CN101325334A - Microcomputer type electric power engineering DC power supply cabinet - Google Patents
Microcomputer type electric power engineering DC power supply cabinet Download PDFInfo
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- CN101325334A CN101325334A CNA2008100685287A CN200810068528A CN101325334A CN 101325334 A CN101325334 A CN 101325334A CN A2008100685287 A CNA2008100685287 A CN A2008100685287A CN 200810068528 A CN200810068528 A CN 200810068528A CN 101325334 A CN101325334 A CN 101325334A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a microcomputer-type power engineering direct-current power cabinet which is used in switching rooms of 10-550kV transformer substations, power plants, high-rise buildings, residential districts, etc. The microcomputer-type power engineering direct-current power cabinet includes an outer shell and a control system mounted in the outer shell. Two alternating current power incoming line protecting and switching units in the control system include two alternating current power inputs; each alternating current power input is respectively connected in series with a switch and a contactor; the two alternating current power inputs are combined into one after being connected with the contactors and are input to a high-frequency rectifying unit; the high-frequency rectifying unit inputs into an accumulator unit; a control unit signal output end is connected with a control end of the high-frequency rectifying unit; and the power end of the accumulator unit is connected with an output end. The microcomputer-type power engineering direct-current power cabinet adopts the two alternating current power incoming lines, thereby greatly reducing failure rate; the soft-switching technique is adopted, thereby improving the work efficiency of the high-frequency rectifying unit to 93% and saving energy; and a high-frequency rectifying module is amounted in the system in a hot plug manner, so that examination and repair are simple and easy.
Description
Affiliated technical field
The present invention discloses a kind of power cabinet, particularly a kind of microcomputer type electric power engineering DC power supply cabinet that uses in the switchgear house of 10～550kV transformer station, power plant, skyscraper, residential quarters etc. that is applicable to.
Background technology
DC power cabinet is widely used in the switchgear house of 10～550kV transformer station, power plant, skyscraper, residential quarters etc. as the operation of high-voltage switch gear, relaying protection, automatics etc., control power supply and emergency lighting power supply, and small-sized self-supply power plant etc.Adopt one the tunnel to exchange inlet wire in the DC power cabinet of the prior art, the possibility that breaks down is than higher, DC power supply of the prior art adopts traditional phase control-type rectification module, inefficiency has only 85%, and energy waste is many, rectification module in the DC power cabinet of the prior art adopts the fixed installation mode to install, when system breaks down, can only have a power failure and overhaul, operation inconvenience.
Summary of the invention
Adopt one the tunnel to exchange inlet wire at the above-mentioned DC power cabinet of mentioning of the prior art, the failure rate height, the high-frequency rectification transfer ratio is low, the shortcoming of waste electric energy, the invention provides a kind of new microcomputer type electric power engineering DC power supply cabinet, it adopts two-way AC power inlet wire, the two-way AC power is by respectively by synthetic one tunnel input high-frequency rectification unit behind the switch that is connected in series and the contactor, the control end of high-frequency rectification unit is connected on the signal end of control unit, adopt soft switch technique control high-frequency rectification cell operation, increase work efficiency, secondary battery unit is exported in the high-frequency rectification unit.
The technical scheme that the present invention solves its technical problem employing is: a kind of microcomputer type electric power engineering DC power supply cabinet; comprise shell and installation control system in the enclosure; control system comprises two-way AC power incoming relay-protection and switch unit; control unit; the high-frequency rectification unit; output unit; secondary battery unit; described two-way AC power incoming relay-protection and switch unit comprise the input of two-way AC power; the AC power input of every road is connected with the switch and the contactor of series connection respectively; the input of two-way AC power synthesizes one the tunnel behind contactor; and input to the high-frequency rectification unit; secondary battery unit is exported in the high-frequency rectification unit; the control unit signal output part is connected with the control end of high-frequency rectification unit, and the power end of secondary battery unit is connected with output unit.
The technical scheme that the present invention solves its technical problem employing further comprises:
Described high-frequency rectification unit comprises two or more high-frequency rectification modules, many one of the actual required high-frequency rectification module number of high-frequency rectification module ratio control system.
Described output unit comprises that the bus that closes a floodgate and control always feeds out protective circuit breaker; closing a floodgate and controlling bus always feeds out the control signal that protective circuit breaker divides control that two-way power supply signal and one road control unit are arranged, and combined floodgate and control bus always feed out the output of protective circuit breaker output as control system.
Described combined floodgate and control bus always feed out the closing bus bar that is connected with more than a road or a tunnel between the positive pole of protective circuit breaker input and the negative pole and feed out protective circuit breaker.
Described combined floodgate and control bus always feed out the control bus that is connected with more than a road or a tunnel between the signal output part of the negative pole of protective circuit breaker input and control unit and feed out protective circuit breaker.
Be connected with direct current on the described high-frequency rectification unit output and feed out protective circuit breaker.
Be connected with battery charge and feed out protective circuit breaker on the described secondary battery unit input.
Be connected with Surge Protector on the output of described two-way AC power incoming relay-protection and switch unit.
Be connected with temperature sensor on the described control unit signal end.
Described high-frequency rectification module adopts inserting mode to be connected with system.
The invention has the beneficial effects as follows: the present invention adopts two-way to exchange inlet wire, greatly reduce failure rate, adopt soft switch technique, the operating efficiency of high-frequency rectification unit is brought up to 93%, saved the energy, the high-frequency rectification module adopts the hot plug mode to be installed in the system, and quantity is installed needs quantity to Duo one than system, when having a high-frequency rectification module to break down in the energy assurance system, system's energy operate as normal, and maintenance is easily simple.
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is system works circuit theory diagrams of the present invention.
Embodiment
Present embodiment is the preferred embodiment for the present invention, and other all its principles are identical with present embodiment or approximate with basic structure, all within protection range of the present invention.
Please referring to accompanying drawing, circuit theory diagrams of the present invention as shown in the figure, the present invention mainly is made of two-way AC power incoming relay-protection and switch unit, control unit, high-frequency rectification unit, output unit, secondary battery unit several sections.
Two-way AC power incoming relay-protection and switch unit comprise two-way AC power input, be in (supply power voltage is normal) under the normal condition in first via power supply, and phase sequence are correct, normal power supply breaker closing and the second tunnel power supply circuit breaker disconnects.When normal power supply decompression, under-voltage, overvoltage, phase shortage, first via power supply circuit breaker disconnects, and control unit can be controlled alarm unit and send alarm signal.When dual power supply automatic switching device judges that the second road power supply is normal, the second tunnel power supply breaker closing then, alarm signal can automatically terminate.Then the second tunnel power supply circuit breaker disconnection during first via service restoration.First via power supply breaker closing puts into operation, promptly returns normal operating condition at last.
Be connected with Surge Protector on the output after the input of two-way AC power is synthetic, can guarantee effectively that the present invention bears the peak voltage interference performance of electrical network, protection the present invention is not damaged when receiving that thunderbolt waits instantaneous pressure.
Two-way AC power incoming relay-protection and switch unit are exported to the high-frequency rectification unit; the high-frequency rectification unit is made up of two or more high-frequency rectification modules; the high-frequency rectification module adopts the hot plug mode to be connected with the present invention; when the high-frequency rectification module damage, can take off easily and overhaul.The quantity of high-frequency rectification module is Duoed one than the actual quantity that system among the present invention needs, the quantity of high-frequency model depends on the ratio of the rated operational current of the rated operational current of microcomputer type electric power engineering DC power supply cabinet and high-frequency model, actual usage quantity is rated operational current+1 of the rated operational current/high-frequency model of microcomputer type electric power engineering DC power supply cabinet, abbreviate N+1 Hot Spare (N is total usage quantity of high-frequency model actual needs) as, when any high-frequency rectification module failure can assurance be arranged in the system, system can operate as normal.The control end of each high-frequency rectification module all is connected with the control output end of control unit, and the high-frequency rectification module adopts soft switch technique, the transfer ratio of high-frequency rectification module can be brought up to 93%, has saved the energy, has improved transfer ratio.
In the present embodiment, control unit adopts advanced single-chip microcomputer or adopts PLC is the core original paper, be connected with temperature sensor on the signal end of control unit, be used for the induced environment temperature, also provide RS232 interface, RS485 interface and remote alarm interface on the control unit, be used for and operations such as PERCOM peripheral communication and warning.
Be in series with a direct current on the high-frequency rectification module output and feed out protective circuit breaker Q1, when high-frequency rectification module output current was excessive, direct current fed out protective circuit breaker Q1 and disconnects, with protection system safety.The high-frequency rectification module is exported to secondary battery unit; be in series with battery charge on the input of secondary battery unit and feed out protective circuit breaker Q2; when charge in batteries is full of or charging current when excessive, battery charge and feed out protective circuit breaker Q2 and disconnect is with protection battery and system safety.Being connected with on the secondary battery unit output closes a floodgate and control bus always feeds out protective circuit breaker; combined floodgate and control bus always feed out protective circuit breaker and have controlled three road signals respectively; wherein two-way is the both positive and negative polarity of secondary battery unit output, and another road is one tunnel control signal of control unit output.Combined floodgate and control bus always feed out protective circuit breaker output and are divided into two-way; one the tunnel is power positive cathode; give externally fed; be connected with one or more closing bus bar on the power positive cathode and feed out protective circuit breaker; be used to protect each road closing bus bar; another road is the control signal of power cathode and control unit output, is connected with one or more control bus on the control signal of power cathode and control unit output and feeds out protective circuit breaker.
Claims (10)
1; a kind of microcomputer type electric power engineering DC power supply cabinet; comprise shell and installation control system in the enclosure; it is characterized in that: described control system comprises two-way AC power incoming relay-protection and switch unit; control unit; the high-frequency rectification unit; output unit; secondary battery unit; described two-way AC power incoming relay-protection and switch unit comprise the input of two-way AC power; the AC power input of every road is connected with the switch and the contactor of series connection respectively; the input of two-way AC power synthesizes one the tunnel behind contactor; and input to the high-frequency rectification unit; secondary battery unit is exported in the high-frequency rectification unit; the control unit signal output part is connected with the control end of high-frequency rectification unit, and the power end of secondary battery unit is connected with output unit.
2, microcomputer type electric power engineering DC power supply cabinet according to claim 1, it is characterized in that: described high-frequency rectification unit comprises two or more high-frequency rectification modules, many one of the actual required high-frequency rectification module number of high-frequency rectification module ratio control system.
3, microcomputer type electric power engineering DC power supply cabinet according to claim 1; it is characterized in that: described output unit comprises that the bus that closes a floodgate and control always feeds out protective circuit breaker; closing a floodgate and controlling bus always feeds out the control signal that protective circuit breaker divides control that two-way power supply signal and one road control unit are arranged, and combined floodgate and control bus always feed out the output of protective circuit breaker output as control system.
4, microcomputer type electric power engineering DC power supply cabinet according to claim 3 is characterized in that: described combined floodgate and control bus always feed out the closing bus bar that is connected with more than a road or a tunnel between the positive pole of protective circuit breaker input and the negative pole and feed out protective circuit breaker.
5, microcomputer type electric power engineering DC power supply cabinet according to claim 3 is characterized in that: described combined floodgate and control bus always feed out the control bus that is connected with more than a road or a tunnel between the signal output part of the negative pole of protective circuit breaker input and control unit and feed out protective circuit breaker.
6, according to any described microcomputer type electric power engineering DC power supply cabinet in the claim 1 to 5, it is characterized in that: be connected with direct current on the described high-frequency rectification unit output and feed out protective circuit breaker.
7, according to any described microcomputer type electric power engineering DC power supply cabinet in the claim 1 to 5, it is characterized in that: be connected with battery charge and feed out protective circuit breaker on the described secondary battery unit input.
8, according to any described microcomputer type electric power engineering DC power supply cabinet in the claim 1 to 5, it is characterized in that: be connected with Surge Protector on the output of described two-way AC power incoming relay-protection and switch unit.
9, according to any described microcomputer type electric power engineering DC power supply cabinet in the claim 1 to 5, it is characterized in that: be connected with temperature sensor on the described control unit signal end.
10, according to any described microcomputer type electric power engineering DC power supply cabinet in the claim 2, it is characterized in that: described high-frequency rectification module adopts inserting mode to be connected with system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100685287A CN101325334A (en) | 2008-07-17 | 2008-07-17 | Microcomputer type electric power engineering DC power supply cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100685287A CN101325334A (en) | 2008-07-17 | 2008-07-17 | Microcomputer type electric power engineering DC power supply cabinet |
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| CN101325334A true CN101325334A (en) | 2008-12-17 |
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| CNA2008100685287A Pending CN101325334A (en) | 2008-07-17 | 2008-07-17 | Microcomputer type electric power engineering DC power supply cabinet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475066A (en) * | 2013-09-27 | 2013-12-25 | 瑞昌哥尔德发电设备(无锡)制造有限公司 | Uninterrupted power supply system |
| CN104319867A (en) * | 2014-08-28 | 2015-01-28 | 合肥联信电源有限公司 | Battery supply circuit of high-power emergency power supply |
| CN106602451A (en) * | 2016-06-27 | 2017-04-26 | 河南平芝高压开关有限公司 | Power cabinet |
| CN107046325A (en) * | 2016-02-05 | 2017-08-15 | 中国船舶重工集团公司第七�三研究所 | A kind of rack installs the DC power-supply system of lead-acid batteries |
-
2008
- 2008-07-17 CN CNA2008100685287A patent/CN101325334A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475066A (en) * | 2013-09-27 | 2013-12-25 | 瑞昌哥尔德发电设备(无锡)制造有限公司 | Uninterrupted power supply system |
| CN104319867A (en) * | 2014-08-28 | 2015-01-28 | 合肥联信电源有限公司 | Battery supply circuit of high-power emergency power supply |
| CN104319867B (en) * | 2014-08-28 | 2016-08-17 | 合肥联信电源有限公司 | High-power emergency power supply battery feed circuit |
| CN107046325A (en) * | 2016-02-05 | 2017-08-15 | 中国船舶重工集团公司第七�三研究所 | A kind of rack installs the DC power-supply system of lead-acid batteries |
| CN106602451A (en) * | 2016-06-27 | 2017-04-26 | 河南平芝高压开关有限公司 | Power cabinet |
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Open date: 20081217 |