CN111308407A - A wrong termination for electric energy measurement - Google Patents
A wrong termination for electric energy measurement Download PDFInfo
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- CN111308407A CN111308407A CN201911066521.6A CN201911066521A CN111308407A CN 111308407 A CN111308407 A CN 111308407A CN 201911066521 A CN201911066521 A CN 201911066521A CN 111308407 A CN111308407 A CN 111308407A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
Abstract
The application discloses wrong termination for electric energy measurement includes: the device comprises a voltage adjusting module and a current adjusting module; the input end of the voltage adjusting module is used for inputting phase voltage, the output end of the voltage adjusting module is used for connecting the electric energy metering device, and the voltage adjusting module is used for adjusting the phase voltage to a preset voltage value; the input end of the current adjusting module is used for inputting phase voltage, the output end of the current adjusting module is used for connecting the input end of the electric energy metering device, and the current adjusting module is used for adjusting the current value corresponding to the phase voltage to a current preset value; the voltage amplitude of the phase voltage is within a voltage safety range; the range of the voltage preset value is 1-10V; the current preset value ranges from 5mA to 10 mA. The technical problems that potential voltage accessed by metering personnel in the process of practicing the calibration of the metering device is high and potential safety hazards exist are solved.
Description
Technical Field
The application relates to the technical field of electric energy metering, in particular to a wrong wiring device for electric energy metering.
Background
With the development of social economy, China uses hundreds of millions of kilowatts of electricity every year. In the power grid, the power consumption metering device meters the power consumption. Therefore, it is important to ensure accurate measurement of the electric energy measuring device.
To ensure the accuracy of the electric energy metering device, the electric energy metering device is usually checked before use. The verification means that a metering person accesses an error electric signal to the electric energy metering device in a state of wrong wiring, and parameters such as voltage, current, power factor, frequency and the like are verified.
In the prior art, the wrong wiring mode has various modes. For three-phase three-wire voltage, there are 6 error modes of phase voltage, 8 current phase sequences and 6 x 8 types in total. Because the wrong wiring mode is more, for guaranteeing accurate check-up work, the measurement personnel need constantly practise the wiring in order to ensure that the wrong mode of line access is unanimous with predetermineeing the wrong mode of wiring, but, the three-phase voltage of access is higher, and there is the potential safety hazard in the in-process of measurement personnel practising the wiring.
Disclosure of Invention
In view of this, the application provides an error termination for electric energy measurement, has solved when the electric energy measurement student trains, has the technical problem of potential safety hazard in the in-process of cut-in high voltage.
The application provides a wrong termination for electric energy measurement includes: the device comprises a voltage adjusting module and a current adjusting module;
the input end of the voltage adjusting module is used for inputting phase voltage, the output end of the voltage adjusting module is used for connecting an electric energy metering device, and the voltage adjusting module is used for adjusting the phase voltage to a preset voltage value;
the input end of the current adjusting module is used for inputting phase voltage, the output end of the current adjusting module is used for connecting the input end of the electric energy metering device, and the current adjusting module is used for adjusting the current value corresponding to the phase voltage to a current preset value;
the voltage amplitude of the phase voltage is within a voltage safety range;
the range of the voltage preset value is 1-10V;
the range of the current preset value is 5-10 mA.
Alternatively,
the voltage adjustment module includes: two voltage circuits;
the voltage circuit includes: a first integrated operational amplifier module, variable resistance RF 1;
the inverting input end of the first integrated operational amplifier module is connected with the first end of the variable resistor RF1, and the output end of the first integrated operational amplifier module is connected with the second end of the variable resistor RF 1.
Alternatively,
the voltage circuit further includes: a resistor R1, a resistor R2, a variable resistor R3 and a resistor R4;
the first end of the resistor R1 is connected with the first input end of the voltage circuit, and the second end of the resistor R1 is connected with the inverting input end of the first integrated operational amplifier module;
the first end of the resistor R2 is connected with the second input end of the voltage circuit, and the second end of the resistor R2 is connected with the non-inverting input end of the first integrated operational amplifier module;
the first end of the variable resistor R3 is connected with the second end of the resistor R2, and the second end is grounded;
the first end of the resistor R4 is connected with the output end of the first integrated operational amplifier module, and the second end is connected with the output end of the voltage circuit.
Alternatively,
the wrong wiring device for electric energy metering further comprises: a voltage phase sequence module;
the voltage phase sequence module includes: the first switches are formed by connecting three mechanical switches in parallel;
the input end of the first switch is used for inputting a voltage phase sequence type signal;
the two input ends of the voltage phase sequence module are correspondingly connected with the output ends of the two voltage circuits one by one and are used for receiving the output signals of the voltage adjusting module;
and the voltage phase sequence module is used for converting the voltage phase sequence of the output signal of the voltage adjusting module according to the voltage phase sequence type signal and outputting the converted output signal.
Alternatively,
the voltage phase sequence module includes: a plurality of second switches, the second switches being ganged switches;
the plurality of second switches are connected with the plurality of first switches in a one-to-one correspondence mode.
Alternatively,
the voltage phase sequence module also comprises a plurality of first indicator lamps;
the first indicating lamps are connected with the second switches in a one-to-one corresponding mode, and the first indicating lamps are used for indicating the switch states of the second switches which are connected correspondingly.
Alternatively,
the current adjusting module comprises two current circuits;
the current circuit includes: the second integrated operational amplifier module, the variable resistor RF2, the inductive load, the capacitive load and the variable resistor R8;
the inverting input end of the second integrated operational amplifier module is connected with the first end of the variable resistor RF2, and the output end of the second integrated operational amplifier module is connected with the second end of the variable resistor RF 2;
the first end of the variable resistor R8 is connected with the output end of the second integrated operational amplifier module, and the second end is connected with the first ends of the inductive load and the capacitive load which are connected in parallel;
and the second ends of the inductive load and the capacitive load which are connected in parallel are connected with the output end of the current circuit.
Alternatively,
the wrong wiring device for electric energy metering further comprises: a current phase sequence module;
the current phase sequence module includes: the third switches are formed by connecting three mechanical switches in parallel;
the input end of the third switch is used for inputting a current phase sequence type signal;
the two input ends of the current phase sequence module are correspondingly connected with the output ends of the two current circuits one by one and are used for receiving the output signals of the current adjusting module;
and the current phase sequence module is used for converting the output signal of the current adjusting module into a current phase sequence and outputting the current phase sequence according to the current phase sequence type signal.
Alternatively,
the current phase sequence module includes: a plurality of fourth switches, which are linkage switches;
the plurality of fourth switches and the plurality of third switches are connected in a one-to-one correspondence manner.
Alternatively,
the current phase sequence module also comprises a plurality of second indicator lamps;
and the second indicator lamps are connected with the fourth switches in a one-to-one corresponding mode and used for indicating the switch states of the correspondingly connected fourth switches.
According to the technical scheme, the method has the following advantages:
when the electric energy metering device is used for calibration, the metering personnel need to practice connection in multiple error modes, but the access voltage is usually high, and potential safety hazards exist for the metering personnel. Therefore, the wrong wiring device for electric energy metering inputs phase voltage within a safe voltage range, the input phase voltage adjusts the output voltage value of the wrong wiring device to a voltage preset value through a voltage adjusting module and outputs the voltage preset value, the range of the voltage preset value is 1-10V, the output current value of the wrong wiring device is adjusted to a circuit preset value through a current adjusting module and outputs the circuit preset value, the range of the current preset value is 5-10mA, and the adjusted output voltage and current are connected into the electric energy metering device.
The phase voltage of input in the safety range among the electric energy metering device, output voltage and electric current in the safety range, at the in-process of practicing the wrong wiring mode of connection, the phase voltage is in the safety range, has solved that the phase voltage that the measurement personnel accessed at the in-process of practicing the calibration of metering device is higher, has the technical problem of potential safety hazard.
Drawings
FIG. 1 is a schematic diagram of two voltage circuits of a wrong wiring device for electric energy metering in an embodiment of the present application;
FIG. 2 is a circuit diagram of a voltage phase sequence module of a wrong wiring device for electric energy metering according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a current circuit of a wrong wiring device for electrical energy metering in an embodiment of the present application;
fig. 4 is a circuit diagram of a current phase-sequence module of a wrong wiring device for electric energy metering according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a wrong termination for electric energy measurement, has solved electric energy measurement personnel and has practiced the looks voltage of the in-process access of metering device check-up higher, has the technical problem of potential safety hazard.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
A mis-wiring device for electric energy metering, which is an implementation of the present application, and as will be understood with reference to fig. 1 to 4, specifically includes: the input end of the voltage adjusting module is used for inputting phase voltage, the output end of the voltage adjusting module is used for connecting the electric energy metering device, the voltage adjusting module adjusts the input phase voltage and then outputs a preset voltage value, the preset voltage value is input to the input end of the electric energy metering device, and the range of the preset voltage value is 1-10V; the input end of the current adjusting module is used for inputting phase voltage, the output end of the current adjusting module is used for connecting the electric energy metering device, and the current adjusting module is used for adjusting the current value corresponding to the phase voltage to a current preset value, wherein the current preset value ranges from 5mA to 10 mA.
In this embodiment, the output voltage preset values may be 3V, 5V, 7V, and 8V, which can be selected by those skilled in the art as needed; the current preset values output by the current adjusting module can be 5mA, 6mA, 7mA and 8 mA. The setting can be made as required by those skilled in the art.
In this embodiment, when the metering personnel are used for practicing the calibration of the electric energy metering device, connection in multiple error modes needs to be practiced, but the access voltage is generally high, and potential safety hazards exist for the metering personnel. Therefore, the wrong wiring device for electric energy metering inputs phase voltage within a safe voltage range, the input phase voltage adjusts the output voltage value to the voltage preset value through the voltage adjusting module and outputs the voltage preset value, the current adjusting module adjusts the output current value to the circuit preset value and outputs the circuit preset value, and the output voltage and current are adjusted and connected into the electric energy metering device.
The range of the voltage preset value is 1-10V, the range of the current preset value is 5-10mA, and the voltage preset value and the current preset value are both in the safe range of voltage and current.
The phase voltage input in the safety range in the electric energy metering device is in the safety range in the process of practicing the connection error wiring mode, so that the technical problem that potential voltage accessed by metering personnel in the process of practicing the calibration of the metering device is high and potential safety hazards exist is solved.
The following is a second embodiment of the present application, which describes in detail an erroneous wiring device for electric energy metering based on the first embodiment, specifically referring to fig. 1 to 4, and specifically includes:
the metered fault junction box further comprises: two voltage circuits;
the voltage circuit includes: the circuit comprises a first integrated operational amplifier module, a variable resistor RF1, a resistor R1, a resistor R2, a variable resistor R3 and a resistor R4; the inverting input end of the first integrated operational amplifier module is connected with the first end of the variable resistor RF1, and the output end of the first integrated operational amplifier module is connected with the second end of the variable resistor RF 1; the first end of the resistor R1 is connected with the first input end of the voltage circuit, and the second end of the resistor R1 is connected with the inverted input end of the first integrated operational amplifier module; the first end of the resistor R2 is connected with the second input end of the voltage circuit, and the second end of the resistor R2 is connected with the non-inverting input end of the first integrated operational amplifier module; the first end of the variable resistor R3 is connected with the second end of the resistor R2, and the second end is grounded; the first end of the resistor R4 is connected with the output end of the first integrated operational amplifier module, and the second end is connected with the output end of the voltage circuit.
It should be noted that the input ends of the two voltage circuits respectively correspond to input phase voltages, for example, the input end of one of the voltage circuits inputs the a-phase and B-phase voltages after voltage regulation and the input end of the other voltage circuit inputs the B-phase and C-phase voltages after voltage regulation, and those skilled in the art can select the input phase voltages as required. Adjusting the phase voltage down is prior art in the art and will not be described here.
Specifically, the wrong wiring device for electric energy metering further comprises a voltage phase sequence module;
the voltage phase sequence module comprises: the first switches, the second switches and the first indicator lamps are arranged on the base; the first switch is formed by connecting three mechanical switches in parallel; the input end of the first switch is used for inputting a voltage phase sequence type signal; and the two input ends of the voltage phase sequence module are connected with the output ends of the two voltage circuits in a one-to-one correspondence manner and are used for receiving the output signals of the voltage adjusting module.
And the voltage phase sequence module is used for converting the voltage phase sequence of the output signal of the voltage adjusting module according to the voltage phase sequence type signal and outputting the converted output signal.
It should be noted that the second switches are linkage switches, the plurality of first indicator lights are connected with the plurality of second switches in a one-to-one correspondence manner, and the first indicator lights are used for indicating the on-off states of the correspondingly connected second switches.
It can be understood that the number of the first switch, the second switch and the first indicator light can be 6; one first switch is correspondingly connected with one kind of voltage phase sequence type signal, and 6 first switches are respectively in one-to-one correspondence with 6 kinds of voltage phase sequence signals, for example, as shown in fig. 2, the phase sequence of the voltage signal output by the output end of the voltage phase sequence module from top to bottom may be ABC, ACB, BAC, BCA, CAB, CBA, and may be selected by those skilled in the art as needed.
In this embodiment, the second switch and a voltage phase sequence kind signal, when carrying out the electric energy metering device check-up and need carry out wrong wiring operation, need not to carry out manual setting wiring, only need control the second switch, select the output voltage phase sequence kind that corresponds, voltage phase sequence module can carry out the output and predetermine voltage phase sequence signal, at the in-process of wiring, avoided actual wiring and predetermine the inconsistent and influence the circumstances of check-up of wiring, and simultaneously, the operating procedure of wiring has still been reduced, and the efficiency is improved.
The following is a third embodiment of the present application, which describes in detail an erroneous wiring device for electric energy metering based on the first embodiment, and please refer to fig. 3 and fig. 4, and the detailed description specifically includes:
the wrong termination of electric energy measurement still includes:
the current adjusting module comprises two current circuits;
the current circuit includes: the second integrated operational amplifier module, the variable resistor RF2, the inductive load, the capacitive load, the variable resistor R8, the resistor R5, the resistor R6, the resistor R7 and the inductor L1;
further, the inverting input end of the second integrated operational amplifier module is connected with the first end of the variable resistor RF2, and the output end of the second integrated operational amplifier module is connected with the second end of the variable resistor RF 2; the first end of the variable resistor R8 is connected with the output end of the second integrated operational amplifier module, and the second end is connected with the first ends of the inductive load and the capacitive load which are connected in parallel; the second ends of the inductive load and the capacitive load which are connected in parallel are connected with the output end of the current circuit; the first end of the resistor R5 is grounded, and the second end of the resistor R5 is connected with the inverting input end of the second integrated operational amplifier module; the first end of the resistor R6 is connected with the input end of the current circuit, and the second end of the resistor R6 is connected with the non-inverting input end of the second integrated operational amplifier; the first end of the resistor R7 is connected with the second end of the resistor R6, and the second end is grounded; the inductor L1 has a first terminal connected to the output terminal of the current circuit and a second terminal connected to ground.
Specifically, the wrong wiring device for electric energy metering further comprises: a current phase sequence module;
the current phase sequence module includes: a plurality of third switches, a plurality of fourth switches and a plurality of second indicating lamps; the input end of the third switch is used for inputting a current phase sequence type signal; the two input ends of the current phase sequence module are correspondingly connected with the output ends of the two current circuits one by one and used for receiving the output signals of the current adjusting module; and the current phase sequence module is used for converting the output signal of the current adjusting module into a current phase sequence and outputting the current phase sequence according to the current phase sequence type signal.
It should be noted that the fourth switch is a linkage switch, the plurality of second indicator lights are connected with the plurality of fourth switches in a one-to-one correspondence manner, and the second indicator lights are used for indicating the on-off states of the correspondingly connected fourth switches.
It is understood that the number of the third switch, the number of the fourth switch and the number of the second indicator light may be 8; one third switch is correspondingly connected with one kind of current phase sequence type signal, and 8 third switches are respectively corresponding to 8 kinds of current phase sequence signals one by one, for example, as shown in fig. 4, the phase sequence of the current signal output by the output end of the voltage phase sequence module from top to bottom can be IAIC, -IAIC, IA-IC, -IA-IC, ICIA, -ICIA, IC-IA, and IC-IA.
In this embodiment, the current phase sequence module is used to connect the phase sequence of the current signal output by the current circuit to the energy metering device, the second linkage switch on the current phase sequence module is turned on or off, the phase sequence of the current signal input to the current phase sequence module can be output in a phase sequence incompatible manner according to the selection of the second linkage switch, and the actual wiring and the preset wiring are prevented from being in a wrong state in the steps of checking and wrong wiring in the electric energy metering device.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A mis-wiring device for electrical energy metering, comprising: the device comprises a voltage adjusting module and a current adjusting module;
the input end of the voltage adjusting module is used for inputting phase voltage, the output end of the voltage adjusting module is used for connecting an electric energy metering device, and the voltage adjusting module is used for adjusting the phase voltage to a preset voltage value;
the input end of the current adjusting module is used for inputting phase voltage, the output end of the current adjusting module is used for connecting the input end of the electric energy metering device, and the current adjusting module is used for adjusting the current value corresponding to the phase voltage to a current preset value;
the voltage amplitude of the phase voltage is within a voltage safety range;
the range of the voltage preset value is 1-10V;
the range of the current preset value is 5-10 mA.
2. The mis-wiring device for electrical energy metering of claim 1, wherein the voltage regulation module comprises: two voltage circuits;
the voltage circuit includes: a first integrated operational amplifier module, variable resistance RF 1;
the inverting input end of the first integrated operational amplifier module is connected with the first end of the variable resistor RF1, and the output end of the first integrated operational amplifier module is connected with the second end of the variable resistor RF 1.
3. The mis-wiring device for electrical energy metering of claim 2, wherein the voltage circuit further comprises: a resistor R1, a resistor R2, a variable resistor R3 and a resistor R4;
the first end of the resistor R1 is connected with the first input end of the voltage circuit, and the second end of the resistor R1 is connected with the inverting input end of the first integrated operational amplifier module;
the first end of the resistor R2 is connected with the second input end of the voltage circuit, and the second end of the resistor R2 is connected with the non-inverting input end of the first integrated operational amplifier module;
the first end of the variable resistor R3 is connected with the second end of the resistor R2, and the second end is grounded;
the first end of the resistor R4 is connected with the output end of the first integrated operational amplifier module, and the second end is connected with the output end of the voltage circuit.
4. The mis-wiring device for electric energy metering as set forth in claim 2, further comprising: a voltage phase sequence module;
the voltage phase sequence module includes: the first switches are formed by connecting three mechanical switches in parallel;
the input end of the first switch is used for inputting a voltage phase sequence type signal;
the two input ends of the voltage phase sequence module are correspondingly connected with the output ends of the two voltage circuits one by one and are used for receiving the output signals of the voltage adjusting module;
and the voltage phase sequence module is used for converting the voltage phase sequence of the output signal of the voltage adjusting module according to the voltage phase sequence type signal and outputting the converted output signal.
5. The wrong wiring device for electric energy metering as recited in claim 4 wherein said voltage phase sequence module comprises: a plurality of second switches, the second switches being ganged switches;
the plurality of second switches are connected with the plurality of first switches in a one-to-one correspondence mode.
6. The wrong wiring device for electric energy metering according to claim 5 characterized in that said voltage phase sequence module also includes several first indicator lights;
the first indicating lamps are connected with the second switches in a one-to-one corresponding mode, and the first indicating lamps are used for indicating the switch states of the second switches which are connected correspondingly.
7. The mis-wiring device for electrical energy metering of claim 1, wherein the current regulation module comprises two current circuits;
the current circuit includes: the second integrated operational amplifier module, the variable resistor RF2, the inductive load, the capacitive load and the variable resistor R8;
the inverting input end of the second integrated operational amplifier module is connected with the first end of the variable resistor RF2, and the output end of the second integrated operational amplifier module is connected with the second end of the variable resistor RF 2;
the first end of the variable resistor R8 is connected with the output end of the second integrated operational amplifier module, and the second end is connected with the first ends of the inductive load and the capacitive load which are connected in parallel;
and the second ends of the inductive load and the capacitive load which are connected in parallel are connected with the output end of the current circuit.
8. The mis-wiring device for electric energy metering as set forth in claim 7, further comprising: a current phase sequence module;
the current phase sequence module includes: the third switches are formed by connecting three mechanical switches in parallel;
the input end of the third switch is used for inputting a current phase sequence type signal;
the two input ends of the current phase sequence module are correspondingly connected with the output ends of the two current circuits one by one and are used for receiving the output signals of the current adjusting module;
and the current phase sequence module is used for converting the output signal of the current adjusting module into a current phase sequence and outputting the current phase sequence according to the current phase sequence type signal.
9. The wrong wiring device for electric energy metering as recited in claim 8 wherein said current phase sequence module comprises: a plurality of fourth switches, which are linkage switches;
the plurality of fourth switches and the plurality of third switches are connected in a one-to-one correspondence manner.
10. The wrong wiring device for electric energy metering as recited in claim 9 wherein said current phase sequence module further comprises a plurality of second indicator lights;
and the second indicator lamps are connected with the fourth switches in a one-to-one corresponding mode and used for indicating the switch states of the correspondingly connected fourth switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911066521.6A CN111308407A (en) | 2019-11-04 | 2019-11-04 | A wrong termination for electric energy measurement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911066521.6A CN111308407A (en) | 2019-11-04 | 2019-11-04 | A wrong termination for electric energy measurement |
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| CN111308407A true CN111308407A (en) | 2020-06-19 |
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| CN201911066521.6A Pending CN111308407A (en) | 2019-11-04 | 2019-11-04 | A wrong termination for electric energy measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132040A (en) * | 2022-06-27 | 2022-09-30 | 广东电网有限责任公司 | Electric energy measurement secondary circuit wiring training device |
| CN116699474A (en) * | 2023-08-03 | 2023-09-05 | 江苏纳通能源技术有限公司 | Three-phase ammeter phase sequence correction method and three-phase energy storage inverter |
-
2019
- 2019-11-04 CN CN201911066521.6A patent/CN111308407A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132040A (en) * | 2022-06-27 | 2022-09-30 | 广东电网有限责任公司 | Electric energy measurement secondary circuit wiring training device |
| CN115132040B (en) * | 2022-06-27 | 2023-06-16 | 广东电网有限责任公司 | Electric energy measurement secondary circuit wiring training set |
| CN116699474A (en) * | 2023-08-03 | 2023-09-05 | 江苏纳通能源技术有限公司 | Three-phase ammeter phase sequence correction method and three-phase energy storage inverter |
| CN116699474B (en) * | 2023-08-03 | 2023-10-27 | 江苏纳通能源技术有限公司 | Three-phase ammeter phase sequence correction method and three-phase energy storage inverter |
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