CN110618342A - Cable identification device and method - Google Patents
Cable identification device and method Download PDFInfo
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- CN110618342A CN110618342A CN201910836079.4A CN201910836079A CN110618342A CN 110618342 A CN110618342 A CN 110618342A CN 201910836079 A CN201910836079 A CN 201910836079A CN 110618342 A CN110618342 A CN 110618342A
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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
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Abstract
The invention discloses a cable identification device and a method, wherein a transmitting host transmits a characteristic signal, a current mutual inductance clamp is used for coupling the characteristic signal to a target cable, a receiving coil couples the characteristic signal from the target cable, and the receiving host analyzes the characteristic signal to identify the target cable. According to the technical scheme, the current transformer clamp is used as a signal transmission element, a primary winding is wound on a magnetic core of the current transformer clamp, a cable to be identified is used as a secondary winding of the current transformer clamp, a periodic pulse signal with specified characteristics is injected into the primary winding of the current clamp, the periodic pulse signal is induced by the cable to be identified, and a secondary loop is formed through a ground layer of the cable to be identified. The induced secondary signals are identified through the receiving coil and the receiving host, so that the non-contact identification of the electrified cable is realized.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a cable identification device and a method.
Background
Characteristic cables need to be identified from a plurality of cables in the power cable construction and relocation processes, and the old cables are generally not marked effectively due to the complicated underground power grid, so that the positions of the heads and the tails of the cables are difficult to detect. In the prior art, the cable cannot be identified in a power failure state, and live detection has an electric shock risk.
Disclosure of Invention
The invention mainly aims to provide a cable identification device, aiming at identifying a cable under a charged body and improving the safety of cable identification.
In order to achieve the above purpose, the cable identification device provided by the invention comprises a transmitting host, a current mutual induction clamp, a receiving coil and a receiving host; wherein:
the transmitting host is used for transmitting the characteristic signal;
the current mutual inductance clamp is used for coupling the characteristic signal to the target cable;
the receiving coil is used for coupling out a characteristic signal from the target cable;
and the receiving host is used for analyzing the characteristic signal so as to identify the target cable.
Preferably, the transmitting host comprises a high voltage generating circuit and a pulse output circuit; the high voltage generating circuit is connected with the pulse output circuit, wherein:
the high-voltage generating circuit is used for generating a target voltage with a preset voltage amplitude;
and the pulse output circuit is used for generating a pulse signal with a preset duty ratio according to the target voltage.
Preferably, the high voltage generating circuit comprises a first triode, a first resistor, a second resistor, a third resistor, a first transformer, a first capacitor, a second capacitor, a third capacitor, a first diode and a second diode; the first transformer comprises a first primary coil, a second primary coil and a first secondary coil, wherein:
the first end of the first capacitor is connected with a direct current power supply, and the second end of the first capacitor is grounded; the base electrode of the first triode is connected with the second input end of the second primary coil through the first resistor, the collector electrode of the first triode is connected with the first input end of the first primary coil, and the emitter electrode of the first triode is grounded; the second input end of the first primary coil and the first input end of the second primary coil are both connected with the direct-current power supply;
the first output end of the first secondary coil is connected with the anode of the first diode, the cathode of the first diode is connected with the pulse output circuit, the anode of the second diode is grounded, and the cathode of the second diode is connected with the anode of the first diode; the first end of the second capacitor is connected with the cathode of the first diode, and the second end of the second capacitor is grounded through the third capacitor; a first end of the second resistor is connected with a cathode of the first diode, and a second end of the second resistor is grounded through the third resistor; the second output end of the first primary coil is connected with the second end of the second capacitor.
Preferably, the pulse output circuit comprises a fourth resistor, a fifth resistor, a sixth resistor, a third diode and a pulse chip; wherein:
a first end of the first fourth resistor receives an input charged trigger signal, a second end of the fourth resistor is connected with an anode of the third diode, and a cathode of the third diode is connected with a trigger end of the pulse chip; a first end of the fifth resistor is connected with a second end of the fourth resistor, and the second end of the fifth resistor is grounded; the output end of the pulse chip is connected with the first end of the sixth resistor, and the second end of the sixth resistor is grounded; and the input end of the pulse chip is connected with the high-voltage generating circuit.
Preferably, the pulse output circuit further includes a fourth diode; and the anode of the fourth diode is grounded, and the cathode of the fourth diode is connected with the first end of the sixth resistor.
Preferably, the receiving host comprises a signal sampling circuit and a microcontroller; wherein:
the signal sampling circuit is used for sampling the pulse signal to obtain a sampling signal;
and the microcontroller is used for analyzing the sampling signal, acquiring the voltage polarity and the duty ratio of the sampling signal, and judging whether the sampling signal is a characteristic signal sent by the emission host according to the voltage polarity and the duty ratio so as to identify the target cable.
Preferably, the receiver host further includes a gain circuit, and the gain circuit is configured to amplify the sampling signal and output the amplified sampling signal to the microcontroller.
Preferably, the microcontroller samples a single chip microcomputer.
In order to achieve the above object, the present invention further provides a cable identification method, including the following steps:
the transmitting host transmits the characteristic signal;
the current mutual inductance clamp couples the characteristic signal to the target cable;
a receiving coil couples out a characteristic signal from the target cable;
and the receiving host analyzes the characteristic signal to identify the target cable.
Preferably, the receiving host includes a signal sampling circuit and a microcontroller, and the receiving host analyzes the characteristic signal to identify the target cable, including:
the signal sampling circuit samples the pulse signal to obtain a sampling signal;
and the microcontroller analyzes the sampling signal, acquires the voltage polarity and the duty ratio of the sampling signal, and judges whether the sampling signal is a characteristic signal sent by the emission host according to the voltage polarity and the duty ratio so as to identify the target cable.
According to the technical scheme, the cable identification device is formed by arranging the transmitting host, the current transformer clamp, the receiving coil and the receiving host. The transmitting host transmits a characteristic signal, the current transformer clamp is used for coupling the characteristic signal to a target cable, the receiving coil couples the characteristic signal out of the target cable, and the receiving host analyzes the characteristic signal to identify the target cable. The technical scheme of the invention is that a current mutual inductance clamp is used as a signal transmission element, a primary winding is wound on a magnetic core of the current mutual inductance clamp, a cable to be identified is used as a secondary winding of the current mutual inductance clamp, a periodic pulse signal with specified characteristics is injected into the primary winding of the current clamp, the periodic pulse signal is induced by the cable to be identified, and a secondary loop is formed by a grounding layer of the cable to be identified. The induced secondary signals are identified through the receiving coil and the receiving host, so that the non-contact identification of the electrified cable is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a cable identification device according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a high voltage generation circuit in the cable identification device;
FIG. 3 is a schematic diagram of an embodiment of a pulse output circuit in the cable identification device;
FIG. 4 is a schematic structural diagram of an embodiment of the current transformer clamp of the present invention;
FIG. 5 is a schematic block diagram of a further embodiment of the present subject matter;
fig. 6 is a schematic structural diagram of a second embodiment of the present subject matter.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Emission host | D.T12 | Second diode |
| 20 | Current mutual inductance clamp | C.T11 | Second capacitor |
| 30 | Receiving coil | C.T12 | Third capacitor |
| 40 | Receiving host | R.T11 | Second resistance |
| R.Q11 | A first resistor | R.T12 | Third resistance |
| C.Q11 | First capacitor | R.Q31 | Fourth resistor |
| T1 | First transformer | R.Q32 | Fifth resistor |
| D.T11 | First diode | D.Q31 | Third diode |
| Q3 | Pulse chip | R.PU1 | Sixth resistor |
| D.PU1 | Fourth diode | Q1 | A first triode |
The implementation, functional features and advantages of the objects of the present invention will be further described with reference to the accompanying drawings.
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.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not to be within the protection scope of the present invention.
The invention provides a cable identification device.
Referring to fig. 1, in the embodiment of the present invention, the cable identification apparatus includes a transmitting host 10, a current transformer 20, a receiving coil 30, and a receiving host 40.
The transmitting host 10 is used for transmitting the characteristic signal. In this embodiment, the transmitting host 10 sends a pulse signal with positive voltage polarity, a preset voltage amplitude and a preset duty cycle.
The current transformer clamp 20 is used for coupling the characteristic signal to the target cable. The current transformer clamp 20 injects a characteristic signal into the cable to be targeted.
The receiving coil 30 is used for coupling out the characteristic signal from the target cable. The receiver coil 30 induces a characteristic signal from the target cable and outputs the characteristic signal to the receiver host 40.
The receiving host 40 is configured to analyze the characteristic signal to identify the target cable.
The transmitting host 10 couples a periodic pulse signal with specified characteristics into a live cable to be measured through the connected current mutual inductance clamp 20, and flows into a grounding pile through a shielding layer of the live target cable to form a loop. The pulse signal consistent with the characteristics of the transmitted signal is detected by the receiving coil 30 and the connected receiving host 40, and the signal is the target cable to be identified, and if no signal or irregular signals such as polarity reversal, preset duty ratio, unstable voltage amplitude and the like exist, the signal is not the target cable to be identified.
The technical scheme of the invention forms a cable identification device by arranging the transmitting host 10, the current mutual inductance clamp 20, the receiving coil 30 and the receiving host 40. The transmitting host 10 transmits a characteristic signal, the current transformer clamp 20 is used for coupling the characteristic signal to a target cable, the receiving coil 30 couples the characteristic signal from the target cable, and the receiving host 40 analyzes the characteristic signal to identify the target cable. According to the technical scheme, the current mutual inductance clamp 20 is used as a signal transmission element, a primary winding is wound on a magnetic core of the current mutual inductance clamp 20, a cable to be identified is used as a secondary winding of the current mutual inductance clamp 20, a periodic pulse signal with specified characteristics is injected into the primary winding of the current clamp, the periodic pulse signal is induced by the cable to be identified, and a secondary loop is formed through a ground layer of the cable to be identified. The induced secondary signal is identified by the receiving coil 30 and the receiving host 40, so that the non-contact identification of the charged cable is realized.
Specifically, the transmitter main unit 10 includes a high voltage generating circuit and a pulse output circuit; the high voltage generating circuit is connected with the pulse output circuit, wherein:
the high-voltage generating circuit is used for generating a target voltage with a preset voltage amplitude; and the pulse output circuit is used for generating a pulse signal with a preset duty ratio according to the target voltage.
It should be noted that the high voltage generating circuit provides the required power source for the pulse output circuit, the pulse output circuit outputs the pulse signal with the preset duty ratio, and the voltage amplitude and the voltage polarity of the pulse signal are also preset.
Referring to fig. 2, further, the high voltage generating circuit includes a first transistor Q1, a first resistor r.q11, a second resistor r.t11, a third resistor r.t12, a first transformer T1, a first capacitor c.q11, a second capacitor c.t11, a third capacitor c.t12, a first diode d.t11, and a second diode d.t 12; the first transformer T1 includes a first primary coil, a second primary coil, and a first secondary coil, wherein:
a first end of the first capacitor c.q11 is connected with a direct current power supply VCC, and a second end of the first capacitor c.q11 is grounded; the base of the first triode Q1 is connected with the second input end of the second primary coil through the first resistor r.q11, the collector of the first triode Q1 is connected with the first input end of the first primary coil, and the emitter of the first triode Q1 is grounded; the second input end of the first primary coil and the first input end of the second primary coil are both connected with the direct-current power supply VCC;
the first output end of the first secondary coil is connected with the anode of the first diode D.T11, the cathode of the first diode D.T11 is connected with the pulse output circuit, the anode of the second diode D.T12 is grounded, and the cathode of the second diode D.T12 is connected with the anode of the first diode D.T 11; a first end of the second capacitor c.t11 is connected with a cathode of the first diode d.t11, and a second end of the second capacitor c.t11 is grounded through the third capacitor c.t 12; a first end of the second resistor r.t11 is connected to a cathode of the first diode d.t11, and a second end of the second resistor r.t11 is grounded via the third resistor r.t 12; a second output terminal of the first primary coil is connected with a second terminal of the second capacitor c.t 11.
It should be noted that since the output pulse signal is an intermittent pulse signal and the requirement for continuous power supply from the power supply is not high, the high-voltage output element employs electrolytic capacitors c.t11 and c.t12 having high withstand voltage and high capacity. T1 is a step-up transformer, the primary winding of T1 and transistor Q1 form an oscillating circuit, the secondary winding of T1 outputs alternating high voltage, and the output voltage of T1 is doubled by a voltage doubling circuit formed by d.t11, d.t12, c.t11 and c.t 12. The base and collector currents of the Q1 can be adjusted by adjusting the R.Q11, and the charging currents of the C.T11 and the C.T12 are controlled, so that the time for the capacitors C.T11 and C.T12 to be charged to reach the preset voltage amplitude is controlled, and the R.T11 and R.T12 are pulse voltage sampling resistors and are provided for the singlechip AD for sampling after voltage division.
Referring to fig. 3, the pulse output circuit includes a fourth resistor r.q31, a fifth resistor r.q32, a sixth resistor r.pu1, a third diode d.q31, and a pulse chip Q3; wherein:
a first end of the fourth resistor r.q31 receives an input charged trigger signal, a second end of the fourth resistor r.q31 is connected with an anode of the third diode d.q31, and a cathode of the third diode d.q31 is connected with a trigger end of the pulse chip Q3; a first end of the fifth resistor r.q32 is connected to a second end of the fourth resistor r.q31, and a second end of the fifth resistor r.q32 is grounded; the output end of the pulse chip Q3 is connected with the first end of the sixth resistor r.pu1, and the second end of the sixth resistor r.pu1 is grounded; the input end of the pulse chip Q3 is connected with the high-voltage generating circuit. Further the pulse output circuit further comprises a fourth diode d.pu 1; the anode of the fourth diode d.pu1 is grounded, and the cathode of the fourth diode d.pu1 is connected to the first end of the sixth resistor r.pu 1.
Q3 is the main control element of pulse output, when pin 3 of Q3 is high level, high voltage of pin 2 flows into pin 1, flows into current caliper through h.pulse +, when the electric quantity stored in capacitors c.t11, c.t12 in fig. 3 is exhausted, the discharging is stopped, and pin 2 and pin 3 of Q3 become high impedance state. The diode D.PU1 is used for follow current protection of the caliper, absorbs reverse electromotive force of the caliper and protects a control loop, the R.PU1 is a discharge protection resistor and is used as a discharge path of C.T11 and C.T12 in the figure 3 under the condition that an output loop is open, the D.Q31 is a control end protection diode and prevents high voltage controlled by Q3 from reversely flowing into the R.Q31 to damage low-voltage elements such as a single chip microcomputer and the like, the R.Q32 is a pull-down resistor of the control end to ensure that when a high level is not injected into an electrified trigger port, a pin 3 of the Q3 is always kept at a low level and does not trigger the Q3 to discharge, and the R.Q31 is a current limiting resistor and provides proper trigger current for the Q3.
Referring to fig. 4, in order to couple the pulse signal transmitted by the transmitting host 10 to the cable to be identified by an indirect method, it is necessary to ensure that the coupled secondary signal has a certain current intensity, the resistance R in the secondary loop is relatively fixed, and in order to obtain a larger current, it is necessary to satisfy that the voltage U2 of the secondary load is large enough to make the signal more easily obtained by the receiving coil 30. According to the current transformation principle, the following results are obtained:
wherein I1: primary current of
I2: secondary current flow
N1: number of turns of primary winding
N2: number of turns of secondary winding
Since N2 is a live cable and the number of turns through the current transformer clamp 20 is fixed at 1 turn, if I2 is required to be large enough, the turn ratio must be made as small as possible, and it is appropriate to take N2 to be 10 turns to 30 turns according to practical tests.
Specifically, the receiving host 40 includes a signal sampling circuit and a microcontroller; wherein:
the signal sampling circuit is used for sampling the pulse signal to obtain a sampling signal;
and the microcontroller is used for analyzing the sampling signal, acquiring the voltage polarity and the duty ratio of the sampling signal, and judging whether the sampling signal is a characteristic signal sent by the emission host 10 according to the voltage polarity and the duty ratio so as to identify the target cable.
Further, the receiver host 40 further includes a gain circuit, and the gain circuit is configured to amplify the sampling signal and output the amplified sampling signal to the microcontroller. In this embodiment, the microcontroller samples a single chip microcomputer.
The transmitting host 10, the current transformer 20, the receiving host 40, the receiving coil 30 and the electrified cable to be identified are connected in the same manner as the figure I, and when the polarity and the time interval of the signal voltage displayed by the liquid crystal of the receiving host 40 are consistent with the transmitting signal, the electrified cable to be identified can be judged.
With reference to fig. 5, in order to achieve the above object, the present invention further provides a cable identification method, including the following steps:
step S10: the transmitting host transmits the characteristic signal; in this embodiment, the transmitting host sends a pulse signal with a positive voltage polarity, a preset voltage amplitude and a preset duty ratio.
Step S20: the current mutual inductance clamp couples the characteristic signal to the target cable; the current transformer clamp injects a characteristic signal into a cable to be targeted.
Step S30: a receiving coil couples out a characteristic signal from the target cable; the receiving coil induces a characteristic signal from the target cable and outputs the characteristic signal to the receiving host.
Step S40: and the receiving host analyzes the characteristic signal to identify the target cable.
It should be noted that, the transmitting host couples a periodic pulse signal with specified characteristics to the live cable to be measured through the connected current transformer clamp, and flows into the grounding pile through the shielding layer of the live target cable to form a loop. The pulse signal consistent with the characteristics of the transmitted signal is detected by the receiving coil and the connected receiving host machine, and the pulse signal is the target cable to be identified, and if no signal exists or the signals with irregular polarity, preset duty ratio, unstable voltage amplitude and the like are not the target cable to be identified.
Referring to fig. 6, the receiving host includes a signal sampling circuit and a microcontroller, and the receiving host analyzes the characteristic signal to identify the target cable, including:
step S401: the signal sampling circuit samples the pulse signal to obtain a sampling signal;
step S402: and the microcontroller analyzes the sampling signal, acquires the voltage polarity and the duty ratio of the sampling signal, and judges whether the sampling signal is a characteristic signal sent by the emission host according to the voltage polarity and the duty ratio so as to identify the target cable.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A cable identification device is characterized by comprising a transmitting host, a current transformer clamp, a receiving coil and a receiving host; wherein:
the transmitting host is used for transmitting the characteristic signal;
the current mutual inductance clamp is used for coupling the characteristic signal to the target cable;
the receiving coil is used for coupling out a characteristic signal from the target cable;
and the receiving host is used for analyzing the characteristic signal so as to identify the target cable.
2. The cable identification device of claim 1, wherein the transmitter host comprises a high voltage generating circuit and a pulse output circuit; the high voltage generating circuit is connected with the pulse output circuit, wherein:
the high-voltage generating circuit is used for generating a target voltage with a preset voltage amplitude;
and the pulse output circuit is used for generating a pulse signal with a preset duty ratio according to the target voltage.
3. The cable identification device of claim 2, wherein the high voltage generating circuit comprises a first transistor, a first resistor, a second resistor, a third resistor, a first transformer, a first capacitor, a second capacitor, a third capacitor, a first diode, and a second diode; the first transformer comprises a first primary coil, a second primary coil and a first secondary coil, wherein:
the first end of the first capacitor is connected with a direct current power supply, and the second end of the first capacitor is grounded; the base electrode of the first triode is connected with the second input end of the second primary coil through the first resistor, the collector electrode of the first triode is connected with the first input end of the first primary coil, and the emitter electrode of the first triode is grounded; the second input end of the first primary coil and the first input end of the second primary coil are both connected with the direct-current power supply;
the first output end of the first secondary coil is connected with the anode of the first diode, the cathode of the first diode is connected with the pulse output circuit, the anode of the second diode is grounded, and the cathode of the second diode is connected with the anode of the first diode; the first end of the second capacitor is connected with the cathode of the first diode, and the second end of the second capacitor is grounded through the third capacitor; the first end of the second resistor is connected with the cathode of the first diode, and the second end of the second resistor is grounded through the third resistor; the second output end of the first primary coil is connected with the second end of the second capacitor.
4. The cable identification device of claim 2, wherein the pulse output circuit comprises a fourth resistor, a fifth resistor, a sixth resistor, a third diode, and a pulse chip; wherein:
a first end of the first fourth resistor receives an input charged trigger signal, a second end of the fourth resistor is connected with an anode of the third diode, and a cathode of the third diode is connected with a trigger end of the pulse chip; a first end of the fifth resistor is connected with a second end of the fourth resistor, and the second end of the fifth resistor is grounded; the output end of the pulse chip is connected with the first end of the sixth resistor, and the second end of the sixth resistor is grounded; and the input end of the pulse chip is connected with the high-voltage generating circuit.
5. The cable identification device of claim 4 wherein the pulse output circuit further comprises a fourth diode; and the anode of the fourth diode is grounded, and the cathode of the fourth diode is connected with the first end of the sixth resistor.
6. The cable identification device of claim 2, wherein the receiving host comprises a signal sampling circuit and a microcontroller; wherein:
the signal sampling circuit is used for sampling the pulse signal to obtain a sampling signal;
and the microcontroller is used for analyzing the sampling signal, acquiring the voltage polarity and the duty ratio of the sampling signal, and judging whether the sampling signal is a characteristic signal sent by the emission host according to the voltage polarity and the duty ratio so as to identify the target cable.
7. The cable identification device of claim 6, wherein the receiver host further comprises a gain circuit for amplifying the sampled signal and outputting the amplified sampled signal to the microcontroller.
8. The cable identification device of claim 6 wherein the microcontroller samples a single-chip microcomputer.
9. A method of cable identification, the method comprising the steps of:
the transmitting host transmits the characteristic signal;
the current mutual inductance clamp couples the characteristic signal to the target cable;
a receiving coil couples out a characteristic signal from the target cable;
and the receiving host analyzes the characteristic signal to identify the target cable.
10. The cable identification method of claim 9, wherein the receiving host includes a signal sampling circuit and a microcontroller, wherein the receiving host parses the signature signal to identify the target cable, comprising:
the signal sampling circuit samples the pulse signal to obtain a sampling signal;
and the microcontroller analyzes the sampling signal, acquires the voltage polarity and the duty ratio of the sampling signal, and judges whether the sampling signal is a characteristic signal sent by the emission host according to the voltage polarity and the duty ratio so as to identify the target cable.
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| CN201910836079.4A CN110618342A (en) | 2019-09-04 | 2019-09-04 | Cable identification device and method |
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|---|---|---|---|---|
| CN113049989A (en) * | 2021-03-24 | 2021-06-29 | 中国长江电力股份有限公司 | Electrified line checking instrument and line checking method for direct-current cable |
| CN113933753A (en) * | 2021-09-19 | 2022-01-14 | 国网江苏省电力有限公司检修分公司 | Device for distinguishing secondary circuit of transformer substation and identifying cable |
| CN116660640A (en) * | 2023-03-14 | 2023-08-29 | 国网江苏省电力有限公司淮安供电分公司 | Cable line positioning device and checking method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09218238A (en) * | 1996-02-09 | 1997-08-19 | Mitsubishi Heavy Ind Ltd | Apparatus for finding hot wire line |
| CN1987493A (en) * | 2005-12-19 | 2007-06-27 | 北京诺斯卡科技有限公司 | Cable identifying method and cable identifying instrument |
| CN102331545A (en) * | 2011-08-30 | 2012-01-25 | 湖州电力局 | Method for realizing online cable identification by injecting asymmetric square signal |
| CN102735994A (en) * | 2012-07-10 | 2012-10-17 | 浙江图维电力科技有限公司 | Method and device for inputting or detecting non-contact signals based on capacitor sensing |
| CN204302421U (en) * | 2014-12-31 | 2015-04-29 | 武汉大学 | A kind of cable identifier |
| CN206863122U (en) * | 2017-04-20 | 2018-01-09 | 国网辽宁省电力有限公司抚顺供电公司 | Phase angle cable identifier |
| CN109031426A (en) * | 2018-07-31 | 2018-12-18 | 广东电网有限责任公司 | A kind of high-tension cable electrification path detection circuit and detection method |
| CN109444673A (en) * | 2018-12-28 | 2019-03-08 | 广州广电计量检测股份有限公司 | A kind of bunch of cables injection conducted susceptibility test macro and method |
| CN109884477A (en) * | 2019-03-08 | 2019-06-14 | 武汉鸿志高测电气技术有限公司 | Identify the instrument and method of power cable |
-
2019
- 2019-09-04 CN CN201910836079.4A patent/CN110618342A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09218238A (en) * | 1996-02-09 | 1997-08-19 | Mitsubishi Heavy Ind Ltd | Apparatus for finding hot wire line |
| CN1987493A (en) * | 2005-12-19 | 2007-06-27 | 北京诺斯卡科技有限公司 | Cable identifying method and cable identifying instrument |
| CN102331545A (en) * | 2011-08-30 | 2012-01-25 | 湖州电力局 | Method for realizing online cable identification by injecting asymmetric square signal |
| CN102735994A (en) * | 2012-07-10 | 2012-10-17 | 浙江图维电力科技有限公司 | Method and device for inputting or detecting non-contact signals based on capacitor sensing |
| CN204302421U (en) * | 2014-12-31 | 2015-04-29 | 武汉大学 | A kind of cable identifier |
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