CN109256849B - Hotel power distribution system provided with diesel generator and application method thereof - Google Patents
Hotel power distribution system provided with diesel generator and application method thereof Download PDFInfo
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- CN109256849B CN109256849B CN201811344136.9A CN201811344136A CN109256849B CN 109256849 B CN109256849 B CN 109256849B CN 201811344136 A CN201811344136 A CN 201811344136A CN 109256849 B CN109256849 B CN 109256849B
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- 238000000034 method Methods 0.000 title claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- 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
-
- 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
- H02J9/08—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 requiring starting of a prime-mover
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a hotel power distribution system provided with a diesel generator, which comprises a mains supply high-voltage incoming line and a diesel generator, wherein the two mains supply high-voltage incoming lines are respectively powered by a power transformer through two sections of low-voltage buses; the second power transformer leads to one branch of the double-power transfer switch and is used as one line of mains supply of the double power supply; the diesel generator leads out two binary digits of the double-power transfer switch and is used as a standby power inlet wire of the double power supply; the low-voltage outgoing circuit breaker of all three-level loads on the low-voltage bus is provided with a voltage-losing release, and when two paths of mains supply are powered off simultaneously, the voltage-losing release acts to disconnect all three-level loads; at the moment, the low-voltage bus-bar switch is closed, the diesel generator is started to supply power, and after the voltage is stable, the three-level load is manually closed in sequence until the diesel generator is full. Compared with the prior art, the utilization efficiency of the diesel generator is fully improved, the power supply reliability of the hotel is improved, and the normal operation of the hotel is guaranteed to the greatest extent.
Description
Technical Field
The invention belongs to the field of civil power distribution, and particularly relates to a hotel power distribution system provided with a diesel generator.
Background
In addition to the normal two-way mains supply, diesel generators are generally added to the high-grade hotel projects. The purpose is when two paths of mains supply all outage's condition, provides the third path power by diesel generator, and the important load power supply guarantees the normal operation of hotel.
The diesel generator is arranged in the high-grade hotel to improve the power supply reliability of the primary and secondary important loads, so that the capacity of the diesel generator is generally determined according to the total capacity of the primary and secondary loads of the hotel. The conventional hotel low-voltage distribution mode is to arrange independent buses for one-stage and two-stage loads, and supply power by two paths of commercial power and three paths of diesel generators, and the other three-stage loads are additionally provided with buses which are respectively supplied with power by two paths of commercial power. The power distribution mode guarantees the power supply reliability of the primary and secondary loads, but when two paths of commercial power are in a power failure state, the diesel generator can only supply the primary and secondary loads and can not supply power to the tertiary loads. Under the normal operation state of the hotel, the first and second loads can not be fully started, so that the capacity of the diesel generator is redundant, but because of the limitation of a power distribution mode, the redundant capacity of the diesel generator can not be utilized to supply power to the third load, and the normal operation of the hotel can be influenced to a certain extent.
Disclosure of Invention
In order to overcome the defect that a diesel generator cannot supply power to three-level loads when two paths of commercial power are disconnected in the existing power distribution mode of a high-grade hotel, the invention provides a hotel power distribution system provided with the diesel generator, the diesel generator arranged in the hotel can be more effectively utilized under the condition of two paths of commercial power outage, and the three-level loads are carried as much as possible on the premise of guaranteeing the reliability of one-level and two-level load power supply, so that the purpose of guaranteeing the hotel power supply under the condition of the commercial power outage to the maximum extent is achieved, and the normal operation of the hotel is guaranteed to the maximum extent.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the hotel power distribution system provided with the diesel generator comprises a first path of commercial power high-voltage incoming line, a second path of commercial power high-voltage incoming line and the diesel generator; wherein: the first line of commercial power high-voltage inlet is connected with a first high-voltage bus through a first line of high-voltage inlet circuit breaker, then a first line of power transformer is led out through the first line of high-voltage outlet circuit breaker, after the voltage is reduced, a first low-voltage bus is led out through a first line of power transformer total outlet circuit breaker, and the first low-voltage bus is shared by a primary load, a secondary load and a tertiary load; the second line of mains supply high-voltage inlet wire is connected with a second high-voltage bus through a second line of high-voltage inlet wire breaker, then the second line of power supply transformer is led out through the second line of high-voltage outlet wire breaker, and the second line of power supply transformer main outlet wire breaker is led out to the first split position of the double-power supply change-over switch to serve as one line of mains supply inlet wire of the double power supply; the diesel generator leads to the second branch of the double-power change-over switch through a diesel generator total outlet breaker to serve as the other path of standby power inlet wire of the double power; the outgoing line of the dual-power transfer switch leads to a second low-voltage bus which is shared by a first load, a second load and a third load.
Preferably, the first low voltage bus and the second low voltage bus are connected by a low voltage connection switch.
Preferably, the first low-voltage bus is provided with four groups of outlet loops, which are respectively: a second primary load loop led out by a fifth low-voltage outlet circuit breaker; a second secondary load loop led out by a sixth low-voltage outgoing circuit breaker; a third three-way three-level load loop led out by a seventh low-voltage outlet circuit breaker provided with a voltage-loss release; and a fourth three-stage load loop led out by an eighth low-voltage outlet circuit breaker provided with a voltage-loss release.
Preferably, the second low-voltage bus is provided with four groups of outlet loops, which are respectively: a first path of three-stage load loop led out by a first path of low-voltage outgoing circuit breaker provided with a voltage-losing release; a second three-stage load loop led out by a second low-voltage outlet circuit breaker provided with a voltage-losing release; a first secondary load loop led out by a third low-voltage outlet circuit breaker; and a first path of first-stage load loop led out by a fourth path of low-voltage outgoing line circuit breaker.
Compared with a hotel power distribution system provided with a diesel generator in the prior art, the hotel power distribution system has the following beneficial effects: according to the invention, the diesel generator can carry three-level loads as much as possible on the premise of guaranteeing the power supply reliability of the first-level load and the second-level load, so that the utilization efficiency of the diesel generator is fully improved, the power supply reliability of a hotel is improved, and the normal operation of the hotel is guaranteed to the greatest extent.
Drawings
FIG. 1 is a schematic diagram of a hotel power distribution system provided with a diesel generator;
in the figure: 11. a first line of commercial power is led in at high voltage; 12. a first high-voltage incoming circuit breaker; 13. a first high voltage bus; 14. a first high-voltage outgoing circuit breaker; 15. a first path of power transformer; 16. a first path of power transformer total outgoing line breaker; 17. a first low voltage bus; 21. a second line of commercial power high-voltage wire inlet; 22. a second high-voltage incoming circuit breaker; 23. a second high voltage bus; 24. a second high-voltage outgoing circuit breaker; 25. a second power transformer; 26. a second power transformer total line breaker; 27. a second low voltage bus; 31. a diesel generator; 32. a diesel generator total outlet breaker; 4. a dual power transfer switch; 41. the first split of the dual power transfer switch; 42. a second division of the dual power transfer switch; 5. a low voltage tie switch between the first low voltage bus and the second low voltage bus; 61. a first low-voltage outgoing circuit breaker provided with a voltage-losing release; 62. a second low-voltage outgoing circuit breaker provided with a voltage-losing release; 63. a third low-voltage outgoing circuit breaker; 64. a fourth low-voltage outgoing circuit breaker; 65. a fifth low-voltage outgoing circuit breaker; 66. a sixth low-voltage outgoing circuit breaker; 67. a seventh low-voltage outgoing circuit breaker provided with a voltage-losing release; 68. an eighth low-voltage outgoing circuit breaker provided with a voltage-losing release; 71. a first path of three-stage load; 72. a second path of three-stage load; 73. a first secondary load; 74. a first path of primary load; 75. a second path of primary load; 76. a second path of secondary load; 77. a third path of three-stage load; 78. and a fourth path of three-stage load.
Detailed Description
As shown in fig. 1, the hotel power distribution system provided with the diesel generator comprises a first path of commercial power high-voltage incoming line 11, a second path of commercial power high-voltage incoming line 21 and the diesel generator 31; wherein: the first line of commercial power high voltage incoming line 11 is connected with a first high voltage bus 13 through a first line of high voltage incoming line breaker 12, then a first line of power transformer 15 is led out through a first line of high voltage outgoing line breaker 14, after the voltage is reduced, a first low voltage bus 17 is led out through a first line of power transformer total outgoing line breaker 16, the first low voltage bus is shared by a primary load, a secondary load and a tertiary load, and four groups of outgoing line loops are respectively: a first path of three-stage load 71 loop led out by a first path of low-voltage outgoing circuit breaker 61 provided with a voltage loss release; a second three-stage load 72 loop led out by a second low-voltage outlet circuit breaker 62 provided with a voltage-losing release; a first secondary load 73 loop led out through a third low-voltage outlet circuit breaker 63; a first primary load 74 loop is routed through the fourth low-voltage outlet circuit breaker 64.
The second high-voltage incoming line 21 is connected with a second high-voltage bus 23 through a second high-voltage incoming line breaker 22, and then led to a second power transformer 25 through a second high-voltage outgoing line breaker 24, and a second power transformer total outgoing line breaker 26 leads to a first branch 41 of a double-power transfer switch of the double-power transfer switch 4 to serve as one line of incoming line of the double-power; the diesel generator 31 leads to the second branch 42 of the dual power transfer switch 4 through the diesel generator total outlet breaker 32 as the other standby power inlet of the dual power. The power supply is supplied by mains supply when the dual power transfer switch is switched to the first branch 41 of the dual power transfer switch and by a diesel generator when the dual power switch is switched to the second branch 42 of the dual power transfer switch. The outgoing lines of the dual-power transfer switch lead out a second low-voltage bus 27, and the second low-voltage bus 27 is shared by a first load, a second load and a third load, and four groups of outgoing line loops are respectively: a second primary load 75 loop led out through the fifth low-voltage outgoing circuit breaker 65; a second secondary load 76 loop led out through the sixth low-voltage outlet circuit breaker 66; a third three-way three-level load 77 loop led out by a seventh low-voltage outlet circuit breaker 67 provided with a voltage-losing release; a fourth three-stage load 78 loop is routed through the eighth low-voltage outlet circuit breaker 68 equipped with a loss-in-voltage release.
The first low-voltage bus and the second low-voltage bus are in low-voltage communication through a low-voltage communication switch 5.
When normal power supply is performed, the dual-power transfer switch is switched to a first split position, the low-voltage interconnection switch is in an off state, and two paths of commercial power supply respectively supply power for the first low-voltage bus and the second low-voltage bus; when the single-circuit commercial power is powered off, the double-power transfer switch is switched to the first branch position under the assumption that the first-circuit commercial power is powered off, the low-voltage interconnection switch is in a closed state, and the second-circuit commercial power supplies power for the first low-voltage bus and the second low-voltage bus.
When two paths of commercial power are in a power-off state, the operation is as follows: the first power transformer and the second power transformer lose electricity, at the moment, the total outlet circuit breaker of the diesel generator is switched on, the double-power transfer switch is switched to the second branch of the double-power transfer switch, the low-voltage interconnection switch is switched on, and the first low-voltage bus and the second low-voltage bus are powered by the diesel generator. And because the normal power supply (two mains supply) loses power before, the first, second, seventh and eighth low-voltage outgoing circuit breakers with the voltage-losing release are operated due to voltage loss, the circuit breakers are disconnected, the first to fourth three-level loads are cut off, and the two low-voltage buses only have four-level and two-level loads at the moment. The capacity of the diesel generator is determined according to the total capacity of the primary load and the secondary load, and when the hotel operates normally, the primary load and the secondary load are not all started, so that the capacity of the diesel generator is redundant under the condition that two paths of commercial power are powered off. At the moment, the four-way three-level load is manually put into load according to the order from important to unimportant, namely, the first, second, seventh and eighth low-voltage outgoing circuit breakers with the voltage-losing tripper are sequentially manually switched on until the voltage-losing tripper immediately acts when the circuit breakers are manually switched on, and the circuit breakers are opened, so that the operation is completed. At the moment, the diesel generator carries all primary loads, secondary loads and part of tertiary loads, and works close to full load.
Claims (2)
1. The utility model provides a use method of hotel power distribution system with diesel generator which characterized in that: including first way commercial power high voltage inlet wire, second way commercial power high voltage inlet wire and diesel generator, wherein: the first line of commercial power high-voltage inlet is connected with a first high-voltage bus through a first line of high-voltage inlet circuit breaker, then a first line of power transformer is led out through the first line of high-voltage outlet circuit breaker, after the voltage is reduced, a first low-voltage bus is led out through a first line of power transformer total outlet circuit breaker, and the first low-voltage bus is shared by a primary load, a secondary load and a tertiary load; the second line of mains supply high-voltage inlet wire is connected with a second high-voltage bus through a second line of high-voltage inlet wire breaker, then the second line of power supply transformer is led out through the second line of high-voltage outlet wire breaker, and the second line of power supply transformer main outlet wire breaker is led out to the first split position of the double-power supply change-over switch to serve as one line of mains supply inlet wire of the double power supply; the diesel generator leads to the second branch of the double-power change-over switch through a diesel generator total outlet breaker to serve as the other path of standby power inlet wire of the double power; the outgoing line of the dual-power transfer switch leads out a second low-voltage bus which is shared by a primary load, a secondary load and a tertiary load;
the first low-voltage bus is provided with four groups of outlet loops, which are respectively: a second primary load loop led out by a fifth low-voltage outlet circuit breaker; a second secondary load loop led out by a sixth low-voltage outgoing circuit breaker; a third three-way three-level load loop led out by a seventh low-voltage outlet circuit breaker provided with a voltage-loss release; a fourth three-stage load loop led out by an eighth low-voltage outlet circuit breaker provided with a voltage-loss release;
the second low-voltage bus is provided with four groups of outlet loops, which are respectively: a first path of three-stage load loop led out by a first path of low-voltage outgoing circuit breaker provided with a voltage-losing release; a second three-stage load loop led out by a second low-voltage outlet circuit breaker provided with a voltage-losing release; a first secondary load loop led out by a third low-voltage outlet circuit breaker; a first primary load loop led out by a fourth low-voltage outgoing circuit breaker;
when normal power supply is performed, the dual-power transfer switch is switched to a first split position, the low-voltage interconnection switch is in an off state, and two paths of commercial power supply respectively supply power for the first low-voltage bus and the second low-voltage bus; when the single-circuit commercial power is powered off, assuming that the first-circuit commercial power is powered off, the dual-power transfer switch is switched to a first split position, the low-voltage interconnection switch is in a closed state, and the second-circuit commercial power supplies power for the first low-voltage bus and the second low-voltage bus; when two paths of commercial power are in a power-off state, the operation is as follows: the first power transformer and the second power transformer lose electricity, at the moment, the total outlet circuit breaker of the diesel generator is switched on, the double-power transfer switch is switched to the second branch of the double-power transfer switch, the low-voltage interconnection switch is switched on, and the first low-voltage bus and the second low-voltage bus are powered by the diesel generator; the normal power supply is powered off before, the first, second, seventh and eighth low-voltage outgoing circuit breakers with the voltage-losing release are operated due to voltage losing, the circuit breakers are disconnected, the first to fourth three-level loads are cut off, and the two low-voltage buses only have four first-level and second-level loads at the moment; the capacity of the diesel generator is determined according to the total capacity of the primary load and the secondary load, and when the hotel operates normally, the primary load and the secondary load are not all started, so that the capacity of the diesel generator has redundancy under the condition that two paths of commercial power are cut off; at the moment, the four-way three-level load is manually put into load according to the order from important to unimportant, namely, the first, second, seventh and eighth low-voltage outgoing circuit breakers with the voltage-losing tripper are sequentially manually switched on until the voltage-losing tripper immediately acts when the circuit breakers are manually switched on, and the circuit breakers are opened, so that the operation is completed.
2. The method of using a hotel power distribution system provided with a diesel generator as claimed in claim 1, wherein: the first low-voltage bus and the second low-voltage bus carry out low-voltage communication through a low-voltage communication switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344136.9A CN109256849B (en) | 2018-11-13 | 2018-11-13 | Hotel power distribution system provided with diesel generator and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344136.9A CN109256849B (en) | 2018-11-13 | 2018-11-13 | Hotel power distribution system provided with diesel generator and application method thereof |
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| Publication Number | Publication Date |
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| CN109256849A CN109256849A (en) | 2019-01-22 |
| CN109256849B true CN109256849B (en) | 2024-03-12 |
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| CN201811344136.9A Active CN109256849B (en) | 2018-11-13 | 2018-11-13 | Hotel power distribution system provided with diesel generator and application method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350650B (en) * | 2019-07-05 | 2024-03-22 | 广西电网有限责任公司梧州供电局 | High-capacity high-reliability rapid power supply switching device and switching control method thereof |
| CN111416429A (en) * | 2020-04-13 | 2020-07-14 | 中国移动通信集团内蒙古有限公司 | Generator load method, apparatus, device and computer readable storage medium |
| CN112051503A (en) * | 2020-04-14 | 2020-12-08 | 中鹏机电有限公司 | Multi-path commercial power monitoring device for diesel generating set |
| CN116031924B (en) * | 2022-12-28 | 2024-04-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Current transformer station power system wiring and operation method with security section |
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