CN207396697U - The bringing device of of ac is scurried into transforming plant DC power-supply system - Google Patents
The bringing device of of ac is scurried into transforming plant DC power-supply system Download PDFInfo
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- CN207396697U CN207396697U CN201721378672.1U CN201721378672U CN207396697U CN 207396697 U CN207396697 U CN 207396697U CN 201721378672 U CN201721378672 U CN 201721378672U CN 207396697 U CN207396697 U CN 207396697U
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- iron core
- epoxy resins
- power
- shaped
- resins insulation
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Abstract
The utility model discloses the bringing devices that of ac is scurried into a kind of transforming plant DC power-supply system, solve the problems, such as that existing be easy to cause destroys straight-flow system circuit and relevant device when scurrying into of ac in detecting and evaluating DC power system.Including dc bus（13）, 220 volts of AC powers（14）And single-phase voltage regulator（15）, in dc bus（13）On be connected with output type current transformer（16）, 220 volts of AC powers（14）With single-phase voltage regulator（15）It is electrically connected, output type current transformer（16）Rogowski coil（17）One end lead-out wire with the earth be connected, output type voltage transformer（16）Rogowski coil（17）Other end lead-out wire（3）With single-phase voltage regulator（15）Output terminal connection.It is a kind of live simple operations method of detection and the sensitivity of evaluation DC power supply insulating monitor.
Description
Technical field
The present invention relates to a kind of bringing devices and method that of ac is scurried into the DC power system of substation, are used for
O＆M and the evaluation of the monitoring device of direct current are scurried into exchange in DC power system, belong to the operation of transforming plant DC power-supply system
With maintenance technology field.
Background technology
In substation（Or power plant）In, when AC power dead electricity, DC power system is substation（Or power plant）
The important equipments such as protective loop, control loop, emergency lighting circuit and communication equipment working power is provided, to ensureing substation
Various kinds of equipment safe and stable operation plays an important role.Since transforming plant DC power-supply system power supply unit is various, feeder line
Complexity, cable is longer, and closer to the distance with AC power, in the case where cable insulation grade declines or cable is intake, easily
There is a situation where AC signal scurries into straight-flow system, protective device can be caused to malfunction, the event of straight-flow system periodic earth
Barrier, serious threat have arrived the safe and stable operation of power grid.Insulating monitoring dress should be configured in transforming plant DC power-supply system
Put, and should possess exchange scurry into the alarm of straight-flow system and survey cite sb. for meritorious service can, when there is AC signal to scurry into straight-flow system, it should
There is alarm signal to send and accordingly measured and recorded.O＆M maintenance department should carry out the function periodic detection and comment
Valency, to ensure the normal operation of substation.The detection method of the prior art is to disconnect substation（Or power plant）DC power supply
Circuit, and the method by applying of ac in the circuit, to verify that the reliability of straight-flow system alarm function is scurried into exchange,
The way generally taken is that pressure regulator is directly accessed DC power supply circuit to provide AC compounent, this way to straight-flow system
It is time-consuming and laborious, and there are larger destruction straight-flow system circuit and the security risks of relevant device.
The content of the invention
The present invention provides the bringing device and applying method that of ac is scurried into a kind of transforming plant DC power-supply system, solutions
Existing be easy to cause when scurrying into of ac in detecting and evaluating DC power system of having determined destroys straight-flow system circuit and phase
The technical issues of closing equipment.
The present invention is to solve more than technical problem by the following technical programs：
The bringing device of of ac is scurried into a kind of transforming plant DC power-supply system, including dc bus, 220V alternating currents
Source and single-phase voltage regulator, are connected with output type current transformer on dc bus, and 220V AC powers and single-phase voltage regulator are defeated
Enter end to link together, one end lead-out wire ground connection of the Rogowski coil of output type current transformer, output type current transformer
The other end lead-out wire of Rogowski coil and the output terminal of single-phase voltage regulator link together.
Rogowski coil be wound clockwise on upper half C-shaped iron core and lower half C-shaped iron core, upper half C-shaped iron core under
The left end junction of half C-shaped iron core is provided with elastic lock, is provided with and blocks on the upper half C-shaped iron core above elastic lock
Hoop is worn on two clamping tongues of front band and is connected to upper pin, lower card is provided on the lower half C-shaped iron core below elastic lock
Hoop is worn on two clamping tongues of lower catch hoop and is connected to lower bearing pin, the upper pendulum bar of V-shaped rest is hinged on upper pin, in lower bearing pin
On be hinged with the draft link of V-shaped rest, screw hole is provided in the bottom of V-shaped rest, V-shaped rest is set by V-shaped rest bottom
The right end of screw hole and hollow epoxy resins insulation bar be screwed together, activity, which is plugged with, in hollow epoxy resins insulation bar wears
Heart epoxy resins insulation bar is provided in the right end for the punching epoxy resins insulation bar for being pierced by hollow epoxy resins insulation bar right end
Rubber pad is provided with tension spring on the inside of the bottom of V-shaped rest between elastic lock, left being pierced by hollow epoxy resins insulation bar
The left end of the punching epoxy resins insulation bar at end is provided with handle.
The applying method of of ac is scurried into a kind of transforming plant DC power-supply system, is comprised the following steps：
The first step, by Rogowski coil wound clockwise on upper half C-shaped iron core and lower half C-shaped iron core, in upper half C-shaped iron core
Elastic lock is set with the left end junction of lower half C-shaped iron core, sets and blocks on the upper half C-shaped iron core above elastic lock
Hoop is worn on two clamping tongues of front band and connects axis pin, lower catch hoop is set on the lower half C-shaped iron core below elastic lock,
It is worn on two clamping tongues of lower catch hoop and connects lower bearing pin, the upper pendulum bar of hinged V-shaped rest on upper pin, the hinged V-arrangement on lower bearing pin
The draft link of stent sets screw hole in the bottom of V-shaped rest, the screw hole and cavity ring that V-shaped rest is set by V-shaped rest bottom
The right end of oxygen insulation resin bar is screwed together, the activity grafting punching epoxy resins insulation in hollow epoxy resins insulation bar
Bar sets rubber pad, in V-shaped rest in the right end for being pierced by the punching epoxy resins insulation bar of hollow epoxy resins insulation bar right end
Bottom on the inside of and elastic lock between tension spring is set, it is exhausted in the punching epoxy resin for being pierced by hollow epoxy resins insulation bar left end
The left end of edge bar sets handle；
Second step, operation handle inwardly push away punching epoxy resins insulation bar, will by rubber pad apical grafting on elastic lock
Upper half C-shaped iron core and the right end junction opening of lower half C-shaped iron core are opened, and dc bus is embedded in by right end junction opening
Into the annular core of output type current transformer, operation handle is pulled outwardly punching epoxy resins insulation bar, and right end junction is opened
Mouth Natural closure；
3rd step, one end lead-out wire ground connection by the Rogowski coil of output type current transformer, output type current transformer
The other end lead-out wire of Rogowski coil and the output terminal of single-phase voltage regulator link together；
The output voltage of single-phase voltage regulator is adjusted to 0 by the 4th step, and the input terminal of single-phase voltage regulator is exchanged with 220 volts
Power supply links together, and slowly adjusts the voltage adjusting knob of single-phase voltage regulator.
The of ac bringing device of the present invention is output CT using open-type Rogowski coil, and uses hollow asphalt mixtures modified by epoxy resin
Fat insulating bar and punching epoxy resins insulation bar are engaged the annular opening mode for opening output CT, without opening or contacting direct current
Electric power loop, you can output CT is placed on dc bus, of ac is applied to by DC power supply circuit by electromagnetic induction, more
Add highly effective and safe, be detection scurries into alarm and survey is cited sb. for meritorious service energy with exchanging for evaluation transforming plant DC power-supply system insulating monitor
A kind of live simple operations method.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of the operating mechanism of the output type voltage transformer 16 of the present invention；
Fig. 3 is the structure diagram of the output type voltage transformer 16 of the present invention.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
The bringing device of of ac is scurried into a kind of transforming plant DC power-supply system, is exchanged including dc bus 13,220V
Power supply 14 and single-phase voltage regulator 15, be connected on dc bus 13 16,220 volts of AC powers 14 of output type current transformer with
15 input terminal of single-phase voltage regulator links together, one end lead-out wire ground connection of the Rogowski coil 17 of output type current transformer 16,
The other end lead-out wire 3 of the Rogowski coil 17 of output type current transformer 16 is connected to one with the output terminal of single-phase voltage regulator 15
It rises.
Rogowski coil 17 be wound clockwise on upper half C-shaped iron core 2 and lower half C-shaped iron core 1, in upper half C-shaped iron core 2
The left end junction of lower half C-shaped iron core 1 is provided with elastic lock 12, is set on the upper half C-shaped iron core 2 above elastic lock 12
Front band 10 is equipped with, is worn on two clamping tongues of front band 10 and is connected to upper pin 9, the lower half C-shaped iron below elastic lock 12
Lower catch hoop is provided on core 1, is worn on two clamping tongues of lower catch hoop and is connected to lower bearing pin, V-shaped rest 8 is hinged on upper pin 9
Upper pendulum bar, the draft link of V-shaped rest 8 is hinged on lower bearing pin, screw hole, V-shaped rest 8 are provided in the bottom of V-shaped rest 8
The right end of the screw hole and hollow epoxy resins insulation bar 4 that are set by 8 bottom of V-shaped rest is screwed together, in hollow asphalt mixtures modified by epoxy resin
Activity is plugged with punching epoxy resins insulation bar 5 in fat insulating bar 4, is being pierced by the punching of hollow 4 right end of epoxy resins insulation bar
The right end of epoxy resins insulation bar 5 is provided with rubber pad 7, is provided on the inside of the bottom of V-shaped rest 8 between elastic lock 12
Tension spring 11 is provided with handle 6 in the left end for the punching epoxy resins insulation bar 5 for being pierced by hollow 4 left end of epoxy resins insulation bar.
The applying method of of ac is scurried into a kind of transforming plant DC power-supply system, is comprised the following steps：
The first step, by 17 wound clockwise of Rogowski coil on upper half C-shaped iron core 2 and lower half C-shaped iron core 1, in upper half C-shaped
Iron core 2 and the left end junction of lower half C-shaped iron core 1 set elastic lock 12, the upper half C-shaped iron core 2 above elastic lock 12
Upper setting front band 10 is worn on two clamping tongues of front band 10 and connects axis pin 9, the lower half C-shaped iron below elastic lock 12
Lower catch hoop is set on core 1, is worn on two clamping tongues of lower catch hoop and connects lower bearing pin, the upper pendulum of hinged V-shaped rest 8 on upper pin 9
Bar, the draft link of hinged V-shaped rest 8 on lower bearing pin, sets screw hole, V-shaped rest 8 passes through V-arrangement branch in the bottom of V-shaped rest 8
The right end of screw hole and hollow epoxy resins insulation bar 4 that 8 bottom of frame is set is screwed together, in hollow epoxy resins insulation bar 4
Middle activity grafting punching epoxy resins insulation bar 5 is being pierced by the punching epoxy resins insulation of hollow 4 right end of epoxy resins insulation bar
The right end of bar 5 sets rubber pad 7, sets tension spring 11 between elastic lock 12 on the inside of the bottom of V-shaped rest 8, is being pierced by sky
The left end of the punching epoxy resins insulation bar 5 of 4 left end of heart epoxy resins insulation bar sets handle 6；
Second step, operation handle 6 inwardly push away punching epoxy resins insulation bar 5, by 7 apical grafting of rubber pad in elastic lock 12
On, upper half C-shaped iron core 2 and lower half C-shaped iron core 1 are pushed away to the right, and front band 10 is swung up, and lower catch hoop is to lower swing, by upper half C
Shape iron core 2 and the right end junction opening of lower half C-shaped iron core 1 are opened, and dc bus 13 is embedded in by right end junction opening
Into the annular core of output type current transformer 16, operation handle 6 is pulled outwardly punching epoxy resins insulation bar 5, rubber pad 7 from
Elastic lock 12 is opened, tension spring 11 resets upper half C-shaped iron core 2 and lower half C-shaped iron core 1, right end junction opening Natural closure；
3rd step, one end lead-out wire ground connection by the Rogowski coil 17 of output type current transformer 16, output type electric current are mutual
The other end lead-out wire 3 and the output terminal of single-phase voltage regulator 15 of the Rogowski coil 17 of sensor 16 link together；
The output voltage of single-phase voltage regulator 15 is adjusted to 0 by the 4th step, and the input terminal of single-phase voltage regulator 15 and 220V are handed over
Galvanic electricity source 14 links together, and slowly adjusts the voltage adjusting knob of single-phase voltage regulator 15, and observes DC power system exchange
The of ac for scurrying into direct current monitoring device shows and acts situation, and carries out relevant evaluation.
Claims (2)
1. the bringing device of of ac is scurried into a kind of transforming plant DC power-supply system, including dc bus（13）, 220V exchange
Power supply（14）And single-phase voltage regulator（15）, which is characterized in that in dc bus（13）On be connected with output type current transformer
（16）, 220 volts of AC powers（14）With single-phase voltage regulator（15）Input terminal links together, output type current transformer（16）'s
Rogowski coil（17）One end lead-out wire ground connection, output type current transformer（16）Rogowski coil（17）Other end lead-out wire
（3）With single-phase voltage regulator（15）Output terminal link together.
2. the bringing device of of ac, feature are scurried into a kind of transforming plant DC power-supply system according to claim 1
It is, Rogowski coil（17）It is wound clockwise in upper half C-shaped iron core（2）With lower half C-shaped iron core（1）On, in upper half C-shaped iron
Core（2）With lower half C-shaped iron core（1）Left end junction be provided with elastic lock（12）, in elastic lock（12）The upper half C of top
Shape iron core（2）On be provided with front band（10）, in front band（10）Two clamping tongues on wear and be connected to upper pin（9）, in snap lock
Button（12）The lower half C-shaped iron core of lower section（1）On be provided with lower catch hoop, wear on two clamping tongues of lower catch hoop and be connected to lower bearing pin,
Upper pin（9）On be hinged with V-shaped rest（8）Upper pendulum bar, V-shaped rest is hinged on lower bearing pin（8）Draft link, in V-arrangement
Stent（8）Bottom be provided with screw hole, V-shaped rest（8）Pass through V-shaped rest（8）The screw hole that bottom is set and hollow epoxy resin
Insulating bar（4）Right end be screwed together, in hollow epoxy resins insulation bar（4）Middle activity is plugged with punching epoxy resins insulation
Bar（5）, it is being pierced by hollow epoxy resins insulation bar（4）The punching epoxy resins insulation bar of right end（5）Right end be provided with rubber
Pad（7）, in V-shaped rest（8）Bottom on the inside of and elastic lock（12）Between be provided with tension spring（11）, it is being pierced by hollow asphalt mixtures modified by epoxy resin
Fat insulating bar（4）The punching epoxy resins insulation bar of left end（5）Left end be provided with handle（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721378672.1U CN207396697U (en) | 2017-10-24 | 2017-10-24 | The bringing device of of ac is scurried into transforming plant DC power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721378672.1U CN207396697U (en) | 2017-10-24 | 2017-10-24 | The bringing device of of ac is scurried into transforming plant DC power-supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207396697U true CN207396697U (en) | 2018-05-22 |
Family
ID=62330031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721378672.1U Withdrawn - After Issue CN207396697U (en) | 2017-10-24 | 2017-10-24 | The bringing device of of ac is scurried into transforming plant DC power-supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207396697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741573A (en) * | 2017-10-24 | 2018-02-27 | 国网山西省电力公司电力科学研究院 | The bringing device and applying method of of ac are scurried into transforming plant DC power-supply system |
-
2017
- 2017-10-24 CN CN201721378672.1U patent/CN207396697U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741573A (en) * | 2017-10-24 | 2018-02-27 | 国网山西省电力公司电力科学研究院 | The bringing device and applying method of of ac are scurried into transforming plant DC power-supply system |
| CN107741573B (en) * | 2017-10-24 | 2019-12-13 | 国网山西省电力公司电力科学研究院 | Applying device and applying method for fleeing-in alternating current in direct-current power supply system of transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180522 Effective date of abandoning: 20191213 |