CN109631987A - A kind of multi-parameter integrated monitoring and warning system of cable - Google Patents
A kind of multi-parameter integrated monitoring and warning system of cable Download PDFInfo
- Publication number
- CN109631987A CN109631987A CN201811466303.7A CN201811466303A CN109631987A CN 109631987 A CN109631987 A CN 109631987A CN 201811466303 A CN201811466303 A CN 201811466303A CN 109631987 A CN109631987 A CN 109631987A
- Authority
- CN
- China
- Prior art keywords
- cable
- current
- overvoltage
- module
- data processor
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
The present invention provides a kind of multi-parameter integrated monitoring and warning system of cable, including data processor, current acquisition card, overvoltage capture card, current transformer, locating module, communication module, power supply, server；Locating module is used for the position of positioning system, current transformer acquires cable three-phase current signal, data processor calculates cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal according to current signal, and generate warning message, above- mentioned information are uploaded to server by communication module by data processor, server by cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal, warning message, system position positioning failure concrete position.The present invention realizes cable overvoltage and insulation state monitoring early warning by small signals of wide frequency domains such as wide frequency domain current transformer real-time monitoring cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage, accurate to debug.
Description
Technical field
The present invention relates to cable monitoring and early warning technology field more particularly to a kind of multi-parameter integrated monitoring and warning systems of cable
System.
Background technique
With the propulsion of urbanization, the construction of scale of urbanization is accelerated rapidly, and the power cable for being used for transmission electric energy also exists
The features such as continuous extend constitutes supply network, and cable distribution is wide, remote apart constitutes buried cable network in large scale.
Bad environments locating for buried cable are complicated and changeable, if the pernicious gas in the ponding in individual places, ditch in well is to cable
Safe and reliable power supply causes detrimental effect.Existing monitoring system is only high-volume monitored the circulation drawn game of cable, in advance
Alert accuracy is poor, and cable fault position can not be accurately positioned.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of multi-parameter integrated monitoring and warnings of cable
System solves existing monitoring system and is only high-volume monitored to the circulation drawn game of cable, and early warning accuracy is poor, can not be accurate
The problem of navigating to cable fault position.
The present invention provides a kind of multi-parameter integrated monitoring and warning system of cable, including data processor, current acquisition card, mistake
Voltage acquisition card, current transformer, locating module, communication module, power supply, server；The power supply and the data processor,
Current acquisition card, overvoltage capture card, current transformer, locating module, communication module, server connection, the data processing
Device is connect with the current acquisition card, overvoltage capture card, locating module, communication module, server, the current acquisition card,
The overvoltage capture card is connect with the current transformer, and the locating module is used for the position of positioning system, the electric current
Mutual inductor acquires cable three-phase current signal, and the data processor calculates cable circulation, harmonic wave, Jie according to the current signal
Matter loss, high frequency partial discharge amount, overvoltage signal, and warning message is generated, the data processor will by the communication module
The cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal, the warning message, the system position
It is uploaded to the server, the server is believed by the cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage
Number, the position positioning failure concrete position of the warning message, the system.
It further, further include temperature sensor, the temperature sensor is mounted at cable connector, the temperature sensing
Device is connect with the data processor, the temperature value at the temperature sensor acquisition cable connector.
Further, the temperature sensor uses integral type bandage type structure, and the temperature sensor is banded in cable
Joint.
Further, the temperature sensor is radio temperature sensor, and the radio temperature sensor is by the temperature of acquisition
Angle value is wirelessly uploaded to the data processor.
It further, further include data storage, the data storage carry is on the data processor.
Further, the current acquisition card includes power frequency capture card, high frequency capture card, and the current transformer includes work
Frequency current transformer, HF current transformer, the power frequency capture card, the overvoltage capture card and the power current mutual inductance
Device connection, the high frequency capture card are connect with the HF current transformer, and the power current mutual inductor acquires cable three-phase
Power current, the HF current transformer acquire cable three-phase high-frequency current.
Further, the power current mutual inductor, the HF current transformer install cable screens using punching mode
It covers on layer ground line.
Further, the power frequency capture card is rail-to-rail operational amplifier, and the high frequency capture card is high gain operational
Amplifier, the overvoltage capture card are the rail-to-rail operational amplifier of high-precision.
Further, the communication module includes ZigBee module, 433M configuration net module, GPRS module, fiber optic communication
Module.
Further, the data processor is the FPGA of built-in ARM stone, and the locating module is GPS/ Beidou mould
Block, the GPS/ Beidou module and satellite navigation system communicate to connect, and the power supply is solar battery, current transformer induction
Electricity-fetching module, AC power source, lithium battery.
Compared with prior art, the beneficial effects of the present invention are:
The present invention provides a kind of multi-parameter integrated monitoring and warning system of cable, including data processor, current acquisition card, mistake
Voltage acquisition card, current transformer, locating module, communication module, power supply, server；Power supply and data processor, current acquisition
Card, the connection of overvoltage capture card, current transformer, locating module, communication module, server, data processor and current acquisition
Card, the connection of overvoltage capture card, locating module, communication module, server, current acquisition card, overvoltage capture card and electric current are mutual
Sensor connection, locating module are used for the position of positioning system, and current transformer acquires cable three-phase current signal, data processor
Cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal are calculated according to current signal, and generates warning message,
Data processor passes through communication module for cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal, alarm signal
Breath, system position be uploaded to server, server passes through cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage
Signal, warning message, system position positioning failure concrete position.The present invention is not changing power equipment primary connection mode
Under the premise of, pass through wide frequency domain current transformer real-time monitoring cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage etc.
The small signal of wide frequency domain can accurately obtain the insulation degradation evolution process and overvoltage level of cable under operating status, be cable
Overvoltage administer, optimization Insulation Coordination and formulate cable operation, Strategies of Maintenance provide actual measurement foundation, realize cable overvoltage and absolutely
Edge status monitoring early warning, it is accurate to debug.This system is based on hardware realization, handles in real time, and monitoring and prealarming process are without soft
Part intervention.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
A specific embodiment of the invention is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the multi-parameter integrated monitoring and warning system schematic of a kind of cable of the invention.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
A kind of multi-parameter integrated monitoring and warning system of cable, as shown in Figure 1, including data processor, current acquisition card, mistake
Voltage acquisition card, current transformer, locating module, communication module, power supply, server；Power supply and data processor, current acquisition
Card, the connection of overvoltage capture card, current transformer, locating module, communication module, server, data processor and current acquisition
Card, the connection of overvoltage capture card, locating module, communication module, server, current acquisition card, overvoltage capture card and electric current are mutual
Sensor connection, locating module are used for the position of positioning system, and current transformer acquires cable three-phase current signal, data processor
Cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal are calculated according to current signal, and generates warning message,
Data processor passes through communication module for cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal, alarm signal
Breath, system position be uploaded to server, server passes through cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage
Signal, warning message, system position positioning failure concrete position.Such as: data processor acquires overvoltage shape on cable in real time
State stores over-voltage waveform if having overvoltage event generation, and to upper alarm；For the dielectric level of cable, in electric power electricity
High frequency partial discharge amount and leakage current are monitored on cable metallic shield grounding downlead, and by comparing multiple power cable metal sheaths
And leakage current calculates opposite dielectric loss on down conductor, determines failure cable section, and pass through further server analysis,
Positioning failure concrete position.
In one embodiment, it is preferred that further include temperature sensor, temperature sensor is mounted at cable connector, temperature
Sensor is connect with data processor, and temperature sensor acquires the temperature value at cable connector.Preferably, temperature sensor uses
Integral type bandage type structure, temperature sensor is banded at cable connector when installation.Preferably, temperature sensor is wireless temperature
The temperature value of acquisition is wirelessly uploaded to data processor by 433MHZ wireless module by sensor, radio temperature sensor, number
Data processing is carried out according to processor, processed data are transmitted to server and are shown, radio temperature sensor supports week
Temperature value is sent on phase, when temperature value mutation, by wireless online monitoring transmission come early warning cable fault.
Because need to acquire leakage current of A, B, C three-phase in the band limits from power frequency to high frequency, partial discharge, opposite dielectric loss,
Harmonic wave, and certain high fdrequency components are sudden pulse in leakage current, need seamless acquisition just to can guarantee and very collect.It is excellent
Choosing, data processor is the FPGA of built-in ARM stone.System uses rate using 100M for high-frequency signal, and a/d resolution is
The acquisition of 12bit, A, B, C three-phase synchronous, generates 3.6G bit data each second, the FPGA of built-in ARM stone can extended channel,
It realizes seamless high-speed data acquisition and processing, synchronizes and concurrently acquire, handle 3 high frequency acquisition channels, 6 power frequency acquisition channel numbers
According to, and can guarantee the synchronous acquisition between multi-chip.It preferably, further include data storage, data storage carry is in number
According on processor.In the present embodiment, data storage DDR2SDRAM carries out double edge transmission using special read-write bus,
It can accomplish ns grades of data storages and read, complete data interaction.The FPGA of built-in ARM stone can also be by FSMC bus extension more
Multi-memory.
In one embodiment, high-tension cable be single structure, the single-point grounding under normal circumstances of single-core cable metal sheath,
Circulation very little on metal sheath, predominantly capacity current, if sheath two-terminal-grounding, circulation dramatically increase, up to main when serious
90% or more of electric current.Therefore circulation drawn game high-volume change be cable bad the form of expression.Cable is usual before insulation breakdown
The development process of shelf depreciation is had, partial discharge initial stage discharge capacity is smaller, generally will not cause to seriously affect to equipment, but in high electricity
It can develop under pressure long term as penetrability electric discharge.Partial discharge detection may determine that the local discharging level of cable in operation, quilt
It is considered the most effective of detection cable insulation defect development.This system generates powerful induced electricity when may determine that cable operation,
Cause to ripple tube discharge in cable, bellows breakdown, or generates heat, insulation ag(e)ing, cable breakdown.Realize cable operation just
Often, failure rate is reduced, is given warning in advance.Because dielectric loss can reflect cable insulation level, pass through the dielectric loss of quantitative measurment high-tension cable
And dielectric loss change rate, it can effectively assess the insulation ag(e)ing state of high-tension cable.Specifically, same by A, B, C three-phase ground electric current
Step acquisition, compares line voltage or common reference point, and all collection points monitor the opposite of entire cable difference by satellite synchronization
Dielectric loss assesses the dielectric level of high-tension cable.Because harmonic pollution will lead to the increase of cable bad risk, harmonic pollution can make electricity
The dielectric loss of cable, transmission losses increase, and leakage current rises, and temperature rise increase and shelf depreciation increase, and cause single-phase earthing event
A possibility that barrier, increases.Therefore Fourier transformation is added by high speed, high resolution AD multipoint acquisition, detects 2-50 subharmonic.Cross electricity
Pressure will lead to cable insulation damage, and high voltage single-core cable can generate induced voltage, especially thing in normal operation and accident
Therefore in situation, greatly harm can be generated to cable, it is therefore desirable to real-time monitoring be carried out to the overvoltage level of cable, with assessment
Cable health status, overvoltage or internal overvoltage cause insulating layer breakdown, and especially internal system overvoltage will cause more
Root cable is breakdown simultaneously, and system adds high speed acquisition, electric power differential accretion grading mode, reduction by wide frequency domain current transformer
Shape information when overvoltage, extent of the destruction of the analysis overvoltage to cable.Preferably, current acquisition card includes power frequency acquisition
Card, high frequency capture card.Preferably, current transformer includes power current mutual inductor, HF current transformer, power frequency capture card,
Overvoltage capture card is connect with power current mutual inductor, and high frequency capture card is connect with HF current transformer, power current mutual inductance
Device acquires cable three-phase main-frequency electric current, and HF current transformer acquires cable three-phase high-frequency current.Preferably, power current mutual inductance
Device, HF current transformer are installed on cable shielding layer earthing line using punching mode.Power current mutual inductor can synchronize coupling
From the current signal of 50HZ~30M, to the data acquisition module of rear class；HF current transformer can synchronize coupling from 3M~30M
In range, transfer impedance is not less than 5mV/mA, and the corresponding frequency of maximum output is located in 3M~30M, and minimum can survey partial discharge amount
When 5pC, dynamic range of signals 40dB, linearity error is not more than 15%.Preferably, power frequency capture card is rail-to-rail operation amplifier
Collected data, are transmitted to the ADC interface of data processor, measurable range 100mA~50A by device, and high frequency capture card is
High gain operational amplifier, minimum can acquire 5PC partial discharge amount, and gain can reach 40dB, and linearity error is excessively electric no more than 15%
Pressing capture card is that the rail-to-rail operational amplifier of high-precision transmits result by the collected data of current transformer by processing
It is acquired to the high-precision adc interface of data processor.Under the premise of not changing power equipment primary connection mode, pass through
The ground line of cable acquires circulation, harmonic wave, high frequency partial discharge amount and the dielectric loss value of cable using punching structure in real time；Accurate measurement
Various overvoltage including power-frequency overvoltage, switching overvoltage and lightning surge, synchronous acquisition switching overvoltage with
And partial discharge amount when lightning surge, realize cable overvoltage and insulation state monitoring early warning.
In one embodiment, it is preferred that locating module is GPS/ Beidou module, GPS/ Beidou module and satellite navigation system
Communication connection.GPS/ Beidou module positions each monitoring location, while the synchronization signal as each collection point uses.It is preferred that
, communication module includes ZigBee module, 433M configuration net module, GPRS module, fiber optic telecommunications module.Pass through between each system
Communication module networking.Preferably, power supply is solar battery, current transformer induction electricity-fetching module, AC power source, lithium battery.
The present invention provides a kind of multi-parameter integrated monitoring and warning system of cable, including data processor, current acquisition card, mistake
Voltage acquisition card, current transformer, locating module, communication module, power supply, server；Power supply and data processor, current acquisition
Card, the connection of overvoltage capture card, current transformer, locating module, communication module, server, data processor and current acquisition
Card, the connection of overvoltage capture card, locating module, communication module, server, current acquisition card, overvoltage capture card and electric current are mutual
Sensor connection, locating module are used for the position of positioning system, and current transformer acquires cable three-phase current signal, data processor
Cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal are calculated according to current signal, and generates warning message,
Data processor passes through communication module for cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal, alarm signal
Breath, system position be uploaded to server, server passes through cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage
Signal, warning message, system position positioning failure concrete position.The present invention is not changing power equipment primary connection mode
Under the premise of, pass through wide frequency domain current transformer real-time monitoring cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage etc.
The small signal of wide frequency domain can accurately obtain the insulation degradation evolution process and overvoltage level of cable under operating status, be cable
Overvoltage administer, optimization Insulation Coordination and formulate cable operation, Strategies of Maintenance provide actual measurement foundation, realize cable overvoltage and absolutely
Edge status monitoring early warning, it is accurate to debug.This system is based on hardware realization, handles in real time, and monitoring and prealarming process are without soft
Part intervention.
More than, only presently preferred embodiments of the present invention is not intended to limit the present invention in any form；All current rows
The those of ordinary skill of industry can be shown in by specification attached drawing and above and swimmingly implement the present invention；But all to be familiar with sheet special
The technical staff of industry without departing from the scope of the present invention, is made a little using disclosed above technology contents
The equivalent variations of variation, modification and evolution is equivalent embodiment of the invention；Meanwhile all substantial technologicals according to the present invention
The variation, modification and evolution etc. of any equivalent variations to the above embodiments, still fall within technical solution of the present invention
Within protection scope.
Claims (10)
1. a kind of multi-parameter integrated monitoring and warning system of cable, it is characterised in that: including data processor, current acquisition card, mistake
Voltage acquisition card, current transformer, locating module, communication module, power supply, server；The power supply and the data processor,
Current acquisition card, overvoltage capture card, current transformer, locating module, communication module, server connection, the data processing
Device is connect with the current acquisition card, overvoltage capture card, locating module, communication module, server, the current acquisition card,
The overvoltage capture card is connect with the current transformer, and the locating module is used for the position of positioning system, the electric current
Mutual inductor acquires cable three-phase current signal, and the data processor calculates cable circulation, harmonic wave, Jie according to the current signal
Matter loss, high frequency partial discharge amount, overvoltage signal, and warning message is generated, the data processor will by the communication module
The cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage signal, the warning message, the system position
It is uploaded to the server, the server is believed by the cable circulation, harmonic wave, dielectric loss, high frequency partial discharge amount, overvoltage
Number, the position positioning failure concrete position of the warning message, the system.
2. a kind of multi-parameter integrated monitoring and warning system of cable as described in claim 1, it is characterised in that: further include that temperature passes
Sensor, the temperature sensor are mounted at cable connector, and the temperature sensor is connect with the data processor, the temperature
Spend the temperature value at sensor acquisition cable connector.
3. a kind of multi-parameter integrated monitoring and warning system of cable as claimed in claim 2, it is characterised in that: the temperature sensing
Device uses integral type bandage type structure, and the temperature sensor is banded at cable connector.
4. a kind of multi-parameter integrated monitoring and warning system of cable as claimed in claim 3, it is characterised in that: the temperature sensing
Device is radio temperature sensor, and the temperature value of acquisition is wirelessly uploaded to the data processor by the radio temperature sensor.
5. a kind of multi-parameter integrated monitoring and warning system of cable as described in claim 1, it is characterised in that: further include that data are deposited
Reservoir, the data storage carry is on the data processor.
6. a kind of multi-parameter integrated monitoring and warning system of cable as described in claim 1, it is characterised in that: the current acquisition
Card includes power frequency capture card, high frequency capture card, and the current transformer includes power current mutual inductor, HF current transformer,
The power frequency capture card, the overvoltage capture card are connect with the power current mutual inductor, the high frequency capture card with it is described
HF current transformer connection, the power current mutual inductor acquire cable three-phase main-frequency electric current, the HF current transformer
Acquire cable three-phase high-frequency current.
7. a kind of multi-parameter integrated monitoring and warning system of cable as claimed in claim 6, it is characterised in that: the power current
Mutual inductor, the HF current transformer are installed on cable shielding layer earthing line using punching mode.
8. a kind of multi-parameter integrated monitoring and warning system of cable as claimed in claim 6, it is characterised in that: the power frequency acquisition
Card is rail-to-rail operational amplifier, and the high frequency capture card is high gain operational amplifier, and the overvoltage capture card is high-precision
Spend rail-to-rail operational amplifier.
9. the multi-parameter integrated monitoring and warning system of a kind of cable as described in claim 1 to 8 any one, it is characterised in that:
The communication module includes ZigBee module, 433M configuration net module, GPRS module, fiber optic telecommunications module.
10. the multi-parameter integrated monitoring and warning system of a kind of cable as described in claim 1 to 8 any one, it is characterised in that:
The data processor is the FPGA of built-in ARM stone, and the locating module is GPS/ Beidou module, the GPS/ Beidou module
With satellite navigation system communicate to connect, the power supply be solar battery, current transformer incude electricity-fetching module, AC power source,
Lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811466303.7A CN109631987A (en) | 2018-12-03 | 2018-12-03 | A kind of multi-parameter integrated monitoring and warning system of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811466303.7A CN109631987A (en) | 2018-12-03 | 2018-12-03 | A kind of multi-parameter integrated monitoring and warning system of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109631987A true CN109631987A (en) | 2019-04-16 |
Family
ID=66070510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811466303.7A Pending CN109631987A (en) | 2018-12-03 | 2018-12-03 | A kind of multi-parameter integrated monitoring and warning system of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109631987A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157859A (en) * | 2020-01-14 | 2020-05-15 | 杭州巨骐信息科技股份有限公司 | Small current electricity taking composite sensor |
| CN111679162A (en) * | 2020-06-02 | 2020-09-18 | 国网浙江义乌市供电有限公司 | Insulation monitoring method and device for transformer substation cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017560A (en) * | 2016-06-14 | 2016-10-12 | 上海君世电气科技有限公司 | Cable well state comprehensive monitoring and early warning system |
| CN206132834U (en) * | 2016-10-13 | 2017-04-26 | 国网吉林省电力有限公司白山供电公司 | Cable circulation on -line monitoring device |
| CN206179189U (en) * | 2016-10-25 | 2017-05-17 | 大连中汇泰昌电力环保工程有限公司 | Wireless monitoring and early warning system of cable tunnel intelligence |
| CN107991575A (en) * | 2017-11-29 | 2018-05-04 | 杭州柯林电气股份有限公司 | Cable many reference amounts signal acquisition process prior-warning device |
| CN108072816A (en) * | 2017-12-25 | 2018-05-25 | 安徽博达通信工程监理有限责任公司 | A kind of Cable fault examination communication system |
-
2018
- 2018-12-03 CN CN201811466303.7A patent/CN109631987A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017560A (en) * | 2016-06-14 | 2016-10-12 | 上海君世电气科技有限公司 | Cable well state comprehensive monitoring and early warning system |
| CN206132834U (en) * | 2016-10-13 | 2017-04-26 | 国网吉林省电力有限公司白山供电公司 | Cable circulation on -line monitoring device |
| CN206179189U (en) * | 2016-10-25 | 2017-05-17 | 大连中汇泰昌电力环保工程有限公司 | Wireless monitoring and early warning system of cable tunnel intelligence |
| CN107991575A (en) * | 2017-11-29 | 2018-05-04 | 杭州柯林电气股份有限公司 | Cable many reference amounts signal acquisition process prior-warning device |
| CN108072816A (en) * | 2017-12-25 | 2018-05-25 | 安徽博达通信工程监理有限责任公司 | A kind of Cable fault examination communication system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157859A (en) * | 2020-01-14 | 2020-05-15 | 杭州巨骐信息科技股份有限公司 | Small current electricity taking composite sensor |
| CN111679162A (en) * | 2020-06-02 | 2020-09-18 | 国网浙江义乌市供电有限公司 | Insulation monitoring method and device for transformer substation cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103293443B (en) | A kind of distribution network overhead line Earth design method | |
| CN109631986A (en) | A kind of cable and its monitoring of working condition early warning system | |
| CN102928704B (en) | Intelligent diagnosis method for corrosion failure point of transformer substation grounding grid | |
| CN102680799B (en) | Transformer substation capacitor on-line monitoring method and device based on wireless mode | |
| CN105938173B (en) | A kind of supertension line failure precision ranging method | |
| CN102221644B (en) | System and method for online monitoring grounding networks of power stations and substations | |
| CN203759497U (en) | Intelligent electrical equipment condition monitoring and fault diagnosis system | |
| CN104569608A (en) | Method for measuring impact grounding impedance on site based on large impact current | |
| CN202903922U (en) | Corrosion fault point diagnosis system for substation grounding grids | |
| CN102497030A (en) | Line-loss actual-measurement and positioning method based on high-voltage electric energy meter and system thereof | |
| CN110988600B (en) | Power distribution network line break fault section positioning method | |
| CN103344821A (en) | Transient overvoltage on-line monitoring system based on CVT and provided with built-in low-voltage capacitor | |
| CN107290592A (en) | Grounded screen electric resistance on-line monitoring system | |
| CN105371742A (en) | Bushing tap pulse signal injection method-based transformer winding deformation detection device and method | |
| CN104375005A (en) | Networked wind power plant harmonic wave monitoring system and method | |
| CN204214974U (en) | High voltage power cable terminal on-Line Monitor Device | |
| CN112083263A (en) | Multi-source data fusion high-voltage cable line fault online positioning device and method based on traveling wave principle | |
| CN103616616A (en) | Fault detection method for large-scale grounding grid | |
| CN112904147B (en) | Power transmission line fault and pre-discharge monitoring device and signal processing method | |
| CN110456176A (en) | A kind of calculation method of high altitude localities ultra-high-tension power transmission line radio interference level | |
| CN109631987A (en) | A kind of multi-parameter integrated monitoring and warning system of cable | |
| CN203825142U (en) | Power supply line fault locating instrument | |
| CN106771843A (en) | A kind of fault travelling wave ranging method of single-core power cables | |
| CN105445633A (en) | High-voltage cable protective layer loop current multi-state monitoring device | |
| CN205139294U (en) | Ground net corrodes situation testing arrangement based on wireless sensor network |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190911 Address after: Hangzhou City, Zhejiang province 310000 City Zhaohui District eight Applicant after: STATE GRID ZHEJIANG ELECTRIC POWER COMPANY LIMITED ELECTRIC POWER Research Institute Applicant after: HANGZHOU KELIN ELECTRIC Co.,Ltd. Applicant after: ZHEJIANG SHANGQINGYUAN ELECTRIC POWER TECHNOLOGY CO.,LTD. Address before: Hangzhou City, Zhejiang province 310000 City Zhaohui District eight Applicant before: STATE GRID ZHEJIANG ELECTRIC POWER COMPANY LIMITED ELECTRIC POWER Research Institute Applicant before: HANGZHOU KELIN ELECTRIC Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
|
| RJ01 | Rejection of invention patent application after publication |