CN107741573A - The bringing device and applying method of of ac are scurried into transforming plant DC power-supply system - Google Patents
The bringing device and applying method of of ac are scurried into transforming plant DC power-supply system Download PDFInfo
- Publication number
- CN107741573A CN107741573A CN201711003600.3A CN201711003600A CN107741573A CN 107741573 A CN107741573 A CN 107741573A CN 201711003600 A CN201711003600 A CN 201711003600A CN 107741573 A CN107741573 A CN 107741573A
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- China
- Prior art keywords
- iron core
- shaped
- shaped iron
- bar
- voltage regulator
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Classifications
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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
- G01R31/40—Testing power supplies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Abstract
The invention discloses the bringing device and applying method that of ac is scurried into a kind of transforming plant DC power-supply system, solves the problems, such as that existing easily cause destroys straight-flow system loop 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 end connection.It is a kind of live simple operations method of detection and the sensitivity of evaluation dc source insulating monitor.
Description
Technical field
The present invention relates to a kind of bringing device and method that of ac is scurried into the DC power system of transformer station, it is 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 transformer station（Or power plant）In, when AC power dead electricity, DC power system is transformer station（Or power plant）
The visual plant such as protective loop, control loop, emergency lighting loop and communication equipment working power is provided, to ensureing transformer station
Various kinds of equipment safe and stable operation plays an important role.Because 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
The situation that AC signal scurries into straight-flow system occurs, protection 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 network.Insulating monitoring dress should be configured with 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 periodic detection and comment to the function
Valency, to ensure the normal operation of transformer station.The detection method of prior art is to disconnect transformer station（Or power plant）Dc source
Loop, and by applying the method for of ac in the loop, 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 into DC power supply circuit to provide AC compounent, this way to straight-flow system
Waste time and energy, and the potential safety hazard of larger destruction straight-flow system loop and relevant device be present.
The content of the invention
The invention provides the bringing device and applying method that of ac is scurried into a kind of transforming plant DC power-supply system, solution
Existing easily cause when scurrying into of ac in detecting and evaluating DC power system of having determined destroys straight-flow system loop and phase
Close the technical problem of equipment.
The present invention is that solve above technical problem by the following technical programs：
Scurry into the bringing device of of ac in a kind of transforming plant DC power-supply system, including dc bus, 220V AC powers and
Single-phase voltage regulator, output type current transformer, 220V AC powers and single-phase voltage regulator input are connected with dc bus
Link together, one end lead-out wire ground connection of the Rogowski coil of output type current transformer, the Roche of output type current transformer
The other end lead-out wire of coil and the output end 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 with
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, wears on two clamping tongues of front band and is connected to upper pin, lower card is provided with the lower half C-shaped iron core below elastic lock
Hoop, wears 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 with upper pin, in lower bearing pin
On be hinged with the draft link of V-shaped rest, screw is provided with the bottom of V-shaped rest, V-shaped rest is set by V-shaped rest bottom
The right-hand member of screw and hollow epoxy resin insulating bar be screwed together, activity, which is plugged with, in hollow epoxy resin insulating bar wears
Heart epoxy resin insulating bar, it is provided with the right-hand member for the punching epoxy resins insulation bar for passing hollow epoxy resin insulating bar right-hand member
Rubber blanket, extension spring is provided between elastic lock on the inside of the bottom of V-shaped rest, it is left passing hollow epoxy resin insulating 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, upper half C-shaped iron core with
The left end junction of half C-shaped iron core sets elastic lock, and front band is set on the upper half C-shaped iron core above elastic lock,
Worn on two clamping tongues of front band and connect bearing pin, lower catch hoop is set on the lower half C-shaped iron core below elastic lock, in lower catch hoop
Two clamping tongues on wear and connect lower bearing pin, the upper pendulum bar of V-shaped rest is hinged on upper pin, V-shaped rest is hinged on lower bearing pin
Draft link, screw is set in the bottom of V-shaped rest, and V-shaped rest passes through the screw that V-shaped rest bottom is set and hollow epoxy resin
The right-hand member of insulating bar is screwed together, and activity grafting punching epoxy resins insulation bar, is wearing in hollow epoxy resin insulating bar
The right-hand member for going out the punching epoxy resins insulation bar of hollow epoxy resin insulating bar right-hand member sets rubber blanket, in the bottom of V-shaped rest
Extension spring is set between inner side and elastic lock, is passing the punching epoxy resins insulation bar of hollow epoxy resin insulating bar left end
Left end sets handle；
Second step, operation handle inwardly push away punching epoxy resins insulation bar, by rubber blanket apical grafting on elastic lock, by upper half
The right-hand member junction opening of C-shaped iron core and lower half C-shaped iron core is opened, and dc bus is embedded into by right-hand member junction opening defeated
Go out in the annular core of formula current transformer, operation handle is pulled outwardly punching epoxy resins insulation bar, and right-hand member junction opening is certainly
So closure；
3rd step, one end lead-out wire ground connection by the Rogowski coil of output type current transformer, sieve of output type current transformer
The other end lead-out wire of family name's coil and the output end of single-phase voltage regulator link together；
4th step, the output voltage of single-phase voltage regulator is adjusted to 0, by the input of single-phase voltage regulator and 220 volts of AC powers
Link together, slowly adjust the voltage-regulation 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 put on 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.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the operating mechanism of the output type voltage transformer 16 of the present invention；
Fig. 3 is the structural representation of the output type voltage transformer 16 of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
The bringing device of of ac, including dc bus 13,220V AC powers are scurried into a kind of transforming plant DC power-supply system
14 and single-phase voltage regulator 15, be connected with dc bus 13 16,220 volts of AC powers 14 of output type current transformer with it is single-phase
The input of pressure regulator 15 links together, one end lead-out wire ground connection of the Rogowski coil 17 of output type current transformer 16, output
The output end of the other end lead-out wire 3 and single-phase voltage regulator 15 of the Rogowski coil 17 of formula current transformer 16 links together.
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, 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 with 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 with upper pin 9
Upper pendulum bar, the draft link of V-shaped rest 8 is hinged with lower bearing pin, screw, V-shaped rest 8 are provided with the bottom of V-shaped rest 8
The right-hand member of the screw and hollow epoxy resin insulating bar 4 that are set by the bottom of V-shaped rest 8 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 passing the punching of the hollow right-hand member of epoxy resin insulating bar 4
The right-hand member of epoxy resins insulation bar 5 is provided with rubber blanket 7, is provided with the inside of the bottom of V-shaped rest 8 between elastic lock 12
Extension spring 11, the left end for the punching epoxy resins insulation bar 5 for passing the hollow left end of epoxy resin insulating bar 4 is provided with handle 6.
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 the wound clockwise of Rogowski coil 17 on upper half C-shaped iron core 2 and lower half C-shaped iron core 1, in upper half C-shaped iron core
2 set elastic lock 12 with the left end junction of lower half C-shaped iron core 1, are set on the upper half C-shaped iron core 2 above elastic lock 12
Front band 10 is put, is worn on two clamping tongues of front band 10 and connects bearing pin 9, on the lower half C-shaped iron core 1 below elastic lock 12
Lower catch hoop is set, is worn on two clamping tongues of lower catch hoop and connects lower bearing pin, the upper pendulum bar of V-shaped rest 8 is hinged on upper pin 9,
The draft link of V-shaped rest 8 is hinged on lower bearing pin, screw is set in the bottom of V-shaped rest 8, V-shaped rest 8 passes through the bottom of V-shaped rest 8
The right-hand member of the screw and hollow epoxy resin insulating bar 4 that set is held to be screwed together, it is movable in hollow epoxy resin insulating bar 4
Grafting punching epoxy resins insulation bar 5, passing the punching epoxy resins insulation bar 5 of the hollow right-hand member of epoxy resin insulating bar 4
Right-hand member sets rubber blanket 7, sets extension spring 11 between elastic lock 12 on the inside of the bottom of V-shaped rest 8, is passing hollow epoxy
The left end of the punching epoxy resins insulation bar 5 of the left end of insulation resin bar 4 sets handle 6；
Second step, operation handle 6 inwardly push away punching epoxy resins insulation bar 5, by the apical grafting of rubber blanket 7 on elastic lock 12,
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-shaped
The right-hand member junction opening of iron core 2 and lower half C-shaped iron core 1 is opened, and dc bus 13 is embedded into by right-hand member junction opening
In the annular core of output type current transformer 16, operation handle 6 is pulled outwardly punching epoxy resins insulation bar 5, and rubber blanket 7 leaves
Elastic lock 12, extension spring 11 reset upper half C-shaped iron core 2 and lower half C-shaped iron core 1, right-hand member 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 current transformer
The output end of the other end lead-out wire 3 and single-phase voltage regulator 15 of 16 Rogowski coil 17 links together；
4th step, the output voltage of single-phase voltage regulator 15 is adjusted to 0, by the input of single-phase voltage regulator 15 and 220V alternating currents
Source 14 links together, and slowly adjusts the voltage-regulation knob of single-phase voltage regulator 15, and observes DC power system exchange and scurry into
The of ac of direct current monitoring device shows and acted situation, and carries out relevant evaluation.
Claims (3)
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）, it is characterised 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 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 end link together.
2. the bringing device of of ac, its 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, worn 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 with lower bearing pin（8）Draft link, in V-arrangement
Support（8）Bottom be provided with screw, V-shaped rest（8）Pass through V-shaped rest（8）The screw that bottom is set and hollow epoxy resin
Insulating bar（4）Right-hand member be screwed together, in hollow epoxy resin insulating bar（4）Middle activity is plugged with punching epoxy resins insulation
Bar（5）, passing hollow epoxy resin insulating bar（4）The punching epoxy resins insulation bar of right-hand member（5）Right-hand member be provided with rubber
Pad（7）, in V-shaped rest（8）Bottom on the inside of and elastic lock（12）Between be provided with extension spring（11）, passing 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）.
3. scurrying into the applying method of of ac in a kind of transforming plant DC power-supply system, comprise the following steps：
The first step, by Rogowski coil（17）Wound clockwise is in upper half C-shaped iron core（2）With lower half C-shaped iron core（1）On, in upper half C
Shape iron core（2）With lower half C-shaped iron core（1）Left end junction set elastic lock（12）, in elastic lock（12）Top it is upper
Half C-shaped iron core（2）Upper setting front band（10）, in front band（10）Two clamping tongues on wear and connect bearing pin（9）, in elastic lock
（12）The lower half C-shaped iron core of lower section（1）Upper setting lower catch hoop, worn on two clamping tongues of lower catch hoop and connect lower bearing pin, in upper pin
（9）Upper be hinged V-shaped rest（8）Upper pendulum bar, on lower bearing pin be hinged V-shaped rest（8）Draft link, in V-shaped rest（8）Bottom
End sets screw, V-shaped rest（8）Pass through V-shaped rest（8）The screw that bottom is set and hollow epoxy resin insulating bar（4）The right side
End is screwed together, in hollow epoxy resin insulating bar（4）Middle activity grafting punching epoxy resins insulation bar（5）, passing sky
Heart epoxy resin insulating bar（4）The punching epoxy resins insulation bar of right-hand member（5）Right-hand member set rubber blanket（7）, in V-shaped rest
（8）Bottom on the inside of and elastic lock（12）Between extension spring is set（11）, passing hollow epoxy resin insulating bar（4）Left end
Punching epoxy resins insulation bar（5）Left end set handle（6）；
Second step, operation handle（6）Inwardly push away punching epoxy resins insulation bar（5）, pass through rubber blanket（7）Apical grafting is in elastic lock
（12）On, by upper half C-shaped iron core（2）With lower half C-shaped iron core（1）Right-hand member junction opening open, by dc bus（13）It is logical
Cross right-hand member junction opening and be embedded into output type current transformer（16）Annular core in, operation handle（6）It is pulled outwardly punching
Epoxy resins insulation bar（5）, right-hand member junction opening Natural closure；
3rd step, by output type current transformer（16）Rogowski coil（17）One end lead-out wire with the earth link together,
Output type current transformer（16）Rogowski coil（17）Other end lead-out wire（3）With single-phase voltage regulator（15）Output end connect
It is connected together；
4th step, by single-phase voltage regulator（15）Output voltage be adjusted to 0, by single-phase voltage regulator（15）Input and 220 volts
AC power（14）Link together, slowly adjust single-phase voltage regulator（15）Voltage-regulation knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003600.3A CN107741573B (en) | 2017-10-24 | 2017-10-24 | Applying device and applying method for fleeing-in alternating current in direct-current power supply system of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003600.3A CN107741573B (en) | 2017-10-24 | 2017-10-24 | Applying device and applying method for fleeing-in alternating current in direct-current power supply system of transformer substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107741573A true CN107741573A (en) | 2018-02-27 |
| CN107741573B CN107741573B (en) | 2019-12-13 |
Family
ID=61238004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711003600.3A Active CN107741573B (en) | 2017-10-24 | 2017-10-24 | Applying device and applying method for fleeing-in alternating current in direct-current power supply system of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107741573B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202854307U (en) * | 2012-09-24 | 2013-04-03 | 温州市科星电子有限公司 | Alternating current ingress into direct current power supply alarm device for transformer station |
| CN203838236U (en) * | 2013-10-17 | 2014-09-17 | 国家电网公司 | Device for detecting electric crossing of direct-current system |
| CN104330681A (en) * | 2013-07-22 | 2015-02-04 | 艾默生网络能源有限公司 | Device for detecting AC entering DC bus in DC power system |
| CN207396697U (en) * | 2017-10-24 | 2018-05-22 | 国网山西省电力公司电力科学研究院 | The bringing device of of ac is scurried into transforming plant DC power-supply system |
-
2017
- 2017-10-24 CN CN201711003600.3A patent/CN107741573B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202854307U (en) * | 2012-09-24 | 2013-04-03 | 温州市科星电子有限公司 | Alternating current ingress into direct current power supply alarm device for transformer station |
| CN104330681A (en) * | 2013-07-22 | 2015-02-04 | 艾默生网络能源有限公司 | Device for detecting AC entering DC bus in DC power system |
| CN203838236U (en) * | 2013-10-17 | 2014-09-17 | 国家电网公司 | Device for detecting electric crossing of direct-current system |
| CN207396697U (en) * | 2017-10-24 | 2018-05-22 | 国网山西省电力公司电力科学研究院 | The bringing device of of ac is scurried into transforming plant DC power-supply system |
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| Publication number | Publication date |
|---|---|
| CN107741573B (en) | 2019-12-13 |
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