CN111551870A - Insulator leakage current monitoring device and method based on fiber bragg grating - Google Patents
Insulator leakage current monitoring device and method based on fiber bragg grating Download PDFInfo
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- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The application discloses an insulator leakage current monitoring device and method based on fiber bragg gratings, wherein the power transmission line leakage current detection device comprises a leakage current direct current guiding module, a signal conversion module and a signal processing module; the leakage current direct current guiding module converts leakage current to be detected into direct current by utilizing direct current guiding and drives the motion assembly by utilizing the direct current; the signal conversion module is used for converting the movement of the movement component output by the leakage current direct current guiding module into the deformation of the fiber bragg grating and further converting the deformation into a photoelectric signal; and the signal processing module is used for converting the photoelectric signals output by the signal conversion module into real-time leakage current data. The real-time monitoring and/or early warning of the leakage current of the insulator of the power transmission line can be realized.
Description
Technical Field
The invention belongs to the technical field of current detection of power transmission lines, and relates to an insulator leakage current monitoring device and method based on fiber bragg gratings.
Background
With the continuous penetration of the marketing process of the power grid and the continuous improvement of the reliability and quality requirements of the power grid on the users, the power industry is facing unprecedented challenges and opportunities. The construction of a controllable, safe, reliable, environment-friendly and economic intelligent power grid system is becoming a common target of the global power industry. The transmission line is used as an important carrier of power flow and energy flow, and the safety of the transmission line becomes a problem to be solved urgently.
The insulator string leakage current is one of important monitoring objects of the power transmission line, and effective monitoring of the insulator string leakage current is receiving more and more attention and research.
At present, the monitoring of the leakage current of the insulator string mainly depends on electronic measurement and wireless public network transmission, so that the conditions of high failure rate, insufficient reliability and unsafe and unstable data transmission are easy to occur.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides an insulator leakage current monitoring device and method based on fiber bragg gratings.
In order to achieve the above object, the first invention of the present application adopts the following technical solutions:
the utility model provides a current monitoring devices is revealed to insulator based on fiber grating for detect transmission line's leakage current, its characterized in that:
the leakage current detection device of the power transmission line comprises a leakage current direct current guiding module, a signal conversion module and a signal processing module;
the leakage current direct current guiding module converts leakage current to be detected into direct current by utilizing direct current guiding and drives the motion assembly by utilizing the direct current;
the signal conversion module is used for converting the movement of the movement component output by the leakage current direct current guiding module into the deformation of the fiber bragg grating and further converting the deformation into a photoelectric signal;
and the signal processing module is used for converting the photoelectric signals output by the signal conversion module into real-time leakage current data.
The invention further comprises the following preferred embodiments:
the leakage current direct current guiding module comprises a leakage current collecting submodule, an alternating current and direct current rectifying circuit and a moving assembly;
the leakage current acquisition submodule is used for directly acquiring leakage current;
the alternating current-direct current rectifying circuit is used for converting alternating current output by the leakage current acquisition submodule into direct current;
and the motion assembly is used for carrying out motion by utilizing direct current output by the alternating current-direct current rectification circuit.
The leakage current acquisition submodule adopts a collector ring, the collector ring is fixed at the tail end of a pole tower insulator, and the output of the collector ring is connected with an alternating current-direct current rectification circuit.
The alternating current-direct current rectifying circuit adopts a diode rectifying circuit, the diode rectifying circuit comprises four diodes, the four diodes are divided into two groups, the conduction directions of the two diodes in each group are consistent, the two groups of diodes are connected in parallel, the connecting points of the two groups of diodes output direct current outwards, the connecting points of the two diodes in one group are connected with the output line of the leakage current collecting submodule, and the connecting points of the two diodes in the other group are grounded.
The motion component adopts piezoelectric ceramics, and the piezoelectric ceramics converts the output voltage of the alternating current-direct current rectification circuit into the extension and retraction of the piezoelectric ceramics.
The signal conversion module comprises a fiber grating and a fiber grating information demodulator;
the fiber grating is attached to the piezoelectric ceramic, and the deformation of the piezoelectric ceramic is converted into the deformation of the fiber grating.
The fiber bragg grating information demodulator of the signal conversion module is used for providing a broadband spectrum, transmitting the broadband spectrum to the fiber bragg grating through an optical fiber by the circulator, receiving light with a specific wavelength reflected by the fiber bragg grating by the circulator, demodulating the information of the light and sending the demodulated information to the signal processing module;
the wavelength of the light with specific wavelength reflected by the fiber grating reflects the strain of the piezoelectric ceramic and the temperature of the position where the fiber grating is attached.
The signal processing module is used for receiving the demodulated wavelength information sent by the signal conversion module, calculating a leakage current value, feeding the leakage current value back to a user through the display device, and selecting to start the alarm device according to the signal value.
The application also discloses another invention, namely a leakage current monitoring method based on the leakage current monitoring device, which is used for detecting the leakage current of the power transmission line, and the leakage current detecting method comprises the following steps:
step 1: the leakage current direct current guiding module converts the leakage current value of the power transmission line into direct current and then drives the piezoelectric ceramics to stretch;
step 2: the signal conversion module converts the deformation of the piezoelectric ceramics into optical signals with specific wavelength by using the fiber bragg grating, and the optical signals are demodulated and then sent to the signal processing module;
and step 3: and the signal processing module converts the received demodulated optical signal into a leakage current value and displays the leakage current value to a user.
Further, the signal conversion module in step 2 converts the deformation of the piezoelectric ceramic into an optical signal with a specific wavelength by using the fiber grating, and includes the following steps:
step 2.1: the fiber grating information demodulator provides a broadband spectrum which is transmitted to the fiber grating by the optical fiber through the circulator;
step 2.2: the broadband spectrum transmitted to the optical fiber reflects light with specific wavelength back through the fiber bragg grating, and the reflected light returns to the fiber bragg grating information demodulator through the loop-back device;
step 2.3: the fiber grating information demodulator demodulates the transmitted light.
The beneficial effect that this application reached:
1. the method and the device can realize real-time monitoring and/or early warning of the insulator leakage current of the power transmission line;
2. the fiber grating adopted by the application is not influenced by a strong magnetic field, and has the advantages of small quality, high sensitivity and high accuracy. Usually, the fiber grating-based sensor is placed on a tower in the field, and the fiber grating-based measuring device can be passive and does not need to be powered. The equipment needing power supply is at the transformer station end. The leakage current of the whole optical fiber passive insulator string is free from electromagnetic interference, power supply is not needed, and the reliability is high. The scheme provided by the embodiment of the invention can obtain the magnitude of the leakage current in real time, is simple, quick and convenient, has low cost and has very good effect.
Drawings
Fig. 1 is a block diagram of a fiber grating-based insulator leakage current monitoring device according to the present application;
FIG. 2 is a diagram of an embodiment of a fiber grating-based insulator leakage current monitoring device according to the present application;
FIG. 3 is a schematic diagram of the rectified current principle;
FIG. 4 is a schematic diagram of fiber grating principle and demodulation.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. A process may be terminated when its operations are completed, but may have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
As shown in fig. 1, the insulator leakage current monitoring device based on fiber bragg grating of the present application is used for detecting leakage current of a power transmission line, and the power transmission line leakage current detecting device includes a leakage current direct current guiding module, a signal conversion module and a signal processing module;
the leakage current direct current guiding module converts leakage current to be detected into direct current by utilizing direct current guiding and drives the motion assembly by utilizing the direct current;
the signal conversion module is used for converting the movement of the movement component output by the leakage current direct current guiding module into the deformation of the fiber bragg grating and further converting the deformation into a photoelectric signal;
and the signal processing module is used for converting the photoelectric signals output by the signal conversion module into real-time leakage current data.
When the leakage current direct current guiding module is specifically implemented, the leakage current direct current guiding module comprises a leakage current collecting submodule, an alternating current-direct current rectifying circuit and a moving assembly;
the leakage current acquisition submodule is used for directly acquiring leakage current;
the alternating current-direct current rectifying circuit is used for converting alternating current output by the leakage current acquisition submodule into direct current;
and the motion assembly is used for carrying out motion by utilizing direct current output by the alternating current-direct current rectification circuit.
As shown in fig. 2, the leakage current collecting submodule adopts a collector ring, the collector ring is fixed at the tail end of a pole and tower insulator, and the output of the collector ring is connected with an alternating current-direct current rectifying circuit.
The alternating current-direct current rectifying circuit adopts a diode rectifying circuit, the diode rectifying circuit comprises four diodes, the four diodes are divided into two groups, the conduction directions of the two diodes in each group are consistent, the two groups of diodes are connected in parallel, the connecting points of the two groups of diodes output direct current outwards, the connecting points of the two diodes in one group are connected with the output line of the leakage current collecting submodule, and the connecting points of the two diodes in the other group are grounded.
As shown in fig. 3, after the leakage current (usually 50HZ ac) is rectified, the 50HZ ac is rectified to 100 HZ. The implementation is realized by utilizing the characteristic of the unidirectional diode, namely unidirectional conductivity. When the forward current flows into point A, it can only flow to the B terminal through the diode in the same direction, but can not flow to the D terminal. Similarly, the current flowing to the terminal B can only flow into the + stage of the piezoelectric ceramic, but not into the terminal C. And finally, according to the mechanism, the mixed solution flows out of the stage-one, flows to the D end, flows to the C end and is grounded.
The motion component adopts piezoelectric ceramics, the piezoelectric ceramics are voltage sensitive devices, and when voltage difference occurs between two stages, the piezoelectric ceramics can stretch and contract. Therefore, the piezoelectric ceramic material converts the output voltage of the alternating current-direct current rectifying circuit into the expansion of the piezoelectric ceramic.
The signal conversion module comprises a fiber grating and a fiber grating information demodulator;
the fiber bragg grating (such as FBG) is attached to the piezoelectric ceramic, and the deformation of the piezoelectric ceramic is converted into the deformation of the fiber bragg grating.
An FBG is a special structure made of a grid that reflects light of a specific wavelength back, usually called the center wavelength, and transmits light patterns of other wavelengths. When an FBG is subjected to temperature or stress (tensile or compressive) changes, the center wavelength of the reflected light is shifted, and the shift amount is proportional to the change in temperature or stress. The temperature or the stress value can be obtained by measuring the central wavelength.
The fiber grating is not influenced by a strong magnetic field, and has the advantages of small quality, high sensitivity and high accuracy. Usually, the fiber grating-based sensor is placed on a tower in the field, and the fiber grating-based measuring device can be passive and does not need to be powered. The equipment needing power supply is at the transformer station end. The leakage current of the whole optical fiber passive insulator string is free from electromagnetic interference, power supply is not needed, and the reliability is high. The scheme provided by the embodiment of the invention can obtain the magnitude of the leakage current in real time, is simple, quick and convenient, has low cost and has very good effect.
As shown in fig. 4, the fiber grating information demodulator of the signal conversion module is configured to provide a broadband spectrum, transmit the broadband spectrum to the fiber grating through the optical fiber via the circulator, receive the light with the specific wavelength reflected by the fiber grating via the circulator, demodulate the information of the light, and send the demodulated information to the signal processing module;
the wavelength of the light with specific wavelength reflected by the fiber grating reflects the strain of the piezoelectric ceramic and the temperature of the position where the fiber grating is attached.
In conclusion, when the insulator is contaminated and leakage current exists on the surface of the insulator, the leakage current passes through the collector ring and the rectifying circuit and finally acts on the piezoelectric ceramic, so that the piezoelectric ceramic stretches and contracts to drive the FBG to stretch and contract, and the central wavelength of the FBG is deviated. When the leakage current becomes large or small, the amount of expansion and contraction of the piezoelectric ceramic also becomes large or small, and finally the FBG shift amount also becomes large or small. The leakage current value can be obtained through the center wavelength offset demodulated by the fiber grating information demodulator. The current flow direction is as follows:
forward current: collector → a → B → + level → -level → D → C → ground;
directional current: collector → a → D → -stage → B → C → ground; and the amount of change in current/voltage ∈ piezoelectric ceramic expansion amount ∈ FBG expansion amount ∈ center wavelength shift amount (∈ proportional sign).
The signal processing module is used for receiving the demodulated wavelength information sent by the signal conversion module, calculating a leakage current value, feeding the leakage current value back to a user through the display device, and selecting to start the alarm device according to the signal value.
The leakage current value can be directly displayed, and the leakage current values with different degrees can be identified by different colors; the alarm sound can be emitted, and the alarm signal can also be emitted in a specific color or illumination effect.
A leakage current monitoring method of the leakage current monitoring device is used for detecting leakage current of a power transmission line, and comprises the following steps:
step 1: the leakage current direct current guiding module converts the leakage current value of the power transmission line into direct current and then drives the piezoelectric ceramics to stretch;
step 2: the signal conversion module converts the deformation of the piezoelectric ceramics into optical signals with specific wavelength by using the fiber bragg grating, and the optical signals are demodulated and then sent to the signal processing module;
the method comprises the following steps:
step 2.1: the fiber grating information demodulator provides a broadband spectrum which is transmitted to the fiber grating by the optical fiber through the circulator;
step 2.2: the broadband spectrum transmitted to the optical fiber reflects light with specific wavelength back through the fiber bragg grating, and the reflected light returns to the fiber bragg grating information demodulator through the loop-back device;
step 2.3: the fiber grating information demodulator demodulates the transmitted light.
And step 3: and the signal processing module converts the received demodulated optical signal into a leakage current value and displays the leakage current value to a user.
The division of the modules in the above embodiments of the present invention is schematic, and only one logical function division is provided, and there may be another division manner in actual implementation, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The electronic device of embodiments of the present invention exists in a variety of forms, including but not limited to:
(1) mobile communication devices, which are characterized by mobile communication capabilities and are primarily targeted at providing voice and data communications. Such terminals include smart phones (e.g., iphones), multimedia phones, functional phones, and low-end phones, among others.
(2) The ultra-mobile personal computer equipment belongs to the category of personal computers, has calculation and processing functions and generally has the characteristic of mobile internet access. Such terminals include PDA, MID, and UMPC devices, such as ipads.
(3) Portable entertainment devices such devices may display and play multimedia content. Such devices include audio and video players (e.g., ipods), handheld game consoles, electronic books, as well as smart toys and portable car navigation devices.
(4) The server is similar to a general computer architecture, but has higher requirements on processing capability, stability, reliability, safety, expandability, manageability and the like because of the need of providing highly reliable services.
(5) And other electronic devices with data interaction functions.
The above-described embodiments of the apparatus are merely illustrative, and the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Embodiments of the present invention provide a non-volatile computer-readable storage medium, which stores program instructions for executing the methods and steps in the above method embodiments when the program instructions are executed by an electronic device.
Embodiments of the present invention provide a computer program product, wherein the computer program product comprises a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, wherein the program instructions, when executed by an electronic device, cause the electronic device to perform the method of any of the above-mentioned method embodiments.
Each functional module in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or an intelligent terminal device or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In the above embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. The utility model provides a current monitoring devices is revealed to insulator based on fiber grating for detect transmission line's leakage current, its characterized in that:
the leakage current detection device of the power transmission line comprises a leakage current direct current guiding module, a signal conversion module and a signal processing module;
the leakage current direct current guiding module converts leakage current to be detected into direct current by utilizing direct current guiding and drives the motion assembly by utilizing the direct current;
the signal conversion module is used for converting the movement of the movement component output by the leakage current direct current guiding module into the deformation of the fiber bragg grating and further converting the deformation into a photoelectric signal;
and the signal processing module is used for converting the photoelectric signals output by the signal conversion module into real-time leakage current data.
2. The fiber grating-based insulator leakage current monitoring device according to claim 1, wherein:
the leakage current direct current guiding module comprises a leakage current collecting submodule, an alternating current and direct current rectifying circuit and a moving assembly;
the leakage current acquisition submodule is used for directly acquiring leakage current;
the alternating current-direct current rectifying circuit is used for converting alternating current output by the leakage current acquisition submodule into direct current;
and the motion assembly is used for carrying out motion by utilizing direct current output by the alternating current-direct current rectification circuit.
3. The fiber grating-based insulator leakage current monitoring device according to claim 2, wherein:
the leakage current acquisition submodule adopts a collector ring, the collector ring is fixed at the tail end of a pole tower insulator, and the output of the collector ring is connected with an alternating current-direct current rectification circuit.
4. The fiber grating-based insulator leakage current monitoring device according to claim 2, wherein:
the alternating current-direct current rectifying circuit adopts a diode rectifying circuit, the diode rectifying circuit comprises four diodes, the four diodes are divided into two groups, the conduction directions of the two diodes in each group are consistent, the two groups of diodes are connected in parallel, the connecting points of the two groups of diodes output direct current outwards, the connecting points of the two diodes in one group are connected with the output line of the leakage current collecting submodule, and the connecting points of the two diodes in the other group are grounded.
5. The fiber grating-based insulator leakage current monitoring device according to claim 2, wherein:
the motion component adopts piezoelectric ceramics, and the piezoelectric ceramics converts the output voltage of the alternating current-direct current rectification circuit into the extension and retraction of the piezoelectric ceramics.
6. The fiber grating-based insulator leakage current monitoring device according to claim 5, wherein:
the signal conversion module comprises a fiber grating and a fiber grating information demodulator;
the fiber grating is attached to the piezoelectric ceramic, and the deformation of the piezoelectric ceramic is converted into the deformation of the fiber grating.
7. The fiber grating-based insulator leakage current monitoring device according to claim 6, wherein:
the fiber bragg grating information demodulator of the signal conversion module is used for providing a broadband spectrum, transmitting the broadband spectrum to the fiber bragg grating through an optical fiber by the circulator, receiving light with a specific wavelength reflected by the fiber bragg grating by the circulator, demodulating the information of the light and sending the demodulated information to the signal processing module;
the wavelength of the light with specific wavelength reflected by the fiber grating reflects the strain of the piezoelectric ceramic and the temperature of the position where the fiber grating is attached.
8. The fiber grating-based insulator leakage current monitoring device according to claim 1, wherein:
the signal processing module is used for receiving the demodulated wavelength information sent by the signal conversion module, calculating a leakage current value, feeding the leakage current value back to a user through the display device, and selecting to start the alarm device according to the signal value.
9. A leakage current monitoring method based on the leakage current monitoring device according to any one of claims 1 to 8, for detecting the leakage current of a power transmission line, wherein:
the leakage current detection method includes the steps of:
step 1: the leakage current direct current guiding module converts the leakage current value of the power transmission line into direct current and then drives the piezoelectric ceramics to stretch;
step 2: the signal conversion module converts the deformation of the piezoelectric ceramics into optical signals with specific wavelength by using the fiber bragg grating, and the optical signals are demodulated and then sent to the signal processing module;
and step 3: and the signal processing module converts the received demodulated optical signal into a leakage current value and displays the leakage current value to a user.
10. The leakage current monitoring method according to claim 9, wherein:
the signal conversion module in step 2 converts the deformation of the piezoelectric ceramics into optical signals with specific wavelength by using the fiber grating, and comprises the following steps:
step 2.1: the fiber grating information demodulator provides a broadband spectrum which is transmitted to the fiber grating by the optical fiber through the circulator;
step 2.2: the broadband spectrum transmitted to the optical fiber reflects light with specific wavelength back through the fiber bragg grating, and the reflected light returns to the fiber bragg grating information demodulator through the loop-back device;
step 2.3: the fiber grating information demodulator demodulates the transmitted light.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113917360A (en) * | 2021-09-10 | 2022-01-11 | 西安理工大学 | Insulator leakage current optical detection device integrating temperature and humidity |
| CN116973697A (en) * | 2023-06-20 | 2023-10-31 | 无锡广盈集团有限公司 | Leakage current identification system and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947678A (en) * | 2010-04-30 | 2013-02-27 | 维斯塔斯风力系统集团公司 | Optical sensor system and detecting method for enclosed semiconductor device module |
| JP2013174572A (en) * | 2012-01-23 | 2013-09-05 | Toyota Industries Corp | Optical fiber for sensor and power device monitoring system |
| CN103323056A (en) * | 2013-06-26 | 2013-09-25 | 国家电网公司 | Direct current, temperature and pressure monitoring device for electrical equipment |
| CN103645447A (en) * | 2013-11-25 | 2014-03-19 | 昆明理工大学 | Electrostrictive effect based fiber bragg grating magnetic field sensor and application method thereof |
| CN103645446A (en) * | 2013-11-25 | 2014-03-19 | 昆明理工大学 | A fiber Bragg raster magnetic field sensor based on a current heat effect and an application method thereof |
| CN110940843A (en) * | 2019-11-15 | 2020-03-31 | 国网山西省电力公司大同供电公司 | High-frequency current demodulation device for fiber grating current sensor |
| CN111123157A (en) * | 2020-01-23 | 2020-05-08 | 国网江苏省电力有限公司无锡供电分公司 | Device and method for detecting leakage current of power transmission line |
-
2020
- 2020-05-18 CN CN202010421412.8A patent/CN111551870A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947678A (en) * | 2010-04-30 | 2013-02-27 | 维斯塔斯风力系统集团公司 | Optical sensor system and detecting method for enclosed semiconductor device module |
| JP2013174572A (en) * | 2012-01-23 | 2013-09-05 | Toyota Industries Corp | Optical fiber for sensor and power device monitoring system |
| CN103323056A (en) * | 2013-06-26 | 2013-09-25 | 国家电网公司 | Direct current, temperature and pressure monitoring device for electrical equipment |
| CN103645447A (en) * | 2013-11-25 | 2014-03-19 | 昆明理工大学 | Electrostrictive effect based fiber bragg grating magnetic field sensor and application method thereof |
| CN103645446A (en) * | 2013-11-25 | 2014-03-19 | 昆明理工大学 | A fiber Bragg raster magnetic field sensor based on a current heat effect and an application method thereof |
| CN110940843A (en) * | 2019-11-15 | 2020-03-31 | 国网山西省电力公司大同供电公司 | High-frequency current demodulation device for fiber grating current sensor |
| CN111123157A (en) * | 2020-01-23 | 2020-05-08 | 国网江苏省电力有限公司无锡供电分公司 | Device and method for detecting leakage current of power transmission line |
Non-Patent Citations (1)
| Title |
|---|
| 王振: "压电驱动式光纤Bragg光栅电流传感器的研究", 《中国优秀博硕士学位论文全文数据库(硕士)信息科技辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113917360A (en) * | 2021-09-10 | 2022-01-11 | 西安理工大学 | Insulator leakage current optical detection device integrating temperature and humidity |
| CN116973697A (en) * | 2023-06-20 | 2023-10-31 | 无锡广盈集团有限公司 | Leakage current identification system and method |
| CN116973697B (en) * | 2023-06-20 | 2024-03-26 | 无锡广盈集团有限公司 | Leakage current identification system and method |
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