Electric power equipment for inverse irrigation detection and calibration of electric power meter

Abstract

The utility model discloses electric power equipment for inverse irrigation detection and calibration of an electric power meter. The electric power equipment for inverse irrigation detection and calibration of the electric power meter comprises a solar panel, an inverter circuit, an input circuit and a power supply control circuit. The input circuit inputs a calibration setting value. And the power supply control circuit adjusts the alternating-current electric energy output by the inverter circuit according to the calibration set value so as to control the power supply of the mains supply to the load, thereby solving the problem of lighting of the inverse irrigation detection signal lamp of the electric power meter.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electric power equipment, especially a kind of electric power equipment for reverse filling detection calibration of electric power meter. BACKGROUND

[0002] In some countries, in order to meet the regulations for detecting power quality, independent electric power meters need to be installed to detect whether the power quality meets the specifications. However, under the conditions of different characteristic loads, different power qualities and different sensitivity of electric power meters, the internal judgment circuit of the electric power meter often judges that some energy is backfilled to the power supply, causing the reverse filling detection (Reverse) signal light of the electric power meter to turn on, thereby causing a long-term problem that users are troubled by. SUMMARY

[0003] The utility model provides a kind of electric power equipment for reverse filling detection calibration of electric power meter to the technical problems to be solved by the utility model are in view of the deficiencies of prior art.

[0004] One embodiment of the utility model discloses a kind of electric power equipment for reverse filling detection calibration of electric power meter, suitable for being connected to power supply and the electric power meter with reverse filling detection signal light, comprising: a solar panel, which converts solar energy into direct current power;An inverter circuit, electrically coupled to the solar panel, the power supply and a load, converts the direct current power output by the solar panel into alternating current power, and supplies power to the load with the power supply;An input circuit inputs a calibration setting value;And a power control circuit, electrically coupled to the inverter circuit and the input circuit, the power control circuit adjusts the alternating current power output by the inverter circuit according to the calibration setting value, and then controls the power supply to the load.

[0005] Preferably, the electric power equipment for reverse filling detection calibration of electric power meter further comprises a switching circuit, which is electrically coupled to the power control circuit, the inverter circuit, the power supply and the load;The switching circuit includes a first switch and a second switch connected in series, and the first switch and the second switch are selectively turned on according to the control of the power control circuit to transmit at least one of the alternating current power output by the power supply and the alternating current power output by the inverter circuit to the load.

[0006] Preferably, a first sensing circuit is connected between the power control circuit and the inverter circuit, and the first sensing circuit is used to sense the inverter circuit, and the power control circuit obtains the output voltage and output current of the inverter circuit according to the sensing result of the first sensing circuit.

[0007] Preferably, a second sensing circuit is connected between the power control circuit and the solar panel, the second sensing circuit is used to sense the solar panel, and the power control circuit obtains the output voltage and output current of the solar panel according to the sensing result of the second sensing circuit.

[0008] Preferably, a third sensing circuit is connected between the power control circuit and the commercial power, the third sensing circuit is used to sense the commercial power, and the power control circuit obtains the input voltage of the commercial power according to the sensing result of the third sensing circuit.

[0009] Preferably, a fourth sensing circuit is connected between the power control circuit and the load, the fourth sensing circuit is used to sense the load, and the power control circuit obtains the voltage applied to the load according to the sensing result of the fourth sensing circuit.

[0010] Preferably, a boost circuit is connected between the solar panel and the inverter circuit, the boost circuit is used to boost the direct current output by the solar panel and then output.

[0011] Preferably, a charge-discharge conversion circuit is connected between the inverter circuit and a battery pack, the power control circuit is electrically coupled to the charge-discharge conversion circuit, and the power control circuit controls the charging operation and discharging operation of the battery pack through the charge-discharge conversion circuit.

[0012] Preferably, a fifth sensing circuit is connected between the power control circuit and the battery pack, the fifth sensing circuit is used to sense the battery pack, and the power control circuit obtains the voltage and current of the battery pack according to the sensing result generated by the fifth sensing circuit.

[0013] Preferably, the power equipment for reverse power detection calibration of a power meter further comprises an operation panel, the operation panel is provided with a display screen and the input circuit, when the reverse power detection signal light of the power meter connected between the commercial power and a power supply path of the load is on, the power control circuit receives and stores the calibration setting value input by the input circuit each time, and then gradually reduces the alternating current output by the inverter circuit, so that the commercial power correspondingly increases the power supply to the load, the power control circuit is electrically coupled to the display screen, and the display screen displays a reverse power calibration setting item page containing the calibration setting value.

[0014] For further understanding of the features and technical contents of the present application, please refer to the following detailed description and drawings of the present application. However, the above description and drawings are only used to illustrate the present application, and do not limit the protection scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1The block diagram of the power equipment for reverse filling detection and calibration of the electric power meter is used for an embodiment of the utility model.

[0016] Figure 2 The block diagram of the power equipment for reverse filling detection and calibration of the electric power meter is used for another embodiment of the utility model.

[0017] Figure 3 The block diagram of the power equipment for reverse filling detection and calibration of the electric power meter is used for another embodiment of the utility model.

[0018] Figure 4 The machine body appearance diagram of the power equipment for reverse filling detection and calibration of the electric power meter is used for an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following is to illustrate the embodiment of the utility model for "power equipment for reverse filling detection and calibration of the electric power meter" through specific embodiments, and the advantages and effects of the utility model can be understood by the person skilled in the art from the disclosed content of the specification. The utility model can be implemented or applied through other different embodiments, and each detail in the specification can be modified and changed based on different viewpoints and applications without departing from the concept of the utility model. In addition, the drawings of the utility model are only simple schematic illustrations, not the actual size description, and the prior declaration is declared. The following embodiments will further illustrate the related technical content of the utility model, but the disclosed content is not used to limit the protection scope of the utility model.

[0020] It should be understood that although the terms "first", "second", "third" and the like can be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein can include any combination of one or more associated listed items.

[0021] [EMBODIMENT]

[0022] Figure 1 The block diagram of the power equipment for reverse filling detection and calibration of the electric power meter is used for an embodiment of the utility model. Please refer to Figure 1A power device (hereinafter referred to as power device 1) for reverse power flow detection calibration of a power meter (hereinafter referred to as power meter M1) is adapted to be connected to a power supply E1 and has a reverse power flow detection signal lamp M11. In practice, the power meter M1 is implemented by, for example, a mechanical meter, an electronic meter, a three-phase mechanical meter, a three-phase electronic meter, or a smart meter. In this embodiment, the power meter M1 measures the power, current, voltage, and current direction of the power supply E1 through its own detection circuit to determine whether there is reverse power flow to the power supply E1, and when there is a little energy backflow to the power supply E1, the reverse power flow detection signal lamp M11 of the power meter M1 will light up. Moreover, the power meter M1 of this embodiment is a stand-alone device and does not have any external communication lines to communicate with external devices.

[0023] In one technical form of this embodiment, the power device 1 can include a switching circuit R, a solar panel 10, an inverter circuit 20, a power control circuit 30, and an input circuit 40.

[0024] The solar panel 10 converts solar energy into direct current energy. In practice, the solar panel 10 is implemented by, for example, one or a combination of a receiving panel, a controller, and an accumulator. The receiving panel is used to receive light energy, the accumulator is used to convert light energy into electrical energy, and the controller controls the electrical energy output by the accumulator through maximum power tracking, which detects the time period or angle with the maximum power under sunlight. The form of the solar panel 10 is not limited in this embodiment.

[0025] The inverter circuit 20 is electrically coupled to the solar panel 10, the power supply E1, and the load L1. The inverter circuit 20 inverts the direct current energy output by the solar panel 10 into alternating current energy and supplies power to the load L1 together with the power supply E1. In practice, the inverter circuit 20 is implemented by, for example, a grid-connected inverter, a full-bridge inverter, or a half-bridge inverter. Since the solar panel 10 converts solar energy into direct current energy, the inverter circuit 20 is needed to convert the direct current energy generated by the solar panel 10 into alternating current energy and supply the converted alternating current energy to the load L1. The form of the inverter circuit 20 is not limited in this embodiment.

[0026] The power control circuit 30 is electrically coupled to the inverter circuit 20. The power control circuit 30 controls the operation of the inverter circuit 20. Further, the power control circuit 30 controls the inverter circuit 20 to invert the direct current energy output by the solar panel 10 into alternating current energy for the load L1, so that the inverter circuit 20 is controlled by the power control circuit 30 to supply alternating current energy to the load L1.

[0027] The power control circuit 30 is electrically coupled to the switching circuit R, and the inverter circuit 20 is electrically coupled to the commercial power E1 and the load L1 through the switching circuit R. Further, the switching circuit R includes a first switch R1 and a second switch R2 connected in series. The first switch R1 and the second switch R2 are selectively turned on according to the control of the power control circuit 30, so as to transmit at least one of the AC power output by the commercial power E1 and the AC power output by the inverter circuit 20 to the load L1. For example, the power control circuit 30 can control the first switch R1 and the second switch R2 to be turned on, so as to transmit the AC power output by the commercial power E1 and the AC power output by the inverter circuit 20 to the load L1. In addition, the power control circuit 30 can control the first switch R1 to be turned off and the second switch R2 to be turned on, so as to transmit the AC power output by the inverter circuit 20 to the load L1. In practice, the first switch R1 and the second switch R2 can be relays, respectively. The present embodiment does not limit the form of the switching circuit R.

[0028] The input circuit 40 is electrically coupled to the power control circuit 30. The input circuit 40 inputs a calibration setting value, and the power control circuit 30 receives the calibration setting value input by the input circuit 40.

[0029] In other embodiments, the power control circuit 30 receives and stores the calibration setting value. Further, when the reverse feed detection signal lamp M11 of the power meter M1 is on, the power control circuit 30 receives and stores the calibration setting value input by the input circuit 40. According to the stored calibration setting value, the power control circuit 30 adjusts the AC power output by the inverter circuit 20 to the load L1 from the DC power output by the solar panel 10, so as to adjust the AC power output by the commercial power E1 to the load L1, to avoid a little solar energy from being fed back to the commercial power E1. Moreover, when the reverse feed detection signal lamp M11 of the power meter M1 is still on, the power control circuit 30 receives and stores the next calibration setting value input by the input circuit 40. That is, when the reverse feed detection signal lamp M11 of the power meter M1 connected between the power supply path P1 of the commercial power E1 to the load L1 is on, the power control circuit 30 can receive and store the calibration setting value input by the input circuit 40 each time, and gradually adjust the AC power output by the inverter circuit 20, so as to increase the power supply from the commercial power to the load L1.

[0030] For example, when the reverse power supply detection indicator M11 of the power meter M1 is lit, the power control circuit 30 receives and stores the calibration setting value (e.g., 100) input from the input circuit 40. Based on the stored calibration setting value, the power control circuit 30 adjusts the inverter circuit 20 to convert the DC power output from the solar panel 10 to the AC power of the load L1, for example, reducing the average power delivered to the load by approximately 100W. The shortfall of 100W is then compensated by the mains power E1, thus resolving the reverse power supply problem. If the reverse power supply detection indicator M11 of the power meter M1 is still lit at this time... When the light turns on, the power control circuit 30 receives and stores the next calibration setting value (e.g., 110) input from the input circuit 40. In other words, the power control circuit 30 adjusts the calibration setting value upwards to reduce the average power transmitted to the load by another 10W, resulting in a total reduction of approximately 110W in the average power transmitted to the load, with an upper limit of 300W. This adjustment is gradually made until the reverse flow detection signal light M11 of the power meter M1 turns off. Each adjustment of the calibration setting value is stored, so each time an input is made, the calibration setting value seen will be the previously stored calibration setting value.

[0031] Thus, the power control circuit 30 of the power equipment 1 of this utility model receives the calibration setting value input by the input circuit 40, and the power control circuit 30 adjusts the AC power output of the inverter circuit 20 according to the calibration setting value, thereby controlling the power supply of the mains power E1 to the load L1, so that the mains power E1 can provide more energy, so as to avoid some solar energy flowing back to the mains power E1, and solve the problem that the power meter M1 will self-detect abnormalities and light up under different load characteristics, different power quality and different sensitivity conditions.

[0032] In this embodiment, the input circuit 40 may be implemented as, but is not limited to, an input interface, an input panel, or input function keys, which can be operated by a user or operator.

[0033] Figure 2 This is a block diagram of a power equipment used for reverse-current detection and calibration of electricity meters, according to another embodiment of this utility model. Please refer to [link / reference]. Figure 2 .in Figure 2 Zhongyu Figure 1 The electrical equipment 1b and 1 are similar, and the same components included in them will be referred to by the same reference numerals below. The differences between electrical equipment 1b and 1 are explained below.

[0034] A first sensing circuit S1 is connected between the power control circuit 30 and the inverter circuit 20. The first sensing circuit S1, for example, is a voltage / current sensing circuit, which is used to sense the inverter circuit 20. The power control circuit 30 can obtain the invertor output voltage and the invertor output current according to the sensing result of the first sensing circuit S1 through an internal analog-digital conversion (ADC) sub-circuit, that is, digitizing the sensing result. The first sensing circuit S1 is, for example, disposed inside or outside the power control circuit 30 or inside or outside the inverter circuit 20, which is not limited.

[0035] A second sensing circuit S2 is connected between the power control circuit 30 and the solar panel 10. The second sensing circuit S2, for example, is a voltage / current sensing circuit, which is used to sense the solar panel 10. The power control circuit 30 can obtain the PV output voltage and the PV output current according to the sensing result of the second sensing circuit S2 through an internal analog-digital conversion sub-circuit. The second sensing circuit S2 is, for example, disposed inside or outside the power control circuit 30 or inside or outside the solar panel 10, which is not limited.

[0036] A third sensing circuit S3 is connected between the power control circuit 30 and the commercial power E1. The third sensing circuit S3, for example, is a voltage sensing circuit, which is used to sense the commercial power E1. The power control circuit 30 can obtain the AC input voltage according to the sensing result of the third sensing circuit S3 through an internal analog-digital conversion sub-circuit. The third sensing circuit S3 is, for example, disposed inside or outside the power control circuit 30 or outside the commercial power E1, which is not limited.

[0037] A fourth sensing circuit S4 is connected between the power control circuit 30 and the load L1. The fourth sensing circuit S4, for example, is a voltage sensing circuit, which is used to sense the load L1. The power control circuit 30 can obtain the voltage of the load L1 according to the sensing result of the fourth sensing circuit S4 through an internal analog-digital conversion sub-circuit. The fourth sensing circuit S4 is, for example, disposed inside or outside the power control circuit 30 or inside or outside the load L1, which is not limited.

[0038] Figure 3 A block diagram of the power equipment for reverse filling detection and calibration of the electric power meter is used for another embodiment of the utility model. Please refer to Figure 3 . Among them Figure 3 in which Figure 2The power device 1c and 1b are similar in the power device 1c, 1b, and the same components included in the power device 1c, 1b will be described below with the same reference numerals. The differences between the power device 1c and 1b are described as follows.

[0039] A boost circuit 50 is connected between the solar panel 10 and the inverter circuit 20. The boost circuit 50 boosts the direct current power outputted from the solar panel 10 and outputs the boosted direct current power, so that the boosted direct current power is inverted by the inverter circuit 20 to supply the load L1.

[0040] A charge-discharge conversion circuit 60 is connected between the inverter circuit 20 and a battery pack B1, and the power control circuit 30 is electrically coupled to the charge-discharge conversion circuit 60. The power control circuit 30 controls the charging operation and the discharging operation of the battery pack B1 through the charge-discharge conversion circuit 60. That is, the power control circuit 30 controls the charging operation or the discharging operation of the charge-discharge conversion circuit 60 and the battery pack B1. Further, the power control circuit 30 can control the on or off of the switch in the charge-discharge conversion circuit 60, so that the power can flow bidirectionally. For example, the power flows through the charge-discharge conversion circuit 60 and then flows to the battery pack B1, or the power flows from the battery pack B1 through the charge-discharge conversion circuit 60 and then flows to the inverter circuit 20. Moreover, when the solar power cannot meet the operation of the inverter circuit 20, and the battery pack B1 meets the discharging condition, the battery power of the battery pack B1 is converted into direct current power by the charge-discharge conversion circuit 60, so that the direct current power is inverted by the inverter circuit 20 to supply to the load L1. Further, a fifth sensing circuit S5 is connected between the power control circuit 30 and the battery pack B1. The fifth sensing circuit S5, for example, is a voltage / current sensing circuit, which is used to sense the battery pack B1. The power control circuit 30 can obtain the voltage and the current of the battery pack B1 through the internal analog-digital conversion sub-circuit according to the sensing result generated by the fifth sensing circuit S5. The fifth sensing circuit S5 is not limited to be arranged inside or outside the power control circuit 30 or inside or outside the battery pack B1.

[0041] The power control circuit 30 is electrically coupled to a display screen 70. The display screen 70, for example, is a liquid crystal display screen (LCD), and the display screen 70 displays an inverse filling calibration setting item page 71.

[0042] Figure 4 It is an embodiment of the utility model for the appearance of the body of the power device for the inverse filling detection and calibration of the power meter. Please refer to Figure 4 . The power device 1 further includes an operation panel 80. The operation panel 80 can be arranged on a body A1 of the power device 1. Moreover, the operation panel 80 is arranged with the display screen 70 and the input circuit 40, and the display screen 70 displays the inverse filling calibration setting item page 71 including the calibration setting value (for example, 100).

[0043] In summary, the input circuit of the power device is provided with the input calibration setting value, and the power supply control circuit adjusts the alternating current energy output by the inverter circuit according to the calibration setting value, and then controls the power supply of the commercial power to the load, so that the commercial power can provide some energy when the reverse filling detection signal light of the power meter is on, to avoid some solar energy from being backfilled to the commercial power, and to solve the problem that the power meter detects an abnormality and the light is on under the condition of different characteristic loads, different power qualities and different sensitivities of the power meter.

[0044] The above disclosed content is only the preferred and feasible embodiment of the utility model, and does not limit the patent range of the utility model, so that any equivalent technical change applied to the utility model specification and drawing content is included in the patent range of the utility model.

Claims

1. A power device for reverse feed detection calibration of an electric power meter, suitable for connection to a power supply and having a reverse feed detection signal light, characterized in that, The application relates to a power supply device, comprising: a solar panel for converting solar energy into direct-current power; an inverter circuit electrically connected to the solar panel, a commercial power supply and a load, for inverting the direct-current power output by the solar panel into alternating-current power and supplying the alternating-current power to the load together with the commercial power supply; an input circuit for inputting a calibration setting value; and a power supply control circuit electrically connected to the inverter circuit and the input circuit, for adjusting the alternating-current power output by the inverter circuit according to the calibration setting value and controlling the supply of the commercial power supply to the load.

2. The power device for backfeed detection calibration of an electric power meter according to claim 1, wherein, The power supply device further comprises a switching circuit electrically connected to the power supply control circuit, the inverter circuit, the commercial power supply and the load, wherein the switching circuit comprises a first switch and a second switch connected in series, and the first switch and the second switch are selectively turned on according to the control of the power supply control circuit, so as to transmit at least one of the alternating-current power output by the commercial power supply and the alternating-current power output by the inverter circuit to the load.

3. The power device for backfeed detection calibration of an electric power meter according to claim 1, wherein, A first sensing circuit is connected between the power supply control circuit and the inverter circuit, for sensing the inverter circuit, and the power supply control circuit obtains the output voltage and output current of the inverter circuit according to the sensing result of the first sensing circuit.

4. The power device for backfeed detection calibration of an electric power meter according to claim 3, wherein, A second sensing circuit is connected between the power supply control circuit and the solar panel, for sensing the solar panel, and the power supply control circuit obtains the output voltage and output current of the solar panel according to the sensing result of the second sensing circuit.

5. The power device for backfeed detection calibration of an electric power meter according to claim 4, wherein, A third sensing circuit is connected between the power supply control circuit and the commercial power supply, for sensing the commercial power supply, and the power supply control circuit obtains the input voltage of the commercial power supply according to the sensing result of the third sensing circuit.

6. The power device for backfeed detection calibration of an electric power meter according to claim 5, wherein, A fourth sensing circuit is connected between the power supply control circuit and the load, for sensing the load, and the power supply control circuit obtains the voltage applied to the load according to the sensing result of the fourth sensing circuit.

7. The power device for backfeed detection calibration of an electric power meter of claim 1, wherein, A voltage-boosting circuit is connected between the solar panel and the inverter circuit, for boosting the direct-current power output by the solar panel.

8. The power device for backfeed detection calibration of an electric power meter of claim 1, wherein, A charge-discharge conversion circuit is connected between the inverter circuit and a battery pack, the power supply control circuit is electrically connected to the charge-discharge conversion circuit, and the power supply control circuit controls the charging operation and discharging operation of the battery pack through the charge-discharge conversion circuit.

9. The power device for backfeed detection calibration of an electric power meter according to claim 8, wherein, A fifth sensing circuit is connected between the power supply control circuit and the battery pack, for sensing the battery pack, and the power supply control circuit obtains the voltage and current of the battery pack according to the sensing result generated by the fifth sensing circuit.

10. The power device for backfeed detection calibration of an electric power meter of claim 1, wherein, The operation panel is provided with a display screen and the input circuit, when the back-feeding detection signal light of the power meter connected between the power supply path of the commercial power to the load is on, the power control circuit receives the calibration setting value input by the input circuit each time and stores, and gradually reduces the AC power output by the inverter circuit according to the calibration setting value, so that the commercial power corresponding increases the power supply to the load, the power control circuit is electrically connected to the display screen, and the display screen displays an inverse filling calibration setting item page containing the calibration setting value.

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