CN107765151A - A kind of local discharge detection device of strong antijamming capability - Google Patents
A kind of local discharge detection device of strong antijamming capability Download PDFInfo
- Publication number
- CN107765151A CN107765151A CN201710979809.7A CN201710979809A CN107765151A CN 107765151 A CN107765151 A CN 107765151A CN 201710979809 A CN201710979809 A CN 201710979809A CN 107765151 A CN107765151 A CN 107765151A
- Authority
- CN
- China
- Prior art keywords
- module
- detection device
- discharge detection
- local discharge
- power
- 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.)
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
Abstract
The invention discloses a kind of local discharge detection device of strong antijamming capability, power supply circuit including local discharge detection device and for local discharge detection device power supply, the power supply circuit includes AC power modular converter and battery powered module, i.e. local discharge detection device has two kinds of powering modes, under any service condition, only with a kind of power supply mode, realize that AC power modular converter, battery powered module are connected with local discharge detection device using change-over switch, its strong antijamming capability.
Description
Technical field
The present invention relates to power system electrical equipment performance detection apparatus field, and in particular to a kind of strong antijamming capability
Local discharge detection device.
Background technology
With the continuous construction of national extra-high voltage alternating current-direct current system, the stability and reliability of power network seem more and more heavier
Will.Thus, power network proposes more stringent requirement, power equipment itself insulation to the security reliability of power equipment itself
Performance should be taken seriously as an important ring for power equipment safety reliability.
Partial discharge test is one of important means for examining power equipment electric property, and shelf depreciation is also to characterize electricity
The important parameter of the apparatus insulated performance of power.Partial Discharge Detection is carried out to power equipment by partial discharge test, can be effective
Ground prevention power equipment causes electric power accident because of itself Insulation Problems, judges to be power equipment for the type of shelf depreciation
Maintenance provides maintenance foundation.Therefore, the exploitation of local discharge detection device receives much concern always, and focal issue concentrates on anti-interference
Etc..
The power unit of existing traditional local discharge detection device directly uses Alternating Current Power Supply, as shown in Figures 2 and 3,
Wherein, u ＇ represent the Alternating Current Power Supply part of detection means side.Local discharge detection device when being monitored to power equipment,
The Alternating Current Power Supply for being surveyed and being tested part due to the Alternating Current Power Supply of instrument is surveyed and has common ground phenomenon, as shown in figure 1, interference signal is from Zf、
Ck、ZmIt is incoming, through measuring instrument mains side earth terminal, tested loop earth terminal, form conducting loop；Or as shown in Fig. 2 interference
Signal can also be from ZmUpper end is incoming through measuring instrument mains side earth terminal, tested loop earth terminal, ZmLower end, formation turn on back
Road；Flow cycle can be provided to interference signal, its antijamming capability is weak.
The content of the invention
The present invention is in order to improve the antijamming capability of local discharge detection device, there is provided a kind of local discharge detection device.
The present invention is achieved through the following technical solutions：
A kind of local discharge detection device of strong antijamming capability, including local discharge detection device and for shelf depreciation examine
The power supply circuit of device power supply is surveyed, the power supply circuit includes AC power modular converter and battery powered module, i.e., local to put
Electric detection means has two kinds of powering modes, real using change-over switch only with a kind of power supply mode under any service condition
Existing AC power modular converter, battery powered module are connected with local discharge detection device.Base of this programme in prior art
Using any power supply mode in battery powered module and AC power rotating module on plinth, when live interference signal is excessive, adopt
With the power supply mode of AC power rotating module, it disturbs the accuracy for by force, influenceing measurement.Now, realized using change-over switch
The switching of power supply mode, using the power supply mode of battery powered module, the power supply for so allowing for local discharge detection device is only
Vertical, interference signal can not invade local discharge detection device by common earth-return, so as to substantially reduce interference signal, realize
The interference free performance lifting of local discharge detection device.
Preferably, the AC power modular converter includes AC power supply module, the power transfer module being sequentially connected
And DC power supplier, the DC power supplier are connected with change-over switch.
Preferably, the change-over switch is single-pole double-throw switch (SPDT), using single-pole double-throw switch (SPDT), it is easy to enter powering mode
Row switching.
Preferably, for the ease of the Charge Management to battery powered module, avoid battery powered module from overcharging, cross and put
Phenomenon, charge management circuit is also associated with the battery powered module.
Preferably, the local discharge detection device includes control unit module and the filter and amplification mould being sequentially connected
Block, acquisition module and data memory module, the filter and amplification module, acquisition module, data memory module are both connected to control
On unit module, display module is also associated with described control unit module.
The present invention compared with prior art, at least has the following advantages and advantages：
The present invention realizes AC power modular converter, the power switching of battery powered module using change-over switch, using electricity
The power supply mode of pond power supply module, it may be such that the power supply of local discharge detection device is independent, interference signal can not be by returning altogether
Road invades local discharge detection device, so as to substantially reduce interference signal, realizes the anti-interference of local discharge detection device
Performance boost.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.
Fig. 1 is structured flowchart of the present invention.
Fig. 2, which is that traditional power supply mode is a kind of, disturbs circuit diagram, wherein ZfFor high voltage filter；CxFor test product equivalent electric
Hold；CkFor coupled capacitor；ZmTo measure impedance；M is measuring instrument.
Fig. 3 is another interference circuit diagram of traditional power supply mode.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
A kind of local discharge detection device of strong antijamming capability as shown in Figure 1, including local discharge detection device and
For the AC power modular converter of local discharge detection device power supply, in addition to battery powered module, the AC power conversion
Module, battery powered module are connected by change-over switch with local discharge detection device.
Local discharge detection device includes control unit module and the filter and amplification module, the acquisition module sum that are sequentially connected
According to memory module, the filter and amplification module, acquisition module, data memory module are both connected in control unit module, described
Display module is also associated with control unit module.Control unit module regulation filter and amplification module parameter, startup and adjustment are adopted
Collect module, monitoring memory module working condition, control display, be whole device control core.Filter and amplification module, collection mould
Block, data memory module and display module, it is responsible for actual waveform collection, processing and analysis.Filter and amplification module can be by specialty
Filter chip is formed plus peripheral circuit, and corresponding chip has the advantages that online tunable band width, stopband attenuation are fast.Collection
Module exceeds typical shelf depreciation frequency several times using high frequency collection A/D chips, highest frequency acquisition, and acquisition capacity meets local
Discharge waveform gathers.Memory cell is served as by storage chip, is stored in and is read the controlled module of data and dominate.AC power is changed
Module or battery powered module are control unit module, filter and amplification module, acquisition module, data storage mould by change-over switch
Block and display module provide working power.
Preferably, the AC power modular converter includes AC power supply module, the power transfer module being sequentially connected
And DC power supplier, the DC power supplier are connected with change-over switch.AC power supply module provides alternating current；Power convert
Unit is the power supply of different brackets direct current required for AC power is converted into other units；DC power supplier is for office
Portion's discharging detection device provides stable dc power supply.
Change-over switch can use single-pole double-throw switch (SPDT).
Charge management circuit is also associated with the battery powered module.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (5)
1. a kind of local discharge detection device of strong antijamming capability, including local discharge detection device and be Partial Discharge Detection
The AC power modular converter of device power supply, it is characterised in that：Also include battery powered module, the AC power modulus of conversion
Block, battery powered module are connected by change-over switch with local discharge detection device.
A kind of 2. local discharge detection device of strong antijamming capability according to claim 1, it is characterised in that：The friendship
Stream power transfer module includes AC power supply module, power transfer module and the DC power supplier being sequentially connected, the direct current
Power module is connected with change-over switch.
A kind of 3. local discharge detection device of strong antijamming capability according to claim 1, it is characterised in that：Described turn
It is single-pole double-throw switch (SPDT) to change switch.
A kind of 4. local discharge detection device of strong antijamming capability according to claim 1, it is characterised in that：The electricity
Charge management circuit is also associated with the power supply module of pond.
A kind of 5. local discharge detection device of strong antijamming capability according to claim 1, it is characterised in that：The office
Portion's discharging detection device includes control unit module and the filter and amplification module, acquisition module and the data storage mould that are sequentially connected
Block, the filter and amplification module, acquisition module, data memory module are both connected in control unit module, described control unit
Display module is also associated with module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710979809.7A CN107765151A (en) | 2017-10-19 | 2017-10-19 | A kind of local discharge detection device of strong antijamming capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710979809.7A CN107765151A (en) | 2017-10-19 | 2017-10-19 | A kind of local discharge detection device of strong antijamming capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107765151A true CN107765151A (en) | 2018-03-06 |
Family
ID=61269041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710979809.7A Withdrawn CN107765151A (en) | 2017-10-19 | 2017-10-19 | A kind of local discharge detection device of strong antijamming capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107765151A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644737A (en) * | 2009-09-10 | 2010-02-10 | 优能电气（天津）有限公司 | Positioning device and positioning method for fault detection of local discharge |
| CN202066935U (en) * | 2011-02-24 | 2011-12-07 | 山东电力集团公司济宁供电公司 | Dual-sensor orientation coupling anti-interference based cable partial discharge detection device |
| CN204287396U (en) * | 2014-12-16 | 2015-04-22 | 国家电网公司 | A kind of cable oscillatory wave partial discharge pick-up unit |
-
2017
- 2017-10-19 CN CN201710979809.7A patent/CN107765151A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644737A (en) * | 2009-09-10 | 2010-02-10 | 优能电气（天津）有限公司 | Positioning device and positioning method for fault detection of local discharge |
| CN202066935U (en) * | 2011-02-24 | 2011-12-07 | 山东电力集团公司济宁供电公司 | Dual-sensor orientation coupling anti-interference based cable partial discharge detection device |
| CN204287396U (en) * | 2014-12-16 | 2015-04-22 | 国家电网公司 | A kind of cable oscillatory wave partial discharge pick-up unit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180306 |