CN111596113A - Lightning arrester action current measuring circuit and method - Google Patents
Lightning arrester action current measuring circuit and method Download PDFInfo
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- CN111596113A CN111596113A CN202010428820.6A CN202010428820A CN111596113A CN 111596113 A CN111596113 A CN 111596113A CN 202010428820 A CN202010428820 A CN 202010428820A CN 111596113 A CN111596113 A CN 111596113A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
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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
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/17—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers
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- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses an arrester action current measuring circuit, which comprises a Rogowski coil, a multi-stage voltage limiting circuit, an integrating circuit, a rectifying circuit, a current limiting circuit, a voltage dividing circuit and an amplifying circuit, wherein the Rogowski coil is connected with the integrating circuit; the multistage voltage limiting circuit comprises a first voltage limiting circuit, a second voltage limiting circuit and a third voltage limiting circuit, the first voltage limiting circuit is arranged at the output end of the Rogowski coil, the second voltage limiting circuit is arranged at the output end of the integrating circuit, and the third voltage limiting circuit is arranged at the output end of the rectifying circuit; each circuit is correspondingly connected, and specific components are used in a matched mode to output corresponding pulse signals to an external single chip microcomputer port. The invention also discloses a lightning arrester action current measuring method. The circuit and the method for measuring the action current of the lightning arrester effectively realize the functions of acquisition of the action signal of the lightning arrester, amplitude limiting, polarity conversion, level conversion and the like, and well limit the voltage amplitude of the whole circuit.
Description
Technical Field
The invention relates to the technical field of power equipment measurement, in particular to a circuit and a method for measuring an arrester action circuit.
Background
The lightning arrester action current is impulse current flowing through the lightning arrester under the action of lightning pulse, a pulse counting signal exceeding a threshold value can be obtained through processing the impulse current to trigger the single chip microcomputer to be interrupted, interruption information is stored in a single chip microcomputer register as lightning arrester action counting information, and the lightning arrester counting information indicates the action times of the lightning arrester under the coordination of the single chip microcomputer. It follows that the handling of the arrester operating current plays an important role in the overall operation of the arrester.
The Rogowski coil (Rogowski coil) is widely applied to a measuring circuit of impulse current of a lightning arrester by the advantages of excellent electrical insulation performance, no magnetic saturation, wide frequency response range and high measuring accuracy, and accurately reduces the original waveform of the impulse current by enabling the coil to work in a differential state and combining the integral action of an integrator outside an output end so as to realize the accurate measurement of the action current.
However, in practical application, under the action of an external large current pulse, a voltage signal obtained by a rogowski coil inside the arrester is very high and far exceeds the bearing capacity of a subsequent electronic circuit, so that the impact current cannot be subjected to correct polarity conversion and level conversion, a subsequent single chip microcomputer cannot receive correct interruption trigger signals, a counter of the arrester cannot really record the action times of the arrester, and the whole arrester equipment loses the capacity of measuring the action current.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a circuit and a method for measuring an operating current of an arrester, which can effectively solve the problems of an arrester circuit that a voltage amplitude is too high and the operating current cannot be accurately measured.
In order to achieve the above object, an embodiment of the present invention provides a circuit for measuring an operating current of an arrester, which includes a rogowski coil, a multi-stage voltage limiting circuit, an integrating circuit, a rectifying circuit, a current limiting circuit, a voltage dividing circuit, and an amplifying circuit.
The multi-stage voltage limiting circuit comprises a first voltage limiting circuit, a second voltage limiting circuit and a third voltage limiting circuit.
The first voltage limiting circuit comprises a first piezoresistor, and the first piezoresistor is arranged at the output end of the Rogowski coil.
The integrating circuit comprises an integrating resistor, and the integrating resistor is arranged at the output end of the first voltage limiting circuit and is used for integrating the current differential signal output by the Rogowski coil to obtain a corresponding pulse voltage signal.
The second voltage limiting circuit comprises a second piezoresistor, and the second piezoresistor is arranged at the output end of the integrating circuit.
The rectifier circuit comprises a bridge rectifier circuit, and the bridge rectifier circuit is arranged at the output end of the second voltage limiting circuit and used for converting the pulse voltage signal into a unidirectional pulse voltage signal.
The third voltage limiting circuit comprises a TVS diode, and the TVS diode is arranged at the output end of the rectifying circuit.
The current limiting circuit comprises a first current limiting resistor, and the first current limiting resistor is arranged at the output end of the third voltage limiting circuit and is used for limiting the current of the unidirectional pulse voltage signal.
The voltage dividing circuit comprises a voltage dividing resistor, and the voltage dividing resistor is arranged at the output end of the current limiting circuit and is used for dividing the unidirectional pulse voltage signal after current limiting.
The amplifying circuit comprises a triode, the triode is arranged at the output end of the voltage division circuit and is used for carrying out corresponding level conversion on the unidirectional pulse voltage signal after voltage division so as to output a corresponding pulse signal and send the pulse signal to an external single chip microcomputer port.
As an improvement of the scheme, the number of turns of the Rogowski coil is 40-60 turns.
As an improvement of the scheme, the first piezoresistor is a piezoresistor with 390V-400V.
As an improvement of the scheme, the specification of the integral resistor is 5.1 omega/5W.
As an improvement of the above scheme, the integrated circuit further includes a second current limiting resistor, and the second current limiting resistor is disposed between the integrating circuit and the second voltage limiting circuit.
As an improvement of the scheme, the second piezoresistor is a piezoresistor of 33V-40V.
As an improvement of the above scheme, the bridge rectifier circuit includes a first rectifier diode, a second rectifier diode, a third rectifier diode and a fourth rectifier diode;
the positive pole of the first rectifier diode is connected with the negative pole of the second rectifier diode, the negative pole of the first rectifier diode is connected with the negative pole of the third rectifier diode, the positive pole of the third rectifier diode is connected with the negative pole of the fourth rectifier diode, and the positive pole of the fourth rectifier diode is connected with the positive pole of the second rectifier diode.
As an improvement of the scheme, the TVS diode is a 5V TVS tube.
As an improvement of the scheme, the specification of the first current limiting resistor is 2k omega/0.25W.
Another embodiment of the present invention provides a method for measuring an operating current of an arrester, including the steps of:
performing first voltage limiting on the action current circuit;
integrating the action current circuit after the first voltage limiting;
carrying out secondary voltage limiting on the integrated action current circuit;
rectifying the action current circuit after the second voltage limiting;
performing third voltage limiting on the rectified action current circuit;
limiting the current of the action current circuit after the third voltage limiting;
dividing the current-limited action current circuit;
and amplifying the divided operating current circuit.
The lightning arrester action current measuring circuit and the method thereof fully consider the problem that a voltage signal is overhigh under the action of a large current pulse, and by combining a plurality of stages of voltage limiting circuits and inserting the voltage limiting circuits of each stage into different positions of the whole action current measuring circuit in a penetrating way, the voltage limiting circuits of each stage can carry out corresponding limiting processing on the received voltage amplitude, and the condition that the whole electronic circuit is influenced by overhigh voltage amplitude can not occur; meanwhile, the whole action current measuring circuit combines each integrating circuit, the rectifying circuit, the current limiting circuit, the voltage dividing circuit and the amplifying circuit, so that the signals output from the Rogowski coil realize the ordered steps of integration, rectification, current limiting, voltage dividing and amplification, the signals are accurately processed, the functions of arrester action signal acquisition, amplitude limiting, polarity conversion, level conversion and the like are effectively realized, and the subsequent single chip microcomputer is ensured to receive correct trigger signals meeting requirements.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a flow structure of a lightning arrester operating current measuring circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit structure diagram of an arrester operating current measuring circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bridge rectifier circuit according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a method for measuring an operating current of an arrester according to an embodiment 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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In describing embodiments of the present invention, it should be noted that the invention may be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In addition, the invention is operational with numerous general purpose or special purpose computing device environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multi-processor apparatus, distributed computing environments that include any of the above devices or equipment, and the like.
In the description of the embodiments of the present invention, it is to be understood that the terms "first," "second," "third," and "fourth" are used merely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations or relative importance.
An embodiment of the present invention provides a circuit for measuring an operating current of an arrester, and particularly, please refer to fig. 1, which is a schematic flow structure diagram of the circuit for measuring an operating current of an arrester according to an embodiment of the present invention, wherein the circuit comprises a rogowski coil, a multi-stage voltage limiting circuit, an integrating circuit, a rectifying circuit, a current limiting circuit, a voltage dividing circuit, and an amplifying circuit.
In the embodiment, each stage of the three-stage voltage limiting circuit plays an important role, and the position of the multistage voltage limiting circuit in the whole action current measuring circuit is also very studied, so that the voltage amplitude of the circuit can be effectively limited.
Specifically, please refer to fig. 2, which is a schematic circuit diagram of a circuit structure of an arrester operating current measuring circuit according to an embodiment of the present invention, wherein the first voltage limiting circuit includes a first voltage dependent resistor Z1Said first varistor Z1And the output end of the Rogowski coil is arranged. The first voltage dependent resistor is used for clamping the voltage of the circuit in an overvoltage state so as to absorb redundant current to protect subsequent electronic circuits.
The integration circuit comprises an integration resistor R1Said integrating resistor R1Is arranged atAnd the output end of the first voltage limiting circuit is used for integrating the current differential signal output by the Rogowski coil to obtain a corresponding pulse voltage signal. It can be known from the above that, the rogowski coil and the integrating circuit jointly form a self-integrating state, an LR integrator is adopted, the inductor L of the coil itself and the integrating resistor connected to the coil port form the integrator, the coil works in a differential state, the output end of the coil is actually a differential signal of the measured current waveform, and the differential signal is processed by the integrator, so that a corresponding pulse voltage signal can be obtained, and the rogowski coil is proved to be more reliable in restoring the pulse current waveform.
The second voltage limiting circuit comprises a second piezoresistor Z2Said second varistor Z2And the output end of the integrating circuit is arranged. The circuit in an overvoltage state is clamped by the second voltage dependent resistor to absorb redundant current to protect subsequent electronic circuits.
The rectifier circuit comprises a bridge rectifier circuit, and the bridge rectifier circuit is arranged at the output end of the second voltage limiting circuit and used for converting the pulse voltage signal into a unidirectional pulse voltage signal.
The third voltage limiting circuit comprises a TVS diode, the TVS diode is arranged at the output end of the rectifying circuit and is different from the voltage dependent resistors adopted by the first voltage limiting circuit and the second voltage limiting circuit, and the TVS diode has the advantages that when two poles of the TVS diode are impacted by reverse transient high energy, the TVS diode can change the high impedance between the two poles into low impedance at the speed of 10 minus 12 times of a second magnitude, absorb surge power of thousands of watts and clamp the voltage between the two poles at a preset value, so that the action current measuring circuit is protected more effectively.
The current limiting circuit comprises a first current limiting resistor R3The first current limiting resistor R3And the output end of the third voltage limiting circuit is used for limiting the current of the unidirectional pulse voltage signal.
The voltage division circuit comprises a voltage division resistor R4The voltage dividing resistor R4An output terminal arranged at the output terminal of the current limiting circuit for passing throughAnd dividing the voltage of the one-way pulse voltage signal after overcurrent limiting.
The amplifying circuit comprises a triode Q, the base of the triode Q is arranged at the output end of the voltage division circuit, and the emitter of the triode Q is connected with a resistor R in series5The collector of which is connected in series with a resistor R6After the signal is subjected to level change through the triode finally, a corresponding pulse signal U can be outputoutAnd the current is sent to an external single chip microcomputer port, so that the discharge counting function of the subsequent lightning arrester can be stably realized.
The lightning arrester action current measuring circuit provided by the embodiment of the invention fully considers the problem that a voltage signal is too high under the action of a large current pulse, and by combining a plurality of stages of voltage limiting circuits, each stage of voltage limiting circuit is inserted into different positions of the whole action current measuring circuit in a penetrating way, so that each stage of voltage limiting circuit can carry out corresponding limiting processing on a received voltage amplitude, and the condition that the whole electronic circuit is influenced by too high voltage amplitude can not occur; meanwhile, the whole action current measuring circuit combines each integrating circuit, the rectifying circuit, the current limiting circuit, the voltage dividing circuit and the amplifying circuit, so that the signals output from the Rogowski coil realize the ordered steps of integration, rectification, current limiting, voltage dividing and amplification, the signals are accurately processed, the functions of arrester action signal acquisition, amplitude limiting, polarity conversion, level conversion and the like are effectively realized, and the subsequent single chip microcomputer is ensured to receive correct trigger signals meeting requirements.
Preferably, in the above embodiment, the number of turns of the rogowski coil is 40 to 60 turns. In the invention, multiple experiments of the inventor show that when the Rogowski coil has 100 turns or more, the amplitude of the output voltage is relatively high, and the damage of overvoltage to a subsequent singlechip chip is easily caused. In the present embodiment, the number of turns of the coil may preferably be 40 turns, which not only meets the requirement of the lower limit of the current measurement of 50A, but also facilitates reducing the maximum voltage of the circuit.
Preferably, in the above embodiment, the first voltage-sensitive resistorResistance Z1The voltage dependent resistor is a voltage dependent resistor with a voltage of 390V-400V.
Preferably, in the above embodiment, the integrating resistor R1The specification of (2) is 5.1 omega/5W.
Preferably, in the above embodiment, a second current limiting resistor R is further included2The second current limiting resistor R2And the second voltage limiting circuit is arranged between the integrating circuit and the second voltage limiting circuit. In this embodiment, the second current limiting resistor can better limit the current of the circuit signal, and the specification of the second current limiting resistor is preferably 510 Ω/3W.
Preferably, in the above embodiment, the second varistor Z2The voltage dependent resistor is a voltage dependent resistor of 33V-40V.
Preferably, in the above embodiment, the bridge rectifier circuit includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3 and a fourth rectifier diode D4;
specifically, referring to fig. 3, a schematic structural diagram of a bridge rectifier circuit according to an embodiment of the present invention is shown, wherein an anode of the first rectifier diode D1 is connected to a cathode of the second rectifier diode D2, a cathode of the first rectifier diode D1 is connected to a cathode of the third rectifier diode D3, an anode of the third rectifier diode D3 is connected to a cathode of the fourth rectifier diode D4, and an anode of the fourth rectifier diode D4 is connected to an anode of the second rectifier diode D2. During the positive half-wave period of the power supply, the first rectifying diode is conducted with the fourth rectifying diode; and in the negative half-wave period of the power supply, the third rectifier diode is conducted with the second rectifier diode, and under the synergistic action of the four rectifier diodes, the circuit can realize better rectification and has high rectification efficiency and good stability.
Preferably, in the above embodiment, the TVS diode is a TVS transistor of 5V to ensure that the signal entering the single chip microcomputer meets the requirement.
Preferably, in the above embodiment, the first current limiting resistor R3The specification of (2 k) omega/0.25W.
Another embodiment of the present invention provides a method for measuring an operating current of an arrester, and specifically, please refer to fig. 4, which is a schematic flow chart of the method for measuring an operating current of an arrester according to the embodiment of the present invention, and the method specifically includes the following steps:
s101, performing first voltage limiting on an action current circuit;
s102, integrating the action current circuit subjected to the first voltage limiting;
s103, carrying out secondary voltage limiting on the integrated action current circuit;
s104, rectifying the action current circuit subjected to the second voltage limiting;
s105, performing third voltage limiting on the rectified action current circuit;
s106, limiting the current of the action current circuit subjected to the third voltage limiting;
s107, dividing the current-limited action current circuit;
and S108, amplifying the divided operating current circuit.
The lightning arrester action current measuring circuit and the method provided by the embodiment of the invention fully consider the problem that a voltage signal is too high under the action of a large current pulse, and through combining a plurality of stages of voltage limiting circuits, each stage of voltage limiting circuit is inserted in different positions of the whole action current measuring circuit in a penetrating way, so that each stage of voltage limiting circuit can carry out corresponding limiting processing on a received voltage amplitude, and the condition that the whole electronic circuit is influenced by too high voltage amplitude can not occur; meanwhile, the whole action current measuring circuit combines each integrating circuit, the rectifying circuit, the current limiting circuit, the voltage dividing circuit and the amplifying circuit, so that the signals output from the Rogowski coil realize the ordered steps of integration, rectification, current limiting, voltage dividing and amplification, the signals are accurately processed, the functions of arrester action signal acquisition, amplitude limiting, polarity conversion, level conversion and the like are effectively realized, and the subsequent single chip microcomputer is ensured to receive correct trigger signals meeting requirements.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (10)
1. An arrester operating current measuring circuit, comprising: the power supply comprises a Rogowski coil, a multi-stage voltage limiting circuit, an integrating circuit, a rectifying circuit, a current limiting circuit, a voltage dividing circuit and an amplifying circuit;
the multistage voltage limiting circuit comprises a first voltage limiting circuit, a second voltage limiting circuit and a third voltage limiting circuit;
the first voltage limiting circuit comprises a first piezoresistor, and the first piezoresistor is arranged at the output end of the Rogowski coil;
the integrating circuit comprises an integrating resistor, and the integrating resistor is arranged at the output end of the first voltage limiting circuit and is used for integrating the current differential signal output by the Rogowski coil to obtain a corresponding pulse voltage signal;
the second voltage limiting circuit comprises a second piezoresistor, and the second piezoresistor is arranged at the output end of the integrating circuit;
the rectifier circuit comprises a bridge rectifier circuit, and the bridge rectifier circuit is arranged at the output end of the second voltage limiting circuit and used for converting the pulse voltage signal into a unidirectional pulse voltage signal;
the third voltage limiting circuit comprises a TVS diode, and the TVS diode is arranged at the output end of the rectifying circuit;
the current limiting circuit comprises a first current limiting resistor, and the first current limiting resistor is arranged at the output end of the third voltage limiting circuit and is used for limiting the current of the unidirectional pulse voltage signal;
the voltage division circuit comprises a voltage division resistor, and the voltage division resistor is arranged at the output end of the current limiting circuit and is used for dividing the current-limited unidirectional pulse voltage signal;
the amplifying circuit comprises a triode, the triode is arranged at the output end of the voltage division circuit and is used for carrying out corresponding level conversion on the unidirectional pulse voltage signal after voltage division so as to output a corresponding pulse signal and send the pulse signal to an external single chip microcomputer port.
2. The arrester operating current measuring circuit according to claim 1, wherein the number of turns of the rogowski coil is 40 to 60 turns.
3. The arrester operating current measuring circuit of claim 1 wherein the first varistor is a varistor of 390V to 400V.
4. The arrester operating current measuring circuit according to claim 1, wherein the integral resistance is 5.1 Ω/5W in size.
5. The arrester action current measurement circuit of claim 1, further comprising a second current limiting resistor disposed between the integration circuit and the second voltage limiting circuit.
6. The arrester operating current measuring circuit according to claim 1, wherein the second varistor is a varistor of 33V to 40V.
7. The arrester operating current measuring circuit according to claim 1, wherein the bridge rectifier circuit includes a first rectifier diode, a second rectifier diode, a third rectifier diode, and a fourth rectifier diode;
the positive pole of the first rectifier diode is connected with the negative pole of the second rectifier diode, the negative pole of the first rectifier diode is connected with the negative pole of the third rectifier diode, the positive pole of the third rectifier diode is connected with the negative pole of the fourth rectifier diode, and the positive pole of the fourth rectifier diode is connected with the positive pole of the second rectifier diode.
8. The surge arrester operating current measuring circuit of claim 1, wherein the TVS diode is a 5V TVS tube.
9. The surge arrester operating current measuring circuit according to claim 1, wherein the first current limiting resistor has a size of 2k Ω/0.25W.
10. An arrester operating current measuring method is characterized by comprising the following steps:
performing first voltage limiting on the action current circuit;
integrating the action current circuit after the first voltage limiting;
carrying out secondary voltage limiting on the integrated action current circuit;
rectifying the action current circuit after the second voltage limiting;
performing third voltage limiting on the rectified action current circuit;
limiting the current of the action current circuit after the third voltage limiting;
dividing the current-limited action current circuit;
and amplifying the divided operating current circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010428820.6A CN111596113A (en) | 2020-05-19 | 2020-05-19 | Lightning arrester action current measuring circuit and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010428820.6A CN111596113A (en) | 2020-05-19 | 2020-05-19 | Lightning arrester action current measuring circuit and method |
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| CN111596113A true CN111596113A (en) | 2020-08-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205562653U (en) * | 2016-02-18 | 2016-09-07 | 四川中光防雷科技股份有限公司 | Current inducer |
| CN207007933U (en) * | 2017-06-20 | 2018-02-13 | 贵州电网有限责任公司电力科学研究院 | One kind is based on RFID passive type shaft tower lightning current monitoring devices |
| CN207212594U (en) * | 2017-06-29 | 2018-04-10 | 西安爱邦电磁技术有限责任公司 | A kind of wind power generation unit blade lightning current monitoring system |
| CN108169545A (en) * | 2018-02-27 | 2018-06-15 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
| CN209198531U (en) * | 2018-02-27 | 2019-08-02 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
| CN110954740A (en) * | 2020-02-24 | 2020-04-03 | 长沙润迅通信设备有限公司 | Recording method of lightning wave shape |
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2020
- 2020-05-19 CN CN202010428820.6A patent/CN111596113A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205562653U (en) * | 2016-02-18 | 2016-09-07 | 四川中光防雷科技股份有限公司 | Current inducer |
| CN207007933U (en) * | 2017-06-20 | 2018-02-13 | 贵州电网有限责任公司电力科学研究院 | One kind is based on RFID passive type shaft tower lightning current monitoring devices |
| CN207212594U (en) * | 2017-06-29 | 2018-04-10 | 西安爱邦电磁技术有限责任公司 | A kind of wind power generation unit blade lightning current monitoring system |
| CN108169545A (en) * | 2018-02-27 | 2018-06-15 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
| CN209198531U (en) * | 2018-02-27 | 2019-08-02 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
| CN110954740A (en) * | 2020-02-24 | 2020-04-03 | 长沙润迅通信设备有限公司 | Recording method of lightning wave shape |
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Application publication date: 20200828 |
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