CN204067908U - A kind of electrical control cabinet - Google Patents
A kind of electrical control cabinet Download PDFInfo
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- CN204067908U CN204067908U CN201420466828.1U CN201420466828U CN204067908U CN 204067908 U CN204067908 U CN 204067908U CN 201420466828 U CN201420466828 U CN 201420466828U CN 204067908 U CN204067908 U CN 204067908U
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- 238000004891 communication Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000007791 dehumidification Methods 0.000 claims abstract description 15
- 241000233805 Phoenix Species 0.000 claims abstract description 11
- 238000005286 illumination Methods 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims description 16
- 230000002459 sustained effect Effects 0.000 claims description 8
- 230000007257 malfunction Effects 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract description 3
- 241000196324 Embryophyta Species 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides a kind of electrical control cabinet, comprise cabinet and cabinet door, described cabinet door and described cabinet are rotationally connected by hinge, described cabinet is cuboid, in cabinet, horizontal top and base plate are separately installed with LED illumination lamp and heating and dehumidification device, be provided with vertical electric mounting board between described top board and described base plate, on described electric mounting board, vertical direction is provided with communication device, PLC control device, auxiliary relay, air switch, phoenix terminal, isolating transformer and ups power successively; Described isolating transformer, described ups power, described air switch, described PLC control device and described communication control unit connect successively, described auxiliary relay is connected with described PLC control device, and described LED illumination lamp is connected with described air switch respectively with described heating and dehumidification device.This electrical control cabinet can each primary cut-out switch in automatic control light overhead utility low voltage crossing detection experiment process and contactor deciliter.
Description
Technical field:
The utility model relates to a kind of electrical control cabinet, specifically relates to a kind of electrical control cabinet being applicable to photovoltaic plant low voltage crossing checkout gear.
Background technology:
Along with the development of photovoltaic industry, wide in region especially, sunshine aboundresources, theCourse of PV Industry is swift and violent, and photovoltaic generation proportion in electrical network constantly increases.When grid collapses causes Voltage Drop, if Large Copacity photovoltaic grid-connection power plant does not possess low voltage crossing (Low Voltage Ride Through, LVRT) ability, significant impact will be produced to stability of power system.
Therefore, China has successively promulgated national grid enterprise mark Q/GDW617-2011 " photovoltaic plant access electric power network technique regulation ", GB GB/T19964-2012 " photo-voltaic power generation station access power system technology regulation " and industry standard NB/T 32005-2013 " photo-voltaic power generation station low voltage crossing detection technique code ".
Require in GB GB/T19964-2012 that high-power photovoltaic synchronization inverter must have low voltage ride-through capability, it is grid-connected must meet corresponding technical standard, only have when grid voltage sags just allows photovoltaic DC-to-AC converter off-grid lower than regulation curve later, simultaneously when voltage is at sunk part, inverter should provide reactive power.
Voltage sag generator is arranged in tested photovoltaic generation unit and station between collection bus, and when carrying out Voltage Drop test, needs disconnect by hand or the switch of sealing voltage sag generator carrys out simulating grid Voltage Drop.Experimental implementation difficulty is comparatively large, and easily occurs wiring error, causes the accident.
For this reason, need to provide a kind of electrical control cabinet, realize automatically controlling the divide-shut brake of Voltage Drop device switch, ensure the personal safety of operating personnel.
Utility model content:
In order to overcome above-mentioned deficiency existing in prior art, the utility model provides a kind of electrical control cabinet.
The technical scheme that the utility model provides is: a kind of electrical control cabinet, comprise cabinet and cabinet door, described cabinet door and described cabinet are rotationally connected by hinge, its improvements are: described cabinet is cuboid, in cabinet, horizontal top and base plate are separately installed with LED illumination lamp and heating and dehumidification device, be provided with vertical electric mounting board between described top board and described base plate, on described electric mounting board, vertical direction is provided with communication device, PLC control device, auxiliary relay, air switch, phoenix terminal, isolating transformer and ups power successively; Described isolating transformer, described ups power, described air switch, described PLC control device and described communication control unit connect successively, described auxiliary relay is connected with described PLC control device, and described LED illumination lamp is connected with described air switch respectively with described heating and dehumidification device.
Preferably, on described cabinet door, vertical direction is inlaid with status indicator lamp, ammeter, shift knob, three-phase current pressing plate and shunting switch control box successively, described cabinet door between described ammeter and described shift knob being pasted with system electrical principle line chart, described cabinet door being provided with the handle for pulling open cabinet door; Described status indicator lamp, described shift knob are connected with described PLC control device respectively, and described three-phase current pressing plate is connected with described ammeter.
Preferably, the both sides panel of described electrical control cabinet is provided with the venetian blind type louvre realizing folding by blade rotary.
Preferably, the axial length of described cabinet horizontal X is 750-850mm, is 1950-2050mm with the wide height for 500-650mm, vertical Z-direction of the Y direction perpendicular to described X-axis of described X-axis same level.
Preferably, described communication device comprises the communication controller and Ethernet switch that vertical Z-direction be arranged in parallel, and described communication controller is connected with described PLC control device and described Ethernet switch respectively.
Preferably, described PLC control device comprises PLC logic controller and the 24V power supply of the setting of sustained height X-direction, and described power supply is connected with described auxiliary relay and described PLC logic controller respectively.
Further, described status indicator lamp comprises equidistant indicator of the power supply status, holding state indicator light, trystate indicator light and the malfunction indicator light be embedded on described cabinet door of sustained height X-direction; Described indicator of the power supply status, described holding state indicator light, described trystate indicator light are connected with described PLC logic controller respectively by phoenix terminal with described malfunction indicator light.
Further, described ammeter comprises sustained height X-direction and is embedded in voltmeter on described cabinet door and ammeter, and air switch is connected with described voltmeter with described ammeter respectively, and described ammeter is connected with described three-phase current pressing plate.
Further, described shift knob comprise sustained height X-direction equidistant be embedded on described cabinet door start/stop button, pause button and debugging/test button; Described start/stop button, described pause button and described debugging/test button are connected with described PLC logic controller respectively by phoenix terminal.
The utility model has following beneficial effect:
1, electrical control cabinet of the present utility model adopts ups power to power, and makes to there will not be unexpected power-off in process of the test, ensure that the reliability service of test;
2, LED illumination lamp installed by electrical control cabinet inside ceiling panel, illuminance is strong, makes rush to repair easily and reliably during electrical control cabinet catastrophic failure at night;
The both sides panel of 3, electrical control cabinet is provided with the rotatable venetian blind type louvre of blade, when temperature height, opens louvre, can effectively hot gas in cabinet be discharged outside cabinet;
4, in electrical control cabinet, heating and dehumidification device is installed, when temperature is low, can louvre be closed, start heating function; During high humidity, dehumidification function can be opened; Ensure that the humiture balance in electrical control cabinet, optimize the running environment of device, ensure that experimental safe reliably runs.
5, adopt each primary cut-out switch in auxiliary relay automatic control light overhead utility low voltage crossing detection experiment process and contactor deciliter, no longer need artificial step switch, ensure that the safe and stable operation of electric equipment in process of the test, the safety of the person that ensure that test operation.
Accompanying drawing illustrates:
The connection layout of each device of the electrical control cabinet that Fig. 1 provides for the utility model;
The cabinet door schematic diagram of the electrical control cabinet that Fig. 2 provides for the utility model;
Mounting arrangement figure in the cabinet of the electrical control cabinet that Fig. 3 provides for the utility model;
Wherein: 1-PLC logic controller; 2-power module; 3-auxiliary relay; 4-air switch; 5-phoenix terminal; 6-status indicator lamp; 7-ammeter; 8-voltmeter; 9-three-phase current pressing plate; 10-shunting switch control box.
Embodiment:
In order to understand the utility model better, below in conjunction with Figure of description and example, content of the present utility model is described further.
The device connection layout of the electrical control cabinet that the utility model provides is as shown in Figure 1:
All realize electrical connection by phoenix terminal 5 between each device in Fig. 1, control cubicle is using PLC logic controller 1 as control core, and PLC is by the divide-shut brake of auxiliary relay 3 control switch cabinet, contactor, and the lifting of tap changer gear; PLC carries out real-time communication by communication controller and Ethernet switch, all sends the state of current electric equipment to background monitoring machine;
Uninterrupted ups power ensure that in process of the test and there will not be unexpected power-off; The use of heating and dehumidification equipment, for the electric equipment in control cubicle provides good running environment; The use of LED illumination lamp, can see the device in cabinet easily clearly.
The whole cabinet of electrical control cabinet is long is 750-850mm, wide be 500-650mm, high be 1950-2050mm.Be of a size of 800mm*600mm*2000mm for length, width and height, electrical control cabinet cabinet door layout and display as shown in Figure 2:
Cabinet door is provided with the handle for opening cabinet door, cabinet door adopts R.H.flapped door form; It is inlaid with state display lamp topmost, voltmeter 8 and ammeter 7 is inlayed below state display lamp, the electrical principle line chart of whole system is pasted with below voltmeter 8 and ammeter 7, the beginning in process of the test, stopping and scram button is inlaid with below schematic diagram, below is inlaid with electric current pressing plate again, and the bottom is inlaid with three square shunting switch control boxes 10.
Fig. 3 is each equipment mounting arrangement figure on mounting panel in cabinet.
Mounting panel is topmost Ethernet switch and communication controller, PLC main frame and power module 2 below it, the auxiliary relay 3 of mounting panel centre position needed for this electrical control cabinet, below is air switch 4 and phoenix terminal 5, and bottom is isolating transformer and ups power;
For keeping in cabinet line between equipment reliable, ensure in cabinet clean and tidy, between communication controller and PLC main frame, between PLC main frame and auxiliary relay 3, between auxiliary relay 3 and air switch 4, between air switch 4 and phoenix terminal 5, between phoenix terminal 5 and isolating transformer and the surrounding of mounting panel be provided with remittance wire casing for conducting wire.
Parts selection in electrical control cabinet:
1) PLC in electrical control cabinet.
PLC in the utility model adopts Bei Jialai X20 series of PLC, and X20 module is made up of three parts, comprises base module, electrical module, terminal board.The electrical module of X20 is easy to change in running, can the power generating ratio time.
PLC outputs signal to auxiliary relay 3, and the node of auxiliary relay 3 is connected on switch cubicle and contactor, and when auxiliary relay 3 energized action, often open node and close, normally closed node disconnects, and switch cubicle and contactor carry out divide-shut brake, complete whole experiment process.
2) power supply in electrical control cabinet
This electrical control cabinet has installed the single-phase isolating transformer of a 2kVA in general supply wiring, input winding is isolated with output winding on electrically, thus suppresses high frequency spurs to import control loop into, protect personal safety simultaneously, isolation dangerous voltage.
Electric equipment in electrical control cabinet requires can not occur unexpected power-off in process of the test, otherwise can affect the carrying out of test, even causes danger.So this electrical control cabinet selects UPS uninterrupted power supply to power to each electric equipment, and ups power can provide protection to overtension or brownout.。
Ups power is connected with main frame by storage battery, by modules such as main frame inverters, direct current converted to the equipment of civil power.Be mainly used in providing stable, continual supply of electric power to other electric equipments.When civil power input is normal, UPS is supplied to load to use by after civil power voltage stabilizing, and UPS is now exactly an electric main pressurizer, and it also charges to self-contained battery simultaneously; When commercial power interruption (accident interruption), UPS, by the direct current energy of battery, continues supply 220V alternating current by the square normal load of inversion zero switch transition, load is maintained and normally works and protect load not to be damaged.
The input side of control cubicle UPS is introduced from photovoltaic plant secondary power supply control cubicle terminal, by being connected with UPS after power supply aviation plug, the output of UPS is other power electrical apparatus, even if photovoltaic plant has occurred that unexpected powering-off state also can not affect the normal divide-shut brake of other electric equipments like this, ensure that the fail safe of test.
In control cubicle, the power supply of PLC adopts direct current 24V voltage, and alternating current 220V is converted to direct current 24V voltage by the power of alterating and direct current modular converter in power module 2, powers to PLC.
3) the state display in electrical control cabinet and shift knob
The electrical control cabinet urgency be provided with in process of the test is stopped, test, stop button.And the status indicator lamp 6 of current status: comprise indicator of the power supply status, holding state indicator light, trystate indicator light and malfunction indicator light.
4) relay of electrical control cabinet
In electrical control cabinet, many places need to use auxiliary relay 3, it is the requisite electric components of PLC input and output, this electrical control cabinet auxiliary relay 3 used is the direct current 24V relay of Weidmulie Wei, relay model is DRM270024LD, each relay contains a common winding and two pairs of normally-open normally-close nodes, coil obtain electric after often open node and close, normally closed node disconnects, and realizes corresponding logic function.
5) communication of electrical control cabinet
In electrical control cabinet, the communication of equipment relates to multi-signal type, and the communication modes of different equipment is also different, and all signals all pass to the industrial computer on backstage by ethernet communication.Because multiple unlike signal combines, the utility model installs the communication that communication controller and switch carry out signal with different type in electrical control cabinet.
Wherein, communication controller adopts NPort5200A serial equipment networked server.NPort5200A serial equipment networked server has 2 mouthfuls of RS-232/422/485 serial ports, low in energy consumption, has duplicate supply input, comprises supply hub and power input terminal, support general TCP and UDP operator scheme.
6) electrical control cabinet is to the measurement of electric current and voltage
Electrical control cabinet is measured by the voltage and current of voltage transformer summation current transformer to major loop, a voltmeter 8 and an ammeter 7 is inlaid with above control cubicle cabinet door, voltmeter 8 is connected with the secondary side of voltage transformer, ammeter 7 is connected with Current Transformer Secondary side by three-phase current pressing plate 9, the break-make of ammeter 7 has been come by removing and install three-phase current pressing plate 9, utilizes voltmeter 8 and ammeter 7 can measure and show phase-voltage phase-current and line pressure-wire electric current in real time.
7) heat radiation of electrical control cabinet
In order to make electrical control cabinet run more safely and reliably, the both sides panel of electrical control cabinet is provided with the venetian blind type louvre realizing folding by blade rotary.Both sides panel arranges louvre ventilate, compared with arranging louvre with other positions at control cubicle, radiating effect is faster and better.When in-cabinet temperature height, close the heating function of electrical control cabinet, open the venetian blind type louvre of cabinet both sides, by louvre, hot gas in cabinet is discharged outside cabinet.
8) the heating and dehumidification device of electrical control cabinet
In the bottom of electrical control cabinet, heating and dehumidification device is installed, when in-cabinet temperature is lower, closes the shutter on the panel of both sides, open the heating function of heating and dehumidification equipment, can in-cabinet temperature be improved; When humidity is larger, opens the dehumidification function of heating and dehumidification equipment, can effectively reduce cabinet humidity; The balance of humiture in regulator cubicle can be ensured by the cooperating of heating and dehumidification device and shutter.
9) lighting device of electrical control cabinet
In control cubicle, top arranges LED illumination lamp, and when night, catastrophic failure appearred in electrical control cabinet, unlatching illuminating lamp conveniently can see each equipment in cabinet clearly, and for night, the repairing of electrical control cabinet provides reliable guarantee.
These are only embodiment of the present utility model, be not limited to the utility model, all within spirit of the present utility model and principle, any amendment made, equivalent replacements, improvement etc., all should be included within right of the present utility model that application awaits the reply.
Claims (9)
1. an electrical control cabinet, comprise cabinet and cabinet door, described cabinet door and described cabinet are rotationally connected by hinge, it is characterized in that: described cabinet is cuboid, in cabinet, horizontal top and base plate are separately installed with LED illumination lamp and heating and dehumidification device, be provided with vertical electric mounting board between described top board and described base plate, on described electric mounting board, vertical direction is provided with communication device, PLC control device, auxiliary relay, air switch, phoenix terminal, isolating transformer and ups power successively; Described isolating transformer, described ups power, described air switch, described PLC control device and described communication control unit connect successively, described auxiliary relay is connected with described PLC control device, and described LED illumination lamp is connected with described air switch respectively with described heating and dehumidification device.
2. a kind of electrical control cabinet as claimed in claim 1, is characterized in that:
On described cabinet door, vertical direction is inlaid with status indicator lamp, ammeter, shift knob, three-phase current pressing plate and shunting switch control box successively, described cabinet door between described ammeter and described shift knob being pasted with system electrical principle line chart, described cabinet door being provided with the handle for pulling open cabinet door; Described status indicator lamp, described shift knob are connected with described PLC control device respectively, and described three-phase current pressing plate is connected with described ammeter.
3. a kind of electrical control cabinet as claimed in claim 1, is characterized in that:
The both sides panel of described electrical control cabinet is provided with the venetian blind type louvre realizing folding by blade rotary.
4. a kind of electrical control cabinet as claimed in claim 1, is characterized in that:
The axial length of described cabinet horizontal X is 750-850mm, is 1950-2050mm with the wide height for 500-650mm, vertical Z-direction of the Y direction perpendicular to described X-axis of described X-axis same level.
5. a kind of electrical control cabinet as claimed in claim 1, is characterized in that:
Described communication device comprises the communication controller and Ethernet switch that vertical Z-direction be arranged in parallel, and described communication controller is connected with described PLC control device and described Ethernet switch respectively.
6. a kind of electrical control cabinet as claimed in claim 1, is characterized in that:
Described PLC control device comprises PLC logic controller and the 24V power supply of the setting of sustained height X-direction, and described power supply is connected with described auxiliary relay and described PLC logic controller respectively.
7. a kind of electrical control cabinet as claimed in claim 2, is characterized in that:
Described status indicator lamp comprises equidistant indicator of the power supply status, holding state indicator light, trystate indicator light and the malfunction indicator light be embedded on described cabinet door of sustained height X-direction; Described indicator of the power supply status, described holding state indicator light, described trystate indicator light are connected with described PLC logic controller respectively by phoenix terminal with described malfunction indicator light.
8. a kind of electrical control cabinet as claimed in claim 2, is characterized in that:
Described ammeter comprises sustained height X-direction and is embedded in voltmeter on described cabinet door and ammeter, and air switch is connected with described voltmeter with described ammeter respectively, and described ammeter is connected with described three-phase current pressing plate.
9. a kind of electrical control cabinet as claimed in claim 2, is characterized in that:
Described shift knob comprise sustained height X-direction equidistant be embedded on described cabinet door start/stop button, pause button and debugging/test button; Described start/stop button, described pause button and described debugging/test button are connected with described PLC logic controller respectively by phoenix terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420466828.1U CN204067908U (en) | 2014-08-18 | 2014-08-18 | A kind of electrical control cabinet |
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| CN201420466828.1U CN204067908U (en) | 2014-08-18 | 2014-08-18 | A kind of electrical control cabinet |
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| CN204067908U true CN204067908U (en) | 2014-12-31 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503445A (en) * | 2015-01-04 | 2015-04-08 | 卡尔迈耶（中国）有限公司 | Function test equipment of electrical control cabinet |
| CN104795968A (en) * | 2015-04-03 | 2015-07-22 | 南车株洲电力机车研究所有限公司 | Frequency changer |
| CN105013197A (en) * | 2015-06-03 | 2015-11-04 | 上海神农节能环保科技股份有限公司 | Efficient mechanical vapor recompression (MVR) evaporator with resource recycling function |
| CN105636385A (en) * | 2016-03-25 | 2016-06-01 | 南京工程学院 | Multifunctional PLC control cabinet applied to electrical engineering |
| CN105742986A (en) * | 2016-05-12 | 2016-07-06 | 上海时脉电力设备有限公司 | Medical power supply cabinet |
| CN106159781A (en) * | 2016-08-22 | 2016-11-23 | 沈国兴 | A kind of low voltage drawing-out switching carbinet |
| CN109365581A (en) * | 2018-11-22 | 2019-02-22 | 国网江苏省电力有限公司南通供电分公司 | A kind of automation equipment and application method applying to metal tube bending machine |
| CN110441665A (en) * | 2019-09-06 | 2019-11-12 | 云南电网有限责任公司电力科学研究院 | In situ DC pressure resistance and local discharge test device for ± 500kV converter station |
| CN110783829A (en) * | 2019-11-11 | 2020-02-11 | 陈忠海 | High-efficient safe intelligent power supply unit |
-
2014
- 2014-08-18 CN CN201420466828.1U patent/CN204067908U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503445A (en) * | 2015-01-04 | 2015-04-08 | 卡尔迈耶（中国）有限公司 | Function test equipment of electrical control cabinet |
| CN104795968A (en) * | 2015-04-03 | 2015-07-22 | 南车株洲电力机车研究所有限公司 | Frequency changer |
| CN104795968B (en) * | 2015-04-03 | 2018-09-04 | 南车株洲电力机车研究所有限公司 | Frequency converter |
| CN105013197A (en) * | 2015-06-03 | 2015-11-04 | 上海神农节能环保科技股份有限公司 | Efficient mechanical vapor recompression (MVR) evaporator with resource recycling function |
| CN105636385A (en) * | 2016-03-25 | 2016-06-01 | 南京工程学院 | Multifunctional PLC control cabinet applied to electrical engineering |
| CN105742986A (en) * | 2016-05-12 | 2016-07-06 | 上海时脉电力设备有限公司 | Medical power supply cabinet |
| CN106159781A (en) * | 2016-08-22 | 2016-11-23 | 沈国兴 | A kind of low voltage drawing-out switching carbinet |
| CN109365581A (en) * | 2018-11-22 | 2019-02-22 | 国网江苏省电力有限公司南通供电分公司 | A kind of automation equipment and application method applying to metal tube bending machine |
| CN110441665A (en) * | 2019-09-06 | 2019-11-12 | 云南电网有限责任公司电力科学研究院 | In situ DC pressure resistance and local discharge test device for ± 500kV converter station |
| CN110783829A (en) * | 2019-11-11 | 2020-02-11 | 陈忠海 | High-efficient safe intelligent power supply unit |
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