CN105515177A - Switch cabinet with internal power supply module for electric power system - Google Patents
Switch cabinet with internal power supply module for electric power system Download PDFInfo
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- CN105515177A CN105515177A CN201510890565.6A CN201510890565A CN105515177A CN 105515177 A CN105515177 A CN 105515177A CN 201510890565 A CN201510890565 A CN 201510890565A CN 105515177 A CN105515177 A CN 105515177A
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- 238000005070 sampling Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H02J5/005—
-
- 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
-
- H02J7/022—
-
- H02J7/027—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a switch cabinet with an internal power supply module for an electric power system. The switch cabinet comprises a DC voltage module for generating DC voltage output, and the DC voltage module takes electricity from a bus end of the switch cabinet. The DC voltage module comprises: a mutual inductor, a charge management unit and a DC voltage output unit, wherein the mutual inductor is suitable for taking electricity from the bas end of the switch cabinet and is connected with a rectifier filter unit, and the charge management unit is suitable for controlling charge/discharge for a storage battery. The internal direct-current voltage module provides corresponding DC voltage to meet the requirements of relevant instruments and meters in the switch cabinet on normal operation, charge and discharge are controlled by an MCU (micro-control unit), over-charge of the storage battery is avoided, the service life of the storage battery is effectively prolonged, normal operation of the needed instruments and meters in power-off maintenance is realized by the aid of the storage battery, and an external power supply is omitted.
Description
Technical field
The invention belongs to electric power project engineering field, particularly relate to a kind of in establish the switch cubicle of supply module.
Background technology
In electric power system, ring main unit is used in a large number in electric power system, but without AC/220V power supply in ring main unit, cause many electrical instrumentations cannot normal power supply, great majority all use CT (CurrentTransformer, current transformer) power taking is as Power supply, and once primary current is too small, CT electricity taking coil to instrument normal power supply, cannot make instrument cisco unity malfunction, display, set-up function all cannot use, and give operation, overhaul and bring unnecessary trouble; More cannot drive the work of pertinent instruments, instrument, such as: cable head temperature on-Line Monitor Device and misoperation prevention locking device for ring main unit.A kind of switch cubicle power supply unit is provided so necessary, to solve the Related Technical Issues of the power supply run into when power-off is overhauled, namely, DC power supply is provided, detect with the illumination of satisfied scene and misoperation prevention locking device for ring main unit unblock, cable head temperature, and facilitate field service to operate, on the basis that direct voltage is provided, produce alternating current to meet the needs of specific occasion to alternating voltage.
Summary of the invention
The technical problem that the present invention first will solve is to provide a kind of switch cubicle being suitable for DC-voltage supply.
The technical problem that the present invention second will solve is on galvanic basis, generates three-phase alternating current.
In order to solve primary technical problem, the invention provides a kind of switch cubicle, comprising, one is suitable for the direct voltage module producing direct voltage output, and this direct voltage module is from the bus end power taking of described switch cubicle.
Further, in order to when dump, also can provide instrument, instrument normal direct voltage, described direct voltage module comprises: the instrument transformer being suitable for the bus end power taking from described switch cubicle, this instrument transformer is connected with a rectification filtering unit, be suitable for Charge Management unit storage battery being carried out to charge/discharge control, direct voltage output unit; Wherein, described Charge Management unit comprises: voltage detection unit, and MCU unit is provided with the charging input end of the first switching tube, and this charging input end is connected with described rectification filtering unit output, is provided with the electric discharge output of second switch pipe; Described direct voltage output unit comprises: the first input channel be connected with described electric discharge output, and this first input channel is suitable for the accumulator DC pressure receiving the output of described Charge Management unit; The second input channel be connected with described rectification filtering unit output; First, second input channel described is connected with a DC voltage booster circuit respectively, and this DC voltage booster circuit is suitable for producing a corresponding VD according to the direct voltage of input; Described MCU unit is suitable for controlling described first switching tube, the second input channel conducting, and when described voltage detection unit is after detection charge in batteries, then controls described first switching tube and disconnect; When after described bus power-off, then control described second input channel disconnect, and second switch pipe, the first input channel conducting.Wherein, by described MCU unit to the control of the first switching tube, storage battery can be prevented to be in the state of overcharging.
Further, in order to solve the second technical problem, that is, solve the problem that individual instruments, instrument or specific occasion need AC power.
Switch cubicle of the present invention also comprises: a SVPWM converter unit, and this SVPWM converter unit is connected with the output of described direct voltage module.
Described SVPWM converter unit comprises: three-phase inverter, this three-phase inverter is controlled by a DSP, the DC side of this three-phase inverter, AC are respectively equipped with direct current, alternating voltage current detection circuit, and described direct current, alternating voltage current detection circuit are connected with described DSP;
The method of work of above-mentioned switch cubicle, comprise the method that this DSP produces SVPWM modulation signal, it comprises: set up a three-phase static coordinate system according to its axis, from
direction respectively is I, II, III, IV, V, VI sector counterclockwise;
Required reference voltage vector
relevant voltage vector T action time in each sector
1, T
2:
Wherein, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively; T
sbe a sampling period, V
a, V
bfor required reference voltage vector
in three-phase static coordinate system
projection on direction, V
dcfor DC bus-bar voltage.
T
1, T
2after assignment, also to judge it, work as T
1+ T
2>T
s, then T is got
1=T
1ts/ (T
1+ T
2), T
2=T
2ts/ (T
1+ T
2)
Finally, adopt DSP inside to have hardware to realize, as required, the SVPWM of five sections or seven segmentations can be selected.
Further, the method for described DSP generation SVPWM modulation signal also comprises:
Judge required reference voltage vector
in the step of respective sectors, this step comprises:
If sector discriminant: N=A+2B+4C;
Wherein, V
a+ 2V
b> 0 A=1, otherwise A=0;
V
a-V
b> 0, then B=1, otherwise B=0;
2V
a+ V
b< 0, then C=1, otherwise C=0;
Judge according to above-mentioned formula the value determining corresponding A, B, C, substitute into described sector discriminant to obtain required reference voltage vector
sector, place, that is, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively.
Compared with prior art, tool of the present invention has the following advantages: the direct voltage module of establishing in (1) the present invention passes through provides corresponding direct voltage to meet the normal work of pertinent instruments in switch cubicle, instrument; (2) by MCU unit controls charging and discharging, avoid the phenomenon occurring accumulator super-charge, effective prolonging service life of battery, and by storage battery to realize power-off maintenance time required instrument, instrument normally work, without the need at external power supply; (3) add SVPWM converter unit at DC output end, realize direct current and the conversion exchanged, the conversion between storage battery and three-phase alternating current, enriched voltage output class, also can solve under specific circumstances, the technical problem of three phase mains must be used; (4) modulator approach of SVPWM modulation signal of the present invention simplifies the calculating process of the modulator approach of traditional SVPWM modulation signal, has saved the computing time of DSP, has improve computational accuracy.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
The circuit structure block diagram one of direct voltage module in Fig. 1 switch cubicle of the present invention;
The circuit structure block diagram two of direct voltage module in Fig. 2 switch cubicle of the present invention;
The circuit structure block diagram of direct voltage module and SVPWM converter unit in Fig. 3 switch cubicle of the present invention;
The circuit structure block diagram of Fig. 4 SVPWM converter unit of the present invention;
Fig. 5 voltage space-vector decomposition figure of the present invention;
Wherein, bus 1, instrument transformer 2.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
Embodiment 1
See Fig. 1, a kind of switch cubicle, comprises, and one is suitable for the direct voltage module producing direct voltage output, and this direct voltage module is from the bus 1 end power taking of described switch cubicle.
This direct voltage module can be the power supply of misoperation prevention locking device for ring main unit and cable head temperature on-Line Monitor Device; Wherein said misoperation prevention locking device for ring main unit adopts utility model patent " misoperation prevention locking device for ring main unit " Authorization Notice No. CN202196675.
This direct voltage module produces the direct voltage of 24V or 28V or 220V, also can control direct voltage output according to user.
Embodiment 2
The execution mode of the direct voltage module on embodiment 1 basis, as follows:
See Fig. 2, described direct voltage module comprises: the instrument transformer 2 being suitable for the bus 1 end power taking from described switch cubicle, and this instrument transformer 2 is connected with a rectification filtering unit, is suitable for Charge Management unit storage battery being carried out to charge/discharge control, direct voltage output unit;
Wherein, described Charge Management unit comprises: voltage detection unit, and MCU unit is provided with the charging input end of the first switching tube, and this charging input end is connected with described rectification filtering unit output, is provided with the electric discharge output of second switch pipe;
Described direct voltage output unit comprises: the first input channel be connected with described electric discharge output, and this first input channel is suitable for the accumulator DC pressure receiving the output of described Charge Management unit; The second input channel be connected with described rectification filtering unit output; First, second input channel described is connected with a DC voltage booster circuit respectively, and this DC voltage booster circuit is suitable for producing a corresponding VD according to the direct voltage of input;
Described MCU unit is suitable for controlling described first switching tube, the second input channel conducting, and when described voltage detection unit is after detection charge in batteries, then controls described first switching tube and disconnect; When after described bus power-off, then control described second input channel disconnect, and second switch pipe, the first input channel conducting.
Described DC voltage booster circuit kind is a lot, such as: application number 201210349199.X title: a kind of technical scheme of direct current-direct current voltage boost circuit.
On the basis of embodiment 1 or 2, the execution mode of SVPWM converter unit, as follows:
See Fig. 3, described switch cubicle also comprises: a SVPWM converter unit, and this SVPWM converter unit is connected with the output of described direct voltage module.
See Fig. 4, described SVPWM converter unit comprises: three-phase inverter, this three-phase inverter is controlled by a DSP, and the DC side of this three-phase inverter, AC are respectively equipped with direct current, alternating voltage current detection circuit, and described direct current, alternating voltage current detection circuit are connected with described DSP;
The method that this DSP produces SVPWM modulation signal comprises: see Fig. 5, set up a three-phase static coordinate system according to its axis, from
direction respectively is I, II, III, IV, V, VI sector counterclockwise; Required reference voltage vector
relevant voltage vector T action time in each sector
1, T
2:
Wherein, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively; T
sbe a sampling period, be the sampling period that described DSP gathers direct current, AC signal, V
a, V
bfor required reference voltage vector
in three-phase static coordinate system
projection on direction, V
dcfor DC bus-bar voltage.
T
1, T
2after assignment, also to judge it, work as T
1+ T
2>T
s, then T is got
1=T
1ts/ (T
1+ T
2), T
2=T
2ts/ (T
1+ T
2).
Finally, realized by dsp program.Wherein, as required, can select the SVPWM of five sections or seven segmentations, DSP can adopt the dsp chip of MC56F8346 or other models all can realize this modulation.
The method that described DSP produces SVPWM modulation signal also comprises:
Judge required reference voltage vector
in the step of respective sectors, this step comprises:
If sector discriminant: N=A+2B+4C;
Wherein, V
a+ 2V
b> 0 A=1, otherwise A=0;
V
a-V
b> 0, then B=1, otherwise B=0;
2V
a+ V
b< 0, then C=1, otherwise C=0;
Judge according to above-mentioned formula the value determining corresponding A, B, C, substitute into described sector discriminant to obtain required reference voltage vector
sector, place, that is, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively.
Wherein, three-phase inverter, two power tube synchronizations of its every phase brachium pontis only have a conducting, and have 8 kinds of on off states to exist like this, its fundamental space vector comprises
the amplitude of six non-zero is
(V
dcfor DC bus-bar voltage).By controlling fundamental space vectorial combination and action time, SVPWM is according to reference voltage vector
carry out rotating operation.V
1, V
2, V
3, V
4, V
5, V
6represent vector respectively
mould, namely have: V
1=V
2=V
3=V
4=V
5=V
6=(2/3) V
dc.
In the modulator approach of SVPWM modulation signal, three-phase system model needs to be transformed in two-phase rest frame:
In formula, V
a, V
b, V
cfor space voltage vector
in three-phase static coordinate system
projection on direction, V
alf, V
betfor reference voltage vector
at two phase coordinate systems
projection on direction, V
sfor
mould, then have:
V
alf=V
s* cos θ (formula 2)
V
bet=V
s* sin θ (formula 3)
Reference voltage vector
adjacent fundamental space Vector modulation can be crossed obtain:
In above formula, T
k, T
k+1for fundamental space vector
at a sampling period T
sin action time.K is vector place sector number, and azimuth θ can be obtained by antitrigonometric function computing in two-phase rest frame.
Judge reference voltage vector
sector, place, analyzes V
alf, V
betrelation, following rule can be obtained, namely judge inequality:
If V
bet> 0, then A=1, otherwise A=0;
If
then B=1, otherwise B=0;
If
then C=1, otherwise C=0;
N=A+2B+4C is differentiated by sector.
Easily know N=3, N=1, N=5, N=4, N=6, N=2 be corresponding I, II, III, IV, V, VI sector respectively.
Work as reference voltage vector
when the Ith sector, fundamental space vector can calculate by through type action time:
Can obtaining of solution:
Work as reference voltage vector
when the IIth sector,
In like manner can deriving the voltage vector action time in other sector, all there is computing as above when needing the vector of synthesis to be positioned at each different sector.By being not difficult to find that they are combinations of some basic times to solving of each sector basic vector operate time.See Fig. 5, required reference voltage vector
projection in three-phase static coordinate system is respectively V
a, V
b, V
c, then have
Obtained by formula (1) and formula (7)
Obtain V
alfand V
betwith V
a, V
bcorresponding relation namely
V
alf=1*V
a+0*V
b=V
a
Judge required reference voltage vector
sector, place, analyzes V
alf, V
betrelation, by V
alf, V
betuse V respectively
a, V
bjudge reference voltage vector
sector, place, substitutes into above-mentioned judgement inequality by formula (9), obtains following rule:
If V
a+ 2V
b> 0 A=1, otherwise A=0;
V
a-V
b> 0, then B=1, otherwise B=0;
2V
a+ V
b< 0, then C=1, otherwise C=0;
According to the value calculating A, B, C, bring N=A+2B+4C into, to determine required reference voltage vector
sector, place, that is, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively.
When required reference voltage vector
when the Ith sector, fundamental space vector can pass through formula (5) and calculate action time, namely formula (9) is substituted into respectively,
When required reference voltage vector
when the IIth sector, formula (9) is substituted into formula (6) respectively,
Wherein, T
sbe a sampling period, V
dcfor DC bus-bar voltage.
In like manner can derive the voltage vector action time in other sector, here not in repetition, conclusion is as shown in the table for action time:
Wherein, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively; T
sbe a sampling period, V
a, V
bfor required reference voltage vector
in three-phase static coordinate system
projection on direction, V
dcfor DC bus-bar voltage.
As can be seen here, in the method for whole SVPWM modulation signal, without the need to using V
c, only need V
a, V
bcan modulation operation be met, optimize computing greatly, improve operation efficiency.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (1)
1. a switch cubicle, is characterized in that comprising, and one is suitable for the direct voltage module producing direct voltage output, and this direct voltage module is from the bus end power taking of described switch cubicle;
Described direct voltage module comprises: the instrument transformer being suitable for the bus end power taking from described switch cubicle, and this instrument transformer is connected with a rectification filtering unit, is suitable for Charge Management unit storage battery being carried out to charge/discharge control, direct voltage output unit;
Wherein, described Charge Management unit comprises: voltage detection unit, and MCU unit is provided with the charging input end of the first switching tube, and this charging input end is connected with described rectification filtering unit output, is provided with the electric discharge output of second switch pipe;
One SVPWM converter unit, this SVPWM converter unit is connected with the output of described direct voltage module;
Described SVPWM converter unit comprises: three-phase inverter, this three-phase inverter is controlled by a DSP, the DC side of this three-phase inverter, AC are respectively equipped with direct current, alternating voltage current detection circuit, and described direct current, alternating voltage current detection circuit are connected with described DSP;
The method that this DSP produces SVPWM modulation signal comprises: set up a three-phase static coordinate system according to its axis, from
direction respectively is I, II, III, IV, V, VI sector counterclockwise;
Required reference voltage vector
relevant voltage vector T action time in each sector
1, T
2:
Wherein, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively; T
sbe a sampling period, V
a, V
bfor required reference voltage vector
in three-phase static coordinate system
projection on direction, V
dcfor DC bus-bar voltage;
The method that described DSP produces SVPWM modulation signal also comprises:
Judge required reference voltage vector
in the step of respective sectors, this step comprises:
If sector discriminant: N=A+2B+4C;
Wherein, V
a+ 2V
b> 0 A=1, otherwise A=0;
V
a-V
b> 0, then B=1, otherwise B=0;
2V
a+ V
b< 0, then C=1, otherwise C=0;
V
a, V
bsubstitute into above-mentioned formula respectively, to obtain the value of corresponding A, B, C, substitute into described sector discriminant to obtain required reference voltage vector
sector, place, that is, N=3, N=1, N=5, N=4, N=6, N=2 corresponding I, II, III, IV, V, VI sector respectively.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310129545.8A CN103166310B (en) | 2013-04-15 | 2013-04-15 | Switch cubicle and the method for work thereof of supply module is established in a kind of |
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CN201310129545.8A Division CN103166310B (en) | 2013-04-15 | 2013-04-15 | Switch cubicle and the method for work thereof of supply module is established in a kind of |
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CN105515177A true CN105515177A (en) | 2016-04-20 |
Family
ID=48589145
Family Applications (9)
Application Number | Title | Priority Date | Filing Date |
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CN201510890565.6A Withdrawn CN105515177A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet with internal power supply module for electric power system |
CN201510889750.3A Withdrawn CN105429188A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet for power system |
CN201510891041.9A Withdrawn CN105281410A (en) | 2013-04-15 | 2013-04-15 | Working method of switch cabinet for electric power system |
CN201510889558.4A Withdrawn CN105375618A (en) | 2013-04-15 | 2013-04-15 | Working method of switchgear for electric power system |
CN201510889542.3A Withdrawn CN105322574A (en) | 2013-04-15 | 2013-04-15 | Working method of switch cabinet internally provided with power supply module and used for power system |
CN201510889599.3A Withdrawn CN105322575A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet used for power system |
CN201310129545.8A Active CN103166310B (en) | 2013-04-15 | 2013-04-15 | Switch cubicle and the method for work thereof of supply module is established in a kind of |
CN201510890414.0A Withdrawn CN105515176A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet for power system and working method thereof |
CN201510891292.7A Withdrawn CN105529819A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet with built-in power supply module for power system |
Family Applications After (8)
Application Number | Title | Priority Date | Filing Date |
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CN201510889750.3A Withdrawn CN105429188A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet for power system |
CN201510891041.9A Withdrawn CN105281410A (en) | 2013-04-15 | 2013-04-15 | Working method of switch cabinet for electric power system |
CN201510889558.4A Withdrawn CN105375618A (en) | 2013-04-15 | 2013-04-15 | Working method of switchgear for electric power system |
CN201510889542.3A Withdrawn CN105322574A (en) | 2013-04-15 | 2013-04-15 | Working method of switch cabinet internally provided with power supply module and used for power system |
CN201510889599.3A Withdrawn CN105322575A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet used for power system |
CN201310129545.8A Active CN103166310B (en) | 2013-04-15 | 2013-04-15 | Switch cubicle and the method for work thereof of supply module is established in a kind of |
CN201510890414.0A Withdrawn CN105515176A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet for power system and working method thereof |
CN201510891292.7A Withdrawn CN105529819A (en) | 2013-04-15 | 2013-04-15 | Switch cabinet with built-in power supply module for power system |
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CN103633862A (en) * | 2013-10-08 | 2014-03-12 | 江苏有能新能源有限公司 | SVPWM frequency conversion device reducing intermediate operation and modulation method thereof |
CN106160207A (en) * | 2016-07-26 | 2016-11-23 | 四川汉舟电气股份有限公司 | A kind of automatic monitor-type high-tension switch cabinet |
CN106058649A (en) * | 2016-07-26 | 2016-10-26 | 四川汉舟电气股份有限公司 | Draw-out type switchgear |
CN106291294A (en) * | 2016-11-04 | 2017-01-04 | 广东电网有限责任公司电力科学研究院 | A kind of SF6ring main unit shelf depreciation decomposition components assay device |
CN111987790B (en) * | 2020-08-11 | 2024-02-20 | 云南电网有限责任公司丽江供电局 | Get electric installation in looped netowrk cabinet |
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CN1278468C (en) * | 2002-03-25 | 2006-10-04 | 厦门协成实业有限公司 | Method for distributing DC power source and devices |
CN100481703C (en) * | 2002-06-13 | 2009-04-22 | 艾默生网络能源有限公司 | Power supply converter with rectification/inversion switching function |
DE102006050289B4 (en) * | 2006-10-23 | 2015-11-12 | Rittal Gmbh & Co. Kg | Power supply means |
CN101567569A (en) * | 2008-04-25 | 2009-10-28 | 华硕电脑股份有限公司 | Switched power supply and electronic device applying same |
JP4783454B2 (en) * | 2009-11-30 | 2011-09-28 | 株式会社東芝 | Power supply device, system, and charge / discharge control method |
CN202513832U (en) * | 2012-04-19 | 2012-10-31 | 天津市易控科技发展有限公司 | Space vector pulse width modulation (SVPWM) frequency conversion device based on digital signal processor (DSP) |
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2013
- 2013-04-15 CN CN201510890565.6A patent/CN105515177A/en not_active Withdrawn
- 2013-04-15 CN CN201510889750.3A patent/CN105429188A/en not_active Withdrawn
- 2013-04-15 CN CN201510891041.9A patent/CN105281410A/en not_active Withdrawn
- 2013-04-15 CN CN201510889558.4A patent/CN105375618A/en not_active Withdrawn
- 2013-04-15 CN CN201510889542.3A patent/CN105322574A/en not_active Withdrawn
- 2013-04-15 CN CN201510889599.3A patent/CN105322575A/en not_active Withdrawn
- 2013-04-15 CN CN201310129545.8A patent/CN103166310B/en active Active
- 2013-04-15 CN CN201510890414.0A patent/CN105515176A/en not_active Withdrawn
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CN105322574A (en) | 2016-02-10 |
CN103166310B (en) | 2015-12-02 |
CN105429188A (en) | 2016-03-23 |
CN105281410A (en) | 2016-01-27 |
CN105515176A (en) | 2016-04-20 |
CN105529819A (en) | 2016-04-27 |
CN105322575A (en) | 2016-02-10 |
CN105375618A (en) | 2016-03-02 |
CN103166310A (en) | 2013-06-19 |
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