CN219458739U - Circulation-preventing GIS double-loop power supply control device - Google Patents
Circulation-preventing GIS double-loop power supply control device Download PDFInfo
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- CN219458739U CN219458739U CN202320233710.3U CN202320233710U CN219458739U CN 219458739 U CN219458739 U CN 219458739U CN 202320233710 U CN202320233710 U CN 202320233710U CN 219458739 U CN219458739 U CN 219458739U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model belongs to the technical field of GIS high-voltage switch equipment power supply, and particularly relates to an anti-circulation GIS double-loop power supply control device, wherein in a main loop, three wiring terminals on the input side of a common power supply air switch QF1 are connected with a power supply of a power distribution room I section, and three wiring terminals on the output side of the common power supply air switch QF1 are connected with three common power supply wiring terminals N on the input side of an intelligent change-over switch QS through a common power supply fuse FU 1; three wiring terminals on the input side of the standby power supply air-break QF2 are connected with a power supply of a second section of the power distribution room, and three wiring terminals on the output side of the standby power supply air-break QF2 are connected with three standby power supply wiring terminals R on the input side of an intelligent change-over switch QS through a standby power supply fuse FU2; the output side load binding post of the intelligent change-over switch QS is connected with the power terminal of the GIS control cabinet; in the secondary control loop, the intelligent controller PG is connected with the intelligent change-over switch QS through a controller connection terminal DX. According to the utility model, the intelligent change-over switch is additionally arranged, so that the circulation phenomenon is effectively avoided.
Description
Technical Field
The utility model belongs to the technical field of GIS high-voltage switch equipment power supply, and particularly relates to an anti-circulation GIS double-loop power supply control device.
Background
Because GIS high voltage switchgear is one of the most critical equipment in the garden power supply system, the AC220V control power supply used by components such as isolation disconnecting link, grounding disconnecting link and the like is double-loop power supply, and when any section of line breaks down, normal power supply to GIS can not be affected, and the safety factor of GIS high voltage switchgear is improved. As shown in fig. 1, original AC220V power supplies of GIS high-voltage switch equipment are respectively taken from sections I and II of a substation power transformation and distribution room, the section I power supply enters a 1# junction box wiring terminal and is connected to a 2# junction box wiring terminal in parallel through a 4mm cable, the method sequentially connects the 9# junction box wiring terminal in parallel in a jumper manner, and the 9# junction box wiring terminal is finally connected with the section II power supply, so that the sections I and II of the substation power transformation and distribution room can form a current ring network through the 1-9# junction box wiring terminal and the 4mm jumper cable. In the actual operation process, the operation loads of the sections I and II of the station transformer and distribution room are unbalanced, the current difference between the sections I and II forms a circulation through the 1-9# junction box connecting terminal and the 4mm jumper cable, and the larger the load difference between the sections I and II is, the larger the circulation is formed. When great circulation passes through binding post and 4 mm's of small capacity cable, the condition that binding post and cable generate heat will appear, and long-time operation will lead to binding post to burn out and cable insulation damage hidden danger to take place, seriously influences the safety operation of GIS equipment and staff's personal safety.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides the loop-current-preventing GIS double-loop power supply control device, and the loop current phenomenon is effectively avoided by additionally arranging the intelligent change-over switch.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an anti-circulation GIS double-loop power supply control device, which comprises a control box P, a common power supply air-switch QF1, a common power supply fuse FU1, a standby power supply air-switch QF2 and a standby power supply fuse FU2; an intelligent change-over switch QS, an intelligent controller PG and a controller connecting terminal DX are installed in the control box P; in the main loop, three wiring terminals on the input side of the common power supply air-switch QF1 are connected with a power supply of a power distribution room I section, and three wiring terminals on the output side of the common power supply air-switch QF1 are connected with three common power supply wiring terminals N on the input side of an intelligent change-over switch QS through a common power supply fuse FU 1; three wiring terminals on the input side of the standby power supply air-break QF2 are connected with a power supply of a second section of the power distribution room, and three wiring terminals on the output side of the standby power supply air-break QF2 are connected with three standby power supply wiring terminals R on the input side of an intelligent change-over switch QS through a standby power supply fuse FU2; the output side load binding post of the intelligent change-over switch QS is connected with the power terminal of the GIS control cabinet; in the secondary control loop, the intelligent controller PG is connected with the intelligent change-over switch QS through a controller wiring terminal DX so as to control the on-off of the intelligent change-over switch QS.
Further, the GIS control cabinet power terminals are connected with other GIS control cabinet power terminals in parallel through wires.
Further, in the secondary control loop, two parallel circuits are connected through a fuse FU, one circuit comprises a common power supply binding post N, a controller binding post DX and an intelligent controller PG, and the intelligent controller PG is connected with the common power supply binding post N through the controller binding post DX; the other circuit comprises a standby power supply wiring terminal R, a controller wiring terminal DX and an intelligent controller PG, wherein the intelligent controller PG is connected with the standby power supply wiring terminal R through the controller wiring terminal DX.
Further, the intelligent controller PG is connected with the controller connection terminal DX to collect voltages of the common power supply loop and the standby power supply loop.
Further, the intelligent controller PG is connected with a Q1F contact and a Q2F contact of the intelligent change-over switch QS through a controller connection terminal DX, the Q1F contact is connected with a normal-close indicator lamp, and the Q2F contact is connected with a standby-close indicator lamp, where the normal-close indicator lamp and the standby-close indicator lamp are used for indicating the normal power supply loop and the standby power supply loop to be in a switching-on and switching-off state.
Compared with the prior art, the utility model has the following advantages:
according to the utility model, the intelligent change-over switch QS is additionally arranged in the main loop of the circulation-preventing GIS double-loop power supply control device, the power distribution room I-section power supply and the power distribution room II-section power supply are powered normally, the power distribution room I-section power supply is in a power transmission state after passing through the intelligent change-over switch QS, the power distribution room II-section power supply is in a standby state, and when the intelligent controller PG detects that the power distribution room I-section power supply has fault tripping, the intelligent change-over switch QS is switched, so that the power distribution room II-section power supply automatically resumes power transmission. Because the I-section power supply of the power distribution room and the II-section power supply of the power distribution room do not simultaneously supply power to the GIS control cabinet, the circulation formed between the I-section power supply and the II-section power supply of the power distribution room through the 1-9# GIS control cabinet is eliminated, and the hidden trouble that the wiring terminal and the cable heat is generated is avoided.
Drawings
FIG. 1 is a schematic electrical diagram of a main circuit of a control power supply of a conventional GIS high voltage switching device;
FIG. 2 is a schematic diagram of the main circuit of the anti-loop GIS dual-loop power control device according to the embodiment of the present utility model;
fig. 3 is an electrical schematic diagram of a secondary control loop of the anti-loop GIS dual-loop power control device according to an embodiment of the present utility model.
Fig. 4 is a schematic structural diagram of a dual loop power supply control device of an anti-loop GIS according to an embodiment of the present utility model.
The meaning represented by the numbers in the figures is:
1. the intelligent controller PG,2. Usual indicator lamp, 3. Standby indicator lamp, 4. Incoming line hole.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.
As shown in fig. 2, 3 and 4, the circulation-preventing GIS dual-loop power supply control device of the present embodiment includes a control box P, a common power supply air-on QF1, a common power supply fuse FU1, a standby power supply air-on QF2 and a standby power supply fuse FU2, and an intelligent change-over switch QS, an intelligent controller PG (1) and a controller connection terminal DX are installed in the control box P. In the main loop, three wiring terminals on the input side of the common power supply air-switch QF1 are connected with a power supply of a power distribution room I section, and three wiring terminals on the output side of the common power supply air-switch QF1 are connected with three common power supply wiring terminals N on the input side of an intelligent change-over switch QS through a common power supply fuse FU 1; three wiring terminals on the input side of the standby power supply air-break QF2 are connected with a power supply of a second section of the power distribution room, and three wiring terminals on the output side of the standby power supply air-break QF2 are connected with three standby power supply wiring terminals R on the input side of an intelligent change-over switch QS through a standby power supply fuse FU2; the output side load terminal of the intelligent change-over switch QS is connected with a GIS control cabinet power terminal, and the GIS control cabinet power terminal is connected with other GIS control cabinet power terminals in parallel through wires. In the secondary control loop, an intelligent controller PG (1) is connected with an intelligent change-over switch QS through a controller wiring terminal DX so as to control the on-off of the intelligent change-over switch QS. The intelligent controller PG (1) is combined with the intelligent change-over switch QS to control the GIS double-loop power supply, so that the circulation phenomenon is effectively avoided, and the intelligent controller PG (1) also has the functions of phase-loss, undervoltage and overvoltage protection, so that the power supply quality is higher.
The intelligent change-over switch QS of this embodiment has a fast change-over operation speed, and even in a very case, it will not cause two power supplies to be turned on at the same time, and can avoid the circulation phenomenon.
As shown in fig. 3, in the secondary control loop, two parallel circuits are connected through a fuse FU, one circuit comprises a common power supply terminal N, a controller wiring terminal DX and an intelligent controller PG (1), and the intelligent controller PG (1) is connected with the common power supply terminal N through the controller wiring terminal DX; the other circuit comprises a standby power supply wiring terminal R, a controller wiring terminal DX and an intelligent controller PG (1), wherein the intelligent controller PG (1) is connected with the standby power supply wiring terminal R through the controller wiring terminal DX. The intelligent controller PG (1) sends a common power supply closing signal (standby power supply closing signal) to the intelligent change-over switch QS, so that a common power supply binding post N (standby power supply binding post R) is connected, a distribution room I-section power supply (distribution room II-section power supply) is adopted to supply power to the GIS control cabinet, and the circulation phenomenon generated by simultaneous power supply of the distribution room I-section power supply and the distribution room II-section power supply is eliminated.
The intelligent controller PG (1) is connected with the controller wiring terminal DX to collect the voltages of the common power supply loop and the standby power supply loop and display the voltage values. When the intelligent controller PG (1) detects that the common power supply fails, the power supply is automatically switched to the standby power supply to supply power to the GIS control cabinet.
The intelligent controller PG (1) is connected with a Q1F contact and a Q2F contact of the intelligent change-over switch QS through a controller wiring terminal DX, the Q1F contact is connected with a normally-on indicator lamp 2, the Q2F contact is connected with a standby switch indicator lamp 3, and the normally-on indicator lamp 2 and the standby switch indicator lamp 3 are used for indicating the switching-on and switching-off states of a common power supply loop and a standby power supply loop.
The working principle is as follows:
the power distribution room I section power supply and the power distribution room II section power supply are both normally powered, the power distribution room I section power supply is in a power transmission state after passing through the intelligent change-over switch QS, the power distribution room II section power supply is in a standby state, and after the intelligent controller PG (1) detects that the power distribution room I section power supply breaks down and trips, the intelligent change-over switch QS is switched, so that the power distribution room II section power supply automatically resumes power transmission. Because the power supply of the power distribution room I section and the power supply of the power distribution room II section do not simultaneously supply power to the GIS control cabinet, the circulation phenomenon is effectively avoided; meanwhile, some conditions for increasing loads of two sections of buses of the station power transformation and distribution room are reduced, strict load balance of the two sections of buses is not required, and each section of bus has a certain load imbalance development space.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The use of the terms "a" or "an" and the like in the description and in the claims does not necessarily imply a limitation on the amount. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.
Claims (5)
1. The circulation-preventing GIS double-loop power supply control device is characterized by comprising a control box P, a common power supply air-on QF1, a common power supply fuse FU1, a standby power supply air-on QF2 and a standby power supply fuse FU2; an intelligent change-over switch QS, an intelligent controller PG and a controller connecting terminal DX are installed in the control box P; in the main loop, three wiring terminals on the input side of the common power supply air-switch QF1 are connected with a power supply of a power distribution room I section, and three wiring terminals on the output side of the common power supply air-switch QF1 are connected with three common power supply wiring terminals N on the input side of an intelligent change-over switch QS through a common power supply fuse FU 1; three wiring terminals on the input side of the standby power supply air-break QF2 are connected with a power supply of a second section of the power distribution room, and three wiring terminals on the output side of the standby power supply air-break QF2 are connected with three standby power supply wiring terminals R on the input side of an intelligent change-over switch QS through a standby power supply fuse FU2; the output side load binding post of the intelligent change-over switch QS is connected with the power terminal of the GIS control cabinet; in the secondary control loop, the intelligent controller PG is connected with the intelligent change-over switch QS through a controller wiring terminal DX so as to control the on-off of the intelligent change-over switch QS.
2. The circulation-preventing GIS dual-loop power supply control device according to claim 1, wherein the GIS control cabinet power supply terminal is connected in parallel with the remaining GIS control cabinet power supply terminals through a wire.
3. The circulation-preventing GIS double-loop power supply control device according to claim 1, wherein in the secondary control loop, two parallel circuits are connected through a fuse FU, one circuit comprises a common power supply terminal N, a controller wiring terminal DX and an intelligent controller PG, and the intelligent controller PG is connected with the common power supply terminal N through the controller wiring terminal DX; the other circuit comprises a standby power supply wiring terminal R, a controller wiring terminal DX and an intelligent controller PG, wherein the intelligent controller PG is connected with the standby power supply wiring terminal R through the controller wiring terminal DX.
4. The circulation-preventing GIS dual-loop power supply control device according to claim 1, wherein the intelligent controller PG collects the voltages of the common power supply loop and the standby power supply loop by being connected with a controller connection terminal DX.
5. The circulation-preventing GIS dual-loop power supply control device according to claim 1, wherein the intelligent controller PG is connected to a Q1F contact and a Q2F contact of the intelligent change-over switch QS through a controller connection terminal DX, the Q1F contact is connected to a normal-close indicator lamp, and the Q2F contact is connected to a standby-close indicator lamp, where the normal-close indicator lamp and the standby-close indicator lamp are used for indicating a normal power supply loop and a standby power supply loop switching-on/off state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320233710.3U CN219458739U (en) | 2023-02-16 | 2023-02-16 | Circulation-preventing GIS double-loop power supply control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320233710.3U CN219458739U (en) | 2023-02-16 | 2023-02-16 | Circulation-preventing GIS double-loop power supply control device |
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| Publication Number | Publication Date |
|---|---|
| CN219458739U true CN219458739U (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320233710.3U Active CN219458739U (en) | 2023-02-16 | 2023-02-16 | Circulation-preventing GIS double-loop power supply control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219458739U (en) |
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- 2023-02-16 CN CN202320233710.3U patent/CN219458739U/en active Active
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