A method and system for monitoring the operation status of a low voltage power distribution system

Abstract

The embodiment of the present application discloses a method and system for monitoring the operating status of a low-voltage power distribution system, the method comprising: collecting monitoring data, the monitoring data comprising the main circuit voltage signal, the current signal of each circuit and the environmental signal; further, analyzing and processing the monitoring data, respectively obtaining the operating parameters of the electrical equipment in each circuit, and generating an operating analysis report; judging whether there are abnormal parameters in the operating parameters of each circuit, and if there are abnormal parameters, triggering an alarm. It effectively monitors the operating status of the power distribution system and the environment around the power distribution cabinet, the system is highly integrated, and can simultaneously measure the current, voltage, power, frequency and power factor of multiple circuits, reducing the monitoring cost.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of power distribution technology, and specifically to a method and system for monitoring the operating status of a low-voltage power distribution system. Background Art

[0002] With the development of technology, electricity has been integrated into all aspects of human activities, and the requirements for safe, reliable and energy-saving electricity use are becoming increasingly higher.

[0003] There is a lack of monitoring system in the current small distribution rooms. The traditional large-scale monitoring system has the problem of single function, such as the monitoring meter intelligently measures a single circuit, occupies a large cabinet area and is costly to install. Summary of the invention

[0004] To this end, the embodiments of the present application provide a method and system for monitoring the operating status of a low-voltage power distribution system, which can effectively monitor the operating status of the power distribution system and the surrounding environment of the distribution cabinet. The system has high system integration and can simultaneously measure the current, voltage, power, frequency and power factor of multiple circuits, thereby reducing the monitoring cost.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] According to a first aspect of an embodiment of the present application, a method for monitoring the operating status of a low-voltage power distribution system is provided, wherein the method comprises:

[0007] Collect monitoring data, including main circuit voltage signals, current signals of various circuits, and environmental signals;

[0008] Analyze and process the monitoring data, obtain the operating parameters of the electrical equipment in each circuit, and generate an operation analysis report;

[0009] It is determined whether there are any abnormal parameters in the operating parameters of each circuit, and if there are any abnormal parameters, an alarm is triggered.

[0010] Optionally, before collecting monitoring data, the method further includes:

[0011] The current transformer is used to convert the original current signal in each loop into a monitorable current signal; wherein the number of the current transformers is adapted to the number of loops.

[0012] Optionally, after analyzing and processing the monitoring data to obtain the operating parameters in each circuit respectively, the method further includes:

[0013] The monitored data and operation analysis report are uploaded to a host computer, which records the operation analysis report and feeds back a comprehensive optimization plan in combination with historical records.

[0014] Optionally, the determining whether there are abnormal parameters in the operating parameters of each loop includes:

[0015] Pre-set alarm thresholds for operating parameters of each circuit;

[0016] Determine whether the operating parameters of each circuit have reached the alarm threshold;

[0017] The operating parameter reaching the alarm threshold is defined as the abnormal parameter.

[0018] Optionally, after determining whether the operating parameters in each circuit have abnormal parameters and triggering an alarm if the abnormal parameters exist, the method further includes:

[0019] Cut off the circuit breaker that supplies power to the abnormal circuit; wherein the abnormal circuit is the circuit corresponding to the abnormal parameter.

[0020] According to a second aspect of an embodiment of the present application, a low-voltage power distribution system operation status monitoring system is provided, characterized in that the system comprises:

[0021] A data acquisition module is used to collect monitoring data, wherein the monitoring data includes a main circuit voltage signal, current signals of each circuit, and an environmental signal;

[0022] An operation parameter acquisition module is used to analyze and process the monitoring data, respectively acquire the operation parameters of the electrical equipment in each circuit, and generate an operation analysis report;

[0023] The alarm triggering module is used to determine whether there are abnormal parameters in the operating parameters of each circuit, and if so, trigger an alarm.

[0024] Optionally, the system further comprises:

[0025] The current transformer module is used to convert the original current signal in each loop into a monitorable current signal; wherein the number of current transformers in the current transformer module is adapted to the number of loops.

[0026] Optionally, the system further comprises:

[0027] The optimization module is used to upload the monitored data and operation analysis report to the host computer, and the host computer records the operation analysis report and feeds back a comprehensive optimization plan in combination with historical records.

[0028] According to a third aspect of an embodiment of the present application, a device is provided, comprising: a data acquisition device, a processor and a memory; the data acquisition device is used to acquire data; the memory is used to store one or more program instructions; the processor is used to execute one or more program instructions to execute any method described in the first aspect.

[0029] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, wherein the computer storage medium contains one or more program instructions, and the one or more program instructions are used to execute the method as described in any one of the first aspects.

[0030] In summary, the embodiments of the present application provide a method and system for monitoring the operating status of a low-voltage power distribution system, by collecting monitoring data, the monitoring data includes the main circuit voltage signal, the current signal of each circuit, and the environmental signal; further, the monitoring data is analyzed and processed, the operating parameters in each circuit are obtained respectively, and an operation analysis report is generated; it is determined whether there are abnormal parameters in the operating parameters of the electrical equipment in each circuit, and if there are such abnormal parameters, an alarm is triggered. It effectively monitors the operating status of the power distribution system and the environment around the distribution cabinet. The system is highly integrated and can simultaneously measure the current, voltage, power, frequency, power factor, etc. of multiple circuits, reducing the monitoring cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0032] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0033] Figure 1 A schematic diagram of a method for monitoring the operating status of a low-voltage power distribution system provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the system principle provided for the embodiment of the present application;

[0035] Figure 3A front view of a mutual inductor module provided in an embodiment of the present application;

[0036] Figure 4 A top view of a transformer bracket provided in an embodiment of the present application;

[0037] Figure 5 A block diagram of a low-voltage power distribution system operating status monitoring system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present application embodiment provides a method for monitoring the operating status of a low-voltage power distribution system. Figure 1 As shown, the method includes:

[0040] Step 101: Collect monitoring data, where the monitoring data includes a main circuit voltage signal, current signals of each circuit, and an environmental signal.

[0041] Step 102: Analyze and process the monitoring data, obtain the operating parameters of the electrical equipment in each circuit, and generate an operation analysis report.

[0042] Step 103: Determine whether there are any abnormal parameters in the operating parameters of each circuit, and if there are any abnormal parameters, trigger an alarm.

[0043] In a possible implementation, before collecting the monitoring data, the method further includes: using the current transformer to convert the original current signal in each loop into a monitorable current signal; wherein the number of the current transformers is adapted to the number of loops.

[0044] In a possible implementation, after analyzing and processing the monitoring data to obtain the operating parameters in each circuit, the method further includes: uploading the monitored data and the operation analysis report to a host computer, and the host computer records the operation analysis report and feeds back a comprehensive optimization plan in combination with historical records.

[0045] In a possible implementation, in step 103, determining whether there are abnormal parameters in the operating parameters of each circuit includes: presetting alarm thresholds for the operating parameters of each circuit; determining whether the operating parameters of each circuit have reached the alarm threshold; and defining the operating parameters that have reached the alarm threshold as the abnormal parameters.

[0046] In a possible implementation, after step 103, the method further includes: cutting off a circuit breaker that supplies power to an abnormal circuit; wherein the abnormal circuit is a circuit corresponding to the abnormal parameter.

[0047] The system collects current, voltage and other parameters of each circuit of the distribution system through the information acquisition module to monitor the operation of the main circuit and each branch. The system can compare and analyze the operation of each circuit with the input load information in real time, give a real-time analysis report of the system operation, and give alarms for overload, long-term low load and other situations. The monitoring system will also upload the operation data to the upper computer control platform. The operating personnel can understand the system operation status through the server and mobile terminal. The cloud platform analyzes the distribution system through historical data and gives a comprehensive optimization plan.

[0048] Figure 2 FIG. 1 shows a schematic diagram of a system to which the method is applicable, wherein the dashed line is the control module body. Figure 2 As shown, the device is mainly composed of a controller body (data acquisition module, alarm indication module, communication module) and a current transformer module.

[0049] 1. Data acquisition module. This module is used to collect the main circuit voltage, each circuit current, ambient temperature and humidity. Voltage signal: The main circuit voltage can collect three-phase and three-phase four-wire voltage signals; Current signal: The rated input current is 5A or 1A, and the current signal has multiple sets of current inputs, which are input through the matching current transformer; Environmental signal: The environmental signal is connected to multiple sets of temperature and humidity signals; The data acquisition module is scalable and can increase the input of current and temperature signals.

[0050] 2. Communication module. The communication module can communicate with the cloud platform or host computer through a wired or wireless network, and transmit the detected information to the cloud platform or host computer. The host computer can also configure the controller through the communication module.

[0051] 3. Alarm module. The alarm module can indicate the low load, normal, overload status of each circuit, the environmental conditions in the power distribution room and the power distribution cabinet through three-color LED lights. The alarm module has a dry contact output function that can be connected to an external alarm or a tripping mechanism that cuts off the relevant circuit. The relevant operating conditions and alarm thresholds can be set through the controller.

[0052] 4. Controller. The controller processes various signals from the data acquisition module and calculates the current, voltage, power factor, power, frequency and other parameters of each circuit. It can design the warning parameters of each circuit and also carry out corresponding logic warning design. That is, the module can monitor the voltage, current, power and other operating parameters of one or more circuits in the circuit, such as whether they are turned on, to output alarms or dry junction signals.

[0053] 5. Current transformer module. Current transformer module

[0054] It consists of a transformer body and a transformer bracket. The transformer bracket and the transformer body are equipped with wedge-shaped slots, which can be used to easily expand and replace the number of transformers. The position of the transformer bracket can be flexibly adjusted according to the internal space of the cabinet. The transformer modulus can be selected according to the needs of the circuit, and the measurement circuit can be expanded by adding transformer modules in the future.

[0055] Figure 3 A front view of a transformer module provided in an embodiment of the present application is shown, wherein 301 is a transformer body, 302 is a wiring terminal, 303 is a reserved position, and 304 is a transformer bracket. Figure 4 A top view of a transformer bracket provided in an embodiment of the present application is shown, where 401 is a wedge-shaped slot.

[0056] It can be seen that the low-voltage power distribution system operation status monitoring method provided by the embodiment of the present application realizes the measurement of multiple parameters such as multi-circuit electrical parameters and environmental parameters of the power distribution cabinet through the simple and compact design of the power distribution cabinet. The monitoring system realizes the working logic judgment and result output between multiple circuits through the control system in the controller, and can realize the logical judgment protection and early warning functions of certain process flows in a simple and convenient manner. Convenient card insertion can be expanded into the form of transformer module.

[0057] In summary, the embodiment of the present application provides a method for monitoring the operating status of a low-voltage power distribution system, by collecting monitoring data, the monitoring data includes the main circuit voltage signal, the current signal of each circuit and the environmental signal; further, the monitoring data is analyzed and processed, the operating parameters of the electrical equipment in each circuit are obtained respectively, and an operation analysis report is generated; it is determined whether there are abnormal parameters in the operating parameters of each circuit, and if there are abnormal parameters, an alarm is triggered. It effectively monitors the operating status of the power distribution system and the environment around the distribution cabinet. The system is highly integrated and can measure the current, voltage, power, frequency and power factor of multiple circuits at the same time, reducing the monitoring cost.

[0058] Based on the same technical concept, the embodiment of the present application also provides a low-voltage power distribution system operation status monitoring system, such as Figure 5 As shown, the system comprises:

[0059] The data acquisition module 501 is used to collect monitoring data, which includes the main circuit voltage signal, the current signal of each circuit, and the environmental signal.

[0060] The operating parameter acquisition module 502 is used to analyze and process the monitoring data, respectively acquire the operating parameters in each circuit, and generate an operating analysis report.

[0061] The alarm triggering module 503 is used to determine whether there are abnormal parameters in the operating parameters of the electrical equipment in each circuit, and if there are such abnormal parameters, an alarm is triggered.

[0062] In a possible implementation, the system further includes: a current transformer module, which is used to convert the original current signal in each loop into a monitorable current signal; wherein the number of current transformers in the current transformer module is adapted to the number of loops.

[0063] In a possible implementation, the system further includes: an optimization module, which is used to upload the monitored data and operation analysis report to a host computer, and the host computer records the operation analysis report and feeds back a comprehensive optimization solution in combination with historical records.

[0064] Based on the same technical concept, an embodiment of the present application also provides a device, which includes: a data acquisition device, a processor and a memory; the data acquisition device is used to collect data; the memory is used to store one or more program instructions; the processor is used to execute one or more program instructions to execute the described method.

[0065] Based on the same technical concept, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer storage medium contains one or more program instructions, and the one or more program instructions are used to execute the described method.

[0066] In this specification, each embodiment of the above method is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. For relevant parts, refer to the partial description of the method embodiment.

[0067] It should be noted that, although the operations of the method of the present invention are described in a specific order in the drawings, this does not require or imply that the operations must be performed in the specific order, or that all the operations shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0068] Although the present application provides method operation steps such as embodiments or flow charts, more or fewer operation steps may be included based on conventional or non-creative means. The order of steps listed in the embodiments is only one way of executing the order of many steps and does not represent the only execution order. When the device or client product in practice is executed, it can be executed in sequence or in parallel according to the method shown in the embodiments or the drawings (for example, a parallel processor or a multi-threaded processing environment, or even a distributed data processing environment). The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, product or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, product or device. In the absence of more restrictions, it is not excluded that there are other identical or equivalent elements in the process, method, product or device including the elements.

[0069] The units, devices or modules described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. For the convenience of description, the above devices are described separately by functions divided into various modules. Of course, when implementing this application, the functions of each module can be implemented in the same or more software and / or hardware, or the modules that implement the same function can be implemented by a combination of multiple sub-modules or sub-units. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0070] Those skilled in the art also know that, in addition to implementing the controller in a purely computer-readable program code, the controller can be made to implement the same function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, such a controller can be considered as a hardware component, and the devices for implementing various functions included therein can also be considered as structures within the hardware component. Or even, the devices for implementing various functions can be considered as both software modules for implementing the method and structures within the hardware component.

[0071] The present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0072] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly contributed to the prior art in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a mobile terminal, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.

[0073] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The present application can be used in many general or special computer system environments or configurations. The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above is only a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A method for monitoring the operating status of a low-voltage power distribution system, characterized in that: The method comprises: The original current signal in each loop is converted into a monitorable current signal by using a current transformer; wherein the number of the current transformers matches the number of loops, and the transformer body and the transformer bracket form a current transformer module, and the transformer bracket and the transformer body are provided with a wedge-shaped slot, which is used to realize the expansion and replacement of the number of transformers; Collect monitoring data, including main circuit voltage signals, current signals of various circuits, and environmental signals; Analyze and process the monitoring data, obtain the operating parameters and status of the electrical equipment in each circuit, and generate an operation analysis report; Determine whether there are abnormal parameters in the operating parameters of each circuit, and trigger an alarm if the abnormal parameters exist; wherein, determining whether there are abnormal parameters in the operating parameters of each circuit includes: presetting alarm thresholds for the operating parameters of each circuit, determining whether the operating parameters of each circuit have reached the alarm threshold, and defining the operating parameters that have reached the alarm threshold as the abnormal parameters.

2. The method according to claim 1, characterized in that After analyzing and processing the monitoring data to obtain the operating parameters in each circuit respectively, the method further includes: The monitored data and operation analysis report are uploaded to a host computer, which records the operation analysis report and feeds back a comprehensive optimization plan in combination with historical records.

3. The method according to claim 1, characterized in that After determining whether the operating parameters in each circuit have abnormal parameters and triggering an alarm if the abnormal parameters exist, the method further includes: Cut off the circuit breaker that supplies power to the abnormal circuit; wherein the abnormal circuit is the circuit corresponding to the abnormal parameter.

4. A low voltage power distribution system operation status monitoring system, characterized in that: The system comprises: A current transformer, using the current transformer to convert the original current signal in each loop into a monitorable current signal; wherein the number of the current transformers is adapted to the number of loops, and the transformer body and the transformer bracket constitute a current transformer module, and the transformer bracket and the transformer body are provided with a wedge-shaped slot, which is used to achieve the expansion and replacement of the number of transformers; A data acquisition module is used to collect monitoring data, wherein the monitoring data includes a main circuit voltage signal, current signals of each circuit, and an environmental signal; An operation parameter acquisition module is used to analyze and process the monitoring data, respectively acquire the operation parameters of the electrical equipment in each circuit, and generate an operation analysis report; The alarm triggering module is used to determine whether there are abnormal parameters in the operating parameters of each circuit, and if so, trigger an alarm.

5. The system according to claim 4, characterized in that The system further comprises: The optimization module is used to upload the monitored data and operation analysis report to the host computer, and the host computer records the operation analysis report and feeds back a comprehensive optimization plan in combination with historical records.

6. A device, characterized in that: The device comprises: a data acquisition device, a processor and a memory; The data acquisition device is used to acquire data; the memory is used to store one or more program instructions; the processor is used to execute one or more program instructions to execute the method according to any one of claims 1-3.

7. A computer-readable storage medium, characterized in that: The computer storage medium includes one or more program instructions, and the one or more program instructions are used to execute the method according to any one of claims 1-3.

Images