CN108562814A - A kind of resistance device for DC system grounding experiment - Google Patents
A kind of resistance device for DC system grounding experiment Download PDFInfo
- Publication number
- CN108562814A CN108562814A CN201810373685.2A CN201810373685A CN108562814A CN 108562814 A CN108562814 A CN 108562814A CN 201810373685 A CN201810373685 A CN 201810373685A CN 108562814 A CN108562814 A CN 108562814A
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- China
- Prior art keywords
- resistance
- electrically connected
- select switch
- output interface
- system grounding
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention relates to a kind of resistance devices for DC system grounding experiment, including shell, further include the hookup being arranged in the positive operation panel of shell and setting inside housings；The hookup is electrically connected by conducting wire and the operation panel；Wherein, the hookup includes test resistance, GSS Gear Select Switch and output interface；The test resistance is electrically connected with the GSS Gear Select Switch；The GSS Gear Select Switch is electrically connected with the output interface.A kind of resistance device for DC system grounding experiment provided by the invention; it is arranged by test resistance, GSS Gear Select Switch and output interface; the test resistance value of use alerts resistance value close to straight-flow system insulation against ground as defined in specification; false protection or tripping will not be caused to happen when guarantee test; and the installation cost is low, is convenient for carrying, and is suitable for different substation voltage levels direct current system earth and tests.
Description
Technical field
The present invention relates to transformer station direct current system maintenance areas, are tried for DC system grounding more particularly, to one kind
The resistance device tested.
Background technology
Substation's station DC power system grade of rated voltage mainly has two kinds of voltage class of 220V/110V, corresponding
DC bus insulation against ground resistance warning value it is also respectively different.When being safeguarded to station DC power system regular inspection or examination,
It is required to carry out analogue ground experiment to DC bus, to ensure that DC bus insulating monitor and its signal circuit are intact.
Currently, doing analogue ground experiment test for ground resistance used does not have the resistance device of unified standard, it is general using simple electricity
Resistance and test wire short circuit earthing mode are tested using test wire direct grounding way, but DC bus is directly grounded appearance
Easily cause false protection or tripping.
Existing DC system insulation monitoring device tester, although can be used for DC earthing experiment, it is expensive, stupid
Weight, it is not readily portable.
Invention content
The present invention is to solve the prior art to easily cause false protection or tripping and existing to DC system grounding experiment
DC system insulation monitoring device tester it is expensive, not readily portable, provide a kind of for DC system grounding experiment
Resistance device.
To realize the above goal of the invention, the technical solution adopted is that：
A kind of resistance device for DC system grounding experiment, including shell further include being arranged in the positive operating surface of shell
The hookup of plate and setting inside housings；The hookup is electrically connected by conducting wire and the operation panel.
Wherein, the hookup includes test resistance, GSS Gear Select Switch and output interface；The test resistance and institute
State GSS Gear Select Switch electric connection；The GSS Gear Select Switch is electrically connected with the output interface.
Wherein, the GSS Gear Select Switch, output interface are arranged on the operation panel.
Wherein, the operation panel is connect by fixed screw with shell.
Wherein, it is respectively 25K Ω, 15K Ω that the test resistance, which has 2, respectively R1, R2, R1, R2 resistance value,
90%。
Wherein, the GSS Gear Select Switch includes " 220V " shelves and " 110V " shelves；" 220V " shelves and the R1 are electrical
Connection；" 110V " shelves are electrically connected with the R2.
Wherein, the output interface has 2, and one is electrically connected by conducting wire and the one end R1, R2, another passes through gear
Selecting switch is electrically connected with R1, R2 other end.
In said program, the setting of 25K Ω, 15K Ω resistance values, depending on concrete norm specified value.
In said program, operation panel is connect by fixed screw with shell, convenient to device closed test circuit element
Maintenance；Test resistance by suitable for substation's two kinds of voltage class of 220V, 110V straight-flow system two high-power resistance R1,
R2 is formed, and R1, R2 value are 90% warning value；The setting of GSS Gear Select Switch, it is defeated that the personnel that are conveniently operated switch different resistance values
Go out, meets the resistance value needed for different voltages grade straight-flow system busbar grounding experiment.
In said program, the output interface on operation panel uses the tester simultaneous type output interface of relay protection, can facilitate
Ground is respectively connected to ground connection bronze medal using relay protection test line and DC bus carries out test for ground；The shell is plastic construction, both
Component can be disposed, and the safety protection functions such as insulation, mistaken collision preventing can be played.
In said program, the corresponding DC bus insulation against ground resistance alarm regulation of two kinds of voltage class of 220V, 110V
Value is respectively 25K Ω, 15K Ω, therefore chooses the high-power resistance that the smaller resistance value of warning value is provided than specification, as test for ground
With resistance, then the resistance of different resistance values is selected to be connected to experiment contact by output interface using GSS Gear Select Switch, it is applicable
It is tested in current substation's different voltages grade straight-flow system busbar grounding.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of resistance device for DC system grounding experiment provided by the invention, passes through test resistance, GSS Gear Select Switch
It is arranged with output interface, the test resistance value of use alerts resistance value close to straight-flow system insulation against ground as defined in specification, protects
False protection or tripping will not be caused to happen when confirmatory test, and the installation cost is low, is convenient for carrying, be suitable for different voltages
Grade DC system grounding is tested.
Description of the drawings
Fig. 1 is the resistance device structural schematic diagram tested for DC system grounding.
Fig. 2 is the resistance device circuit diagram tested for DC system grounding.
Fig. 3 is the resistance device operation panel schematic diagram tested for DC system grounding.
Wherein：1, shell；2, operation panel；3, GSS Gear Select Switch；4, output interface；5, fixed screw；6, experiment electricity
Resistance.
Specific implementation mode
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of resistance device for DC system grounding experiment, including shell 1 further include setting
In the hookup that shell 12 at positive operation panel and is arranged inside shell 1；The hookup by conducting wire with it is described
Operation panel 2 is electrically connected.
More specifically, the hookup includes test resistance 6, GSS Gear Select Switch 3 and output interface 4；The experiment
Resistance 6 is electrically connected with the GSS Gear Select Switch 3；The GSS Gear Select Switch 3 is electrically connected with the output interface 4.
More specifically, the GSS Gear Select Switch 3, output interface 4 are arranged on the operation panel 2.
More specifically, the operation panel 2 is connect by fixed screw 5 with shell 1.
More specifically, it is respectively 25K Ω, 15K that the test resistance 6, which has 2, respectively R1, R2, R1, R2 resistance value,
The 90% of Ω.
More specifically, the GSS Gear Select Switch 3 includes " 220V " shelves and " 110V " shelves；" 220V " shelves and the R1
It is electrically connected；" 110V " shelves are electrically connected with the R2.
More specifically, the output interface 4 has 2, and one is electrically connected by conducting wire and the one end R1, R2, another is logical
GSS Gear Select Switch 3 is crossed to be electrically connected with R1, R2 other end.
In specific implementation process, the setting of 25K Ω, 15K Ω resistance values, depending on concrete norm specified value.
In specific implementation process, operation panel 2 is connect by fixed screw 5 with shell 1, convenient to device closed test
The maintenance of circuit element；Test resistance 6 is by two big work(suitable for substation's two kinds of voltage class of 220V, 110V straight-flow system
Rate resistance R1, R2 composition, R1, R2 value are 90% warning value；The setting of GSS Gear Select Switch 3, the personnel that are conveniently operated switch different
Resistance value exports, and meets the resistance value needed for different voltages grade straight-flow system busbar grounding experiment.
In specific implementation process, the output interface 4 on operation panel 2 uses the tester simultaneous type output interface of relay protection,
Easily ground connection bronze medal can be respectively connected to using relay protection test line and DC bus carries out test for ground；The shell 1 is modeling
Expect structure, component can be disposed and play the safety protection functions such as insulation, mistaken collision preventing.
In specific implementation process, the corresponding DC bus insulation against ground resistance of two kinds of voltage class of 220V, 110V is accused
Alert value is respectively 25K Ω, 15K Ω, therefore chooses the high-power resistance for provide the smaller resistance value of warning value than specification, as ground connection examination
It tests and uses resistance, then select the resistance of different resistance values to be connected to experiment contact by output interface 4 using GSS Gear Select Switch 3, it can
It is tested suitable for current substation's different voltages grade straight-flow system busbar grounding.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (7)
1. a kind of resistance device for DC system grounding experiment, including shell（1）, it is characterised in that：Further include that setting exists
Shell（1）Positive operation panel（2）With setting in shell（1）Internal hookup；The hookup by conducting wire with
The operation panel（2）It is electrically connected.
2. a kind of resistance device for DC system grounding experiment according to claim 1, it is characterised in that：The examination
Electrical verification road includes test resistance（6）, GSS Gear Select Switch（3）And output interface（4）；The test resistance（6）With the gear
Selecting switch（3）It is electrically connected；The GSS Gear Select Switch（3）With the output interface（4）It is electrically connected.
3. a kind of resistance device for DC system grounding experiment according to claim 2, it is characterised in that：The shelves
Position selecting switch（3）, output interface（4）It is arranged in the operation panel（2）On.
4. a kind of resistance device for DC system grounding experiment according to claim 2, it is characterised in that：The behaviour
Make panel（2）Pass through fixed screw（5）With shell（1）Connection.
5. a kind of resistance device for DC system grounding experiment according to claim 3, it is characterised in that：The examination
Electrical verification resistance has 2, respectively R1, R2, R1, R2 resistance value be respectively 25K Ω, 15K Ω 90%.
6. a kind of resistance device for DC system grounding experiment according to claim 5, it is characterised in that：The shelves
Position selecting switch（3）Including " 220V " shelves and " 110V " shelves；" 220V " shelves are electrically connected with the R1；" 110V " shelves
It is electrically connected with the R2.
7. a kind of resistance device for DC system grounding experiment according to claim 6, it is characterised in that：It is described defeated
Outgoing interface（4）There are 2, one is electrically connected by conducting wire and the one end R1, R2, another passes through GSS Gear Select Switch（3）With R1,
The R2 other ends are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373685.2A CN108562814A (en) | 2018-04-24 | 2018-04-24 | A kind of resistance device for DC system grounding experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373685.2A CN108562814A (en) | 2018-04-24 | 2018-04-24 | A kind of resistance device for DC system grounding experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108562814A true CN108562814A (en) | 2018-09-21 |
Family
ID=63536659
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810373685.2A Pending CN108562814A (en) | 2018-04-24 | 2018-04-24 | A kind of resistance device for DC system grounding experiment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045312A (en) * | 2019-05-24 | 2019-07-23 | 广东电网有限责任公司 | A kind of calibration equipment of insulating monitor |
| CN112362927A (en) * | 2020-12-01 | 2021-02-12 | 中国长江电力股份有限公司 | Portable direct current ground test resistance composite set |
| CN112858951A (en) * | 2021-03-18 | 2021-05-28 | 浙江浙能嘉华发电有限公司 | Direct current system feeder grounding test device |
| CN113589210A (en) * | 2021-08-27 | 2021-11-02 | 广东电网有限责任公司 | Portable grounding test device and method for DC power supply system for plant station |
| CN113777452A (en) * | 2021-09-17 | 2021-12-10 | 广东电网有限责任公司 | Direct current system grounding test device and method for voltage self-adaptive station |
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| CN203178410U (en) * | 2012-12-12 | 2013-09-04 | 新乡市新电电力科技有限公司 | DC insulation detecting device |
| CN103809045A (en) * | 2012-11-11 | 2014-05-21 | 国家电网公司 | Adjustable resistor grounding device |
| CN104215913A (en) * | 2014-08-07 | 2014-12-17 | 国家电网公司 | Analogue grounding tester used for direct-current power |
| CN204044338U (en) * | 2014-08-07 | 2014-12-24 | 国家电网公司 | Portable DC mains analogue ground tester |
| CN105866720A (en) * | 2016-05-23 | 2016-08-17 | 国网浙江省电力公司紧水滩水力发电厂 | Fault simulation device for direct-current system |
| CN205982600U (en) * | 2016-05-23 | 2017-02-22 | 国网浙江省电力公司紧水滩水力发电厂 | Trouble analogue test device |
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2018
- 2018-04-24 CN CN201810373685.2A patent/CN108562814A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809045A (en) * | 2012-11-11 | 2014-05-21 | 国家电网公司 | Adjustable resistor grounding device |
| CN203178410U (en) * | 2012-12-12 | 2013-09-04 | 新乡市新电电力科技有限公司 | DC insulation detecting device |
| CN104215913A (en) * | 2014-08-07 | 2014-12-17 | 国家电网公司 | Analogue grounding tester used for direct-current power |
| CN204044338U (en) * | 2014-08-07 | 2014-12-24 | 国家电网公司 | Portable DC mains analogue ground tester |
| CN105866720A (en) * | 2016-05-23 | 2016-08-17 | 国网浙江省电力公司紧水滩水力发电厂 | Fault simulation device for direct-current system |
| CN205982600U (en) * | 2016-05-23 | 2017-02-22 | 国网浙江省电力公司紧水滩水力发电厂 | Trouble analogue test device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045312A (en) * | 2019-05-24 | 2019-07-23 | 广东电网有限责任公司 | A kind of calibration equipment of insulating monitor |
| CN112362927A (en) * | 2020-12-01 | 2021-02-12 | 中国长江电力股份有限公司 | Portable direct current ground test resistance composite set |
| CN112858951A (en) * | 2021-03-18 | 2021-05-28 | 浙江浙能嘉华发电有限公司 | Direct current system feeder grounding test device |
| CN113589210A (en) * | 2021-08-27 | 2021-11-02 | 广东电网有限责任公司 | Portable grounding test device and method for DC power supply system for plant station |
| CN113777452A (en) * | 2021-09-17 | 2021-12-10 | 广东电网有限责任公司 | Direct current system grounding test device and method for voltage self-adaptive station |
| CN113777452B (en) * | 2021-09-17 | 2024-01-16 | 广东电网有限责任公司 | DC system grounding test device and method for voltage self-adaptive station |
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Application publication date: 20180921 |