CN111293593A - Power control cabinet - Google Patents
Power control cabinet Download PDFInfo
- Publication number
- CN111293593A CN111293593A CN202010108630.6A CN202010108630A CN111293593A CN 111293593 A CN111293593 A CN 111293593A CN 202010108630 A CN202010108630 A CN 202010108630A CN 111293593 A CN111293593 A CN 111293593A
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- China
- Prior art keywords
- circuit breaker
- power
- contactor
- contact
- cabinet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/38—Hinged covers or doors
-
- 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
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses a power control cabinet, which comprises a cabinet body and a power cabinet panel, wherein the power cabinet panel is hinged with the cabinet body, a high-voltage circuit breaker, a contactor, a frequency converter, a transformer, a standby lithium battery and a switch control module are arranged in the cabinet body, the high-voltage circuit breaker is connected with an incoming line power supply and is used for generating and transmitting power in a power system, the distribution, play the break-make in electric energy conversion and the consumption, control or guard action, the contactor sets up the right side at high voltage circuit breaker, be used for coming the break-make motor through control coil voltage, the converter sets up the below at high voltage circuit breaker, be used for converting the fixed direct current of magnitude of voltage into the changeable direct current of frequency and voltage effective value, the transformer sets up the top at high voltage circuit breaker, be used for converting the alternating voltage of certain grade into the alternating voltage of the same one kind or several kinds of grades of frequency, reserve lithium cell setting is in the bottom of cabinet body inside. The invention can solve the problem of poor heat dissipation effect when the existing power control cabinet is used, and is convenient to maintain.
Description
Technical Field
The invention relates to the field of power transmission and transformation, in particular to a power control cabinet.
Background
The power control cabinet is an important device in a power transmission and transformation system, is commonly used in low-voltage distribution systems of transformer substations, chemical engineering, metallurgy and the like, a charging device in the traditional control cabinet is exposed, so that the power control cabinet is unsafe for operators, and the device with high voltage electricity can cause injury to the personal safety of the operators once the system fails, so that a safe control cabinet is needed to be provided. The existing control cabinet has the following defects: 1. whether the control cabinet is installed outdoors or indoors, the heat dissipation rate inside the control cabinet is insufficient, so that the temperature inside the control cabinet is high, and some circuits are easy to soften and lap, so that a short circuit phenomenon occurs; 2. the control cabinet has weak electromagnetic interference resistance, is seriously influenced by electromagnetic interference, does not have the function of removing dust, and has inconvenience in use and maintenance.
Disclosure of Invention
The invention aims to solve the technical problem that the power control cabinet can solve the problem of poor heat dissipation effect when the existing power control cabinet is used and is convenient to maintain.
The technical scheme adopted by the invention for solving the technical problems is as follows: construct a power control cabinet, including the cabinet body and power cabinet panel, power cabinet panel with the cabinet body is articulated, the internal high-voltage circuit breaker, contactor, converter, transformer, reserve lithium cell and the on-off control module of being equipped with of cabinet, high-voltage circuit breaker is connected with the inlet wire power, is used for playing break-make, control or guard action in power system electricity generation, transmission of electricity, distribution, electric energy conversion and consumption, the contactor sets up high-voltage circuit breaker's right side, is used for coming the break-make motor through control coil voltage, the converter sets up high-voltage circuit breaker's below, is used for converting the fixed direct current of magnitude of voltage into the variable direct current of frequency and voltage effective value, the transformer sets up high-voltage circuit breaker's top, is used for converting the alternating voltage of certain grade into the alternating voltage of the same one kind or several kinds of grades of frequency, but do not change the capacity of transmission, reserve lithium cell setting is in the bottom of the internal portion of cabinet, be used for providing electric power when needing the operating device during sudden outage or outage, guarantee that equipment can normal operating, switch control module sets up the top of contactor, be used for the operation that the control device power opened and shut down and check out test set, switch control module passes through high voltage circuit breaker with the converter is connected, the converter passes through the contactor is connected the motor.
In the power control cabinet of the invention, the high-voltage circuit breaker is a low-voltage molded case circuit breaker.
In the power control cabinet, a frequency adjustment potentiometer is arranged on a panel of the power cabinet.
In the power control cabinet, a voltmeter and an ammeter are arranged on a panel of the power cabinet, the high-voltage circuit breaker comprises a first circuit breaker and a second circuit breaker, a first live wire is connected with the frequency converter through a first contact of the first circuit breaker, a second live wire is connected with the frequency converter through a second contact of the first circuit breaker and the ammeter in sequence, a third live wire is respectively connected with one end of the frequency converter and the voltmeter and one end of a first contact of the second circuit breaker through a third contact of the first circuit breaker, the other end of the first contact of the second circuit breaker is connected with the switch control module, one end of a second contact of the second circuit breaker is respectively connected with the other end of the voltmeter and the frequency converter, and the other end of the second contact of the second circuit breaker is connected with the switch control module.
In the power control cabinet, a control button is arranged on the panel of the power cabinet, the control button comprises a first lifting button, the contactor comprises a first alternating current contactor and a second alternating current contactor, and the frequency converter is respectively connected with a first contact of the first alternating current contactor and a first contact of the second alternating current contactor through the first lifting button.
In the power control cabinet, a first indicator light, a second indicator light, a third indicator light, a fourth indicator light and a fifth indicator light are arranged on the panel of the power cabinet, one end of the first indicator light, one end of the second contact of the first alternating current contactor and one end of the second contact of the second alternating current contactor are all connected with the other end of the second contact of the second circuit breaker, the other end of the second contact of the first alternating current contactor is connected with one end of the second indicator light, the other end of the second contact of the second alternating current contactor is connected with one end of the third indicator light, the other end of the first indicator light, the other end of the second indicator light and the other end of the third indicator light are all connected with the other end of the first contact of the second circuit breaker, one end of the fourth indicator light and one end of the fifth indicator light are all connected with the frequency converter, the other end of the fourth indicator light and the other end of the fifth indicator light are both connected with the switch control module.
In the power control cabinet, the control button further comprises a second lifting button, a first relay is arranged on the panel of the power cabinet, one end of the second lifting button is connected with the other end of a second contact of the second circuit breaker, and the other end of the second lifting button is connected with the other end of the first contact of the second circuit breaker sequentially through the first relay, a coil of the first alternating current contactor and a coil of the second alternating current contactor.
The power control cabinet has the following beneficial effects: the power cabinet comprises a cabinet body and a power cabinet panel, wherein the power cabinet panel is hinged with the cabinet body, and a high-voltage circuit breaker, a contactor, a frequency converter, a transformer, a standby lithium battery and a switch control module are arranged in the cabinet body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a power control cabinet according to the present invention;
fig. 2 is a schematic diagram of the power control cabinet in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the power control cabinet, the structural schematic diagram of the power control cabinet is shown in fig. 1. Fig. 2 is a schematic diagram of the power control cabinet in this embodiment. As shown in fig. 1 and 2, the power control cabinet is an electrical control cabinet assembly for providing power for the normal operation of the whole equipment, the power control cabinet comprises a cabinet body 1 and a power cabinet panel 2, wherein the power cabinet panel 2 is hinged with the cabinet body 1, a high-voltage circuit breaker 11, a contactor 12, a frequency converter 13, a transformer 14, a standby lithium battery 15 and a switch control module 16 are arranged in the cabinet body 1, the high-voltage circuit breaker 11 is connected with a wire inlet power supply and is used for switching on and off, controlling or protecting in power generation, power transmission, power distribution, electric energy conversion and consumption of an electric power system, the high-voltage circuit breaker 11 is a low-voltage molded case circuit breaker, the low-voltage molded case circuit breaker is connected with the wire inlet power supply, and besides the circuit, the short circuit and overload protection device can protect the short circuit and overload of the circuit and the frequency converter 13, and can cut off the power supply during maintenance, thereby playing the role of switching the power supply and protecting the power control cabinet.
The contactor 12 is arranged on the right side of the high-voltage circuit breaker 11 and is used for switching on/off the motor M by controlling the coil voltage, the frequency converter 13 is arranged below the high-voltage circuit breaker 11 and is used for converting direct current with fixed voltage value into direct current with variable frequency and voltage effective value, the transformer 14 is arranged above the high-voltage circuit breaker 11, and the transformer 14 is static electric equipment and is used for converting alternating current voltage of a certain grade into alternating current voltage of one or more grades with the same frequency without changing the transmission capacity.
The standby lithium battery 15 is arranged at the bottom of the interior of the cabinet body 1 and used for providing power when the equipment needs to be operated during sudden power failure or power failure, so that the normal operation of the equipment can be ensured, but the operation time is not too long. The switch control module 16 is arranged above the contactor 12 and used for controlling the power start-stop of the equipment and the operation of the detection equipment, the switch control module 16 is connected with the frequency converter 13 through the high-voltage circuit breaker 11, and the frequency converter 13 is connected with the motor M through the alternating current contactor 12.
The power control cabinet can safely start and stop the control power cabinet panel 2 to start and stop in a frequency conversion manner, effectively protects the motor M from being started and stopped in a soft manner, prolongs the service life of the motor M, and prevents the impact of large current on a power grid. The power control cabinet can protect the motor M from overvoltage, undervoltage, overcurrent, overheating, phase loss, overload of the frequency converter 13, overload of the motor M, current detection faults, external equipment faults, detection of the contactor 12 and the like, and can adjust the frequency (speed). The invention can solve the problem of poor heat dissipation effect when the existing power control cabinet is used, and is convenient to maintain.
In this embodiment, the power cabinet panel 2 is provided with a frequency adjustment potentiometer, and the keys on the power cabinet panel 2 can conveniently and manually adjust the output frequency of the frequency converter 13 to control the rotation speed of the motor M.
In this embodiment, a voltmeter a and an ammeter V are disposed on the power cabinet panel 2, the high-voltage circuit breaker 11 includes a first circuit breaker QF1 and a second circuit breaker QF2, the first live wire L1 is connected to the frequency converter 13 through a first contact of the first circuit breaker QF1, the second live wire L2 is connected to the frequency converter 13 through a second contact of the first circuit breaker QF1 and the ammeter a in sequence, the third live wire L3 is connected to the frequency converter through a third contact of the first circuit breaker QF1, one end of the voltmeter V and one end of the first contact of the second circuit breaker QF2 are connected to the frequency converter, the other end of the first contact of the second circuit breaker QF2 is connected to the switch control module 16, one end of the second contact of the second circuit breaker QF2 is connected to the other end of the voltmeter V and the frequency converter, and the other end of the second contact of the second circuit breaker QF2 is connected to the switch control module 16.
In this embodiment, the power cabinet panel 2 is provided with a control button 21, the control button 21 includes a first lifting button SA1, the contactor 12 includes a first ac contactor KM1 and a second ac contactor KM2, and the frequency converter 13 is connected with a first contact of the first ac contactor KM1 and a first contact of the second ac contactor KM2 through the first lifting button SA 1.
In this embodiment, a first indicator lamp HL1, a second indicator lamp HL2, a third indicator lamp HL3, a fourth indicator lamp HL4 and a fifth indicator lamp HL5 are arranged on the power cabinet panel 2, wherein one end of the first indicator lamp HL1, one end of the second contact of the first ac contactor KM1 and one end of the second contact of the second ac contactor KM2 are all connected to the other end of the second contact of the second circuit breaker QF2, the other end of the second contact of the first ac contactor KM1 is connected to one end of the second indicator lamp HL2, the other end of the second contact of the second ac contactor KM2 is connected to one end of the third indicator lamp HL3, the other end of the first indicator lamp HL1, the other end of the second indicator lamp 2 and the other end of the third indicator lamp HL3 are all connected to the other end of the first contact of the second circuit breaker QF2, the one end of the fourth indicator lamp HL4 and one end of the fifth indicator lamp HL2 are all connected to the fifth indicator lamp 4616, and the frequency converter module 4616.
Set up voltmeter V, ampere meter A, frequency table and various pilot lamps on the power cabinet panel 2, if: power supply indication, alarm indication, operation indication, power frequency indication and the like, and the monitoring of the input voltage, the output current, the output frequency and various working states of the frequency converter 13 is realized.
In this embodiment, the control button 21 further includes a second lifting button SA2, a first relay KA1 is provided on the power cabinet panel 2, one end of the second lifting button SA2 is connected to the other end of the second contact of the second breaker QF2, and the other end of the second lifting button SA2 is connected to the other end of the first contact of the second breaker QF2 sequentially through the first relay KA1, the coil of the first ac contactor KM1, and the coil of the second ac contactor KM 2.
This power control cabinet has multiple control function, can set up multiple control button and pilot lamp according to the system operating mode on power cabinet panel 2, if: positive rotation, reverse rotation, motor acceleration, motor deceleration, inching positive rotation, inching reverse rotation, manual/automatic, emergency stop, frequency conversion/power frequency, PLC control, touch screen and the like.
The power control cabinet is widely applied to various tap water supply systems in cities and countryside; the constant-pressure control device can be applied to the constant-pressure control of water supply of high-rise buildings, domestic water, fire-fighting water and industrial production working condition closed-loop water; the method can be applied to automatic control of a boiler water replenishing pump and a thermal heating circulating pump; can be applied to farmland irrigation and fountain control; the method can be applied to air conditioning systems and cooling circulating water control; the method can be applied to secondary pressurization control of flow systems of water plants, pump stations and petrochemical industries; the motor control cabinet can be applied to various motor control cabinets which need energy-saving reconstruction or 0-speed starting of a production line.
In short, in this embodiment, the power control cabinet is a power control and distribution device, and the daily protection and maintenance work of the power control cabinet is performed, and the power control cabinet is placed in a shady and cool place or a place with a shelter, so that the service life of the power control cabinet can be prolonged, and the equipment box is strictly prohibited to be opened when the power control cabinet is started, thereby preventing electric shock. The invention can solve the problem of poor heat dissipation effect when the existing power control cabinet is used, and is convenient to maintain.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A power control cabinet is characterized by comprising a cabinet body and a power cabinet panel, wherein the power cabinet panel is hinged with the cabinet body, a high-voltage circuit breaker, a contactor, a frequency converter, a transformer, a standby lithium battery and a switch control module are arranged in the cabinet body, the high-voltage circuit breaker is connected with an incoming line power supply and used for playing on-off, control or protection roles in power generation, power transmission, power distribution, electric energy conversion and consumption of a power system, the contactor is arranged on the right side of the high-voltage circuit breaker and used for switching on and off a motor by controlling coil voltage, the frequency converter is arranged below the high-voltage circuit breaker and used for converting direct current with fixed voltage value into direct current with variable frequency and voltage effective value, the transformer is arranged above the high-voltage circuit breaker and used for converting alternating voltage of a certain grade into alternating voltage of one or more grades with the same frequency, but do not change the capacity of transmission, reserve lithium cell setting is in the bottom of the internal portion of cabinet, be used for providing electric power when needing the operating device during sudden outage or outage, guarantee that equipment can normal operating, switch control module sets up the top of contactor, be used for the operation that the control device power opened and shut down and check out test set, switch control module passes through high voltage circuit breaker with the converter is connected, the converter passes through the contactor is connected the motor.
2. The power control cabinet of claim 1, wherein the high voltage circuit breaker is a low voltage molded case circuit breaker.
3. The power control cabinet according to claim 2, wherein a frequency adjustment potentiometer is provided on the power cabinet panel.
4. The power control cabinet of claim 3, wherein a voltmeter and an ammeter are provided on the power cabinet panel, the high-voltage circuit breaker comprises a first circuit breaker and a second circuit breaker, a first live wire is connected with the frequency converter through a first contact of the first circuit breaker, a second live wire is connected with the frequency converter through a second contact of the first circuit breaker and an ammeter in sequence, a third live wire is respectively connected with one end of the frequency converter and the voltmeter and one end of a first contact of the second circuit breaker through a third contact of the first circuit breaker, the other end of the first contact of the second circuit breaker with switch control module connects, the one end of the second contact of second circuit breaker respectively with the other end and the converter of voltmeter are connected, the other end of the second contact of second circuit breaker with switch control module connects.
5. The power control cabinet according to claim 4, wherein a control button is provided on the power cabinet panel, the control button comprises a first lifting button, the contactor comprises a first AC contactor and a second AC contactor, and the frequency converter is connected with the first contact of the first AC contactor and the first contact of the second AC contactor through the first lifting button respectively.
6. The power control cabinet according to claim 5, wherein a first indicator light, a second indicator light, a third indicator light, a fourth indicator light and a fifth indicator light are arranged on the power cabinet panel, one end of the first indicator light, one end of the second contact of the first AC contactor and one end of the second contact of the second AC contactor are connected with the other end of the second contact of the second circuit breaker, the other end of the second contact of the first AC contactor is connected with one end of the second indicator light, the other end of the second contact of the second AC contactor is connected with one end of the third indicator light, the other end of the first indicator light, the other end of the second indicator light and the other end of the third indicator light are connected with the other end of the first contact of the second circuit breaker, one end of the fourth indicator light and one end of the fifth indicator light are connected with the frequency converter, the other end of the fourth indicator light and the other end of the fifth indicator light are both connected with the switch control module.
7. The power control cabinet according to claim 6, wherein the control button further comprises a second lifting button, a first relay is arranged on the power cabinet panel, one end of the second lifting button is connected with the other end of the second contact of the second circuit breaker, and the other end of the second lifting button is connected with the other end of the first contact of the second circuit breaker sequentially through the first relay, the coil of the first AC contactor and the coil of the second AC contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010108630.6A CN111293593A (en) | 2020-02-21 | 2020-02-21 | Power control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010108630.6A CN111293593A (en) | 2020-02-21 | 2020-02-21 | Power control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111293593A true CN111293593A (en) | 2020-06-16 |
Family
ID=71028381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010108630.6A Pending CN111293593A (en) | 2020-02-21 | 2020-02-21 | Power control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111293593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113003327A (en) * | 2021-03-31 | 2021-06-22 | 广西建工集团建筑机械制造有限责任公司 | PLC (programmable logic controller) control-based high-speed construction elevator electric control system and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100369735B1 (en) * | 1996-03-13 | 2003-03-15 | 리탈 게엠베하 운트 코.카게 | Control box with a device for monitoring and controlling built-in and/of fitted components |
| CN201906654U (en) * | 2010-11-22 | 2011-07-27 | 山东华特磁电科技股份有限公司 | Electric control cabinet for eddy current sorting machine |
| CN207037032U (en) * | 2017-06-01 | 2018-02-23 | 广州中船文冲船坞有限公司 | For testing the device of alternating current generator |
| CN207265915U (en) * | 2017-08-22 | 2018-04-20 | 上海新山田精密刀具有限公司 | A kind of 15kW frequency-conversion control cabinets |
-
2020
- 2020-02-21 CN CN202010108630.6A patent/CN111293593A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100369735B1 (en) * | 1996-03-13 | 2003-03-15 | 리탈 게엠베하 운트 코.카게 | Control box with a device for monitoring and controlling built-in and/of fitted components |
| CN201906654U (en) * | 2010-11-22 | 2011-07-27 | 山东华特磁电科技股份有限公司 | Electric control cabinet for eddy current sorting machine |
| CN207037032U (en) * | 2017-06-01 | 2018-02-23 | 广州中船文冲船坞有限公司 | For testing the device of alternating current generator |
| CN207265915U (en) * | 2017-08-22 | 2018-04-20 | 上海新山田精密刀具有限公司 | A kind of 15kW frequency-conversion control cabinets |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113003327A (en) * | 2021-03-31 | 2021-06-22 | 广西建工集团建筑机械制造有限责任公司 | PLC (programmable logic controller) control-based high-speed construction elevator electric control system and control method thereof |
| CN113003327B (en) * | 2021-03-31 | 2022-12-09 | 广西建工集团建筑机械制造有限责任公司 | PLC (programmable logic controller) control-based high-speed construction elevator electric control system and control method thereof |
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Application publication date: 20200616 |