CN203535152U - Recessive defect detecting device for external starting contacts of failure protection equipment - Google Patents
Recessive defect detecting device for external starting contacts of failure protection equipment Download PDFInfo
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- CN203535152U CN203535152U CN201320417781.5U CN201320417781U CN203535152U CN 203535152 U CN203535152 U CN 203535152U CN 201320417781 U CN201320417781 U CN 201320417781U CN 203535152 U CN203535152 U CN 203535152U
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- contact
- failure protection
- outside
- detecting device
- recessive defect
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Abstract
The utility model discloses a recessive defect detecting device for the external starting contacts of failure protection equipment, which is characterized by comprising a plurality of groups of junction points used for being connected with the external starting contacts of failure protection equipment, indicating modules arranged between every two groups of junction points and used for indicating whether a recessive defect exists between the two groups of junction points or not, a power supply module used for supplying power to the indicating module, and a power supply switch used for controlling the operation of the power supply module. According to the technical scheme of the utility model, by means of the recessive defect detecting device for the external starting contacts of failure protection equipment, whether the recessive defect of the external starting contacts exists or not can be detected. If a recessive defect is detected, the device immediately displays an alarm to inform operating personnel to check the external starting contacts. Therefore, the recessive defect of the external starting contacts of failure protection equipment can be timely eliminated and the occurrence of power grid accidents is avoided.
Description
Technical field
The utility model relates to field of power, particularly relates to the outside recessive defect detecting device of contact that starts of a kind of failure protection.
Background technology
It is large that transmission line of electricity more than 220kV has transmission power, the feature that fed distance is far away.For improving the transport capacity of this type of transmission line of electricity and the stability of system, often adopt phase-splitting isolating switch and protection fast.But isolating switch exists the malfunctioning possibility of operation, may cause transmission line of electricity to break down and to electrical network, bring very large threat during isolating switch tripping.So should install circuit-breaker failure portection equipment; this based Cb Failure Protection can disconnect the isolating switch of isolating switch place (connection) bus of malfunctioning tripping selectively, to reduce the security and stability of the damage to equipment, the scope of dwindling power failure, raising system.
But in the prior art, based Cb Failure Protection must have correct triggering intake (trigger condition) before action.In current transformer station, the startup of based Cb Failure Protection triggers intake and realizes by external contact.Generally by the mode of " differentiate+malfunctioning interval protection outlet+malfunctioning interval voltage double-throw contact of the malfunctioning spacing current overcurrent protection " formation that is in series " with door "; or the mode of " three-phase at three-phase current overcurrent protection differentiation+malfunctioning interval is jumper connection point+malfunctioning interval voltage double-throw contact forever " formation that is in series " with door "; as shown in Figure 1, for open into contact schematic diagram based Cb Failure Protection outside in prior art.
Open into contact based Cb Failure Protection outside shown in Fig. 1 is the protective device at malfunctioning interval, overflow means, between voltage switching device, with wire, be connected to each other, but between contact without any monitoring means, during just with protection examination or regular inspection, check, and there is no at present a concrete detection method yet, as long as damaging, the contact of one of them link just may cause whole loop incorrect operation, final based Cb Failure Protection can not start according to correct way, form " recessive defect ", the possibility of result is tripping or the malfunction of based Cb Failure Protection and corresponding isolating switch, to the serious potential safety hazard of electrical network band.
" recessive defect " refers to when system is normally moved it is defect hidden, that hide in equipment; under conventional regular inspection means or running status, be difficult to find; once service condition changes, when recessive defect is triggered, may cause switch and protection incorrect operation etc.
Once there are in recent years a lot of protective devices due to malfunctioning interval and can not start the case that causes power grid accident event according to correct way.As on April 18th, 2010; certain electrical network 220kV transformer station is due to the correct tripping operation of certain 220kV line segregation protection; because open into contact access mistake the outside of the based Cb Failure Protection at this interval; while causing fault, based Cb Failure Protection starts; tripping 220kV line segregation is with other interval isolating switch of bar bus, 4 substation power loss.These cases also illustrate, open into contact the outside of based Cb Failure Protection, and whether complete function correctly drops into and detect is a very urgent task.
Utility model content
For solving the aforementioned problems in the prior to the serious potential safety hazard of electrical network band; the utility model provides a kind of failure protection the outside recessive defect detecting device of contact that starts; whether can detect the outside contact that starts of failure protection exists recessive defect to detect; if find to exist recessive defect; this device just carries out display alarm immediately; notify operations staff to check, the outside recessive defect of contact that starts of failure protection is eliminated in time, avoid power grid accident.
The outside recessive defect detecting device of contact that starts of failure protection that the utility model provides comprises:
The tie point of many groups for being connected with the outside startup of based Cb Failure Protection contact;
Be arranged between two groups of tie points, for showing the indicating module that whether has recessive defect between described two groups of tie points;
Be used to the power module of described indicating module power supply; And the power switch of controlling described power module work.
Wherein, the outside recessive defect detecting device of contact that starts of described failure protection has four groups of tie points, and every group of tie point is comprised of two connecting holes.
Wherein, the outside recessive defect detecting device of contact that starts of described failure protection has three indicating modules, is connected on respectively between described four groups of tie points.
Wherein, described indicating module is light emitting diode.
Wherein, described indicating module is electrically connected to the connecting hole of corresponding tie point by wire.
Wherein, the direct supply that described power module is 9～18V.
Wherein, described four groups of tie points, three indicating modules, power module and power switches form series loop jointly.
Wherein, described indicating module, power module and power switch are all positioned at the outside inside that starts the recessive defect detecting device of contact of described failure protection.
The outside recessive defect detecting device of contact that starts of failure protection that the utility model provides; whether can detect the outside contact that starts of failure protection exists recessive defect to detect; if find to exist recessive defect; this device just carries out display alarm immediately; notify operations staff to check; the outside recessive defect of contact that starts of failure protection is eliminated in time, avoided power grid accident.
Accompanying drawing explanation
Fig. 1 is that in prior art, open into contact schematic diagram based Cb Failure Protection outside;
Outside recessive defect detecting device the first example structure schematic diagram of contact that starts of failure protection that Fig. 2 provides for the utility model;
Outside recessive defect detecting device the second example structure schematic diagram of contact that starts of failure protection that Fig. 3 provides for the utility model.
Embodiment
The outside recessive defect detecting device of contact that starts of failure protection that the utility model provides; whether can detect the outside contact that starts of failure protection exists recessive defect to detect; if find to exist recessive defect; this device just carries out display alarm immediately; notify operations staff to check; the outside recessive defect of contact that starts of failure protection is eliminated in time, avoided power grid accident.
Referring to Fig. 2, the failure protection outside providing for the utility model starts recessive defect detecting device the first example structure schematic diagram of contact; This device as shown in the figure, comprising:
Many groups are for outside to start shown in tie point 11,12,13 that contact is connected, 14(figure be 4 groups with based Cb Failure Protection);
Be arranged at (between tie point 11,12, between tie point 12,13, between tie point 13,14) between two groups of tie points, for showing the indicating module 21,22 and 23 that whether has recessive defect between described two groups of tie points.It will be appreciated by persons skilled in the art that because indicating module is arranged between two groups of tie points, so the quantity of indicating module is than the group number of tie point few 1.
Be used to the power module 31 of described indicating module power supply 21,22 and 23; And the power switch 32 of controlling described power module 31 work.
Further, refer to Fig. 3, the failure protection outside providing for the utility model starts recessive defect detecting device the second example structure schematic diagram of contact.In the present embodiment, by outside structure and the principle of work that starts the recessive defect detecting device of contact of this failure protection of more detailed description.
As shown in Figure 3, the outside recessive defect detecting device of contact that starts of this failure protection, comprising:
Many group tie points, for being connected with the outside contact that starts of based Cb Failure Protection.In the present embodiment, the outside recessive defect detecting device of contact that starts of described failure protection has four groups of tie points, and every group of tie point is comprised of two connecting holes, and four groups of tie points are totally eight connecting holes.Shown in figure, be a, b, c, d, e, f, g, eight connecting holes of h.
Indicating module, is arranged between two groups of tie points, for showing between described two groups of tie points whether have recessive defect.More specifically, in the present embodiment, the outside recessive defect detecting device of contact that starts of described failure protection has three indicating modules, is connected on respectively between described four groups of tie points.Preferably, described indicating module is light emitting diode, is light emitting diode 1,2,3 shown in figure.Light emitting diode wire is electrically connected to the connecting hole of corresponding tie point.
Power switch, the power module that is used to described indicating module to power; More specifically, the electric battery that described power module is 9～18V.Meanwhile, controlling in addition the power switch of described power module work in this device, is K switch shown in figure.
Described four groups of tie points, three indicating modules, power module and power switches form series loop jointly.And described indicating module, power module and power switch are all positioned at the outside inside that starts the recessive defect detecting device of contact of described failure protection.Certainly, indicating module and power switch have part to be exposed to the outside surface that starts the recessive defect detecting device of contact of this failure protection, are convenient to observe and control.
Below, two the concrete testing processes of take are example, set forth the outside principle of work that starts the recessive defect detecting device of contact of failure protection that the utility model provides.
Application case 1:(only checks the LJA contact of the overcurrent protection in Fig. 1)
The 1st step: when protection detects that based Cb Failure Protection is outside starts contact in regular inspection, the protection screen terminal row place end at Zhe interval, 01,024,025 3 loop in Fig. 1 is left, and bandage with insulating tape, record checks out after finishing and recovers until device.
The 2nd step: two sections of the LJA contacts that the connecting hole a that the device that the utility model provides is connected with the outside startup of based Cb Failure Protection contact and b receive the overcurrent protection in Fig. 1; then by c and h two short circuits; after connecting like this by the LJA contact string of overcurrent protection in device of the present utility model, form loop.
The 3rd step: the K switch of installing inner power module is closed.
The 4th step: according to protection setting valve, the starting protection of the LJA contact of the overcurrent protection in Fig. 1 is moved in protection regular inspection; the LJA junction closure of the overcurrent protection after protection action in Fig. 1; in the loop that the 2nd step forms, light emitting diode 1 is activated and lights; illustrate that this loop is correct; if can not start at will and light according to protection setting valve, think that the LJA contact of this overcurrent protection has problem, there is recessive defect; need maintenance in time, eliminate recessive defect.
Application case 2:(only checks the integrality of the LJA contact of the overcurrent protection in Fig. 1 and the TJA contact series loop of protection 1)
The 1st step: when protection detects that based Cb Failure Protection is outside starts contact in regular inspection, the protection screen terminal row place end at Zhe interval, 01,024,025 3 loop in Fig. 1 is left, and bandage with insulating tape, record checks out after finishing and recovers until device.
The 2nd step: the device that the utility model provides is received the LJA contact of the overcurrent protection in Fig. 1 with connecting hole a and b that the outside startup of based Cb Failure Protection contact is connected; two sections, the TJA contact loop of c and d and protection 1; then by e and h two short circuits; after connecting like this, the TJA contact loop of the LJA contact of overcurrent protection and protection 1 is gone here and there in device of the present invention, form series loop with optical diode 1 and optical diode 2.
The 3rd step: the K switch of installing inner power module is closed.
The 4th step: in protection regular inspection, according to protection setting valve, the starting protection of the LJA contact of the overcurrent protection in Fig. 1 is moved, the LJA junction closure of the overcurrent protection after protection action in Fig. 1, in the loop that the 2nd step forms, light emitting diode 1 is activated and lights; In protection regular inspection, according to protection setting valve, the starting protection of the TJA contact of the protection in Fig. 11 is moved, the TJA junction closure of the protection 1 after protection action in Fig. 1, in the loop that the 2nd step forms, light emitting diode 2 is activated and lights.Illustrate that this loop is correct, if one of them link can not start at will and light according to protection setting valve, think that the LJA contact of this link overcurrent protection or the TJA contact of protection 1 have problem, have recessive defect, need to overhaul in time, eliminate recessive defect.
The outside recessive defect detecting device of contact that starts of failure protection that the utility model provides; whether can detect the outside contact that starts of failure protection exists recessive defect to detect; if find to exist recessive defect; this device just carries out display alarm immediately; notify operations staff to check; the outside recessive defect of contact that starts of failure protection is eliminated in time, avoided power grid accident.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (8)
1. the outside recessive defect detecting device of contact that starts of failure protection, is characterized in that, comprising:
The tie point of many groups for being connected with the outside startup of based Cb Failure Protection contact;
Be arranged between two groups of tie points, for showing the indicating module that whether has recessive defect between described two groups of tie points;
Be used to the power module of described indicating module power supply; And the power switch of controlling described power module work.
2. the outside recessive defect detecting device of contact that starts of failure protection as claimed in claim 1, is characterized in that, the outside recessive defect detecting device of contact that starts of described failure protection has four groups of tie points, and every group of tie point is comprised of two connecting holes.
3. the outside recessive defect detecting device of contact that starts of failure protection as claimed in claim 2, is characterized in that, the outside recessive defect detecting device of contact that starts of described failure protection has three indicating modules, is connected on respectively between described four groups of tie points.
4. the outside recessive defect detecting device of contact that starts of failure protection as claimed in claim 3, is characterized in that, described indicating module is light emitting diode.
5. the outside recessive defect detecting device of contact that starts of failure protection as claimed in claim 3, is characterized in that, described indicating module is electrically connected to the connecting hole of corresponding tie point by wire.
6. the outside recessive defect detecting device of contact that starts of failure protection as claimed in claim 1, is characterized in that the direct supply that described power module is 9～18V.
7. the outside recessive defect detecting device of contact that starts of the failure protection as described in any one in claim 2 to 5, is characterized in that, described four groups of tie points, three indicating modules, power module and power switches form series loop jointly.
8. the outside recessive defect detecting device of contact that starts of failure protection as claimed in claim 7, is characterized in that, described indicating module, power module and power switch are all positioned at the outside inside that starts the recessive defect detecting device of contact of described failure protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320417781.5U CN203535152U (en) | 2013-07-15 | 2013-07-15 | Recessive defect detecting device for external starting contacts of failure protection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320417781.5U CN203535152U (en) | 2013-07-15 | 2013-07-15 | Recessive defect detecting device for external starting contacts of failure protection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203535152U true CN203535152U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320417781.5U Expired - Lifetime CN203535152U (en) | 2013-07-15 | 2013-07-15 | Recessive defect detecting device for external starting contacts of failure protection equipment |
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| CN (1) | CN203535152U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353672A (en) * | 2016-08-19 | 2017-01-25 | 苏州宝化炭黑有限公司 | Judging device for switch malfunction of operating post |
| CN106597208A (en) * | 2017-01-24 | 2017-04-26 | 国网河南省电力公司安阳供电公司 | Breaker failure start loop detection device and method |
| CN106961760A (en) * | 2015-10-14 | 2017-07-18 | 大陆汽车有限公司 | Method and circuit arrangement for the failure that detects at least one light emitting diode in light emitting diode device |
| CN107290570A (en) * | 2017-07-28 | 2017-10-24 | 广东电网有限责任公司揭阳供电局 | A kind of failure protection calibrating terminal |
| CN107300630A (en) * | 2017-07-28 | 2017-10-27 | 广东电网有限责任公司揭阳供电局 | A kind of new failure protection calibrating terminal |
-
2013
- 2013-07-15 CN CN201320417781.5U patent/CN203535152U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961760A (en) * | 2015-10-14 | 2017-07-18 | 大陆汽车有限公司 | Method and circuit arrangement for the failure that detects at least one light emitting diode in light emitting diode device |
| CN106961760B (en) * | 2015-10-14 | 2018-12-14 | 大陆汽车有限公司 | For detecting the method and circuit device of the failure of at least one light emitting diode |
| CN106353672A (en) * | 2016-08-19 | 2017-01-25 | 苏州宝化炭黑有限公司 | Judging device for switch malfunction of operating post |
| CN106353672B (en) * | 2016-08-19 | 2024-02-27 | 苏州宝化炭黑有限公司 | Operation column switch failure judgment device |
| CN106597208A (en) * | 2017-01-24 | 2017-04-26 | 国网河南省电力公司安阳供电公司 | Breaker failure start loop detection device and method |
| CN107290570A (en) * | 2017-07-28 | 2017-10-24 | 广东电网有限责任公司揭阳供电局 | A kind of failure protection calibrating terminal |
| CN107300630A (en) * | 2017-07-28 | 2017-10-27 | 广东电网有限责任公司揭阳供电局 | A kind of new failure protection calibrating terminal |
| CN107290570B (en) * | 2017-07-28 | 2023-03-24 | 广东电网有限责任公司揭阳供电局 | Failure protection test terminal |
| CN107300630B (en) * | 2017-07-28 | 2023-03-24 | 广东电网有限责任公司揭阳供电局 | Failure protection test terminal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |