CN205104777U - Lightning -protection power distribution cabinet - Google Patents

Lightning -protection power distribution cabinet Download PDF

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Publication number
CN205104777U
CN205104777U CN201520770412.3U CN201520770412U CN205104777U CN 205104777 U CN205104777 U CN 205104777U CN 201520770412 U CN201520770412 U CN 201520770412U CN 205104777 U CN205104777 U CN 205104777U
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CN
China
Prior art keywords
cabinet
lightning protection
metering device
power distribution
distribution cabinet
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Application number
CN201520770412.3U
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Chinese (zh)
Inventor
魏明磊
李晓龙
孙辰军
杨海运
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201520770412.3U priority Critical patent/CN205104777U/en
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Publication of CN205104777U publication Critical patent/CN205104777U/en
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Abstract

The utility model discloses a lightning -protection power distribution cabinet, the control cabinet comprises a cabinet body and a cabinet door, the high cabinet top at the end all around in the middle of cabinet body top is equipped with, four faces of the cabinet body all are equipped with the cabinet door, the cabinet body still includes the base, the cabinet is internal to be equipped with a plurality of metering device, installs in the block terminal, every metering device's metering device output is used for exporting electric force information, a collection system includes: the collection system output is respectively with every metering device's metering device input is connected, is used for to every the metering device input sends gathers the instruction, the collection system input is with every metering device the metering device output is connected, is used for gathering metering device electricity force information, a lightning protection supply circuit, a plurality of metering device and lightning protection supply circuit are connected, a communication device, with collection system connects, be used for with the electric force information that collection system gathered sends external equipment.

Description

Lightning protection power distribution cabinet
Technical field
The utility model relates to a kind of lightning protection power distribution cabinet.
Background technology
Along with the progress of science and technology, the automated system be made up of microcomputer and large scale integrated circuit device, replaces the relaying protection of conventional measurement and supervisory instrument, conventional control flow, central signal system, telemechanical screen and routine.Improve automation and intelligent level.
But; produced problem is thereupon; for the integrated circuit of microsystem; working voltage only has the three ten-day period of hot season, signal code is only microampere order; shock-resistant capacity is possessed little than electromagnetic type protective device in the past; more fragile to the tolerance of surge, particularly the transient state impact of Lightning Over-voltage can cause microsystem badly damaged, and therefore the anti-lightning strike problem of the comprehensive automation such as microsystem, computer network at present, intelligent equipment is required to incorporate in normal protection.
Summary of the invention
For the problems referred to above, the utility model provides a kind of lightning protection power distribution cabinet.
For achieving the above object, the technical solution adopted in the utility model is: lightning protection power distribution cabinet, comprises cabinet and cabinet door, and described cabinet top is provided with the cabinet top at the bottom of middle high surrounding, and four faces of described cabinet are equipped with cabinet door; Described cabinet also comprises base; Be provided with multiple metering device in described cabinet, be arranged in described power distribution cabinet, the metering device output of each described metering device is used for output power information;
A harvester, comprising: harvester output, is connected respectively with the metering device input of each described metering device, for sending acquisition instructions to each described metering device input; Harvester input, is connected with the described metering device output of each described metering device, for gathering the described power information of described metering device;
One lightning protection power supply circuits, described multiple metering device is connected with lightning protection power supply circuits;
A communicator, is connected with described harvester, is sent to external equipment for the power information gathered by described harvester.
Further, described lightning protection power supply circuits comprise: lightning protection circuit, indicating equipment and output unit, and wherein, the input of described lightning protection circuit is connected with power-supply system, the output of described lightning protection circuit is connected with output unit, for eliminating the lightning surge voltage to being entered by power-supply system;
The first order vent unit, second level choke unit and the third level clamping unit that are connected successively is comprised in described lightning protection circuit;
Described indicating equipment is connected with lightning protection circuit, for each phase current in described lightning protection circuit Nei Mei road, voltage being shown;
The output of described output unit is connected with metering device, for powering to described metering device.
Further, described cabinet door is provided with shutter, and Open Side Down for described shutter, establishes gauze in shutter.
Further, described cabinet inside is provided with lighting device, and described lighting device comprises at least one lamp body and a push switch, and lamp body is connected with push switch.
Further, be provided with the through hole for threading and insulation cushion below described power distribution cabinet, it is characterized in that, an earth connection is set up in the bottom of described cabinet, described earth connection is connected to described bottom of cabinet bulk, is used for the electrostatic on power distribution cabinet being imported in time ground release.
Further, described earth connection has been set up a unilateral diode, the positive terminal of described unilateral diode is connected with distribution enclosure box.
Further, the cabinet door back side is provided with the interlayer of the above-below direction parallel with cabinet door, and this interlayer and cabinet door form the sandwich passage of above-below direction, and the upper port of described sandwich passage is provided with blower fan, and this fan outlet is connected in series with the upper port of described sandwich passage.
Further, described cabinet door is followed successively by internal layer, middle level and skin from inside to outside, described internal layer is from inside to outside for being respectively equipped with radiation protective layer and sealant, described middle level is the double-decker of leakproof electric layer and fireprotection layer composition, skin is high-strength insulating armour, and described cabinet outdoors portion is also provided with insulation antidetonation frame.
Further, described cabinet is provided with Intelligent indicating device, and described Intelligent indicating device comprises:
Switch, indicating device and warning device, wherein,
Described switch, for starting or stoping described indicating device;
Described indicating device, is connected with described switch, after starting at described indicating device, indicate power equipment to be in electriferous state;
Described warning device, is connected with described switch, comprises: heat sensor, alarm distance adjusting device and alarm, wherein,
Described alarm distance adjusting device, for arranging alarm distance;
Described heat sensor, for detecting the distance of thermal source and described power equipment;
Described alarm, is connected between described heat sensor and described alarm distance adjusting device, for when the distance of thermal source and described power equipment is less than described alarm distance, sends the alarm of described charged electric power apparatus.
Further, be also provided with in described cabinet:
Humidity sensor, is arranged in described cabinet to detect the real-time humidity of the inside of described cabinet;
Comparator, is connected with described humidity sensor with more described real-time humidity and default humidity;
Dehumidifier, is connected with described comparator, to dehumidify when described real-time humidity is greater than described default humidity.
Beneficial effect:
Compared with existing correlation technique, the technical program has following beneficial effect:
The utility model utilizes the lightning protection supply access be arranged in cabinet, the lightning surge voltage entered by power-supply system is carried out three grades of eliminations through first order vent unit, second level choke unit and third level clamping unit, and then lightning surge voltage can be avoided to cause damage by power-supply system to metering device.
In addition, straight-through power supply circuits and commutation circuit is also provided with in this lightning protection power distribution cabinet, when few thunderstorm season (such as winter), lightning protection circuit fault, maintenance or when maintaining, commutation circuit can by straight-through power supply circuits conducting, and disconnected by lightning protection power supply circuits, and then when can be implemented in maintenance, do not interrupt the power supply of metering device.
Accompanying drawing explanation
Fig. 1 is the structural representation of this lightning protection power distribution cabinet;
Fig. 2 is the structural representation of this lightning protection circuit.
Embodiment
Below in conjunction with Figure of description, the technical program is further described.
Embodiment 1
As shown in Figure 1, the present embodiment lightning protection power distribution cabinet, comprises cabinet 1 and cabinet door 2, described cabinet 1 top is provided with the cabinet top 3 at the bottom of middle high surrounding, four faces of described cabinet 1 are respectively equipped with cabinet door 2, are provided with channel steel base 4 bottom described cabinet 1, and described channel steel base 4 inside is provided with pull-out type lifting rod 5; Being provided with bottom described cabinet 1 can through the installing hole 7 of various cable, the conveniently heat radiation of electric equipment in ring main unit.The rainwater on cabinet top 3 can be discharged by the cabinet top 3 of cabinet 1 crown center high surrounding bottom structure effectively; Cabinet 1 all around four faces is offered cabinet door 2 respectively and handled easily personnel can be carried out the installation of electrical equipment; Channel steel base 4 bottom cabinet 1 can avoid direct bottom cabinet 1 and earth surface, the moisture on ground can corrode the useful life that cabinet 1 bottom steel project rings cabinet, pull-out type lifting rod 5 can be housed in channel steel base 4 simultaneously, need only lifting rod 5 to be extracted out from channel steel base 4 during mobile ring main unit, only lifting rod 5 need be pushed channel steel base 4 after lifting terminates inner, not affect product appearance.
Be provided with multiple metering device in described cabinet, be arranged in described power distribution cabinet, the metering device output of each described metering device is used for output power information;
A harvester, comprising: harvester output, is connected respectively with the metering device input of each described metering device, for sending acquisition instructions to each described metering device input; Harvester input, is connected with the described metering device output of each described metering device, for gathering the described power information of described metering device;
One lightning protection power supply circuits, described multiple metering device is connected with lightning protection power supply circuits;
A communicator, is connected with described harvester, is sent to external equipment for the power information gathered by described harvester.
Cabinet is arranged between metering device and power-supply system usually, and like this when there is thunderbolt, first the lightning current of power system transient releases into ground by this, induction overvoltage is limited in the level that equipment can bear, from superpotential impact simultaneously.
As shown in Figure 2, lightning protection power supply circuits comprise: lightning protection circuit, indicating circuit and output circuit, and wherein, the input of described lightning protection circuit is connected with power-supply system, the output of described lightning protection circuit is connected with output circuit, for eliminating the lightning surge voltage to being entered by power-supply system.
Comprise in this lightning protection circuit: first order leadage circuit, second level choked flow circuit and third level clamp circuit, wherein, first order leadage circuit, second level choked flow circuit and third level clamp circuit three are electrically connected successively, to realize carrying out three grades of protection to thunderbolt voltage surge.
When protecting thunder and lightning, in first order leadage circuit, preset voltage threshold, when external voltage exceedes this voltage threshold, in first order leadage circuit release element can in 25ns instantaneous thunder-strike current of releasing over the ground; The circuit of second level choked flow simultaneously continues through for stoping thunder-strike current; Last third level clamping unit passes through for limiting too high lightning surge voltage, and is clamped in safety value by output voltage.
The output of described output circuit is connected with metering device, for powering to metering device.In addition, these lightning protection power supply circuits can also normal power supply while carrying out lightning Protection.
In addition, conveniently operating personnel understand the operating state in lightning protection circuit, and can also arrange in this lightning protection circuit: indicating circuit, indicating circuit is connected with lightning protection circuit, for each phase current in described lightning protection circuit Nei Mei road, voltage being shown.
In order to increase the lightning protection properties of this lightning protection power distribution cabinet, the ground wire of lightning protection circuit can also be connected with the system ground wire of metering device, namely make the ground wire of lightning protection circuit and the system ground wire of metering device carry out equipotential link, the electric power system of all metering devices is on same foundation current potential.
This lightning protection power distribution cabinet that the embodiment of the present application provides, utilize the lightning protection supply access be arranged in cabinet, the lightning surge voltage entered by power-supply system is carried out three grades of eliminations through first order vent unit, second level choke unit and third level clamping unit, and then lightning surge voltage can be avoided to cause damage by power-supply system to metering device.
Embodiment 2
The present embodiment lightning protection power distribution cabinet, on the basis of embodiment 1, described cabinet door is provided with shutter, and Open Side Down for described shutter, establishes gauze in shutter.Described shutter ventilation louver reduces operating ambient temperature in power distribution cabinet effectively, for in-box electric appliance element provides good operational environment; Simultaneously in order to prevent small worm etc. from crawling in power distribution cabinet by shutter, the present invention establishes gauze inside shutter, and can effectively prevent entering of small worm etc., the trouble free service for power distribution cabinet provides effective guarantee.
Embodiment 3
The present embodiment lightning protection power distribution cabinet, on the basis of embodiment 1, add an earth connection in the bottom of casing, described earth connection is connected to bottom the rectangular box of power distribution cabinet, is used for the electrostatic on power distribution cabinet being imported in time ground release.Owing to there being many charged electric wires bottom power distribution cabinet, oppositely pass to the rectangular box of power distribution cabinet from connect earth connection to overcome electric current when part electric wire leaks electricity, produce Danger Electric shock risk, the present invention has also set up a diode on ground path, the positive terminal of this diode is connected with distribution enclosure box, when accumulation on distribution enclosure box has electrostatic charge, and diode current flow, electrostatic charge is conducted to ground connection place, decreases the harm of electrostatic to human body; Make use of the one way general character energy that diode has simultaneously, stopped ground line current reverse flow above power distribution cabinet shell, completely eliminated the electric shock accidents caused because earth connection is charged.
In the various embodiments described above, described cabinet inside is provided with lighting device, and described lighting device comprises at least one lamp body and a push switch, and lamp body is connected with push switch.Owing to adopting technique scheme, staff carries out the operations such as installation, maintenance during to power distribution cabinet inner facility, in power distribution cabinet, daylighting is good, without the need to carrying additional light source, more convenient to operate; There is structure simple, easy to maintenance, the advantages such as processing cost is low.
In the various embodiments described above, the cabinet door back side is provided with the interlayer of the above-below direction parallel with cabinet door, and this interlayer and cabinet door form the sandwich passage of above-below direction, and the upper port of described sandwich passage is provided with blower fan, and this fan outlet is connected in series with the upper port of described sandwich passage.
In the various embodiments described above, described cabinet door is followed successively by internal layer, middle level and skin from inside to outside, described internal layer is from inside to outside for being respectively equipped with radiation protective layer and sealant, described middle level is the double-decker of leakproof electric layer and fireprotection layer composition, skin is high-strength insulating armour, and described cabinet outdoors portion is also provided with insulation antidetonation frame.
In the various embodiments described above, be provided with Intelligent indicating device in described cabinet, described Intelligent indicating device comprises:
Switch, indicating device and warning device, wherein,
Described switch, for starting or stoping described indicating device;
Described indicating device, is connected with described switch, after starting at described indicating device, indicate power equipment to be in electriferous state;
Described warning device, is connected with described switch, comprises: heat sensor, alarm distance adjusting device and alarm, wherein,
Described alarm distance adjusting device, for arranging alarm distance;
Described heat sensor, for detecting the distance of thermal source and described power equipment;
Described alarm, is connected between described heat sensor and described alarm distance adjusting device, for when the distance of thermal source and described power equipment is less than described alarm distance, sends the alarm of described charged electric power apparatus.
In the various embodiments described above, be also provided with in described cabinet:
Humidity sensor, is arranged in described cabinet to detect the real-time humidity of the inside of described cabinet;
Comparator, is connected with described humidity sensor with more described real-time humidity and default humidity;
Dehumidifier, is connected with described comparator, to dehumidify when described real-time humidity is greater than described default humidity.
Humidity sensor is arranged in cabinet, can detect the real-time humidity of the inside of cabinet.Comparator is connected with humidity sensor, and the signal of the real-time humidity in the cabinet detected is issued comparator by humidity sensor, and the real-time humidity in the cabinet detected by humidity sensor in a comparator and default humidity compare.When real-time humidity is greater than default humidity, comparator sends dehumidifying signal.Dehumidifier is connected with comparator, dehumidifies when dehumidifier receives dehumidifying signal.Said structure adopts the air humidity in automatic control cabinet body, effectively regulates the air humidity of the inside of cabinet, and then effectively ensures the safe operation of controller switching equipment, improves the reliability of power supply, ensures that the people can not be subject to economic loss.Meanwhile, said structure adopts the mode automatically controlled to replace manually operated mode, effectively ensures that operations staff can not come to harm, effectively reduces the working strength of operations staff.

Claims (10)

1. a lightning protection power distribution cabinet, is characterized in that: comprise cabinet and cabinet door, and described cabinet top is provided with the cabinet top at the bottom of middle high surrounding, and four faces of described cabinet are equipped with cabinet door; Described cabinet also comprises base; Be provided with multiple metering device in described cabinet, be arranged in described power distribution cabinet, the metering device output of each described metering device is used for output power information;
A harvester, comprising: harvester output, is connected respectively with the metering device input of each described metering device, for sending acquisition instructions to each described metering device input; Harvester input, is connected with the described metering device output of each described metering device, for gathering the described power information of described metering device;
One lightning protection power supply circuits, described multiple metering device is connected with lightning protection power supply circuits;
A communicator, is connected with described harvester, is sent to external equipment for the power information gathered by described harvester.
2. lightning protection power distribution cabinet according to claim 1, it is characterized in that: described lightning protection power supply circuits comprise: lightning protection circuit, indicating equipment and output unit, wherein, the input of described lightning protection circuit is connected with power-supply system, the output of described lightning protection circuit is connected with output unit, for eliminating the lightning surge voltage to being entered by power-supply system;
The first order vent unit, second level choke unit and the third level clamping unit that are connected successively is comprised in described lightning protection circuit;
Described indicating equipment is connected with lightning protection circuit, for each phase current in described lightning protection circuit Nei Mei road, voltage being shown;
The output of described output unit is connected with metering device, for powering to described metering device.
3. lightning protection power distribution cabinet according to claim 1, is characterized in that: described cabinet door is provided with shutter, and Open Side Down for described shutter, establishes gauze in shutter.
4. lightning protection power distribution cabinet according to claim 1, is characterized in that: described cabinet inside is provided with lighting device, and described lighting device comprises at least one lamp body and a push switch, and lamp body is connected with push switch.
5. lightning protection power distribution cabinet according to claim 1, it is characterized in that: below described power distribution cabinet, be provided with the through hole for threading and insulation cushion, it is characterized in that, an earth connection is set up in the bottom of described cabinet, described earth connection is connected to described bottom of cabinet bulk, is used for the electrostatic on power distribution cabinet being imported in time ground release.
6. lightning protection power distribution cabinet according to claim 5, is characterized in that: described earth connection has been set up a unilateral diode, the positive terminal of described unilateral diode is connected with distribution enclosure box.
7. lightning protection power distribution cabinet according to claim 1, it is characterized in that: the cabinet door back side is provided with the interlayer of the above-below direction parallel with cabinet door, this interlayer and cabinet door form the sandwich passage of above-below direction, the upper port of described sandwich passage is provided with blower fan, and this fan outlet is connected in series with the upper port of described sandwich passage.
8. lightning protection power distribution cabinet according to claim 1, it is characterized in that: described cabinet door is followed successively by internal layer, middle level and skin from inside to outside, described internal layer is from inside to outside for being respectively equipped with radiation protective layer and sealant, described middle level is the double-decker of leakproof electric layer and fireprotection layer composition, skin is high-strength insulating armour, and described cabinet outdoors portion is also provided with insulation antidetonation frame.
9. lightning protection power distribution cabinet according to claim 1, it is characterized in that: described cabinet is provided with Intelligent indicating device, described Intelligent indicating device comprises:
Switch, indicating device and warning device, wherein,
Described switch, for starting or stoping described indicating device;
Described indicating device, is connected with described switch, after starting at described indicating device, indicate power equipment to be in electriferous state;
Described warning device, is connected with described switch, comprises: heat sensor, alarm distance adjusting device and alarm, wherein,
Described alarm distance adjusting device, for arranging alarm distance;
Described heat sensor, for detecting the distance of thermal source and described power equipment;
Described alarm, is connected between described heat sensor and described alarm distance adjusting device, for when the distance of thermal source and described power equipment is less than described alarm distance, sends the alarm of described charged electric power apparatus.
10. lightning protection power distribution cabinet according to claim 1, is characterized in that: be also provided with in described cabinet:
Humidity sensor, is arranged in described cabinet to detect the real-time humidity of the inside of described cabinet;
Comparator, is connected with described humidity sensor with more described real-time humidity and default humidity;
Dehumidifier, is connected with described comparator, to dehumidify when described real-time humidity is greater than described default humidity.
CN201520770412.3U 2015-09-30 2015-09-30 Lightning -protection power distribution cabinet Active CN205104777U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105244770A (en) * 2015-09-30 2016-01-13 国家电网公司 Lightning-protection power distribution cabinet
CN109861193A (en) * 2018-12-29 2019-06-07 樊嵩 A kind of earth leakage protecting method and its system of electric cabinet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105244770A (en) * 2015-09-30 2016-01-13 国家电网公司 Lightning-protection power distribution cabinet
CN109861193A (en) * 2018-12-29 2019-06-07 樊嵩 A kind of earth leakage protecting method and its system of electric cabinet

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