Industrial user load monitoring device and method

Abstract

The invention relates to the technical field of electric power systems, and discloses an industrial user load monitoring device and method, the monitoring device is installed at an electric power inlet, a plurality of electric devices are hung at the electric power inlet, the monitoring device comprises a processor module and a plurality of electric power parameter acquisition modules, the monitoring device only needs to be installed at the electric power inlet, and the processor module is connected with the electric power parameter acquisition modules. In other words, the electric power parameter acquisition module is installed on the three-phase wire inlet side of the electric equipment, information such as three-phase voltage, current, frequency and power during operation of industrial equipment can be acquired in real time without invading the tested equipment, and the processor module can analyze and obtain the type and the operation condition of a single load in the load cluster by monitoring signals such as voltage and current at the position.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to an industrial user load monitoring device and method. Background Art

[0002] Traditional industrial user load monitoring methods, which involve installing power sensors and other equipment at the entrance of each monitored load, are gradually exposing numerous drawbacks in the current industrial environment. On the one hand, with the rapid development of modern industrial technology, industrial equipment is evolving towards a highly integrated approach. A complex piece of machinery is often composed of numerous power-consuming units with diverse functions, which work closely together to complete the equipment's various production tasks. In this case, using traditional monitoring methods requires installing monitoring equipment at the entrance of each power-consuming unit, which undoubtedly significantly increases the complexity and workload of the installation work, resulting in significantly longer installation times and potentially disrupting the normal operation of the equipment. Summary of the Invention

[0003] In view of this, the present invention provides an industrial user load monitoring device and method to solve the problem of how to monitor user load.

[0004] In the first aspect, the present invention provides an industrial user load monitoring device, which is installed at the power entrance, and multiple electrical equipment is hung at the power entrance. The monitoring device includes: a processor module, and multiple power parameter acquisition modules, wherein the power parameter acquisition module is respectively connected to an electrical equipment and a processor module, which is used to collect the analog operation data of the current electrical equipment and convert it into digital operation data and output it to the processor module; the processor module is used to calculate the operation parameters of the current electrical equipment based on the digital operation data.

[0005] In the present invention, the monitoring device only needs to be installed at the power entrance, that is, the power parameter acquisition module is installed on the three-phase incoming line side of the power-consuming equipment. Without intruding into the equipment under test, the three-phase voltage, current, frequency, power and other information of the industrial equipment during operation can be collected in real time. The processor module can analyze the type and operating status of a single load in the load cluster by monitoring the voltage, current and other signals at this location, and can reduce the complexity and workload of the installation work of the monitoring device.

[0006] In an optional embodiment, the power parameter acquisition module includes: a voltage transformer module, a current transformer module and an analog-to-digital converter module, wherein the voltage transformer module is used to collect the analog voltage of the current power-consuming equipment, and output it to the analog-to-digital converter module after proportional reduction processing; the current transformer module is used to collect the analog current of the current power-consuming equipment, and output it to the analog-to-digital converter module after proportional reduction processing; the analog-to-digital converter module is used to convert the analog voltage and current signals of the current power-consuming equipment into digital voltage and current signals and output them to the processor module.

[0007] In an optional embodiment, the processor module is further configured to determine whether the current electric device is an online device or a newly added device based on a comparison of the operating parameters of the electric device with the operating parameters of online electric devices.

[0008] In an optional embodiment, the monitoring device also includes: an equipment circuit breaker and a relay control module, wherein the equipment circuit breaker is connected between the power parameter acquisition module and the power inlet; the relay control module is respectively connected to the processor module and the equipment circuit breaker, and is used to complete the switching of the main power circuit breaker through the control of the processor module in the event of a serious equipment failure.

[0009] The integrated relay module of the present invention, in conjunction with the power parameter acquisition module and processor module, can provide protection for monitored equipment against frequency anomalies, voltage anomalies, overcurrent, three-phase power imbalance, and no-load electric shock, significantly improving the safety of industrial equipment.

[0010] In an optional embodiment, the monitoring device further includes: a memory module connected to the processor module, which is used to store digital operating data, operating parameters, and rated parameters of the electrical equipment.

[0011] In an optional embodiment, the monitoring device further includes: a data communication module, which is connected to the processor module and the host computer respectively, and is used for communication between the processor module and the host computer.

[0012] The present invention is equipped with an Ethernet communication module, and can communicate with a host computer through the Ethernet module. The power information of all electrical equipment can be read through a computer, which is convenient for cooperating with the host computer software to achieve further energy-saving optimization and upper-level monitoring.

[0013] In the second aspect, the present invention provides an industrial user load monitoring method, which is applied to the processor module of the industrial user load monitoring device. The method includes: obtaining the digital operating data of the current electrical equipment collected in real time by the power parameter acquisition module; and calculating the operating parameters of the current electrical equipment based on the digital operating data of the current electrical equipment.

[0014] In an optional embodiment, the industrial user load monitoring method also includes: judging in real time whether the operating parameters of the current electrical equipment are abnormal based on the operating parameters of the current electrical equipment; if the operating parameters of the current electrical equipment are abnormal, starting the alarm mode; issuing an instruction to alarm the upper computer through the data communication module, or controlling the relay control module to disconnect the power supply of the current abnormal electrical equipment and alarm.

[0015] In an optional embodiment, the industrial user load monitoring method also includes: based on the operating parameters of the current electrical equipment, according to the changes in voltage and current signals over a period of time, judging whether the current electrical equipment is in a startup state or a stable state; if it is in a startup state, applying wavelet analysis calculation to the operating parameters; if it is in a stable state, applying power analysis calculation to the operating parameters; and judging whether the current electrical equipment is a newly added device or a newly added electrical part of the online device based on the calculation results.

[0016] In a third aspect, the present invention provides a computer device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the industrial user load monitoring method of the second aspect or any corresponding embodiment thereof by executing the computer instructions.

[0017] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the industrial user load monitoring method of the second aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a diagram showing the composition of an industrial user load monitoring device according to an embodiment of the present invention;

[0020] Figure 2 is a flow chart of an industrial user load monitoring method according to an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 1-Relay control module; 2-Processor module; 3-Power parameter acquisition module; 4-Memory module; 5-Data communication module; 6-Clock module; 7-Power module; 8-Host computer; 9-Voltage transformer module; 10-Current transformer module; 11-Analog-to-digital converter module; 12-Equipment circuit breaker. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components; wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] This embodiment provides an industrial user load monitoring device, which is installed at the power inlet, where multiple electrical devices are connected. By monitoring the voltage, current and other signals at the inlet, the type and operating status of a single load in the load cluster can be analyzed. Figure 1 As shown, the monitoring device includes: a processor module 2, multiple power parameter acquisition modules 3, Figure 1 Only one power parameter acquisition module 3 is shown in the figure, but in fact one power parameter acquisition module 3 is provided for each electrical device.

[0029] Specifically, the power parameter acquisition module 3 is connected to each power-consuming device and the processor module 2. It collects analog operating data from the current power-consuming device, converts it into digital operating data, and outputs it to the processor module 2. Each power parameter acquisition module 3 is capable of collecting the power parameters of the corresponding power-consuming device and converting the obtained analog parameters into digital parameters. Power parameters are not limited to multivariate parameters such as voltage, current, and frequency. In a practical application scenario, the power parameter acquisition module 3 can acquire data at a frequency of up to 10 kHz, enabling refined data acquisition and providing data resources for further data processing.

[0030] Specifically, the processor module 2 is configured to calculate the operating parameters of the current electrical device based on the digital operating data. The processor module 2 can perform digital processing on the operating parameters of the current electrical device, and can also correspond the received operating parameters of each electrical device to the electrical device. Based on the operating parameters, the electrical device status is classified to accurately characterize the operating status and power consumption parameters of each device. The status of the electrical device is not limited to the startup state, stable state, and stopped state.

[0031] Optionally, the built-in analysis algorithm software in the processor module 2 and the host computer program can accurately analyze the overall electricity usage behavior of industrial users. This analysis can determine the operating status of electrical equipment. If abnormal data is found, the processor module 2 can identify the specific power-consuming part of the equipment that is malfunctioning, alerting the user to promptly address the problem and avoid losses. Furthermore, the accumulation of raw data can help users develop energy-saving plans.

[0032] Optionally, the operating parameters include real-time voltage, real-time current, frequency, active power, reactive power, harmonic power, and current curve during equipment startup.

[0033] In some optional embodiments, such as Figure 1 As shown, the power parameter acquisition module 3 includes: a voltage transformer module 9, a current transformer module 10 and an analog-to-digital converter module 11.

[0034] The voltage transformer module 9 is used to collect the analog voltage of the current power device, scale it down, and output it to the analog-to-digital converter module. The current transformer module 10 is used to collect the analog current of the current power device, scale it down, and output it to the analog-to-digital converter module. The analog-to-digital converter module 11 is used to convert the analog voltage and current signals of the current power device into digital voltage and current signals and output them to the processor module 2.

[0035] In some optional implementations, the processor module 2 is further configured to determine whether the current electric device is an online device or a newly added device based on a comparison of the operating parameters of the electric device with the operating parameters of online electric devices.

[0036] Specifically, the processor module 2 stores the operating parameters of the current online equipment. At the next sampling moment, if a new device is added, its operating parameters must be different from those of the online equipment. The specific method is that the processor module 2 determines whether the current power-consuming equipment is in the startup state or the stable state based on the changes in the voltage and current signals over a period of time; if it is in the startup state, the operating parameters are calculated using wavelet analysis; if it is in the stable state, the operating parameters are calculated using power analysis; and based on the calculation results, it is determined whether the current power-consuming equipment is a newly added device or a newly added power-consuming part of the online equipment.

[0037] In some optional embodiments, such as Figure 1 As shown, the monitoring device further includes: an equipment circuit breaker 12 and a relay control module 1.

[0038] like Figure 1 As shown, the device circuit breaker 12 is connected between the power parameter acquisition module 3 and the power inlet. Specifically, the device circuit breaker 12 is actually a main power switch. When the device circuit breaker 12 is disconnected, all electrical devices are powered off.

[0039] like Figure 1 As shown, the relay control module 1 is connected to the processor module 2 and the device circuit breaker 12 respectively. It is used to complete the switching of the main power circuit breaker through the control of the processor module 2 in the event of a serious equipment failure.

[0040] In some optional embodiments, such as Figure 1 As shown, the monitoring device further includes: a memory module 4, which is connected to the processor module 2 and is used to store digital operating data, operating parameters, and rated parameters of the electrical equipment.

[0041] Specifically, the processor module 2 controls the power parameter acquisition module 3 to collect the analog operating data of the current electrical equipment in real time and convert it into digital operating data and store it in the memory module 4; the processor module 2 calculates the operating parameters based on the digital operating data of the current electrical equipment and stores them in the memory module 4; and the rated parameters of the current electrical equipment are manually input into the host computer 8 and stored in the memory module 4.

[0042] In some optional embodiments, such as Figure 1 As shown, the monitoring device further includes: a data communication module 5 , which is connected to the processor module 2 and the host computer respectively, and is used for communication between the processor module 2 and the host computer 8 .

[0043] Specifically, the processor module 2 determines in real time whether the operating parameters of the current electrical device are abnormal. If so, the processor module 2 issues a command to alert the host computer via the data communication module. If not, the processor module 2 activates the monitoring mode. The processor module 2 continuously processes the operating parameters and determines whether the current electrical device is a newly added device or a newly added electrical component of the network device. The processor module 2 updates and stores the operating parameters of the electrical device to which it belongs in the memory module 4 and sends the results to the host computer for display or further processing.

[0044] Optionally, the processor module 2 determines whether the operating parameters of the current electrical equipment are abnormal by determining whether there is overcurrent, low voltage, or abnormal frequency.

[0045] In some optional embodiments, such as Figure 1 As shown, the monitoring device further includes: a power supply module 7, which can be a DC-DC power supply such as a switching power supply.

[0046] According to an embodiment of the present invention, an embodiment of an industrial user load monitoring method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0047] In this embodiment, a method for monitoring the load of an industrial user is provided. The method is applied to the processor module 2 of the industrial user load monitoring device. Figure 2 As shown, the method includes:

[0048] Step S1: Acquire digital operating data of current electrical equipment collected in real time by the power parameter collection module 3;

[0049] Step S2: Calculate the operating parameters of the current electrical equipment based on the digital operating data of the current electrical equipment.

[0050] Specifically, the processor module 2 controls the power parameter acquisition module 3 to collect the current analog operating data of the electrical equipment in real time, convert it into digital operating data, and store it in the memory module 4. The processor module 2 calculates the operating parameters based on the current digital operating data of the electrical equipment and stores them in the memory module 4. The rated parameters of the current electrical equipment are manually input into the host computer 8 and stored in the memory module 4. The operating parameters include real-time voltage, real-time current, frequency, active power, reactive power, harmonic power, and the current curve during the equipment startup process.

[0051] In some optional embodiments, the industrial user load monitoring method also includes: judging in real time whether the operating parameters of the current electrical equipment are abnormal based on the operating parameters of the current electrical equipment; if the operating parameters of the current electrical equipment are abnormal, starting the alarm mode; issuing an instruction to alarm the upper computer through the data communication module, or controlling the relay control module 1 to disconnect the power supply of the current abnormal electrical equipment and alarm.

[0052] Specifically, the processor module 2 determines in real time whether the operating parameters of the current electrical device are abnormal. If abnormal, the alarm mode is activated. The processor module 2 issues a command to the host computer through the data communication module to alarm or control the relay control module 1 to disconnect the power supply of the current abnormal electrical device and alarm. If normal, the monitoring mode is activated. The processor module 2 continuously processes the operating parameters and determines whether the current electrical device is a newly added device or a newly added electrical component of the network device. The memory module 4 updates and stores the operating parameters of the electrical device to which it belongs, and the results are sent to the host computer for display or further processing. In this step, the processor module 2 determines whether the operating parameters of the current electrical device are abnormal by determining whether there is overcurrent, low voltage, or frequency abnormality.

[0053] In some optional embodiments, the industrial user load monitoring method also includes: based on the operating parameters of the current electrical equipment, according to the changes in voltage and current signals over a period of time, judging whether the current electrical equipment is in a startup state or a stable state; if it is in a startup state, applying wavelet analysis calculation to the operating parameters; if it is in a stable state, applying power analysis calculation to the operating parameters; and judging whether the current electrical equipment is a newly added device or a newly added electrical part of the online device based on the calculation results.

[0054] An embodiment of the present invention further provides a computer device having the above-mentioned processor module 2 .

[0055] See also Figure 3 , Figure 3 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 3As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 3 A processor 10 is taken as an example.

[0056] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0057] The memory 20 stores instructions that can be executed by at least one processor 10, so as to enable at least one processor 10 to execute the method shown in the above embodiment.

[0058] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created based on the use of a computer device for displaying a small program landing page, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0059] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0060] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0061] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0062] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An industrial user load monitoring device, characterized in that: The monitoring device is installed at the power inlet, where multiple electrical devices are connected. The monitoring device includes: a processor module, multiple power parameter acquisition modules, wherein: The power parameter acquisition module is connected to an electric device and a processor module respectively, and is used to collect the analog operation data of the current electric device and convert it into digital operation data and output it to the processor module; The processor module is used to calculate the operating parameters of the current electrical equipment based on the digital operating data.

2. The industrial user load monitoring device according to claim 1, characterized in that: The power parameter acquisition module includes: a voltage transformer module, a current transformer module and an analog-to-digital converter module, wherein: The voltage transformer module is used to collect the analog voltage of the current electrical equipment, scale it down, and output it to the analog-to-digital converter module; The current transformer module is used to collect the analog current of the current power device, and output it to the analog-to-digital converter module after scaling down. The analog-to-digital converter module is used to convert the analog voltage and current signals of the current electrical equipment into digital voltage and current signals and output them to the processor module.

3. The industrial user load monitoring device according to claim 1, characterized in that: The processor module is further used to determine whether the current electric device is an online device or a newly added device based on the comparison of the operating parameters of the electric device with the operating parameters of the online electric devices.

4. The industrial user load monitoring device according to claim 3, characterized in that: The monitoring device also includes: an equipment circuit breaker and a relay control module, wherein: Equipment circuit breaker, which is connected between the power parameter acquisition module and the power inlet; The relay control module is connected to the processor module and the equipment circuit breaker respectively. In the event of a serious equipment failure, the relay control module is used to control the main power circuit breaker to turn on and off.

5. The industrial user load monitoring device according to claim 4, characterized in that: The monitoring device further comprises: The memory module is connected to the processor module and is used to store digital operating data, operating parameters, and rated parameters of the electrical equipment.

6. The industrial user load monitoring device according to claim 5, characterized in that: The monitoring device further comprises: The data communication module is connected to the processor module and the host computer respectively, and is used for communication between the processor module and the host computer.

7. A method for monitoring industrial user load, characterized in that: The method is applied to the processor module of the industrial user load monitoring device according to claim 6, and the method comprises: Obtain digital operating data of current electrical equipment collected in real time by the power parameter acquisition module; Calculate the operating parameters of the current electrical equipment based on the digital operating data of the current electrical equipment.

8. The industrial user load monitoring method according to claim 7, characterized in that: Also includes: According to the operating parameters of the current electrical equipment, determine in real time whether the operating parameters of the current electrical equipment are abnormal; If the operating parameters of the current electrical equipment are abnormal, the alarm mode will be activated; Send out instructions to the upper computer through the data communication module to alarm, or control the relay control module to disconnect the power supply of the current abnormal electrical equipment and alarm.

9. The industrial user load monitoring method according to claim 7, characterized in that: Also includes: Based on the operating parameters of the current electrical equipment and the changes in voltage and current signals over a period of time, determine whether the current electrical equipment is in the startup state or the stable state; If it is in the startup state, the operating parameters are calculated using wavelet analysis; if it is in the stable state, the operating parameters are calculated using power analysis; And based on the calculation results, it is determined whether the current power-consuming equipment is a newly added equipment or a newly added power-consuming part of the online equipment.

10. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the industrial user load monitoring method according to any one of claims 7 to 9 by executing the computer instructions.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the industrial user load monitoring method according to any one of claims 7 to 9.

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