Electric power parameter digital monitoring alarm device

Abstract

The invention relates to the field of electric power parameter monitoring and alarming, and particularly discloses an electric power parameter digital monitoring and alarming device which comprises a central processing host and at least one monitoring terminal device distributed in different places, and the central processing host is interconnected with each monitoring terminal device through an optical transmission network; a first network switch is configured at the central processing host, and a second network switch is configured at the monitoring terminal equipment; electric power parameters can be collected in real time through the monitoring terminal equipment and transmitted to the central processing host in time through the optical transmission network, and comprehensive and real-time monitoring of an electric power system is ensured; the central processing host and the monitoring terminal devices distributed in different places are connected through the optical transmission network, the high-speed, large-bandwidth and low-loss characteristics of optical fibers are utilized, efficient and stable transmission of electric power parameter data is ensured, when voltage abnormity is detected, sound-light alarm of the central processing host can be triggered, and the timely reminding effect is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of power parameter monitoring and alarm, and more specifically, it is a digital monitoring and alarm device for power parameters. Background Art

[0002] Digitalization of power parameters refers to the process of converting various parameters (such as voltage, current, power, frequency, etc.) in the power system into digital signals through advanced sensing technology, data acquisition technology, and communication technology, and then storing, processing, analyzing, and transmitting them. This process enables real-time monitoring, precise control, and efficient management of the power system, and is an important foundation for the intelligent and automated development of the power system.

[0003] Traditional power monitoring systems are often limited to local or short-distance monitoring, and it is difficult to achieve wide coverage monitoring of the power system. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a digital monitoring and alarm device for power parameters to solve the problem that traditional power monitoring systems in the prior art are often limited to local or short-distance monitoring and it is difficult to achieve wide coverage monitoring of the power system.

[0005] The digital monitoring and alarm device for power parameters includes a central processing host and at least one remotely distributed monitoring terminal device, and the central processing host is interconnected with each monitoring terminal device through an optical transmission network;

[0006] A first network switch is configured at the central processing host, a second network switch is configured at the monitoring terminal device, the monitoring terminal device is connected to the second network switch through a network cable, and the second network switch is sequentially connected to a remote optical transmission device, a cascaded optical transmission device, and a proximal optical transmission device through optical fibers, and finally connected to the first network switch through an optical fiber to establish communication with the central processing host;

[0007] The central processing host includes:

[0008] A data parsing module for receiving and parsing the status messages uploaded by each monitoring terminal device;

[0009] A visualization interface for real-time displaying the phase voltage values and phase states of each monitoring point;

[0010] An abnormal alarm module for triggering an audible and visual alarm when a voltage abnormality is detected.

[0011] Preferably, the monitoring terminal device includes:

[0012] A multimode signal acquisition module configured with switchable single-phase power input interfaces and three-phase power input interfaces;

[0013] An analog-to-digital conversion unit for converting the collected analog voltage signal into a digital signal;

[0014] An embedded processor for analyzing and processing voltage data in real time and generating status messages.

[0015] Preferably, the multi-mode signal acquisition module directly acquires the L-N line voltage signal in the single-phase power detection mode, and synchronously acquires the voltage signals of three phases A, B, and C in the three-phase power detection mode. Each acquisition channel is provided with an independent optoelectronic isolation circuit.

[0016] Preferably, the analog-to-digital conversion unit uses a 16-bit high-precision ADC chip, the sampling frequency is configured from 50Hz to 10kHz, and a voltage signal conditioning circuit is provided, including a programmable gain amplifier and an anti-aliasing filter.

[0017] Preferably, the abnormal alarm module is provided with a hierarchical alarm mechanism, and corresponding alarms are triggered when any of the following situations is detected:

[0018] The single-phase system voltage exceeds the range of [198V, 242V];

[0019] The voltage deviation of any phase in the three-phase system exceeds ±15% of the nominal value;

[0020] At least one phase voltage loss is detected in the three-phase system;

[0021] Voltage sags / surges exceeding 20% occur within 3 consecutive sampling periods.

[0022] Preferably, the single-phase power input interface adopts a three-hole socket structure, and the three-phase power input interface adopts a five-hole industrial connector. Each interface is provided with an anti-misinsertion mechanical coding and an overvoltage protection circuit.

[0023] Preferably, the optical transport network adopts a ring topology structure. The remote optical transport device is connected to the cascaded optical transport device through a single-mode optical cable, supporting 10 / 100 / 1000M adaptive Ethernet transmission.

[0024] Preferably, the visualization interface dynamically displays the real-time voltage waveforms of each phase, vector diagrams show the phase relationship of the three-phase voltages, phase loss indication marks, and the voltage values and historical data trend curves of the corresponding missing phases in the three-phase power monitoring mode.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] Through the monitoring terminal device, power parameters can be collected in real time and transmitted to the central processing host in a timely manner through the optical transport network, ensuring comprehensive and real-time monitoring of the power system;

[0027] The central processing host and remotely distributed monitoring terminal devices are interconnected through an optical transmission network. Utilizing the high-speed, large-bandwidth, and low-loss characteristics of optical fibers, the efficient and stable transmission of power parameter data is ensured. When abnormal voltage is detected, it can trigger the acoustic and optical alarm of the central processing host, achieving the function of timely reminder;

[0028] The first network switch configured in the central processing host, the second network switch configured in the monitoring terminal device, and the settings of the remote, cascaded, and proximal optical transmission devices constitute a flexible and reliable communication network, supporting long-distance and multi-node data monitoring and transmission;

[0029] The multimode signal acquisition module of the monitoring terminal device supports the detection of single-phase electricity and three-phase electricity. The analog-to-digital conversion unit uses a high-precision ADC chip to ensure the accurate acquisition and conversion of voltage data. Brief Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention. Detailed Embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figure 1 shown:

[0033] Embodiment 1: The present invention provides a power parameter digital monitoring and alarm device, including a central processing host 1 and at least one remotely distributed monitoring terminal device 2. The central processing host 1 and each monitoring terminal device 2 are interconnected through an optical transmission network;

[0034] A first network switch 3 is configured at the central processing host 1, and a second network switch 4 is configured at the monitoring terminal device 2. The monitoring terminal device 2 is connected to the second network switch 4 through a network cable. The second network switch 4 is sequentially connected to a remote optical transmission device 5, a cascaded optical transmission device 6, and a proximal optical transmission device 7 through optical fibers, and finally connected to the first network switch 3 through an optical fiber to establish communication with the central processing host 1;

[0035] Among them, the central processing host 1 is responsible for data processing, alarm decision-making, and communication with each monitoring terminal device;

[0036] The monitoring terminal devices 2 are distributed remotely and are used to collect power parameters (such as voltage, current, power factor, etc.) in real time and upload the data to the central processing host.

[0037] The optical transmission network provides a high-speed and reliable communication link to ensure data transmission between the central processing host and the monitoring terminal devices.

[0038] The first network switch 3 is located at the central processing host 1 and serves as a communication hub, connecting the central processing host to the remote optical transmission equipment.

[0039] The second network switch 4 is located at the monitoring terminal device 2 and is responsible for collecting the data of the terminal device through the network cable and uploading it to the optical transmission network through the optical fiber.

[0040] The remote optical transmission equipment 5, the cascaded optical transmission equipment 6, and the proximal optical transmission equipment 7 constitute the main body of the optical transmission network and are responsible for long-distance and high-speed data transmission. These devices are connected in sequence through optical fibers to form one or more communication paths.

[0041] The central processing host 1 includes:

[0042] A data parsing module for receiving and parsing the status messages uploaded by each monitoring terminal device 2;

[0043] A visualization interface for real-time displaying the phase voltage values and phase states of each monitoring point;

[0044] An abnormal alarm module that triggers an audible and visual alarm when a voltage abnormality is detected;

[0045] Among them, the data parsing module is responsible for receiving the status messages from each monitoring terminal device 2 and parsing these messages to extract power parameters (such as phase voltage, current, etc.) and status information.

[0046] The visualization interface provides an intuitive user interface for real-time displaying the phase voltage values, phase states, and possible abnormality prompts of each monitoring point, facilitating the operation and maintenance personnel to quickly understand the operating conditions of the power system.

[0047] The abnormal alarm module has preset voltage thresholds. When the parsed voltage data exceeds these thresholds, it triggers an audible and visual alarm to remind the operation and maintenance personnel to pay attention and take corresponding measures.

[0048] As can be seen from the above, the present invention constructs a monitoring system composed of a central processing host and at least one remotely distributed monitoring terminal device; the central processing host and each monitoring terminal device are efficiently interconnected through an optical transmission network, ensuring long-distance and stable transmission of data; a first network switch is configured at the central processing host for receiving and processing data from the monitoring terminal devices; the monitoring terminal devices are finally connected to the central processing host through a second network switch and the cascading of remote, cascaded and proximal optical transmission devices; the central processing host is built-in with a data parsing module responsible for parsing the status messages uploaded by the monitoring terminal devices; the visualization interface displays the power parameter status of each monitoring point in real time; the abnormal alarm module can immediately trigger an audible and visual alarm when detecting voltage abnormalities; the device realizes comprehensive and real-time monitoring and early warning of power parameters, improving the safety and reliability of the power system.

[0049] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that the monitoring terminal device 2 includes:

[0050] A multimode signal acquisition module configured with switchable single-phase power input interfaces and three-phase power input interfaces;

[0051] The multimode signal acquisition module has switchable single-phase power input interfaces and three-phase power input interfaces, and can flexibly adapt to different power monitoring requirements. In the single-phase power detection mode, the L-N line voltage signal is directly collected; in the three-phase power detection mode, the voltage signals of three phases, namely phase A, phase B, and phase C, are synchronously collected. Each acquisition channel is provided with an independent optoelectronic isolation circuit to ensure the accuracy and safety of signal acquisition.

[0052] An analog-to-digital conversion unit for converting the collected analog voltage signal into a digital signal;

[0053] The analog-to-digital conversion unit uses a 16-bit high-precision ADC chip, and the sampling frequency is configured from 50Hz to 10kHz, which can accurately convert the analog voltage signal into a digital signal. At the same time, a voltage signal conditioning circuit is provided, including a programmable gain amplifier and an anti-aliasing filter, further improving the accuracy and stability of signal conversion

[0054] An embedded processor for analyzing and processing voltage data in real time and generating status messages;

[0055] The embedded processor analyzes and processes voltage data in real time, and generates status messages according to preset algorithms and thresholds. The status messages include information such as the values and phase states of the voltages of each phase and possible abnormality prompts.

[0056] As described above, in this embodiment, the monitoring terminal device is built-in with a multi-mode signal acquisition module, which is flexibly configured with switchable single-phase and three-phase power input interfaces to meet the monitoring requirements of different power environments; in the single-phase power detection mode, the L-N line voltage signal is directly collected; in the three-phase power detection mode, the voltage signals of three channels of phase A, phase B, and phase C are synchronously collected, and each acquisition channel is equipped with an independent optoelectronic isolation circuit to ensure the accuracy and stability of signal acquisition; in addition, the monitoring terminal device is also equipped with an analog-to-digital conversion unit, which uses a 16-bit high-precision ADC chip, supports a sampling frequency of 50Hz to 10kHz, and is equipped with a voltage signal conditioning circuit, including a programmable gain amplifier and an anti-aliasing filter, further improving the acquisition accuracy and processing ability of voltage data.

[0057] Embodiment 3: This embodiment is basically the same as the previous embodiment, except that the abnormal alarm module is provided with a hierarchical alarm mechanism, and corresponding alarms are triggered when any of the following situations is detected:

[0058] When the single-phase system voltage exceeds the range of [198V, 242V], a low-level alarm can be triggered (such as the yellow indicator light flashing and displaying the corresponding alarm point);

[0059] When the voltage deviation of any phase in the three-phase system exceeds ±15% of the nominal value, a medium-level alarm can be triggered (such as the red indicator light flashing and accompanied by a beeping sound, and displaying the corresponding alarm point);

[0060] When at least one phase voltage loss is detected in the three-phase system, a high-level alarm can be triggered (such as a continuous beeping sound and turning on the emergency alarm light, and displaying the corresponding alarm point);

[0061] When the voltage sag / surge exceeds 20% within 3 consecutive sampling periods, corresponding-level alarms are triggered according to the duration and influence range of the voltage abnormality.

[0062] Specifically, the single-phase power input interface adopts a three-hole socket structure, and the three-phase power input interface adopts a five-hole industrial connector. Each interface is provided with an anti-misinsertion mechanical code and an overvoltage protection circuit.

[0063] Specifically, the optical transport network adopts a ring topology structure. The remote optical transport device 5 and the cascaded optical transport device 6 are connected by a single-mode optical cable, supporting 10 / 100 / 1000M adaptive Ethernet transmission.

[0064] Specifically, the visualization interface dynamically displays the real-time voltage waveforms of each phase, the vector diagram shows the phase relationship of the three-phase voltages, the phase-loss indication mark, the voltage value of the corresponding missing phase, and the historical data trend curve in the three-phase power monitoring mode.

[0065] As can be seen from the above, in this embodiment, the abnormal alarm module has added a hierarchical alarm mechanism, which can timely trigger corresponding alarms for abnormal situations such as out-of-range single-phase system voltage, excessive three-phase system voltage deviation, voltage loss, and voltage sag / surge, improving the safety and reliability of the system; at the same time, the single-phase and three-phase power input interfaces respectively adopt three-hole sockets and five-hole industrial connectors, both of which are equipped with anti-misinsertion mechanical coding and overvoltage protection circuits to ensure the safety and usability of the interfaces; the optical transport network adopts a ring topology structure, connects the remote and cascaded optical transport devices through single-mode optical cables, and supports adaptive Ethernet transmission, improving the flexibility and stability of the network; in addition, the visualization interface has richer functions in the three-phase power monitoring mode, can dynamically display the real-time voltage waveforms and phase relationships of each phase, and provides more intuitive and comprehensive monitoring information for operation and maintenance personnel.

[0066] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, details are not described herein. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0067] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0070] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not have to be directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0071] In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0072] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The digital monitoring and alarm device for electric power parameters is characterized by: It comprises a central processing host (1) and at least one remotely distributed monitoring terminal device (2), wherein the central processing host (1) and each monitoring terminal device (2) are interconnected via an optical transmission network; The central processing host (1) is provided with a first network switch (3), the monitoring terminal device (2) is provided with a second network switch (4), the monitoring terminal device (2) is connected to the second network switch (4) via a network cable, the second network switch (4) is connected to a remote optical transmission device (5), a cascade optical transmission device (6) and a near-end optical transmission device (7) in sequence via optical fibers, and finally connected to the first network switch (3) via optical fibers and establishes communication with the central processing host (1); The central processing host (1), the monitoring terminal device (2), the first network switch (3), the second network switch (4), the remote optical transmission device (5), the cascade optical transmission device (6) and the near-end optical transmission device (7) are all provided with unique IP addresses; The central processing host (1) comprises: A data analysis module, used for receiving and analyzing status messages uploaded by each monitoring terminal device (2); Visual interface, real-time display of phase voltage value and phase status of each monitoring point; Abnormal alarm module, triggers sound and light alarm when voltage abnormality is detected.

2. The digital monitoring and alarm device for electric power parameters according to claim 1, characterized in that: The monitoring terminal device (2) comprises: A multi-mode signal acquisition module is provided with a switchable single-phase electrical input interface and a three-phase electrical input interface; An analog-to-digital conversion unit, used to convert the collected analog voltage signal into a digital signal; The embedded processor is used to analyze and process voltage data in real time and generate status messages, and upload the status messages to a central processing host (1) via the IP address of the device.

3. The digital monitoring and alarm device for electric power parameters as claimed in claim 2, characterized in that: The multi-mode signal acquisition module directly acquires the LN line voltage signal in the single-phase electrical detection mode, and synchronously acquires the three-way voltage signals of phase A, phase B, and phase C in the three-phase electrical detection mode. Each acquisition channel is provided with an independent photoelectric isolation circuit.

4. The digital monitoring and alarm device for electric power parameters as claimed in claim 3, characterized in that: The analog-to-digital conversion unit adopts a 16-bit high-precision ADC chip, the sampling frequency is configured to be 50Hz-10kHz, and is provided with a voltage signal conditioning circuit including a programmable gain amplifier and an anti-aliasing filter.

5. The digital monitoring and alarm device for electric power parameters according to claim 1, characterized in that: The abnormal alarm module is provided with a hierarchical alarm mechanism. When any of the following situations is detected, an alarm message is sent to the central processing host (1) via the IP network and a corresponding alarm is triggered: The single-phase system voltage exceeds the range of [198V, 242V]; The voltage deviation of any phase of the three-phase system exceeds the nominal value by ±15%; At least one phase voltage loss is detected in a three-phase system; The voltage sag / swell exceeds 20% for three consecutive sampling periods.

6. The digital monitoring and alarm device for electric power parameters as claimed in claim 2, characterized in that: The single-phase power input interface adopts a three-hole socket structure, and the three-phase power input interface adopts a five-hole industrial connector. Each interface is provided with an anti-misinsertion mechanical coding and an overvoltage protection circuit, and is configured with a corresponding IP address through a network interface for remote management and configuration.

7. The digital monitoring and alarm device for electric power parameters according to claim 1, characterized in that: The optical transmission network adopts a ring topology structure, and the remote optical transmission device (5) and the cascade optical transmission device (6) are connected via a single-mode optical cable, supporting 10 / 100 / 1000M adaptive Ethernet transmission.

8. The digital monitoring and alarm device for electric power parameters according to claim 1, characterized in that: The visualization interface dynamically displays the real-time voltage waveform of each phase in the three-phase power monitoring mode, a vector diagram showing the phase relationship of the three-phase voltage, a phase loss indication mark and the voltage value of the corresponding missing phase and a historical data trend curve, and obtains real-time data from each monitoring terminal device (2) through an IP network.

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