CN203193377U - Communication power and station-used DC power integrated structure for transformer station - Google Patents
Communication power and station-used DC power integrated structure for transformer station Download PDFInfo
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- CN203193377U CN203193377U CN 201320019455 CN201320019455U CN203193377U CN 203193377 U CN203193377 U CN 203193377U CN 201320019455 CN201320019455 CN 201320019455 CN 201320019455 U CN201320019455 U CN 201320019455U CN 203193377 U CN203193377 U CN 203193377U
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Abstract
The utility model discloses a communication power and station-used DC power integrated structure for a transformer station; the structure comprises a communication distribution board and a plurality of communication equipment boards, and each communication equipment board is configured with a DC/DC module; a power input terminal of the communication distribution board is connected with an output terminal of the station-used DC power, and each of a plurality of power output terminals of the communication distribution board is connected with a power input terminal of the DC/DC module; the station-used DC power is used as input power, 110V or 220V DC power is connected on the communication equipment boards from a DC power distribution board; and the DC power is converted to -48V power through the DC/DC module on the communication equipment board and then is outputted to the communication equipment for power supply. The transformer station-used communication power is provided; when a DC/DC module output branch of the communication equipment board generates short circuit or overload faults, then only the one board equipment is affected, so fault scope is greatly reduced; and a conventional 48V communication bus is cancelled, thereby simplifying electric wiring and improving reliability of communication power.
Description
Technical field
The utility model relates to transformer station's communication power supply, specifically relates to transformer station and reaches and the station integrated design of DC power supply with communication power supply.The equipment configuring technical field that belongs to transformer station.
Background technology
Communication is the nerve of electrical network, is related to the safety in production of whole electrical network and effectively management.At present, the communication DC power supply that transformer station adopts and transformer station station dispose separately with DC power supply, the communication DC storage battery of communication DC power configuration, charger, switchboard etc. are stood with the equipment repetition of DC power supply with transformer station, and need between battery room to arrange separately, caused certain wasting of resources.In addition, because the communication speciality related personnel is mated deficiency, patrolled and examined the standard that O﹠M lacks strictness, maintenance levels is uneven, causes the decline of part power source performance, the lost of life, has potential safety hazard.
For the reliability that improves the communication equipment power supply with reduce equipment investment, reduce master control building construction area, transformer station station DC power supply and communication DC power supply integration scheme have been studied, but existing station is that slave station is exported through 2 road DC/DC modules with DC power supply and is connected to-the 48V bus of communicating by letter with DC power supply and communication DC power supply integration scheme, powers to communication equipment.Find that through various operating condition adaptive testings there is following problem in this scheme:
1) inefficacy of DC/DC module output protection can cause output voltage too high and might defective communication equipment.
2) feeder line branch, short-circuit or overload may cause other branch road communication equipment outage.
3) high capacity communication equipment inserts and may cause other branch road communication equipment outage.
Above-mentioned 3 problems, wherein 1) is because the fault of DC/DC device self control module causes the DC/DC output voltage too high, is connected to equipment on the communication bus thereby may damage all.
2) and 3) all be because the large current characteristic of DC/DC device than storage battery difference, can't provide big electric current in short-term, sky is opened can't thread off or communicate by letter the busbar voltage rapid drawdown to cause.Therefore adopt the reliability of communication equipment power supply of this scheme relatively poor.
And on for the processing of discharge time of power supply accident, according to the GB relevant with communication DC and rower regulation, the communication DC power supply will be by 12 hours accident discharge process, stand and press 2 hours accident discharge process with DC power supply, this scheme then adopts station DC power supply and communication DC power supply accident compromise value discharge time.Remote districts, geographical position transformer station electrical load was by accident discharge in 2 hours, and communication load considers that by accident discharge in 4 hours this gets the requirement that the compromise time method can not satisfy current specifications.
Owing to the problems referred to above, influenced the reliability of communication DC power supply, restricted applying of transforming plant DC power supply integration technology.
Summary of the invention
One of the purpose of this utility model is in order to overcome the deficiencies in the prior art, transformer station's communication power supply to be provided.
Two of the purpose of this utility model, be for provide transformer station with communication power supply and station with DC power supply integrated design, this scheme can improve the reliability of communication power supply, dwindles fault coverage, and can monitor items of equipment in real time and pinpoint the problems early.Both satisfy simultaneously communication power supply and the station power supply related specifications requirement of discharge time, battery capacity is significantly risen, improved reliability and the intelligent level of integrated power supply.
One of the purpose of this utility model can realize by taking following technical scheme:
Transformer station's communication power supply is characterized in that: comprise communication switchboard and several communication equipments screen, in DC/DC module of each communication equipment screen configuration; The power input of described communication switchboard is communicated with the output that DC power supply is used at the station, and several power output ends of this communication switchboard respectively connect the power input of a DC/DC module; Adopting the station is the input power supply with DC power supply, and the built-in isolating transformer of described DC/DC module is realized the circuit structure that transforming plant DC docks with communication DC by this isolating transformer.The power input of communication switchboard links to each other with DC power supply with the station, for the communication equipment screen provides transformer station's communication power supply.
Further scheme of the present utility model: stand with the direct-flow storage battery of DC power supply, the dc charging motor screen connects the communication switchboard by dc bus power input, the power input that is installed in the DC/DC module in each communication equipment screen is connected on the dc bus, and constituting the station is the circuit structure of input power supply with direct-flow storage battery and station with the dc charging motor screen.
Two of the purpose of this utility model can reach by taking following technical scheme:
Transformer station communication power supply and the station integrated design of DC power supply, it is characterized in that: adopt distributed DC/DC Module Design theory, in every communication equipment screen, the DC/DC module is installed, from DC distributor 110V or 220V DC power supply are received on the communication equipment screen, by the DC/DC module on the communication equipment screen be transformed into-the 48V power supply exports to the communication equipment power supply, cancellation communication DC-48V bus, be the input power supply with direct-flow storage battery and station with dc charging motor screen, constituting the station is the circuit structure of importing power supply with direct-flow storage battery and station with the dc charging motor screen.DC power supply in the transformer station and the unification of communication DC power supply have been realized, communication DC storage battery, cancellation communication DC charger have been cancelled, in each communication equipment screen the DC/DC module is installed, when the DC/DC module in certain communication equipment screen exports that branch road is short-circuited or during fault such as overload, only influence this screen equipment, can not exert an influence the fault coverage that dwindles greatly to other communication equipments.Described DC/DC module can realize that 110V direct current or 220V direct current are to the conversion of-48V direct current.
Further scheme of the present utility model: the integrated power supply intelligent monitor system is set in design, and described integrated power supply intelligent monitor system carries out real time and on line monitoring to direct-flow storage battery, dc charging motor screen, dc bus state of insulation, feeder line deciliter state and the DC/DC module status of transformer station.
Further scheme of the present utility model: described integrated power supply intelligent monitor system adopts layered distribution type structure, comprise senior application layer and wall, described senior application layer is the integrated power supply intelligent monitoring unit, and described wall comprises direct-flow storage battery on-line monitoring module, dc charging motor on-line monitoring module, DC/DC on-line monitoring module, dc bus insulated on-line monitoring module and feeder line state on_line monitoring module; The direct-flow storage battery on-line monitoring module of described wall, dc charging motor screen on-line monitoring module, DC/DC on-line monitoring module, dc bus insulated on-line monitoring module and feeder line state on_line monitoring module are all based on the IEC61850 stipulations, adopt optical fiber or ethernet line to insert the integrated power supply intelligent monitoring unit by Ethernet switch, by direct-flow storage battery on-line monitoring module, dc charging motor screen on-line monitoring module, DC/DC on-line monitoring module, dc bus insulated on-line monitoring module and feeder line state on_line monitoring module are monitored the information of gathering DC power supply device in real time, and information real-time be delivered to the integrated power supply intelligent monitoring unit, realize centralized monitor by the integrated power supply intelligent monitoring unit, collective analysis, the demonstration of equipment alarm and equipment state, the setting of parameter.
Direct-flow storage battery on-line monitoring module---monitor the information such as voltage, electric current, resistance of every storage battery in the batteries in real time, and will deliver to intelligent monitoring unit on the information.
Dc charging motor screen on-line monitoring module---monitor information such as the AC-input voltage of charger screen (being switch power module), the load condition that exchanges input current, VD, average anode current, each charging module, power factor in real time, and will deliver to intelligent monitoring unit on the information.
Dc bus insulating monitoring module---monitor the insulation level of dc bus in real time, when the insulation reduction takes place, send alarm signal, and will deliver to intelligent monitoring unit on the information at once.
The feeder line state monitoring module---monitor in real time that each road feeder line sky opens close, the branch state, and will deliver to intelligent monitoring unit on the information.
DC/DC module monitors module---monitor every information such as input voltage, input current, output voltage, output current, load condition, power factor of each DC/DC module in real time, and will deliver to intelligent monitoring unit on the information.
Direct-flow storage battery on-line monitoring module, dc charging motor on-line monitoring module, DC/DC module monitors module, dc bus insulation state monitoring module, feeder line state monitoring module etc. all adopt the mode of bus communication or ethernet communication to be connected to the integrated power supply intelligent monitoring unit, and the data centralization of all on-line monitorings focuses on and analyzes in the integrated power supply intelligent monitoring unit.
Further scheme of the present utility model: the direct-flow storage battery on-line monitoring module of described wall, dc charging motor screen on-line monitoring module, DC/DC on-line monitoring module, dc bus insulated on-line monitoring module and feeder line state on_line monitoring module also can insert the integrated power supply intelligent monitoring unit by cable bus based on the MODBUS stipulations.
Further scheme of the present utility model: described DC/DC on-line monitoring module couples together the DC/DC module that all are distributed on each communication equipment screen by bus, realizes the real-time monitoring to all DC/DC modules.
Further scheme of the present utility model: described DC distributor is divided into communication switchboard and transforming plant DC switchboard, described transforming plant DC switchboard aims at the power supply of transforming plant DC load, the communication switchboard aims at the power supply of communication DC load, be equipped with automatic excision switch on communication switchboard and the transforming plant DC switchboard, described automatic excision switch is controlled by the integrated power supply intelligent monitoring unit, the integrated power supply intelligent monitoring unit is monitored the interchange primary voltage of dc charging motor screen in real time, after all exchange dead electricity, by automatic excision switch the accident of direct-flow storage battery is divided into 2 stages discharge time, phase I: 0～120min, direct-flow storage battery is given equipment and the communication equipment power supply of transforming plant DC power supply simultaneously in this stage; Second stage: 121min～720min, this stage direct-flow storage battery is only powered to communication equipment.
Further scheme of the present utility model: the capacity of described direct-flow storage battery satisfies the discharge load of phase I and second stage, phase I: 0～120min, accident discharge load is the summation of the load of transforming plant DC power-supply device and communication equipment load in this stage, second stage: 121min～720min, this stage only is the communication equipment load.
The beneficial effects of the utility model:
1), to adopt the station be the input power supply of switchboard of communicating by letter with DC power supply, and transformer station's communication power supply is provided.
2), by DC/DC module independently in each communication equipment screen, from DC distributor 110V or 220V DC power supply are received on the communication equipment screen, be the input power supply with direct-flow storage battery and station with dc charging motor screen, constituting the station is the circuit structure of importing power supply with direct-flow storage battery and station with the dc charging motor screen.When the DC/DC module in certain communication equipment screen exports that branch road is short-circuited or during fault such as overload, only influence this screen equipment, can not exert an influence to other communication equipments, the fault coverage that dwindles greatly, and cancelled original 48V communication bus, simplify electrical wiring, improved the reliability of communication power supply;
3), by the integrated power supply intelligent monitoring unit with excise switch automatically and realized stage by stage discharge, the direct-flow storage battery accident is divided into 0～120min and two time periods of 121min～720min discharge time, solved the DC power supply of communication power supply and transformer station integrated after, in the accident selection of discharge time, satisfy the requirement of communication power supply and transforming plant DC power supply related specifications simultaneously, and can significantly not increase the capacity of storage battery again.
4), this programme designed perfect power supply self intelligent monitoring function, monitors parameters in real time by the integrated power supply intelligent monitor system, pinpoints the problems early, improved reliability and the intelligent level of integrated power supply.Advanced the development of transformer station's power of alterating and direct current integrated technique.
Description of drawings
Fig. 1 is the structural representation of existing DC power supply integrated technique.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the block diagram of the utility model integrated power supply intelligent monitor system.
Specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Specific embodiment 1:
Transformer station's communication power supply as shown in Figures 2 and 3 comprises communication switchboard 3-1 and several communication equipments screen 4, in DC/DC module 5 of each communication equipment screen 4 configuration; The power input of described communication switchboard 3-1 is communicated with the output that DC power supply is used at the station, and several power output ends of this communication switchboard 3-1 respectively connect the power input of a DC/DC module 5; Adopting the station is the input power supply with DC power supply, and described DC/DC module 5 built-in isolating transformers are realized the circuit structure that transforming plant DC docks with communication DC by this isolating transformer.
The power input that dc bus 7 connects communication switchboard 3-1 is passed through with direct-flow storage battery 1, the dc charging motor screen 2 of DC power supply in described station, the power input that is installed in the DC/DC module 5 in each communication equipment screen 4 is connected on the dc bus 7, and the formation station is shielded 2 circuit structures for the input power supply with direct-flow storage battery 1 and station with dc charging motor.
Transformer station communication power supply and the station integrated design of DC power supply, adopt the design concept of distributed DC/DC module 5, in every communication equipment screen 4, DC/DC module 5 is installed, from DC distributor 110V or 220V DC power supply are received on the communication equipment screen 4, by the DC/DC module 5 on the communication equipment screen 4 be transformed into-the 48V power supply exports to communication equipment 6 power supplies, cancellation communication DC-48V bus, shielding 2 with direct-flow storage battery 1 and station with dc charging motor is to import power supply, constitutes the station and uses direct-flow storage battery 1 and stand with dc charging motor screen 2 to importing the circuit structures of power supply.
The integrated power supply intelligent monitor system is set in design, and described integrated power supply intelligent monitor system carries out real time and on line monitoring to direct-flow storage battery 1, dc charging motor screen 2, dc bus state of insulation, feeder line deciliter state and the DC/DC module status of transformer station.
Described integrated power supply intelligent monitor system adopts layered distribution type structure, comprise senior application layer and wall, described senior application layer is integrated power supply intelligent monitoring unit 9, and described wall comprises direct-flow storage battery on-line monitoring module 10, dc charging motor on-line monitoring module 11, DC/DC on-line monitoring module 12, dc bus insulated on-line monitoring module 13 and feeder line state on_line monitoring module 14; The direct-flow storage battery on-line monitoring module 10 of described wall, dc charging motor screen on-line monitoring module 11, DC/DC on-line monitoring module 12, dc bus insulated on-line monitoring module 13 and feeder line state on_line monitoring module 14 are all based on the IEC61850 stipulations, adopt optical fiber or ethernet line to insert integrated power supply intelligent monitoring unit 9 by Ethernet switch, by direct-flow storage battery on-line monitoring module 11, dc charging motor screen on-line monitoring module 11, DC/DC on-line monitoring module 12, the information of DC power supply device is gathered in dc bus insulated on-line monitoring module 13 and feeder line state on_line monitoring module 14 monitoring in real time, and information real-time be delivered to integrated power supply intelligent monitoring unit 9, realize centralized monitors by integrated power supply intelligent monitoring unit 9, collective analysis, the demonstration of equipment alarm and equipment state, the setting of parameter.
Described DC/DC on-line monitoring module 13 couples together the DC/DC module 5 that all are distributed on each communication equipment screen 4 by bus, realizes the real-time monitoring to all DC/DC modules 5.
Described DC distributor is divided into communication switchboard 3-1 and transforming plant DC switchboard 3-2, described transforming plant DC switchboard 3-2 aims at the power supply of transforming plant DC load, communication switchboard 3-1 aims at the power supply of communication DC load, be equipped with automatic excision switch 15 on communication switchboard 3-1 and the transforming plant DC switchboard 3-2, described automatic excision switch 15 is by 9 controls of integrated power supply intelligent monitoring unit, integrated power supply intelligent monitoring unit 9 is the interchange primary voltage of monitoring dc charging motor screen 2 in real time, after all exchange dead electricity, by automatic excision switch 15 accident of direct-flow storage battery 1 is divided into 2 stages discharge time, phase I: 0～120min, direct-flow storage battery 1 is given equipment and communication equipment 6 power supplies of transforming plant DC power supply simultaneously in this stage; Second stage: 121min～720min, this stage direct-flow storage battery 1 only give communication equipment 6 power supplies.
The capacity of described direct-flow storage battery 1 satisfies the discharge load of phase I and second stage, phase I: 0～120min, accident discharge load is the summation of the load of transforming plant DC power-supply device and communication equipment load in this stage, second stage: 121min～720min, this stage only is the communication equipment load.
The accident of direct-flow storage battery 1 adopts following method to realize discharge time: at communication switchboard 3-1 and transforming plant DC switchboard 3-2 automatic excision switch 15 is set, integrated power supply intelligent monitoring unit 9 is all interchange incoming powers of monitoring dc charging motor screen 2 in real time, when all exchange incoming powers all during dead electricity, pick up counting, open communication switchboard 3-1 and the transforming plant DC switchboard 3-2 of transforming plant DC power supply by automatic excision switch 15, after the dead electricity time is satisfied 120min, transforming plant DC switchboard 3-2 is cut off in integrated power supply intelligent monitoring unit 9 controls excision switch automatically, in ensuing 121min～720min, only keep communication switchboard 3-1, thereby both satisfied communication DC power supply accident discharge in 12 hours requirement, be unlikely again that battery capacity was significantly increased.For example, through calculating, a 500kV transformer station implements integrated power supply scheme of the present utility model, adopt this to excise strategy stage by stage after, standing becomes 110V1200Ah with the direct-flow storage battery capacity by original 110V800Ah and can meet the demands.
Specific embodiment 2:
The characteristics of present embodiment are: the direct-flow storage battery on-line monitoring module 10 of described wall, dc charging motor screen on-line monitoring module 11, DC/DC on-line monitoring module 12, dc bus insulated on-line monitoring module 13 and feeder line state on_line monitoring module 14 also can insert integrated power supply intelligent monitoring unit 9 by cable bus based on the MODBUS stipulations, and other characteristics are identical with specific embodiment 1.
Its protection range is not limited to the described content of embodiment; anyly be familiar with those skilled in the art in the scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all belonged to protection range of the present utility model.
Claims (1)
1. transformer station's communication power supply is characterized in that: comprise communication switchboard (3-1) and several communication equipments screen (4), in each communication equipment screen (4) configuration DC/DC module (5); The power input of described communication switchboard (3-1) is communicated with the output that DC power supply is used at the station, and several power output ends of this communication switchboard (3-1) respectively connect the power input of a DC/DC module (5); Adopting the station is the input power supply with DC power supply, and the built-in isolating transformer of described DC/DC module (5) is realized the circuit structure that transforming plant DC docks with communication DC by this isolating transformer.
2.Transformer station according to claim 1 communication power supply, it is characterized in that: stand with the direct-flow storage battery (1) of DC power supply, dc charging motor screen (2) connects communication switchboard (3-1) by dc bus (7) power input, the power input that is installed in the DC/DC module (5) in each communication equipment screen (4) is connected on the dc bus (7), and the formation station is the circuit structure of input power supply with dc charging motor screen (2) with direct-flow storage battery (1) and station.
3.Transformer station as claimed in claim 1 communication power supply and the station integrated structure of DC power supply, it is characterized in that: the design concept that adopts distributed DC/DC module (5), in every communication equipment screen, DC/DC module (5) is installed, from DC distributor 110V or 220V DC power supply are received on the communication equipment screen (4), by the DC/DC module (5) on the communication equipment screen (4) be transformed into-the 48V power supply exports to communication equipment (6) power supply, cancellation communication DC-48V bus, be the input power supply with direct-flow storage battery (1) and station with dc charging motor screen (2), constituting the station is the circuit structure of input power supply with direct-flow storage battery (1) and station with the dc charging motor screen.
4.According to the described transformer station of claim 3 communication power supply and the station integrated structure of DC power supply, it is characterized in that: the integrated power supply intelligent monitor system is set in design, and described integrated power supply intelligent monitor system carries out real time and on line monitoring to direct-flow storage battery (1), dc charging motor screen (2), dc bus state of insulation, feeder line deciliter state and the DC/DC module status of transformer station.
5.Transformer station according to claim 4 communication power supply and the station integrated structure of DC power supply, it is characterized in that: described integrated power supply intelligent monitor system adopts layered distribution type structure, comprise senior application layer and wall, described senior application layer is integrated power supply intelligent monitoring unit (9), and described wall comprises direct-flow storage battery on-line monitoring module (10), dc charging motor on-line monitoring module (11), DC/DC on-line monitoring module (12), dc bus insulated on-line monitoring module (13) and feeder line state on_line monitoring module (14); The direct-flow storage battery on-line monitoring module (10) of described wall, dc charging motor screen on-line monitoring module (11), DC/DC on-line monitoring module (12), dc bus insulated on-line monitoring module (13) and feeder line state on_line monitoring module (14) are all based on the IEC61850 stipulations, adopt optical fiber or ethernet line to insert integrated power supply intelligent monitoring unit (9) by Ethernet switch, by direct-flow storage battery on-line monitoring module (11), dc charging motor screen on-line monitoring module (11), DC/DC on-line monitoring module (12), the information of DC power supply device is gathered in the monitoring in real time of dc bus insulated on-line monitoring module (13) and feeder line state on_line monitoring module (14), and information real-time be delivered to integrated power supply intelligent monitoring unit (9), realize centralized monitor by integrated power supply intelligent monitoring unit (9), collective analysis, the demonstration of equipment alarm and equipment state, the setting of parameter.
6.Transformer station according to claim 5 communication power supply and the station integrated structure of DC power supply is characterized in that: the direct-flow storage battery on-line monitoring module (10) of described wall, dc charging motor screen on-line monitoring module (11), DC/DC on-line monitoring module (12), dc bus insulated on-line monitoring module (13) and feeder line state on_line monitoring module (14) also can be based on the MODBUS stipulations by cable bus access integrated power supply intelligent monitoring units (9).
7.According to claim 5 or 6 described transformer stations communication power supply and the station integrated structure of DC power supply, it is characterized in that: described DC/DC on-line monitoring module (13) couples together the DC/DC module (5) that all are distributed on each communication equipment screen (4) by bus, realizes the real-time monitoring to all DC/DC modules (5).
8.According to claim 3 or 4 described transformer stations communication power supply and the station integrated structure of DC power supply, it is characterized in that: described DC distributor is divided into communication switchboard (3-1) and transforming plant DC switchboard (3-2), described transforming plant DC switchboard (3-2) aims at the power supply of transforming plant DC load, communication switchboard (3-1) aims at the power supply of communication DC load, be equipped with automatic excision switch (15) on communication switchboard (3-1) and the transforming plant DC switchboard (3-2), described automatic excision switch (15) is controlled by integrated power supply intelligent monitoring unit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019455 CN203193377U (en) | 2013-01-14 | 2013-01-14 | Communication power and station-used DC power integrated structure for transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019455 CN203193377U (en) | 2013-01-14 | 2013-01-14 | Communication power and station-used DC power integrated structure for transformer station |
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| Publication Number | Publication Date |
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| CN203193377U true CN203193377U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320019455 Expired - Fee Related CN203193377U (en) | 2013-01-14 | 2013-01-14 | Communication power and station-used DC power integrated structure for transformer station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066692A (en) * | 2013-01-14 | 2013-04-24 | 中国能源建设集团广东省电力设计研究院 | Communication power supply and state-use direction current power supply integrated for transformer substation use design scheme |
| CN106026355A (en) * | 2016-05-30 | 2016-10-12 | 河南昊方通信工程技术有限公司 | Direct current power supply system for communication |
| CN106505730A (en) * | 2016-12-30 | 2017-03-15 | 北京知行新能科技有限公司 | Battery powered managing system |
-
2013
- 2013-01-14 CN CN 201320019455 patent/CN203193377U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066692A (en) * | 2013-01-14 | 2013-04-24 | 中国能源建设集团广东省电力设计研究院 | Communication power supply and state-use direction current power supply integrated for transformer substation use design scheme |
| CN106026355A (en) * | 2016-05-30 | 2016-10-12 | 河南昊方通信工程技术有限公司 | Direct current power supply system for communication |
| CN106505730A (en) * | 2016-12-30 | 2017-03-15 | 北京知行新能科技有限公司 | Battery powered managing system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
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| CP01 | Change in the name or title of a patent holder |
Address after: 510670 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510670 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee before: Guangdong Electric Power Design Institute of CEEC |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20210114 |