Variable-frequency electric control cabinet control metering assembly and variable-frequency electric control cabinet

Abstract

The embodiment of the invention discloses a variable-frequency electric control cabinet control metering assembly and a variable-frequency electric control cabinet. The assembly comprises an electric meter acquisition communication module, a frequency converter control communication module, a data analysis processor and an upper computer communication interface. The electric meter acquisition communication module is connected with an intelligent electric meter and is used for acquiring electric energy data acquired by the intelligent electric meter; the frequency converter control communication module is connected with a frequency converter in the frequency conversion electric control cabinet and is used for acquiring operation data of the frequency converter and sending a control instruction to the frequency converter; the data analysis processor is respectively connected with the ammeter acquisition communication module and the frequency converter control communication module, is connected with an upper computer through the upper computer communication interface, and is used for uploading the electric energy data and the operation data to the upper computer; and receiving the control instruction issued by the upper computer. On the basis, the upper computer can conveniently integrate the two kinds of data to carry out subsequent more comprehensive analysis.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of variable frequency electric control cabinets, and in particular to a variable frequency electric control cabinet control metering component and a variable frequency electric control cabinet. Background Art

[0002] Currently, in electrical systems, variable-frequency electric control cabinets are commonly used to control variable-frequency power equipment such as pumps and fans. Because these variable-frequency power equipment consumes significant power, individual power measurements are typically performed for energy analysis.

[0003] In traditional electrical control cabinets, power collection and equipment control are divided into two systems and run separately. For example, the power collection-related devices are connected to the energy management system, and the equipment control-related devices are connected to the intelligent control system. The two systems run independently, resulting in the disadvantage of data silos, making it impossible to achieve comprehensive data analysis, which has a negative impact on equipment energy-saving analysis to a certain extent. Summary of the Invention

[0004] The embodiments of the present application provide a variable frequency electric control cabinet control metering component and a variable frequency electric control cabinet to avoid the disadvantages of data islands and improve the comprehensiveness of equipment energy-saving analysis.

[0005] In a first aspect, an embodiment of the present application provides a variable frequency electric control cabinet control metering component, comprising: an electric meter acquisition communication module, a frequency converter control communication module, a data analysis processor, and a host computer communication interface;

[0006] The electric energy data acquisition communication module is connected to the smart electric energy meter and is used to obtain the electric energy data collected by the smart electric energy meter;

[0007] The inverter control communication module is connected to the inverter in the inverter electric control cabinet, and is used to obtain the operating data of the inverter and send control instructions to the inverter;

[0008] The data analysis processor is connected to the electric meter acquisition communication module and the inverter control communication module respectively. The data analysis processor is connected to the host computer through the host computer communication interface, and is used to upload the electric energy data and the operating data to the host computer, and receive the control instructions issued by the host computer.

[0009] In a second aspect, an embodiment of the present application provides a variable frequency electric control cabinet, which includes a frequency converter, a smart meter, and a variable frequency electric control cabinet control and metering component as provided in any embodiment of the present application.

[0010] The technical solution of the embodiment of the present application includes: an electric meter collection communication module, a frequency converter control communication module, a data analysis processor, and a host computer communication interface; the electric meter collection communication module is connected to the smart meter and is used to obtain the electric energy data collected by the smart meter; the frequency converter control communication module is connected to the frequency converter in the frequency converter electric control cabinet and is used to obtain the operating data of the frequency converter and send control instructions to the frequency converter; the data analysis processor is connected to the electric meter collection communication module and the frequency converter control communication module respectively, and the data analysis processor is connected to the host computer through the host computer communication interface and is used to upload the electric energy data and the operating data to the host computer and receive the control instructions issued by the host computer. Using this component, the electric energy data in the traditional energy management system and the operating data in the intelligent control system can be uniformly obtained, breaking the data silos in the independent systems, facilitating the host computer to integrate the two types of data for subsequent analysis, and improving the comprehensiveness of the subsequent analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of the variable frequency electric control cabinet control metering component provided in Example 1 of the present application;

[0012] Figure 2 This is a structural diagram of a variable frequency electric control cabinet provided in Example 2 of the present application. DETAILED DESCRIPTION

[0013] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present application and are not intended to limit the present application. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions of the present application, not all of the structures.

[0014] Example 1

[0015] Figure 1 This is a structural diagram of the variable frequency electric control cabinet control metering component provided in Example 1 of this application, as shown in FIG. Figure 1 As shown, the variable frequency electric control cabinet control metering component provided in this embodiment may specifically include: an electric meter acquisition communication module, a frequency converter control communication module, a data analysis processor, and a host computer communication interface;

[0016] The electric energy data acquisition communication module is connected to the smart electric energy meter and is used to obtain the electric energy data collected by the smart electric energy meter;

[0017] The inverter control communication module is connected to the inverter in the inverter electric control cabinet, and is used to obtain the operating data of the inverter and send control instructions to the inverter;

[0018] The data analysis processor is connected to the electric meter acquisition communication module and the inverter control communication module respectively. The data analysis processor is connected to the host computer through the host computer communication interface, and is used to upload the electric energy data and the operating data to the host computer, and receive the control instructions issued by the host computer.

[0019] Specifically, the meter data collection communication module is connected to the smart meter, and the power line that supplies power to the variable frequency electric control cabinet is connected to various power-consuming devices in the cabinet through the smart meter. The smart meter can be connected to the meter data collection communication module through a twisted pair cable or optical fiber, so that the meter data collection communication module can receive the electric energy data collected by the meter.

[0020] It should be noted that the use of twisted pair or optical fiber communication can effectively isolate strong and weak electricity. In addition, as electricity meters become more and more intelligent, the electricity meters may be directly coupled with twisted pair interfaces or optical coupler communication interfaces. Therefore, corresponding twisted pair interfaces or optical coupler communication interfaces can be set in the variable frequency electric control cabinet to control the metering components to achieve the aforementioned connection.

[0021] Therefore, in this embodiment, the variable frequency electric control cabinet control metering component includes an electric meter communication interface; the electric meter acquisition communication module is connected to the smart electric meter via the electric meter communication interface. The electric meter communication interface is a twisted pair interface or an optical coupler communication interface.

[0022] In addition, the inverter control communication module is connected to the inverter in the variable frequency electric control cabinet. Since the inverter is usually provided with a twisted pair interface and usually adopts the modbus 485 communication protocol, a corresponding twisted pair interface can be set in the control metering component of the variable frequency electric control cabinet.

[0023] In order to improve the isolation performance of strong and weak electricity, an optocoupler communication unit can also be set up. One end of the optocoupler communication unit uses a twisted pair cable to connect to the frequency converter, converts the data into an optical signal, and sends it to the frequency converter control communication module through optical fiber. Therefore, a corresponding optocoupler communication interface can be set up in the frequency converter electrical control cabinet control metering component.

[0024] Therefore, in this embodiment, the frequency conversion electric control cabinet control metering component includes a frequency converter communication interface; the frequency converter control communication module is connected to the frequency converter in the frequency conversion electric control cabinet via the frequency converter communication interface. The frequency converter communication interface is a twisted pair interface or an optical coupler communication interface.

[0025] It should be noted that the aforementioned power data may include, but is not limited to, instantaneous parameters such as voltage, current, active / reactive power, time-sharing power, total power, peak power, etc. The aforementioned operating parameters include, but are not limited to, instantaneous parameters such as the inverter's operating frequency, operating temperature, inverter torque vector, and excitation vector.

[0026] The above parameters can be transmitted in time-division order according to the collection time. On the one hand, the data can be formed into a time chain data format, which is more friendly to its trend analysis. On the other hand, the frequency of transmission can be reduced, reducing the pressure on the transmission bandwidth.

[0027] In this embodiment, the data analysis processor and the host computer are both equipped with load characteristic analysis AI algorithms and control logic.

[0028] Among them, when the load characteristic analysis AI algorithm or control logic in the host computer is updated, the host computer sends the updated load characteristic analysis AI algorithm or control logic to the data analysis processor through the host computer communication interface.

[0029] The data analysis processor is used to perform load characteristic analysis based on the power data and the operation data, and optimize the control logic of the inverter based on the analysis results.

[0030] It should be noted that the load characteristics analysis AI algorithm mainly analyzes the collected power data and the inverter operation data together to achieve the purpose of comparing and analyzing the load characteristics with the power consumption data, exploring energy consumption details, and predicting equipment failures.

[0031] The specific algorithm structure of the load characteristic analysis AI algorithm can be referred to in related technologies and will not be repeated here.

[0032] In addition, the control logic is the frequency change logic for controlling the frequency converter at different times or under different working conditions. The results of the algorithm output can help optimize the control logic. In a specific example, the output result can be the adjustment value of the frequency under a certain working condition or in a certain time period.

[0033] Since the performance of the host computer is usually higher than that of the chip installed in the local electrical control cabinet, the upgrade and update of the load characteristic analysis AI algorithm usually occurs in the host computer. Whenever an updated version of the algorithm appears in the host computer, the updated version can be sent to the data analysis processor for use.

[0034] Of course, sometimes the staff will manually update the control logic in the local electrical control cabinet. Therefore, when the control logic in the data analysis processor is updated, the data analysis processor will feed back the updated control logic to the host computer through the host computer communication interface.

[0035] In this embodiment, the data analysis processor is equipped with a protocol conversion module and a data packaging module; the protocol conversion module is used to perform protocol conversion on the power data and the operation data, and the data packaging module is used to package the data after protocol conversion so as to upload the packaged data to the host computer through the host computer communication interface.

[0036] Since the data encapsulation protocols of the smart meter and the inverter are different, the protocol conversion module carried by the data analysis processor in this embodiment encapsulates different protocol conversion algorithms to correspond to data received by different interfaces.

[0037] In a specific example, the variable frequency electric control cabinet control metering component is provided with an electric meter communication interface and an inverter communication interface. In the program, the identifier of the electric meter communication interface can be linked to a protocol conversion algorithm, and the interface identifier of the inverter communication interface can be linked to another protocol conversion algorithm, so as to realize that the data received by the electric meter communication interface is converted using the linked protocol conversion algorithm, and the data received from the inverter communication interface is converted using the linked protocol conversion algorithm.

[0038] In addition, the variable frequency electric control cabinet is usually also provided with some physical switches and monitoring devices (such as switch status indicator lights, embedded screens, etc.). The control and metering components of the variable frequency electric control cabinet include electrical cabinet switches and status monitoring modules.

[0039] The electrical cabinet switch and status monitoring module is connected to the switch control point of the variable frequency electric control cabinet and is used to control and monitor the status of the switch control point.

[0040] In this embodiment, the electric meter data collection and communication module, the inverter control and communication module, the data analysis processor, and the host computer communication interface are provided. The electric meter data collection and communication module is connected to the smart meter to obtain the electric energy data collected by the smart meter. The inverter control and communication module is connected to the inverter in the inverter electric control cabinet to obtain the inverter's operating data and send control instructions to the inverter. The data analysis processor is connected to the electric meter data collection and communication module and the inverter control and communication module, respectively. The data analysis processor is connected to the host computer via the host computer communication interface to upload the electric energy data and operating data to the host computer and receive the control instructions issued by the host computer. Using this component, electric energy data from traditional energy management systems and operating data from intelligent control systems can be uniformly acquired, breaking down data silos in independent systems and facilitating subsequent analysis by the host computer by integrating the two types of data, thereby improving the comprehensiveness of the subsequent analysis.

[0041] Example 2

[0042] Figure 2A schematic diagram of the structure of a variable frequency electric control cabinet is provided in the second embodiment of the present application, as shown in FIG. Figure 2 As shown, the variable frequency electric control cabinet provided in this embodiment includes a frequency converter, a smart meter, and a variable frequency electric control cabinet control and metering component as provided in the first embodiment of the present application.

[0043] Among them, the frequency converter is used to drive power equipment such as water pumps and fans, and the smart meter is used to measure the electricity consumed in this cabinet.

[0044] Note that the above are only preferred embodiments of the present application and the technical principles employed. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present application. The scope of the present application is determined by the scope of the appended claims.

Claims

1. A variable frequency electric control cabinet control metering component, characterized in that: include: Electricity meter data collection communication module, inverter control communication module, data analysis processor, and host computer communication interface; The electric energy data acquisition communication module is connected to the smart electric energy meter and is used to obtain the electric energy data collected by the smart electric energy meter; The inverter control communication module is connected to the inverter in the inverter electric control cabinet, and is used to obtain the operating data of the inverter and send control instructions to the inverter; The data analysis processor is connected to the electric meter acquisition communication module and the inverter control communication module respectively. The data analysis processor is connected to the host computer through the host computer communication interface, and is used to upload the electric energy data and the operating data to the host computer, and receive the control instructions issued by the host computer.

2. The variable frequency electric control cabinet control metering component according to claim 1 is characterized in that: The data analysis processor and the host computer are both equipped with load characteristic analysis AI algorithm and control logic; When the load characteristic analysis AI algorithm or control logic in the host computer is updated, the host computer sends the updated load characteristic analysis AI algorithm or control logic to the data analysis processor through the host computer communication interface; The data analysis processor is used to perform load characteristic analysis based on the power data and the operation data, and optimize the control logic of the inverter based on the analysis results.

3. The variable frequency electric control cabinet control metering component according to claim 2, characterized in that: When the control logic in the data analysis processor is updated, the data analysis processor feeds back the updated control logic to the host computer through the host computer communication interface.

4. The variable frequency electric control cabinet control metering component according to claim 1, characterized in that: The data analysis processor is equipped with a protocol conversion module and a data packaging module; The protocol conversion module is used to perform protocol conversion on the electric energy data and the operating data, and the data packaging module is used to package the data after protocol conversion so as to upload the packaged data to the host computer through the host computer communication interface.

5. The variable frequency electric control cabinet control metering component according to claim 1, characterized in that: The variable frequency electric control cabinet control metering component includes an electric meter communication interface; The meter data collection and communication module is connected to the smart meter via the meter communication interface.

6. The variable frequency electric control cabinet control metering component according to claim 1, characterized in that: The variable frequency electric control cabinet control metering component includes a frequency converter communication interface; The inverter control communication module is connected to the inverter in the variable frequency electric control cabinet through the inverter communication interface.

7. The variable frequency electric control cabinet control metering component according to claim 5, characterized in that: The electric meter communication interface is a twisted pair interface or an optical coupler communication interface.

8. The variable frequency electric control cabinet control metering component according to claim 6, characterized in that: The inverter communication interface is a twisted pair interface or an optical coupler communication interface.

9. The variable frequency electric control cabinet control metering component according to claim 1, characterized in that: The variable frequency electric control cabinet control metering component includes an electric cabinet switch and a status monitoring module; The electrical cabinet switch and status monitoring module is connected to the switch control point of the variable frequency electric control cabinet and is used to control and monitor the status of the switch control point.

10. A variable frequency electric control cabinet, characterized in that: The variable frequency electric control cabinet includes a frequency converter, a smart meter, and a variable frequency electric control cabinet control and metering component according to any one of claims 1 to 9.

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