CN206353193U - The portable detector of disconnecting switch "on" position during hot bus - Google Patents
The portable detector of disconnecting switch "on" position during hot bus Download PDFInfo
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- CN206353193U CN206353193U CN201621091514.3U CN201621091514U CN206353193U CN 206353193 U CN206353193 U CN 206353193U CN 201621091514 U CN201621091514 U CN 201621091514U CN 206353193 U CN206353193 U CN 206353193U
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- disconnecting switch
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- 238000001514 detection method Methods 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract description 3
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- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010000370 Accident at home Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 238000000205 computational method Methods 0.000 description 1
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Abstract
The utility model discloses it is a kind of be used for detect heat fall bus during disconnecting switch "on" position portable detector, its structure is popped one's head in by a pair of flexible currents, data collecting card, three modules of handheld computer are constituted, the output of wherein flexible current probe is connected to data collecting card, and the output of data collecting card is connected to handheld computer.Advantage：1）Newly-built transformer station can either be applied to, the technological transformation of old transformer station is can also apply to；2）Be greatly reduced heat fall bus during pulling load electric current accident probability of happening, improve disconnecting switch detection technical merit；3）Portable detector can complete the judgement to "on" position on the premise of GIS is not invaded, and critical equipment is provided for safe operation of power system.
Description
Technical field
The invention belongs to power system automation technology field, more particularly to it is a kind of be used to detecting heat fall during bus every
Leave the portable detector for closing "on" position.
Background technology
Gases at high pressure insulated switching installation（Gas Insulated Switchgear, GIS）Including breaker and keeping apart
Close etc., it is one of visual plant in power system, its running status directly affects operation stability and the confession of power system
Electric reliability.Due to the totally-enclosed design of GIS device, operating personnel can not observe directly the state of equipment, only in accordance with auxiliary
The scene of the return signal of contact and operating personnel confirm judge equipment whether opening and closing in place., may after switch tool operation
There is monitoring backstage and scene shows division success, but actual Contact Breaking/Making Operations situation not in place, so as to cause power grid security thing
Part, causes sizable economic loss and serious social influence.
Appoint for example, certain transformer station performs " No. 1 bus of 220kV turns maintenance by operation, and load turns No. 2 bus runs " operation
During business, first " first step closes No. 2 bus bar side disconnecting switch of No. 1 outlet ", but actually this time closes a floodgate not successful,
When carrying out " second step pulls open No. 1 bus bar side disconnecting switch of No. 1 outlet ", bus differential protecting action causes 220kV 1
Number, No. 2 bus loss of pressure, and further result in multiple 220kV transformer stations and 110kV substation power loss, lose great.Such accident
At home and abroad occurred repeatedly, to cause national economy huge economic loss in power network.
Causing the immediate cause of the above-mentioned hot accident of falling bus is：After disconnecting switch is closed a floodgate, monitoring backstage shows disconnecting switch
Position, but not in place, the main conductive circuit access failure of actual contact combined floodgate are being closed, is causing the pulling load electricity in the operation of falling bus
Stream.Equipment disassembling analysis afterwards is found：The disconnecting link subelement corrosion of disconnecting switch, buffering piston bar surface is dry and astringent, has
Exposed parts corrosion has foreign matter under more cut, gate-dividing state, and disconnecting link transmission system resistance in operation is larger, and the above is a variety of to be lacked
Fall into and ultimately caused disconnecting switch combined floodgate without in place.
Above-mentioned accident exposes following serious problems：In most of GIS transformer stations, GIS disconnecting switch divisions state is only
The criterion judgement indirectly such as mechanism case division position instruction, mechanism rod position can be passed through, it is impossible to directly whether in place to confirm contact, can
It is poor by property.For the accurate detection of GIS disconnecting switch "on" positions during raising heat bus, this patent, which proposes one kind, to be used for
The portable detector of disconnecting switch "on" position, can either be applied to newly-built transformer station during the hot bus of detection,
The technological transformation of old transformer station can be applied to.
Utility model content
The purpose of this utility model be to provide it is a kind of be used for detect heat fall bus during disconnecting switch "on" position just
Formula detection means is taken, can complete to sentence disconnecting switch "on" position during heat bus on the premise of GIS is not invaded
It is disconnected, lift safe operation of power system level.
Technical solution of the present utility model：It is a kind of to be used to detecting that heat to fall disconnecting switch "on" position during bus
Portable detector, its structure is popped one's head in by a pair of flexible currents, data collecting card, three modules of handheld computer are constituted,
The output of wherein flexible current probe is connected to data collecting card, and the output of data collecting card is connected to handheld computer.
Advantage of the present utility model：
1）Newly-built transformer station can either be applied to, the technological transformation of old transformer station is can also apply to；
2）Be greatly reduced heat fall bus during pulling load electric current accident probability of happening, improve disconnecting switch detection skill
Art level；
3）Portable detector can complete the judgement to "on" position on the premise of GIS is not invaded, and be power train
Safe operation of uniting provides critical equipment.
Brief description of the drawings
Fig. 1 be for detect heat fall bus during disconnecting switch "on" position portable detector structure chart.
Embodiment
The technical solution of the utility model is described further below in conjunction with the accompanying drawings.
As shown in figure 1, it is a kind of be used for detect heat fall bus during disconnecting switch "on" position portable detector,
Its structure is popped one's head in by a pair of flexible currents, data collecting card, three modules of handheld computer are constituted, and wherein flexible current is popped one's head in
Output be connected to data collecting card, the output of data collecting card is connected to handheld computer.
Described a pair of flexible currents probe, is No. 1 flexible current probe and No. 2 flexible current probes respectively；It is soft by No. 1
Property current probe be sleeved on double female outlets No. 1 disconnecting switch GIS jacket exteriors, by No. 2 flexible current probe sheaths mounted in double
The GIS jacket exteriors of No. 2 disconnecting switch of female outlet.
Judge data provided with "on" position in described handheld computer, described judgement data include No. 1 flexible electrical
Flow probe measurement to the current effective value for flowing through No. 1 disconnecting switchI 1, and No. 2 flexible current probe measurements to flow through No. 2
The current effective value of disconnecting switch isI 2, and calculate transfer current ratiokFormula：k=I 2/(I 1+I 2)。
Workflow：In order to detect disconnecting switch "on" position during hot bus, No. 1 flexible current probe is set with
In No. 1 disconnecting switch position of double female outlets, the GIS jacket exteriors of No. 1 disconnecting switch position are specifically sleeved on, what it was measured
The current effective value for flowing through No. 1 disconnecting switch isI 1；By No. 2 flexible current probe sheaths mounted in pair No. 2 disconnecting switch of female outlets
Position, is specifically sleeved on the GIS jacket exteriors of No. 2 disconnecting switch positions, and the electric current that what it was measured flow through No. 2 disconnecting switch has
Valid value isI 2.The output of flexible current probe is connected to data collecting card, and data collecting card collection flexible current probe exports and will
Data transfer is to handheld computer, wherein No. 1 collection of the output signal access data collecting card of No. 1 flexible current probe is logical
Road, the output signal of No. 2 flexible current probes accesses No. 2 acquisition channels of data collecting card.Finally utilize handheld computer
"on" position criterion is embedded with, the judgement to "on" position is completed.Output valve according to flexible probe calculates transfer current ratiok
=I 2/(I 1+I 2), ifk<5% ork>95%, then export "on" position abnormal prompt.
Flexible current probe can use the flexible probe of Germany's DK-1400 models, and specific performance parameter is as shown in table 1.Number
According to capture card using No. NI-US2 6009 models；Handheld computer can use common removable computer.
The flexible current of table 1 is popped one's head in and its parameter
Transfer current ratiokThe formulation of criterion：According to bibliography（Disconnecting switch opening-closing bus turns in the GIS of Li Guang mountains
Change analysis [J] High-Voltage Electrical Appliances of current capacity, 2002,01:57-59.）Bus switching current computational methods, with reference to modeling
Calculate, heat falls opening-closing bus switching current during bus and accounts for the ratio of outlet total current and substantially meet between 10% ~ 90%.Cause
This, the closing criterion embedded in the handheld computer is adjusted as 0.05 ~ 0.95.Ifk<5% ork>95%, then output is closed
Lock abnormal state is pointed out.Otherwise, it is believed that "on" position is good.
Claims (3)
1. it is a kind of be used for detect heat fall bus during disconnecting switch "on" position portable detector, it is characterised in that：
It is made up of a pair of flexible current probes, data collecting card, three modules of handheld computer, wherein the output of flexible current probe
Data collecting card is connected to, the output of data collecting card is connected to handheld computer.
2. it is according to claim 1 be used for detect heat fall bus during disconnecting switch "on" position portable inspectiont dress
Put, it is characterised in that：Described a pair of flexible currents probe, is No. 1 flexible current probe and No. 2 flexible current probes respectively；
Wherein No. 1 flexible current probe sheath is mounted in the GIS jacket exteriors of No. 1 disconnecting switch of double female outlets, No. 2 flexible current probe sheaths
Mounted in the GIS jacket exteriors of No. 2 disconnecting switch of double female outlets.
3. it is according to claim 1 be used for detect heat fall bus during disconnecting switch "on" position portable inspectiont dress
Put, it is characterised in that：Judge data provided with "on" position in described handheld computer, described judgement data include No. 1
Flexible current probe measurement to the current effective value for flowing through No. 1 disconnecting switchI 1, and the stream that No. 2 flexible current probe measurements are arrived
The current effective value for crossing No. 2 disconnecting switch isI 2, and calculate transfer current ratiokFormula：k=I 2/(I 1+I 2)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091514.3U CN206353193U (en) | 2016-09-29 | 2016-09-29 | The portable detector of disconnecting switch "on" position during hot bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091514.3U CN206353193U (en) | 2016-09-29 | 2016-09-29 | The portable detector of disconnecting switch "on" position during hot bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206353193U true CN206353193U (en) | 2017-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621091514.3U Active CN206353193U (en) | 2016-09-29 | 2016-09-29 | The portable detector of disconnecting switch "on" position during hot bus |
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| Country | Link |
|---|---|
| CN (1) | CN206353193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596903A (en) * | 2018-12-07 | 2019-04-09 | 国网安徽省电力有限公司黄山供电公司 | It is a kind of fall bus during three-phase disconnecting link position method of discrimination |
| CN113295992A (en) * | 2021-05-13 | 2021-08-24 | 深圳供电局有限公司 | Method for verifying latching logic relationship of isolating switch |
-
2016
- 2016-09-29 CN CN201621091514.3U patent/CN206353193U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596903A (en) * | 2018-12-07 | 2019-04-09 | 国网安徽省电力有限公司黄山供电公司 | It is a kind of fall bus during three-phase disconnecting link position method of discrimination |
| CN113295992A (en) * | 2021-05-13 | 2021-08-24 | 深圳供电局有限公司 | Method for verifying latching logic relationship of isolating switch |
| CN113295992B (en) * | 2021-05-13 | 2023-12-15 | 深圳供电局有限公司 | Method for verifying locking logic relationship of isolating switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200424 Address after: Guangzhou Yuexiu District City, Guangdong province 510060 Dongfeng Road No. 757 Co-patentee after: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd Patentee after: GUANGDONG POWER GRID Co.,Ltd. Address before: 523008 No. 239 Dongcheng Road, Dongguan, Guangdong, Dongcheng District Co-patentee before: NANJING SOFTCORE SCIENCE & TECHNOLOGY Co.,Ltd. Patentee before: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd |
|
| TR01 | Transfer of patent right |