CN109799404B - Method and system for detecting degradation rate of surge protection device - Google Patents
Method and system for detecting degradation rate of surge protection device Download PDFInfo
- Publication number
- CN109799404B CN109799404B CN201910042794.0A CN201910042794A CN109799404B CN 109799404 B CN109799404 B CN 109799404B CN 201910042794 A CN201910042794 A CN 201910042794A CN 109799404 B CN109799404 B CN 109799404B
- Authority
- CN
- China
- Prior art keywords
- current
- protection device
- surge
- surge protection
- degradation
- 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.)
- Active
Links
Images
Abstract
The invention is suitable for the technical field of electricity, and provides a method for detecting the degradation rate of a surge protection device, which comprises the following steps: acquiring transient surge current energy passing through a surge protection device; comparing the transient surge current energy of the surge protection device with preset current energy to obtain a comparison result; calculating the current degradation degree of the surge protection device according to the comparison result, and accumulating the current degradation degree; and determining an alarm signal according to the current degradation degree accumulation, wherein the alarm signal comprises the current operation state of the surge protection device. According to the embodiment of the invention, the current degradation degree accumulation of the surge protection device is obtained by acquiring the transient surge current energy passing through the surge protection device, so that the damage of each surge impact to the surge protection device is determined, an alarm signal can be sent according to the current degradation degree accumulation of the surge protection device, the surge protection device is replaced and maintained in time, and the safety of electrical equipment can be effectively protected.
Description
Technical Field
The invention belongs to the technical field of electricity, and particularly relates to a method and a system for detecting the degradation rate of a surge protection device.
Background
In many electrical equipment applications, electrical equipment is grounded, and the addition of a surge protection device to the electrical equipment is due protection for the electrical equipment. The surge protection device spd (surge protection device) is used for discharging current to the ground when surge current attacks equipment, and plays a role in protecting electrical components. The basic components for a surge protector are: piezoresistors, discharge gaps, gas discharge tubes, suppressor diodes, chokes, and the like.
According to relevant international standards or domestic standards, when an 8/20 mu s current wave is used for impacting the SPD, if the maximum discharge current I is larger than the maximum flow Imax once or the nominal discharge current In20 times, the SPD is damaged, and the display window of the SPD is changed from green to red. The current wave of 8/20 μ s is a lightning current waveform simulated by a special device according to the relevant standard (GB/17626.5-1999 electromagnetic compatibility test and measuring technology surge (impact) immunity test).
However, in practical engineering application, the waveform of the surge current is not a standard 8/20 μ s waveform, parameters such as the peak value, the decay period and the like are uncertain, the damage of the SPD caused by each surge impact cannot be determined, and the deterioration rate of the SPD cannot be determined after multiple damages. Therefore, the safety belt of the electrical equipment is greatly hidden, and particularly, irreparable loss can be brought to application places which have high safety requirements and are unattended and are inspected by periodic inspection, such as railway signal electrical equipment, wireless communication base stations, navigation stations, field monitoring points and other application scenes.
Disclosure of Invention
The invention aims to provide a method and a system for detecting the degradation rate of a surge protection device, and aims to solve the problem that the degradation rate of the surge protection device cannot be judged in the prior art.
The present invention is achieved as described above, and a method for detecting a degradation rate of a surge protection device includes:
acquiring transient surge current energy passing through a surge protection device;
comparing the transient surge current energy of the surge protection device with preset standard surge current energy to obtain a comparison result;
determining the current degradation degree of the surge protection device according to the comparison result, and accumulating the current degradation degree;
and determining an alarm signal according to the current degradation degree accumulation, wherein the alarm signal comprises the current operation state of the surge protection device.
Further, the acquiring transient surge current energy through the surge protection device comprises:
acquiring induced electromotive force of a grounding wire passing through the surge protection device in a transient time period through a surge current detection device;
acquiring the number of turns of an induction coil in the surge current detection device, the cross-sectional area of an induction lead and the distance from any point in the induction coil to the center of the grounding lead;
respectively integrating the induced electromotive force and the distance from any point in the induction coil to the center of the grounding wire to obtain an induced electromotive force integral value and a distance integral value;
and calculating the transient surge current energy according to the transient time period, the induced electromotive force integral value, the distance integral value, the number of turns of the induction coil and the sectional area of the induction lead.
Further, the transient time period is denoted by Δ t, which is t-t0Energy of the transient surge current and
indicating that the induced electromotive force is integrated by
Is represented by the distance integral value
When the number of turns of the induction coil is represented by n, the cross-sectional area of the induction wire is represented by S, and the included angle between the plane of the induction coil and a magnetic line is represented by theta, then:
wherein, mu0Denotes the permeability of air and I denotes the transient surge current.
Further, the comparing the transient surge current energy of the surge protection device with a preset standard surge current energy to obtain a comparison result includes:
according to the detected transient surge current energy passing through the surge protection device, searching corresponding standard surge current energy in an energy corresponding table of a standard surge current waveform, wherein the standard surge current waveform is a 8/20 mu s lightning current waveform simulated by special equipment according to a relevant standard (GB/17626.5-1999 electromagnetic compatibility test and measuring technology surge (impact) immunity test);
determining a current waveform corresponding to the transient surge current energy of the surge protection device according to the searched standard surge current energy, and taking the current waveform as the comparison result;
and the energy corresponding table stores the current waveform corresponding to each current energy.
Further, determining a current degradation degree of the surge protection device according to the comparison result, and performing current degradation degree accumulation includes:
searching a degradation corresponding table according to the current waveform, and finding a current degradation degree corresponding to the current waveform in the degradation corresponding table, wherein the current degradation degree corresponding to each current waveform is stored in the degradation corresponding table;
and adding the current degradation degree and the previous degradation degree to obtain the current degradation degree accumulation.
Further, said determining an alarm signal according to said current degradation accumulation comprises:
judging whether the current degradation degree accumulation meets the condition of replacing the surge protection device, if so, generating replacement warning information, and pushing the replacement warning information to an operation and maintenance terminal;
and if not, updating degradation degree information, and pushing the degradation degree information to an operation and maintenance terminal, wherein the degradation degree information comprises information of current degradation degree accumulation, surge impact frequency, peak value and time of the current surge protection device.
Further, the judging whether the current degradation degree accumulation reaches a condition for replacing the surge protection device includes:
and comparing the current degradation rate with a maintenance degradation rate of the surge protection device by taking the current degradation degree accumulation as the current degradation rate, and comparing whether the current degradation rate is equal to or greater than the maintenance degradation rate threshold value.
An embodiment of the present invention further provides a system for detecting a degradation rate of a surge protection device, including:
the surge current detection device comprises an induction coil which is surrounded by induction leads to form a plurality of turns and is used for acquiring the induced electromotive force of the grounding lead passing through the middle of the induction coil in a transient time period;
the detection system is used for calculating transient surge current energy passing through the surge protection device according to the induced electromotive force, comparing the transient surge current energy of the surge protection device with preset standard surge current energy to obtain a comparison result, calculating the current degradation degree of the surge protection device according to the comparison result, accumulating the current degradation degree, and determining an alarm signal according to the current degradation degree accumulation, wherein the alarm signal comprises the current operation state of the surge protection device.
The embodiment of the invention also provides a system for detecting the degradation rate of the surge protection device, which comprises a terminal, wherein the terminal comprises a memory, a processor and a computer program which is stored on the memory and runs on the processor, and when the processor executes the computer program, the steps in the method for detecting the degradation rate of the surge protection device are realized, so that information and an alarm are presented.
The invention further provides a system for detecting the degradation rate of the surge protection device, which comprises a readable storage medium, wherein a computer program is stored on the readable storage medium, and when the computer program is executed by a processor, the steps in the method for detecting the degradation rate of the surge protection device are realized.
Compared with the prior art, the invention has the beneficial effects that: the embodiment of the invention obtains the transient surge current energy of the surge protection device, compares the transient surge current energy with the preset current energy to obtain a comparison result, calculates the current degradation degree of the surge protection device according to the comparison result, finally determines an alarm signal according to the current degradation degree, and sends the alarm signal according to a preset mode. According to the embodiment of the invention, the current degradation degree accumulation of the surge protection device is obtained by acquiring the transient surge current energy passing through the surge protection device, so that the damage of each surge impact to the surge protection device is determined, an alarm signal can be sent according to the current degradation degree accumulation of the surge protection device, the surge protection device is replaced and maintained in time, and the safety of electrical equipment can be effectively protected.
Drawings
Fig. 1 is a flowchart of a degradation rate detection method of a surge protection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a degradation rate detection system of a surge protection device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 illustrates a degradation rate detection method for a surge protection device according to an embodiment of the present invention, including:
s101, acquiring transient surge current energy passing through a surge protection device;
s102, comparing the transient surge current energy of the surge protection device with preset standard surge current energy to obtain a comparison result;
s103, determining the current degradation degree of the surge protection device according to the comparison result, and accumulating the current degradation degree;
and S104, determining an alarm signal according to the current degradation degree accumulation, wherein the alarm signal comprises the current operation state of the surge protection device.
Specifically, in step S101, acquiring transient surge current energy passing through the surge protection device includes: acquiring induced electromotive force of a lead passing through the surge protection device in a transient time period through a surge current detection device; acquiring the number of turns of an induction coil in the surge current detection device, the cross-sectional area of an induction lead and the distance from any point in the induction coil to the center of the grounding lead; respectively integrating the induced electromotive force and the distance from any point in the induction coil to the center of the grounding wire to obtain an induced electromotive force integral value and a distance integral value; and calculating the transient surge current energy according to the transient time period, the induced electromotive force integral value, the distance integral value, the number of turns of the induction coil and the sectional area of the induction lead.
In particular, the transient period is denoted by Δ t, which is t-t0The transient surge current energy is equal to
Showing the value of the induced electromotive force integrated by
Indicating that the distance integral value is
When the number of turns of the induction coil is represented by n, the cross-sectional area of the induction wire is represented by S, and the included angle between the plane of the induction coil and the magnetic force line is represented by theta, then:
wherein, mu0Indicating the permeability of air.
In step S102, comparing the transient surge current energy of the surge protection device with a preset standard surge current energy, and obtaining a comparison result includes:
according to the detected transient surge current energy passing through the surge protection device, searching corresponding standard surge current energy in an energy corresponding table of a standard surge current waveform, wherein the standard surge current waveform is a 8/20 mu s lightning current waveform simulated by special equipment according to a relevant standard (GB/17626.5-1999 electromagnetic compatibility test and measuring technology surge (impact) immunity test); determining a current waveform corresponding to the transient surge current energy of the surge protection device according to the searched standard surge current energy, and taking the current waveform as the comparison result; and the energy corresponding table stores the current waveform corresponding to each current energy.
Specifically, determining the current degradation degree of the surge protection device according to the comparison result, and performing the current degradation degree accumulation includes: searching a degradation corresponding table according to the current waveform, and finding a current degradation degree corresponding to the current waveform in the degradation corresponding table, wherein the current degradation degree corresponding to each current waveform is stored in the degradation corresponding table; and adding the current degradation degree and the previous degradation degree to obtain the current degradation degree accumulation.
In step S104, the determination of the alarm signal from the current degradation degree accumulation includes:
judging whether the current degradation degree accumulation meets the condition of replacing the surge protection device, if so, generating replacement warning information, and pushing the replacement warning information to an operation and maintenance terminal;
and if the current degradation degree is not reached, updating information such as the degradation degree and the like, and pushing the updated information to the operation and maintenance terminal, wherein the updated information comprises information such as the current degradation degree accumulation, the number of surge impact times, the peak value, the time and the like of the current surge protection device.
Specifically, in step S104,
judging whether the current degradation degree accumulation reaches the condition for replacing the surge protection device comprises the following steps:
and comparing the current degradation rate with a maintenance degradation rate of the surge protection device by taking the current degradation degree accumulation as the current degradation rate, and comparing whether the current degradation rate is equal to or greater than the maintenance degradation rate threshold value.
More specifically, the alarm signal generated according to the current degradation degree accumulation includes replacement alarm information, maintenance information, early warning information or other information for prompting, and the alarm signal is pushed, displayed or embodied in a preset manner. If the alarm signal is pushed to the operation and maintenance terminal, the operation and maintenance personnel can know the number, the position and the abnormal condition of the abnormal surge protection device through the alarm signal, so that the operation and maintenance personnel can conveniently maintain or replace the surge protection device. Or the alarm signal is sent to the surge protection device in a wireless mode, and an alarm unit on the surge protection device sends out photoelectric alarm. Or the background service center displays the surge protection device which is in the current abnormal condition, and the background staff informs the corresponding operation and maintenance staff to carry out on-site maintenance or replacement according to the displayed alarm signal.
The following examples of the invention are further illustrated:
in a specific using process, to obtain more accurate early warning information and avoid generating worse results, the embodiment of the invention firstly detects the energy of the instantaneous surge current. In this embodiment, the ground wire of the electrical equipment is grounded after passing through the surge protection device.
In the ampere-right-hand rule in the electromagnetic field theory, B is an induced magnetic field flowing around the grounding conductor, I is a current direction on the grounding conductor, and the magnetic field flowing direction is a four-finger bending direction.
The current passing through the earth conductor generates an induced magnetic field around it, the direction of the induced magnetic field B and the direction of the current flow follow the ampere-right-hand rule. In this embodiment, in the direction in which the ground lead passes through the surge current in parallel, an induction coil having n turns of cross-sectional area S is wound, so that magnetic lines of force pass through the induction coil and an induced electromotive force is generated, and the magnitude of the induced electromotive force is:
where Δ φ is the change in magnetic flux, and Δ t is the change in time, for induced electromotive force. That is, the faster the change speed of the magnetic flux, the larger the induced electromotive force.
Under such specific conditions, the magnetic flux is calculated as:
phi BScos theta (equation 2)
Wherein B is magnetic induction intensity, S is the sectional area of the induction coil, and theta is the included angle between the plane of the induction coil and the magnetic force line.
The magnetic induction intensity of the grounding conductor is as follows:
wherein mu0＝4π×10-7N·A-2Is the permeability of vacuum (air), and r is the distance from the measuring point to the grounding wire, i.e. r is the distance from any point on the induction coil to the center of the grounding wire passing through the center.
According to the above equations 1, 2 and 3, it can be obtained that, on a fixed r-circle, the variation relationship between the induced electromotive force that can be detected within a certain transient time period Δ t (e.g. 1 μ s) and I in the same time period is:
therefore, in the present embodiment, the current change Δ I of the process can be estimated by measuring the induced electromotive force on a fixed r-circle line within a transient time period Δ t (e.g. 1 μ s), that is:
in practical engineering application, the surge current energy in a wider time is required to be obtained, the measurement result is more accurate, in practical application, the integral value of the induced electromotive force can be actually detected, and the integral of the distance r from each point on the induced conductor to the grounding conductor is required to be detected within the range of the detection sectional area S:
in the embodiment, the number of turns n, the sectional area S and the induction coil are determined by setting corresponding physical parameters of the surge current detection deviceThe included angle theta between the plane and the magnetic force line is calculated
When detected by electronic circuitry (t-t)0) And the integrating circuit detects
Therefore, transient surge current energy is detected, a data base of the most real-time data is provided for the safety measures of the electrical equipment, and early warning and pre-maintenance are carried out.
Fig. 2 shows a protection terminal of a surge protection device according to an embodiment of the present invention, including:
the surge current detection device 201 comprises an induction coil which is surrounded by induction leads to form a plurality of turns and is used for acquiring the induced electromotive force of the grounding lead passing through the middle of the induction coil in a transient time period;
the detection system 202 is configured to calculate transient surge current energy passing through the surge protection device according to the induced electromotive force, compare the transient surge current energy of the surge protection device with preset standard surge current energy to obtain a comparison result, calculate a current degradation degree of the surge protection device according to the comparison result, and determine an alarm signal according to the current degradation degree, where the alarm signal includes a current operation state of the surge protection device.
The inrush current detection device 201 and the detection system 202 perform data interaction through a wireless communication protocol.
Specifically, the detection system 202 includes:
the intensity detection unit is used for acquiring induced electromotive force of a grounding wire passing through the surge protection device in a transient time period through a surge current detection device;
the acquisition unit is used for acquiring the number of turns of an induction coil in the surge current detection device, the cross-sectional area of an induction lead and the distance from any point in the induction coil to the center of the grounding lead;
the integration unit is used for respectively integrating the induced electromotive force and the distance from any point in the induction coil to the center of the grounding wire to obtain an induced electromotive force integral value and a distance integral value;
and the calculating unit is used for calculating the energy of the transient surge current according to the transient time period, the induced electromotive force integral value, the distance integral value, the number of turns of the induction coil and the sectional area of the induction lead.
In particular, the transient time period is denoted by Δ t, which is t-t0Energy of the transient surge current and
indicating that the induced electromotive force is integrated by
Is represented by the distance integral value
When the number of turns of the induction coil is represented by n, the cross-sectional area of the induction wire is represented by S, and the included angle between the plane of the induction coil and a magnetic line is represented by theta, then:
wherein, mu0Indicating the permeability of air.
Further, the protection device 202 further includes:
the waveform searching unit is used for searching corresponding standard surge current energy in an energy corresponding table of a standard surge current waveform according to the detected transient surge current energy passing through the surge protection device, wherein the standard surge current waveform is a 8/20 mu s thunder current waveform simulated by special equipment according to a relevant standard (GB/17626.5-1999 electromagnetic compatibility test and measuring technology surge (impact) immunity test);
determining a current waveform corresponding to the transient surge current energy of the surge protection device according to the searched standard surge current energy, and taking the current waveform as the comparison result;
and the energy corresponding table stores the current waveform corresponding to each current energy.
Further, the detection system 202 further includes:
a degradation searching unit, configured to search a degradation correspondence table according to the current waveforms, and find a current degradation degree corresponding to the current waveforms in the degradation correspondence table, where a current degradation degree corresponding to each current waveform is stored in the degradation correspondence table; and adding the current degradation degree and the previous degradation degree to obtain the current degradation degree accumulation.
Further, the protection device 202 further includes:
the generation unit is used for judging whether the current degradation degree accumulation meets the condition of replacing the surge protection device, if so, generating replacement alarm information and pushing the replacement alarm information to an operation and maintenance terminal;
and if not, updating degradation degree information, and pushing the degradation degree information to an operation and maintenance terminal, wherein the degradation degree information comprises information of current degradation degree accumulation, surge impact frequency, peak value and time of the current surge protection device.
Further, the generating unit is specifically configured to:
and comparing the current degradation rate with a maintenance degradation rate of the surge protection device by taking the current degradation degree accumulation as the current degradation rate, and comparing whether the current degradation rate is equal to or greater than the maintenance degradation rate threshold value.
In the embodiment of the invention, the transient surge current energy is a numerical value, and the method carries out comparison test on the surge current detection device by gradually adjusting the magnitude of 8/20 mu s current wave in a laboratory to obtain a plurality of corresponding tables, such as an energy waveform corresponding table, a degradation rate corresponding table and the like. In the corresponding tables, each 8/20 μ s current wave I corresponds to a current energy value, and when transient surge current energy is detected, a standard 8/20 μ s current wave I can be deduced reversely. More specifically, in the application, the endurance capacity of the SPD is obtained by testing the SPD with different 8/20 μ s current waves in a laboratory, so that the corresponding relation between the degradation rate and different 8/20 μ s current waves is obtained. In the embodiment, the surge protection device is protected according to the steps of detecting transient surge current energy, obtaining a corresponding 8/20 mu s current wave by looking up a table, obtaining a degradation rate by looking up a table, detecting once and accumulating once, accumulating to a set value, and alarming or replacing.
In the several embodiments provided in the present application, it should be understood that the disclosed method and system may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, systems or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method 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.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are presently preferred and that no acts or elements are necessarily required of the invention.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the above description, for a person skilled in the art, there are variations on the specific implementation and application range according to the concepts of the embodiments of the present invention, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A method of detecting a degradation rate of a surge protection device, comprising:
acquiring transient surge current energy passing through a surge protection device;
comparing the transient surge current energy of the surge protection device with preset standard surge current energy to obtain a comparison result;
determining the current degradation degree of the surge protection device according to the comparison result, and accumulating the current degradation degree;
determining an alarm signal according to the current degradation degree accumulation, wherein the alarm signal comprises the current operation state of the surge protection device;
wherein the content of the first and second substances,
the acquiring transient surge current energy passing through the surge protection device comprises:
acquiring induced electromotive force of a grounding wire passing through the surge protection device in a transient time period through a surge current detection device;
acquiring the number of turns of an induction coil in the surge current detection device, the cross-sectional area of an induction lead and the distance from any point in the induction coil to the center of the grounding lead;
respectively integrating the induced electromotive force and the distance from any point in the induction coil to the center of the grounding wire to obtain an induced electromotive force integral value and a distance integral value;
and calculating the transient surge current energy according to the transient time period, the induced electromotive force integral value, the distance integral value, the number of turns of the induction coil and the sectional area of the induction lead.
2. The degradation rate detection method according to claim 1, wherein the transient period is represented by Δ t, which is t-t0Energy of the transient surge current and
indicating that the induced electromotive force is integrated by
Is represented by the distance integral value
Showing the turns of said induction coilThe number is represented by n, the cross section area of the induction lead is represented by S, the included angle between the plane of the induction coil and the magnetic line is represented by theta, and then:
wherein, mu0Denotes the permeability of air and I denotes the transient surge current.
3. The degradation rate detection method according to claim 1, wherein the comparing the transient surge current energy of the surge protection device with a preset standard surge current energy comprises:
according to the detected transient surge current energy passing through the surge protection device, searching corresponding standard surge current energy in an energy corresponding table of a standard surge current waveform;
determining a current waveform corresponding to the transient surge current energy of the surge protection device according to the searched standard surge current energy, and taking the current waveform as the comparison result;
and the energy corresponding table stores the current waveform corresponding to each current energy.
4. The degradation rate detection method of claim 3, wherein determining a current degradation level of the surge protection device based on the comparison and performing current degradation level accumulation comprises:
searching a degradation corresponding table according to the current waveform, and finding a current degradation degree corresponding to the current waveform in the degradation corresponding table, wherein the current degradation degree corresponding to each current waveform is stored in the degradation corresponding table;
and adding the current degradation degree and the previous degradation degree to obtain the current degradation degree accumulation.
5. The degradation rate detection method according to claim 4, wherein said determining an alarm signal according to the current degradation degree accumulation includes:
judging whether the current degradation degree accumulation meets the condition of replacing the surge protection device, if so, generating replacement warning information, and pushing the replacement warning information to an operation and maintenance terminal;
and if not, updating degradation degree information, and pushing the degradation degree information to an operation and maintenance terminal, wherein the degradation degree information comprises information of current degradation degree accumulation, surge impact frequency, peak value and time of the current surge protection device.
6. The degradation rate detection method of claim 5, wherein the determining whether the current degradation level accumulation meets a condition for replacement of the surge protection device comprises:
and comparing the current degradation rate with a maintenance degradation rate of the surge protection device by taking the current degradation degree accumulation as the current degradation rate, and comparing whether the current degradation rate is equal to or greater than the maintenance degradation rate threshold value.
7. A degradation rate detection system of a surge protection device, comprising:
the surge current detection device comprises an induction coil which is surrounded by induction leads to form a plurality of turns and is used for acquiring the induced electromotive force of the grounding lead passing through the middle of the induction coil in a transient time period;
the detection system is used for calculating transient surge current energy passing through the surge protection device according to the induced electromotive force, comparing the transient surge current energy of the surge protection device with preset standard surge current energy to obtain a comparison result, calculating the current degradation degree of the surge protection device according to the comparison result, accumulating the current degradation degree, and determining an alarm signal according to the current degradation degree accumulation, wherein the alarm signal comprises the current running state of the surge protection device;
the detection system acquires the number of turns of an induction coil in the surge current detection device, the cross-sectional area of an induction wire and the distance from any point in the induction coil to the center of the grounding wire; respectively integrating the induced electromotive force and the distance from any point in the induction coil to the center of the grounding wire to obtain an induced electromotive force integral value and a distance integral value; and calculating the transient surge current energy according to the transient time period, the induced electromotive force integral value, the distance integral value, the number of turns of the induction coil and the sectional area of the induction lead.
8. A system for detecting the degradation rate of a surge protection device, comprising a terminal, wherein the terminal comprises a memory, a processor and a computer program stored in the memory and running on the processor, and the processor executes the computer program to realize the steps of the method for detecting the degradation rate of a surge protection device according to any one of claims 1 to 7, and present information and an alarm.
9. A degradation rate detection system of an surge protection device, comprising a readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the degradation rate detection method of the surge protection device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042794.0A CN109799404B (en) | 2019-01-17 | 2019-01-17 | Method and system for detecting degradation rate of surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042794.0A CN109799404B (en) | 2019-01-17 | 2019-01-17 | Method and system for detecting degradation rate of surge protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109799404A CN109799404A (en) | 2019-05-24 |
| CN109799404B true CN109799404B (en) | 2021-01-05 |
Family
ID=66559547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910042794.0A Active CN109799404B (en) | 2019-01-17 | 2019-01-17 | Method and system for detecting degradation rate of surge protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109799404B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426607A (en) * | 2019-06-03 | 2019-11-08 | 江苏德大石化科技有限公司 | The monitoring system of arc flash occurs for a kind of identification lightning current |
| CN111880056A (en) * | 2020-07-10 | 2020-11-03 | 交控科技股份有限公司 | Method and device for detecting use state of lightning protection module in rail transit |
| CN112230100B (en) * | 2020-09-29 | 2022-01-11 | 山东大学 | Slow-development permanent fault early warning method and system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029074B2 (en) * | 1977-08-19 | 1985-07-08 | 三菱電機株式会社 | Lightning arrester deterioration detection method |
| CN201466711U (en) * | 2009-07-06 | 2010-05-12 | 孙巍巍 | Surge protector with detection device |
| CN201852876U (en) * | 2010-09-26 | 2011-06-01 | 广州中光电子科技有限公司 | Integral lightning protection module with functions of leakage current detection and discharge frequency |
| CN102298108B (en) * | 2011-05-25 | 2013-11-06 | 重庆大学 | Impact characteristic simulation test apparatus of earthing device and method thereof |
| KR101413561B1 (en) * | 2012-11-14 | 2014-07-04 | 한국전기연구원 | Reliability Estimation Apparatus and Method of Surge Protective Device for Power and Signal |
| CN103852659A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel SPD on-line detection device |
| CN104267305B (en) * | 2014-09-25 | 2015-10-14 | 深圳市科威特斯特科技股份有限公司 | A kind of method and system judging Surge Protector SPD degradation |
| CN105334410A (en) * | 2015-10-10 | 2016-02-17 | 安徽中普盛德电子科技有限公司 | SPD deterioration degree monitoring device |
| CN205720407U (en) * | 2016-04-13 | 2016-11-23 | 上海臻和防雷电气技术有限责任公司 | A kind of detection equipment monitoring lightning protection device number of lightning strokes and thunderbolt intensity |
| CN108445315A (en) * | 2018-02-11 | 2018-08-24 | 深圳市安信技术有限公司 | A kind of algorithm of zinc oxide lightning protection device service life |
-
2019
- 2019-01-17 CN CN201910042794.0A patent/CN109799404B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109799404A (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109799404B (en) | Method and system for detecting degradation rate of surge protection device | |
| FI107083B (en) | Method and arrangement for detecting the cause of a partial discharge | |
| US20160187406A1 (en) | Method and system for identifying lightning fault and the type thereof in the overhead transmission line | |
| CN107727990B (en) | Distribution network arc light grounding fault identification method | |
| KR101519923B1 (en) | A partial discharge detection system for a distributing board with the acoustic emission sensor | |
| CN107505539B (en) | Distribution network arc light grounding fault identification method | |
| KR101648308B1 (en) | Apparatus and method for detecting high impedance fault in low voltage dc power distribution system | |
| CN108195461B (en) | Online monitoring method, device and system for reactor vibration | |
| CN108983060A (en) | arrester detecting device and system | |
| Grassetti et al. | Low cost arc fault detection in aerospace applications | |
| CN114778959A (en) | Intelligent lightning protection real-time online monitoring system | |
| JP2012103209A (en) | Lightning charge amount calculation system and lightning charge amount calculation method | |
| KR101099788B1 (en) | Apparatus and method of determinating lightening induced flashover in transmission lines | |
| KR100937363B1 (en) | Power distributing board having function of real-time insulation sensing and error point detecting for power equipment | |
| CN110456123B (en) | Broadband transient voltage division measuring device and method | |
| JP6118627B2 (en) | Vacuum leak monitoring device for vacuum valve | |
| US11921170B2 (en) | Protection of low-voltage distribution networks | |
| CN104614578A (en) | Method and system for determining wave-head time | |
| CN110596545A (en) | Partial discharge detection device and detection method based on combined action of alternating current and impulse voltage | |
| JP2014013164A (en) | Failure detection method of lightning protection device | |
| CN104833841A (en) | Substation intrusion overvoltage detection method | |
| CN114859181A (en) | Fault monitoring method, device and system for power transmission line | |
| CN112485720B (en) | Cable insulation defect detection method and device | |
| KR20060110850A (en) | Apparatus for pinpointing short circuit in live state and method thereof | |
| CN208833872U (en) | Arrester detecting device and system |
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 |