CN106932683A - A kind of quick decision maker of 10KV electric power systems single-phase earthing - Google Patents
A kind of quick decision maker of 10KV electric power systems single-phase earthing Download PDFInfo
- Publication number
- CN106932683A CN106932683A CN201710183367.5A CN201710183367A CN106932683A CN 106932683 A CN106932683 A CN 106932683A CN 201710183367 A CN201710183367 A CN 201710183367A CN 106932683 A CN106932683 A CN 106932683A
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- China
- Prior art keywords
- connection portion
- normally opened
- electric power
- relay
- opened contact
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
Abstract
The invention provides a kind of quick decision maker of 10KV electric power systems single-phase earthing, including input circuit and output loop；Input circuit includes the zero sequence current mutual inductor on the straight distribution of power distribution cabinet bus, the coil of secondary side one grounding relay of series connection of the zero sequence current mutual inductor；Output loop includes power supply, signal relay and alarm lamp HD, the coil of signal relay connects to form the first series connection portion with the first normally opened contact of grounding relay, first normally opened contact of signal relay connects to form the second series connection portion with alarm lamp HD, first series connection portion connects with described second, and portion is in parallel to form the first parallel connection portion, and the first parallel connection portion is connected on the power output end of the power supply；Second normally opened contact of signal relay is in parallel with the normally opened contact of the grounding relay；3rd normally opened contact of signal relay and the coils from parallel connection of coils of the grounding relay.The present invention is quick and relatively accurately finds out 10KV electric power system single-phase earthing circuits.
Description
Technical field
Device field is searched the present invention relates to electric power system single-phase earthing line, specifically a kind of 10KV electric power systems are single-phase to be connect
The quick decision maker in ground.
Background technology
At present, many mortar businesses of China are designed with grid-connected transformer station, and generally using Xin An transformer stations, it passes through 10KV
Circuit is grid-connected with power system.And in the middle of actual production power supply process, power distribution cabinet two buss lines earth fault frequently occurs.Electricity
Force system track stability is poor, especially in rainy weather.
Earth fault line judgement is generally carried out using " drawing road " method in the prior art, and this fault handling method is grasped
Make it is cumbersome, judge that efficiency is low, and then the safe operation of unit and power network can be influenceed to a certain extent, can if it there is accident
Cause serious financial consequences.This is the deficiencies in the prior art part.
The present invention takes place frequently present situation for line-to-ground, designs a kind of quick decision maker of 10KV electric power systems single-phase earthing,
For quick and relatively accurately find out 10KV electric power system single-phase earthing circuits, the peace of unit and power network is ensured to a certain extent
Row for the national games.
The content of the invention
The technical problems to be solved by the invention are, in view of the shortcomings of the prior art, there is provided a kind of 10KV electric power systems list
Quick decision maker is mutually grounded, for quick and relatively accurately find out 10KV electric power system single-phase earthing circuits, to a certain degree
On ensure the safe operation of unit and power network.
In order to solve the above technical problems, the invention provides a kind of quick decision maker of 10KV electric power systems single-phase earthing,
Including input circuit and output loop；
Described input circuit includes the zero sequence current mutual inductor on the straight distribution of power distribution cabinet bus, and the zero-sequence current is mutual
The coil of the one grounding relay LX of secondary side series connection of sensor；
Described output loop includes power supply, signal relay KA and alarm lamp HD, the signal relay KA's
Coil connects to form the first series connection portion with first normally opened contact of the grounding relay LX, and the first of the signal relay KA
Normally opened contact connects to form the second series connection portion with described alarm lamp HD, and described the first series connection portion and described second goes here and there
Connection portion is in parallel to form the first parallel connection portion, and the first parallel connection portion is connected on the power output end of the power supply；The signal after
Second normally opened contact of electrical equipment KA is in parallel with the normally opened contact of the grounding relay LX；
3rd normally opened contact of the signal relay KA and the coils from parallel connection of coils of the grounding relay LX.
To increase the convenience of circuit control, controlling switch is in series with the first described parallel connection portion.
For the relevant staff ensured in control room can in time know 10KV electric power systems single-phase earthing whether information,
Described output loop also includes an audible alarm unit, and the audible alarm unit is second normal by the grounding relay LX's
Contact series are opened at the two ends of the power supply.
Preferably, described audible alarm unit includes transparent housing, is provided with a dividing plate in the housing, it is described every
The inner chamber that the housing is surrounded is divided into upper plenum and lower cavity by plate, is covered with described dividing plate for connecting the upper plenum
With the passage of lower cavity；A cross bar is provided with described upper plenum, one group of windbell is equipped with cross bar, each windbell is uniformly distributed；
A motor is equipped with described lower cavity, a fan is equipped with the output shaft of the motor.When specifically used, the described motor
The two ends of the power supply are connected on by second normally opened contact of the grounding relay LX.The use of windbell, not only may be used
To alarm, and the alarm sound for sending is more melodious.
Preferably, the upper surface of the cross bar is provided with one group of spacing U-type groove for installing windbell.When using, will
Each windbell correspondence is arranged in different spacing U-type grooves, can effectively prevent slip of the windbell on cross bar.
One group of hollow colour ball is provided with described lower cavity, the bulb diameter of each hollow colour ball is all higher than the hole of the passage
Diameter.Hollow colour ball quality is small, in the presence of air stream, can be waved in described upper plenum, can not only increase alarm
Visual effect, moreover it is possible to when hollow colour ball encounters windbell, increase windbell warning effect.
The dividing plate is the recessed arc of transverse slat or middle part.
The top of the housing carries end cap, is easy to relevant staff that the wind in upper plenum is changed according to the hobby of oneself
Bell.
Compared with prior art, the advantage of the invention is that：
(1) the quick decision maker of 10KV electric power systems single-phase earthing of the present invention, including input circuit and output loop, its
Middle input circuit includes the zero sequence current mutual inductor on the straight distribution of power distribution cabinet bus, the two of the zero sequence current mutual inductor
The coil of one grounding relay LX of secondary side series connection；Described output loop refers to including power supply, signal relay KA and alarm
Show lamp HD, the coil of the signal relay KA connects to form the first series connection with first normally opened contact of the grounding relay LX
Portion, first normally opened contact of the signal relay KA connects to form the second series connection portion with described alarm lamp HD, described
The first series connection portion connect that portion is in parallel to form the first parallel connection portion with described second, the first parallel connection portion be connected on it is described power it is electric
The power output end in source；The normally opened contact of second normally opened contact of the signal relay KA and the grounding relay LX is simultaneously
Connection；3rd normally opened contact of the signal relay KA and the coils from parallel connection of coils of the grounding relay LX；When using, match somebody with somebody when described
When grounding phenomenon occurs in the electric straight distribution of cabinet bus, grounding relay LX obtains electric snap action, and the first of grounding relay LX is normal
The closing of contact is opened, signal relay KA obtains electric self-locking and short circuit grounding relay LX coils, while alarm lamp HD is long bright, work
Make personnel according to the circuit that current ground connection is found by alarm lamp HD；Additionally, in view of being needed after signal relay KA actions
Manual reset, therefore, even if power supply in the output loop is interrupted, staff also can quickly and relatively accurately
Determine whether the straight distribution of power distribution cabinet bus is grounded, and then the circuit of 10KV electric power system single-phase earthings can be rapidly found out,
It is more practical；
(2) the invention provides a kind of audible alarm unit, simple structure, it is easy to implement, the warning device includes transparent shell
Body, and a dividing plate that the inner chamber that the housing is surrounded is divided into upper plenum and lower cavity is provided with housing, it is covered with dividing plate
Passage for connecting the upper plenum and lower cavity, is provided with one thereon equipped with one group of cross bar of windbell, lower sky in upper plenum
Equipped with the motor equipped with fan on its output shaft in chamber, the motor of the warning device obtain it is electric after, motor drives described fan
Rotate, and then be produced from the air stream that lower cavity is flow in upper plenum by described airport, it is horizontal in the presence of air stream
Windbell on bar sends alarm sound and is alarmed, and the alarm sound for sending is more melodious, more practical.
As can be seen here, compared with prior art, with prominent substantive distinguishing features and significant progress, it is implemented the present invention
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is the circuit principle structure schematic diagram of the specific embodiment of the invention 1；
Fig. 2 is the circuit principle structure schematic diagram of the specific embodiment of the invention 2；
Fig. 3 is the structural representation of audible alarm unit shown in above-mentioned Fig. 2.
Wherein：Fig. 1 is 1, housing, 2, dividing plate, 21, passage, 3, motor, 31, output shaft, 4, fan, 5, cross bar, 51,
Spacing U-type groove, 6, end cap, 7, windbell, 8, upper plenum, 9, lower cavity, 10, input circuit, 11, output loop, 12, zero-sequence current
Transformer, 13, power distribution cabinet bus, 14, straight distribution, 15, audible alarm unit.
Specific embodiment
To make technical scheme and advantage clearer, below in conjunction with accompanying drawing, to technical scheme
It is clearly and completely described.
Specific embodiment 1：
As shown in figure 1, a kind of quick decision maker of 10KV electric power systems single-phase earthing of the invention, including input circuit 10 and defeated
Go out loop 11.Described input circuit 10 includes the zero sequence current mutual inductor 12 on the straight distribution of power distribution cabinet bus, described
The coil of the one grounding relay LX of secondary side series connection of zero sequence current mutual inductor 12.Described output loop 11 includes power supply electricity
Source, signal relay KA and alarm lamp HD, the coil of the signal relay KA and the first of the grounding relay LX
Normally opened contact connects to form the first series connection portion, first normally opened contact of the signal relay KA and described alarm lamp HD
Series connection forms the second series connection portion, and the first described series connection portion connects with described second, and portion is in parallel to form the first parallel connection portion, and this
One parallel connection portion is connected on the power output end of the power supply；Second normally opened contact of the signal relay KA connects with described
The normally opened contact of ground relay LX is in parallel；3rd normally opened contact of the signal relay KA and the line of the grounding relay LX
Circle is in parallel.Controlling switch is in series with the first described parallel connection portion, in the present embodiment, described controlling switch is using normally closed
Type controlling switch.
When using, connect controlling switch, once straight distribution 14 is grounded, then grounding relay LX coils obtain electric, the ground connection after
The first normally opened contact closure of electrical equipment LX, signal relay KA obtains electric self-locking and short circuit grounding relay LX coils, same to alarm
Indicator lamp HD is long bright, and staff can quickly confirm the circuit of current ground connection according to alarm lamp HD.
Additionally, in view of signal relay KA action after need manual reset, therefore, even if the confession in the output loop 11
Electric power interruptions, staff also can quickly and relatively accurately determine whether the straight distribution of power distribution cabinet bus is grounded, and enter
And the circuit of 10KV electric power system single-phase earthings can be rapidly found out, it is more practical.
In the present embodiment, described power supply is civil power.
Specific embodiment 2：
Fig. 2 and 3 is another specific embodiment of the invention, and the specific embodiment is different compared with specific embodiment 1
Part is that output loop of the present invention 11 also includes an audible alarm unit 15, and the audible alarm unit 15 passes through institute
The second normally opened contact for stating grounding relay LX is connected on the two ends of the power supply.
In the present embodiment, described audible alarm unit 15 includes being provided with one in transparent housing 1, the housing 1
The inner chamber that the housing 1 is surrounded is divided into upper plenum 8 and lower cavity 9, cloth on described dividing plate 2 by dividing plate 2, described dividing plate 2
The full passage 21 for being used to connect the upper plenum 8 and lower cavity 9；A cross bar 5 is provided with described upper plenum 8, is pacified on cross bar 5
There is one group of windbell 7, each windbell 7 is uniformly distributed；A motor 3 is equipped with described lower cavity 9, on the output shaft 31 of the motor 3
Equipped with a fan 4.Described audible alarm unit 15 passes through the second normally opened contact string of its motor 3 and the grounding relay LX
It is associated in the two ends of the power supply.
Once straight distribution 14 is grounded, then grounding relay LX coils obtain electric, second normally opened contact of grounding relay LX
Closure, the warning device obtain it is electric after, motor 3 drives described fan 4 to rotate, and then produces and the air-flow produced by making is from lower sky
The air stream that chamber 9 is entered in upper plenum 8 by described passage 21, in the presence of air stream, the windbell 7 on cross bar 5 is sent out
Go out alarm sound to be alarmed, and the alarm sound for sending is more melodious, it is to avoid the generation of acoustic noise.
The upper surface of the cross bar 5 is provided with one group of spacing U-type groove 51 for installing windbell 7, to prevent from being arranged on horizontal stroke
There is the slip of installation site in the windbell 7 on bar 5, and then influence warning effect.
Wherein, in the present embodiment, the windbell 7 installed on cross bar 5, using the windbell 7 with hanged hook, installs
When, during above-mentioned each windbell 7 hung into the corresponding spacing U-type groove 51 for hooking the upper end of cross bar 5 by it respectively, handling side
Just, it is easy to change windbell 7.
In the present embodiment, one group of hollow colour ball is provided with described lower cavity 9, the bulb diameter of each hollow colour ball is big
In the bore dia of the passage 21.If straight distribution 14 is grounded, motor 3 obtains the fan in electric rotation, and then drive motor 3
4 rotate, and the air-flow that the fan 4 is produced enters described upper plenum 8, the entrance upper plenum by described passage 21
8 air-flow can upwards blow afloat described hollow colour ball, and then be waved in upper plenum 8, and the hollow colour ball for waving not only may be used
Increase the visual effect of alarm, moreover it is possible to encounter windbell 7, and then increase the warning effect of windbell 7, and then be easy to staff quick
Confirm the circuit of current ground connection.
In the present embodiment, the dividing plate 2 is the recessed arc in middle part, this hollow coloured silk that furthered to a certain extent
Ball and the distance of windbell 7, make hollow colour ball be easy to touch corresponding windbell 7 when being blown afloat.
In the present embodiment, the top of the housing 1 carries end cap 6.The use of the end cap 6, is easy to related work
Personnel change the color and pattern of windbell 7 according to the hobby of oneself, more practical.
In the present embodiment, the present invention, using described audible alarm unit 15, is to the alarm lamp HD
Additional alarm mode.Fail to find that alarm lamp HD is bright in time in staff, or fail to find the alarm that this is described in time
When indicator lamp HD failures do not work, the present invention can also be alarmed by described audible alarm unit 15, which increase the present invention
The reliability of alarm.
Additionally, to sum up, simple structure of the present invention, it is easy to implement.
Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing implementation
Mode has been described in detail to the present invention, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in implementation method is modified, or carries out equivalent to which part technical characteristic；And these are repaiied
Change or replace, do not make the scope of essence disengaging each implementation method technical scheme of the invention of appropriate technical solution.
Claims (8)
1. a kind of quick decision maker of 10KV electric power systems single-phase earthing, it is characterised in that：Including input circuit and output loop；
Described input circuit includes the zero sequence current mutual inductor on the straight distribution of power distribution cabinet bus, and the zero-sequence current is mutual
The coil of the one grounding relay LX of secondary side series connection of sensor；
Described output loop includes power supply, signal relay KA and alarm lamp HD, the signal relay KA's
Coil connects to form the first series connection portion with first normally opened contact of the grounding relay LX, and the first of the signal relay KA
Normally opened contact connects to form the second series connection portion with described alarm lamp HD, and described the first series connection portion and described second goes here and there
Connection portion is in parallel to form the first parallel connection portion, and the first parallel connection portion is connected on the power output end of the power supply；The signal after
Second normally opened contact of electrical equipment KA is in parallel with the normally opened contact of the grounding relay LX；
3rd normally opened contact of the signal relay KA and the coils from parallel connection of coils of the grounding relay LX.
2. the quick decision maker of 10KV electric power systems single-phase earthing according to claim 1, it is characterised in that：Described
Controlling switch is in series with one parallel connection portion.
3. the quick decision maker of 10KV electric power systems single-phase earthing according to claim 1 and 2, it is characterised in that：It is described
Output loop also include an audible alarm unit, the audible alarm unit by the grounding relay LX second it is normally opened touch
Point is connected on the two ends of the power supply.
4. the quick decision maker of 10KV electric power systems single-phase earthing according to claim 3, it is characterised in that：Described sound
Sound warning device includes transparent housing, and a dividing plate, the inner chamber that described dividing plate surrounds the housing are provided with the housing
Upper plenum and lower cavity are divided into, the passage for connecting the upper plenum and lower cavity is covered with described dividing plate；It is described
Upper plenum in be provided with a cross bar, one group of windbell is equipped with cross bar, each windbell is uniformly distributed；Equipped with an electricity in described lower cavity
Machine, is equipped with a fan on the output shaft of the motor.
5. the quick decision maker of 10KV electric power systems single-phase earthing according to claim 4, it is characterised in that：The cross bar
Upper surface be provided with one group for installing the spacing U-type groove of windbell.
6. 10KV quick decision makers of electric power system single-phase earthing according to claim 4 or 5, it is characterised in that：It is described
Lower cavity in be provided with one group of hollow colour ball, the bulb diameter of each hollow colour ball is all higher than the bore dia of the passage.
7. 10KV quick decision makers of electric power system single-phase earthing according to claim 4 or 5, it is characterised in that：It is described
Dividing plate is the recessed arc of transverse slat or middle part.
8. 10KV quick decision makers of electric power system single-phase earthing according to claim 4 or 5, it is characterised in that：It is described
The top of housing carries end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183367.5A CN106932683A (en) | 2017-03-24 | 2017-03-24 | A kind of quick decision maker of 10KV electric power systems single-phase earthing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183367.5A CN106932683A (en) | 2017-03-24 | 2017-03-24 | A kind of quick decision maker of 10KV electric power systems single-phase earthing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106932683A true CN106932683A (en) | 2017-07-07 |
Family
ID=59426081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710183367.5A Pending CN106932683A (en) | 2017-03-24 | 2017-03-24 | A kind of quick decision maker of 10KV electric power systems single-phase earthing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106932683A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111534U (en) * | 1991-12-26 | 1992-07-29 | 骆仲华 | One-phase grounding wire-selective device |
| JPH1184037A (en) * | 1997-09-02 | 1999-03-26 | Koji Oura | Wind-bell clock |
| CN2391363Y (en) * | 1999-06-22 | 2000-08-09 | 北京兴东方电力设备研究所 | Open type zero-sequence current protector |
| TW201044131A (en) * | 2009-06-11 | 2010-12-16 | Au Optronics Corp | System with alarming function |
| CN203786841U (en) * | 2014-03-31 | 2014-08-20 | 张一荻 | Power off and power on automatic alarm device |
| CN205786965U (en) * | 2016-06-24 | 2016-12-07 | 河北钢铁股份有限公司承德分公司 | The device of a kind of electric power system power generation circuit earthing wire-selecting and comprehensive protector |
| CN205844451U (en) * | 2016-06-23 | 2016-12-28 | 河南科达东大国际工程有限公司 | Electrolytic aluminium factory 10kV cable singlephase earth fault management system |
-
2017
- 2017-03-24 CN CN201710183367.5A patent/CN106932683A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111534U (en) * | 1991-12-26 | 1992-07-29 | 骆仲华 | One-phase grounding wire-selective device |
| JPH1184037A (en) * | 1997-09-02 | 1999-03-26 | Koji Oura | Wind-bell clock |
| CN2391363Y (en) * | 1999-06-22 | 2000-08-09 | 北京兴东方电力设备研究所 | Open type zero-sequence current protector |
| TW201044131A (en) * | 2009-06-11 | 2010-12-16 | Au Optronics Corp | System with alarming function |
| CN203786841U (en) * | 2014-03-31 | 2014-08-20 | 张一荻 | Power off and power on automatic alarm device |
| CN205844451U (en) * | 2016-06-23 | 2016-12-28 | 河南科达东大国际工程有限公司 | Electrolytic aluminium factory 10kV cable singlephase earth fault management system |
| CN205786965U (en) * | 2016-06-24 | 2016-12-07 | 河北钢铁股份有限公司承德分公司 | The device of a kind of electric power system power generation circuit earthing wire-selecting and comprehensive protector |
Non-Patent Citations (1)
| Title |
|---|
| 孙建海: "6kV 中性点不接地系统发生单相接地故障保护优化", 《兰州石化职业技术学院学报》 * |
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Application publication date: 20170707 |
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