CN109188197B - Evaluation system and method for health index of high-voltage cable - Google Patents
Evaluation system and method for health index of high-voltage cable Download PDFInfo
- Publication number
- CN109188197B CN109188197B CN201810988543.7A CN201810988543A CN109188197B CN 109188197 B CN109188197 B CN 109188197B CN 201810988543 A CN201810988543 A CN 201810988543A CN 109188197 B CN109188197 B CN 109188197B
- Authority
- CN
- China
- Prior art keywords
- voltage cable
- parameters
- data
- analysis unit
- parameter analysis
- 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
Classifications
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The application discloses an evaluation system and a method for a high-voltage cable health index, wherein the system comprises: the basic parameter analysis unit is used for comparing test data or online monitoring data of basic parameters of the high-voltage cable with a regulation standard; the inspection parameter analysis unit is used for comparing test data or online monitoring data of inspection parameters of the high-voltage cable with a rule standard; the fault probability parameter analysis unit is used for comparing test data or online monitoring data of the fault probability parameters of the high-voltage cable with a rule standard; the operation history parameter analysis unit is used for comparing the test data or the on-line monitoring data of the operation history parameters of the high-voltage cable with the regulation standard; and the comprehensive processing unit is used for obtaining the health index evaluation results of transverse comparison analysis among different high-voltage cables and longitudinal trend analysis of the same high-voltage cable. The invention has the advantages that: the health index evaluation is applied to the operation and maintenance work of the high-voltage cable, and the engineering application value is very high.
Description
Technical Field
The invention relates to an evaluation system and method for a high-voltage cable health index.
Background
With the increasingly wide application of high-voltage cables, from the cable operation time, some high-voltage cables have been operated for many years, the health state management of the high-voltage cables is very necessary and urgently needed, and in recent years, due to the reasons of construction and installation defects, poor product quality, improper operation and maintenance and the like, the frequency of power failure accidents caused by breakdown faults of high-voltage cable lines in the design life is greatly increased, and the challenges are brought to the operation stability and the power supply reliability of urban power transmission and distribution lines. At present, the external environment of the operation of the cable is continuously worsened, in addition, the health state of the cable can generate non-negligible hidden dangers due to poor cable construction technology, improper maintenance and the like, and the faults of the high-voltage cable frequently occur in recent years. The above problems seriously threaten the safe operation of the power grid, but it is obviously very difficult and uneconomical to replace all the old cables by expensive and expensive engineering, so that it is very necessary to perform comprehensive evaluation and management research on the health status of the high-voltage cables, thereby effectively tracking the reliable operation of the high-voltage cables and reducing or even eliminating the serious accidents of the high-voltage cables.
CN103499777A discloses an evaluation method and system based on ultra-low frequency partial discharge detection, the method is: determining a power cable needing insulation performance evaluation according to the newly laid or running condition of a cable line; disconnecting the cable line section from the electrical equipment at the two ends, and making safety measures; performing ultralow frequency partial discharge detection on a cable line through an ultralow frequency cable partial discharge diagnosis and positioning system; the partial discharge detection result is systematically analyzed by comparing the cable path and the laying condition of the middle joint position, and the insulation performance of the cable line is effectively evaluated; the system is as follows: the device comprises a test power supply, a filter, a coupling capacitor, a detection impedance and a partial discharge detector. The significant disadvantages of the prior art are: the health index of the high-voltage cable cannot be effectively and comprehensively evaluated, and the running state of the high-voltage cable cannot be scientifically managed in a targeted manner.
Disclosure of Invention
The invention aims to overcome the defects and provide an evaluation system for the health index of the high-voltage cable, which is simple to implement and can effectively and comprehensively evaluate the health index of the high-voltage cable.
In order to achieve the purpose, the invention adopts the technical scheme that: an evaluation system for a high voltage cable health index, comprising: the basic parameter analysis unit is used for comparing test data or online monitoring data of basic parameters of the high-voltage cable with a procedure standard to acquire first information data; the inspection parameter analysis unit is used for comparing test data or online monitoring data of inspection parameters of the high-voltage cable with a rule standard to obtain second information data; the fault probability parameter analysis unit is used for comparing test data or online monitoring data of fault probability parameters of the high-voltage cable with a rule standard to obtain third information data; the operation history parameter analysis unit is used for comparing test data or online monitoring data of operation history parameters of the high-voltage cable with a rule standard to acquire fourth information data; and the comprehensive processing unit is used for processing data according to the test data or the on-line monitoring data of the basic parameters, the inspection parameters, the fault probability parameters and the operation historical parameters and each information data of the rule standard to obtain health index evaluation results of transverse comparison analysis among different high-voltage cables and longitudinal trend analysis of the same high-voltage cable.
Another object of the present invention is to provide a method for evaluating a health index of a high voltage cable, comprising: the basic parameter analysis unit compares test data or online monitoring data of basic parameters of the high-voltage cable with a procedure standard to acquire first information data; the patrol parameter analysis unit compares the test data or the online monitoring data of the patrol parameters of the high-voltage cable with a regulation standard to acquire second information data; the fault probability parameter analysis unit compares test data or on-line monitoring data of the fault probability parameters of the high-voltage cable with a rule standard to acquire third information data; the operation history parameter analysis unit compares the test data or the on-line monitoring data of the operation history parameters of the high-voltage cable with the rule standard to acquire fourth information data; and the comprehensive processing unit processes data according to the test data or the online monitoring data of the basic parameters, the inspection parameters, the fault probability parameters and the operation historical parameters and the information data of the rule standard to obtain health index evaluation results of transverse comparison analysis among different high-voltage cables and longitudinal trend analysis of the same high-voltage cable.
The invention has the beneficial effects that:
the method is simple to implement, and the basic parameters, inspection parameters, fault probability parameters and operation history parameters of the high-voltage cable are classified for scientific comprehensive evaluation and management, so that the evaluation conclusion of the health index is accurately and comprehensively obtained, the evaluation score is less than 60 minutes, the cable is prompted to be in an unhealthy state and needs to be immediately overhauled, 61-70 minutes belong to a critical health state, cable maintenance personnel are prompted to pay attention to analyze the reason of the reduction of the health level, 71-85 minutes belong to a qualified health state, preventive tests are carried out according to a normal period, and more than 85 minutes belong to a good health state, so that the pre-test and overhaul period can be properly prolonged. Establishing a sound and uniform, comprehensive and sharable information data platform; the health index evaluation is applied to the operation and maintenance work of the high-voltage cable, and the engineering application value is very high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of an evaluation system for a health index of a high voltage cable according to the present invention.
Fig. 2 is a schematic diagram of a method of the present invention for an evaluation system of a high voltage cable health index.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The following description is of the preferred embodiment for carrying out the present application, but is made for the purpose of illustrating the general principles of the application and is not to be taken in a limiting sense. The protection scope of the present application shall be subject to the definitions of the appended claims.
Referring to fig. 1, the system for evaluating health index of high voltage cable of the present invention comprises: the basic parameter analysis unit is used for comparing test data or online monitoring data of basic parameters of the high-voltage cable with a regulation standard to acquire first information data; the inspection parameter analysis unit is used for comparing test data or online monitoring data of inspection parameters of the high-voltage cable with a rule standard to obtain second information data; the fault probability parameter analysis unit is used for comparing test data or online monitoring data of fault probability parameters of the high-voltage cable with a rule standard to obtain third information data; the operation historical parameter analysis unit is used for comparing test data or online monitoring data of the operation historical parameters of the high-voltage cable with a regulation standard to obtain fourth information data; and the comprehensive processing unit is used for processing data according to the test data or the on-line monitoring data of the basic parameters, the inspection parameters, the fault probability parameters and the operation historical parameters and each information data of the rule standard to obtain health index evaluation results of transverse comparison analysis among different high-voltage cables and longitudinal trend analysis of the same high-voltage cable.
Preferably, the basic parameter analysis unit is modeled based on fuzzy mathematical theory.
Preferably, the patrol parameter analysis unit is modeled based on an artificial neural network theory.
Preferably, the failure probability parameter analysis unit is modeled based on a rough set theory.
Preferably, the basic parameter analysis unit comprises a basic parameter sampling module; the inspection parameter analysis unit comprises an inspection parameter sampling module; the fault probability parameter analysis unit comprises a fault probability parameter sampling module; the operation history parameter analysis unit comprises an operation history parameter sampling module.
Preferably, the basic parameter sampling module, the patrol parameter sampling module, the fault probability parameter sampling module and the operation history parameter sampling module are connected with the comprehensive processing unit through a communication module.
Preferably, the comprehensive processing unit comprises a central controller, and the central controller is connected with the basic parameter sampling module, the patrol parameter sampling module, the fault probability parameter sampling module and the operation history parameter sampling module through a communication module.
Preferably, the communication module comprises a switch matrix module, a signal input/output device, a digital multimeter, a function generator and a spectrum analyzer which are connected in sequence.
As an expanded embodiment, the high-voltage cable health index evaluation system comprises a hardware equipment layer, a data processing and application layer; the hardware device layer provides data for the data processing and application layer.
As an extended embodiment, the hardware equipment layer adopts a novel portable charged detector measurement result copying device, so that the hardware equipment layer has the functions of comprehensively electronically reading and copying the results of the existing distribution equipment state monitoring instrument, and the inheritance of the existing instrument is realized; determining an optimized layout scheme of the sensor array based on the type, the number and the position of the sensors and cost-benefit analysis of the sensors, and constructing a state data sensing sensor array for calculating the health index of the high-voltage cable; the universal adapter suitable for the high-voltage cable health index information acquisition is adopted to realize the standardized output of signals; and developing automatic test software based on the health index state information acquisition terminal to complete automatic test and transmission of the health index state information.
As an extended embodiment, the high-voltage cable health index assessment data platform adopts an object-oriented method, establishes a sound data platform based on a Database management system (DBMS), realizes layering, classification and hierarchical management of data, supports multiple information use modes such as inquiry, call and tabulation, and can realize information interactive sharing with the existing Database of a power grid.
The invention also provides an evaluation method for the health index of the high-voltage cable, which comprises the following steps: the basic parameter analysis unit compares test data or online monitoring data of basic parameters of the high-voltage cable with a procedure standard to acquire first information data; the patrol parameter analysis unit compares the test data or the online monitoring data of the patrol parameters of the high-voltage cable with a regulation standard to acquire second information data; the fault probability parameter analysis unit compares test data or on-line monitoring data of the fault probability parameters of the high-voltage cable with a rule standard to acquire third information data; the operation history parameter analysis unit compares the test data or the on-line monitoring data of the operation history parameters of the high-voltage cable with the rule standard to acquire fourth information data; and the comprehensive processing unit processes data according to the test data or the online monitoring data of the basic parameters, the inspection parameters, the fault probability parameters and the operation historical parameters and the information data of the rule standard to obtain health index evaluation results of transverse comparison analysis among different high-voltage cables and longitudinal trend analysis of the same high-voltage cable.
Preferably, the method of the invention comprises: acquiring data to obtain test data or online monitoring data of basic parameters, inspection parameters, fault probability parameters and operation history parameters related to the state of the high-voltage cable; the evaluation score is below 60 points, which prompts the cable to be in an unhealthy state and needs immediate overhaul, 61-70 points belong to a critical health state, which prompts cable maintenance personnel to pay attention and analyzes the reason of the decline of the health level, 71-85 points belong to a qualified health state, which carries out preventive tests according to a normal period, and more than 85 points belong to a good health state, which can properly prolong the period of pre-test and overhaul.
As an extended embodiment, a scoring function of the high voltage cable health index is determined:
n- -number of sub-parts
FRi- -sub-component failure Rate
PSCi- -local score of a sub-component
SCMAX- -maximum score
SCmin- -minimum score.
As an expanded embodiment, a scoring level membership function is determined: and (4) substituting each state quantity into a corresponding single state quantity scoring function for scoring, and substituting the obtained score into each scoring grade membership function.
As an extended embodiment, index weight coefficients K of basic parameters, inspection parameters, fault probability parameters and operation history parameters are calculated, a four-factor-based high-voltage cable operation state evaluation method and maintenance strategy research are carried out, meanwhile, the value proportion is researched, so that the high-voltage cables can be scientifically and comprehensively evaluated and managed in a classified mode, evaluation is carried out according to a value proportion evaluation block diagram, a value evaluation conclusion is obtained by combining different weights of the four factors, the coefficient K represents a corresponding coefficient for comparing test data or online monitoring data with a rule standard, and the evaluation conclusion can be used for transverse comparison analysis among different cables and longitudinal trend analysis of the same cable.
As an extended embodiment, the basic state score is obtained by training the database.
As an expanded embodiment, the manufacturing and service life indexes of the high-voltage cable are collected, and according to a service life equation, a service life index n value is provided, and n is internationally required to be more than or equal to 9.
As an expanded embodiment, parameters of high-voltage cable laying and bending radius are collected, and the electrical laying radius is regulated by national standard GB50168-92, "electrical device installation engineering, cable line construction and acceptance standard": single core 20D, multiple cores 15D. In many current cable bids, some requirements are to satisfy the bending radius of 10D, but when the Berry corporation lays 275KV crosslinked cable at 105 ℃, the conductor compresses the insulation to deform it by 10% (2.5 mm), and if the overload temperature is to reach 130 ℃, the bending radius is generally not feasible and is larger than 30D. This test was reported in 1984 on the international large power grid, for which the 220KV telecommunications cable of our country specifies a minimum bend radius of 25D. The bending radius is also a factor affecting the cable life and cannot be ignored.
As an expanded embodiment, the operation and overload parameters of the high-voltage cable are collected, wherein overload refers to the operation condition when the temperature exceeds 90 ℃, and the overload has the effects of short circuit, short-term overload and emergency overload and is the influence of temperature; overvoltage means exceeding the maximum operating voltage; there are operating overvoltages and lightning overvoltages, which are the effects of voltage. Overload and overvoltage all affect the service life of the cable. The dc test, which has been shown to be detrimental to crosslinked cables, is mainly the effect of space charge, especially for medium and high voltage cables. The cross-linked insulation and space charge are more easily damaged due to the high absolute value of the test voltage, so that insulation breakdown is easily caused in the direct current discharge process or the subsequent high-voltage no-load process.
As an expanded embodiment, the service life of the cable is predicted by acquiring the operating state parameters of the cable through partial discharge and dielectric loss detection of the cable. The high-voltage electrical equipment such as cables and the like are subjected to discharge in the internal insulation under the action of high voltage. Such discharge is called partial discharge because it exists only in a partial position of the insulation and does not immediately cause a through-dielectric breakdown or flashover of the entire insulation. The partial discharge amount is very weak, and the partial discharge amount can not be detected by human intuition, such as eye observation and ear observation, and can only be detected by a partial discharge measuring instrument with high sensitivity.
As an extended embodiment, the detection of partial discharge is based on various phenomena generated by the partial discharge, and the state of the partial discharge is characterized by a physical quantity capable of expressing the phenomena. When partial discharges occur inside the insulation, a number of physical and chemical phenomena accompany it. Some are electrical, such as electrical impulses, increased dielectric loss, electromagnetic radiation, etc.; some of the methods are non-electrical, such as ultrasonic, optical, thermal, etc., and the corresponding detection methods can be classified into two categories, namely an electrical measurement method and a non-electrical measurement method, such as a pulse current method, a high-frequency detection method, an ultrahigh frequency detection method, an ultrasonic detection method, a photometric method, a chemical detection method, an infrared detection method, a transient ground voltage detection method, etc. The method is put into practical use in a pulse current method, a high-frequency detection method, an ultrahigh-frequency detection method, an ultrasonic detection method, a transient ground voltage method, and the like.
As an expanded embodiment, the partial discharge testing system detects ultrahigh frequency, ultrasonic wave, radio frequency and high frequency partial discharge signals of the high-voltage cable in real time; the defect pre-judgment of the high-voltage cable can be made according to the local discharge characteristic value; a visual spectrogram analysis function is provided, and an important analysis basis is provided for the partial discharge pattern recognition; the interference of mobile communication and digital television frequency bands on local discharge signals can be effectively identified during local discharge detection; the noise interference suppression device has a noise interference pulse suppression function and effectively filters background noise; the monitored position of partial discharge can be locked by positioning equipment and matching with monitoring software, so that faults can be effectively eliminated.
As an expanded embodiment, a high-frequency current transformer installed on a grounding cable in a grounding box divides an induced current signal into three circuits to be respectively sent to an partial discharge signal frequency measuring circuit, an partial discharge signal intensity measuring circuit and a low-frequency grounding current signal measuring circuit; the intelligent monitoring terminal divides the input signal of the partial discharge signal frequency measuring circuit into a high-frequency partial discharge signal and a transient narrow pulse partial discharge signal according to the duration; simultaneously triggering a partial discharge intensity measuring circuit to measure the signal intensity, and carrying out time weighting on the frequency and the intensity of the high-frequency partial discharge signal to obtain the defect grade of the high-voltage cable; counting instantaneous narrow pulse partial discharge signals according to a time period; the pulse count set value exceeding the preset defect grade is used as alarm state information; connecting the sensed low-frequency current signal to a low-frequency signal interface of an intelligent monitoring terminal through a transmission cable, performing AD conversion to obtain current data, and judging the state of direct grounding according to a preset value; signals of an externally mounted gas sensor, a temperature and humidity sensor and a water level alarm are converted through an intelligent monitoring terminal, whether the set gas concentration limit value, the humidity limit value and the water level alarm effective value are exceeded or not is judged, and if the set gas concentration limit value, the humidity limit value and the water level alarm effective value are exceeded, alarm state information is output; the optical fiber temperature measuring sensor arranged at the middle joint part of the cable transmits signals to the singlechip through photoelectric conversion for AD conversion, the obtained temperature value is compared with the temperature limit value of the middle joint, and if the temperature value exceeds the limit value, an alarm state is output; an ultrasonic probe arranged outside the explosion-proof box of the middle joint detects a partial discharge signal of the middle joint, the partial discharge signal is converted into a pulse signal through a preposed amplification and logarithmic detection circuit and is transmitted to a single chip microcomputer, the pulse signal is compared with a partial discharge limit value of the middle joint, and if the partial discharge limit value exceeds the limit, an alarm state is output; all data and alarm state information are transmitted to a remote monitoring server by a wireless GPRS module; a monitoring computer connected to the remote monitoring server may refresh the data and status information through a web page.
The invention has the advantages that:
the method is simple to implement, and the basic parameters, inspection parameters, fault probability parameters and operation history parameters of the high-voltage cable are classified for scientific comprehensive evaluation and management, so that the evaluation conclusion of the health index is accurately and comprehensively obtained, the evaluation score is less than 60 minutes, the cable is prompted to be in an unhealthy state and needs to be immediately overhauled, 61-70 minutes belong to a critical health state, cable maintenance personnel are prompted to pay attention to analyze the reason of the reduction of the health level, 71-85 minutes belong to a qualified health state, preventive tests are carried out according to a normal period, and more than 85 minutes belong to a good health state, so that the pre-test and overhaul period can be properly prolonged. Establishing a sound and uniform, relatively comprehensive and sharable information data platform; the health index evaluation is applied to the operation and maintenance work of the high-voltage cable, and the engineering application value is very high.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (6)
1. An evaluation system for a high voltage cable health index, comprising:
the basic parameter analysis unit is used for comparing test data or online monitoring data of basic parameters of the high-voltage cable with a procedure standard to acquire first information data;
the inspection parameter analysis unit is used for comparing test data or online monitoring data of inspection parameters of the high-voltage cable with a rule standard to obtain second information data;
the fault probability parameter analysis unit is used for comparing test data or online monitoring data of the fault probability parameters of the high-voltage cable with a regulation standard to obtain third information data;
the operation history parameter analysis unit is used for comparing test data or online monitoring data of operation history parameters of the high-voltage cable with a rule standard to acquire fourth information data;
the comprehensive processing unit is used for processing data according to the basic parameters, the inspection parameters, the fault probability parameters, the test data or the online monitoring data of the operation historical parameters and each information data of the regulation standard to obtain the health index evaluation results of transverse comparison analysis among different high-voltage cables and longitudinal trend analysis of the same high-voltage cable; the comprehensive processing unit performs data processing according to an algorithm:
n- - -number of sub-components, FRi- - -failure rate of sub-components, PSCi- - -local score of sub-components, SCMAX- - -maximum score, SCmin- - -minimum score; the basic parameter analysis unit is used for modeling based on a fuzzy mathematical theory; the patrol parameter analysis unit is modeled based on an artificial neural network theory; the failure probability parameter analysis unit is based on a rough set theory for modeling.
2. Evaluation system for the health index of high voltage cables according to claim 1,
the basic parameter analysis unit comprises a basic parameter sampling module;
the inspection parameter analysis unit comprises an inspection parameter sampling module;
the fault probability parameter analysis unit comprises a fault probability parameter sampling module;
the operation history parameter analysis unit comprises an operation history parameter sampling module.
3. The system for evaluating the health index of a high-voltage cable according to claim 2, wherein the basic parameter sampling module, the patrol parameter sampling module, the failure probability parameter sampling module and the operation history parameter sampling module are connected with the comprehensive processing unit through a communication module.
4. The system for assessing the health index of a high voltage cable according to claim 3, wherein the integrated processing unit comprises a central controller, and the central controller is connected with the basic parameter sampling module, the patrol parameter sampling module, the fault probability parameter sampling module and the operation history parameter sampling module through a communication module.
5. The system of claim 4, wherein the communication module comprises a switch matrix module, a signal input/output device, a digital multi-meter, a function generator and a spectrum analyzer connected in sequence.
6. A method for assessing a health index of a high voltage cable, comprising:
the basic parameter analysis unit compares the test data or the online monitoring data of the basic parameters of the high-voltage cable with a regulation standard to acquire first information data;
the inspection parameter analysis unit compares the test data or the on-line monitoring data of the inspection parameters of the high-voltage cable with the rule standard to obtain second information data;
the fault probability parameter analysis unit compares the test data or the online monitoring data of the fault probability parameters of the high-voltage cable with a regulation standard to acquire third information data;
the operation history parameter analysis unit compares the test data or the on-line monitoring data of the operation history parameters of the high-voltage cable with the rule standard to acquire fourth information data;
the comprehensive processing unit processes data according to the test data or the online monitoring data of the basic parameters, the inspection parameters, the fault probability parameters and the operation historical parameters and the information data of the rule standard, and the data processing is carried out according to an algorithm:
and obtaining the health index evaluation results of transverse comparison analysis among different high-voltage cables and longitudinal trend analysis of the same high-voltage cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988543.7A CN109188197B (en) | 2018-08-28 | 2018-08-28 | Evaluation system and method for health index of high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988543.7A CN109188197B (en) | 2018-08-28 | 2018-08-28 | Evaluation system and method for health index of high-voltage cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109188197A CN109188197A (en) | 2019-01-11 |
| CN109188197B true CN109188197B (en) | 2022-10-11 |
Family
ID=64916523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810988543.7A Active CN109188197B (en) | 2018-08-28 | 2018-08-28 | Evaluation system and method for health index of high-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109188197B (en) |
Families Citing this family (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 |
| CN112883608B (en) * | 2021-01-27 | 2023-08-08 | 宁波工程学院 | Truss bridge health index evaluation method and system |
| CN112883618B (en) * | 2021-03-04 | 2022-12-06 | 国网福建省电力有限公司 | 10kV cable intermediate joint explosion-proof box optimization method based on response surface method |
| CN113222531A (en) * | 2021-04-23 | 2021-08-06 | 深圳供电局有限公司 | Data storage and monitoring method, system, computer equipment and storage medium |
| 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 |
| CN118194143B (en) * | 2024-05-17 | 2024-07-19 | 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001076208A1 (en) * | 2000-03-31 | 2001-10-11 | British Telecommunications Public Limited Company | Fault location on a telecommunications network |
| CN101859409A (en) * | 2010-05-25 | 2010-10-13 | 广西电网公司电力科学研究院 | Power transmission and transformation equipment state overhauling system based on risk evaluation |
| CN203704981U (en) * | 2013-12-24 | 2014-07-09 | 浙江图维电力科技有限公司 | Cable operating state intelligent monitoring system |
| CN108375715A (en) * | 2018-03-08 | 2018-08-07 | 中国电力科学研究院有限公司 | A kind of distribution network line fault risk day prediction technique and system |
-
2018
- 2018-08-28 CN CN201810988543.7A patent/CN109188197B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001076208A1 (en) * | 2000-03-31 | 2001-10-11 | British Telecommunications Public Limited Company | Fault location on a telecommunications network |
| CN101859409A (en) * | 2010-05-25 | 2010-10-13 | 广西电网公司电力科学研究院 | Power transmission and transformation equipment state overhauling system based on risk evaluation |
| CN203704981U (en) * | 2013-12-24 | 2014-07-09 | 浙江图维电力科技有限公司 | Cable operating state intelligent monitoring system |
| CN108375715A (en) * | 2018-03-08 | 2018-08-07 | 中国电力科学研究院有限公司 | A kind of distribution network line fault risk day prediction technique and system |
Non-Patent Citations (1)
| Title |
|---|
| "基于四因素的高压电缆运行状态评估方法与检修策略研究";刘军保等;《信息技术与信息化》;20180825;第175-176页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109188197A (en) | 2019-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109188197B (en) | Evaluation system and method for health index of high-voltage cable | |
| KR101553005B1 (en) | A partial discharge monitoring and diagnosis system for power devices | |
| CN108414898A (en) | A kind of condition test method and system of wind farm device live detection | |
| CN204256093U (en) | The On-line Fault monitoring device of cable splice in a kind of 10 ~ 35kV power distribution network | |
| CN109116126B (en) | Method and system for monitoring and evaluating shielding effectiveness of shielding layer of communication cable on line | |
| CN103576059B (en) | A kind of transformer turn-to-turn electric discharge resultant fault diagnostic method and system | |
| CN104407270A (en) | Online fault monitoring device for cable connector in 10-35kV power distribution network and method for evaluating system state | |
| CN108776804A (en) | A kind of transformer specialization repair method based on portable terminal | |
| CN108491990A (en) | A kind of wind farm device state evaluation and maintenance decision support detection method and system | |
| CN106771929A (en) | A kind of GIS device cancels the condition test method of the customary experiment that has a power failure | |
| Wang et al. | Reflectometry-based cable insulation aging diagnosis and prognosis | |
| CN108344917A (en) | The cross interconnected cable on-line fault diagnosis method of 110kV crosslinked polyethylenes based on method of loci | |
| Hassan et al. | Risk assessment of low voltage motors based on PD measurements and insulation diagnostics | |
| Wang et al. | Measurement and analysis of partial discharge using an ultra-high frequency sensor for gas insulated structures | |
| CN109239547A (en) | A kind of method and device measuring high-tension cable operating status | |
| CN108008254A (en) | A kind of Failure Diagnosis of Substation Ground Network method and device | |
| CN116449256A (en) | Transformer state fault diagnosis system and method based on voiceprint sensing | |
| CN116184265A (en) | Lightning arrester leakage current detection method and system based on multi-classification SVM | |
| CN114002533A (en) | Integrated online monitoring and grey evaluation system for high-voltage bushing | |
| CN116400286A (en) | Electronic voltage sensor | |
| CN117420393A (en) | Method, system, equipment and storage medium for identifying partial discharge defect of switch cabinet | |
| CN113267711B (en) | On-line monitoring system and method for insulation state of high-voltage electrical equipment of transformer substation | |
| Schichler et al. | UHF PD detection in GIS substations during on-site testing | |
| Misak et al. | A novel method for detection and classification of covered conductor faults | |
| CN115291013A (en) | Power equipment detection system and method based on artificial intelligence |
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 |