CN111987790A - Power taking device in ring main unit - Google Patents
Power taking device in ring main unit Download PDFInfo
- Publication number
- CN111987790A CN111987790A CN202010799408.5A CN202010799408A CN111987790A CN 111987790 A CN111987790 A CN 111987790A CN 202010799408 A CN202010799408 A CN 202010799408A CN 111987790 A CN111987790 A CN 111987790A
- Authority
- CN
- China
- Prior art keywords
- module
- power supply
- energy
- main unit
- ring main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 45
- 238000004146 energy storage Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention discloses a power taking device in a ring main unit, which comprises an energy taking module, an automatic switching module, an alternating current power supply module, a direct current power supply module and an energy storage module, wherein the automatic switching module is respectively and electrically connected with the energy taking module, the alternating current power supply module and the direct current power supply module, the input end of the energy storage module is connected with the energy taking module, and the output end of the energy storage module is connected with the automatic switching module. The invention can get electricity on line when the high-voltage system of the ring main unit works in a normal electrified way, and can realize mutual standby among a plurality of power supply windings; can switch over to another low voltage winding power supply when arbitrary winding breaks down fast, even in the period that looped netowrk cabinet high-voltage system trouble had a power failure, the energy storage module of this application, automatic switch-over module still can be for looped netowrk cabinet on-line monitoring device power supply, realize the on-line monitoring of looped netowrk cabinet full fault cycle. Meanwhile, the device can provide alternating current and direct current power supplies with multiple voltage levels, and can be compatible with the power supply of online monitoring devices with different power supply requirements.
Description
Technical Field
The invention belongs to the technical field of electric power distribution equipment, and particularly relates to a power taking device in a ring main unit.
Background
The ring main unit is used as one of main power equipment of the power distribution network, has the advantages of simple structure, low cost and reliable operation, is widely applied to the switching station, the ring main room, the power distribution station, the pre-installed box transformer substation and the like of the power distribution line, can greatly improve the power supply reliability and the economical efficiency of the power distribution network, and reduces the labor intensity. However, in the long-term operation of the ring main unit, due to various objective reasons, the ring main unit has cable lap joint faults, air chamber faults, operating mechanism faults, lightning arrester faults and the like in the installation and commissioning process, so that hidden dangers are brought to the reliable operation of a power grid. Under the background, the looped network cabinet online monitoring technology comes, a high-sensitivity sensor is used for continuously extracting information parameters capable of reflecting the insulation state of electrical equipment, an intelligent technology is applied according to the magnitude and the variation trend of the values of the information parameters, the temperature of a cable of the looped network cabinet, the temperature of a bus bar pile head, the environment temperature and humidity of the looped network cabinet, the characteristics of an operating mechanism and the trace water and density of SF6 gas in an air chamber are monitored in real time, the electric quantity parameters of each looped network unit can be collected in real time, the quality of electric energy is analyzed and managed, an intelligent looped network cabinet monitor diagnoses the reliability of the equipment in real time and predicts the residual life, an overhaul scheme is made according to the diagnosis result, a basis is provided for state maintenance, and reliable power supply of an online monitoring device is a crucial link.
However, when the ring main unit is monitored online in the prior art, the power failure of the ring main unit due to system failure often occurs, and the detection effect and the monitoring data of the ring main unit are affected, so that it is particularly important to design a ring main unit power supply device which can reliably supply power to the ring main unit, realize the online monitoring of the full fault period of the ring main unit, and is compatible with the power supply of online monitoring devices with different power supply requirements.
Disclosure of Invention
The invention provides a power taking device in a ring main unit, aiming at solving the problem that the prior art can not carry out online monitoring on the ring main unit under the condition of power failure of the ring main unit.
The invention adopts the following technical scheme:
the utility model provides an get electric installation in looped netowrk cabinet, its key lies in: the energy-saving device comprises an energy-taking module, an automatic switching module, an alternating current power supply module, a direct current power supply module and an energy storage module, wherein the automatic switching module is respectively and electrically connected with the energy-taking module, the alternating current power supply module and the direct current power supply module;
the energy taking module is used for acquiring high-voltage energy outside the ring main unit;
the automatic switching module is used for switching the energy supply mode;
the alternating current power supply module and the direct current power supply module are used for adapting to output ends with different power supply requirements;
the energy storage module is used for storing and outputting electric energy.
As a preferred scheme, the energy obtaining module comprises a high-voltage winding, a first low-voltage winding, a second low-voltage winding and a third low-voltage winding;
the high-voltage winding is used for connecting high-voltage energy outside the ring main unit;
the first low-voltage winding and the second low-voltage winding are used for being connected with the automatic switching module;
the third low-voltage winding is used for being connected with the energy storage module.
Preferably, the automatic switching module comprises a detection device and a switch, the detection device is used for automatically identifying the fault of any low-voltage winding in the energy obtaining module, and the switch is used for isolating the fault low-voltage winding.
Preferably, the AC power supply module includes a multi-tap transformer, the DC power supply module includes a plurality of AC/DC converters, and the output terminal of the automatic switching module is connected to the multi-tap transformer and each of the AC/DC converters, respectively.
Preferably, the energy storage module comprises a bidirectional power converter and an energy storage block, the bidirectional converter is respectively connected with the energy taking module and the automatic switching module, and the energy storage block is composed of a storage battery pack and a super capacitor.
Preferably, the multi-tap transformer has a fixed number of turns of a primary winding, a rated voltage of 220V, a plurality of taps of a secondary winding, an output of alternating voltage at least including 220V and 110V, and a spare winding.
Preferably, the AC/DC converters are connected in parallel in a common bus, the rated voltage of the AC side of the AC/DC converters is 220V, the output voltage of the DC side at least comprises DC voltages of 110V and 48V, and a standby AC/DC module is reserved.
Has the advantages that: according to the power taking device in the ring main unit, the power can be taken on line when a high-voltage system of the ring main unit works in a normal electrified mode, and meanwhile, a plurality of power supply windings can be reserved; can switch over to another low voltage winding power supply when arbitrary winding breaks down fast, even in the period that looped netowrk cabinet high-voltage system trouble had a power failure, the energy storage module of this application, automatic switch-over module still can be for looped netowrk cabinet on-line monitoring device power supply, realize the on-line monitoring of looped netowrk cabinet full fault cycle. Meanwhile, the device can provide alternating current and direct current power supplies with multiple voltage levels, and can be compatible with the power supply of online monitoring devices with different power supply requirements.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic diagram of the structure of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
example (b):
as shown in fig. 1, an electricity taking device in a ring main unit comprises an energy taking module a, an automatic switching module B, an alternating current power supply module C, a direct current power supply module D and an energy storage module E, wherein the automatic switching module B is electrically connected with the energy taking module a, the alternating current power supply module C and the direct current power supply module D respectively, the input end of the energy storage module E is connected with the energy taking module a, and the output end of the energy storage module E is connected with the automatic switching module B;
the energy taking module A is used for acquiring high-voltage energy outside the ring main unit;
the automatic switching module B is used for switching the energy supply mode;
the alternating current power supply module C and the direct current power supply module D are used for adapting to different power supply requirement output ends;
the energy storage module E is used for storing and outputting electric energy.
Preferably, the energy obtaining module A comprises a high-voltage winding A1, a first low-voltage winding A2, a second low-voltage winding A3 and a third low-voltage winding A4;
the high-voltage winding A1 is used for connecting a high-voltage energy source outside the ring main unit;
the first low-voltage winding A2 and the second low-voltage winding A3 are used for connecting the automatic switching module B;
the third low-voltage winding a4 is used for connecting the energy storage module E.
The automatic switching module B comprises a detection device B1 and a switch B2, the detection device B1 is used for automatically identifying the fault of any low-voltage winding in the energy acquisition module A, and the switch B2 is used for isolating the fault low-voltage winding; the alternating current power supply module C comprises a multi-tap transformer, the direct current power supply module D comprises a plurality of AC/DC converters, and the output end of the automatic switching module B is respectively connected to the multi-tap transformer and each AC/DC converter; the energy storage module E comprises a bidirectional power converter E1 and an energy storage block E2, a bidirectional alternating current device E1 is respectively connected with the energy taking module A and the automatic switching module B, and the energy storage block E2 consists of a storage battery pack and a super capacitor.
In specific implementation, the turns of a primary winding of the multi-tap transformer are fixed, the rated voltage is 220V, the secondary winding is provided with a plurality of taps, alternating-current voltages at least including 220V and 110V are output, and a standby winding is reserved and can be tapped according to actual requirements; the AC/DC converters are connected in parallel in a common bus, the rated voltage of the AC side of the AC/DC converters is 220V, the output voltage of the DC side at least comprises DC voltages of 110V and 48V, and a spare AC/DC module is reserved and can be used as an AC/DC module for adding other voltages and replacing corresponding transformation ratios.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (7)
1. The utility model provides an get electric installation in looped netowrk cabinet which characterized in that: the energy-saving power supply comprises an energy-taking module (A), an automatic switching module (B), an alternating current power supply module (C), a direct current power supply module (D) and an energy storage module (E), wherein the automatic switching module (B) is respectively and electrically connected with the energy-taking module (A), the alternating current power supply module (C) and the direct current power supply module (D), the input end of the energy storage module (E) is connected with the energy-taking module (A), and the output end of the energy storage module (E) is connected with the automatic switching module (B);
the energy taking module (A) is used for acquiring high-voltage energy outside the ring main unit;
the automatic switching module (B) is used for switching energy supply modes;
the alternating current power supply module (C) and the direct current power supply module (D) are used for adapting to output ends with different power supply requirements;
the energy storage module (E) is used for storing and outputting electric energy.
2. The power taking device in the ring main unit as claimed in claim 1, wherein: the energy-taking module (A) comprises a high-voltage winding (A1), a first low-voltage winding (A2), a second low-voltage winding (A3) and a third low-voltage winding (A4);
the high-voltage winding (A1) is used for connecting a high-voltage energy source outside the ring main unit;
the first low-voltage winding (A2) and the second low-voltage winding (A3) are used for connecting the automatic switching module (B);
the third low-voltage winding (A4) is used for connecting the energy storage module (E).
3. The power taking device in the ring main unit as claimed in claim 2, wherein: the automatic switching module (B) comprises a detection device (B1) and a switch (B2), the detection device (B1) is used for automatically identifying the fault of any low-voltage winding in the energy-taking module (A), and the switch (B2) is used for isolating the fault low-voltage winding.
4. The power taking device in the ring main unit as claimed in claim 3, wherein: the alternating current power supply module (C) comprises a multi-tap transformer, the direct current power supply module (D) comprises a plurality of AC/DC converters, and the output end of the automatic switching module (B) is respectively connected to the multi-tap transformer and each AC/DC converter.
5. The power taking device in the ring main unit as claimed in claim 1, wherein: the energy storage module (E) comprises a bidirectional power converter (E1) and an energy storage block (E2), the bidirectional converter (E1) is respectively connected with the energy taking module (A) and the automatic switching module (B), and the energy storage block (E2) consists of a storage battery pack and a super capacitor.
6. The power taking device in the ring main unit as claimed in claim 4, wherein: the multi-tap transformer has the advantages that the number of turns of a primary winding is fixed, the rated voltage is 220V, the secondary winding is provided with a plurality of taps, the output of the multi-tap transformer at least comprises 220V and 110V alternating current voltage, and a spare winding is reserved.
7. The power taking device in the ring main unit as claimed in claim 4, wherein: the AC/DC converters are connected in parallel in a common bus, the rated voltage of the AC side of the AC/DC converters is 220V, the output voltage of the DC side at least comprises DC voltages of 110V and 48V, and a standby AC/DC module is reserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799408.5A CN111987790B (en) | 2020-08-11 | 2020-08-11 | Get electric installation in looped netowrk cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799408.5A CN111987790B (en) | 2020-08-11 | 2020-08-11 | Get electric installation in looped netowrk cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111987790A true CN111987790A (en) | 2020-11-24 |
| CN111987790B CN111987790B (en) | 2024-02-20 |
Family
ID=73445487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010799408.5A Active CN111987790B (en) | 2020-08-11 | 2020-08-11 | Get electric installation in looped netowrk cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111987790B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023131A (en) * | 2012-11-14 | 2013-04-03 | 北京百度网讯科技有限公司 | Direct-current power supply system of data center |
| CN103414244A (en) * | 2013-08-27 | 2013-11-27 | 国家电网公司 | Ring main unit self-powered system |
| CN203368139U (en) * | 2013-07-05 | 2013-12-25 | 珠海市恒瑞电力科技有限公司 | Novel passive protection device for ring main unit |
| CN203491784U (en) * | 2013-08-27 | 2014-03-19 | 国家电网公司 | Power supply self-powered system used for ring main unit |
| CN204721086U (en) * | 2015-07-06 | 2015-10-21 | 成都鑫众泰成套电气设备有限公司 | A kind of electric power system for ring main unit |
| CN105322574A (en) * | 2013-04-15 | 2016-02-10 | 朱海燕 | Working method of switch cabinet internally provided with power supply module and used for power system |
| CN105471104A (en) * | 2015-12-17 | 2016-04-06 | 国家电网公司 | Intelligent box-type substation |
| CN105914771A (en) * | 2016-04-19 | 2016-08-31 | 南方电网科学研究院有限责任公司 | Energy router |
| CN205791592U (en) * | 2016-05-16 | 2016-12-07 | 广州市漫联电子科技有限公司 | There is the DC UPS identifying function |
| CN208955735U (en) * | 2018-08-22 | 2019-06-07 | 广州南方电力集团电器有限公司 | Power grid power distribution circuit and communication and power supply controlling integrated management switchgear |
| CN110224432A (en) * | 2019-06-13 | 2019-09-10 | 乐山一拉得电网自动化有限公司 | A kind of box-type substation and its microgrid system control method |
| CN209419320U (en) * | 2019-03-13 | 2019-09-20 | 中国电建集团福建省电力勘测设计院有限公司 | Utilize the energy storage station station power use system of energy storage device |
| CN209709691U (en) * | 2019-01-31 | 2019-11-29 | 上海泓语电气技术有限公司 | The alternating current-direct current mixing microgrid framework integrated with distribution transformer rectifier |
| CN111162530A (en) * | 2020-01-14 | 2020-05-15 | 北京金茂绿建科技有限公司 | Power access system for accessing generator outlet to peak regulation facility |
-
2020
- 2020-08-11 CN CN202010799408.5A patent/CN111987790B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023131A (en) * | 2012-11-14 | 2013-04-03 | 北京百度网讯科技有限公司 | Direct-current power supply system of data center |
| CN105322574A (en) * | 2013-04-15 | 2016-02-10 | 朱海燕 | Working method of switch cabinet internally provided with power supply module and used for power system |
| CN203368139U (en) * | 2013-07-05 | 2013-12-25 | 珠海市恒瑞电力科技有限公司 | Novel passive protection device for ring main unit |
| CN103414244A (en) * | 2013-08-27 | 2013-11-27 | 国家电网公司 | Ring main unit self-powered system |
| CN203491784U (en) * | 2013-08-27 | 2014-03-19 | 国家电网公司 | Power supply self-powered system used for ring main unit |
| CN204721086U (en) * | 2015-07-06 | 2015-10-21 | 成都鑫众泰成套电气设备有限公司 | A kind of electric power system for ring main unit |
| CN105471104A (en) * | 2015-12-17 | 2016-04-06 | 国家电网公司 | Intelligent box-type substation |
| CN105914771A (en) * | 2016-04-19 | 2016-08-31 | 南方电网科学研究院有限责任公司 | Energy router |
| CN205791592U (en) * | 2016-05-16 | 2016-12-07 | 广州市漫联电子科技有限公司 | There is the DC UPS identifying function |
| CN208955735U (en) * | 2018-08-22 | 2019-06-07 | 广州南方电力集团电器有限公司 | Power grid power distribution circuit and communication and power supply controlling integrated management switchgear |
| CN209709691U (en) * | 2019-01-31 | 2019-11-29 | 上海泓语电气技术有限公司 | The alternating current-direct current mixing microgrid framework integrated with distribution transformer rectifier |
| CN209419320U (en) * | 2019-03-13 | 2019-09-20 | 中国电建集团福建省电力勘测设计院有限公司 | Utilize the energy storage station station power use system of energy storage device |
| CN110224432A (en) * | 2019-06-13 | 2019-09-10 | 乐山一拉得电网自动化有限公司 | A kind of box-type substation and its microgrid system control method |
| CN111162530A (en) * | 2020-01-14 | 2020-05-15 | 北京金茂绿建科技有限公司 | Power access system for accessing generator outlet to peak regulation facility |
Non-Patent Citations (1)
| Title |
|---|
| 殷迪清;韩跃峻;胡顺;: "高压电缆线路不间断取能电源的研究", 水电能源科学, no. 09, 30 September 2011 (2011-09-30), pages 168 - 170 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111987790B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108183545B (en) | Multi-energy micro-grid power supply system for data center | |
| CN212012259U (en) | Low-voltage distribution network state monitoring system with intelligent distribution transformer terminal | |
| CN103107595B (en) | Substation automation system in prefabricated transformer substation | |
| CN111799880A (en) | Off-grid integrated communication power supply system, control method and storage medium | |
| CN110752615B (en) | On-site joint debugging device and method for battery energy storage power station | |
| CN102074994B (en) | Charging device of direct-current (DC) system | |
| CN220342105U (en) | Intelligent combined switch cabinet for subway | |
| CN201887532U (en) | Charging device of locomotive | |
| CN204992272U (en) | Dual supply massive quantity power supply and high expanded pull -out type measuring equipment that does not repeat of low meter that supplies | |
| Kester et al. | A smart MV/LV-station that improves power quality, reliability and substation load profile | |
| CN111987790B (en) | Get electric installation in looped netowrk cabinet | |
| KR20210051862A (en) | Reactive Power Compensation type Ground Transformer | |
| CN114441896B (en) | Distribution network automatic simulation platform and FTU detection method | |
| CN216016147U (en) | Intelligent electric energy metering box | |
| CN211880158U (en) | Power supply system | |
| CN110277787B (en) | On-load voltage regulation switch control system and voltage regulation control method thereof | |
| CN210201493U (en) | New energy power station power generation unit measurement and control device | |
| CN210007409U (en) | box-type substation and microgrid connection structure | |
| CN208285069U (en) | A kind of transformer substation communication power supply monitoring system | |
| CN207124489U (en) | A kind of Intelligent power distribution system of high RST transmission stability | |
| CN110571905A (en) | Distributed direct-current backup power supply device for station and operation and installation method thereof | |
| CN111697587A (en) | AC/DC power supply device | |
| CN210804515U (en) | Scenic spot intelligent power dispatching system | |
| CN219760641U (en) | Power supply apparatus | |
| CN218386936U (en) | Alternating current power supply system for transformer substation applying distributed energy storage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |