CN104748842A - Online detection method and system for arc sensor - Google Patents
Online detection method and system for arc sensor Download PDFInfo
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- CN104748842A CN104748842A CN201510144603.3A CN201510144603A CN104748842A CN 104748842 A CN104748842 A CN 104748842A CN 201510144603 A CN201510144603 A CN 201510144603A CN 104748842 A CN104748842 A CN 104748842A
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Abstract
The invention discloses an online detection method and system for an arc sensor. A light source trigger is coupled to the optical sensor receiving end of the arc sensor and sends out an optical signal; light-sensitive material of the optical sensor receiving end reflects the optical signal that the light source trigger sends out; a fiber channel transmits the reflected optical signal to a detector; the detector converts a received optical analog signal into a digital signal and compares the digital signal with preset optical characteristic parameters, thereby judging the operating state of the arc sensor. The invention further provides the online detection system. The online detection method and system is available for monitoring the operating state of the arc sensor online, allows the operating state of the arc sensor to be quickly and accurately detected, allows the faulted arc sensor to be replaced in time, and prevents an arc protector from rejecting action due to the fault of the arc sensor.
Description
Technical field
The invention belongs to field of power, particularly a kind of arc photosensor detection method and system.
Background technology
Along with the development of optical technology, utilize the arc light protecting device that the arclight produced during fault is developed as criterion, because it can identify fault fast and accurately, be applied in middle-low voltage switch cabinet more and more, for the protection of primary equipment.At present, arc light protecting device is gathered the arclight sent during fault by arc photosensor, then carry out comprehensive comparative analysis to criterions such as light signals, thus judge whether arclight fault occurs.Therefore, as the core component of arc light protecting device, can the quality of arc photosensor operation conditions directly determine arc light protecting device and work safely, reliably.
As inactive component, arc photosensor cannot himself operation conditions of Real-time Feedback.Therefore, after arc photosensor breaks down, once can not change in time arc photosensor, the arclight produced when arc photosensor can not occur fault correctly gathers, and then cannot realize the correct response of arc light protecting device.
In sum, the quality of arc photosensor determines the performance of arc light protecting device, and the real time monitoring of arc photosensor situation is significant for the correct response of arc light protecting device.
Summary of the invention
Object of the present invention, is the online test method providing a kind of arc photosensor, is specifically designed to the operation conditions of monitoring arc photosensor.Its method relies on and is coupled in the light source flip flop equipment at light signal receiving end place, and the light pulse signal continuing to send is reflected to pick-up unit, then by comparing judgement with the optical property parameter preset, to determine arc photosensor whether normal operation.
In order to reach above-mentioned purpose, technical scheme of the present invention is: a kind of online test method of arc photosensor, is characterized in that: comprise the steps:
(1) at the optical sensor receiving end place coupling light source flip flop equipment of arc photosensor, light source flip flop equipment sends light signal;
(2) utilize optical sensor receiving end to reflect the light signal that light source flip flop equipment sends, by optical-fibre channel, the light signal of reflection is delivered to pick-up unit;
(3) pick-up unit converts the optical analog signal received to digital signal, compares, thus judge the running status of arc photosensor with the optical property parameter preset.
In such scheme: the light source flip flop equipment in described step (1), and continues to send adjustable light pulse signal in optical sensor receiving end place by coupling fiber.
In such scheme: the adjustment content of described adjustable light pulse signal is the optical characteristics of light pulse, includes but not limited to intensity, frequency, pulsewidth.
In such scheme: in described step (2), utilize the photoactive substance in optical sensor receiving end to be reflected by the light signal that light source flip flop equipment sends, and by the optical-fibre channel of arc photosensor, the light signal reflected is delivered in pick-up unit.
In such scheme: in described step (3), pick-up unit converts received optical analog signal to digital signal, comprise optical pulse intensity parameter, frequency parameter and width parameter with the optical property parameter preset to compare, for judging the operation conditions of arc photosensor.
In such scheme: described optical pulse intensity parameter, frequency parameter and width parameter draw according to the characteristics of signals of the light pulse signal that light source flip flop equipment sends:
Wherein, optical pulse frequency parameter and width parameter are that the optical pulse frequency that sends according to light source flip flop equipment and pulsewidth are determined; Optical pulse intensity parameter can obtain according to following formula:
E
set＝k
0×k
1×e
Wherein, the implication of each symbol is as follows:
E
setit is light intensity parameter;
K
0be safety factor, setting range is 0.6 ~ 0.9;
K
1be optical signal transmission attenuation coefficient, setting range is 0.5 ~ 1;
E is the light signal strength that light source flip flop equipment sends.
In such scheme: the comparative approach of described light intensity adopts light intensity method of addition, the amount of uprushing based on surround lighting namely utilizing light pulse to produce and optical pulse intensity parameter compare, and can get rid of surround lighting residing for arc photosensor like this to the interference of detection.
The present invention also provides a kind of on-line detecting system of arc photosensor, it is characterized in that comprising light source flip flop equipment, arclight sensor, arclight sensor detecting device, wherein:
Described light source flip flop equipment continues to send adjustable light pulse signal, for the detection of arc photosensor provides light signal;
The light sensing of described arclight sensor answers the photoactive substance in receiving end to be reflected by light signal, and provides optical-fibre channel for the transmission of light signal;
Described arclight sensing detection device is used for the reception of light signal, conversion, the calculating of criterion and the operation conditions of arc photosensor and judges;
Described arclight sensing detection device comprises optical signal receiving module, photoelectric conversion module, computing module, judge module;
Described optical signal receiving module is for receiving the optical analog signal of transmission;
Described photoelectric conversion module is used for optical analog signal to be converted to digital signal;
Described computing module is used for the result according to photoelectric conversion module, calculates light signal criterion;
Described judge module is used for the result according to computing module, judges whether arc photosensor is normal operating condition, if light signal criterion is greater than default optical pulse intensity parameter, frequency parameter and width parameter, thinks that arc photosensor normally runs; If light signal criterion is less than default optical pulse intensity parameter, frequency parameter and width parameter, then think that arc photosensor breaks down.
In such scheme: described light source flip flop equipment, and continues to send adjustable light pulse signal in optical sensor receiving end place by coupling fiber.
In such scheme: the adjustment content of described adjustable light pulse signal is the optical characteristics of light pulse, includes but not limited to intensity, frequency, pulsewidth.
In such scheme: the light signal that light source flip flop equipment sends reflects by the described photoactive substance in optical sensor receiving end that utilizes, and is delivered among pick-up unit by the optical-fibre channel of arc photosensor.
In such scheme: pick-up unit converts received optical analog signal to digital signal, comprise optical pulse intensity parameter, frequency parameter and width parameter with the optical property parameter preset and compare, for the operation conditions of Real-Time Monitoring arc photosensor.
In such scheme: the characteristics of signals that described default optical pulse intensity parameter, frequency parameter and width parameter are dependent on the light pulse signal that light source flip flop equipment sends draws:
Wherein, optical pulse frequency parameter and width parameter are that the pulsed frequency of the light signal sent according to light source flip flop equipment and width are determined; Optical pulse intensity parameter can obtain according to following formula:
E
set＝k
0×k
1×e
Wherein, the implication of each symbol is as follows:
E
setit is light intensity parameter;
K
0be safety factor, setting range is 0.6 ~ 0.9;
K
1be optical signal transmission attenuation coefficient, setting range is 0.5 ~ 1;
E is the light signal strength that light source flip flop equipment sends.
In such scheme: the comparative approach of described light intensity adopts light intensity method of addition, namely the amount of uprushing based on surround lighting utilizing light pulse to produce and optical pulse intensity parameter compare, and can get rid of the interference of the surround lighting residing for arc photosensor for detection like this.
Beneficial effect of the present invention is: the present invention is used for the operation conditions of on-line monitoring arc photosensor; it can detect the operation conditions of arc photosensor quickly and accurately; be convenient to change fault arc photosensor in time, prevent arc light protecting device because of the fault of arc photosensor and tripping occurs.
Accompanying drawing explanation
Fig. 1 is the structural representation of arc photosensor on-line detecting system involved in the present invention; In figure, a-light source flip flop equipment; The optical sensor receiving end of b-arc photosensor; The optical-fibre channel of c-arc photosensor; D-pick-up unit.
Fig. 2 is the pick-up unit logical diagram of the embodiment of the present invention; In figure, e-optical pulse intensity criterion, f-optical pulse frequency criterion, g-optical pulse width criterion, h-AND gate operation logic, i-definites time-lag time delay logic, j-arc photosensor status signals.
Fig. 3 is the structure of the detecting device figure of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, technical scheme of the present invention is described in detail.
The invention provides a kind of online test method of arc photosensor, comprise the steps:
(1) at the optical sensor receiving end place coupling light source flip flop equipment of arc photosensor, light source flip flop equipment sends light signal;
(2) utilize the photoactive substance in optical sensor receiving end to be reflected by the light signal that light source flip flop equipment sends, and by optical-fibre channel, the light signal reflected is delivered among pick-up unit;
(3) pick-up unit converts the optical analog signal received to digital signal, compares with the optical property parameter preset, to judge the operation conditions of arc photosensor.
Below the light signal that light source flip flop equipment sends is introduced in detail.The light signal that light source flip flop equipment sends is adjustable light pulse signal, namely has the light-pulse generator of optical characteristics regulatory function, and it can regulate the intensity of light pulse, frequency and width etc. according to factors such as the optical-fibre channel length of arc photosensor.Because bias light and arc light are continuous light signal or high light signal, the light pulse signal that therefore selection intensity is adjustable is as detection light, and making to detect light can not affect by bias light, the arc optical signal produced when simultaneously also can not affect electric power system fault.
In such scheme, the optical-fibre channel of communicating optical signals should share with the optical-fibre channel of arc photosensor, both could monitor the situation of arc photosensor receiving end like this, can detect the quality of the optical-fibre channel of arc photosensor again simultaneously;
The optical property parameter preset in such scheme should according to light source trigger send light signal optical characteristics carry out calculating and adjust.It should be noted that embodiment that Fig. 2 provides is preferably embodiment, wherein, optical pulse intensity, frequency and pulsewidth criterion can act on simultaneously, also can selectively acting; Time delay logic can be removed, and directly sends arc photosensor operation conditions signal.
Pick-up unit in such scheme can be independently arc photosensor pick-up unit, is reflected the running status of arc photosensor by various ways such as rhabdion point, communication, displays, also can as a kind of function of protective device.
After adopting method of the present invention, the operation conditions of arc photosensor can be detected quickly and accurately, be convenient to change arc photosensor in time, prevent arc light protecting device because of the fault of arc photosensor and tripping occurs.
In addition, the embodiment of the present invention also provides a kind of on-line detecting system of arc photosensor, comprises light source flip flop equipment, arclight sensor, arclight sensor detecting device, wherein:
Described light source flip flop equipment continues to send adjustable light pulse signal, for the detection of arc photosensor provides light signal;
The light sensing of described arclight sensor answers receiving end light signal can be reflected, and the transmission that the optical-fibre channel of arclight sensor is light signal provides approach;
Described arclight sensing detection device is used for the judgement of the reception of light signal, conversion, the calculating of criterion and the operation conditions of arc photosensor;
Described arclight sensing detection device, as shown in Figure 3, comprises optical signal receiving module, photoelectric conversion module, computing module, judge module;
Described optical signal receiving module is for receiving the optical analog signal of transmission;
Described photoelectric conversion module is used for optical analog signal to be converted to digital signal;
Described computing module is used for the result according to photoelectric conversion module, calculates light signal criterion;
Described judge module is used for the result according to computing module, judges whether arc photosensor is normal operating condition, if light signal criterion is greater than default optical pulse intensity parameter, frequency parameter and width parameter, thinks that arc photosensor normally runs; If light signal criterion is less than default optical pulse intensity parameter, frequency parameter and width parameter, then think that arc photosensor breaks down.
In order to set forth guard method of the present invention, enumerate following examples, this embodiment is only described the ruuning situation of several arc photosensor:
1) when arc photosensor normally runs, the light pulse signal that light source flip flop equipment produces is reflexed to the optical-fibre channel of arc photosensor by the photoactive substance in optical sensor receiving end, pick-up unit is entered by optical-fibre channel transmission, the light signal received is converted to digital signal by pick-up unit, when it is greater than default optical property parameter, pick-up unit display arc photosensor normally runs.
2) when the optical sensor receiving end of arc photosensor breaks down, the light pulse signal that light source flip flop equipment produces cannot be reflexed to the optical-fibre channel of arc photosensor by the photoactive substance in optical sensor receiving end, pick-up unit judges that the optical characteristics received is less than default optical property parameter, and pick-up unit display arc photosensor breaks down.
3) when the optical-fibre channel of arc photosensor breaks down, although the light pulse signal that light source flip flop equipment produces is reflexed to the optical-fibre channel of arc photosensor by the photoactive substance in optical sensor receiving end, but cannot or only have a little light signal to be delivered to pick-up unit, pick-up unit judges that the optical characteristics received is less than default optical property parameter, and pick-up unit display arc photosensor breaks down.
Above embodiment is only and technological thought of the present invention is described, protection scope of the present invention can not be limited with this, in this protection scheme, light source flip flop equipment can be coupled with optical sensor receiving end by optical fiber, and light sensing receiving end itself also can be made to have light source Trigger Function; Optical sensor receiving end can adopt the photoactive substances such as metal oxide to carry out the reflection of light signal; The criterion of optical characteristics can be not limited to above-mentioned several optical characteristics, and other optical characteristics such as the power of light, the wavelength of light can also be utilized as criterion.Every technological thought proposed according to the present invention, any change that technical method basis is done, all falls within scope.
Claims (14)
1. an online test method for arc photosensor, is characterized in that: comprise the steps:
(1) at the optical sensor receiving end place coupling light source flip flop equipment of arc photosensor, light source flip flop equipment sends light signal;
(2) utilize optical sensor receiving end to reflect the light signal that light source flip flop equipment sends, by optical-fibre channel, the light signal of reflection is delivered to pick-up unit;
(3) pick-up unit converts the optical analog signal received to digital signal, compares, thus judge the running status of arc photosensor with the optical property parameter preset.
2. the online test method of a kind of arc photosensor as claimed in claim 1, is characterized in that: the light source flip flop equipment in described step (1), and continues to send adjustable light pulse signal in optical sensor receiving end place by coupling fiber.
3. the online test method of a kind of arc photosensor as claimed in claim 2, is characterized in that: the adjustment content of described adjustable light pulse signal is the optical characteristics of light pulse, includes but not limited to intensity, frequency, pulsewidth.
4. the online test method of a kind of arc photosensor as claimed in claim 1, it is characterized in that: in described step (2), utilize the photoactive substance in optical sensor receiving end to be reflected by the light signal that light source flip flop equipment sends, and by the optical-fibre channel of arc photosensor, the light signal reflected is delivered in pick-up unit.
5. the online test method of a kind of arc photosensor as claimed in claim 1, it is characterized in that: in described step (3), pick-up unit converts received optical analog signal to digital signal, comprise optical pulse intensity parameter, frequency parameter and width parameter with the optical property parameter preset to compare, for judging the operation conditions of arc photosensor.
6. the online test method of a kind of arc photosensor as claimed in claim 5, is characterized in that: described optical pulse intensity parameter, frequency parameter and width parameter draw according to the characteristics of signals of the light pulse signal that light source flip flop equipment sends:
Wherein, optical pulse frequency parameter and width parameter are that the optical pulse frequency that sends according to light source flip flop equipment and pulsewidth are determined; Optical pulse intensity parameter can obtain according to following formula:
E
set＝k
0×k
1×e
Wherein, the implication of each symbol is as follows:
E
setit is light intensity parameter;
K
0be safety factor, setting range is 0.6 ~ 0.9;
K
1be optical signal transmission attenuation coefficient, setting range is 0.5 ~ 1;
E is the light signal strength that light source flip flop equipment sends.
7. the online test method of a kind of arc photosensor as claimed in claim 5, it is characterized in that: the comparative approach of described light intensity adopts light intensity method of addition, namely the amount of uprushing based on surround lighting utilizing light pulse to produce and optical pulse intensity parameter compare, and can get rid of surround lighting residing for arc photosensor like this to the interference detected.
8. an on-line detecting system for arc photosensor, is characterized in that comprising light source flip flop equipment, arclight sensor, arclight sensor detecting device, wherein:
Described light source flip flop equipment continues to send adjustable light pulse signal, for the detection of arc photosensor provides light signal;
The light sensing of described arclight sensor answers the photoactive substance in receiving end to be reflected by light signal, and provides optical-fibre channel for the transmission of light signal;
Described arclight sensing detection device is used for the reception of light signal, conversion, the calculating of criterion and the operation conditions of arc photosensor and judges;
Described arclight sensing detection device comprises optical signal receiving module, photoelectric conversion module, computing module, judge module;
Described optical signal receiving module is for receiving the optical analog signal of transmission;
Described photoelectric conversion module is used for optical analog signal to be converted to digital signal;
Described computing module is used for the result according to photoelectric conversion module, calculates light signal criterion;
Described judge module is used for the result according to computing module, judges whether arc photosensor is normal operating condition, if light signal criterion is greater than default optical pulse intensity parameter, frequency parameter and width parameter, thinks that arc photosensor normally runs; If light signal criterion is less than default optical pulse intensity parameter, frequency parameter and width parameter, then think that arc photosensor breaks down.
9. the on-line detecting system of a kind of arc photosensor as claimed in claim 8, is characterized in that: described light source flip flop equipment, and continues to send adjustable light pulse signal in optical sensor receiving end place by coupling fiber.
10. the on-line detecting system of a kind of arc photosensor as claimed in claim 9, is characterized in that: the adjustment content of described adjustable light pulse signal is the optical characteristics of light pulse, includes but not limited to intensity, frequency, pulsewidth.
The on-line detecting system of 11. a kind of arc photosensors as claimed in claim 8, it is characterized in that: the light signal that light source flip flop equipment sends reflects by the described photoactive substance in optical sensor receiving end that utilizes, and is delivered among pick-up unit by the optical-fibre channel of arc photosensor.
The on-line detecting system of 12. a kind of arc photosensors as claimed in claim 8, it is characterized in that: pick-up unit converts received optical analog signal to digital signal, comprise optical pulse intensity parameter, frequency parameter and width parameter with the optical property parameter preset to compare, for the operation conditions of Real-Time Monitoring arc photosensor.
The on-line detecting system of 13. a kind of arc photosensors as claimed in claim 12, is characterized in that: the characteristics of signals that described default optical pulse intensity parameter, frequency parameter and width parameter are dependent on the light pulse signal that light source flip flop equipment sends draws:
Wherein, optical pulse frequency parameter and width parameter are that the pulsed frequency of the light signal sent according to light source flip flop equipment and width are determined; Optical pulse intensity parameter can obtain according to following formula:
E
set＝k
0×k
1×e
Wherein, the implication of each symbol is as follows:
E
setit is light intensity parameter;
K
0be safety factor, setting range is 0.6 ~ 0.9;
K
1be optical signal transmission attenuation coefficient, setting range is 0.5 ~ 1;
E is the light signal strength that light source flip flop equipment sends.
The on-line detecting system of 14. a kind of arc photosensors as claimed in claim 12, it is characterized in that: the comparative approach of described light intensity adopts light intensity method of addition, namely the amount of uprushing based on surround lighting utilizing light pulse to produce and optical pulse intensity parameter compare, and can get rid of the interference of the surround lighting residing for arc photosensor for detection like this.
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| CN201510144603.3A CN104748842A (en) | 2015-03-30 | 2015-03-30 | Online detection method and system for arc sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510144603.3A CN104748842A (en) | 2015-03-30 | 2015-03-30 | Online detection method and system for arc sensor |
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| CN201510144603.3A Pending CN104748842A (en) | 2015-03-30 | 2015-03-30 | Online detection method and system for arc sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106706659A (en) * | 2016-12-22 | 2017-05-24 | 武汉理工光科股份有限公司 | Digital detection system and method for flame detector |
| CN108828489A (en) * | 2018-06-28 | 2018-11-16 | 西门子电力自动化有限公司 | Arc light acquisition module fault detection method, device and readable storage medium storing program for executing |
| CN112213589A (en) * | 2020-10-20 | 2021-01-12 | 国网江苏省电力有限公司 | Online detection system and method for arc light protection device |
| CN115371730A (en) * | 2022-08-15 | 2022-11-22 | 四川杰诺创科技有限公司 | System and method for accurately detecting working state of high-power gyroscope |
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| CN112213589A (en) * | 2020-10-20 | 2021-01-12 | 国网江苏省电力有限公司 | Online detection system and method for arc light protection device |
| CN115371730A (en) * | 2022-08-15 | 2022-11-22 | 四川杰诺创科技有限公司 | System and method for accurately detecting working state of high-power gyroscope |
| CN115371730B (en) * | 2022-08-15 | 2023-10-31 | 四川杰诺创科技有限公司 | High-power gyrator working state accurate detection system and method |
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Application publication date: 20150701 |