CN114167318A - Current transformer wireless polarity judgment device and method capable of supplying power to negative control terminal - Google Patents
Current transformer wireless polarity judgment device and method capable of supplying power to negative control terminal Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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Abstract
The invention belongs to the technical field of mutual inductor polarity judgment, and particularly relates to a current mutual inductor wireless polarity judgment device and a method capable of supplying power to a negative control terminal, wherein the current mutual inductor wireless polarity judgment device comprises a shell, a power module, a wireless controller module, a voltage conversion module, a wireless remote controller and a measurement display module; the wireless controller module is connected with the primary side of the current transformer; the measurement display module is connected with the secondary side of the current transformer; the power supply module is used for providing a working power supply; the wireless remote controller is used for controlling the on-off of the wireless controller module; the wireless controller module is used for controlling the on or off of the working power supply under the control of the wireless remote controller; the voltage conversion module is used for converting the voltage of the voltage signal output by the working power supply module into a power supply suitable for the work of the load control terminal; and the measurement display module is used for judging the polarity state of the current transformer. The invention avoids removing stitches to directly judge polarity and is not limited by physical space. The power supply part can adapt to a negative control terminal, uses low voltage and is safe.
Description
Technical Field
The invention belongs to the technical field of mutual inductor polarity judgment, and particularly relates to a current mutual inductor wireless polarity judgment device and method capable of supplying power to a negative control terminal.
Background
In the current transformer substation measurement and acceptance work, the working contents of checking the polarity of a primary side and a secondary side of a current transformer in a measurement loop, setting a negative control terminal on site, copying an old electric energy meter code and the like are included. The traditional method for checking the polarity of the current transformer needs to disassemble a lead wire for secondary measurement, and the universal meter is used for aligning, so that the efficiency is low, errors are easy to occur, and parts of complex structures cannot be manufactured on site. In the work of setting a negative control terminal on site, reading meter codes of an old electric energy meter and the like, the situation that the terminal and a built-in battery of the electric energy meter are dead is often faced, the currently adopted counter measure is to purchase a finished 220V inverted power supply, but the counter measure is few in adaptation occasions (only suitable for a low-voltage meter and the terminal) and has low-voltage electric shock risks, and the efficiency of metering and acceptance of a transformer substation is influenced under the situation that the negative control terminal or the electric energy meter is dead.
The application number is 201810973530.2, and the name is that a mutual inductor wireless polarity testing device and method records: the technical scheme adopted by the invention for solving the technical problem is a mutual inductor wireless polarity testing device, which comprises main equipment connected to the primary side of a mutual inductor and testing equipment connected to the secondary side of the mutual inductor; the main equipment comprises a wireless receiving module, a signal output module, a signal adjusting module and a power conversion circuit, the testing equipment comprises a wireless transmitting module, a control module and a measuring module, the control module is connected with the wireless transmitting module, the wireless transmitting module is wirelessly connected with the wireless receiving module, the wireless receiving module is sequentially connected with the signal output module and the primary side of the mutual inductor, the signal output module is further connected with the signal adjusting module, the power conversion circuit is connected with the wireless receiving module, and the measuring module is connected with the secondary side of the mutual inductor. The number of used devices is small, and the polarity test of the mutual inductor can be independently completed by only one person, so that the field working efficiency is improved, the labor and the time are saved, and the measuring accuracy is greatly improved. But the circuit is complicated, and the negative control terminal in the work of checking and accepting the measurement of transformer substation can not be supplied with power simultaneously.
Disclosure of Invention
Aiming at the problems, the invention provides the current transformer wireless polarity judgment device and method capable of supplying power to the negative control terminal, and the device and method have the functions of integrally aligning the metering loop and lighting the metering device under the low-level working condition, so that the working efficiency is improved, and the safety level is improved. The specific technical scheme is as follows:
the wireless polarity judgment device of the current transformer capable of supplying power to the negative control terminal comprises a shell, a power module, a wireless controller module, a voltage conversion module, a wireless remote controller and a measurement display module; the power supply module, the wireless controller module and the voltage conversion module are fixed in the shell;
the wireless controller module and the voltage conversion module are respectively connected with the power supply module;
the boosting module is connected with the negative control terminal; the wireless controller module is connected with the primary side of the current transformer; the measurement display module is connected with the secondary side of the current transformer;
the power supply module is used for providing a working power supply; the wireless remote controller is used for controlling the on-off of the wireless controller module; the wireless controller module is used for controlling the on or off of the working power supply under the control of the wireless remote controller; the voltage conversion module is used for converting the voltage of the voltage signal output by the working power supply module into a power supply suitable for the work of the negative control terminal; and the measurement display module is used for judging the polarity state of the current transformer.
Preferably, the power module includes a rechargeable lithium battery.
Preferably, the wireless controller module comprises a wireless receiving module, a main control module and a switch module, the wireless remote controller comprises a wireless transmitting module, a control module and a button switch, and the button switch, the control module and the wireless transmitting module are sequentially connected; the control module is used for sending a control signal to the wireless receiving module through the wireless sending module under the control of the button switch; the main control module is used for receiving the control signal of the control module through the wireless receiving module and controlling the on-off of the switch module.
Preferably, the wireless sending module and the wireless receiving module perform data transmission in a radio frequency mode.
Preferably, the measurement display module comprises a millivoltmeter.
Preferably, the positive electrode of the power supply module is connected with the P1 terminal of the primary side of the current transformer through the wireless controller module, and the P2 terminal of the primary side of the current transformer is connected with the negative electrode of the power supply module; the measurement display module comprises a light-emitting diode, the anode of the light-emitting diode is connected with the S1 end of the secondary side of the current transformer, and the cathode of the light-emitting diode is connected with the S2 end of the secondary side of the current transformer.
Preferably, the voltage conversion module includes a voltage boosting circuit and a voltage dropping circuit.
The method for judging the wireless polarity of the current transformer capable of supplying power to the negative control terminal comprises the following steps:
s1: connecting the positive pole of the power supply module to the P1 end of the primary side of the current transformer through the wireless controller module, and connecting the P2 end of the primary side of the current transformer to the negative pole of the power supply module;
s2: connecting the positive end of the measurement display module to the terminal S1 of the secondary side of the current transformer, and connecting the negative end of the measurement display module to the terminal S2 of the secondary side of the current transformer;
s3: remotely controlling the switch module in the wireless controller module to be closed through a wireless remote controller, watching the state displayed by the measurement display module, then immediately switching off, observing the state displayed by the measurement display module, and comprehensively judging the polarity of the current transformer;
s4: when the negative control terminal needs to be powered, the positive output end of the voltage conversion module is connected to the positive input end of the negative control terminal through the connecting wire, and the negative output end of the voltage conversion module is connected to the negative input end of the negative control terminal.
The invention has the beneficial effects that: the invention avoids removing stitches to directly judge polarity and is not limited by physical space. The power supply part can adapt to all mass production load control terminals, and is low in voltage and safe. The invention adopts a wireless control mode, the primary side and the secondary side of the current transformer have a certain distance in practical application, and the deflection direction of the millivoltmeter can be observed from the secondary side of the current transformer after the invention is arranged on the primary side of the current transformer, so that the invention can be operated by only one person. In the measurement acceptance work, namely when the transformer substation is just built and is not started yet, the negative control terminal needs to be detected, and when the negative control terminal is powered off, the positive end of the power supply conversion module is connected to the positive end of the power supply of the negative control terminal, and the negative end of the power supply conversion module is connected to the negative end of the power supply of the negative control terminal, so that the power supply for the negative control terminal is realized, the measurement acceptance efficiency can be improved, and the convenience is improved compared with the conventional method for additionally providing a power supply.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic diagram of the principle of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As shown in fig. 1, an embodiment of the present invention provides a current transformer wireless polarity determining apparatus capable of supplying power to a negative control terminal, which includes a housing, a power module, a wireless controller module, a voltage conversion module, a wireless remote controller, and a measurement display module; the power supply module, the wireless controller module and the voltage conversion module are fixed in the shell; the wireless controller module and the voltage conversion module are respectively connected with the power supply module;
the boosting module is connected with the negative control terminal; the wireless controller module is connected with the primary side of the current transformer; the measurement display module is connected with the secondary side of the current transformer; the power supply module is used for providing a working power supply; the wireless remote controller is used for controlling the on-off of the wireless controller module; the wireless controller module is used for controlling the on or off of the working power supply under the control of the wireless remote controller; the voltage conversion module is used for converting the voltage of the voltage signal output by the working power supply module into a power supply suitable for the work of the negative control terminal; and the measurement display module is used for judging the polarity state of the current transformer.
The power module comprises a rechargeable lithium battery, so that the problem of battery waste in the conventional dry battery test can be solved.
The wireless controller module comprises a wireless receiving module, a main control module and a switch module, the wireless remote controller comprises a wireless transmitting module, a control module and a button switch, and the button switch, the control module and the wireless transmitting module are sequentially connected; the control module is used for sending a control signal to the wireless receiving module through the wireless sending module under the control of the button switch; the main control module is used for receiving the control signal of the control module through the wireless receiving module and controlling the on-off of the switch module. The wireless sending module and the wireless receiving module carry out data transmission in a radio frequency mode. The voltage conversion module comprises a boosting circuit and a voltage reduction circuit, can convert the voltage of the power supply module into the proper working voltage of the negative control terminal, and is high in applicability.
The working principle of the wireless controller module and the wireless remote controller is as follows: the button switch of the wireless remote controller starts a control module to send a control signal of a closing switch to a wireless sending module, the wireless sending module sends the control signal to a wireless receiving module of a wireless controller module, the wireless receiving module sends the control signal to a main control module, the main control module processes the control signal of the closing switch and then controls the switch module to be closed, the power supply module conveys a power supply signal to the primary side of a current transformer, then the button switch is pressed, the starting control module sends the control signal of the opening switch to the wireless sending module, the wireless sending module sends the control signal to the wireless receiving module of the wireless controller module, the wireless receiving module sends the control signal to the main control module, and the main control module processes the control signal of the opening switch and then controls the switch module to be opened.
The positive electrode of the power supply module is connected with the P1 end on the primary side of the current transformer through the wireless controller module, and the P2 end on the primary side of the current transformer is connected with the negative electrode of the power supply module; the measurement display module comprises a millivoltmeter, wherein the positive electrode of the millivoltmeter is connected with the S1 end of the secondary side of the current transformer, and the negative electrode of the millivoltmeter is connected with the S2 end of the secondary side of the current transformer.
The working principle of the device is as follows: the power supply module is fixed to the primary side of the current transformer, the positive electrode of the power supply module is connected to the P1 end of the primary side of the current transformer through the wireless controller module by using a connecting wire with an alligator clip, and the negative electrode of the power supply module is connected to the P2 end of the current transformer through the connecting wire. The positive electrode of a millivoltmeter is connected to the S1 end of the secondary side of the current transformer, the negative electrode of the millivoltmeter is connected to the S2 end of the secondary side of the current transformer, a button switch of a wireless remote controller is used for starting a control module to send a control signal of a closed switch to a wireless sending module, the wireless sending module sends the control signal to a wireless receiving module of a wireless controller module, the wireless receiving module sends the control signal to a main control module, the main control module processes the control signal of the closed switch and then controls the switch module to be closed, the power supply module sends a power supply signal to the primary side of the current transformer, then the button switch is pressed, the starting control module sends the control signal of an open switch to the wireless sending module, the wireless sending module sends the control signal to the wireless receiving module of the wireless controller module, and the wireless receiving module sends the control signal to the main control module, the master control module processes a control signal of the disconnecting switch and then controls the switch module to be disconnected, if the millivolt meter on the secondary side of the current transformer observes that the pointer is positively biased, and after the control switch module is disconnected, the pointer of the millivolt meter is negatively biased, the polarity of the current transformer is correct, if the millivolt meter on the secondary side of the current transformer observes that the pointer is negatively biased, and after the control switch module is disconnected, the pointer of the millivolt meter is observed positively biased, and if the current transformer is positively biased, the polarity of the current transformer is incorrect and needs to be verified. The invention adopts a wireless control mode, the primary side and the secondary side of the current transformer have a certain distance in practical application, and the deflection direction of the millivoltmeter can be observed from the secondary side of the current transformer after the invention is arranged on the primary side of the current transformer, so that the invention can be operated by only one person. In the measurement acceptance work, namely when the transformer substation is just built and is not started yet, the negative control terminal needs to be detected, and when the negative control terminal is powered off, the positive end of the power supply conversion module is connected to the positive end of the power supply of the negative control terminal, and the negative end of the power supply conversion module is connected to the negative end of the power supply of the negative control terminal, so that the power supply for the negative control terminal is realized, the measurement acceptance efficiency can be improved, and the convenience is improved compared with the conventional method for additionally providing a power supply.
The method for judging the wireless polarity of the current transformer capable of supplying power to the negative control terminal comprises the following steps:
s1: connecting the positive pole of the power supply module to the P1 end of the primary side of the current transformer through the wireless controller module, and connecting the P2 end of the primary side of the current transformer to the negative pole of the power supply module;
s2: connecting the positive end of the measurement display module to the terminal S1 of the secondary side of the current transformer, and connecting the negative end of the measurement display module to the terminal S2 of the secondary side of the current transformer;
s3: remotely controlling the switch module in the wireless controller module to be closed through a wireless remote controller, watching the state displayed by the measurement display module, then immediately switching off, observing the state displayed by the measurement display module, and comprehensively judging the polarity of the current transformer;
s4: when the negative control terminal needs to be powered, the positive output end of the voltage conversion module is connected to the positive input end of the negative control terminal through the connecting wire, and the negative output end of the voltage conversion module is connected to the negative input end of the negative control terminal.
Example 2:
the positive electrode of the power supply module is connected with the P1 end on the primary side of the current transformer through the wireless controller module, and the P2 end on the primary side of the current transformer is connected with the negative electrode of the power supply module; the measurement display module comprises a light-emitting diode, the anode of the light-emitting diode is connected with the S1 end of the secondary side of the current transformer, and the cathode of the light-emitting diode is connected with the S2 end of the secondary side of the current transformer.
The control signal of a closed switch is sent to a wireless sending module by a button switch starting control module of a wireless remote controller, the wireless sending module sends the control signal to a wireless receiving module of a wireless controller module, the wireless receiving module sends the control signal to a main control module, the main control module processes the control signal of the closed switch and then controls the switch module to be closed, the power supply module transmits a power supply signal to the primary side of a current transformer, then the button switch is pressed, the starting control module sends the control signal of a disconnected switch to the wireless sending module, the wireless sending module sends the control signal to a wireless receiving module of the wireless controller module, the wireless receiving module sends the control signal to the main control module, the main control module processes the control signal of the disconnected switch and then controls the switch module to be disconnected, if a light-emitting diode on the secondary side of the current transformer is lighted, and if the light emitting diode on the secondary side of the current transformer is observed to be not bright firstly, the control switch module is disconnected and then observes that the diode is bright, and if the current transformer is added with polarity, the polarity of the current transformer is wrong and needs to be verified. The invention adopts a wireless control mode, the primary side and the secondary side of the current transformer have a certain distance in practical application, and the deflection direction of the millivoltmeter can be observed from the secondary side of the current transformer after the invention is arranged on the primary side of the current transformer, so that the invention can be operated by only one person. In the measurement acceptance work, namely when the transformer substation is just built and is not started yet, the negative control terminal needs to be detected, and when the negative control terminal is powered off, the positive end of the power supply conversion module is connected to the positive end of the power supply of the negative control terminal, and the negative end of the power supply conversion module is connected to the negative end of the power supply of the negative control terminal, so that the power supply for the negative control terminal is realized, the measurement acceptance efficiency can be improved, and the convenience is improved compared with the conventional method for additionally providing a power supply. The rest is the same as example 1.
Example 3:
on the basis of embodiment 2, connect a wireless signal emission module behind emitting diode, wireless remote controller has wireless signal receiving module, can receive the signal that wireless signal emission module sent, if emitting diode lights, then sends wireless signal to wireless remote controller on, so can let operating personnel need not receive the space restriction, in time knows current transformer's polarity.
Those of ordinary skill in the art will appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the components of the examples have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present application, it should be understood that the division of the unit is only one division of logical functions, and other division manners may be used in actual implementation, for example, multiple units may be combined into one unit, one unit may be split into multiple units, or some features may be omitted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. Can be for the wireless polarity of current transformer that negative control terminal supplied power judges device, its characterized in that: the device comprises a shell, a power module, a wireless controller module, a voltage conversion module, a wireless remote controller and a measurement display module; the power supply module, the wireless controller module and the voltage conversion module are fixed in the shell;
the wireless controller module and the voltage conversion module are respectively connected with the power supply module;
the boosting module is connected with the negative control terminal; the wireless controller module is connected with the primary side of the current transformer; the measurement display module is connected with the secondary side of the current transformer;
the power supply module is used for providing a working power supply; the wireless remote controller is used for controlling the on-off of the wireless controller module; the wireless controller module is used for controlling the on or off of the working power supply under the control of the wireless remote controller; the voltage conversion module is used for converting the voltage of the voltage signal output by the working power supply module into a power supply suitable for the work of the negative control terminal; and the measurement display module is used for judging the polarity state of the current transformer.
2. The device for determining the wireless polarity of a current transformer capable of supplying power to a negative control terminal according to claim 1, wherein: the power module includes a rechargeable lithium battery.
3. The device for determining the wireless polarity of a current transformer capable of supplying power to a negative control terminal according to claim 1, wherein: the wireless controller module comprises a wireless receiving module, a main control module and a switch module, the wireless remote controller comprises a wireless transmitting module, a control module and a button switch, and the button switch, the control module and the wireless transmitting module are sequentially connected; the control module is used for sending a control signal to the wireless receiving module through the wireless sending module under the control of the button switch; the main control module is used for receiving the control signal of the control module through the wireless receiving module and controlling the on-off of the switch module.
4. The device for determining the wireless polarity of a current transformer capable of supplying power to a negative control terminal according to claim 3, wherein: and the wireless sending module and the wireless receiving module carry out data transmission in a radio frequency mode.
5. The device for determining the wireless polarity of a current transformer capable of supplying power to a negative control terminal according to claim 1, wherein: the measurement display module includes a millivoltmeter.
6. The device for determining the wireless polarity of a current transformer capable of supplying power to a negative control terminal according to claim 1, wherein: the positive electrode of the power supply module is connected with the P1 end on the primary side of the current transformer through the wireless controller module, and the P2 end on the primary side of the current transformer is connected with the negative electrode of the power supply module; the measurement display module comprises a light-emitting diode, the anode of the light-emitting diode is connected with the S1 end of the secondary side of the current transformer, and the cathode of the light-emitting diode is connected with the S2 end of the secondary side of the current transformer.
7. The device for determining the wireless polarity of a current transformer capable of supplying power to a negative control terminal according to claim 1, wherein: the voltage conversion module comprises a boosting circuit and a voltage reduction circuit.
8. The current transformer wireless polarity judgment method capable of supplying power to the negative control terminal is characterized by comprising the following steps: the method comprises the following steps:
s1: connecting the positive pole of the power supply module to the P1 end of the primary side of the current transformer through the wireless controller module, and connecting the P2 end of the primary side of the current transformer to the negative pole of the power supply module;
s2: connecting the positive end of the measurement display module to the terminal S1 of the secondary side of the current transformer, and connecting the negative end of the measurement display module to the terminal S2 of the secondary side of the current transformer;
s3: remotely controlling the switch module in the wireless controller module to be closed through a wireless remote controller, watching the state displayed by the measurement display module, then immediately switching off, observing the state displayed by the measurement display module, and comprehensively judging the polarity of the current transformer;
s4: when the negative control terminal needs to be powered, the positive output end of the voltage conversion module is connected to the positive input end of the negative control terminal through the connecting wire, and the negative output end of the voltage conversion module is connected to the negative input end of the negative control terminal.
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| CN214409258U (en) * | 2021-02-26 | 2021-10-15 | 国家电网有限公司 | Polarity testing device of multifunctional current transformer |
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