CN109406972A - A kind of switchgear state of insulation combined monitoring method - Google Patents
A kind of switchgear state of insulation combined monitoring method Download PDFInfo
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- CN109406972A CN109406972A CN201811514997.7A CN201811514997A CN109406972A CN 109406972 A CN109406972 A CN 109406972A CN 201811514997 A CN201811514997 A CN 201811514997A CN 109406972 A CN109406972 A CN 109406972A
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- insulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
Abstract
This application discloses a kind of switchgear state of insulation combined monitoring methods, comprising: switchgear state of insulation is divided into multiple state of insulation grades；Calculate the probability that ultrahigh-frequency signal is under the jurisdiction of each state of insulation grade；Calculate the probability that optical signal is under the jurisdiction of each state of insulation grade；The combined probability for calculating superfrequency detection and fiber laser arrays is distributed；Preset threshold is set, and when the combined probability for being under the jurisdiction of a certain state of insulation grade is greater than the threshold value, the switchgear state of insulation of judgement this time acquisition is under the jurisdiction of the state of insulation grade.Technical solution provided by the present application is using ultrahigh-frequency signal detection and optical signal detecting combined monitoring, and information fusion is carried out by evidence theory, compare switchgear historical data, it obtains detecting the state of insulation assessed jointly with two kinds of detection methods of optical signal detecting by ultrahigh-frequency signal, it is more accurate to the assessment of switchgear state of insulation to this method is made.
Description
Technical field
This application involves switchgear technical field more particularly to a kind of switchgear state of insulation combined monitoring methods.
Background technique
Switchgear is the important component in distribution network using wide in China's industrial circle, reliable and stable
It works most important.
With switchgear long-play, by surrounding environment influence, cabinet interior insulation state is gradually degraded, if not to switchgear
Status monitoring is carried out in time, is likely to result in later period unforeseen accident.Occur insulation defect when, inside can generate part
Discharge signal.By the detection to local discharge signal, the insulation defect in switchgear can be predicted in advance, further generated
Before more serious insulation fault, switchgear is overhauled, biggish economic loss can be avoided the occurrence of.
But existing detection method its accuracy rate remains to be discussed.The data that most detection method means use from
Laboratory is unable to get application at the scene；And the Limited information that single detection method obtains, since state of insulation is put by part
The existing signal multiplicity of ammeter, single signal can not make accurate assessment to switchgear state of insulation.
Summary of the invention
This application provides a kind of switchgear state of insulation combined monitoring methods, can not be split to solve existing detection method
Close the technical issues of cabinet state of insulation makes accurate assessment.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
The embodiment of the present application discloses a kind of switchgear state of insulation combined monitoring method, comprising: switchgear insulate shape
State is divided into multiple state of insulation grades；
Calculate the probability that ultrahigh-frequency signal is under the jurisdiction of each state of insulation grade；
Calculate the probability that optical signal is under the jurisdiction of each state of insulation grade；
The combined probability for calculating superfrequency detection and fiber laser arrays is distributed；
Preset threshold is set, when the combined probability for being under the jurisdiction of a certain state of insulation grade is greater than the threshold value, is sentenced
The switchgear state of insulation of disconnected this time acquisition is under the jurisdiction of the state of insulation grade.
Optionally, described switchgear state of insulation is divided into multiple state of insulation grades to include:
Switchgear historical data is arranged, history ultrahigh-frequency signal energy value is obtained by data processing, utilizes clustering
Switchgear state of insulation is divided into four state of insulation grades: R0 (normal), R1 (alert status), R2 (slight insulation event
Barrier), R3 (serious Insulation Problems), and obtain the ultrahigh-frequency signal central energy value c of each grade0、c1、c2、c3；
Switchgear historical data is arranged, history light signal energy value is obtained by data processing, will be opened using clustering
It closes cabinet state of insulation and is divided into four state of insulation grades: R0 (normal), R1 (alert status), R2 (slight insulation fault), R3
(serious Insulation Problems), and obtain the optical signal central energy value d of each grade0、d1、d2、d3。
Optionally, it is described calculate ultrahigh-frequency signal and be under the jurisdiction of the probability of each state of insulation grade include:
Generated ultrahigh-frequency signal when using extra-high video sensor acquisition shelf depreciation；
The ultrahigh-frequency signal is filtered, removes dryness processing；
Ultrahigh-frequency signal after calculation processing is subordinate to the probability for being belonging respectively to R0, R1, R2, R3, calculation formula are as follows:
In formula (1), PjIt is under the jurisdiction of the probability of Rj for the state of insulation of this acquisition ultrahigh-frequency signal, treated for x representative
Ultrahigh-frequency signal energy value, cjState of insulation grade is represented as the ultrahigh-frequency signal central energy value of Rj, ciRepresent state of insulation etc.
Grade is the ultrahigh-frequency signal central energy value of Ri.
Optionally, it is described calculate optical signal and be under the jurisdiction of the probability of each state of insulation grade include:
Switchgear optical signal is acquired using fibre optical sensor；
Collected optical signal is coupled to ordinary optic fibre by fiber coupler to transmit, is turned by photoelectric sensor
It is melted into electric signal, treated acquisition light signal energy value；
Light signal energy value after calculation processing is under the jurisdiction of the probability of R0, R1, R2, R3, calculation formula respectively are as follows:
In formula (2), QkIt is under the jurisdiction of the probability of Rk for state of insulation of this acquisition optical signal, y represents that treated light letter
Number energy value, dlState of insulation grade is represented as the optical signal central energy value of Rl, dkState of insulation grade is represented to believe as the light of Rk
Number central energy value.
Optionally, it is described calculate superfrequency detection and optical signal detecting combined probability distribution include: using evidence theory,
Extra-high video sensor and the collected effective information of fibre optical sensor are merged, normaliztion constant, calculation formula are calculated are as follows:
In formula (3), PiIt is under the jurisdiction of the probability of Ri, Q for the state of insulation of this acquisition ultrahigh-frequency signaliLight is acquired for this
The state of insulation of signal is under the jurisdiction of the probability of Ri, and K is normaliztion constant；
Calculate combined probability distribution, calculation formula are as follows:
In formula (4), P (Ri) is the combined probability for being under the jurisdiction of Ri, PiState of insulation for this acquisition ultrahigh-frequency signal is subordinate to
Belong to the probability of Ri, QiIt is under the jurisdiction of the probability of Ri for the state of insulation of this acquisition optical signal.
Optionally, the setting preset threshold is according to the order of accuarcy given threshold to switchgear insulation state monitoring.
Compared with prior art, the application has the beneficial effect that
This application provides a kind of switchgear state of insulation combined monitoring methods, comprising: divides switchgear state of insulation
For multiple state of insulation grades；Calculate the probability that ultrahigh-frequency signal is under the jurisdiction of each state of insulation grade；Optical signal is calculated to be under the jurisdiction of
The probability of each state of insulation grade；The combined probability for calculating superfrequency detection and fiber laser arrays is distributed；Preset threshold is set, person in servitude is worked as
When belonging to the combined probability of a certain state of insulation grade greater than the threshold value, the switchgear state of insulation of judgement this time acquisition
It is under the jurisdiction of the state of insulation grade.Technical solution provided by the present application combines prison with optical signal detecting using ultrahigh-frequency signal detection
It surveys, and information fusion is carried out by evidence theory, compare switchgear historical data, obtain by ultrahigh-frequency signal detection and optical signal
The state of insulation that two kinds of detection methods are assessed jointly is detected, to making this method to the assessment of switchgear state of insulation compared with subject to
Really.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of flow diagram of switchgear insulation state monitoring method provided by the embodiments of the present application.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field
The application protection all should belong in art personnel every other embodiment obtained without making creative work
Range.
It is a kind of flow diagram of switchgear insulation state monitoring method provided by the embodiments of the present application referring to Fig. 1；This Shen
Please embodiment provide a kind of switchgear state of insulation combined monitoring method, comprising:
Switchgear state of insulation is divided into multiple state of insulation grades, it is specific as follows: to arrange switchgear historical data, lead to
It crosses data processing and obtains history ultrahigh-frequency signal energy value, switchgear state of insulation is divided into four insulation using clustering
State grade: R0 (normal), R1 (alert status), R2 (slight insulation fault), R3 (serious Insulation Problems), and obtain each grade
Ultrahigh-frequency signal central energy value c0、c1、c2、c3；
Switchgear historical data is arranged, history light signal energy value is obtained by data processing, will be opened using clustering
It closes cabinet state of insulation and is divided into four state of insulation grades: R0 (normal), R1 (alert status), R2 (slight insulation fault), R3
(serious Insulation Problems), and obtain the optical signal central energy value d of each grade0、d1、d2、d3。
The probability that ultrahigh-frequency signal is under the jurisdiction of each state of insulation grade is calculated, method particularly includes: utilize extra-high video sensor
Acquire generated ultrahigh-frequency signal when shelf depreciation；The ultrahigh-frequency signal is filtered, removes dryness processing；After calculation processing
Ultrahigh-frequency signal be subordinate to and be belonging respectively to the probability of R0, R1, R2, R3, calculation formula are as follows:
In formula (1), PjIt is under the jurisdiction of the probability of Rj for the state of insulation of this acquisition ultrahigh-frequency signal, treated for x representative
Ultrahigh-frequency signal energy value, cjState of insulation grade is represented as the ultrahigh-frequency signal central energy value of Rj, ciRepresent state of insulation etc.
Grade is the ultrahigh-frequency signal central energy value of Ri.
The probability that optical signal is under the jurisdiction of each state of insulation grade is calculated, method particularly includes: it is opened using fibre optical sensor acquisition
Close cabinet optical signal；
Collected optical signal is coupled to ordinary optic fibre by fiber coupler to transmit, is turned by photoelectric sensor
It is melted into electric signal, treated acquisition light signal energy value；
Light signal energy value after calculation processing is under the jurisdiction of the probability of R0, R1, R2, R3, calculation formula respectively are as follows:
In formula (2), QkIt is under the jurisdiction of the probability of Rk for state of insulation of this acquisition optical signal, y represents that treated light letter
Number energy value, dlState of insulation grade is represented as the optical signal central energy value of Rl, dkState of insulation grade is represented to believe as the light of Rk
Number central energy value.
The combined probability for calculating superfrequency detection and fiber laser arrays is distributed, and specific method is to be obtained according to above-mentioned steps
P0、P1、P2、P3And Q0、Q1、Q2、Q3, summarize to obtain such as the following table 1:
Table 1 is basic probability assignment summary sheet of two kinds of detection methods for switchgear Condition assessment of insulation
Using evidence theory, extra-high video sensor and the collected effective information of fibre optical sensor are merged, calculated
Normaliztion constant K: calculation formula are as follows:
In formula (3), PiIt is under the jurisdiction of the probability of Ri, Q for the state of insulation of this acquisition ultrahigh-frequency signaliLight is acquired for this
The state of insulation of signal is under the jurisdiction of the probability of Ri, and K is normaliztion constant.
Combined probability distribution, calculation formula are calculated again are as follows:
In formula (4), P (Ri) is the combined probability for being under the jurisdiction of Ri, PiState of insulation for this acquisition ultrahigh-frequency signal is subordinate to
Belong to the probability of Ri, QiIt is under the jurisdiction of the probability of Ri for the state of insulation of this acquisition optical signal.
Order of accuarcy and stringency preset threshold ε are detected according to switchgear state of insulation, when being under the jurisdiction of a certain insulation shape
When probability of state is greater than the threshold value, i.e. when max { P (Ri), i=0,1... } > ε, determine the switchgear state of insulation of this time acquisition
It is under the jurisdiction of grade Ri.
The embodiment of the present application discloses a kind of switchgear state of insulation combined monitoring method, comprising: switchgear insulate shape
State is divided into multiple state of insulation grades；Calculate the probability that ultrahigh-frequency signal is under the jurisdiction of each state of insulation grade；Calculate optical signal
It is under the jurisdiction of the probability of each state of insulation grade；The combined probability for calculating superfrequency detection and fiber laser arrays is distributed；Default threshold is set
Value, when the combined probability for being under the jurisdiction of a certain state of insulation grade is greater than the threshold value, the switchgear of judgement this time acquisition
State of insulation is under the jurisdiction of the state of insulation grade.Technical solution provided by the present application is examined using ultrahigh-frequency signal detection with optical signal
Combined monitoring is surveyed, and information fusion is carried out by evidence theory, switchgear historical data is compared, obtains being detected by ultrahigh-frequency signal
The state of insulation assessed jointly with two kinds of detection methods of optical signal detecting, to making assessment of this method to switchgear state of insulation
It is more accurate.
It should be noted that in the present specification, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the circuit structure, article or the equipment that include a series of elements not only include those elements,
It but also including other elements that are not explicitly listed, or further include solid by this circuit structure, article or equipment
Some elements.In the absence of more restrictions, the element for thering is sentence "including a ..." to limit, it is not excluded that including
There is also other identical elements in the circuit structure of the element, article or equipment.
Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here
His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right
The content asked is pointed out.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (6)
1. a kind of switchgear state of insulation combined monitoring method characterized by comprising
Switchgear state of insulation is divided into multiple state of insulation grades；
Calculate the probability that ultrahigh-frequency signal is under the jurisdiction of each state of insulation grade；
Calculate the probability that optical signal is under the jurisdiction of each state of insulation grade；
The combined probability for calculating superfrequency detection and fiber laser arrays is distributed；
Preset threshold is set, when the combined probability for being under the jurisdiction of a certain state of insulation grade is greater than the threshold value, judges this
The switchgear state of insulation of secondary acquisition is under the jurisdiction of the state of insulation grade.
2. switchgear state of insulation combined monitoring method according to claim 1, which is characterized in that described that switchgear is exhausted
Edge state demarcation is that multiple state of insulation grades include:
Switchgear historical data is arranged, history ultrahigh-frequency signal energy value is obtained by data processing, will be opened using clustering
It closes cabinet state of insulation and is divided into four state of insulation grades: R0 (normal), R1 (alert status), R2 (slight insulation fault), R3
(serious Insulation Problems), and obtain the ultrahigh-frequency signal central energy value c of each grade0、c1、c2、c3；
Switchgear historical data is arranged, history light signal energy value is obtained by data processing, using clustering by switchgear
State of insulation is divided into four state of insulation grades: R0 (normal), R1 (alert status), R2 (slight insulation fault), R3 are (serious
Insulation Problems), and obtain the optical signal central energy value d of each grade0、d1、d2、d3。
3. switchgear state of insulation combined monitoring method according to claim 2, which is characterized in that the calculating superfrequency
The probability that signal is under the jurisdiction of each state of insulation grade includes:
Generated ultrahigh-frequency signal when using extra-high video sensor acquisition shelf depreciation；
The ultrahigh-frequency signal is filtered, removes dryness processing；
Ultrahigh-frequency signal after calculation processing is subordinate to the probability for being belonging respectively to R0, R1, R2, R3, calculation formula are as follows:
In formula (1), PjIt is under the jurisdiction of the probability of Rj for state of insulation of this acquisition ultrahigh-frequency signal, superfrequency that x represents that treated
Signal energy value, cjState of insulation grade is represented as the ultrahigh-frequency signal central energy value of Rj, ciState of insulation grade is represented as Ri
Ultrahigh-frequency signal central energy value.
4. switchgear state of insulation combined monitoring method according to claim 2, which is characterized in that the calculating optical signal
The probability for being under the jurisdiction of each state of insulation grade includes:
Switchgear optical signal is acquired using fibre optical sensor；
Collected optical signal is coupled to ordinary optic fibre by fiber coupler to transmit, is converted to by photoelectric sensor
Electric signal, treated acquisition light signal energy value；
Light signal energy value after calculation processing is under the jurisdiction of the probability of R0, R1, R2, R3, calculation formula respectively are as follows:
In formula (2), QkIt is under the jurisdiction of the probability of Rk for state of insulation of this acquisition optical signal, y represents that treated light signal energy
Value, dlState of insulation grade is represented as the optical signal central energy value of Rl, dkState of insulation grade is represented as the optical signal center of Rk
Energy value.
5. switchgear state of insulation combined monitoring method according to claim 1, which is characterized in that the calculating superfrequency
The distribution of the combined probability of detection and optical signal detecting includes: to be adopted extra-high video sensor and fibre optical sensor using evidence theory
The effective information collected is merged, and normaliztion constant, calculation formula are calculated are as follows:
In formula (3), PiIt is under the jurisdiction of the probability of Ri, Q for the state of insulation of this acquisition ultrahigh-frequency signaliOptical signal is acquired for this
State of insulation be under the jurisdiction of the probability of Ri, K is normaliztion constant；
Calculate combined probability distribution, calculation formula are as follows:
In formula (4), P (Ri) is the combined probability for being under the jurisdiction of Ri, PiState of insulation for this acquisition ultrahigh-frequency signal is under the jurisdiction of Ri
Probability, QiIt is under the jurisdiction of the probability of Ri for the state of insulation of this acquisition optical signal.
6. switchgear state of insulation combined monitoring method according to claim 1, which is characterized in that described that default threshold is arranged
Value is according to the order of accuarcy given threshold to switchgear insulation state monitoring.
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| CN201811514997.7A CN109406972B (en) | 2018-12-12 | 2018-12-12 | Combined monitoring method for insulation state of switch cabinet |
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| CN201811514997.7A CN109406972B (en) | 2018-12-12 | 2018-12-12 | Combined monitoring method for insulation state of switch cabinet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812459A (en) * | 2020-06-02 | 2020-10-23 | 深圳供电局有限公司 | Simulation test system applied to switch cabinet partial discharge live detection |
| CN114034338A (en) * | 2021-10-29 | 2022-02-11 | 国网安徽省电力有限公司电力科学研究院 | Multi-source parameter monitoring method for switch cabinet based on improved D-S evidence theory |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702001A (en) * | 2009-12-07 | 2010-05-05 | 华北电力大学 | Method and device for evaluating discharge severity of gas insulating combined electric equipment |
| JP2012173096A (en) * | 2011-02-21 | 2012-09-10 | Tokyo Electric Power Co Inc:The | Maintenance system, maintenance program and maintenance method for power apparatus |
| CN103018603A (en) * | 2012-12-10 | 2013-04-03 | 天津亿利科能源科技发展股份有限公司 | Diagnostic method of abnormal operating state of switch cabinet |
| KR20130044831A (en) * | 2011-10-25 | 2013-05-03 | (주)오성메가파워 | Insulation status monitoring apparatus of power equipments |
| CN105021958A (en) * | 2014-07-27 | 2015-11-04 | 国家电网公司 | Switch cabinet partial discharge data recording and analyzing method based on multi-sensor detection |
| CN105488343A (en) * | 2015-11-27 | 2016-04-13 | 云南电网有限责任公司电力科学研究院 | Fault probability calculation method of secondary electric power equipment |
| CN106680672A (en) * | 2015-11-05 | 2017-05-17 | 云南电网有限责任公司昆明供电局 | Portable switchgear partial discharge patrol detection system |
| CN206369772U (en) * | 2016-11-30 | 2017-08-01 | 西门子公司 | Electric arc optical detection device and switch cubicle |
| CN108846591A (en) * | 2018-07-11 | 2018-11-20 | 国网重庆市电力公司万州供电分公司 | A kind of more operating status intelligent monitor systems of switch cabinet of converting station and appraisal procedure |
| CN108919066A (en) * | 2018-05-22 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detection system and detection method |
-
2018
- 2018-12-12 CN CN201811514997.7A patent/CN109406972B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702001A (en) * | 2009-12-07 | 2010-05-05 | 华北电力大学 | Method and device for evaluating discharge severity of gas insulating combined electric equipment |
| JP2012173096A (en) * | 2011-02-21 | 2012-09-10 | Tokyo Electric Power Co Inc:The | Maintenance system, maintenance program and maintenance method for power apparatus |
| KR20130044831A (en) * | 2011-10-25 | 2013-05-03 | (주)오성메가파워 | Insulation status monitoring apparatus of power equipments |
| CN103018603A (en) * | 2012-12-10 | 2013-04-03 | 天津亿利科能源科技发展股份有限公司 | Diagnostic method of abnormal operating state of switch cabinet |
| CN105021958A (en) * | 2014-07-27 | 2015-11-04 | 国家电网公司 | Switch cabinet partial discharge data recording and analyzing method based on multi-sensor detection |
| CN106680672A (en) * | 2015-11-05 | 2017-05-17 | 云南电网有限责任公司昆明供电局 | Portable switchgear partial discharge patrol detection system |
| CN105488343A (en) * | 2015-11-27 | 2016-04-13 | 云南电网有限责任公司电力科学研究院 | Fault probability calculation method of secondary electric power equipment |
| CN206369772U (en) * | 2016-11-30 | 2017-08-01 | 西门子公司 | Electric arc optical detection device and switch cubicle |
| CN108919066A (en) * | 2018-05-22 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detection system and detection method |
| CN108846591A (en) * | 2018-07-11 | 2018-11-20 | 国网重庆市电力公司万州供电分公司 | A kind of more operating status intelligent monitor systems of switch cabinet of converting station and appraisal procedure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812459A (en) * | 2020-06-02 | 2020-10-23 | 深圳供电局有限公司 | Simulation test system applied to switch cabinet partial discharge live detection |
| CN114034338A (en) * | 2021-10-29 | 2022-02-11 | 国网安徽省电力有限公司电力科学研究院 | Multi-source parameter monitoring method for switch cabinet based on improved D-S evidence theory |
| CN114034338B (en) * | 2021-10-29 | 2023-08-11 | 国网安徽省电力有限公司电力科学研究院 | Switch cabinet multi-source parameter monitoring method based on improved D-S evidence theory |
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