CN105958414B - Power distribution network medium-voltage line direct current thermal ice-melting circuit and method based on mobile battery energy storage device - Google Patents
Power distribution network medium-voltage line direct current thermal ice-melting circuit and method based on mobile battery energy storage device Download PDFInfo
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- CN105958414B CN105958414B CN201610472517.XA CN201610472517A CN105958414B CN 105958414 B CN105958414 B CN 105958414B CN 201610472517 A CN201610472517 A CN 201610472517A CN 105958414 B CN105958414 B CN 105958414B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 51
- 238000002844 melting Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 13
- 239000004020 conductor Substances 0.000 claims description 18
- 239000005955 Ferric phosphate Substances 0.000 claims description 7
- 229940032958 ferric phosphate Drugs 0.000 claims description 7
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical group [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 7
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 3
- 239000000155 melt Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
Abstract
The present invention relates to a kind of power distribution network medium-voltage line direct current thermal ice-melting circuit based on mobile battery energy storage device, including two way convertor, battery energy storage system, DC converter, AC switch, DC switches；The exchange end of the two way convertor is connected to the power input of the power distribution network medium-voltage line direct current thermal ice-melting circuit through AC switches, the both positive and negative polarity of the DC terminal of the two way convertor and the battery energy storage system simultaneously connects, the input of the DC converter is also with the both positive and negative polarity of the battery energy storage system and connecing, the output end of the DC converter is connected to the output end of the power distribution network medium-voltage line direct current thermal ice-melting circuit through DC switches, to be connected to icing circuit；The battery energy storage system, two way convertor, DC converter, AC switches, DC switches are integrated in semi-trailer movable type compartment.Apparatus of the present invention are simple, are available for emergent direct current thermal ice-melting.
Description
Technical field
The present invention relates to distribution line de-icing technology field, particularly a kind of distribution based on mobile battery energy storage device
Net medium-voltage line direct current thermal ice-melting circuit and method.
Background technology
Ice disaster suffers from serious harm to power network, traffic and crops etc., and ice disaster distribution in China's is wide, and 2008
The rare ice disaster in year brings large area icing to power transformating and supplying facility, and electric network composition is seriously damaged, some areas power supply
It is forced to interrupt, massive losses is brought to national economy.Timely and effectively power transmission and distribution icing circuit is carried out except ice-melt is to reduce
One of important channel of power network icing disaster loss, in view of major network influence is wide, loss of outage is big, for major network ultra-high-tension power transmission line
Thermal ice-melting technology, research is extensively and profoundly carried out in recent years.Due to power distribution network be distributed it is wide, circuit is numerous, length far not
And major network transmission line of electricity, and power distribution network icing circuit is often in alpine region, the complicated topographical conditions of leap, and power distribution network is straight
Stream thermal ice-melting is difficult to obtain the effect of a wide range of ice-melt, and relative deficiency is gone back at present for the ice-melt Study on Measures of power distribution network, main
Distribution ice-melt cooperates, and could will play the effect sent a telegram in reply as early as possible, and carrying out distribution network line ice-melt Study on Measures has reality
Meaning.Existing electric line thermal ice-melting generally considers that power supply is derived from AC network, and existing part is suitable for power distribution network
The deicing device of low-voltage circuit is also contemplated for power supply and is derived from AC system or interim AC power, there is not yet suitable for being derived from direct current
The mid ＆ low-voltage line deicing device of source system.Battery energy storage device can be used for uninterrupted Emergency electricity, peak load shifting, improve platform
A variety of occasions such as area's power supply capacity, with the development of the development of battery energy storage technology, particularly ferric phosphate lithium cell energy storage technology,
So that battery energy density significantly improves relative to traditional lead acid batteries, fairly large battery energy storage system and current transformer system
System compact can be integrated in mobile compartment, realize it is flexible, motor-driven, possess low noise and it is pollution-free the features such as, promote based on battery
The popularization and application of the Mobile energy storage device of energy storage.In uninterrupted Emergency electricity, peak load shifting, improve taiwan area power supply capacity etc.
On the basis of function, the direct current thermal ice-melting function for distribution network line is integrated, loses system power supply when circuit occurs falling bar
When, mobile battery energy storage device can provide emergent direct current thermal ice-melting function, for deep excavation mobile battery energy storage dress
The diversified application function and the engineering application value of lifting device put have positive effect.
The content of the invention
In view of this, the purpose of the present invention is to propose to a kind of power distribution network medium-voltage line based on mobile battery energy storage device
Direct current thermal ice-melting circuit and method, device is simple, is available for emergent direct current thermal ice-melting.
The device of the present invention is realized using following scheme：Line ball in a kind of power distribution network based on mobile battery energy storage device
Road direct current thermal ice-melting circuit, including two way convertor, battery energy storage system, DC converter, AC switch, DC switches；It is described
The exchange end of the two way convertor is connected to the power distribution network medium-voltage line direct current thermal ice-melting circuit through AC switches
Power input, the both positive and negative polarity of the DC terminal of the two way convertor and the battery energy storage system simultaneously connect, the DC converting
Also with the both positive and negative polarity of the battery energy storage system and connecing, the output end of the DC converter switchs the input of device through the DC
The output end of the power distribution network medium-voltage line direct current thermal ice-melting circuit is connected to, to be connected to icing circuit；The battery
Energy-storage system, two way convertor, DC converter, AC switches, DC switches are integrated in semi-trailer movable type compartment.
Further, the battery energy storage system is ferric phosphate lithium cell energy-storage system.
Further, the DC converter is symmetric double bridge arm series direct current converter, including buffer circuit, LC filtering
Circuit and two symmetrical bridge arms.
Further, the DC converter uses IGBT power devices.
Further, the power distribution network medium-voltage line includes power distribution network 10kV, 20kV, 35kV circuit.
The method of the present invention is realized using following scheme：It is a kind of based on described above based on mobile battery energy storage device
Power distribution network medium-voltage line direct current thermal ice-melting circuit method, specifically include following steps：
Step S1：Before ice-melt operation is carried out, the outlet terminal that AC is switched is connected to by 0.4kV exchanges by flexible cable
Power supply, closure AC switches are fully charged by the battery energy storage system；After fully charging, AC switches are disconnected, remove the flexibility
Cable；
Step S2：Icing circuit is out of service, a flexible cable is entered by one by cuprum aluminum wire clamp and connects icing
A, B two-phase incoming end of circuit, the end of A, B two-phase of icing circuit carry out short circuit by shorting stub, and measurement icing circuit is made
The DC impedance of industry circuit, and the output voltage of DC converter output end must not surpass after adjusting loading direct current thermal ice-melting electric current
Cross its maximum operating voltage；
Step S3：One end that one enters a flexible cable is connected to the outlet terminal of DC converter, closed DC switchs,
Start DC converter, the output current value of DC converter is arranged to direct current thermal ice-melting current value；Each loading current
During value stabilization, the temperature rise of icing line access point, short circuit point, observation station is observed, if conductor temperature is more than 40 degree, terminal
Temperature is paid close attention to when exceeding 10 degree of conductor temperature；If conductor temperature persistently raises and more than 15 more than 50 degree, the temperature difference
Loading current is reduced when spending immediately, and is stopped operation；
Step S4：When the input terminal voltage of DC converter is more than output end voltage, the DC converter is started building certainly
Make in buck patterns, the first bridge arm works in buck patterns, and the switching tube S4 of the second bridge arm, which is in, continues cut-off state, passes through control
Make the switching tube S1 of the first bridge arm dutycycle D1, decompression work is realized, input and output voltage relation is：
VO=Vi×D1；
Wherein, VOFor the output end voltage of the DC converter, ViFor the input terminal voltage of the DC converter；
When the input terminal voltage of the DC converter is nearly equal to output end voltage, DC converter works in automatically
Direct mode operation, the switching tube S1 of the first bridge arm, which is in, continues closure state, and the switching tube S4 of the second bridge arm, which is in, persistently ends shape
State, input and output voltage relation are：
VO=Vi×D1；
D1=1；
When the input terminal voltage of the DC converter is less than output end voltage, DC converter works in automatically
Boost patterns, the switching tube S1 of the first bridge arm, which is in, continues closure state, and the second bridge arm works in boost patterns, passes through control
The switching tube S4 of second bridge arm dutycycle D4, boosting work is realized, input and output voltage relation is：
Step S5：After completing A, B two-phase ice-melt operation, DC converter is closed, DC switches is disconnected, three-phase line is carried out
It is substantially discharged, the end short circuit of A, B, C three-phase, the outlet terminal of DC switches is then connected to the flexible cable transfer company of B phases
C phase head ends are connected to, carries out one and enters twice C phase ice-melt operations, closed DC switch, start DC converter, by DC converter
Output current value is arranged to direct current thermal ice-melting current value, and equally in each loading current value stabilization, observation icing circuit connects
The temperature rise of access point, short circuit point, observation station, if conductor temperature exceedes 10 degree of conductor temperature more than 40 degree, terminal temperature
Paid close attention to；Conductor temperature persistently raises more than 50 degree, the temperature difference and then reduces loading current immediately during more than 15 degree, and stops
Only operation；
Step S6：After completing C phase ice-melt operations, the ice-melt operation of three-phase line has been completed, and closes DC converter, is broken
Open DC switch, three-phase line is substantially discharged, remove ice-melt operation wiring, by three-phase line recover to it is out of service when shape
State.
Compared with prior art, battery energy storage system of the invention is using ferric phosphate lithium cell storage electric energy, Bidirectional variable-flow
Device provides charging inlet for ferric phosphate lithium cell energy-storage system, passes through the direct current change for the buck-boost that connected based on symmetric double bridge arm
Parallel operation adjusts DC ice melting current, and two way convertor, ferric phosphate lithium cell energy-storage system, DC converter and switch are integrated to
Semi-trailer movable type compartment.The input of DC converter based on symmetric double bridge arm series connection buck-boost circuits is connected to
The both positive and negative polarity of battery energy storage system, output end is by cable connection to icing circuit, based on symmetric double bridge arm series connection buck-
The DC converter flexible modulation ice-melt output current of boost circuits, meet power distribution network medium-voltage line direct current thermal ice-melting voltage
The wide requirement of working range, it is higher than, less than or equal to battery energy storage system voltage i.e. direct current suitable for direct current thermal ice-melting voltage
Three kinds of operating modes of the input voltage of converter, the DC converter based on symmetric double bridge arm series connection buck-boost use IGBT work(
Rate device, can be opened and disjunction at any time, and control and the method for operation are relatively easy, and output voltage waveforms quality is good, be used
Modular structure, it is easy to the power expansion of device.
Brief description of the drawings
Fig. 1 is two to be in series in the embodiment of the present invention and one enter a direct current thermal ice-melting schematic diagram.
Fig. 2 is two and to enter twice direct current thermal ice-melting schematic diagrams for a string one in the embodiment of the present invention.
Fig. 3 is DC converter schematic diagram in the embodiment of the present invention.
Fig. 4 is that DC converter works in buck mode circuit schematic diagrames in the embodiment of the present invention.
Fig. 5 is that DC converter works in direct mode operation circuit diagram in the embodiment of the present invention.
Fig. 6 is that DC converter works in boost mode circuit schematic diagrames in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
As shown in Figure 1, Figure 2, Figure 3 shows, present embodiments provide in a kind of power distribution network based on mobile battery energy storage device
Line ball road direct current thermal ice-melting circuit, including two way convertor, battery energy storage system, DC converter, AC switch, DC switches；
The exchange end of the two way convertor is connected to the power distribution network medium-voltage line direct current thermal ice-melting electricity through AC switches
The power input on road, the both positive and negative polarity of the DC terminal of the two way convertor and the battery energy storage system simultaneously connect, the direct current
The input of converter is also with the both positive and negative polarity of the battery energy storage system and connecing, and the output end of the DC converter is through the DC
Switch is connected to the output end of the power distribution network medium-voltage line direct current thermal ice-melting circuit, to be connected to icing circuit；It is described
Battery energy storage system, two way convertor, DC converter, AC switches, DC switches are integrated in semi-trailer movable type compartment.
In the present embodiment, the battery energy storage system is ferric phosphate lithium cell energy-storage system.
In the present embodiment, the DC converter is symmetric double bridge arm series direct current converter, including buffer circuit, LC
Filter circuit and two symmetrical bridge arms.
In the present embodiment, the DC converter uses IGBT power devices.
In the present embodiment, the power distribution network medium-voltage line includes power distribution network 10kV, 20kV, 35kV circuit.
The present embodiment additionally provides a kind of based on being pressed in the power distribution network described above based on mobile battery energy storage device
The method of circuit direct current thermal ice-melting circuit, specifically includes following steps：
Step S1：Before ice-melt operation is carried out, the outlet terminal that AC is switched is connected to by 0.4kV exchanges by flexible cable
Power supply, closure AC switches are fully charged by the battery energy storage system；After fully charging, AC switches are disconnected, remove the flexibility
Cable；
Step S2：Icing circuit is out of service, a flexible cable is entered by one by cuprum aluminum wire clamp and connects icing
A, B two-phase incoming end of circuit, the end of A, B two-phase of icing circuit carry out short circuit by shorting stub, and measurement icing circuit is made
The DC impedance of industry circuit, and the output voltage of DC converter output end must not surpass after adjusting loading direct current thermal ice-melting electric current
Cross its maximum operating voltage；
Step S3：One end that one enters a flexible cable is connected to the outlet terminal of DC converter, closed DC switchs,
Start DC converter, the output current value of DC converter is arranged to direct current thermal ice-melting current value；Each loading current
During value stabilization, the temperature rise of icing line access point, short circuit point, observation station is observed, if conductor temperature is more than 40 degree, terminal
Temperature is paid close attention to when exceeding 10 degree of conductor temperature；If conductor temperature persistently raises and more than 15 more than 50 degree, the temperature difference
Loading current is reduced when spending immediately, and is stopped operation；
Step S4：As shown in figure 4, when the input terminal voltage of DC converter is more than output end voltage, the direct current becomes
Parallel operation works in buck patterns automatically, and the first bridge arm works in buck patterns, and the switching tube S4 of the second bridge arm is in lasting cut-off
State, the dutycycle D of the switching tube S1 by controlling the first bridge arm1, decompression work is realized, input and output voltage relation is：
VO=Vi×D1；
Wherein, VOFor the output end voltage of the DC converter, ViFor the input terminal voltage of the DC converter；
As shown in figure 5, when the input terminal voltage of the DC converter is nearly equal to output end voltage, DC converter
Automatic to work in direct mode operation, the switching tube S1 of the first bridge arm, which is in, continues closure state, and the switching tube S4 of the second bridge arm is in
Continue cut-off state, input and output voltage relation is：
VO=Vi×D1；
D1=1；
As shown in fig. 6, when the input terminal voltage of the DC converter is less than output end voltage, DC converter is automatic
Boost patterns are worked in, the switching tube S1 of the first bridge arm, which is in, continues closure state, and the second bridge arm works in boost patterns, leads to
Cross the switching tube S4 of the second bridge arm of control dutycycle D4, boosting work is realized, input and output voltage relation is：
Step S5：After completing A, B two-phase ice-melt operation, DC converter is closed, DC switches is disconnected, three-phase line is carried out
It is substantially discharged, the end short circuit of A, B, C three-phase, the outlet terminal of DC switches is then connected to the flexible cable transfer company of B phases
C phase head ends are connected to, carries out one and enters twice C phase ice-melt operations, closed DC switch, start DC converter, by DC converter
Output current value is arranged to direct current thermal ice-melting current value, and equally in each loading current value stabilization, observation icing circuit connects
The temperature rise of access point, short circuit point, observation station, if conductor temperature exceedes 10 degree of conductor temperature more than 40 degree, terminal temperature
Paid close attention to；Conductor temperature persistently raises more than 50 degree, the temperature difference and then reduces loading current immediately during more than 15 degree, and stops
Only operation；
Step S6：After completing C phase ice-melt operations, the ice-melt operation of three-phase line has been completed, and closes DC converter, is broken
Open DC switch, three-phase line is substantially discharged, remove ice-melt operation wiring, by three-phase line recover to it is out of service when shape
State.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, it should all belong to the covering scope of the present invention.
Claims (4)
1. a kind of method of the power distribution network medium-voltage line direct current thermal ice-melting circuit based on mobile battery energy storage device, its feature
It is：The power distribution network medium-voltage line direct current thermal ice-melting circuit includes two way convertor, battery energy storage system, DC converting
Device, AC switches, DC switches；Through AC switches, to be connected to the power distribution network medium-voltage line straight at the exchange end of the two way convertor
The both positive and negative polarity of the power input of stream thermal ice-melting circuit, the DC terminal of the two way convertor and the battery energy storage system is simultaneously
Connect, the input of the DC converter also with the both positive and negative polarity of the battery energy storage system and connecing, the DC converter it is defeated
Go out the output end that end is connected to the power distribution network medium-voltage line direct current thermal ice-melting circuit through DC switches, covered to be connected to
Ice circuit；The battery energy storage system, two way convertor, DC converter, AC switches, DC switches are integrated in semi-trailer movable type
Compartment；The DC converter is symmetric double bridge arm series direct current converter, including buffer circuit, LC filter circuits and two
Symmetrical bridge arm；It the described method comprises the following steps：
Step S1：Before ice-melt operation is carried out, the outlet terminal that AC is switched is connected to by 0.4kV alternating currents by flexible cable
Source, closure AC switches are fully charged by the battery energy storage system；After fully charging, AC switches are disconnected, remove the flexible electrical
Cable；
Step S2：Icing circuit is out of service, a flexible cable is entered by one by cuprum aluminum wire clamp and connects icing circuit
A, B two-phase incoming end, the end of A, B two-phase of icing circuit passes through shorting stub and carries out short circuit, measures icing circuit homework line
The DC impedance on road, and the output voltage of DC converter output end must not exceed it after adjusting loading direct current thermal ice-melting electric current
Maximum operating voltage；
Step S3：One end that one enters a flexible cable is connected to the outlet terminal of DC converter, closed DC switch, started
DC converter, the output current value of DC converter is arranged to direct current thermal ice-melting current value；Each loading current value is steady
Regularly, the temperature rise of icing line access point, short circuit point, observation station is observed, if conductor temperature is more than 40 degree, terminal temperature
Paid close attention to during more than 10 degree of conductor temperature；If conductor temperature persistently raises more than 50 degree, the temperature difference and during more than 15 degree
Loading current is reduced immediately, and is stopped operation；
Step S4：When the input terminal voltage of DC converter is more than output end voltage, the DC converter works in automatically
Buck patterns, the first bridge arm work in buck patterns, and the switching tube S4 of the second bridge arm, which is in, continues cut-off state, pass through control the
The switching tube S1 of one bridge arm dutycycle D1, decompression work is realized, input and output voltage relation is：
；
Wherein, V0For the output end voltage of the DC converter, ViFor the input terminal voltage of the DC converter；
When the input terminal voltage of the DC converter is nearly equal to output end voltage, DC converter works in straight-through automatically
Pattern, the switching tube S1 of the first bridge arm, which is in, continues closure state, and the switching tube S4 of the second bridge arm, which is in, continues cut-off state, defeated
Entering output voltage relation is：
；
；
When the input terminal voltage of the DC converter is less than output end voltage, DC converter works in boost moulds automatically
Formula, the switching tube S1 of the first bridge arm, which is in, continues closure state, and the second bridge arm works in boost patterns, by controlling the second bridge
The switching tube S4 of arm dutycycle D4, boosting work is realized, input and output voltage relation is：
；
Step S5：After completing A, B two-phase ice-melt operation, DC converter is closed, disconnects DC switches, three-phase line is carried out abundant
Electric discharge, then by the end short circuit of A, B, C three-phase, the flexible cable transfer that the outlet terminal that DC is switched is connected to B phases is connected to
C phase head ends, carry out one and enter twice C phase ice-melt operations, closed DC switch, start DC converter, by the output of DC converter
Current value is arranged to direct current thermal ice-melting current value, equally in each loading current value stabilization, observation icing line access point,
The temperature rise of short circuit point, observation station, if conductor temperature carries out weight when exceeding 10 degree of conductor temperature more than 40 degree, terminal temperature
Point concern；Conductor temperature persistently raises more than 50 degree, the temperature difference and then reduces loading current immediately during more than 15 degree, and stops making
Industry；
Step S6：After completing C phase ice-melt operations, the ice-melt operation of three-phase line has been completed, and closes DC converter, disconnects DC
Switch, three-phase line is substantially discharged, remove ice-melt operation wiring, by three-phase line recover to it is out of service when state.
2. a kind of power distribution network medium-voltage line direct current heating power based on mobile battery energy storage device according to claim 1 melts
The method of ice circuit, it is characterised in that：The battery energy storage system is ferric phosphate lithium cell energy-storage system.
3. a kind of power distribution network medium-voltage line direct current heating power based on mobile battery energy storage device according to claim 1 melts
The method of ice circuit, it is characterised in that：The DC converter uses IGBT power devices.
4. a kind of power distribution network medium-voltage line direct current heating power based on mobile battery energy storage device according to claim 1 melts
The method of ice circuit, it is characterised in that：The power distribution network medium-voltage line includes power distribution network 10kV, 20kV, 35kV circuit.
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| CN107482530A (en) * | 2017-09-20 | 2017-12-15 | 湖南省湘电试研技术有限公司 | Based on the Portable rural distribution exchange de-icing method and device for handing over orthogonal Two Stages |
| CN110829335A (en) * | 2019-11-18 | 2020-02-21 | 国网湖南省电力有限公司 | Prefabricated cabin type agricultural distribution network direct-current ice melting device and ice melting method thereof |
| CN114977059A (en) * | 2022-04-19 | 2022-08-30 | 杭州佳辰电力科技有限公司 | Direct-current ice melting method, device and system based on distributed energy storage power station |
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| CN204156540U (en) * | 2014-11-13 | 2015-02-11 | 株洲变流技术国家工程研究中心有限公司 | A kind of solar module ice melting system |
| CN105406433A (en) * | 2016-01-23 | 2016-03-16 | 国网福建省电力有限公司 | Optimal power and capacity selection method of mobile battery energy storage DC-based deicing system |
| CN205791405U (en) * | 2016-06-24 | 2016-12-07 | 国网福建省电力有限公司 | Power distribution network medium-voltage line direct current thermal ice-melting circuit based on mobile battery energy storage device |
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| CN105958414A (en) | 2016-09-21 |
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Effective date of registration: 20171130 Address after: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 257 Co-patentee after: State Grid Corporation of China Patentee after: State Grid Fujian Electric Power Co., Ltd. Co-patentee after: Electric Power Research Institute, State Grid Fujian Electric Power Co., Ltd. Co-patentee after: Economic technology academy of State Grid Fujian Electric Power Co., Ltd. Address before: 350003 Fuzhou Road, Fujian, No. 54, No. 257 Co-patentee before: State Grid Corporation of China Patentee before: State Grid Fujian Electric Power Co., Ltd. Co-patentee before: Electric Power Research Institute, State Grid Fujian Electric Power Co., Ltd. |
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