CN108233244B - 35kV prepayment metering complete device - Google Patents
35kV prepayment metering complete device Download PDFInfo
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- CN108233244B CN108233244B CN201810105194.XA CN201810105194A CN108233244B CN 108233244 B CN108233244 B CN 108233244B CN 201810105194 A CN201810105194 A CN 201810105194A CN 108233244 B CN108233244 B CN 108233244B
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- chamber
- metering
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- wire inlet
- transformer
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- 238000005192 partition Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/202—Cable lay-outs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
Abstract
The invention relates to a 35kV prepayment metering complete set device which comprises a wire inlet chamber, a mutual inductor chamber, a juxtaposed switch chamber, a metering chamber and a wire outlet chamber which are sequentially arranged in the wire inlet chamber, wherein a wire inlet plug head and a wire inlet sleeve are sequentially arranged in the wire inlet chamber, a current transformer and a voltage transformer are sequentially arranged in the mutual inductor chamber, a cable is connected to a wire inlet end of the wire inlet sleeve through the wire inlet plug head and then is connected to a wire inlet side of the current transformer from a wire outlet end of the wire inlet sleeve, the voltage transformer is directly connected to the wire outlet side of the current transformer in parallel, a ring main unit and an intelligent controller are arranged in the switch chamber, a cable is connected to the wire inlet sleeve of the ring main unit through the wire outlet side of the current transformer, then enters the wire outlet chamber through the wire outlet sleeve of the ring main unit, the intelligent controller and a secondary circuit are arranged in a small box together, and a meter is further arranged in the metering chamber, and the current transformer provides metering current for the meter and a measuring current and a protection current signal for the intelligent controller.
Description
Technical Field
The invention relates to the field of power systems, in particular to a 35kV prepayment metering device.
Background
In the current power supply system, the types of 35kV high-voltage prepayment devices are fewer, the outdoor vacuum circuit breaker on the column is mainly adopted to carry out electric energy prepayment metering by adding a metering device, the mode is generally high in installation height, large in volume, difficult to install and maintain, long in secondary metering line, inaccurate in metering and only applicable to overhead lines.
When adopting cable line, the post is installed and just is clumsy, needs to add cable branch case or switching station and carries out the cable switching, and the high pressure prepayment metering device of installation falls to the ground in the current 35kV circuit has complicated internal structure, and the circuit is in disorder, and electrified conductor exposes, carries out the inconvenience of inspection maintenance to maintenance and staff, has the potential safety hazard.
Disclosure of Invention
In view of this, the inventor of the invention developed a novel prepaid metering complete set of device, seal all insulating ring main unit and integral casting metering device in a box, connect through the touchable plug with high-tension cable, the whole has no naked electrified conductor, safe and reliable to run, prevent the small animal from entering the box and causing the short-circuit fault effectively, and the greatly reduced box external dimension, save the land, the invention collects prepaid metering, protecting, function such as the cable branching, etc. into one body, suitable for in various 35kV alternating current cable power supply lines.
The invention has the functions of high-voltage metering, cost control management, fault detection, protection control and communication. The device is suitable for being arranged at the user incoming line responsibility demarcation point of an alternating current 50Hz and 35kV high-voltage alternating current cable power supply line, and can also be used for branch lines and terminal lines.
The outdoor type closed box body is adopted, and the 35kV gas-insulated ring main unit, the 35kV metering transformer, the intelligent controller, the short-circuit grounding fault indicator, the electrified display and the like are packaged together, so that the outdoor type closed box body is compact in structure, safe and reliable.
According to an embodiment of the present invention, there is provided a 35kV prepaid metering kit comprising a wire inlet chamber, a transformer chamber, a juxtaposed switch chamber and metering chamber, and a wire outlet chamber arranged in sequence in a wire inlet direction, wherein a wire inlet plug and a wire inlet sleeve are arranged in sequence in the wire inlet chamber, the transformer chamber is provided with the current transformer and a voltage transformer in sequence, wherein a cable is connected to a wire inlet end of the wire inlet sleeve through the wire inlet plug and then connected to a wire inlet side of the current transformer from a wire outlet end of the wire inlet sleeve, the voltage transformer is directly connected in parallel to a wire outlet side of the current transformer, wherein the wire inlet chamber is provided with the ring main unit, and an intelligent controller, the cable is connected to the wire inlet sleeve of the ring main unit via the wire outlet side of the current transformer, and then enters the wire outlet chamber via the wire outlet sleeve of the ring main unit, and the intelligent controller is placed in a small box together with a secondary circuit, wherein the wire inlet chamber, the switch chamber, the wire inlet chamber, the wire outlet chamber, the metering chamber, the wire transformer and the wire outlet sleeve are directly connected to the wire outlet side of the current transformer, and the meter are further provided with a current meter, and the meter is protected from the primary meter.
Compared with the prior device and method, the invention has the following beneficial effects:
1. compared with other conventional 35kV indoor vacuum circuit breakers, isolating switches and grounding switches, the gas-insulated ring main unit has the advantages of small volume and small occupied space, and the size of the box body can be reduced to 3400 x 1600 x 2100; the gas-insulated ring main unit is maintenance-free, safe and reliable;
2. the casting type voltage and current transformers are adopted, are independently packaged in a space, are opened in front and back, are connected with the switch and the wire inlet sleeve through the cable, and are connected with the copper bar, so that the space is saved and the cost is saved;
3. from the incoming line to the outgoing line, the wires are discharged from left to right for one time, so that the space is saved maximally while the safety distance is ensured;
4. the gas-insulated ring main unit, the metering transformer and the intelligent demarcation controller are combined in a closed box body, and the automatic power transmission function after the user arrears is powered off and the user arrears is realized through a control loop (secondary loop), so that the short message can be remotely controlled to be opened and closed in situ, and the manual and short message can not be closed after the user arrears; compared with the traditional prepaid control, after the power is off, the switching-off and the power-on are required to be manually switched on, the prepaid device of the company has the functions of switching-off and switching-on, and the power-on is automatically switched on, so that the switching-off is not required to be manually switched off, the power supply recovery time of a user is saved, and the user is not required to go to the site to transmit power.
Drawings
FIG. 1 is an exterior view of a 35kV prepaid metering kit in accordance with an embodiment of the present invention;
FIG. 2 is a top cross-sectional view of a 35kV pre-paid metering kit in accordance with an embodiment of the invention;
FIG. 3 is a side cross-sectional view of a 35kV prepaid metering kit in accordance with an embodiment of the present invention;
fig. 4 is a top view of a 35kV prepaid metering kit according to an embodiment of the invention.
Detailed Description
The implementation of the technical scheme is described in further detail below with reference to the accompanying drawings.
Those skilled in the art will appreciate that while the following description refers to numerous technical details regarding embodiments of the present invention, this is meant as an example only, and not meant to be limiting, of the principles of the present invention. The present invention can be applied to other than the technical details exemplified below without departing from the principle and spirit of the present invention.
In addition, in order to avoid limiting the description of the present specification to redundancy, in the description in the present specification, some technical details that can be obtained in the prior art material may be omitted, simplified, changed, etc., as will be understood by those skilled in the art, and this does not affect the disclosure sufficiency of the present specification.
Hereinafter, embodiments for realizing the present invention will be described with reference to the accompanying drawings.
The invention provides a floor type prepayment device which mainly comprises a main switch, a voltage transformer, a current transformer, an intelligent controller, an incoming line sleeve, an incoming and outgoing line plug, a 35kV high-voltage cable and other components.
Fig. 1 is an external view of a 35kV prepaid metering kit according to an embodiment of the invention.
Referring to the box appearance shown in fig. 1, wherein, the box can adopt 2-3mm thick galvanized sheet welding preparation, and the box upper cover has certain slope, prevents that the rainwater from piling up, and the box upper cover adopts the structure of sinking, can effectively prevent that the rainwater from getting into the box along upper cover edge. The box size may be 3400 x 1600 x 2100 (long x wide x high).
FIG. 2 is a top cross-sectional view of a 35kV pre-paid metering kit in accordance with an embodiment of the invention; fig. 3 is a side cross-sectional view of a 35kV prepaid metering kit according to an embodiment of the invention.
As shown in fig. 2 and 3, the box body is divided into five compartments, and is arranged in a mesh shape, and the five compartments are sequentially arranged from left to right (from top left to bottom right, i.e. according to the direction of line in-out): the device comprises an incoming line chamber, a mutual inductor chamber, a side-by-side switching chamber, a metering chamber and an outgoing line chamber, wherein the metering chamber is positioned behind the switching chamber. The compartments are separated by a partition.
The wire inlet chamber is internally provided with a wire inlet lightning arrester, a wire inlet plug and a wire inlet sleeve in sequence, wherein the wire inlet plug is a touchable plug, a wire inlet cable is connected to a wire inlet end of the wire inlet sleeve through the touchable plug, and then the wire inlet cable is connected to a wire inlet side of a current transformer (positioned in the transformer chamber) from a wire outlet end of the wire inlet sleeve, and can be sheathed for insulation protection. The wire inlet sleeve is a wall-through type double-head sleeve and is arranged on a wire inlet chamber partition plate, one end of the wire inlet sleeve is connected with a cable inlet, and the other end of the wire inlet sleeve is connected with a current transformer through a touchable cable plug.
The current transformer and the voltage transformer are sequentially arranged in the transformer chamber. The voltage transformer adopts three indoor epoxy resin pouring type single-phase voltage transformers to be connected in a star shape, so as to provide metering voltage for the electric energy meter and provide power for the control loop. The current transformer adopts three indoor epoxy resin pouring type single-phase current transformers, and is provided with three windings for protection, measurement and metering, and provides metering current for the electric energy meter and measuring current and protection current signals for the intelligent controller. The incoming cable is connected to the incoming sleeve of the ring main unit in the switch chamber through the touchable cable plug on the outgoing side of the current transformer, and finally the outgoing cable is connected to the outgoing sleeve of the ring main unit through the touchable cable plug. The voltage transformer is directly connected in parallel to the outgoing line side of the current transformer, and is protected by an insulating sheath, and the whole primary loop is free of an electrified exposed part;
the switch room is internally provided with the ring main unit (main switch), which is a gas insulation ring main unit, and can adopt a breaker unit or a load switch unit for cutting off normal load current and fault current, and the body is provided with an isolating switch and a grounding switch and is mutually locked. The intelligent controller is also arranged in the switch room, has the functions of overcurrent control, quick-break control, user demarcation control and the like, can be manually operated in situ by remote control, is displayed by liquid crystal, can not be manually switched on after the user defaults to switch off, and is automatically powered on and switched on after the user pays.
The metering chamber is also fitted with a meter (electric energy meter).
Four corners in the metering chamber (or the whole box body) are respectively provided with a group of temperature and humidity sensors, four temperatures and humidity T1, T2, T3 and T4 and H1, H2, H3 and H4 are collected, and a temperature value T and a humidity value H are accurately calculated through a temperature and humidity controller:
T 11 ＝0.15×T1+0.2×T2+0.25×T3+0.4×T4；
T 12 ＝0.15×T3+0.2×T4+0.25×T1+0.4×T2；
H 11 ＝0.18×H1+0.26×H2+0.22×H3+0.34×H4；
H 12 ＝0.18×H2+0.26×H4+0.22×H1+0.34×H3；
when the processed temperature value T exceeds a preset value, driving four fans to dissipate heat;
when the processed humidity value H exceeds a preset value, driving a dehumidifier (such as a heater) to work, heat and dehumidify;
the above-mentioned weighting coefficients for calculating the temperature and humidity values are only examples, and those skilled in the art will understand that other weighting coefficients or other average temperature and humidity calculation methods may be used to obtain the temperature and humidity values T and H.
Fig. 4 is a top cross-sectional view of a 35kV prepaid metering kit according to an embodiment of the invention. As shown in fig. 4, the incoming line chamber is opened on the left, and a single compartment is connected with an incoming line cable through a sleeve; the transformer room is provided with front and back doors, the four doors are additionally provided with radiating fans, the transformer room is additionally provided with a heater, the temperature and the humidity in the transformer room are collected through a temperature and humidity sensor, the temperature and humidity in the transformer room are calculated through a temperature and humidity controller, the fans or the heater are driven to work, dehumidification and cooling are carried out, and condensation caused by overhigh indoor temperature or overhigh humidity is prevented, so that the product performance is influenced; the front of the switch chamber is opened, the switch chamber operation panel is separated from other compartments by a partition board, a user can open the door under the electrified condition, the intelligent controller and the secondary control loop are closed in a small box, and the outer door of the small box is flush with the operation panel; embedded on the switch room isolation panel; the metering chamber is opened back, a transparent meter box is arranged in a single chamber, and the metering chamber is blocked by adding lead, so that the electricity is prevented from being stolen; the outlet chamber is opened on the right side and is directly connected with the sleeve of the ring main unit through a cable accessory.
From the foregoing, it will be appreciated that specific embodiments of the invention have been described herein for purposes of illustration, but that various modifications may be made without deviating from the scope of the invention. Those of skill in the art will understand that the operations and routines depicted in the flowchart steps or described herein may be varied in many ways. More specifically, the order of the steps may be rearranged, the steps may be performed in parallel, the steps may be omitted, other steps may be included, various combinations of routines may be made, or the omission may be omitted. Accordingly, the invention is limited only by the following claims.
Claims (6)
1. A 35kV prepaid metering kit comprising a wire inlet chamber, a transformer chamber, a juxtaposed switch chamber and metering chamber, and a wire outlet chamber arranged in sequence in a wire inlet direction, wherein a wire inlet plug and a wire inlet sleeve are arranged in sequence in the wire inlet chamber, a current transformer and a voltage transformer are arranged in sequence in the transformer chamber, wherein a cable is connected to a wire inlet end of the wire inlet sleeve through the wire inlet plug and then is connected to a wire inlet side of the current transformer from a wire outlet end of the wire inlet sleeve, the voltage transformer is directly connected in parallel to a wire outlet side of the current transformer, wherein a ring main unit and an intelligent controller are arranged in the switch chamber, the cable is connected to the wire inlet sleeve of the ring main unit via the wire outlet side of the current transformer, and then enters the wire outlet chamber via the wire outlet sleeve of the ring main unit, and the intelligent controller is arranged in a small box together with a secondary circuit, wherein the wire inlet chamber, the transformer chamber, the switch chamber and the wire inlet chamber are connected to a wire outlet side of the current transformer and are sheathed, and the whole meter is further provided with an insulation protection circuit, the whole meter is provided with a current transformer, the ring main unit and the meter is normally provided with a current meter, the current meter and the meter is in the protection and the current meter is in the protection and the protection circuit; the current transformers are three indoor epoxy resin pouring type single-phase current transformers and are provided with three windings for protection, measurement and metering, wherein incoming cables are connected to incoming bushings of a ring main unit in the switch room through touchable cable plug heads on outgoing sides of the current transformers; the intelligent controller has the functions of overcurrent control, quick-break control and user demarcation control, can be manually operated in situ by remote control and liquid crystal display, can not be manually switched on after the user defaults to switch off, and can be automatically powered on to switch on after the user pays; wherein, when taking the inlet wire direction as left and right directions: the intelligent instrument transformer is characterized in that the inlet wire chamber is a left side door, the transformer chamber is a front and back door, a cooling fan is additionally arranged on the door, a dehumidifier is additionally arranged in the transformer chamber, the temperature and the humidity in the transformer chamber are collected through a temperature and humidity sensor, the temperature and humidity sensor is used for calculating through a temperature and humidity controller, the fan or the dehumidifier is driven to work, the switch chamber is a front door, an operation panel in the switch chamber is separated from other compartments through a partition board, a user can open the door under the electrified condition, the metering chamber is a back door, and a transparent meter box is arranged in the metering chamber; the outgoing line chamber is a right door and is directly connected with the ring main unit sleeve through a cable accessory to be outgoing.
2. The 35kV pre-paid metering kit according to claim 1, wherein the 35kV pre-paid metering kit is of a box structure, the box is made of galvanized plates with the thickness of 2-3mm by welding, and an upper cover of the box is of a slope shape with a sunken upper surface.
3. The 35kV prepaid metering kit of claim 1, wherein the inlet bushing is a wall-through double-ended bushing mounted on an inlet compartment partition, one end of the inlet bushing being connected to a cable inlet, the other end of the inlet bushing being connected to the current transformer by a touchable cable plug.
4. The 35kV prepayment metering device according to claim 1, wherein the front stage of the incoming plug in the incoming room is also connected with an incoming lightning arrester,
the voltage transformers are connected in star mode by three indoor epoxy resin pouring type single-phase voltage transformers, and are used for providing metering voltage for the electric energy meter and providing power for the control loop.
5. The 35kV prepaid metering kit of claim 1, wherein the gas-insulated ring main unit employs a circuit breaker unit or a load switch unit for cutting off normal load current and fault current, and the gas-insulated ring main unit body has a disconnecting switch and a grounding switch and is mutually locked.
6. The 35kV prepaid metering kit according to claim 1, wherein a set of temperature and humidity sensors are respectively arranged at four corners in the metering chamber, four temperatures T1, T2, T3, T4 and four humidities H1, H2, H3, H4 are collected, an average temperature T and an average humidity H are obtained by respectively weighting and summing the four temperatures T1, T2, T3, T4 and the four humidities H1, H2, H3, H4,
if T exceeds a preset value, driving four fans in the metering chamber to dissipate heat;
and if H exceeds a preset value, driving a dehumidifier in the metering chamber to dehumidify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810105194.XA CN108233244B (en) | 2018-02-02 | 2018-02-02 | 35kV prepayment metering complete device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810105194.XA CN108233244B (en) | 2018-02-02 | 2018-02-02 | 35kV prepayment metering complete device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108233244A CN108233244A (en) | 2018-06-29 |
| CN108233244B true CN108233244B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810105194.XA Active CN108233244B (en) | 2018-02-02 | 2018-02-02 | 35kV prepayment metering complete device |
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| CN (1) | CN108233244B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109599766A (en) * | 2018-12-20 | 2019-04-09 | 国网江苏省电力有限公司镇江供电分公司 | Outdoor pole top switch operation power case |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200290768Y1 (en) * | 2002-06-21 | 2002-10-04 | 주식회사 세니온 | Control Cubicle of gas insulated switchgear for distribution automation system |
| CN204927858U (en) * | 2015-08-17 | 2015-12-30 | 济宁精创开关电器有限公司 | Novel multi -functional high pressure measurement cabinet of prepayment |
| CN205753074U (en) * | 2016-01-20 | 2016-11-30 | 山东纵华智能电气有限公司 | A kind of 10kV lands pre-payment complexes |
| CN106684744A (en) * | 2016-12-12 | 2017-05-17 | 国网北京市电力公司 | Substation |
| CN207994462U (en) * | 2018-02-02 | 2018-10-19 | 山东纵华智能电气有限公司 | 35kV prepayment metering complexes |
-
2018
- 2018-02-02 CN CN201810105194.XA patent/CN108233244B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200290768Y1 (en) * | 2002-06-21 | 2002-10-04 | 주식회사 세니온 | Control Cubicle of gas insulated switchgear for distribution automation system |
| CN204927858U (en) * | 2015-08-17 | 2015-12-30 | 济宁精创开关电器有限公司 | Novel multi -functional high pressure measurement cabinet of prepayment |
| CN205753074U (en) * | 2016-01-20 | 2016-11-30 | 山东纵华智能电气有限公司 | A kind of 10kV lands pre-payment complexes |
| CN106684744A (en) * | 2016-12-12 | 2017-05-17 | 国网北京市电力公司 | Substation |
| CN207994462U (en) * | 2018-02-02 | 2018-10-19 | 山东纵华智能电气有限公司 | 35kV prepayment metering complexes |
Non-Patent Citations (1)
| Title |
|---|
| XGN□―12型箱式交流金属封闭开关设备;李禹生;郝逢南;;电气制造(第04期);全文 * |
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| CN108233244A (en) | 2018-06-29 |
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