Intelligent awakening method and system for remote meter reading

Abstract

The invention discloses an intelligent awakening method and system for remote meter reading, and relates to the technical field of intelligent power grids, and the method comprises the steps: carrying out the installation and initialization of a hardware system; monitoring the power supply state in real time, and performing first judgment and second judgment to obtain the power supply state; performing power management and meter reading to obtain real-time state data and meter reading data; judging an abnormal condition, and transmitting a power supply operation state into a metering system; the invention provides intelligent power supply awakening and control of an on-site metering system and an automatic meter reading link, and mainly relates to management and control and monitoring of a remote power supply maintenance system and safety isolation of a power supply in an on-site station. The intelligent information and control technology is adopted to realize regular or random meter reading of a metering automation system of a terminal node which loses power for a long time, so that only manual on-site power-up awakening at present is changed into automatic awakening; operation is convenient and reliability is high. The whole system is low in cost. Manpower, material resources and management cost are greatly saved, and personal potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention relates to the field of smart grid technology, and in particular to a remote meter reading intelligent wake-up method and system. Background Art

[0002] In many remote areas or isolated power generation and consumption nodes, such as small hydropower stations, small wind and photovoltaic power plants with independent metering and settlement devices, and remote factories, power outages often occur due to operating characteristics and economic and technical limitations. The metering devices in these places are usually not equipped with auxiliary power or backup power, resulting in a complete power outage in the station, and the devices related to metering and data collection will also fail at the same time. This situation seriously affects the normal operation of the metering automation system, especially when regular meter reading is required.

[0003] In the event of a power outage, power grid companies usually need to dispatch staff to the site to perform manual meter readings. This method not only consumes a lot of manpower and time, but may also pose a threat to the personal safety of staff in remote areas or under severe weather conditions. Some existing technologies use timed backup power systems, but these systems usually rely on a single energy source (such as batteries) with limited endurance and cannot cope with long power outages; some systems are equipped with remote monitoring equipment, but these devices usually also require a stable power supply. When the power is completely lost in the station, the remote monitoring function cannot operate normally. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: the problem of automatic meter reading for remote and isolated power generation and consumption customers.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a remote meter reading intelligent wake-up method, comprising:

[0008] Install and initialize the hardware system;

[0009] Monitor the power supply status in real time, perform a first judgment and a second judgment, and obtain the power supply status;

[0010] Based on the power status, perform power management and meter reading to obtain real-time status data and meter reading data;

[0011] Based on the real-time status data and meter reading data, abnormal situations are determined, and the power supply operation status is transmitted to the metering system.

[0012] As a preferred solution for the remote meter reading intelligent wake-up method, the following are some of the solutions:

[0013] The first judgment includes:

[0014] The control module monitors the power status in the station in real time to determine whether the power is off. If the first judgment result shows that the power is off in the station, a second judgment is performed.

[0015] As a preferred solution for the remote meter reading intelligent wake-up method, the following are some of the solutions:

[0016] The second judgment includes:

[0017] The relay is used to determine whether it is necessary to switch to the backup power supply. If switching is required, the relay is started, the relay is energized, the normally closed contact is disconnected, the relay is energized, and the normally open contact is closed, so that the power supply circuit is switched from the normally closed circuit of the relay to the normally open circuit, realizing the energy storage battery power supply mode.

[0018] As a preferred solution for the remote meter reading intelligent wake-up method, the following are some of the solutions:

[0019] The installation and initialization of the hardware system includes:

[0020] Select the installation location and install the photovoltaic panels and small wind turbines;

[0021] The wind turbine is installed integrally with the photovoltaic panel, with the front of the photovoltaic panel facing the preset direction and maintaining a preset inclination angle with the ground;

[0022] Install energy storage batteries;

[0023] Connect the photovoltaic panels, small wind turbines and energy storage batteries to the MPPT module to ensure that the power module works properly;

[0024] The control module is installed in the control box and connected to the power module and the metering automation system.

[0025] As a preferred solution for the remote meter reading intelligent wake-up method, the following are some of the solutions:

[0026] The installation and initialization of the hardware system also includes:

[0027] System initialization settings: Initialize the system settings remotely or through dedicated software, including setting meter reading time and power switching logic.

[0028] As a preferred solution for the remote meter reading intelligent wake-up method, the following are some of the solutions:

[0029] The power management and meter reading include:

[0030] The MPPT module automatically adjusts the output of photovoltaic panels and small wind turbines to ensure that the energy storage battery is always in the best charging state, and automatically switches to power supply mode at meter reading time;

[0031] During the preset meter reading time, the system automatically switches to energy storage battery power supply to ensure the normal operation of the metering automation system and complete data collection and upload.

[0032] As a preferred solution for the remote meter reading intelligent wake-up method, the following are some of the solutions:

[0033] The determining of abnormal conditions and transmitting the power supply operation status to the metering system includes:

[0034] Real-time monitoring of system operating status, battery parameters and meter reading data through remote management system;

[0035] The real-time sensing status is stored by the processing module for remote reading.

[0036] In a second aspect, an embodiment of the present invention provides a remote meter reading intelligent wake-up system, comprising:

[0037] System installation and initialization module, to install and initialize the hardware system;

[0038] A power state monitoring and judgment module is used to monitor the power state in real time, perform a first judgment and a second judgment, and obtain the power state;

[0039] The power management and meter reading module is used to perform power management and meter reading based on the power status, and obtain real-time status data and meter reading data;

[0040] The system operation monitoring and data feedback module is used to judge abnormal situations based on the real-time status data and meter reading data, and transmit the power supply operation status to the metering system.

[0041] In a third aspect, an embodiment of the present invention provides a computing device, including:

[0042] Memory and processor;

[0043] The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the one or more programs are executed by the one or more processors, the one or more processors implement the remote meter reading intelligent wake-up method as described in any embodiment of the present invention.

[0044] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the remote meter reading intelligent wake-up method.

[0045] Beneficial effects of the invention: The invention provides intelligent power awakening and control of the on-site metering system and the automatic meter reading link, mainly involving the control, monitoring, and safe isolation of the remote power supply maintenance system from the local station power supply; the intelligent information and control technology is used to realize the metering automation system of the terminal node that has been out of power for a long time, which makes it possible to change the current manual on-site power awakening to automatic awakening; it is easy to operate and has high reliability. The whole system is low-cost. It greatly saves manpower, material resources and management costs, and reduces personal safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0047] Figure 1 It is an overall flow chart of the remote meter reading intelligent wake-up method of the present invention;

[0048] Figure 2 It is the structure and logic control diagram of the remote meter reading intelligent wake-up method of the present invention;

[0049] Figure 3 It is a power supply structure diagram of the remote meter reading intelligent wake-up method of the present invention;

[0050] Figure 4 The invention discloses a logic control wiring diagram of the remote meter reading intelligent awakening method. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0053] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0054] Example 1

[0055] Reference Figure 1 , which is the first embodiment of the present invention, and provides a remote meter reading intelligent wake-up method, comprising:

[0056] S1: Install and initialize the hardware system;

[0057] S2: monitor the power supply status in real time, perform the first judgment and the second judgment, and obtain the power supply status;

[0058] S3: Based on the power status, perform power management and meter reading to obtain real-time status data and meter reading data;

[0059] S4: Based on the real-time status data and meter reading data, determine the abnormal situation and transmit the power supply operation status to the metering system.

[0060] It should be noted that on the end-user side, especially on the unidirectional power flow side, such as remote small hydropower and remote factories, if the small hydropower does not generate electricity or the factory power supply line is out of power, the power station and the factory will lose power, and the metering and collection systems will also lose power, resulting in the inability to perform automatic meter reading. Then this system is immediately put into operation as a wake-up power supply: photovoltaic panels and small wind turbines generate electricity and send it to the system energy storage power supply. The storage and discharge control module detects that the metering system loses power, and the controller issues a command to start the energy storage power supply to access the metering automatic meter reading system. The switching time is 60S. The metering automation system power supply and the wake-up power supply are switched by a strictly mechanical switching relay to avoid conflicts between the power supply in the station and the energy storage power supply of this system. After testing, the wake-up success rate is 100%. Even if it is cloudy and rainy, the wake-up power supply can be kept in standby for more than 3 months.

[0061] Example 2

[0062] Reference Figure 1-Figure 3 , is an embodiment of the present invention, and provides a remote meter reading intelligent wake-up method based on the previous embodiment, comprising:

[0063] In the embodiment of the present application, the installation and initialization of the hardware system in the above step S1 includes:

[0064] The overall structure of the hardware system is as follows Figure 2 As shown;

[0065] Choose the installation location: In a remote small hydropower station, wind power photovoltaic farm or remote factory, choose a suitable location to install the system to ensure that the photovoltaic panels and small wind turbines can receive sufficient sunlight and wind energy.

[0066] Installation of photovoltaic panels and small wind turbines: According to the site environment, choose the best angle and position to install photovoltaic panels and small wind turbines to ensure their maximum power generation efficiency. The wind turbine and photovoltaic panel are installed in an integrated manner, with the front of the photovoltaic panel facing due south and tilted 15° to the ground to ensure that the output power lines of the wind turbine and photovoltaic panel are lightning-proof and break-proof.

[0067] Install the energy storage battery: Install the lithium iron phosphate 12V100AH ​​battery pack in a waterproof and dustproof battery box to ensure battery safety.

[0068] Connect the power module: Figure 3 As shown, according to the design drawings, the photovoltaic panels, small wind turbines and energy storage batteries are connected to the photovoltaic maximum power tracking (MPPT) module to ensure that the power module works normally.

[0069] Install the control module: Install the control module (including relays and control circuit board) in a dustproof and waterproof control box and connect it to the power module and metering automation system.

[0070] System initialization settings: Initialize the system through mobile phone APP or dedicated software, including setting meter reading time and power switching logic.

[0071] In another possible implementation, when selecting the installation location, in addition to ensuring that the photovoltaic panels and small wind turbines can receive sufficient sunlight and wind energy, geological conditions and meteorological factors such as soil bearing capacity, wind speed distribution, annual sunshine hours, etc. should also be considered to optimize the long-term operating efficiency of the system. Geographic Information System (GIS) and remote sensing technology can also be used to conduct a comprehensive analysis of candidate locations and select the best installation point.

[0072] In another possible implementation, when installing photovoltaic panels and small wind turbines, when selecting the best angle and position, professional solar energy and wind energy assessment software can be used to simulate the power generation efficiency under different conditions to determine the optimal configuration; for the installation of photovoltaic panels, consider using adjustable brackets to adjust the inclination according to seasonal changes to further improve the utilization rate of light energy; for the installation of wind turbines, stability and safety should be ensured, and necessary wind and earthquake protection measures should be taken.

[0073] In another possible implementation, when installing the energy storage battery, before installing the energy storage battery, a comprehensive quality inspection is performed on the battery to ensure that its performance meets the design requirements. Consider using an intelligent battery management system (BMS) to monitor the battery status in real time, such as voltage, current, temperature, etc., to ensure the safe and efficient operation of the battery.

[0074] In another possible implementation, when connecting the power module, high-quality cables and connectors are used during the connection process to reduce energy loss and failure risks. The connected power module is rigorously tested to ensure that its stability and efficiency meet expectations.

[0075] In another possible implementation, when installing the control module, the installation of the control module should take into account easy maintenance and upgrading, and facilitate subsequent system management. When connecting to the power module and the metering automation system, necessary lightning protection and anti-static measures should be taken to protect the control module from external interference.

[0076] In another possible implementation, when performing initialization settings, a remote configuration function may be introduced so that the system can be flexibly adjusted according to actual conditions. After the settings are completed, a comprehensive system test is performed to ensure that all functions operate normally and meet the design requirements.

[0077] In the embodiment of the present application, the first judgment and the second judgment in the above step S2 include:

[0078] First judgment: The control module monitors the AC220V power supply status in the station in real time, and judges whether it needs to switch to the backup power supply through the relay. The power supply in the station is connected to the normally closed contact of the relay, that is, the system defaults the power supply in the station as the common power supply, and the normally open contact circuit of the relay is connected to the power supply of this system to ensure reliable isolation between the power supply in the station and the backup power supply of this system.

[0079] The second judgment: judge the power status in the station. When it is detected that the power supply in the station is off, the control module immediately starts the relay, the relay is energized, the normally closed contact is disconnected, the relay is energized, and the normally open contact is closed, so that the power supply circuit is switched from the normally closed circuit of the relay to the normally open circuit, realizing the energy storage battery power supply mode.

[0080] In the embodiment of the present application, the power management and meter reading in the above step S3 include:

[0081] The MPPT module automatically adjusts the output of photovoltaic panels and small wind turbines to ensure that the energy storage battery is always in the best charging state, and automatically switches to power supply mode at meter reading time;

[0082] During the preset meter reading time, the system automatically switches to energy storage battery power supply to ensure the normal operation of the metering automation system and complete data collection and upload.

[0083] In the embodiment of the present application, judging abnormal conditions based on the real-time status data and meter reading data in the above step S4, and transmitting the power supply operation status to the metering system includes:

[0084] Through the mobile phone APP or background management system, the system operation status, battery parameters and meter reading data can be monitored in real time to promptly detect and handle abnormal situations; the power detection module can sense in real time: whether the current power supply is the station power supply or the system power supply and the power level of the system power supply.

[0085] The real-time perception status is stored through the processing module for remote reading.

[0086] The monitoring and feedback module uses GPRS communication or enters the meter reading management terminal to conduct secondary development on the backend of the meter reading management terminal, and can transmit the operating status of the power supply of this system to the metering automation system in real time.

[0087] Example 3

[0088] The above is a schematic scheme of the remote meter reading intelligent wake-up method of this embodiment. It should be noted that the technical scheme of the remote meter reading intelligent wake-up system and the technical scheme of the remote meter reading intelligent wake-up method belong to the same concept. For details not described in detail in the technical scheme of the remote meter reading intelligent wake-up system in this embodiment, please refer to the description of the technical scheme of the remote meter reading intelligent wake-up method.

[0089] This embodiment also provides a system based on the remote meter reading intelligent wake-up method, including:

[0090] System installation and initialization module, to install and initialize the hardware system;

[0091] A power state monitoring and judgment module is used to monitor the power state in real time, perform a first judgment and a second judgment, and obtain the power state;

[0092] The power management and meter reading module is used to perform power management and meter reading based on the power status, and obtain real-time status data and meter reading data;

[0093] The system operation monitoring and data feedback module is used to judge abnormal situations based on the real-time status data and meter reading data, and transmit the power supply operation status to the metering system.

[0094] This embodiment further provides a computing device, which is applicable to the case of the remote meter reading intelligent wake-up method, including:

[0095] Memory and processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement the remote meter reading intelligent wake-up method proposed in the above embodiment.

[0096] This embodiment further provides a storage medium on which a computer program is stored. When the program is executed by a processor, the remote meter reading intelligent wake-up method proposed in the above embodiment is implemented.

[0097] The storage medium proposed in this embodiment and the remote meter reading intelligent wake-up method proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0098] Example 4

[0099] Reference Figure 4 , which is an embodiment of the present invention, provides a remote meter reading intelligent wake-up method. In order to verify the beneficial effects of the present invention, a scientific demonstration is carried out through simulation experiments.

[0100] The development module is divided into three parts:

[0101] Power module:

[0102] The photovoltaic sunshine parameters in the region of this embodiment are as follows: abundant light resources, an annual average wind speed of 5.75 meters per second, an annual sunshine time of more than 1,600 hours, and an average limited sunshine time of 4.44 hours.

[0103] Battery assembly of this embodiment: Based on the calculation of the average daily power consumption of the load and the average daily power generation of the assembly, this system is powered by a 12V100AH ​​battery. The battery module uses a 12V100AH ​​lithium iron phosphate battery, which is composed of 4 cells connected in series. It uses a protection board with overheating, overcurrent, and overvoltage protection, and has a Bluetooth monitoring module. The mobile phone APP can monitor the battery parameters in real time.

[0104] The battery capacity of this embodiment is calculated based on the average daily power consumption of the load, the number of consecutive rainy days and the maximum discharge depth. The terminal power of this system is ≤20W, and the daily power consumption is ≤0.48KWh. According to the photovoltaic daily power generation time on rainy days, 4.44*300W*photovoltaic power generation η=Pm / A×Pin*20%-40%=0.264-0.528kWh, calculated based on the extreme daily power generation of photovoltaic power generation of 0.264Kwh, the battery can continuously replenish 1200Wh / 0.48-0.264=5.56 days.

[0105] In this embodiment, the charging voltage is: Vmax = Vrated × 1.43 times, the single cell voltage range is 3.084v-3.284V, and the charging voltage range is 3.084*4*1.43v-3.284*4*3.284v

[0106] Photovoltaic conversion efficiency of this embodiment: η = Pm (peak power of photovoltaic chip) / A (area of ​​photovoltaic chip) × Pin (incident light power per unit area) where Pin = 1KW / square meter = 100 milliwatts / square centimeter. This system uses 3 groups of Pm = 100w, voltage Vmax = 18v, area 1025*541mm, peak current 5.56A, a total of 3 groups in series, output voltage 18*3 = 54V, output peak current 5.56A, output peak power 300W.

[0107] Photovoltaic maximum power tracking MTTP module:

[0108] 1. Input voltage 18V-90V Output 2V-60V

[0109] 2. Output current 0-25A adjustable output current limiting short circuit protection

[0110] 3. Standby power consumption is 0.9W during the day, and automatic backflow prevention at night with 0 power consumption

[0111] 4. The activation-free rechargeable battery can be automatically charged without supervision.

[0112] 5. The battery can be charged even on rainy days. It will automatically charge when out of power and stop when full.

[0113] 6. Support adaptive 5W-800W photovoltaic panels

[0114] 7. Automatic temperature control fan cooling

[0115] 8. Support DC-DC regulated power supply output and can directly carry loads such as heating tubes

[0116] Control Module:

[0117] 1. Use relay physical contacts to complete input and output logic control.

[0118] 2. Logic control algorithm:

[0119] ① Take the AC220V of the power station as the system sampling voltage (if the original power supply of the load is also AC220v, it can be sampled in parallel with the sampling voltage input terminal, and the polarity must be the same), connect the relay drive coil, if the sampling voltage is normal, the relay will act: 2-3, 5-6, 8-9 contacts are closed and energized, and the original power supply supplies power to the load normally;

[0120] ②If the sampling voltage is powered off, the relay is disconnected and the normally closed contacts 1-2, 4-5, and 7-8 are energized.

[0121] ③7-8 turns on the system inverter switch, and the system outputs AC220V uninterruptible power supply to the load through 1-2 and 4-5. After the power outage, the system returns to ① and continues to execute.

[0122] Logic control wiring diagram Figure 4 shown.

[0123] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A remote meter reading intelligent wake-up method, characterized in that: include: Install and initialize the hardware system; Monitor the power supply status in real time, perform a first judgment and a second judgment, and obtain the power supply status; Based on the power status, perform power management and meter reading to obtain real-time status data and meter reading data; Based on the real-time status data and meter reading data, abnormal situations are determined, and the power supply operation status is transmitted to the metering system.

2. The remote meter reading intelligent wake-up method according to claim 1, characterized in that: The first judgment includes: The control module monitors the power status in the station in real time to determine whether the power is off. If the first judgment result shows that the power is off in the station, a second judgment is performed.

3. The remote meter reading intelligent wake-up method according to claim 2, characterized in that: The second judgment includes: The relay is used to determine whether it is necessary to switch to the backup power supply. If switching is required, the relay is started, the relay is energized, the normally closed contact is disconnected, the relay is energized, and the normally open contact is closed, so that the power supply circuit is switched from the normally closed circuit of the relay to the normally open circuit, realizing the energy storage battery power supply mode.

4. The remote meter reading intelligent wake-up method according to claim 3, characterized in that: The installation and initialization of the hardware system includes: Select the installation location and install photovoltaic panels and small wind turbines; The wind turbine is installed integrally with the photovoltaic panel, with the front of the photovoltaic panel facing the preset direction and maintaining a preset inclination angle with the ground; Install energy storage batteries; Connect the photovoltaic panels, small wind turbines and energy storage batteries to the MPPT module to ensure that the power module works properly; The control module is installed in the control box and connected to the power module and the metering automation system.

5. The remote meter reading intelligent wake-up method according to claim 4, characterized in that: The installation and initialization of the hardware system also includes: System initialization settings: Initialize the system settings remotely or through dedicated software, including setting meter reading time and power switching logic.

6. The remote meter reading intelligent wake-up method according to claim 5, characterized in that: The power management and meter reading include: The MPPT module automatically adjusts the output of photovoltaic panels and small wind turbines to ensure that the energy storage battery is always in the best charging state, and automatically switches to power supply mode at meter reading time; During the preset meter reading time, the system automatically switches to energy storage battery power supply to ensure the normal operation of the metering automation system and complete data collection and upload.

7. The remote meter reading intelligent wake-up method according to claim 6, characterized in that: The determining of abnormal conditions and transmitting the power supply operation status to the metering system includes: Real-time monitoring of system operating status, battery parameters and meter reading data through remote management system; The real-time sensing status is stored by the processing module for remote reading.

8. A system using the remote meter reading intelligent wake-up method according to any one of claims 1 to 7, characterized in that: include: System installation and initialization module, to install and initialize the hardware system; A power state monitoring and judgment module is used to monitor the power state in real time, perform a first judgment and a second judgment, and obtain the power state; The power management and meter reading module is used to perform power management and meter reading based on the power status, and obtain real-time status data and meter reading data; The system operation monitoring and data feedback module is used to judge abnormal situations based on the real-time status data and meter reading data, and transmit the power supply operation status to the metering system.

9. A computing device comprising: Memory and processor; The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the remote meter reading intelligent wake-up method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions, when executed by a processor, implement the steps of the remote meter reading intelligent wake-up method according to any one of claims 1 to 7.

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