CN111987790B - Get electric installation in looped netowrk cabinet - Google Patents
Get electric installation in looped netowrk cabinet Download PDFInfo
- Publication number
- CN111987790B CN111987790B CN202010799408.5A CN202010799408A CN111987790B CN 111987790 B CN111987790 B CN 111987790B CN 202010799408 A CN202010799408 A CN 202010799408A CN 111987790 B CN111987790 B CN 111987790B
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- module
- power supply
- energy
- voltage
- energy storage
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- 238000009434 installation Methods 0.000 title claims description 4
- 238000004804 winding Methods 0.000 claims abstract description 47
- 238000004146 energy storage Methods 0.000 claims abstract description 31
- 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
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000012806 monitoring device Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003745 diagnosis 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Abstract
The invention discloses an electricity 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 take electricity online when the ring main unit high-voltage system works normally in a live mode, and can realize mutual standby among a plurality of power supply windings; any winding can be rapidly switched to another low-voltage winding for power supply when faults occur, and even if faults of the ring main unit high-voltage system occur within a period of time of power failure, the energy storage module and the automatic switching module can still supply power for the ring main unit on-line monitoring device, so that on-line monitoring of the ring main unit full fault period is realized. 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 the on-line monitoring device with different power supply requirements.
Description
Technical Field
The invention belongs to the technical field of power distribution equipment, and particularly relates to an electricity 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 switching stations, ring main units, distribution stations, preassembled box transformer stations and the like of distribution lines, and can greatly improve the power supply reliability and economy of the power distribution network and reduce the labor intensity. However, in the long-term operation of the ring main unit, cable lap joint faults, air chamber faults, operating mechanism faults, lightning arrester faults and the like occur in the process of the ring main unit after installation and operation due to various objective reasons, so that hidden danger is brought to the reliable operation of a power grid. Under such a background, the on-line monitoring technology of the ring main unit has the advantages that the high-sensitivity sensor is utilized to continuously extract information parameters capable of reflecting the insulation state of the electrical equipment, the intelligent technology is applied according to the magnitude and the change trend of the values of the information parameters, the temperature of a cable of the ring main unit, the temperature of a bus pile head, the environment temperature and humidity of the ring main unit, the characteristics of an operating mechanism and the micro water and density of SF6 gas in an air chamber are monitored in real time, the electric quantity parameters of each ring main unit can be acquired in real time, the quality of electric energy is analyzed and managed, the intelligent ring main unit monitor makes predictions on the reliability of the equipment and the residual life, an overhaul scheme is formulated according to the diagnosis result, a basis is provided for state maintenance, and the reliable power supply of the on-line monitoring device is a vital link.
But when the prior art monitors the ring main unit online, the ring main unit power failure caused by the system fault often occurs, and the ring main unit detection effect and the monitoring data are affected, so that the design of the ring main unit power supply device which can reliably supply power to the ring main unit, realize the online monitoring of the ring main unit full fault period and is compatible with the power supply of the online monitoring device with different power supply requirements is particularly important.
Disclosure of Invention
The invention provides an electricity taking device in a ring main unit, which aims to solve the problem that the ring main unit cannot be monitored on line under the condition of power failure of the ring main unit in the prior art.
The invention adopts the following technical scheme:
an electricity taking device in a ring main unit, which is characterized in that: the energy storage 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 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 energy taking module is used for obtaining 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 preferable scheme, the energy taking 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 with high-voltage energy outside the ring main unit;
the first low-voltage winding and the second low-voltage winding are used for connecting an automatic switching module;
the third low-voltage winding is used for connecting the energy storage module.
Preferably, the automatic switching module comprises a detection device and a change-over switch, wherein the detection device is used for automatically identifying any low-voltage winding fault in the energy taking module, and the change-over switch is used for isolating the fault low-voltage winding.
Preferably, the AC power module includes a multi-tap transformer, the DC power 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.
As a preferable scheme, the energy storage module comprises a bidirectional power converter and an energy storage block, the bidirectional alternating current converter is respectively connected with the energy taking module and the automatic switching module, and the energy storage block consists of a storage battery pack and a super capacitor.
As a preferable scheme, the primary winding of the multi-tap transformer has fixed turns, rated voltage is 220V, the secondary winding is provided with a plurality of taps, the output at least comprises 220V and 110V alternating current voltages, and a standby winding is reserved.
Preferably, the plurality of AC/DC converters are connected in parallel with each other in common bus, the rated voltage of the AC side is 220V, the output voltage of the DC side at least comprises 110V and 48V DC voltages, and the standby AC/DC module is reserved.
The beneficial effects are that: the power taking device in the ring main unit can take power on line when the ring main unit high-voltage system works normally in a live mode, and meanwhile a plurality of power supply windings can be mutually reserved; any winding can be rapidly switched to another low-voltage winding for power supply when faults occur, and even if faults of the ring main unit high-voltage system occur within a period of time of power failure, the energy storage module and the automatic switching module can still supply power for the ring main unit on-line monitoring device, so that on-line monitoring of the ring main unit full fault period is realized. 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 the on-line monitoring device with different power supply requirements.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a simplified view of the structure of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
examples:
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 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 obtaining 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 output ends with different power supply requirements;
the energy storage module E is used for storing and outputting electric energy.
As a preferred scheme, 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 an energy storage module E.
The automatic switching module B comprises a detection device B1 and a change-over switch B2, wherein the detection device B1 is used for automatically identifying any low-voltage winding fault in the energy taking module A, and the change-over switch B2 is used for isolating the faulty 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, the bidirectional alternating current 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.
In the implementation, the number of turns of a primary winding of the multi-tap transformer is fixed, the rated voltage is 220V, the secondary winding is provided with a plurality of taps, the output at least comprises 220V and 110V alternating voltage, a standby winding is reserved, and the standby winding can be provided with taps according to actual requirements; the multiple AC/DC converters are connected in parallel with common buses, the rated voltage of the alternating current side is 220V, the output voltage of the direct current side at least comprises 110V and 48V direct current voltages, and a standby AC/DC module is reserved and can be used as an AC/DC module for increasing the phase-to-phase ratio of other voltages.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (1)
1. Get electric installation in looped netowrk cabinet, its characterized in that: the energy storage device 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 obtaining 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 output ends with different power supply requirements;
the energy storage module (E) is used for storing and outputting electric energy;
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 being connected with an 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 change-over switch (B2), wherein the detection device (B1) is used for automatically identifying any low-voltage winding fault in the energy taking module (A), and the change-over 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), the bidirectional power 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;
the primary winding of the multi-tap transformer has fixed turns, rated voltage is 220V, the secondary winding is provided with a plurality of taps, the output of the transformer at least comprises 220V and 110V alternating voltage, and a standby winding is reserved;
the standby winding can be subjected to tap setting according to actual requirements; the multiple AC/DC converters are connected in parallel with common buses, the rated voltage of the alternating current side is 220V, the output voltage of the direct current side at least comprises 110V and 48V direct current voltages, and a standby AC/DC module is reserved and can be used as an AC/DC module for increasing the phase-to-phase ratio of other voltages.
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 CN111987790A (en) | 2020-11-24 |
| CN111987790B true CN111987790B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010799408.5A Active CN111987790B (en) | 2020-08-11 | 2020-08-11 | Get electric installation in looped netowrk cabinet |
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| CN111987790A (en) | 2020-11-24 |
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