CN109188197A - A kind of assessment system and method for high-tension cable health index - Google Patents
A kind of assessment system and method for high-tension cable health index Download PDFInfo
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- CN109188197A CN109188197A CN201810988543.7A CN201810988543A CN109188197A CN 109188197 A CN109188197 A CN 109188197A CN 201810988543 A CN201810988543 A CN 201810988543A CN 109188197 A CN109188197 A CN 109188197A
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
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Abstract
本申请公开了一种用于高压电缆健康指数的评估系统及方法，所述系统包括：基本参数分析单元，用于对高压电缆的基本参数的试验数据或在线监测数据与规程标准比较；巡视参数分析单元，用于对高压电缆的巡视参数的试验数据或在线监测数据与规程标准比较；故障概率参数分析单元，用于对高压电缆的故障概率参数的试验数据或在线监测数据与规程标准比较；运行历史参数分析单元，用于对高压电缆的运行历史参数的试验数据或在线监测数据与规程标准比较；综合处理单元，用于得出不同高压电缆间的横向对比分析和同一高压电缆的纵向趋势分析的健康指数评估结果。本发明的优点是：实现了健康指数评估在高压电缆运维工作中的应用，具有很强的工程应用价值。
The present application discloses a system and method for evaluating the health index of high-voltage cables. The system includes: a basic parameter analysis unit, which is used to compare the test data or online monitoring data of the basic parameters of the high-voltage cable with regulations and standards; The analysis unit is used to compare the test data or online monitoring data of the inspection parameters of the high-voltage cable with the regulations and standards; the failure probability parameter analysis unit is used to compare the test data or online monitoring data of the failure probability parameters of the high-voltage cables with the regulations and standards; The operation history parameter analysis unit is used to compare the test data or online monitoring data of the operation history parameters of the high-voltage cable with the regulations and standards; the comprehensive processing unit is used to obtain the horizontal comparative analysis between different high-voltage cables and the longitudinal trend of the same high-voltage cable Analyzing the results of the Health Index assessment. The invention has the advantages that the application of the health index evaluation in the operation and maintenance of the high-voltage cable is realized, and the invention has strong engineering application value.
Description
Technical field
The present invention relates to a kind of assessment systems and method for high-tension cable health index.
Background technique
As high-tension cable is using increasingly extensive, for running the age from cable, some high-tension cables are had been running for
In many years, health status management is very necessary and be badly in need of, furthermore in recent years due to construction and installation defect, product quality it is bad and
The reasons such as operation and maintenance are improper, breakdown fault occurs within projected life for Voltage Cable Lines Construction causes the number of power outage also big
Amount increases, and operation stability and power supply reliability to city electric line bring challenge.Cable runs external rings at present
Border constantly deteriorates, and bad cable construction technique, improper maintenance etc. can all generate cable health status very important hidden in addition
Suffer from, high-tension cable failure happened occasionally in recent years.Problem above seriously threatens the safe operation of power grid, but spend huge fund and
The great whole old cables of engineering replacement are clearly very difficult and extremely uneconomic, therefore, are highly desirable to carry out high-voltage electricity
The thoroughly evaluating of cable health status and management study are reduced even so that the reliability service to high-tension cable is effectively tracked
Prevent the serious accident of high-tension cable.
CN103499777A discloses a kind of appraisal procedure and system based on ultralow frequency Partial Discharge Detection, this method
Are as follows: it is newly laid according to cable run or operating condition, determination needs to carry out the power cable of insulation performance assessment；By this section of cable
Route and the electrical equipment at both ends disconnect, and carry out safety measure；It is diagnosed by ultralow frequency cable partial discharge and positioning system, to electricity
Cable road carries out ultralow frequency Partial Discharge Detection；By comparing cable trace and transition joint position laying state, part is put
Electro-detection result carries out network analysis, makes effective assessment to the insulation performance of cable run；The system are as follows: test power supply, filter
Wave device, coupled capacitor and detection impedance, Partial discharge detector.The significant drawback of the prior art is: cannot be effectively to high-voltage electricity
The health index of cable is fully assessed, and also just can not carry out targeted scientific management to the operating status of high-tension cable.
Summary of the invention
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of assessment system for high-tension cable health index,
It is realized simply, can effectively be fully assessed to the health index of high-tension cable.
To achieve the goals above, a kind of the technical solution adopted by the present invention are as follows: commenting for high-tension cable health index
Estimate system characterized by comprising basic parameter analytical unit, for the basic parameter to high-tension cable test data or
Online monitoring data obtains first information data compared with norm standard；Parameter analysis unit is maked an inspection tour, for high-tension cable
The test data or online monitoring data for making an inspection tour parameter obtain the second information data compared with norm standard；Probability of malfunction parameter
Analytical unit, the test data or online monitoring data for the probability of malfunction parameter to high-tension cable compared with norm standard,
Obtain third information data；History run parameter analysis unit, the test data for the history run parameter to high-tension cable
Or online monitoring data obtains the 4th information data compared with norm standard；Integrated treatment unit, for according to the basic ginseng
Number makes an inspection tour each of parameter, probability of malfunction parameter, the test data of history run parameter or online monitoring data and norm standard
Information data carries out data processing, show that the longitudinal direction of across comparison analysis and same high-tension cable between different high-tension cables becomes
The health index assessment result of potential analysis.
Another object of the present invention is to provide a kind of appraisal procedure for high-tension cable health index, feature exists
In, comprising: test data or online monitoring data and regulation mark of the basic parameter analytical unit to the basic parameter of high-tension cable
Standard relatively, obtains first information data；Make an inspection tour parameter analysis unit to the test data of the tours parameter of high-tension cable or online
Monitoring data obtain the second information data compared with norm standard；Failure of the probability of malfunction parameter analysis unit to high-tension cable
The test data or online monitoring data of probability parameter obtain third information data compared with norm standard；History run parameter
Analytical unit compared with norm standard, obtains the to the test data or online monitoring data of the history run parameter of high-tension cable
Four information datas；Integrated treatment unit according to the basic parameter, make an inspection tour parameter, probability of malfunction parameter, history run parameter
Each information data of test data or online monitoring data and norm standard carries out data processing, obtains different high-tension cables
Between across comparison analysis and same high-tension cable longitudinal trend analysis health index assessment result.
The invention has the benefit that
It realizes simply, by the basic parameter of high-tension cable, makes an inspection tour parameter, probability of malfunction parameter and the progress of history run parametric classification
Science integration evaluation and management, to accurately comprehensively obtain the assessment result of health index, assessment score be 60 points hereinafter,
Prompt cable is in unhealthy status, need to be overhauled immediately;61~70 belong to critical health status, prompt cable dimension
The reason of shield personnel concern, analysis general level of the health decline;71~85 belong to qualified health status, by the normal period into
Row preventive trial;85 points the above are good health states, and the period of prerun and maintenance can be appropriately extended.Establish and improve system
One, than more comprehensive, sharable information data platform；Health index assessment is realized in high-tension cable maintenance work
Using with very strong engineering application value.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the assessment system for high-tension cable health index of the invention.
Fig. 2 is the method schematic diagram of the assessment system for high-tension cable health index of the invention.
Specific embodiment
As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer within the acceptable error range, those skilled in the art can within a certain error range solve described in
Technical problem basically reaches the technical effect.Specification subsequent descriptions are to implement the better embodiment of the application, so described
Description is being not intended to limit the scope of the present application for the purpose of the rule for illustrating the application.The protection scope of the application
As defined by the appended claims.
Please refer to Fig. 1, the assessment system for high-tension cable health index of the invention, comprising: basic parameter analysis is single
Member, the test data or online monitoring data for the basic parameter to high-tension cable obtain the first letter compared with norm standard
Cease data；Parameter analysis unit is maked an inspection tour, for the test data or online monitoring data of the tour parameter to high-tension cable and rule
Journey standard comparing obtains the second information data；Probability of malfunction parameter analysis unit, for the probability of malfunction parameter to high-tension cable
Test data or online monitoring data compared with norm standard, obtain third information data；History run parameter analysis unit,
Test data or online monitoring data for the history run parameter to high-tension cable obtains the 4th letter compared with norm standard
Cease data；Integrated treatment unit, for according to the basic parameter, make an inspection tour parameter, probability of malfunction parameter, history run parameter
Each information data of test data or online monitoring data and norm standard carries out data processing, obtains different high-tension cables
Between across comparison analysis and same high-tension cable longitudinal trend analysis health index assessment result.
Preferably, the basic parameter analytical unit is modeled based on fuzzy mathematics theory.
Preferably, the tour parameter analysis unit is modeled based on artificial neural network theories.
Preferably, the probability of malfunction parameter analysis unit is modeled based on rough set theory.
Preferably, the basic parameter analytical unit includes basic parameter sampling module；The tour parameter analysis unit
Including making an inspection tour parameter sampling module；The probability of malfunction parameter analysis unit includes probability of malfunction parameter sampling module；The fortune
Row history parameters analytical unit includes history run parameter sampling module.
Preferably, the basic parameter sampling module makes an inspection tour parameter sampling module, probability of malfunction parameter sampling module and fortune
Row history parameters sampling module is attached by communication module and integrated treatment unit.
Preferably, the integrated treatment unit includes central controller, and the central controller passes through communication module and institute
Basic parameter sampling module is stated, parameter sampling module, probability of malfunction parameter sampling module, history run parameter sampling module are maked an inspection tour
It is attached.
Preferably, the communication module includes sequentially connected switch matrix module, signal input and output device, digital versatile
Table, function generator and spectrum analyzer.
As the embodiment of extension, the high-tension cable health index assessment system includes hardware device level, data processing
With application layer；The hardware device level provides data for data processing and application layer.
As the embodiment of extension, the hardware device level is made a copy of using novel portable tape electro-detection instrument measurement result
Device makes it have the function of electronization reading and the existing controller switching equipment status monitoring instrument result of unloading comprehensively, realizes to
There is the succession of instrument；Sensor-based type, quantity, position and its cost effectiveness analysis determine sensor array optimization cloth
Office's scheme, construction high-tension cable health index, which calculates, uses status data detecting sensor array；Using strong suitable for high-tension cable
The universal adapter of health index information acquisition, realizes the normalization output of signal；Exploitation is based on health index status information capture
The automatic testing software of terminal completes the automatic test and transmission of health index status information.
As the embodiment of extension, the high-tension cable health index assessment data platform uses Object--oriented method,
Based on data base management system (Database ManagementSystem, DBMS), data platform is established and improve, realizes data
Layering, classification management, support inquiry, call and the much informations usage modes such as tabulation, and can be realized existing with power grid
There is the information exchange of database shared.
The present invention also provides a kind of appraisal procedures for high-tension cable health index, comprising: basic parameter analytical unit
To the test data or online monitoring data of the basic parameter of high-tension cable compared with norm standard, first information data are obtained；
Tour parameter analysis unit compared with norm standard, obtains the test data or online monitoring data of the tour parameter of high-tension cable
Take the second information data；Test data or online prison of the probability of malfunction parameter analysis unit to the probability of malfunction parameter of high-tension cable
Measured data obtains third information data compared with norm standard；History run parameter analysis unit goes through the operation of high-tension cable
The test data or online monitoring data of history parameter obtain the 4th information data compared with norm standard；Integrated treatment unit root
According to the basic parameter, make an inspection tour parameter, probability of malfunction parameter, the test data of history run parameter or online monitoring data and rule
Each information data of journey standard carries out data processing, obtains across comparison analysis and same high pressure between different high-tension cables
The health index assessment result of longitudinal trend analysis of cable.
Preferably, the method comprise the steps that carrying out data acquisition, relevant basic ginseng is obtained with high-tension cable state
Number makes an inspection tour parameter, probability of malfunction parameter, the test data or online monitoring data of history run parameter；Assessing score is 60 points
Hereinafter, prompt cable is in unhealthy status, need to be overhauled immediately;61~70 belong to critical health status, prompt
The reason of cable maintenance personnel concern, analysis general level of the health decline;71~85 belong to qualified health status, by normal
Period carries out preventive trial;85 points the above are good health states, and the period of prerun and maintenance can be appropriately extended.
As extension embodiment, the score function of high-tension cable health index is determined:
N--- sub-portion number of packages
The FRi--- subassembly failure rate
The local score of PSCi--- subassembly
SCMAX--- maximum score value
SCmin--- minimum score value.
As extension embodiment, grading system subordinating degree function is determined: each quantity of state is substituted into corresponding individual event state
Amount score function scores, and gained scoring is then substituted into each grading system subordinating degree function.
As extension embodiment, calculate basic parameter, make an inspection tour parameter, probability of malfunction parameter, history run parameter it is each
Index weights COEFFICIENT K, high-tension cable operating status appraisal procedure and Strategies of Maintenance based on four factors are studied, meanwhile, the present invention
Score value specific gravity will be studied, so as to science integration evaluation and the management high-tension cable of classifying, by following score value than reevaluating block diagram
It is assessed, in conjunction with the different weights of four factors, show that score value assessment result, COEFFICIENT K indicate test data or on-line monitoring number
According to the coefficient of correspondence compared with norm standard, which can be used for the analysis of the across comparison between different cables and same cable
Longitudinal trend analysis.
As the embodiment of extension, basic status scoring is obtained by tranining database.
As the embodiment of extension, manufacture, the life index of high-tension cable are acquired, according to life equation, there is a service life
Index n Value requires n >=9 in the world.
As the embodiment of extension, high-tension cable laying, bending radius parameter, China standard GB/T 50168- are acquired
92, " electric device installing engineering, cable run construction and acceptance specification " dictates electricity laying radius: single 20D, multicore
15D.In cable biddings numerous at present, some is required to meet bending radius 10D, but Bloomsbury benefit company is crosslinked 275KV
In 105 DEG C of temperature laying, conductor compresses insulation and is allowed to deformation up to 10%(2.5mm) cable, and if overload temperature is claimed to reach
To 130 DEG C, then general bending radius is not all right, is greater than 30D.This test is published in international bulk power grid report in 1984, is
It is 25D that the 220KV of this our country, which hands over news cable regulation minimum bending radius,.So bending radius is also to influence cable life
A factor, cannot ignore.
As the embodiments of extension, high-tension cable operation, overload parameters are acquired, operating condition when referring to more than 90 DEG C is overloaded,
There are short circuit, short-term and emergency overload, is the influence of temperature；Overvoltage refers to more than highest operating voltage；There is switching overvoltage, has
Lightning surge is the influence of voltage.Overvoltage is overloaded, influence cable life.DC experiment has been found to crosslinked cable
Nocuousness, the mainly influence of space charge, especially medium and high voltage cable.It is handed over since test voltage absolute value height is easier to damage
Connection insulation, space charge, it is easy to during direct-current discharge, or in high pressure idle operation then, cause insulation breakdown.
It as the embodiment of extension, is detected by cable local discharge, dielectric loss, acquires the operating status ginseng of cable
Number, to predict cable life.The high voltage electric equipments such as cable are under the action of high voltage, the electric discharge of built-in electrical insulation generation.
This discharge exists only in the local location of insulation, entire insulation connectivity breakdown or flashover will not be formed immediately, so being known as
Shelf depreciation.Partial discharge quantity is very faint, and the intuition by people is felt, as eye see ear and listen be it is imperceptible, only sensitivity is very
High measurement of partial discharge instrument could it detects that.
As the embodiment of extension, the detection of shelf depreciation passes through energy table using various phenomenons caused by partial discharge as foundation
The physical quantity of the phenomenon is stated to characterize the state of partial discharge.Insulator arrangement is many along with occurring when shelf depreciation occurs for inside
Physics and chemical phenomenon.Some belong to electricity, such as electric pulse, dielectric loss increase, electromagenetic wave radiation；Some belong to non-electrical
, such as ultrasonic wave, light, heat, corresponding detection method can be divided into electrometric method and non-electrometric method two major classes, such as pulse electricity
Stream method, high-frequency detection method, ultra-high-frequency detection method, ultrasonic Detection Method, flash spotting, chemical measure, Infrared Detection Method, transient state
A variety of detection methods such as voltage.Wherein put into practical application has pulse current method, high-frequency detection method, ultra-high-frequency detection method, surpasses
Acoustic wave detection, transient earth voltage etc..
As the embodiment of extension, the hyperfrequency of partial discharge test system real-time detection high-tension cable, is penetrated ultrasonic wave
Frequently, high frequency partial discharge signal；High-tension cable defect can be made according to the characteristic value of partial discharge to judge in advance；More intuitive spectrum is provided
Map analysis function provides important analysis foundation for partial discharge pattern-recognition；Mobile communication and number can be effectively identified when partial discharge detection
Interference of the word TV band to local discharge signal；Have noise jamming pulse suppression function, effectively filters out background noise；Pass through
Positioning device cooperates monitoring software, the position of the shelf depreciation monitored can be locked, to effectively debug.
As the embodiment of extension, electricity that the HF current transformer being mounted in grounding box on earth cable will sense
Stream signal is allocated as three tunnel and gives Partial discharge signal frequency measurement circuit, Partial discharge signal ionization meter circuit and low frequency ground connection electricity respectively
Flow circuitry for signal measurement；Intelligent monitoring terminal is distinguished according to the input signal of Partial discharge signal frequency measurement circuit according to the duration
Burst pulse Partial discharge signal is sent out for high frequency Partial discharge signal and wink；Partial discharge ionization meter circuit measuring signal strength is triggered simultaneously, it will be high
Frequency Partial discharge signal frequency, intensity carry out time weighted, obtain high-tension cable defect rank；Burst pulse Partial discharge signal will be sent out wink on time
Between cycle count；For being more than to preset defect rank and step-by-step counting setting value conduct alarm state information；It will sense
The low frequency signal interface that the low-frequency current signal that should be arrived has transmission cable to be connected to intelligent monitoring terminal obtains after being AD converted
Current data judges the state being directly grounded according to preset value；Gas sensor, Temperature Humidity Sensor and the water level of outside installation
The signal of alarm is converted by intelligent monitoring terminal, judges whether super setting gas concentration limit value, humidity limit value and water
Alarm virtual value in position exports alarm state information if transfiniting value；It is mounted on the optical fiber temperature-measurement sensing at cable intermediate joint position
Signal is passed to single-chip microcontroller by photoelectric conversion and is AD converted by device, gained temperature value and Joint Temperature limit value ratio
Compared with, if transfiniting definite value, output alarm condition；The office for the ultrasonic probe detection transition joint installed outside transition joint armored cassette
Portion's discharge signal passes to single-chip microcontroller at pulse signal by preposition amplification and logarithmic detector circuit conversion, with transition joint office
It puts limit value to compare, alarm condition is exported if transfiniting；All data and alarm state information are sent to by wireless GPRS module
Remote monitoring server；The monitoring computer for being connected to remote monitoring server can refresh these data and state by webpage
Information.
The invention has the advantages that
It realizes simply, by the basic parameter of high-tension cable, makes an inspection tour parameter, probability of malfunction parameter and the progress of history run parametric classification
Science integration evaluation and management, to accurately comprehensively obtain the assessment result of health index, assessment score be 60 points hereinafter,
Prompt cable is in unhealthy status, need to be overhauled immediately;61~70 belong to critical health status, prompt cable dimension
The reason of shield personnel concern, analysis general level of the health decline;71~85 belong to qualified health status, by the normal period into
Row preventive trial;85 points the above are good health states, and the period of prerun and maintenance can be appropriately extended.Establish and improve system
One, than more comprehensive, sharable information data platform；Health index assessment is realized in high-tension cable maintenance work
Using with very strong engineering application value.
Above description shows and describes several preferred embodiments of the present application, but as previously described, it should be understood that the application
Be not limited to forms disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations,
Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through in application contemplated scope described herein
It is modified.And changes and modifications made by those skilled in the art do not depart from spirit and scope, then it all should be in this Shen
It please be in the protection scope of appended claims.
Claims (10)
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| CN201810988543.7A CN109188197B (en) | 2018-08-28 | 2018-08-28 | Evaluation system and method for health index of high-voltage cable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514242A (en) * | 2019-08-17 | 2019-11-29 | 杭州三元电缆有限公司 | A kind of quality detecting system of cable manufacturing process |
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| CN114325254A (en) * | 2021-11-19 | 2022-04-12 | 南京征途信息技术有限公司 | Power transmission and transformation ultrasonic partial discharge sensor and method thereof |
| CN118194143A (en) * | 2024-05-17 | 2024-06-14 | 国网山西省电力公司运城供电公司 | Power distribution network cable aging life prediction method, system, equipment and storage medium |
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