CN207352147U - A kind of single-phase earth fault transient signal generator - Google Patents
A kind of single-phase earth fault transient signal generator Download PDFInfo
- Publication number
- CN207352147U CN207352147U CN201721283726.6U CN201721283726U CN207352147U CN 207352147 U CN207352147 U CN 207352147U CN 201721283726 U CN201721283726 U CN 201721283726U CN 207352147 U CN207352147 U CN 207352147U
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- panel
- unit
- transient signal
- steady
- transient
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Abstract
It the utility model is related to a kind of single-phase earth fault transient signal generator, including housing, panel, power supply unit, transient signal generating unit and steady-state signal compensating unit；The panel, power supply unit, transient signal generating unit and steady-state signal compensating unit are connected fixation inside housings and with housing；The power supply unit, transient signal generating unit and steady-state signal compensating unit are connected with panel；The panel is transferred the files knob, earthing mode selection knob, trigger switch, voltage output jack, electric current output plughole, ground terminal and fuse holder with power outlet, power switch, voltage.Signal caused by the utility model meets voltage and current signal feature when singlephase earth fault occurs, and can effectively test the Small Electric Current Earthing And Routing Device that each principle especially uses Transient method.The utility model global design is portable, easy to operate, reduces labor intensity of operating staff, improves testing efficiency.
Description
Technical field
The utility model belongs to electric system field of test instrument, more particularly to a kind of single-phase earth fault transient signal hair
Raw device.
Background technology
With the fast development of integrated circuit electronic technology, the speed of software and hardware processing data is higher and higher, electric system
Secondary device includes Small Electric Current Earthing And Routing Device, and data acquisition process ability is also higher and higher, by the use of transient signal as sentencing
Main stream approach is increasingly becoming according to breakdown judge is carried out.The technical standard of the equipment such as line selection apparatus, fault detector is all clear and definite
Must possess transient arithmetic.
But conventional test methodologies are only detected using stable state virtual value, transient state effectively cannot be comprehensively tested at present
Recording type equipment.Current common means of testing has two kinds, and, to be tested using relay-protection tester, this method cannot for the first
The transient signal for meeting Fault feature of single phase earthing is produced, so steady-state signal output test starting function can only be applicable in.Second
Kind is to utilize RTDS analogue systems, which can produce transient signal but cost higher, is only suitable for scientific research institution to equipment
Do integrated test.At present in electric system testing field, singlephase earth fault voltage and current transient state can also be carried out without one kind
The instrument or equipment that steady-state signal occurs.
The patent No. 201420167435.0《A kind of one-phase earthing failure in electric distribution network analog testing platform》Proposing one kind can
With forming for the platform circuitry of the route selection functional test to low-current ground fault line selection device, but without reference to as tester
How device forms.
The content of the invention
The utility model is to solve the above-mentioned problems, there is provided a kind of single-phase earth fault transient signal generator, the dress
The signal that can be produced and meet Fault feature of single phase earthing is put, the small current neutral grounding to the especially suitable transient state location design of various principles
Device carries out functional test.
The technical solution of the utility model is as follows：
List occurs for a kind of single-phase earth fault transient signal generator, including housing, panel, power supply unit, transient signal
Member and steady-state signal compensating unit；Panel, power supply unit, transient signal generating unit and steady-state signal compensating unit are in housing
Portion is simultaneously connected fixation with housing；Power supply unit, transient signal generating unit and steady-state signal compensating unit are connected with panel；Face
Plate with power outlet, power switch, voltage transfer the files knob, earthing mode selection knob, trigger switch, voltage output jack,
Electric current output plughole, ground terminal and fuse holder.
Power supply unit one end is connected with power outlet, power switch, and transfer the files one end of knob of the other end and voltage is connected；Temporarily
Transfer the files one end of knob of state signal generating unit one end and voltage is connected, earthing mode selection knob one end of the other end and panel
It is connected；Steady-state signal compensating unit one end is grounded, the earthing mode selection knob of one end connection panel.
Transient signal generating unit includes multichannel " Π " type or T-shape equivalent circuit, and with voltage output jack and electric current
Output plughole is connected, and equivalent circuit includes inductance and capacitance resistance.Steady-state signal compensating unit forms for more inductance coils, its
Inductance value can be to the capacitance overcompensation in multichannel equivalent circuit.When transient signal generating unit is responsible for producing singlephase earth fault
Voltage and current signal, and steady-state signal compensating unit is responsible for carrying out overcompensation to current signal making its stable state amplitude diminish polarity
Become anti-.
The utility model beneficial effect：
The utility model realize generation signal meet singlephase earth fault occur when voltage and current signal feature,
The Small Electric Current Earthing And Routing Device of the especially suitable Transient method of various principles can effectively be tested.The utility model global design
It is portable, easy to operate, labor intensity of operating staff is reduced, improves testing efficiency.
Brief description of the drawings
Attached drawing 1 is the utility model panel composition schematic diagram.
Embodiment
It is the advantages of for clearer explaination the utility model, new to this practicality with reference to the accompanying drawings and detailed description
Type is further described in detail.Instantiation is listed in the following description to fully understand the excellent of the utility model
Point, but the utility model can also be implemented using other different from other modes described here, therefore the utility model
It is not limited to the limitation of following public instantiation.
List occurs for a kind of single-phase earth fault transient signal generator, including housing, panel, power supply unit, transient signal
Member and steady-state signal compensating unit；Panel, power supply unit, transient signal generating unit and steady-state signal compensating unit are in housing
Portion is simultaneously connected fixation with housing；Power supply unit, transient signal generating unit and steady-state signal compensating unit are connected with panel.Such as
Shown in Fig. 1, panel is transferred the files knob 3, earthing mode selection knob 4, trigger switch with power outlet 1, power switch 2, voltage
5th, voltage output jack 6, electric current output plughole 7, ground terminal 8 and fuse holder 8.
Power supply unit one end is connected with power outlet, power switch, and transfer the files one end of knob of the other end and voltage is connected；Temporarily
Transfer the files one end of knob of state signal generating unit one end and voltage is connected, earthing mode selection knob one end of the other end and panel
It is connected；Steady-state signal compensating unit one end is grounded, the earthing mode selection knob of one end connection panel.
Transient signal generating unit includes multichannel " Π " type or T-shape equivalent circuit, and with voltage output jack and electric current
Output plughole is connected, and equivalent circuit includes inductance and capacitance resistance.Steady-state signal compensating unit forms for more inductance coils, its
Inductance value can be to the capacitance overcompensation in multichannel equivalent circuit.When transient signal generating unit is responsible for producing singlephase earth fault
Voltage and current signal, and steady-state signal compensating unit is responsible for carrying out overcompensation to current signal making its stable state amplitude diminish polarity
Become anti-.
Above-described embodiment is only the preferred embodiment of the utility model, is not intended to limit the present invention, for
For those skilled in the art, various modifications and changes may be made to the present invention.It is all in the spiritual and former of the utility model
Within then, any modification for being made, equivalent variations, improvement etc., should be included within the scope of protection of this utility model.
Claims (4)
- A kind of 1. single-phase earth fault transient signal generator, it is characterised in that：Including housing, panel, power supply unit, transient state letter Number generating unit and steady-state signal compensating unit；The panel, power supply unit, transient signal generating unit and steady-state signal compensation Unit is connected fixation inside housings and with housing；The power supply unit, transient signal generating unit and steady-state signal compensation are single Member is connected with panel；The panel with power outlet, power switch, voltage transfer the files knob, earthing mode selection knob, touch Send out switch, voltage output jack, electric current output plughole, ground terminal and fuse holder.
- A kind of 2. single-phase earth fault transient signal generator according to claim 1, it is characterised in that：The power supply list First one end is connected with power outlet, power switch, and transfer the files one end of knob of the other end and voltage is connected；The transient signal occurs Transfer the files one end of knob of unit one end and voltage is connected, and the other end is connected with earthing mode selection knob one end of panel；It is described Steady-state signal compensating unit one end is grounded, the earthing mode selection knob of one end connection panel.
- A kind of 3. single-phase earth fault transient signal generator according to claim 1, it is characterised in that：The transient state letter Number generating unit includes multichannel " Π " type or T-shape equivalent circuit, and is connected with voltage output jack and electric current output plughole, Equivalent circuit includes inductance and capacitance resistance.
- A kind of 4. single-phase earth fault transient signal generator according to claim 1, it is characterised in that：The stable state letter Number compensating unit forms for more inductance coils, its inductance value can be to the capacitance overcompensation in multichannel equivalent circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721283726.6U CN207352147U (en) | 2017-10-01 | 2017-10-01 | A kind of single-phase earth fault transient signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721283726.6U CN207352147U (en) | 2017-10-01 | 2017-10-01 | A kind of single-phase earth fault transient signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207352147U true CN207352147U (en) | 2018-05-11 |
Family
ID=62357304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721283726.6U Expired - Fee Related CN207352147U (en) | 2017-10-01 | 2017-10-01 | A kind of single-phase earth fault transient signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207352147U (en) |
-
2017
- 2017-10-01 CN CN201721283726.6U patent/CN207352147U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 |