Three-phase intelligent auxiliary device for changing meter without power cut

Abstract

The utility model discloses a three-phase intelligent auxiliary device for changing a meter without power cut, which comprises a master controller, a power supply switching relay, a phase detector, an electric energy meter and an air switch clamp sleeve wire, the main controller is electrically connected with the control end of the power supply switching relay and the control end of the air switch clamp sleeve wire, the power supply switching relay is provided with a three-phase voltage input end and a three-phase voltage output end, the three-phase voltage input end is used for being connected with a power grid side phase wire, and the three-phase voltage output end is electrically connected with the air switch clamp sleeve wire; the first input end of the phase detector is electrically connected with the three-phase voltage input end, the second input end of the phase detector is electrically connected with the three-phase voltage output end, and the electric energy meter is electrically connected with the three-phase voltage output end; the master controller is in communication connection with the phase detector and the electric energy meter. According to the utility model, power-off-free meter replacement is realized, and the work efficiency and user experience of replacement work of the three-phase electric energy metering device are improved.

Description

Technical Field

[0001] The utility model relates to the field of electric power equipment, in particular to a three-phase non-stop power meter replacement intelligent auxiliary device. Background Art

[0002] In recent years, people's demand for electricity has become higher and higher, and the requirements for electricity experience have become higher and higher. The requirements for power supply reliability have also increased with the continuous improvement of the quality of life. The replacement of three-phase power metering devices will inevitably cause power outages in the back-end user lines. The complex environment and work items of the construction site will directly affect the duration of power outages for users on site.

[0003] There are two main problems with the current method of replacing electricity meters:

[0004] 1. The replacement of the meter causes power loss to the user. During the replacement period of the three-phase energy meter, the user will have no power available, the user's equipment will be damaged, and other problems will occur, thus reducing the service quality.

[0005] 2. Low efficiency of meter replacement. Before replacing a three-phase energy meter, the user needs to be notified, which consumes a lot of manpower and material resources and has low work efficiency.

[0006] Therefore, how to replace the electric meter without affecting the service quality and work efficiency has become an urgent problem to be solved. Utility Model Content

[0007] The technical problem to be solved by the utility model is: to propose a three-phase non-stop power meter replacement intelligent auxiliary device to improve the work efficiency and user experience of the replacement work of the three-phase electric energy metering device.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A three-phase non-stop power meter replacement intelligent auxiliary device, comprising a main controller, a power supply switching relay, a phase detector, an electric energy meter and a circuit breaker fixture sleeve wire;

[0010] The main controller is electrically connected to the control end of the power supply switching relay and the control end of the circuit breaker fixture sheath wire respectively, the power supply switching relay has a three-phase voltage input end and a three-phase voltage output end, the three-phase voltage input end is used to connect the grid side phase line, and the three-phase voltage output end is electrically connected to the circuit breaker fixture sheath wire;

[0011] The first input terminal of the phase detector is electrically connected to the three-phase voltage input terminal, the second input terminal of the phase detector is electrically connected to the three-phase voltage output terminal, and the electric energy meter is electrically connected to the three-phase voltage output terminal;

[0012] The main controller is communicatively connected with the phase detector and the electric energy meter respectively.

[0013] Furthermore, it also includes a power supply component, the AC input end of the power supply component is electrically connected to the three-phase voltage input end, and the DC output end of the power supply component is electrically connected to the main controller.

[0014] Furthermore, the power supply assembly includes a switching power supply, an energy storage battery and a power processing module;

[0015] The AC side of the switching power supply is electrically connected to the grid-side phase line, the DC side of the switching power supply is electrically connected to the input end of the energy storage battery, and the output end of the energy storage battery is electrically connected to the main controller through the power processing module.

[0016] Furthermore, it also includes a reserved charging module, which is electrically connected to the input end of the energy storage battery.

[0017] Furthermore, it also includes a display screen, which is electrically connected to the main controller.

[0018] Furthermore, the main controller is provided with a meter reading communication port.

[0019] Furthermore, it also includes a voice player, which is electrically connected to the main controller.

[0020] Furthermore, the three-phase voltage input terminal is provided with four alligator clips corresponding one-to-one to the phase lines on the grid side, and the colors of all the alligator clips are different.

[0021] Furthermore, the main controller is provided with at least two external communication ports.

[0022] Furthermore, a leakage detection magnetic ring is provided on the three-phase voltage input terminal.

[0023] The beneficial effects of the utility model are: proposing a three-phase non-stop power meter replacement intelligent auxiliary device, using a power supply branch with a power supply switching relay and a circuit breaker clamp as main components to connect the grid side phase line and the user side phase line, replacing the power supply line where the old meter is located, and controlling the power supply switching relay to close the action through a phase detector. After the power supply line is switched, the old meter is removed, and at the same time, the user's power loss during the meter replacement process is counted by an electric energy meter, so as to realize meter replacement without power outages and avoid power outage losses to users. It can also assist in completing electric energy statistics, thereby improving the work efficiency and user experience of replacing three-phase electric energy metering devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the internal composition of a three-phase non-stop power meter replacement intelligent auxiliary device involved in the utility model;

[0025] Figure 2 The utility model discloses a wiring diagram of a three-phase non-stop meter replacement intelligent auxiliary device when the device is used for meter replacement.

[0026] Description of labels:

[0027] B1. Energy storage battery;

[0028] J1, switch power supply; J2, circuit breaker clamp wire;

[0029] K. Power supply switching relay;

[0030] QF1, home air switch;

[0031] P. External communication port;

[0032] T1, voice player; T2, relay controller; TA1, leakage detection magnetic ring;

[0033] U1, main controller; U2, phase detector; U3, power meter; U4, power processing module; U5, reserved charging module; U6, display screen;

[0034] Z1. Old electric meter. DETAILED DESCRIPTION

[0035] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0036] Please refer to Figure 1 and Figure 2 , a three-phase non-stop power meter replacement intelligent auxiliary device, including a main controller U1, a power supply switching relay K, a phase detector U2, an electric energy meter U3 and a circuit breaker fixture sleeve wire J2;

[0037] The main controller U1 is electrically connected to the control end of the power supply switching relay K and the control end of the circuit breaker fixture set line J2 respectively. The power supply switching relay K has a three-phase voltage input end and a three-phase voltage output end. The three-phase voltage input end is used to connect the grid side phase line, and the three-phase voltage output end is electrically connected to the circuit breaker fixture set line J2.

[0038] The first input terminal of the phase detector U2 is electrically connected to the three-phase voltage input terminal, the second input terminal of the phase detector U2 is electrically connected to the three-phase voltage output terminal, and the electric energy meter U3 is electrically connected to the three-phase voltage output terminal;

[0039] The main controller U1 is communicatively connected with the phase detector U2 and the electric energy meter U3 respectively.

[0040] From the above description, it can be seen that the beneficial effects of the utility model are: proposing a three-phase non-stop power meter replacement intelligent auxiliary device, using a power supply branch with a power supply switching relay K and a circuit breaker clamp sleeve line J2 as main components to connect the grid side phase line and the user side phase line, replacing the power supply line where the old meter Z1 is located, and controlling the power supply switching relay K to close the action through the phase detector U2. After the power supply line is switched, the old meter Z1 is removed, and at the same time, the power meter U3 is used to count the user's power loss during the meter replacement process, so as to realize non-stop power meter replacement and avoid power outage losses to users. It can also assist in completing power statistics, thereby improving the work efficiency and user experience of replacing three-phase power metering devices.

[0041] Furthermore, it also includes a power supply component, the AC input end of the power supply component is electrically connected to the three-phase voltage input end, and the DC output end of the power supply component is electrically connected to the main controller U1.

[0042] From the above description, it can be seen that a power supply component that can be connected to the phase line on the grid side is provided to provide power for the operation of components such as the main controller U1 and improve the convenience of using the device.

[0043] Furthermore, the power supply assembly includes a switching power supply J1, an energy storage battery B1 and a power processing module U4;

[0044] The AC side of the switching power supply J1 is electrically connected to the grid-side phase line, the DC side of the switching power supply J1 is electrically connected to the input end of the energy storage battery B1, and the output end of the energy storage battery B1 is electrically connected to the main controller U1 through the power processing module U4.

[0045] From the above description, it can be seen that in addition to obtaining electrical energy from the power grid through the switching power supply J1, the device is also equipped with an energy storage battery B1, which can maintain normal operation of the device when the external power supply is disconnected, improve power supply reliability, and extend the effective working time of the device.

[0046] Furthermore, it also includes a reserved charging module U5, and the reserved charging module U5 is electrically connected to the input end of the energy storage battery B1.

[0047] From the above description, it can be seen that the reserved charging module U5 is set to cooperate with the energy storage battery B1. During the idle time when the device is not used for meter replacement operations, the device can be pre-charged through the reserved charging module U5 without the need to draw power at the operation site.

[0048] Furthermore, it also includes a display screen U6, and the display screen U6 is electrically connected to the main controller U1.

[0049] From the above description, it can be seen that by setting up the display screen U6, it can be used to display data such as the status of the power supply switching relay K, the sampling results of the phase detector U2, and the sampling results of the electric energy meter U3, so as to help the operating personnel intuitively understand the operating status of the device, so that the operating personnel can make corresponding processing according to the actual situation.

[0050] Furthermore, the main controller U1 is provided with a meter reading communication port.

[0051] From the above description, it can be seen that the main controller U1 is provided with a meter reading communication port, which can be used to communicate with the old meter Z1, so as to read the data on the old meter Z1, complete the meter reading, and provide assistance for the operator to quickly complete the meter replacement operation.

[0052] Furthermore, it also includes a voice player T1, and the voice player T1 is electrically connected to the main controller U1.

[0053] From the above description, it can be seen that by setting a voice player T1 on the device, voice feedback can be provided to the operator for abnormal conditions such as phase line voltage and working processes such as relay closure, making the use of the device more intelligent and convenient.

[0054] Furthermore, the three-phase voltage input terminal is provided with four alligator clips corresponding one-to-one to the phase lines on the grid side, and the colors of all the alligator clips are different.

[0055] From the above description, it can be seen that by setting alligator clips of different colors, the problems of wrong wiring and missing wiring can be effectively solved, thereby improving work quality and efficiency.

[0056] Furthermore, the main controller U1 is provided with at least two external communication ports P.

[0057] From the above description, it can be seen that the main controller U1 is provided with multiple external communication ports P, so as to facilitate access to other devices such as PC according to actual use requirements, which can be used to realize functions such as meter reading data transmission and detection data backup, thereby improving the practicality of the device.

[0058] Furthermore, a leakage detection magnetic ring TA1 is provided on the three-phase voltage input terminal.

[0059] From the above description, it can be seen that a leakage detection magnetic ring TA1 is provided on the three-phase voltage input terminal of the power supply switching relay K to protect the circuit or electrical equipment from short circuit, severe overload and undervoltage, thereby ensuring power supply safety.

[0060] Please refer to Figure 1 and Figure 2 , Embodiment 1 of the present utility model is:

[0061] A three-phase non-stop power meter changing intelligent auxiliary device comprises a main controller U1, a power supply switching relay K, a phase detector U2, a display screen U6, an electric energy meter U3 and an air switch fixture cable J2; the main controller U1 is electrically connected to the control end of the power supply switching relay K and the control end of the air switch fixture cable J2 respectively, the power supply switching relay K has a three-phase voltage input end and a three-phase voltage output end, the three-phase voltage input end is used to connect the grid side phase line, and the three-phase voltage output end is electrically connected to the air switch fixture cable J2; the first input end of the phase detector U2 is electrically connected to the three-phase voltage input end, the second input end of the phase detector U2 is electrically connected to the three-phase voltage output end, and the electric energy meter U3 is electrically connected to the three-phase voltage output end; the main controller U1 is communicatively connected to the phase detector U2 and the electric energy meter U3 respectively, and the display screen U6 is electrically connected to the main controller U1.

[0062] In order to facilitate understanding of the content of this embodiment, some of the above-mentioned components are described as follows:

[0063] Open the clamp sleeve line J2: Figure 2 As shown, it consists of 1 circuit breaker fixture, 4*8AWG SJOW rubber wire and M25 self-locking 4-core male jack, with a rated current of 60A and a rated voltage of 500V. It consists of 4*22AWG black PVC wire with aluminum foil and Mini quick-locking 4-core male jack, with a rated current of 5A and a rated voltage of 60V. When in use, the circuit breaker fixture wire J2 is set on the household air switch QF1 on the user side. The circuit breaker fixture wire J2 is responsible for connecting the grid voltage connected to the power supply switching relay K to the user side; when it is used, the household air switch QF1 on the user side that was originally connected to the old meter Z1 can be disconnected.

[0064] Phase detector U2 and energy meter U3: The chips inside both are ADI's ADE9078ACPZ; this metering chip integrates 7 high-performance ADCs and 1 flexible DSP core. The VA, VB, and VC channels of phase detector U2 are the 19 / 20, 21 / 22, and 23 / 24 input pins of the corresponding chip. The IA, IB, and IC channels of energy meter U3 are the 7 / 8, 9 / 10, and 11 / 12 input pins of the corresponding chip.

[0065] In this embodiment, the use process of a three-phase non-stop power meter replacement intelligent auxiliary device is as follows:

[0066] First, connect the three-phase voltage input terminal of the power supply switching relay K to the phase line on the grid side, and set the air switch clamp wire set J2 on the household air switch QF1 on the user side; specifically, use the input voltage line on the three-phase voltage input terminal. The input voltage line consists of 4 75mm all-inclusive crocodile clips, 4*8AWG SJOW rubber wires and M25 self-locking 4-core jack male plugs, with a rated current of 60A and a rated voltage of 500V. In order to avoid missing or wrong wires, the crocodile clips of the input voltage line are divided into yellow, green, red and black. The three colors of yellow, green and red correspond to the VA, VB, and VC channels of the phase detector U2 respectively. When the three-phase electricity is connected, the yellow, green and red crocodile clips do not distinguish between phases and can be connected in any order. The corresponding position adjustment is made according to the device prompts later.

[0067] Secondly, the grid-side voltage phases collected by the first input terminal and the second input terminal of the phase detector U2 are compared with the user-side voltage phase sequence on the display screen U6. When the phase sequences are the same, the power supply switching relay K is controlled to close, and the household air switch QF1 on the user side is disconnected; wherein, corresponding to the A, B, C and N phase lines of the power grid, there are four power supply switching relays K, namely K1, K2, K3 and K4, and four relay controllers T2 can be correspondingly set on the main controller U1, thereby controlling the corresponding power supply switching relays K to close.

[0068] Then, the meter replacement operation is started, and the power consumption on the user side is obtained by using the power meter U3; wherein, the main controller U1 communicates with the old power meter Z1 through the meter reading communication port to obtain the data on the old power meter Z1; in addition, the main controller U1 is provided with at least two external communication ports P, as shown in FIG. Figure 1 The types of P1, P2 and P3 shown in the figure can be selected as USB, RS485, serial port, etc. The operator can back up the meter reading data by inserting a U disk into the USB interface.

[0069] Finally, after the meter is replaced, close the household air switch QF1, and remove the input voltage line and the air switch fixture wire J2.

[0070] In this embodiment, the main controller U1 is also provided with a voice player T1, which can perform abnormal alarms and process prompts.

[0071] Please refer to Figure 1 , Embodiment 2 of the present utility model is:

[0072] A three-phase non-stop power meter replacement intelligent auxiliary device, based on the above embodiment 1, further includes a power supply component, the power supply component includes a switching power supply J1, an energy storage battery B1, a reserved charging module U5 and a power processing module U4; the AC side of the switching power supply J1 is electrically connected to the phase line on the grid side, the DC side of the switching power supply J1 is electrically connected to the input end of the energy storage battery B1, and the output end of the energy storage battery B1 is electrically connected to the main controller U1 through the power processing module U4. The reserved charging module U5 is electrically connected to the input end of the energy storage battery B1.

[0073] To sum up, the utility model provides a three-phase non-stop power meter replacement intelligent auxiliary device, which uses a power supply branch with a power supply switching relay and a circuit breaker clamp as main components to connect the grid side phase line and the user side phase line, replacing the power supply line where the old meter is located, and controls the power supply switching relay to close through a phase detector. After the power supply line is switched, the old meter is removed, and at the same time, the user's power loss during the meter replacement process is counted by the electric energy meter, so as to realize meter replacement without power outages and avoid power outage losses to users. It can also assist in completing electric energy statistics, thereby improving the work efficiency and user experience of replacing three-phase electric energy metering devices.

[0074] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A three-phase non-stop power meter replacement intelligent auxiliary device, characterized in that: It includes a main controller, a power supply switching relay, a phase detector, an electric energy meter, and a circuit breaker fixture sleeve wire; The main controller is electrically connected to the control end of the power supply switching relay and the control end of the circuit breaker fixture sheath wire respectively, the power supply switching relay has a three-phase voltage input end and a three-phase voltage output end, the three-phase voltage input end is used to connect the grid side phase line, and the three-phase voltage output end is electrically connected to the circuit breaker fixture sheath wire; The first input terminal of the phase detector is electrically connected to the three-phase voltage input terminal, the second input terminal of the phase detector is electrically connected to the three-phase voltage output terminal, and the electric energy meter is electrically connected to the three-phase voltage output terminal; The main controller is communicatively connected with the phase detector and the electric energy meter respectively.

2. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 1 is characterized in that: It also includes a power supply component, the AC input end of the power supply component is electrically connected to the three-phase voltage input end, and the DC output end of the power supply component is electrically connected to the main controller.

3. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 2 is characterized in that: The power supply assembly includes a switching power supply, an energy storage battery and a power processing module; The AC side of the switching power supply is electrically connected to the grid-side phase line, the DC side of the switching power supply is electrically connected to the input end of the energy storage battery, and the output end of the energy storage battery is electrically connected to the main controller through the power processing module.

4. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 3 is characterized in that: It also includes a reserved charging module, which is electrically connected to the input end of the energy storage battery.

5. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 1 is characterized in that: It also includes a display screen, which is electrically connected to the main controller.

6. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 1, characterized in that: The main controller is provided with a meter reading communication port.

7. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 1 is characterized in that: It also includes a voice player, which is electrically connected to the main controller.

8. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 1 is characterized in that: The three-phase voltage input terminal is provided with four alligator clips corresponding to the grid-side phase lines one by one, and the colors of all the alligator clips are different.

9. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 1, characterized in that: The main controller is provided with at least two external communication ports.

10. The three-phase non-stop power meter replacement intelligent auxiliary device according to claim 1, characterized in that: The three-phase voltage input terminal is provided with a leakage detection magnetic ring.

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