CN113189440A - Lead sealing communication detection device and method based on signal coupling technology - Google Patents
Lead sealing communication detection device and method based on signal coupling technology Download PDFInfo
- Publication number
- CN113189440A CN113189440A CN202110258036.XA CN202110258036A CN113189440A CN 113189440 A CN113189440 A CN 113189440A CN 202110258036 A CN202110258036 A CN 202110258036A CN 113189440 A CN113189440 A CN 113189440A
- Authority
- CN
- China
- Prior art keywords
- signal
- unit
- detection
- lead sealing
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention relates to a lead sealing communication detection device and a method based on a signal coupling technology, wherein the detection device comprises a signal sending unit, a signal detection unit, a signal processing unit and a data transmission unit; the signal sending unit is arranged on a grounding cable of the high-voltage cable connector and injects a signal into an armored voltage layer of the high-voltage cable in a capacitance or electromagnetic coupling mode; the signal detection unit is arranged on the outer sheath of the high-voltage cable and detects signals in a capacitance or electromagnetic coupling mode; the signal processing unit and the data transmission unit are connected with the signal sending unit and the signal detection unit, the signal processing unit detects the signal intensity of the signal sent by the signal sending unit through the detection signal detection unit, judges signal attenuation and judges whether a communication fault exists in the cable, the communication fault is a cable lead sealing fracture, and the data transmission unit transmits fault information to the server, so that an on-line detection function can be realized.
Description
Technical Field
The invention relates to the technical field of high-voltage and automatic control equipment, in particular to a lead sealing communication detection device based on a signal coupling technology and a lead sealing communication detection method based on the signal coupling technology.
Background
At the high-voltage cable joint, the cable joint is linked with the outer sheath of the cable main body by adopting a lead-lined technology. Due to the influence of factors such as self-gravity of the cable, underground settlement, cable pulling and the like, the lead lining damage frequently occurs at the lead lining position of the cable. The damage of the lead lining causes water inflow of the cable joint, the circumfluence partial discharge of the cable outer sheath finally causes the damage of the cable joint, the explosion of the cable joint and the accident power failure, so that the life of people cannot be guaranteed, and a large amount of economy is lost.
The traditional detection of the damage of the lead-lined cable joint mainly comprises an eddy current inspection technology and an X-ray technology. According to the eddy current flaw detection technology, the outer sheath of the lead-lined part of the cable is provided with a layer of heat-shrinkable tube with the thickness of 5mm, and the lead-lined part of the cable is irregular in shape, so that the contact distance between an eddy current flaw detection probe and the lead-lined part of the cable is large, the distance change is large, and the height is uneven. This directly results in inaccurate detection and high false alarm rate of the eddy current flaw detection probe. And because the eddy current inspection technology needs the probe to move constantly, need not have the dead angle to detect around plumbous, this has also led to the eddy current inspection technology can not realize on-line measuring equipment, and it is more suitable only to adopt artifical inspection.
The X-ray technology has high detection cost, and generates unrecoverable aging effect on a rubber structure in the cable during working, thereby shortening the service life of the cable, and being not suitable for online detection.
Through research and practice of the technology for many years, the applicant can well detect whether the lead sealing position of the high-voltage cable is broken or not by coupling signals to the grounding cable of the high-voltage cable connector and detecting the signals at the outer sheath of the high-voltage cable. If the lead sealing position of the high-voltage cable is broken, the coupling signal cannot be transmitted to the high-voltage cable, and the signal cannot be detected at the outer sheath of the high-voltage cable. According to the principle and in order to improve the stability of the system, the applicant is successively added with a signal sending unit, a signal detection unit and a signal processing unit, the signal detection unit is used for detecting the signal intensity of the signal sent by the signal sending unit and the signal detection unit, and whether the cable has a communication fault is judged by judging the signal attenuation; the communication fault is usually a cable lead sealing fracture, and the fault is transmitted to the server through the data transmission unit, so that the online detection function is realized.
Disclosure of Invention
The invention aims to provide a lead sealing communication detection device based on a signal coupling technology and a lead sealing communication detection method based on the signal coupling technology, wherein a signal sending unit, a signal detection unit, a signal processing unit and a data transmission unit are arranged, and whether the lead sealing part of a high-voltage cable is broken or not can be well detected by coupling signals to a grounding cable of a high-voltage cable connector and detecting the signals at the outer sheath of the high-voltage cable; the detection device has simple and practical structure and simple and convenient detection method; the detection result uploads data to the server through the data transmission unit, and the online detection function is achieved.
In order to achieve the above object, the present invention adopts the following technical solutions.
The lead sealing communication detection device based on the signal coupling technology is used for detecting the damage of the lead lining of the cable at the joint of the copper shell of the cable joint and the cable armor; the detection device comprises a signal sending unit, a signal detection unit, a signal processing unit and a data transmission unit.
In the invention, a signal sending unit is arranged on a grounding cable of a high-voltage cable connector, and a signal is injected into an armored voltage layer of the high-voltage cable in a capacitance or electromagnetic coupling mode; the signal detection unit is arranged on the outer sheath of the high-voltage cable and detects signals in a capacitance or electromagnetic coupling mode; the signal processing unit and the data transmission unit are connected with the signal sending unit and the signal detection unit, the signal processing unit detects the signal intensity of the signal sent by the signal sending unit through the detection signal detection unit, judges signal attenuation and judges whether the cable has a communication fault, the communication fault is a cable lead sealing fracture, and fault information is transmitted to the server through the data transmission unit.
Preferably, the signal transmitting unit and the signal detecting unit may be installed oppositely to support a self-test function.
In any of the above technical solutions, preferably, the signal sending unit and the signal detecting unit are both provided with a carrier communication transmission module, and the signal sending unit and the signal detecting unit transmit a signal carrier digital signal to realize id identification of the signal sending unit by the signal detecting unit.
In any of the above technical solutions, preferably, the signal transmitting unit is provided with a coupling circuit and a filter, and the signal transmitting unit couples two or more signal frequencies.
In any of the above technical solutions, preferably, the signal processing unit is provided with a frequency attenuation judging module, the signal processing unit judges an attenuation ratio of two or more frequencies, and according to a characteristic that the capacitance passes through high frequency, when the high frequency attenuation is smaller than the low frequency attenuation, it is judged that the lead sealing fault is in a lap joint state.
In any of the above technical solutions, preferably, the signal processing unit determines the attenuation ratio of two or more frequencies, and the two preferred frequencies are 1kHz and 100 kHz.
The invention also provides a lead sealing communication detection method based on the signal coupling technology, which adopts the lead sealing communication detection device based on the signal coupling technology, and the lead sealing communication detection method based on the signal coupling technology comprises the following steps:
the signal transmitting unit couples a signal on a high-voltage cable joint grounding cable, and the signal detecting unit is arranged on a high-voltage cable armor; judging the link state of the lead sealing position of the high-voltage cable according to the strength of the signal detected by the signal detection unit; the signal sending unit is used for coupling two or more signal frequencies, the signal processing unit is used for judging the attenuation proportion of the two or more frequencies, and according to the characteristic that the capacitance passes through high frequency, when the attenuation of the high frequency is smaller than that of the low frequency, the lead sealing fault is judged to be in a lap joint state.
In any of the above technical solutions, preferably, the signal sending unit and the signal detecting unit carry digital signals, so that the signal detecting unit uniquely identifies the signal sending unit, and simultaneous detection of multiple joints of one cable is realized without detection errors.
In any of the above technical solutions, it is preferable that the signal sending unit is provided with a self-checking module, and the signal sending unit has a self-checking function to ensure a sending capability of a signal.
In any of the above technical solutions, it is preferable that the signal detection unit is provided with a self-checking module, and the signal detection unit has a self-checking function to ensure signal detection capability.
In any of the above technical solutions, it is preferable that the detection result uploads data to the server through the data transmission unit, so as to implement online detection.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the high-voltage cable joint grounding cable is coupled with signals, and the high-voltage cable outer sheath is used for detecting the signals, so that whether the high-voltage cable lead sealing part is broken or not can be well detected, if the high-voltage cable lead sealing part is broken, the coupled signals cannot be transmitted to the high-voltage cable, and the high-voltage cable outer sheath cannot detect the signals.
The invention is provided with a lead sealing communication detection device which is composed of a signal sending unit, a signal detection unit, a signal processing unit and a data transmission unit and is based on a signal coupling technology, the signal detection unit is used for detecting the signal intensity of signals sent by the signal sending unit and the signal detection unit, and whether a communication fault exists in a cable is judged by judging signal attenuation. The communication fault is usually a cable lead sealing fracture, and the fault is transmitted to the server through the data transmission unit, so that the online detection function is realized. The lead sealing communication detection device based on the signal coupling technology is simple and practical in structure, and the lead sealing communication detection method based on the signal coupling technology is simple and convenient; the detection result uploads data to the server through the data transmission unit, and the online detection function is achieved.
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, and 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 these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a preferred embodiment of a lead sealing connectivity detection device based on a signal coupling technology according to the present invention;
fig. 2 is a schematic diagram of a lead sealing breakage of the high-voltage cable according to the embodiment shown in fig. 1 of the lead sealing communication detection device based on the signal coupling technology;
fig. 3 is a schematic diagram of a contact surface formed by overlapping a copper shell of a cable and an armor of the cable when a lead seal is broken according to the embodiment of fig. 2 of the lead seal communication detection device based on the signal coupling technology.
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 view of the fact that the traditional detection technology for detecting the lead-lined damage of the cable joint is inaccurate, inconvenient and incapable of realizing online detection, the embodiment of the invention provides a lead sealing communication detection device based on a signal coupling technology and a lead sealing communication detection method based on the signal coupling technology, and whether the lead sealing position of the high-voltage cable is broken or not can be well detected by coupling signals to a grounding cable of the high-voltage cable joint and detecting the signals at the outer sheath of the high-voltage cable; the detection device has simple and practical structure and simple and convenient detection method; the detection result uploads data to the server through the data transmission unit, and the online detection function is achieved.
The structure and technical features of the lead sealing connection detection device based on the signal coupling technology and the implementation form of the lead sealing connection detection method based on the signal coupling technology are described below with reference to fig. 1 to 3.
The lead sealing communication detection device based on the signal coupling technology for detecting the damage of the lead lining of the cable at the joint of the copper shell of the cable joint and the armor of the cable mainly comprises a signal sending unit, a signal detection unit, a signal processing unit and a data transmission unit; the signal sending unit is arranged on a grounding cable of the high-voltage cable connector and injects a signal into an armored voltage layer of the high-voltage cable in a capacitance or electromagnetic coupling mode; the signal detection unit is arranged on the outer sheath of the high-voltage cable and detects signals in a capacitance or electromagnetic coupling mode; the signal processing unit and the data transmission unit are connected with the signal sending unit and the signal detection unit, the signal processing unit detects the signal intensity of the signal sent by the signal sending unit through the detection signal detection unit, judges signal attenuation and judges whether the cable has a communication fault, the communication fault is the breakage of a cable seal lead, and fault information is transmitted to the server through the data transmission unit.
In the lead sealing communication detection device based on the signal coupling technology, the signal sending unit and the signal detection unit can be installed in an opposite mode, and a self-checking function is supported.
In the lead sealing communication detection device based on the signal coupling technology, the signal sending unit and the signal detection unit are both provided with carrier communication transmission modules, and the signal sending unit and the signal detection unit transmit signal carrier digital signals, so that the signal detection unit identifies the id identifier of the signal sending unit.
In the lead sealing communication detection device based on the signal coupling technology, the signal sending unit is provided with the coupling circuit and the filter, and the signal sending unit is coupled with two or more signal frequencies.
In the lead sealing communication detection device based on the signal coupling technology, the signal processing unit is provided with the frequency attenuation judging module, the signal processing unit judges the attenuation proportion of two or more frequencies, and according to the characteristic of high frequency passing of the capacitor, when the high frequency attenuation is smaller than the low frequency attenuation, the lead sealing fault is judged to be in the lap joint state.
In the lead sealing communication detection device based on the signal coupling technology, the signal processing unit determines the attenuation ratio of two or more frequencies, preferably two frequencies of 1kHz and 100 kHz.
A lead sealing communication detection method based on a signal coupling technology is used for detecting the damage of a cable enamel at the joint of a cable joint copper shell and a cable armor, and mainly comprises the following steps: the signal transmitting unit couples a signal on a high-voltage cable joint grounding cable, and the signal detecting unit is arranged on a high-voltage cable armor; judging the link state of the lead sealing position of the high-voltage cable according to the strength of the signal detected by the signal detection unit; the signal sending unit is used for coupling two or more signal frequencies, the signal processing unit is used for judging the attenuation proportion of the two or more frequencies, and according to the characteristic that the capacitance passes through high frequency, when the attenuation of the high frequency is smaller than that of the low frequency, the lead sealing fault is judged to be in a lap joint state.
According to the detection method, the signal sending unit and the signal detection unit carry digital signals, so that the signal detection unit can uniquely identify the signal sending unit, and the simultaneous detection of a plurality of joints of one cable can be realized without detection errors.
In the detection method, the signal sending unit has a self-checking function and ensures the sending capability of the signal.
According to the detection method, the signal detection unit has a self-detection function, and the detection capability of the signal is ensured.
According to the detection method, the detection result is uploaded to the server through the data transmission unit, and online detection is achieved.
By adopting the lead sealing communication detection device and method based on the signal coupling technology, the damage of the cable enamel at the joint of the copper shell of the cable joint and the cable armor is detected, and whether the lead sealing part of the high-voltage cable is broken or not can be well detected by coupling signals to the grounding cable of the high-voltage cable joint and detecting the signals at the outer sheath of the high-voltage cable. The lead sealing communication detection device based on the signal coupling technology mainly comprises a signal sending unit, a signal detection unit, a signal processing unit and a data transmission unit; the signal sending unit is responsible for sending signals, the signals can be injected into a grounding cable of the high-voltage cable connector in a capacitive coupling mode or an electromagnetic coupling mode, and the grounding cable of the high-voltage cable connector belongs to a high-voltage cable armor layer and is directly communicated with the high-voltage cable armor layer through lead lining; the signal detection unit detects whether the high-voltage cable armor has an injected signal or not in a capacitive coupling mode or an electromagnetic coupling mode; the signal processing unit judges the lead sealing breakage accident of the high-voltage cable joint by comparing the good lead sealing performance of the high-voltage cable joint with the signal attenuation when the lead sealing breakage of the high-voltage cable joint occurs; the data transmission unit transmits the result to an upper computer platform (server) to realize the function of online detection.
As shown in figure 1, the high-voltage cable lead sealing device is characterized in that when the high-voltage cable lead sealing device is broken, the signal processing unit processes signal attenuation, as shown in figures 2 and 3, a copper cable shell and a high-voltage cable armor are overlapped to form a contact surface, the lead sealing is broken, the high-voltage cable armor and the copper shell are overlapped, contact resistance is increased at the moment, a capacitor surface is formed due to the fact that the cable and the copper shell are overlapped, the contact resistance is increased at the moment, most frequency signals are conducted from the capacitance of the overlapping surface, attenuation of low-frequency signals is large relative to high-frequency signals, and therefore it can be judged that a high-voltage cable lead sealing joint is in a broken overlapping state.
In specific implementation, because the high-voltage cable joint grounding cable is communicated with the high-voltage cable armor, the signal detection unit can be arranged on the high-voltage cable outer sheath, the signal transmission unit can be arranged on the high-voltage cable joint grounding cable, and the signal detection unit and the signal transmission unit can be arranged oppositely, so that the detection method and the detection result are not influenced.
In a specific implementation, in order to improve the reliability of a product, both the signal sending unit and the signal detecting unit have a self-checking function, and the method adopted may be as follows: the auxiliary signal detection unit is arranged beside the signal transmission unit to detect the transmission function of the signal transmission unit, the auxiliary signal transmission unit is arranged beside the signal detection unit to detect the detection function of the signal detection unit, the coil or the capacitor of the transmission unit is directly detected through the built-in inductance-capacitance detector of the signal transmission unit to judge whether the signal transmission unit is normal, and the coil or the capacitor of the detection unit is directly detected through the built-in inductance-capacitance detector of the signal detection unit to judge whether the signal detection unit is normal.
In the specific implementation, after the lead sealing of the high-voltage cable is broken, the high-voltage cable armor and the copper shell of the high-voltage cable are still in lap joint, at the moment, the contact resistance between the high-voltage cable armor and the grounding cable of the high-voltage cable connector is large, the lead sealing position of the high-voltage cable connector is heated, partial discharge is caused, the damage to the cable is large, in order to detect the lap joint fault after the lead sealing is broken, two signal transmission modes are adopted, and the mode of the attenuation degree of the two signals is compared, so that whether the lead sealing position of the high-voltage cable connector is in the lap joint fault or not is judged. Specifically, as shown in fig. 1 to 3, by using lead sealing fracture overlapping, a capacitor exists between the high-voltage cable armor and the copper shell of the cable joint, transmission impedances of signals with different frequencies to the capacitor are different, the lead sealing fractures, the high-voltage cable armor and the copper shell are overlapped, and at this time, the contact resistance is increased. Because the cable and the copper shell are lapped to form a capacitance surface, the contact resistance is increased at the moment, most frequency signals are conducted from the lapping surface capacitance, and the low-frequency signals are greatly attenuated relative to the high-frequency signals, so that the high-voltage cable lead sealing joint can be judged to be in a broken lapping state, and the two preferable frequencies are 1kHz and 100 kHz.
In addition, because a plurality of high-voltage cable joint lead sealing fault detection sensors need to be installed on one cable, interference exists between a plurality of signal sending units and a plurality of signal receiving units, in order to deal with the situation that a plurality of joints exist on one cable, the adopted method is to classify the id numbers of the signal sending units and then adopt a signal carrier mode, the signal sending units carry out carrier waves through the sending time or the sending time of sending and stopping sending, and the signal detection units can judge the source of a sent signal after the detected signals are processed by the signal processing unit, so that the method that the mutual work of a plurality of sensors on one cable is not interfered is realized, and the missing detection that the detection units detect the signals of other sending units and judge that the lead sealing of the high-voltage cable is still communicated is effectively prevented.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention; the above description is only for the specific embodiment of the present invention, and is not intended to limit the scope of the present invention; any modification, equivalent replacement, improvement and the like of the technical solution of the present invention by a person of ordinary skill in the art without departing from the design spirit of the present invention shall fall within the protection scope determined by the claims of the present invention.
Claims (10)
1. A lead sealing communication detection device based on a signal coupling technology is used for detecting damage of lead lining of a cable at the joint of a copper shell of a cable joint and cable armor, and is characterized by comprising a signal sending unit, a signal detection unit, a signal processing unit and a data transmission unit; the signal sending unit is arranged on a grounding cable of the high-voltage cable connector and injects a signal into an armored voltage layer of the high-voltage cable in a capacitance or electromagnetic coupling mode; the signal detection unit is arranged on the outer sheath of the high-voltage cable and detects signals in a capacitance or electromagnetic coupling mode; the signal processing unit and the data transmission unit are connected with the signal sending unit and the signal detection unit, and the signal processing unit detects the signal intensity of the signal sent by the signal sending unit through the detection signal detection unit, judges signal attenuation and judges whether the cable has a communication fault.
2. The lead sealing connection detection device based on the signal coupling technology as claimed in claim 1, wherein the signal sending unit and the signal detection unit are installed oppositely to support a self-checking function.
3. The device for detecting the lead sealing connection based on the signal coupling technology as claimed in claim 2, wherein the signal sending unit and the signal detecting unit are both provided with a carrier communication transmission module, and the signal sending unit and the signal detecting unit transmit signal carrier digital signals to realize the id identification of the signal sending unit by the signal detecting unit.
4. The device for detecting the lead sealing connection based on the signal coupling technology as claimed in claim 3, wherein the signal transmitting unit is provided with a coupling circuit and a filter, and the signal transmitting unit is coupled with two or more signal frequencies.
5. The apparatus according to claim 1, wherein the signal processing unit is provided with a frequency attenuation determination module, and the signal processing unit determines the attenuation ratio of two or more frequencies, and determines that the lead sealing fault is in the overlapping state when the attenuation of the high frequency is smaller than the attenuation of the low frequency according to the characteristic of the capacitance passing through the high frequency.
6. The device for detecting the lead sealing connection based on the signal coupling technology as claimed in claim 5, wherein the signal processing unit judges the attenuation ratio of two or more frequencies, preferably two frequencies are 1kHz and 100 kHz.
7. A lead sealing connection detection method based on a signal coupling technology, which adopts the lead sealing connection detection device based on the signal coupling technology as claimed in any one of claims 1 to 6, and is characterized in that the method comprises the following steps: the signal transmitting unit couples a signal on a high-voltage cable joint grounding cable, and the signal detecting unit is arranged on a high-voltage cable armor; judging the link state of the lead sealing position of the high-voltage cable according to the strength of the signal detected by the signal detection unit; the signal sending unit is used for coupling two or more signal frequencies, the signal processing unit is used for judging the attenuation proportion of the two or more frequencies, and according to the characteristic that the capacitance passes through high frequency, when the attenuation of the high frequency is smaller than that of the low frequency, the lead sealing fault is judged to be in a lap joint state.
8. The method for detecting the lead sealing connection based on the signal coupling technology as claimed in claim 7, wherein the signal transmitting unit and the signal detecting unit carry digital signals, so that the signal detecting unit can uniquely identify the signal transmitting unit, and the simultaneous detection of a plurality of joints of one cable can be realized without detecting errors.
9. The method for detecting the lead sealing communication based on the signal coupling technology as claimed in claim 8, wherein the signal sending unit is provided with a self-checking module, and has a self-checking function to ensure the sending capability of the signal; the signal detection unit is provided with a self-checking module, has a self-checking function and ensures the detection capability of signals.
10. The method for detecting the lead sealing communication based on the signal coupling technology as claimed in claim 9, wherein the lead sealing communication detection result based on the signal coupling technology uploads data to the server through the data transmission unit to realize online detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110258036.XA CN113189440B (en) | 2021-03-09 | 2021-03-09 | Lead sealing communication detection device and method based on signal coupling technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110258036.XA CN113189440B (en) | 2021-03-09 | 2021-03-09 | Lead sealing communication detection device and method based on signal coupling technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113189440A true CN113189440A (en) | 2021-07-30 |
| CN113189440B CN113189440B (en) | 2022-10-18 |
Family
ID=76973156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110258036.XA Active CN113189440B (en) | 2021-03-09 | 2021-03-09 | Lead sealing communication detection device and method based on signal coupling technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113189440B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848246A (en) * | 2021-08-16 | 2021-12-28 | 浙江图维科技股份有限公司 | Online detection system and method for lead-lined cracking of cable accessory |
| CN114113892A (en) * | 2021-11-24 | 2022-03-01 | 浙江新图维电子科技有限公司 | Cable joint lead sealing detection device and method |
| CN115144791A (en) * | 2022-09-06 | 2022-10-04 | 浙江新图维电子科技有限公司 | Method and system for online detection of high-voltage cable armor grounding state |
| CN115877123A (en) * | 2022-11-24 | 2023-03-31 | 国网山东省电力公司电力科学研究院 | Method and system for evaluating sealing connection condition of tail pipe of high-voltage cable terminal |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001194410A (en) * | 1999-07-21 | 2001-07-19 | Sumitomo Electric Ind Ltd | Partial discharge measurement method for direct embedded power cable |
| 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 |
| 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 |
| CN103337119A (en) * | 2013-06-08 | 2013-10-02 | 山东康威通信技术股份有限公司 | Burglary-resisting monitoring and positioning method for armored cable |
| CN203249988U (en) * | 2013-01-25 | 2013-10-23 | 北京飞举电气有限公司 | Power cable antitheft broken line positioning device |
| CN103646488A (en) * | 2013-11-21 | 2014-03-19 | 广东电网公司惠州供电局 | An armored cable monitoring system and a method |
| CN104502876A (en) * | 2014-12-12 | 2015-04-08 | 国家电网公司 | Verification method for high-frequency partial discharge live detection of high-voltage cable accessory |
| JP2016006588A (en) * | 2014-06-20 | 2016-01-14 | 日立金属株式会社 | Cable signal detector and communication cable with connector |
| CN205404738U (en) * | 2016-03-04 | 2016-07-27 | 云南电网有限责任公司电力科学研究院 | High tension cable annex partial discharge detector device |
| CN106290377A (en) * | 2016-07-29 | 2017-01-04 | 长安大学 | A kind of Bridge Crack Monitoring early warning system and method for early warning |
| CN106980075A (en) * | 2017-04-07 | 2017-07-25 | 浙江图维科技股份有限公司 | A kind of netted differential type cable connector partial discharge detection device and method |
| CN108761277A (en) * | 2018-07-26 | 2018-11-06 | 国网福建省电力有限公司莆田供电公司 | A kind of cable and junction malfunction indicator and on-line monitoring system |
| CN109283433A (en) * | 2018-10-24 | 2019-01-29 | 国网山东省电力公司济南供电公司 | A cable joint detection device and method for partial discharge and grounding circulation |
| CN109765464A (en) * | 2018-12-14 | 2019-05-17 | 福建和盛高科技产业有限公司 | Partial discharge monitoring device in a kind of 10kV distribution cable transition joint |
| US20200080973A1 (en) * | 2018-09-11 | 2020-03-12 | Delphi Technologies, Llc | Method for nondestructive testing of joint between wire and electrical terminal |
| CN211180070U (en) * | 2019-11-21 | 2020-08-04 | 上海昌鹭智能技术有限公司 | High-voltage cable on-line partial discharge monitoring system |
| CN111679152A (en) * | 2020-06-10 | 2020-09-18 | 青岛鼎信通讯股份有限公司 | Cable fault detection device based on power line carrier |
| CN212364468U (en) * | 2020-02-26 | 2021-01-15 | 浙江图维科技股份有限公司 | Underground cable time synchronization device and fault positioning system |
| CN212459918U (en) * | 2020-09-27 | 2021-02-02 | 河南四达电力设备股份有限公司 | A partial discharge positioning device for ultra-long distribution cables |
| CN112345630A (en) * | 2020-10-27 | 2021-02-09 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Device and method for detecting lead sealing state of large-thickness nonmetal coating layer accessory |
-
2021
- 2021-03-09 CN CN202110258036.XA patent/CN113189440B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001194410A (en) * | 1999-07-21 | 2001-07-19 | Sumitomo Electric Ind Ltd | Partial discharge measurement method for direct embedded power cable |
| 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 |
| 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 |
| CN203249988U (en) * | 2013-01-25 | 2013-10-23 | 北京飞举电气有限公司 | Power cable antitheft broken line positioning device |
| CN103337119A (en) * | 2013-06-08 | 2013-10-02 | 山东康威通信技术股份有限公司 | Burglary-resisting monitoring and positioning method for armored cable |
| CN103646488A (en) * | 2013-11-21 | 2014-03-19 | 广东电网公司惠州供电局 | An armored cable monitoring system and a method |
| JP2016006588A (en) * | 2014-06-20 | 2016-01-14 | 日立金属株式会社 | Cable signal detector and communication cable with connector |
| CN104502876A (en) * | 2014-12-12 | 2015-04-08 | 国家电网公司 | Verification method for high-frequency partial discharge live detection of high-voltage cable accessory |
| CN205404738U (en) * | 2016-03-04 | 2016-07-27 | 云南电网有限责任公司电力科学研究院 | High tension cable annex partial discharge detector device |
| CN106290377A (en) * | 2016-07-29 | 2017-01-04 | 长安大学 | A kind of Bridge Crack Monitoring early warning system and method for early warning |
| CN106980075A (en) * | 2017-04-07 | 2017-07-25 | 浙江图维科技股份有限公司 | A kind of netted differential type cable connector partial discharge detection device and method |
| CN108761277A (en) * | 2018-07-26 | 2018-11-06 | 国网福建省电力有限公司莆田供电公司 | A kind of cable and junction malfunction indicator and on-line monitoring system |
| US20200080973A1 (en) * | 2018-09-11 | 2020-03-12 | Delphi Technologies, Llc | Method for nondestructive testing of joint between wire and electrical terminal |
| CN109283433A (en) * | 2018-10-24 | 2019-01-29 | 国网山东省电力公司济南供电公司 | A cable joint detection device and method for partial discharge and grounding circulation |
| CN109765464A (en) * | 2018-12-14 | 2019-05-17 | 福建和盛高科技产业有限公司 | Partial discharge monitoring device in a kind of 10kV distribution cable transition joint |
| CN211180070U (en) * | 2019-11-21 | 2020-08-04 | 上海昌鹭智能技术有限公司 | High-voltage cable on-line partial discharge monitoring system |
| CN212364468U (en) * | 2020-02-26 | 2021-01-15 | 浙江图维科技股份有限公司 | Underground cable time synchronization device and fault positioning system |
| CN111679152A (en) * | 2020-06-10 | 2020-09-18 | 青岛鼎信通讯股份有限公司 | Cable fault detection device based on power line carrier |
| CN212459918U (en) * | 2020-09-27 | 2021-02-02 | 河南四达电力设备股份有限公司 | A partial discharge positioning device for ultra-long distribution cables |
| CN112345630A (en) * | 2020-10-27 | 2021-02-09 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Device and method for detecting lead sealing state of large-thickness nonmetal coating layer accessory |
Non-Patent Citations (4)
| Title |
|---|
| 曹俊平: "《高压电缆附件铅封涡流探伤方法试验验证及应用》", 《高电压技术》 * |
| 曹俊平: "《高压电缆附件铅封涡流探伤方法试验验证及应用》", 《高电压技术》, 20 June 2018 (2018-06-20) * |
| 蒙绍新: "《电容耦合法电缆局部放电带电检测的在线校正》", 《高电压技术》 * |
| 蒙绍新: "《电容耦合法电缆局部放电带电检测的在线校正》", 《高电压技术》, 30 November 2015 (2015-11-30) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848246A (en) * | 2021-08-16 | 2021-12-28 | 浙江图维科技股份有限公司 | Online detection system and method for lead-lined cracking of cable accessory |
| CN114113892A (en) * | 2021-11-24 | 2022-03-01 | 浙江新图维电子科技有限公司 | Cable joint lead sealing detection device and method |
| CN114113892B (en) * | 2021-11-24 | 2024-01-16 | 浙江新图维电子科技有限公司 | Cable connector lead sealing detection device and method |
| CN115144791A (en) * | 2022-09-06 | 2022-10-04 | 浙江新图维电子科技有限公司 | Method and system for online detection of high-voltage cable armor grounding state |
| CN115877123A (en) * | 2022-11-24 | 2023-03-31 | 国网山东省电力公司电力科学研究院 | Method and system for evaluating sealing connection condition of tail pipe of high-voltage cable terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113189440B (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113189440B (en) | Lead sealing communication detection device and method based on signal coupling technology | |
| CN110967601B (en) | A multi-dimensional detection method for partial discharge of transformer bushing | |
| CN104181377A (en) | High-voltage ultra-small unmanned electroscope | |
| CN102096027B (en) | Pre-embedded sensor for local discharge detection of power cable accessory | |
| CN102565588A (en) | On-line monitoring method used for high-voltage XLPE (Cross Linked Polyethylene) cable | |
| CN109765464B (en) | Partial discharge monitoring device in 10kV distribution cable intermediate head | |
| CN205404742U (en) | A simple and easy anti jamming unit for GIS partial discharge superfrequency is electrified to be detected | |
| CN103499777B (en) | A kind of appraisal procedure based on ultralow frequency Partial Discharge Detection and system | |
| CN214252474U (en) | Intelligent sensor for cable partial discharge live detection | |
| CN106932682A (en) | A kind of earth-return circuit detection method of voltage whole station one point earth | |
| CN112816506A (en) | Cable joint lead lining damage detection device and method using electromagnetic wave penetration effect | |
| Wei et al. | Research on broken rail real-time detection system for ultrasonic guided wave | |
| CN102879717A (en) | Sensing system for online detection of cable partial discharge | |
| CN205067665U (en) | On -line monitoring system is put to vary voltage general ability | |
| CN205809229U (en) | A kind of circuit running cable grounding state-detection and localization of fault | |
| CN204964685U (en) | Partial discharge's non -contact takes electric detection means in distribution cable annex | |
| CN110174600A (en) | GIS detection device and application based on μ PMT combining ultrasonic sensor | |
| CN211183366U (en) | Waterproof protection device for cable intermediate joint | |
| CN113252742B (en) | Lead sealing damage detection device and method based on distributed capacitance detection technology | |
| CN214278727U (en) | Potential hazard investigation device for metallurgical enterprise | |
| CN205257346U (en) | Steel cord conveyor belt takes detection alarm device absolutely | |
| CN213813575U (en) | Cable joint enamel lead damage detection device based on radio frequency identification technology | |
| CN115754815A (en) | Low-cost cable single-end online anti-theft monitoring device and method | |
| CN212008412U (en) | Device for measuring phase fraction of two-phase flow by electromagnetic induction technology | |
| CN107422231A (en) | A kind of transformer superfrequency local discharge detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |