Meter changing device without power failure

Abstract

The invention belongs to the technical field of uninterruptible power meter replacement. An uninterruptible meter changing device is characterized by comprising a box body, a panel, a box cover, a control system, a power outgoing line, a power incoming line, a power connecting line, a relay, a liquid crystal display screen, a meter changing switch and a power switch, the panel is provided with a power input interface, a power output interface, a liquid crystal display screen, a meter changing switch, a power switch and a single-phase / three-phase meter changing change-over switch. One end of the power inlet wire is connected with a power supply, the other end of the power inlet wire is connected with the power input interface, one end of the power outlet wire is connected with the power output interface, and the other end of the power outlet wire is connected with a miniature circuit breaker at a user side; the power input interface and the power output interface are connected through a power connecting line, and a relay is arranged on the power connecting line; and the liquid crystal display screen, the meter changing switch and the single-phase / three-phase meter changing change-over switch are respectively connected with the control system. The device can replace the electric energy meter without power failure, and has the characteristics of safety, reliability and high efficiency.

Description

Technical Field

[0001] This invention belongs to the field of uninterrupted meter replacement technology, and specifically relates to an uninterrupted meter replacement device. Background Technology

[0002] As a crucial infrastructure for electricity metering and customer settlement, electricity meters require regular replacement and upgrades based on relevant national standards, service life, and grid status to ensure metering accuracy and operational safety. However, most widely used low-voltage electricity meters currently employ a direct series connection method, necessitating power interruption during replacement. This traditional operating mode faces numerous challenges in practical applications.

[0003] Especially in customer scenarios with rigid demand for continuous power supply, such as industrial and commercial users, medical equipment users, and special aquaculture environments (such as tropical fish tanks), the traditional "planned power outage" meter replacement method is prone to causing user dissatisfaction, affecting the electricity experience, and even causing potential economic losses.

[0004] Traditional meter replacement methods require advance scheduling of power outages with customers and obtaining their confirmation before on-site work can be arranged. The work process includes multiple steps such as power outage, meter removal, replacement, wiring the new meter, and power restoration. If customers cannot cooperate, multiple rounds of communication and coordination are required, resulting in long work cycles, rigid service requirements, and a poor customer experience.

[0006] A statistical analysis of electricity meter replacement customers conducted by Hubei Electric Power Company revealed that approximately 17% of customers proactively inquired about the possibility of meter replacement without power outages, or requested adjustments to the work schedule to avoid peak load periods. This data clearly reflects that customer demand for uninterrupted meter replacement is gradually shifting from potential to explicit, with service requests exhibiting new characteristics such as "unobtrusive," "highly efficient," and "low-interference."

[0007] Faced with rising customer expectations, the traditional "planned power outage" meter replacement process is gradually failing to meet the demands for high reliability and personalized services. Promoting "uninterrupted power outage meter replacement" technology has become an important tool for improving the level of power grid customer service.

[0008] To meet the actual needs of these customers for "uninterrupted meter replacement," on-site personnel typically need to develop customized emergency response plans, using temporary power lines, external power supplies, and other means to maintain continuous power supply to the user. However, this approach is cumbersome, resource-intensive, and inefficient, becoming a significant factor limiting the improvement of the flexibility of power supply services. Summary of the Invention

[0009] The purpose of this invention is to provide a meter replacement device that can replace electricity meters without interrupting power supply, and is characterized by safety, reliability and high efficiency.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is an uninterrupted meter replacement device, characterized by comprising a housing, a panel 9, a cover, a control system, a power output line, a power input line, a power connection line, a relay, an LCD display 3, a meter replacement switch 6, and a power switch 7; one side of the cover is hinged to the upper end of one side of the housing, the panel 9 is fixed to the upper end of the housing, and the control system is installed inside the housing; the panel 9 is equipped with a power input interface 2, a power output interface 5, an LCD display 3, a meter replacement switch 6, a power switch 7, and a single-phase / three-phase meter replacement switch 8; one end of the power input line is connected to a power source, the other end of the power input line is connected to the power input interface 2, one end of the power output line is connected to the power output interface 5, and the other end of the power output line is connected to a miniature circuit breaker on the user side; the power input interface 2 and the power output interface 5 are connected by a power connection line 10, and a relay is provided on the power connection line, which is located inside the housing; the LCD display 3, the meter replacement switch 6, and the single-phase / three-phase meter replacement switch 8 are all connected to the control system.

[0011] The panel 9 is equipped with four voltage input indicator lights 1 and four voltage output indicator lights 4, and the voltage input indicator lights 1 and voltage output indicator lights 4 are all connected to the control system.

[0012] The control system includes a signal acquisition unit, a CPU control unit, and a signal processing and judgment unit. The output terminal of the signal acquisition unit is connected to the input terminal of the CPU control unit. Four input current sensors or four input voltage sensors are installed on the input side of the power supply connection line and are respectively connected to the input terminal of the signal acquisition unit. Four output current sensors or four output voltage sensors are installed on the output side of the power supply connection line and are respectively connected to the input terminal of the signal acquisition unit. The control output terminal of the CPU control unit is connected to the control input terminal of the signal processing and judgment unit, and the control output terminal of the signal processing and judgment unit is connected to a phase relay.

[0013] The beneficial effects of this invention are: 1. Safety Assurance: The operating procedures are standardized, the wiring is highly accurate, and the system has multiple safety protection mechanisms to effectively prevent risks such as short circuits, misconnections, and electric shocks, achieving the safety goal of "zero errors and zero hidden dangers".

[0014] 2. Reliable Power Supply: Power supply remains uninterrupted throughout the meter replacement process. Precise wiring prevents voltage interruptions and equipment restarts caused by misoperation. On average, each meter replacement extends the user's power supply time by 15 minutes, achieving a high-quality power supply service that ensures uninterrupted power availability.

[0015] 3. Efficiency Improvement: The average time for changing meters has been reduced from 15 minutes to 3 minutes, a speed increase of more than 5 times, and the workload has been reduced by 67%, significantly improving work efficiency and operational capabilities.

[0016] 4. Cost optimization: The promotion of uninterrupted meter replacement has significantly increased the proportion of batch operations, and the proportion of users requiring individual appointments has decreased from 20.3% to below 5%. Labor costs are expected to decrease by 30.6%, achieving a double improvement in cost reduction and efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the panel portion of the present invention.

[0018] Figure 2 This is a schematic diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the control system of the present invention.

[0020] Figure 4 This is a schematic diagram illustrating the usage state of the present invention.

[0021] Figure 5 This is a schematic diagram illustrating the workflow of the present invention.

[0022] Figure 6 This is a three-dimensional photograph of the appearance of the uninterrupted power meter replacement device of the present invention.

[0023] Figure 7 This is a photograph of the panel portion of the present invention.

[0024] In the diagram: 1-Voltage input indicator light; 2-Power input interface; 3-LCD display screen; 4-Voltage output indicator light; 5-Power output interface; 6-Meter changer switch; 7-Power switch; 8-Single-phase / three-phase meter changer switch; 9-Panel; 10-Power connection cable. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1 like Figure 1-7As shown, the uninterrupted power meter replacement device includes a housing, a panel 9, a cover, a control system, a power output line, a power input line, a power connection line, a relay, an LCD display 3, a meter replacement switch 6, and a power switch 7. One side of the cover is hinged to the upper part of one side of the housing. The panel 9 is fixed to the upper part of the housing, and the control system is installed inside the housing. The panel 9 is equipped with a power input interface (or voltage input interface, or input terminal, power input socket) 2, a power output interface (or voltage output interface) 5, an LCD display 3, a meter replacement switch 6, a power switch 7, and a single-phase / three-phase meter replacement switch 8. One end of the power cord is connected to the power source (i.e., Figure 4 The power supply to the embedded meter box is connected to the user's electricity meter at one end, and a switch is installed on the power supply line; one end of the power input line is connected to the power source (i.e., Figure 4 The power supply for the embedded meter box is connected to the power input interface 2 at one end, and the power output interface 5 at the other end. Figure 4 The other end of the power output line is connected to the miniature circuit breaker on the user side (i.e., the output terminal is connected to the power output terminal). Figure 4 The power input interface 2 and the power output interface 5 are connected by a power connection cable 10 (the power connection cable is a single-phase and three-phase line, i.e., 4 wires, corresponding to 4 relays, with one relay on each wire, controlled by the control system). The power connection cable is equipped with a relay, and the power connection cable and relay are located inside the box; the LCD display 3, the meter changer switch 6, and the single-phase / three-phase meter changer switch 8 are all connected to the control system (the meter changer switch 6 and the single-phase / three-phase meter changer switch 8 control the opening and closing of the relays through the control system to realize the opening and closing of the power connection cable).

[0027] The panel 9 is equipped with four voltage input indicator lights 1 and four voltage output indicator lights 4. The voltage input indicator lights 1 and the voltage output indicator lights 4 are respectively connected to the control system {the four voltage input indicator lights 1 indicate whether the power switch 7 is turned on, and the four voltage output indicator lights 4 indicate whether the power connection lines (four wires) are connected}.

[0028] The control system includes a signal acquisition unit, a CPU control unit, and a signal processing and judgment unit. The output terminal of the signal acquisition unit is connected to the input terminal of the CPU control unit. Four input current sensors or four input voltage sensors are installed on the input side of the power connection line (i.e., the input side of the relay, indicating whether it is energized) and are respectively connected to the input terminal of the signal acquisition unit. Four output current sensors or four output voltage sensors are installed on the output side of the power connection line (i.e., the output side of the relay) and are respectively connected to the input terminal of the signal acquisition unit. The control output terminal of the CPU control unit is connected to the control input terminal of the signal processing and judgment unit, and the control output terminal of the signal processing and judgment unit is connected to the relay.

[0029] Uninterrupted power supply meter replacement mode: On-site personnel inform customers in advance that the replacement process will not require a power outage and assess and confirm the user's current load. As long as the power load meets the safe operating conditions of the uninterrupted power supply meter replacement device, the work can be arranged. The entire process ensures uninterrupted power supply, smooth equipment switching, and a seamless experience for the customer, significantly improving work efficiency and service satisfaction.

[0030] Work process: 1. One end of the power input line is connected to the power source (i.e., Figure 4 The other end of the power supply line of the embedded meter box is connected to the power input interface of the uninterruptible meter replacement device (i.e., Figure 4 (The input terminal in the middle). 2. One end of the power supply line is connected to the power output interface 5 of the uninterruptible meter changer (i.e., Figure 4 The other end of the power output line is connected to the miniature circuit breaker on the user side (i.e., the output terminal is connected to the power output terminal). Figure 4 User load in the middle); 3. Turn on the power switch 7 and observe the data on the LCD screen 3. If it prompts "Meter Replacement Available", press the meter replacement switch 6 to begin the meter replacement operation (see...). Figure 5 ).

[0031] The main functions of the uninterrupted meter replacement device are: 1. Multiple safety protection mechanisms: Equipped with overcurrent, leakage current, and overvoltage protection circuits, it monitors the operating status in real time and automatically cuts off the power supply in case of any abnormality, ensuring the safety of personnel and equipment.

[0032] 2. Intelligent phase sequence identification and switching judgment: Supports three-phase / single-phase input and output, automatically identifies the incoming phase sequence and the corresponding relationship of the outgoing lines, ensures accurate bypass switching, and avoids the risk of incorrect phase and short circuit.

[0033] 3. Intelligent switching control: The device automatically determines the connection time and intelligently switches the bypass switch to achieve fast and stable power supply channel switching.

[0034] 4. Real-time display of electrical parameters: Supports on-site visualization of key electrical parameters such as voltage, current, and phase angle to assist in operational judgment.

[0035] 5. Accurate power metering: The bypass current is automatically recorded during meter replacement to ensure data continuity and metering integrity.

[0036] 7. Convenient switch power supply connector: Adopting an integrated switch power supply design, it is compatible with mainstream switch structures on the market. Power is available simply by pressing, making operation convenient and efficient. It greatly simplifies the on-site power connection process and improves construction convenience and reliability.

[0037] 6. Full-process data traceability: It can store up to 120 table change records, supporting operation and maintenance traceability and post-evaluation.

Claims

1. A meter replacement device that does not require power outages, characterized in that... The enclosure includes a housing, a panel (9), a cover, a control system, a power output line, a power input line, a power connection line, a relay, an LCD screen (3), a meter changer switch (6), and a power switch (7). One side of the cover is hinged to the upper end of one side of the housing. The panel (9) is fixed to the upper end of the housing. The control system is installed inside the housing. The panel (9) is equipped with a power input interface (2), a power output interface (5), an LCD screen (3), a meter changer switch (6), a power switch (7), and a single-phase / three-phase meter changer switch (8). One end of the power input line is connected to the power supply, and the other end of the power input line is connected to the power input interface (2). One end of the power output line is connected to the power output interface (5), and the other end of the power output line is connected to the miniature circuit breaker on the user side. The power input interface (2) and the power output interface (5) are connected by a power connection line (10). A relay is provided on the power connection line. The power connection line and the relay are located inside the housing. The LCD screen (3), the meter changer switch (6), and the single-phase / three-phase meter changer switch (8) are all connected to the control system.

2. The uninterrupted meter replacement device according to claim 1, characterized in that... The panel (9) is equipped with four voltage input indicator lights (1) and four voltage output indicator lights (4), which are all connected to the control system.

3. The uninterrupted meter replacement device according to claim 1, characterized in that... The control system includes a signal acquisition unit, a CPU control unit, and a signal processing and judgment unit. The output terminal of the signal acquisition unit is connected to the input terminal of the CPU control unit. Four input current sensors or four input voltage sensors are installed on the input side of the power supply connection line and are respectively connected to the input terminal of the signal acquisition unit. Four output current sensors or four output voltage sensors are installed on the output side of the power supply connection line and are respectively connected to the input terminal of the signal acquisition unit. The control output terminal of the CPU control unit is connected to the control input terminal of the signal processing and judgment unit, and the control output terminal of the signal processing and judgment unit is connected to a phase relay.

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