CN208239500U - A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems - Google Patents
A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems Download PDFInfo
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- CN208239500U CN208239500U CN201820946746.5U CN201820946746U CN208239500U CN 208239500 U CN208239500 U CN 208239500U CN 201820946746 U CN201820946746 U CN 201820946746U CN 208239500 U CN208239500 U CN 208239500U
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- 230000006837 decompression Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
Specially become client the utility model discloses a kind of solution not powering the devices of low pressure ammeter acquisition problems comprising: three external interfaces, respectively the first input interface, the second input interface and output interface；First input interface is connected with high-voltage metering cubicle PT secondary terminals；Second input interface is connected with low-pressure side bus row；The output interface is connected with low pressure ammeter；It further include decompression rectifier filter circuit, phase three-wire three three-phase and four-line conversion circuit, contactor interlocking switching circuit；Specially become the low pressure ammeter acquisition problems that client does not power to solve electricity consumption, purpose is the information monitoring ability for realizing that raising power information acquisition success rate promotes, is more accurate to low pressure ammeter control whether working properly, improving low-voltage circuit, reduces the promotion of Field Force's tour, maintenance workload etc..
Description
Technical field:
The utility model relates to smart grid field, specifically a kind of solution electricity consumption specially becomes the low pressure ammeter that client does not power
The device for intelligently switching and its safety control strategy of acquisition problems.
Background technique:
With the iterative method of China's electric network reconstruction.Power infrastructures have been obtained rapidly developing and improved, and smart grid obtains
The universal of high degree is arrived.Intelligent electric meter got in touch with by the computer of communication network and control centre, realize to electricity from
It moves, concentrates, periodically makes a copy of, and carry out statistics and analysis.Intelligent electric meter is the basis of centralized automatic meter-reading, and concentrator is centralized automatic meter-reading system
Key equipment in system.
The low pressure ammeter some for specially becoming client does not come into operation, and the low pressure ammeter of no-voltage supply can not be obtained with concentrator
It writes to each other, so that its information can not obtain effective acquisition.By the research to low pressure ammeter auxiliary power supply application technology,
Realize that improving power information acquisition success rate is promoted, is more accurate to low pressure ammeter control whether working properly, improving low-voltage line
The information monitoring ability on road reduces the promotion of Field Force's tour, maintenance workload etc..
Utility model content:
To overcome the shortcomings of existing technologies, auxiliary the purpose of this utility model is to provide indirect access type low pressure ammeter is provided
Supply intelligent switching device is helped, specially becomes the low pressure ammeter acquisition problems that client does not power to solve electricity consumption, it is therefore intended that is realized
Power information acquisition success rate is improved to be promoted, is more accurate to low pressure ammeter control whether working properly, improving low-voltage circuit
Information monitoring ability reduces the promotion of Field Force's tour, maintenance workload etc..
The utility model solves technical problem and adopts the following technical scheme that
A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems, and described device includes:
Three external interfaces, respectively the first input interface, the second input interface and output interface；
First input interface is connected with high-voltage metering cubicle PT secondary terminals；Second input interface and low-pressure side bus
Row is connected；The output interface is connected with low pressure ammeter；
It further include decompression rectifier filter circuit, phase three-wire three three-phase and four-line conversion circuit, contactor interlocking switching circuit；
The decompression rectifier filter circuit specific structure: the input of three-phase and four-line electric main, four lines are connected to power frequency transformation
Device T4 T5 T6 ac input end；Transformer T4 T5 T6 ac output end be connected to rectifier bridge B4 B5 B6 ac input end；It is whole
Stream bridge B4 B5 B6 DC output end be connected to capacitor C3, C4, provide working power for contactor；
The phase three-wire three three-phase and four-line conversion circuit specific structure: phase three-wire three 100V exchange input access contactor K1
Normally-closed contact；The normally-closed contact of access contactor K1 connects fuse；Fuse connects phase three-wire three and turns three-phase and four-line boosting transformation
Device；The three-phase and four-line 220V of transformer output connects K2 normally-closed contact；It is defeated after K2 normally-closed contact connects RT1, RT2, RT3 thermistor
Low pressure ammeter is arrived out.
The contactor interlocking switching circuit: normal low tension meter amount three-phase and four-line and auxiliary are realized using contactor
The switching of power supply three-phase and four-line duplex feeding power supply.
It solves specially to become client using above-mentioned apparatus not powering the methods of low pressure ammeter acquisition problems, its step are as follows:
First input interface of described device is connected with high-voltage metering cubicle PT secondary terminals；Second input interface and low-pressure side
Bus bar is connected；The output interface is connected with low pressure ammeter；
When low-voltage circuit does not come into operation, metering three-phase and four-line no-voltage, decompression rectifier filter circuit is without electricity at this time
Pressure, the release of the contact contactor K1, K2, contactor K3 line packet is without electricity, the release of the contact K3, the power supply of three-phase and four-line metering circuit and low pressure
Ammeter disconnects, and PT phase three-wire three 100V is exchanged and accessed by K1 normally-closed contact, passes through phase three-wire three three-phase and four-line conversion circuit and K2
Normally-closed contact is linked into low pressure ammeter, maintains the work of low pressure ammeter, keeps the communication of device in low pressure ammeter sum aggregate normal；
When low-voltage circuit comes into operation, metering three-phase and four-line has voltage, and decompression rectifier filter circuit has voltage at this time,
Contactor K1, K2 line Bao get electricity, normally-closed contact release, K1 normally-closed contact disconnect PT phase three-wire three 100V exchange access, and K2 is normally closed
Contact disconnects low pressure ammeter auxiliary power supply, and K1 normally opened contact is attracted, and the contactor K3 line contact Bao get electricity, K3 is attracted, three-phase and four-line
Metering circuit power supply connects the work of low pressure ammeter with low pressure ammeter, and starts normal gage work state.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1. the decompression rectifier filter circuit of design can guarantee that the risk situations such as phase shortage, scarce zero curve occur when low-voltage circuit
When, device being capable of normal reliable work.As long as any two line of three-phase and four-line circuit has electricity, work can be provided for contactor line packet
Power supply enables circuit to act, and avoids occurring working side by side.High reliablity.
2. contactor interlocking switching circuit designs reasonable control strategy, so that contactor logical interlock, fundamentally shuts out
A possibility that phase three-wire three power supply and three-phase four-wire power work side by side absolutely.
Phase three-wire three three-phase and four-line conversion circuit: the 100V phase three-wire three drawn from high-voltage metering cubicle PT passes through transformer
It is converted to 220V three-phase and four-line and provides accessory power supply to low pressure ammeter, auxiliary power supply makes when not coming into operation for low pressure ammeter
With.After accessing auxiliary power supply, low pressure ammeter can keep the communication with concentrator, avoid low pressure ammeter information collection from failing, shadow
It rings power supply company's low pressure ammeter and acquires success rate index.And the information of available low pressure ammeter operation, in order to avoid low pressure ammeter
Failure or other abnormal conditions cannot report in time.
Detailed description of the invention:
Fig. 1 is circuit diagram involved in utility model device；Fig. 2 is for three interfaces of utility model device and outside
Portion's device connection structure diagram；Fig. 3 is the circuit system connection figure of utility model device.
Below by way of specific embodiment, and in conjunction with attached drawing, the utility model is described in further detail.
Specific embodiment:
Embodiment: as shown in Figure 1, Figure 3, the utility model solves specially to become client and does not power the dresses of low-pressure meter acquisition problems
It sets, including decompression rectifier filter circuit, phase three-wire three three-phase and four-line conversion circuit, contactor interlocking switching circuit；Step-down rectifier
Filter circuit specific structure: three-phase and four-line electric main input, four lines be connected to Industrial Frequency Transformer T4 T5 T6 ac input end；
Transformer T4 T5 T6 ac output end be connected to rectifier bridge B4 B5 B6 ac input end；Rectifier bridge B4 B5 B6 DC output end
It is connected to capacitor C3, C4, provides working power for contactor；Phase three-wire three three-phase and four-line conversion circuit specific structure: three-phase three
The normally-closed contact of line 100V exchange input access contactor K1；The normally-closed contact of access contactor K1 connects fuse；Fuse connects
Phase three-wire three turns three-phase and four-line step-up transformer；The three-phase and four-line 220V of transformer output connects K2 normally-closed contact；K2 normally-closed contact
After connecing RT1, RT2, RT3 thermistor, it is output to low pressure ammeter.Contactor interlocking switching circuit: it is realized using contactor normal
The switching of low tension meter amount three-phase and four-line and auxiliary power supply three-phase and four-line duplex feeding power supply.
As shown in Fig. 2, device includes three external interfaces, respectively the first input interface, the second input interface and output
Interface；First input interface is connected with high-voltage metering cubicle PT secondary terminals；Second input interface is connected with low-pressure side bus row；
The output interface is connected with low pressure ammeter；
The production of utility model device, element use simple, low in cost, high reliablity.
It solves specially to become client using utility model device not powering the methods of low pressure ammeter acquisition problems, step is such as
Under:
First input interface of device is connected with high-voltage metering cubicle PT secondary terminals；Second input interface and low-pressure side bus
Row is connected；Output interface is connected with low pressure ammeter；
When low-voltage circuit does not come into operation, metering three-phase and four-line no-voltage, decompression rectifier filter circuit is without electricity at this time
Pressure, the release of the contact contactor K1, K2, contactor K3 line packet is without electricity, the release of the contact K3, the power supply of three-phase and four-line metering circuit and low pressure
Ammeter disconnects, and PT phase three-wire three 100V is exchanged and accessed by K1 normally-closed contact, passes through phase three-wire three three-phase and four-line conversion circuit and K2
Normally-closed contact is linked into low pressure ammeter, maintains the work of low pressure ammeter, keeps the communication of device in low pressure ammeter sum aggregate normal；
When low-voltage circuit comes into operation, metering three-phase and four-line has voltage, and decompression rectifier filter circuit has voltage at this time,
Contactor K1, K2 line Bao get electricity, normally-closed contact release, K1 normally-closed contact disconnect PT phase three-wire three 100V exchange access, and K2 is normally closed
Contact disconnects low pressure ammeter auxiliary power supply, and K1 normally opened contact is attracted, and the contactor K3 line contact Bao get electricity, K3 is attracted, three-phase and four-line
Metering circuit power supply connects the work of low pressure ammeter with low pressure ammeter, and starts normal gage work state；
Principle: by relay logic, realizing the switching of phase three-wire three auxiliary power supply and metered voltage, avoids that voltage occurs
Paired running risk.
Above-described the utility model embodiment, does not constitute the restriction to scope of protection of the utility model.It is any
Modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc., should be included in the utility model
Claims within.
Claims (1)
- It does not power the devices of low pressure ammeter acquisition problems 1. a kind of solution specially becomes client, it is characterised in that described device includes:Three external interfaces, respectively the first input interface, the second input interface and output interface；First input interface is connected with high-voltage metering cubicle PT secondary terminals；Second input interface arranges phase with low-pressure side bus Even；The output interface is connected with low pressure ammeter；It further include decompression rectifier filter circuit, phase three-wire three three-phase and four-line conversion circuit, contactor interlocking switching circuit；The decompression rectifier filter circuit specific structure: three-phase and four-line electric main input, four lines be connected to Industrial Frequency Transformer T4 T5 T6 ac input end；Transformer T4 T5 T6 ac output end be connected to rectifier bridge B4 B5 B6 ac input end；Rectifier bridge B4 B5 B6 DC output end be connected to capacitor C3, C4, provide working power for contactor；The phase three-wire three three-phase and four-line conversion circuit specific structure: phase three-wire three 100V exchange input access contactor K1's is normal Closed contact；The normally-closed contact of access contactor K1 connects fuse；Fuse connects phase three-wire three and turns three-phase and four-line step-up transformer；Become The three-phase and four-line 220V of depressor output connects K2 normally-closed contact；After K2 normally-closed contact connects RT1, RT2, RT3 thermistor, it is output to low Piezoelectricity table；The contactor interlocking switching circuit: normal low tension meter amount three-phase and four-line and auxiliary power supply are realized using contactor The switching of three-phase and four-line duplex feeding power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820946746.5U CN208239500U (en) | 2018-06-19 | 2018-06-19 | A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820946746.5U CN208239500U (en) | 2018-06-19 | 2018-06-19 | A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems |
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| CN208239500U true CN208239500U (en) | 2018-12-14 |
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| CN201820946746.5U Active CN208239500U (en) | 2018-06-19 | 2018-06-19 | A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535522A (en) * | 2018-06-19 | 2018-09-14 | 国网安徽省电力有限公司滁州供电公司 | A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems |
-
2018
- 2018-06-19 CN CN201820946746.5U patent/CN208239500U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535522A (en) * | 2018-06-19 | 2018-09-14 | 国网安徽省电力有限公司滁州供电公司 | A kind of solution specially becomes client and does not power the devices of low pressure ammeter acquisition problems |
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