CN203119616U - Distributed direct-current power supply subsystem of intelligent substation - Google Patents
Distributed direct-current power supply subsystem of intelligent substation Download PDFInfo
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- CN203119616U CN203119616U CN 201320119671 CN201320119671U CN203119616U CN 203119616 U CN203119616 U CN 203119616U CN 201320119671 CN201320119671 CN 201320119671 CN 201320119671 U CN201320119671 U CN 201320119671U CN 203119616 U CN203119616 U CN 203119616U
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Abstract
The utility model discloses a distributed direct-current power supply subsystem of an intelligent substation. The distributed direct-current power supply subsystem comprises a power monitoring device which is connected with a system state monitoring device and a power supply system respectively through a filed bus, the power supply system is further connected with a storage battery pack, and a lithium iron phosphate storage battery pack or a valve-control type lead-acid battery pack is used in the storage battery pack. The direct-current power supply monitoring device is further connected with a direct-current insulation monitoring device through a field bus. The direct-current power supply monitoring device is further connected with a storage battery monitoring device and a storage battery maintaining system through field buses, and the storage battery monitoring system and the storage battery maintaining system are connected with the storage battery pack. A direct-current power supply is divided into a plurality of independently-operating small systems according to the structure planning of the substation and the design capacity of electric equipment, and the small systems and the electric equipment can be arranged nearby, each direct-current power supply subsystem is small in scale, simple in structure, safe, reliable and capable of better guaranteeing the power supply stability and the safety of the direct-current power supply in the region.
Description
Technical field
The utility model relates to the transforming plant distributed DC power supply subsystem of a kind of intellectuality.
Background technology
Intelligent substation requires secondary device layered distribution type layout and equipment to install on the spot at present.When equipment such as main transformer side protection observing and controlling, low-pressure side protection observing and controlling, merge cells were far away apart from DC power supply panel, DC power supply need increase the branch electric screen and use a large amount of cables to give power devices.The station has become a system that scale is very huge with DC power supply at present, and feeder line reaches the hundreds of road to cover the direct-flow electricity utilization apparatus at whole station.If adopt conventional DC power system, then direct current power supply loop certainly will be long too much.This will increase introduce such as
1, the bus differential cooperation difficulty of circuit breaker after the segmentation repeatedly, the unreasonable overstep tripping that occurs of differential cooperation is magnified fault coverage.
2, ground connection hidden danger increases.Dc bus scurries into that interchange, dc bus are scurried mutually, positive and negative busbar ground connection and multipoint earthing simultaneously, and distributed capacitance Da Yi causes protecting the possibility of various faults hidden danger such as equipment malfunction.This also is the most common failure point of the station usefulness DC power system of current 220kV and above electric pressure.
Certain conventional DC power system also exists:
3, the storage battery long-time running is at the floating charge stand-by state, and the performance of storage battery is difficult to make correct evaluation.
4, system's design is numerous and jumbled, fault is many.After the dc bus dead electricity, full station equipment paralysis.
5, one section bus only depends on a group storage battery, and designed reliability is not high.
6, after the direct current fault, if critical piece such as battery, charging module, supervising device etc. break down, the staff need take out stitches to battery, is difficult in time repair rapidly DC power system.
Chinese patent (application number: 2011101300550, patent name: the distributed DC uninterruptable power supply system), this patent disclosure a kind of distributed DC uninterruptable power supply system, comprise dc bus and some DC power supply subsystems that is distributed in each occasion, described several DC power supply subsystems all are connected in and constitute supply network on the dc bus, each DC power supply subsystem comprises: AC input cell, energy feed unit, energy storage device and multi-channel DC output loop, and also mention energy storage device and comprised lead-acid battery and lithium battery.Can modularized design but this patent does not relate to battery, more do not mention how to detect dc bus whether sneak into the collection of interchange, the collection that does not relate to the single battery temperature and internal resistance, do not solve maintenance free cell group how whole group of life-span, guarantee the lithium storage battery group performance, do not relate to the electric energy that photovoltaic generation equipment and wind power plant are supplied with and be converted to stable station DC power supply, thereby realize that green energy resource saves energy and reduce the cost.
The utility model content
The purpose of this utility model is exactly in order to address the above problem, provide a kind of intellectuality transforming plant distributed DC power supply subsystem, it have according to the design capacity of the planning of the general layout of transformer station and power consumption equipment with DC power supply be divided into several separately independent operating mini system and can arrange nearby with power consumption equipment, each distributed DC power subsystem scale is less, simple in structure, safe and reliable, can better guarantee this interval DC power supply stability and safety advantages.
To achieve these goals, the utility model adopts following technical scheme:
The transforming plant distributed DC power supply subsystem of a kind of intellectuality, comprise electrical power monitoring device, described electrical power monitoring device is connected with electric power system with the system state monitoring device respectively by fieldbus, described electric power system also is connected with the batteries that adopts modularized design and support plug and play, comprises several storage batterys in every pack module of described batteries.
Further, described electrical power monitoring device also is connected with the D.C. isolation monitoring device by fieldbus.
Further, described electrical power monitoring device also is connected with the accumulator monitoring system by fieldbus, and described accumulator monitoring system is connected with batteries.
Further, described electrical power monitoring device also is connected with the battery service system by fieldbus, and described battery service system is connected with batteries.
Described system state monitoring device comprises analogue collection module, switch acquisition module or fault detection module.
Described system state monitoring device is the conventional dispensing unit of direct current system, is connected with electrical power monitoring device by fieldbus such as RS485.
Described analogue collection module is for the sampling of analog quantitys such as the voltage on interchange inlet wire and the dc bus, electric current.
Described switch acquisition module is used for the sampling of dc feeder on off state and trip status.
Described fault detection module is opened status detection such as tripping operation for lightning arrester fault, outlet side fuse, lightning protection sky.
Described D.C. isolation monitoring device comprises that bus insulation detection module, branch road insulation monitoring module or interchange sneak into detection module.
Described D.C. isolation monitoring device is used for the monitoring dc bus and scurries into interchange, and dc bus is scurried mutually, faults such as positive and negative busbar while ground connection.The insulation against ground situation that adopts the leakage current method to detect feeder line can not injected low-frequency ac signal to bus, guarantees that bus is healthy and strong stable.The single busbar connection design does not exist dc bus to scurry fault mutually and can realize the above-mentioned anticlinal fault detect that relates to by special circuit.
Described bus insulation detection module is for detection of direct current module insulation against ground resistance.
Described branch road insulation monitoring module is for detection of dc feeder insulation against ground resistance.
Described interchange is sneaked into detection module and whether is sneaked into interchange for detection of dc bus.
Described accumulator monitoring system comprises battery tension detection module, batteries temperature detecting module or batteries internal resistance detection module.
Accumulator monitoring system and battery service system synergistic working, described accumulator monitoring system is used for data such as the voltage, temperature, internal resistance of cell in the monitoring native system,
Described battery tension detection module is used for gathering single battery voltage.
Described batteries temperature detecting module is used for gathering the single battery temperature.
Described batteries internal resistance detection module is used for gathering the single battery internal resistance.
Described battery service system comprises positive negative pulse stuffing charging device, passive charging equalization apparatus or active charge balancer.
Described battery service system is used for according to the information of accumulator monitoring system monitoring battery being carried out equalization operation, improves the inner single battery consistency of performance of batteries, improves whole group life-span and capacity, guarantees the performance of lithium storage battery group.
Concerning lead-acid batteries, adopt the positive negative pulse stuffing charging device can improve charging rate, play storage battery activation and proportionality action simultaneously.Passive charging equalization apparatus and active charge balancer can be used for plumbic acid and lithium-ions battery group.Passive charging equalization apparatus by the higher cell side parallel resistance scheme of voltage is consumed its electric energy, is realized monomer voltage and capacity unanimity in the whole group in the bulk charge process.The active charge balancer is realized voltage capacity unanimity between adjacent monomer by adjacent monomer bi-directional DC-DC energy mapping mode, thereby finally reaches each monomer unanimity in the whole group.
Described electric power system comprises power supply switching control, HF switch charging device, photovoltaic charged device or wind-powered electricity generation charging device.
Described electric power system is used for externally providing reliable and stable station DC power supply.
Described power supply switching control moves back control for online throwing between active and standby battery pack and switches, and guarantees system's power supply safety.
Described HF switch charging device is used to active and standby battery pack quick charge.The HF switch charging device is made up of a plurality of AC-DC charging modules.Described master battery pack refers to the current batteries that is connected with dc bus, and battery backup refers to break away from the batteries of dc bus
Described photovoltaic charged device is used for the electric energy that photovoltaic generation equipment is supplied with is converted to stable station direct current energy.
Described wind-powered electricity generation charging device is used for the electric energy that wind power plant is supplied with is converted to stable station DC power supply.
Some described distributed DC power subsystems are communicated by letter with master-control room by the station level network, and some described distributed DC power subsystems, station level network and master-control room three have formed the distributed DC power-supply system jointly.
Described electrical power monitoring device is the key control unit of native system.It adopts high performance embedded platform design.Can realize moving and fault message compiles and charging and the maintenance of forwarding, the logic control of whole power-supply system, active and standby batteries, the stability of ultimate guarantee direct current supply.
Electrical power monitoring device inserts intelligent substation station level network by Ethernet interface, follow designing a model and communication interface of " DLT 329-2010 is based on transformer station's low-tension supply device communication interface of DLT 860 " standard, realize two-way information interaction, satisfy intelligent substation based on the communication coherence request of DL/T 860.Based on IEEE1588 to the time function satisfied and measured and distributed network that control is used synchronous needs regularly, and can solve the bottleneck of long and synchronizing capacity difference Ethernet time of delay.
Described batteries is the core component that DC power supply is used at the station, adopts lithium iron phosphate storage battery group or analysing valve control type lead-acid accumulator battery group.Batteries adopts modularized design and supports plug and play, comprises several storage batterys in each module of batteries, only need change with the spare unit battery pack of same specification when batteries breaks down, soon quick-recovery distributed DC power subsystem.Batteries can be divided into master battery pack and battery backup, and so-called master battery pack refers to the current batteries that is connected with dc bus, and battery backup refers to break away from the batteries of dc bus.
Described batteries is used for store electrical energy, ensures direct-current power supply after exchanging dead electricity.
The beneficial effects of the utility model: original DC power system in large scale is divided into some distributed DC power subsystems according to spatial interval, and this design has following advantage:
1, distributed DC power subsystem and power load centralized arrangement, each subsystem small scale, protection such as circuit breaker equipment progression reduces the easier realization of the differential cooperation of circuit breaker.
2, adopt single busbar connection not have the design of silicon chain, simple in structure, ground connection, exchange that the fault point such as to sneak into just few.The feeder line way is few simultaneously, and distributed capacitance is little, can effectively reduce single-point grounding harmfulness, and the reliability of whole system is improved.And the faults such as equipment malfunction false alarm that sampled signal decays and the sampling precision deviation causes that can avoid conventional direct current system to cause because cable is long.Adopt the interchange feeder line grounding monitor of leakage current method, exchange the introducing of detection methods such as sneaking into, direct current is scurried mutually, can more fully whole power-supply system electricity consumption situation be monitored, reflect the insulation against ground situation of system more accurately.
3, lithium battery all fills the frequency height, and its battery performance parameter is easier to obtain.By internal resistance of single cell and temperature monitoring, can reflect its health status in real time and realize the SOC estimation.The employing of storage battery equalizing system can improve the inner single battery consistency of performance of batteries, improves whole group life-span and capacity.
4, distributed power supply, single subsystem power supply goes wrong, and is only limited to the paralysis of this interval, and the fault face is little, can not cause the whole stream power-supply system paralysis of standing erectly, and can improve whole station operating safety factor coefficient and reliability to some degree.System scale is little, can with the nearby little space mounting of field apparatus.And distributed DC power subsystem and the layering of current main-stream intelligent substation, distributed design concept are consistent, can place same outdoor cabinet altogether with power consumption equipments such as merge cells, intelligent terminals.
5, the lithium iron phosphate storage battery group is replaced conventional analysing valve control type lead-acid accumulator battery group, it is long to possess the life-span, and safety is not exploded, and operating temperature range is wide, advantages such as big capacity, environmental protection, quickly-chargeable, memoryless effectiveness more meet the condition of large-scale promotion application.Active and standby formula storage battery configuration, power supply reliability is higher.Put the formula management because lithium battery is fit to completely be full of, the performance of battery and health status inform the operations staff in real time, more the discovery battery hidden danger of morning.
6, unified interface, unified specification are adopted in each critical piece modularized design.Can improve group screen production efficiency, and design is more flexible.Battery module, charger module, supervising device etc. partly adopt the plug and play design, after on-the-spot above-mentioned parts break down, can use the spare part hot plug to replace.Improved fault recovery efficient.
In addition:
7, supervising device adopts traffic model and the communication interface meet the electric power proposed standard, interface standard more when its whole system is communicated by letter with higher level equipment, and consistency is better.
8, support the access of green novel energy sources such as photovoltaic, wind-powered electricity generation, support energy-saving and cost-reducing.
Description of drawings
Fig. 1 is distributed power source subsystem function block diagram;
Fig. 2 is the distributed DC power-supply system;
Fig. 3 is for adopting the conventional distributed DC power subsystem wiring schematic diagram of lead acid accumulator;
Fig. 4 is distributed DC power subsystem 1+1 pattern wiring schematic diagram;
Fig. 5 is distributed DC power subsystem 2+1 pattern wiring schematic diagram;
Fig. 6 is distributed DC power subsystem 2+2 pattern wiring schematic diagram;
Fig. 7 inserts block diagram for new forms of energy;
Fig. 8 is 1+1 pattern lithium battery winding line schematic diagram;
The detection equivalent electric circuit is sneaked in the interchange that Fig. 9 selects for use for the utility model.
Wherein, 1, electrical power monitoring device, 2, the system state monitoring device, 3, the D.C. isolation monitoring device, 4, the accumulator monitoring system, 5, the battery service system, 6, electric power system, 7, batteries, 8, fieldbus, 9, master-control room, 10, the station level network, 11, the distributed DC power subsystem, 21, analogue collection module, 22, the switch acquisition module, 23, fault detection module, 31, the bus insulation detection module, 32, the branch road insulation monitoring module, 33, detection module is sneaked in interchange, and 41, the battery tension detection module, 42, the batteries temperature detecting module, 43, batteries internal resistance detection module, 51, the positive negative pulse stuffing charging device, 52, passive charging equalization apparatus, 53, the active charge balancer, 61, the power supply switching control, 62, the HF switch charging device, 63, photovoltaic charged device, 64, the wind-powered electricity generation charging device.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the transforming plant distributed DC power supply subsystem of a kind of intellectuality, comprise electrical power monitoring device 1, described electrical power monitoring device 1 is connected with electric power system 6 with system state monitoring device 2 respectively by fieldbus 8, and described electric power system 6 also is connected with batteries 7.
Further, described electrical power monitoring device 1 also is connected with D.C. isolation monitoring device 3 by fieldbus 8.
Further, described electrical power monitoring device 1 also is connected with accumulator monitoring system 4 by fieldbus 8, and described accumulator monitoring system 4 is connected with batteries 7.
Further, described electrical power monitoring device 1 also is connected with battery service system 5 by fieldbus 8, and described battery service system 5 is connected with batteries 7.
Described system state monitoring device 2 comprises analogue collection module 21, switch acquisition module 22 or fault detection module 23.
Described D.C. isolation monitoring device 3 comprises bus insulation detection module 31, branch road insulation monitoring module 32 or exchanges sneaks into detection module 33.
Described accumulator monitoring system 4 comprises battery tension detection module 41, batteries temperature detecting module 42 or batteries internal resistance detection module 43.
Described battery service system 5 comprises positive negative pulse stuffing charging device 51, passive charging equalization apparatus 52 or active charge balancer 53.
Described electric power system 6 comprises power supply switching control 61, HF switch charging device 62, photovoltaic charged device 63 or wind-powered electricity generation charging device 64.
Described batteries 7 is core components that DC power supply is used at the station, adopts lithium iron phosphate storage battery group 7 or analysing valve control type lead-acid accumulator battery group 7.Batteries 7 adopts modularized design and supports plug and play, only need change with the spare unit battery pack of same specification when batteries 7 breaks down, and quick-recovery distributed DC power subsystem 11 soon.
As shown in Figure 2, some described distributed DC power subsystems 11 are communicated by letter with master-control room 9 by station level network 10, and some described distributed DC power subsystems 11, station level network 10 and master-control room 9 threes have formed the distributed DC power-supply system jointly.
Described electrical power monitoring device 1 is the key control unit of native system.It adopts high performance embedded platform design.Can realize moving and fault message compiles and forwarding, the logic control of whole power-supply system, charging and the maintenance of active and standby batteries 7, the stability of ultimate guarantee direct current supply.
Electrical power monitoring device 1 inserts intelligent substation station level network 10 by Ethernet interface, follow designing a model and communication interface of " DLT 329-2010 is based on transformer station's low-tension supply device communication interface of DLT 860 " standard, realize two-way information interaction, satisfy intelligent substation based on the communication coherence request of DL/T 860.Based on IEEE1588 to the time function satisfied and measured and distributed network that control is used synchronous needs regularly, and can solve the bottleneck of long and synchronizing capacity difference Ethernet time of delay.
As shown in Figure 3, if batteries 7 is still selected analysing valve control type lead-acid accumulator battery group 7 for use, the station of this subsystem design and little load is similar with conventional DC power system.Battery pack all is connected with dc bus, and charging device also is connected with dc bus.
As shown in Figure 4, charging device, supervising device and two battery pack all are connected with dc bus, charging device is connected with two battery pack respectively, and the information interchange inlet wire that supervising device also can be monitored charging device, first battery pack and second battery pack enters charging device.
As shown in Figure 5, consider that the reliability of power-supply system can increase by a group storage battery 7 again on the basis of 1+1 pattern, increase the redundancy of system, the present invention is referred to as the 2+1 pattern.Two group storage batteries hang on the bus simultaneously and power during normal the operation, and the 3rd group storage battery battery as an alternative uses.Charging device preferentially charges to the battery that breaks away from earlier.
As shown in Figure 6, there is the double-bus design at 500kV and some the interval requirement of above intelligent substation, can adopt 2+2 pattern (give two sections bussed supplies with two group storage batteries respectively generally speaking, two groups of standby battery groups 7 are as the stand-by power supply of two sections buses) configuration.Certainly also can select for use the distributed DC power subsystem scheme of two cover 1+1 pattern configurations to give two sections bussed supplies respectively.Batteries 7 adopts modularized design and supports plug and play, only need change with the battery backup of same specification when batteries 7 breaks down, and quick-recovery distributed DC power subsystem 11 soon.
As shown in Figure 7, electric power system 6 is the core components in the distributed DC power subsystem 11.It partly is made up of wind-powered electricity generation charging device 64, photovoltaic charged device 63, HF switch charging device 62, power supply switching control 61 etc.The access of environmental protection power supplys such as wind-powered electricity generation charging device 64, photovoltaic charged device 63 has realized the variation of electric energy input, and makes system more healthy and stronger.
Be that its wiring schematic diagram of example is illustrated in fig. 8 shown below with 1+1 pattern configurations lithium ion battery group system:
The HF switch charging module is made up of a plurality of AC-DC charging modules.Charge maintenance and the bussed supply function to two groups of lithium battery groups finished in charging module and control unit co-ordination as shown in the figure.Finished two groups of lithium battery group chargings by control unit control, when the charging of 1# lithium battery group power supply 2# lithium battery group, K1, K4 closed K2, K3 disconnect; When the 2# lithium cell charging finished, K4 disconnected, and 2# lithium battery group is in heat and is equipped with state; When 1# lithium battery group electric weight is not enough, by the power supply of 2# lithium battery group, the charging of 1# lithium battery group, at this moment, and K2, K3 closure, K1 disconnects; When the charging of 1# lithium battery group finished, K2 disconnected, and 1# lithium battery group is in heat and is equipped with state.Constantly circulation goes round and begins again.
The wiring of 2+2 mould 7 formulas configuration lithium ion battery group system is slightly different with the 1+1 pattern: 1# lithium battery group is a female power supply, and 2# lithium battery group is two female power supplies, and 3# lithium battery group is as a mother stand-by power supply, and the 4# lithium battery is as two mothers' stand-by power supply.HF switch charging module and the co-ordination of power supply switching controls are finished two groups of lithium battery group charge maintenances and corresponding bussed supply function.One-sided switching mode and above-mentioned 1+1 configuration are similar.
As shown in Figure 9, the detection equivalent electric circuit is sneaked in the interchange of selecting for use in the native system, and the D.C. isolation monitoring has become a very important part in the whole DC power system.Particularly designing institutees at different levels design several times anticlinal after, D.C. isolation detect to need detects dc bus scurry into interchange, dc bus is scurried mutually, positive and negative busbar is fault such as ground connection simultaneously.The insulation against ground situation that we adopt the leakage current method to detect feeder line can not injected low-frequency ac signal to bus, guarantees that bus is healthy and strong stable.The single busbar connection design does not exist dc bus to scurry fault mutually and can realize the above-mentioned anticlinal fault detect that relates to by special circuit.R1, R2 are balance bridge resistance, and C1 is the direct current system equivalent capacity.
Though above-mentionedly by reference to the accompanying drawings embodiment of the present utility model is described; but be not the restriction to the utility model protection range; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection range of the present utility model.
Claims (10)
1. transforming plant distributed DC power supply subsystem of intellectuality, it is characterized in that, comprise electrical power monitoring device, described electrical power monitoring device is connected with electric power system with the system state monitoring device respectively by fieldbus, described electric power system also is connected with the batteries that adopts modularized design and support plug and play, comprises several storage batterys in every pack module of described batteries.
2. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 1 is characterized in that, described electrical power monitoring device also is connected with the D.C. isolation monitoring device by fieldbus.
3. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 1 is characterized in that, described electrical power monitoring device also is connected with the accumulator monitoring system by fieldbus, and described accumulator monitoring system is connected with batteries.
4. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 1 is characterized in that, described electrical power monitoring device also is connected with the battery service system by fieldbus, and described battery service system is connected with batteries.
5. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 1 is characterized in that, described system state monitoring device comprises analogue collection module, switch acquisition module or fault detection module.
6. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 2 is characterized in that, described D.C. isolation monitoring device comprises that bus insulation detection module, branch road insulation monitoring module or interchange sneak into detection module.
7. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 3 is characterized in that, described accumulator monitoring system comprises battery tension detection module, batteries temperature detecting module or batteries internal resistance detection module.
8. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 4 is characterized in that, described battery service system comprises positive negative pulse stuffing charging device, passive charging equalization apparatus or active charge balancer.
9. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 1 is characterized in that, described electric power system also comprises power supply switching control, HF switch charging device, photovoltaic charged device or wind-powered electricity generation charging device.
10. the transforming plant distributed DC power supply subsystem of a kind of intellectuality as claimed in claim 1 is characterized in that, described batteries adopts lithium iron phosphate storage battery group or analysing valve control type lead-acid accumulator battery group.
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| CN 201320119671 CN203119616U (en) | 2013-03-15 | 2013-03-15 | Distributed direct-current power supply subsystem of intelligent substation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846075A (en) * | 2017-12-13 | 2018-03-27 | 国网上海市电力公司 | A kind of modularized distribution type batteries in parallel connection straight-flow system |
| CN107947332A (en) * | 2017-09-13 | 2018-04-20 | 浙江时通电气制造有限公司 | A kind of vehicle moving direct current emergency power supply case |
-
2013
- 2013-03-15 CN CN 201320119671 patent/CN203119616U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947332A (en) * | 2017-09-13 | 2018-04-20 | 浙江时通电气制造有限公司 | A kind of vehicle moving direct current emergency power supply case |
| CN107947332B (en) * | 2017-09-13 | 2020-02-07 | 浙江时通电气制造有限公司 | Vehicle-mounted mobile direct-current emergency power box |
| CN107846075A (en) * | 2017-12-13 | 2018-03-27 | 国网上海市电力公司 | A kind of modularized distribution type batteries in parallel connection straight-flow system |
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Address after: 250101 Electric Power Intelligent Robot Production Project 101 in Jinan City, Shandong Province, South of Feiyue Avenue and East of No. 26 Road (ICT Industrial Park) Patentee after: National Network Intelligent Technology Co.,Ltd. Address before: 250101 Qilu Software Park building, Ji'nan hi tech Zone, Shandong, B-205 Patentee before: SHANDONG LUNENG INTELLIGENCE TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20201214 Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee after: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch Address before: 250101 power intelligent robot production project 101 south of Feiyue Avenue and east of No.26 Road (in ICT Industrial Park) in Suncun District of Gaoxin, Jinan City, Shandong Province Patentee before: National Network Intelligent Technology Co.,Ltd. |
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Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee after: Shandong luruan Digital Technology Co.,Ltd. smart energy branch Address before: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee before: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch |
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Granted publication date: 20130807 |
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