CN105958359A - Lockout circuit for PT cabinet grounding handcart - Google Patents
Lockout circuit for PT cabinet grounding handcart Download PDFInfo
- Publication number
- CN105958359A CN105958359A CN201610415860.0A CN201610415860A CN105958359A CN 105958359 A CN105958359 A CN 105958359A CN 201610415860 A CN201610415860 A CN 201610415860A CN 105958359 A CN105958359 A CN 105958359A
- Authority
- CN
- China
- Prior art keywords
- cabinet
- handcart
- locking
- lockout
- little bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a lockout circuit for a PT cabinet grounding handcart. The lockout circuit comprises multiple auxiliary contacts of the grounding handcart, wherein the multiple auxiliary contacts are electrically connected to a control miniature bus and lockout miniature buses respectively; and the lockout miniature buses are electrically connected to a lockout loop. Therefore, a repeat relay is omitted, the lockout loop is simplified, and the safety is improved.
Description
Technical field
The present invention relates to technical field of electric power, be specifically related to a kind of PT cabinet earth handcart exclusive circuit.
Background technology
Busbar grounding handcart is generally mounted in voltage transformer cabinet (PT cabinet), is configured with voltage mutual inducer trolley and the auxiliary contact of busbar grounding handcart and secondary distribution in voltage transformer cabinet (PT cabinet).Time properly functioning, busbar grounding handcart is pulled out from voltage transformer cabinet (PT cabinet), voltage mutual inducer trolley is pushed and carries out measuring or measuring work；During maintenance, voltage mutual inducer trolley is pulled out, busbar grounding handcart is pushed in voltage transformer cabinet (PT cabinet) so that bus reliable ground, improve work efficiency during maintenance.Visible, busbar grounding handcart is to ensure that the essential safety equipment of personal security when high-tension distribution equipment overhauls.
Owing to earth handcart is to ensure that the essential important measures of personal security when high-tension distribution equipment overhauls, therefore earth handcart with on this section of bus other handcarts electric blocking must be safe and reliable.The electric blocking scheme being widely adopted at present is through this section of PT earth handcart locking, owing to earth handcart itself cannot draw so many auxiliary contact, therefore relay need to be used to be extended, it is connected to other switch cubicles of this section again by extension contact, and concatenate to locked loop, thus significantly increase exclusive circuit complexity, affect the safety of power system.
Summary of the invention
The technical problem to be solved in the present invention is, simplifies the exclusive circuit of existing PT cabinet earth handcart, and improves safety.
To this end, embodiments provide a kind of PT cabinet earth handcart exclusive circuit, including: multiple auxiliary contact of earth handcart, the plurality of auxiliary contact are respectively electrically connected to control little bus and the little bus of locking, and the little bus of described locking is electrically connected to locked loop.
Preferably, the little bus of described locking is 2.
Preferably, the little bus of described locking is placed in the cabinet top of described PT cabinet.
Preferably, the little bus of described control is placed in the cabinet top of described PT cabinet.
Preferably, described auxiliary contact are 4.
The PT cabinet earth handcart exclusive circuit of the embodiment of the present invention, by setting up the little bus of locking, causes the little bus of this locking by the contact of earth handcart, the little bus of this locking is that locked loop is powered, such that it is able to omit weight motor type relay, simplify exclusive circuit, and improve safety.
Accompanying drawing explanation
By being more clearly understood from the features and advantages of the present invention with reference to accompanying drawing, accompanying drawing is schematic and should not be construed as the present invention is carried out any restriction, in the accompanying drawings:
Fig. 1 shows the schematic diagram of a kind of PT cabinet earth handcart exclusive circuit of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
Although being described in conjunction with the accompanying embodiments of the present invention, but those skilled in the art can various modification can be adapted without departing from the spirit and scope of the present invention and modification, within the scope of such amendment and modification each fall within and be defined by the appended claims.
As it is shown in figure 1, embodiments provide a kind of PT cabinet earth handcart exclusive circuit, including:
Multiple auxiliary contact YW1-4 of earth handcart, the plurality of auxiliary contact are respectively electrically connected to control little bus KM and locking little bus YW+/YW-, and the little bus of this locking is electrically connected to locked loop.Specifically, this locked loop is positioned at and other switch cubicles on same section of bus of this PT cabinet, for each handcart of this section of bus of locking.
The PT cabinet earth handcart exclusive circuit of the embodiment of the present invention, by setting up the little bus of locking, causes the little bus of this locking by the contact of earth handcart, the little bus of this locking is that locked loop is powered, such that it is able to omit weight motor type relay, simplify exclusive circuit, and improve safety.
Preferably, this PT cabinet earth handcart exclusive circuit is used for high-tension switch cabinet, is particularly suited for the transformer station arranged for indoor switch cabinet.
Preferably, the little bus of locking is 2, is arranged at the cabinet top of PT cabinet.
Preferably, control little bus and be placed in the cabinet top of PT cabinet.
Preferably, described auxiliary contact are 4.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or variation still in the protection domain of the invention among.
Claims (5)
1. a PT cabinet earth handcart exclusive circuit, it is characterised in that including:
Multiple auxiliary contact of earth handcart, the plurality of auxiliary contact are respectively electrically connected to control little mother
Line and the little bus of locking, the little bus of described locking is electrically connected to locked loop.
PT cabinet earth handcart exclusive circuit the most according to claim 1, it is characterised in that described
The little bus of locking is 2.
PT cabinet earth handcart exclusive circuit the most according to claim 1, it is characterised in that described
The little bus of locking is placed in the cabinet top of described PT cabinet.
PT cabinet earth handcart exclusive circuit the most according to claim 1, it is characterised in that described
Control little bus and be placed in the cabinet top of described PT cabinet.
PT cabinet earth handcart exclusive circuit the most according to claim 1, it is characterised in that described
Auxiliary contact are 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415860.0A CN105958359A (en) | 2016-06-14 | 2016-06-14 | Lockout circuit for PT cabinet grounding handcart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415860.0A CN105958359A (en) | 2016-06-14 | 2016-06-14 | Lockout circuit for PT cabinet grounding handcart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105958359A true CN105958359A (en) | 2016-09-21 |
Family
ID=56905433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610415860.0A Pending CN105958359A (en) | 2016-06-14 | 2016-06-14 | Lockout circuit for PT cabinet grounding handcart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105958359A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746297A (en) * | 2014-01-10 | 2014-04-23 | 中山市明阳电器有限公司 | Bus grounding handcart and wire inlet and outlet handcart locking loop |
| CN205070273U (en) * | 2015-11-10 | 2016-03-02 | 青岛鲁能恒源高新电气有限公司 | Grounding handcart of electric shutting |
| CN205911656U (en) * | 2016-06-14 | 2017-01-25 | 国网山东省电力公司青岛供电公司 | PT cabinet grounding handcart locking circuit |
-
2016
- 2016-06-14 CN CN201610415860.0A patent/CN105958359A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746297A (en) * | 2014-01-10 | 2014-04-23 | 中山市明阳电器有限公司 | Bus grounding handcart and wire inlet and outlet handcart locking loop |
| CN205070273U (en) * | 2015-11-10 | 2016-03-02 | 青岛鲁能恒源高新电气有限公司 | Grounding handcart of electric shutting |
| CN205911656U (en) * | 2016-06-14 | 2017-01-25 | 国网山东省电力公司青岛供电公司 | PT cabinet grounding handcart locking circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |