electricity estimation result of each electrical equipment;

The multifunctional interaction module is used for receiving external input information, and displaying the electric power estimation result of the corresponding electrical equipment according to the input information;

The power management module provides the power required for the normal operation of the system.

As a possible implementation manner of this embodiment, the data acquisition module includes a voltage transformer and a current transformer of the same level as a common electric energy meter.

As a possible implementation manner of this embodiment, the accuracy range of the current transformer is determined according to the rated capacity of the scene to be tested.

As a possible implementation manner of this embodiment, the process of identifying electrical equipment by the data analysis and management module is as follows:

Extract the desired various current waveform characteristics from the total current data;

Compare the extracted current waveform feature with the current waveform feature template information of the electrical equipment;

Identify electrical equipment based on the comparison results.

As a possible implementation manner of this embodiment, the multifunctional interaction module adopts an LED display integrated circuit.

As a possible implementation manner of this embodiment, the power management module adopts an AC-DC power module.

As a possible implementation manner of this embodiment, the system is arranged at the main entrance of the load power supply, and is parallel to the smart meter on site.

On the other hand, a method for identifying a sub-item electric load provided by an embodiment of the present invention includes the following steps:

Collect the original load voltage and total current data of load power supply;

Process the original load voltage and total current data to estimate the electricity consumption of electrical equipment;

Extract the required various current waveform features from the total current data for electrical equipment identification, and associate the electrical equipment identification results with the power estimation results of the corresponding electrical equipment;

Store the power estimation results of each electrical device;

Displays the power estimation result of the corresponding electrical equipment according to the external input information.

As a possible implementation manner of this embodiment, the electrical equipment identification is specifically:

Extract the desired various current waveform characteristics from the total current data;

Compare the extracted current waveform feature with the current waveform feature template information of the electrical equipment;

Identify electrical equipment based on the comparison results.

The beneficial effects that the technical solutions of the embodiments of the present invention can have are as follows:

The present invention completes the electricity consumption estimation of the electrical equipment by processing the collected original load voltage and total current data, realizes the electrical equipment identification by extracting various current waveform characteristics required, and converts the electrical equipment identification results. It is associated with the electricity estimation result of the corresponding electrical equipment, thereby realizing the sub-item electricity load identification of all the electrical equipment.

The invention not only realizes the sub-item electric load identification of all electrical equipments, but also constructs a low-cost sub-item electric load identification system.

Description of drawings:

FIG. 1 is a schematic block diagram of a sub-item electric load identification system according to an exemplary embodiment;

FIG. 2 is a flowchart of a method for identifying electric load by item according to an exemplary embodiment;

In Fig. 1: 101-data acquisition module, 102-data analysis and management module, 103-data storage module, 104-multifunctional interaction module, 105-power management module.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

In order to clearly illustrate the technical features of the solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted from the present invention to avoid unnecessarily limiting the present invention.

Fig. 1 is a schematic block diagram of a sub-item electric load identification system according to an exemplary embodiment. As shown in FIG. 1 , a sub-item electric load identification system provided by an embodiment of the present invention includes a data acquisition module 101, a data analysis and management module 102, a data storage module 103, a multifunctional interaction module 104, and a power management module 105; The data acquisition module 101, the data storage module 103 and the multi-function interaction module 104 are respectively connected with the data analysis and management module 102 through the data bus;

The data collection module 101 is used to collect the original load voltage and total current data of the load power supply, and send it to the data analysis and management module 102;

The data analysis and management module 102 estimates the power consumption of the electrical equipment by processing the original load voltage and total current data, and extracts the required various current waveform characteristics for electrical equipment identification, and compares the electrical equipment identification results with the corresponding electrical equipment. The power estimation results of electrical equipment are correlated;

The data storage module 103 is used to store the current waveform characteristic template information of the electrical equipment and the power estimation result of each electrical equipment;

The multifunctional interaction module 104 is configured to receive external input information, and display the power estimation result of the corresponding electrical device according to the input information;

The power management module 105 provides the required power for the normal operation of the system.

As a possible implementation manner of this embodiment, the data acquisition module 101 includes a voltage transformer and a current transformer of the same level as a common electric energy meter, and collects the original load voltage and total current data of the load power supply respectively.

As a possible implementation manner of this embodiment, the accuracy range of the current transformer is determined according to the rated capacity of the scene to be tested.

As a possible implementation manner of this embodiment, the data analysis and management module 102 adopts a microprocessor with a model of TMS320F2812, which is the core module of the system, and realizes the identification of the electrical equipment type and the power level according to the various current waveform characteristics of the electrical equipment. estimate.

As a possible implementation manner of this embodiment, the process of identifying electrical equipment by the data analysis and management module 102 is as follows:

Extract the desired various current waveform characteristics from the total current data;

Compare the extracted current waveform feature with the current waveform feature template information of the electrical equipment;

Identify electrical equipment based on the comparison results.

As a possible implementation of this embodiment, the data storage module 103 adopts a flash memory chip with a model of AT24C02, which is used to store the current waveform characteristic template information of each electrical device, and is responsible for storing the itemized electricity estimation obtained by the system result.

As a possible implementation manner of this embodiment, the multifunctional interaction module 104 adopts an LED display integrated circuit, which is used for receiving external input information and outputting and displaying the sub-item electric quantity estimation result.

As a possible implementation manner of this embodiment, the power management module 105 adopts an AC-DC power module. The AC-DC power module adopts the power module model SAW5-S15, which is used to provide the required power for the normal operation of the system.

As a possible implementation manner of this embodiment, the system is arranged at the main entrance of the load power supply, and is parallel to the smart meter on site.

Fig. 2 is a flow chart of a method for identifying a sub-item electric load according to an exemplary embodiment. As shown in FIG. 2 , a method for identifying a sub-item electric load provided by an embodiment of the present invention includes the following steps:

Collect the original load voltage and total current data of load power supply;

Process the original load voltage and total current data to estimate the electricity consumption of electrical equipment;

Extract the required various current waveform features from the total current data for electrical equipment identification, and associate the electrical equipment identification results with the power estimation results of the corresponding electrical equipment;

Store the power estimation results of each electrical device;

Displays the power estimation result of the corresponding electrical equipment according to the external input information.

As a possible implementation manner of this embodiment, the electrical equipment identification is specifically:

Extract the desired various current waveform characteristics from the total current data;

Compare the extracted current waveform feature with the current waveform feature template information of the electrical equipment;

Identify electrical equipment based on the comparison results.

In the actual application process, the system is installed at the main entrance of the load power supply, in parallel with the smart meter, the system processes the original load voltage and total current data collected by the data acquisition module 101 through the data analysis and management module 102, The power consumption estimation result of the equipment is stored in the data storage module 103, and the data analysis and management module 102 extracts various current waveform characteristics to realize the identification of the electrical equipment, and finally associates the identification result with the power consumption estimation result of the corresponding electrical equipment, and passes The multifunctional interaction module 104 is displayed.

The above are only the preferred embodiments of the present invention. For those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made, and these improvements and modifications are also regarded as the present invention. The scope of protection of the invention.

Claims (9)

1. A subentry electric quantity load identification system is characterized by comprising a data acquisition module, a data analysis and management module, a data storage module, a multifunctional interaction module and a power management module;

the data acquisition module is used for acquiring original load voltage and total current data of load power supply;

the data analysis and management module estimates the power consumption of the electrical equipment by processing the original load voltage and total current data, extracts various required current waveform characteristics to identify the electrical equipment, and associates the identification result of the electrical equipment with the electric quantity estimation result of the corresponding electrical equipment;

the data storage module is used for storing current waveform characteristic template information of the electrical equipment and electric quantity estimation results of the electrical equipment;

the multifunctional interaction module is used for receiving external input information and displaying an electric quantity estimation result of corresponding electrical equipment according to the input information;

and the power supply management module provides required power for the normal operation of the system.

2. The item electric quantity load identification system according to claim 1, wherein the data acquisition module comprises a voltage transformer and a current transformer of the same grade as a common electric energy meter.

3. The item electric quantity load identification system according to claim 2, wherein the accuracy range of the current transformer is determined according to the rated capacity of a scene to be measured.

4. The item electric quantity load identification system according to claim 1, wherein the data analysis and management module performs an electric appliance identification process by:

extracting a plurality of required current waveform characteristics from the total current data;

comparing the extracted current waveform characteristics with current waveform characteristic template information of the electrical equipment;

and identifying the electrical equipment according to the comparison result.

5. The item power load identification system of claim 1, wherein said multifunctional interactive module is an LED display integrated circuit.

6. The item power load identification system of claim 1, wherein the power management module is an AC-DC power module.

7. The load recognition system of any one of claims 1 to 6, wherein the system is installed at the load power supply main entrance, in parallel with the smart meter on site.

8. A subentry electric quantity load identification method is characterized by comprising the following steps:

collecting original load voltage and total current data of load power supply;

processing the original load voltage and total current data, and estimating the power consumption of the electrical equipment;

extracting various current waveform characteristics required from the total current data to identify the electrical equipment, and associating the identification result of the electrical equipment with the electric quantity estimation result of the corresponding electrical equipment;

storing the electric quantity estimation results of each electric appliance;

and displaying the electric quantity estimation result of the corresponding electrical equipment according to the external input information.

9. The item electric quantity load identification method according to claim 8, wherein the electrical equipment identification is carried out by:

extracting a plurality of required current waveform characteristics from the total current data;

comparing the extracted current waveform characteristics with current waveform characteristic template information of the electrical equipment;

and identifying the electrical equipment according to the comparison result.

Images