CN209642329U - A kind of 400V power supply-distribution system controllably powered automatically - Google Patents
A kind of 400V power supply-distribution system controllably powered automatically Download PDFInfo
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- CN209642329U CN209642329U CN201920348968.1U CN201920348968U CN209642329U CN 209642329 U CN209642329 U CN 209642329U CN 201920348968 U CN201920348968 U CN 201920348968U CN 209642329 U CN209642329 U CN 209642329U
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Abstract
The utility model relates to a kind of 400V power supply-distribution systems controllably powered automatically, including two sections of medium voltage sides and machine bus, the end of incoming cables of every section of medium voltage side and machine bus with diesel-driven generator and 10kV alternating current by being connected respectively after breaker, network interconnecting circuit and isolated hand car are connected between two sections of medium voltage sides and machine bus, the leading-out terminal of two sections of medium voltage sides and machine bus respectively passes sequentially through breaker respectively, it is connected after transformer and low-pressure side breaker with two sections of low-pressure side bus, low-pressure side network interconnecting circuit there are two being also connected between two sections of low-pressure side bus, two low-pressure side network interconnecting circuits and it is connected to two sections of medium voltage sides and the low-pressure side breaker of the leading-out terminal of machine bus is connected with programmable logic controller (PLC) PLC, feeder line extremely loads after the leading-out terminal of two sections of low-pressure side bus passes through low-pressure side breaker.Compared with prior art, the utility model has many advantages, such as energy conservation, powers flexible.
Description
Technical field
The utility model relates to electrical power supply and distribution technical fields, more particularly, to a kind of 400V controllably to power automatically for matching
Electric system.
Background technique
Reliably, reasonably 400V electric power safeguard system strategy is to guarantee that electric system can get around failure in failure automatically
Point continues to where the core of important load normal power supply.
The electrical power distribution system more demanding for important, complicated, power supply continuity needs in the event of a failure certainly
Dynamic switching route, bypass fault point continues to power in time, a kind of various events for being likely to occur in electrical power distribution system
Barrier operating condition simultaneously provides the mesolow side distribution system of solution and urgently develops.
Utility model content
The purpose of this utility model is exactly to provide a kind of automatic controllable to overcome the problems of the above-mentioned prior art
The 400V power supply-distribution system of power supply.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of 400V power supply-distribution system controllably powered automatically, including two sections of medium voltage sides and machine bus, every section of medium pressure
The end of incoming cables of side and machine bus with diesel-driven generator and 10kV alternating current by being connected respectively after breaker, two sections of medium pressure sides
And network interconnecting circuit and isolated hand car are connected between machine bus, the leading-out terminal difference of two sections of medium pressure sides and machine bus is respective
It is connected after passing sequentially through the breaker, transformer and low-pressure side breaker with two sections of low-pressure side bus, two sections of low pressure
It is also connected between side bus there are two low-pressure side network interconnecting circuit, two low-pressure side network interconnecting circuits and is connected to two sections of institutes
The low-pressure side breaker for stating medium voltage side and the leading-out terminal of machine bus is connected with programmable logic controller (PLC) PLC, and two sections
The leading-out terminal of the low-pressure side bus passes through feeder line after the low-pressure side breaker to load.
Further, model S7-300 or S7-400 used by the programmable logic controller (PLC) PLC.
Further, the coil ratio of the transformer is 25:1.
Further, the transformer is dry-type transformer.
Further, the diesel-driven generator is made of diesel engine, generator, fuel tank, battery, the generator by
Cylinder, piston, cylinder head, inlet valve, exhaust valve and piston pin are constituted.
Further, medium pressure side and machine bus and the low-pressure side bus by flat rectangular body shape copper bar or aluminium
Row is made.
Compared with prior art, the utility model has the advantage that
(1) energy saving, the 400V power supply-distribution system in the utility model includes two sections of medium voltage sides and machine bus, every section of medium voltage side
And the end of incoming cables of machine bus, by being connected respectively with diesel-driven generator and 10kV alternating current after breaker, simultaneously machine is female for two sections of medium voltage sides
It is connected with network interconnecting circuit and isolated hand car between line, the leading-out terminal of two sections of medium voltage sides and machine bus respectively passes sequentially through disconnected respectively
It is connected after road device, transformer and low-pressure side breaker with two sections of low-pressure side bus, is also connected between two sections of low-pressure side bus
Two low-pressure side network interconnecting circuits, two low-pressure side network interconnecting circuits and the leading-out terminal for being connected to two sections of medium voltage sides and machine bus
Low-pressure side breaker is connected with programmable logic controller (PLC) PLC, and the leading-out terminal of two sections of low-pressure side bus is disconnected by low-pressure side
Feeder line can flexibly power for the power supply-distribution system of 400V, be more energy-saving and environmentally friendly to loading after the device of road.
(2) power supply is flexible, the 400V distribution system in the utility model, due to taking circuit breaker multiple levels, and with symmetrical
Bus is attached, and can adjust breaker according to user demand and actual condition, in certain loading range, power supply spirit
It is living, more practical and actual complicated power utilization environment.
Detailed description of the invention
In order to further elucidate the utility model each embodiment the above and other advantages and features, will with reference to attached drawing come
The more specific description of each embodiment of the utility model is presented.It is appreciated that these attached drawings only describe the allusion quotation of the utility model
Type embodiment, therefore be not to be regarded as being restriction on its scope.Also, the relative position of various pieces shown in the accompanying drawings and
Size is exemplary, and is not to be construed as the position uniquely determined between various pieces or size relationship.
Fig. 1 is the overall structure diagram of the utility model；
In figure, 1, medium voltage side and machine bus；2, breaker；3, network interconnecting circuit；4, isolated hand car；5, transformer；6, low
Press side breaker；7, low-pressure side bus；8, low-pressure side network interconnecting circuit；9, programmable logic controller (PLC) PLC.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is a part of the embodiment of the utility model, rather than is all implemented
Example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained all should belong to the range of the utility model protection.
Embodiment
It is as shown in Figure 1 the corresponding embodiment of the technical solution of the utility model, which includes pressing in two sections
The end of incoming cables of side and machine bus 1, every section of medium voltage side and machine bus 1 by after breaker 2 respectively with diesel-driven generator and the city 10kV
It is electrically connected and connects, network interconnecting circuit 3 and isolated hand car 4, two sections of medium voltage sides and machine mother are connected between two sections of medium voltage sides and machine bus 1
The leading-out terminal of line 1 respectively pass sequentially through respectively after breaker, transformer 5 and low-pressure side breaker 6 with two sections of 7 phases of low-pressure side bus
Connection, transformer 5 can select dry-type transformer or oil-immersed transformer, be also connected between two sections of low-pressure side bus 7 there are two
Low-pressure side network interconnecting circuit 8, two low-pressure side network interconnecting circuits 8 and the leading-out terminal for being connected to two sections of medium voltage sides and machine bus 1
Low-pressure side breaker 6 is connected with programmable logic controller (PLC) PLC9, model S7-300 or S7-400 used by PLC9,
Feeder line is to loading after the leading-out terminal of two sections of low-pressure side bus 7 passes through low-pressure side breaker 6, and diesel-driven generator is by diesel engine, power generation
Machine, fuel tank, battery composition, generator are made of cylinder, piston, cylinder head, inlet valve, exhaust valve and piston pin.
In the present embodiment, model S7-300 used by PLC9, the coil ratio of transformer 5 is 25:1, concrete kind
Type is that dry-type transformer, medium voltage side and machine bus 1 are made with low-pressure side bus 7 of copper bar or the aluminium row of flat rectangular body shape.
The following are the analyses of the specific work process of the technical solution of the utility model:
As shown in Figure 1, performing an analysis by taking transformer group TA and TB as an example, the switch logic of remaining transformer group is herewith.In
When normal operation, transformer TA and TB are mutually backups, and are segmented below each comfortable 50% load factor and run alone, if a wherein change
Depressor power supply output failure (include: 10kV bus-bar fault, 10kV network interconnecting circuit failure, transformer inlet wire failure, transformer from
Die barrier or low pressure incoming breaker faults itself etc.), in addition a transformer will undertake whole end loads.QF1~QF4 tetra-
Interlocking between platform breaker controlled by programmable logic controller (PLC) (PLC), it can be achieved that a whole set of low-voltage distribution system from
Throw runback, from pitcher is multiple and manually switching, reset function.
When normal operation, two-way 10kV alternating current gives transformer TA and TB to power respectively, two transformer sectional independent operatings,
It is mutually backups.Low pressure total input-wire circuit breaker Q F1 and QF2 are in "on" position, and low voltage liaison net circuit breaker Q F3 is in separating brake shape
State, QF4 are in "on" position.Wherein QF1~QF3 band GPF (General Protection False function, (this switch is only in QF3 event without defencive function by QF4
When barrier maintenance, two sections of low-voltage bus bars are separated, play buffer action).
1 low-voltage circuit breaker operating status list of table
Operational mode is to answer from pitcher, when TA transformer low voltage power supply output failure, the output of its 0.4kV low-pressure side is caused to lose
Pressure (judgment basis is for low pressure incoming breaker QF1 upper port without pressure, without stream), then decompression side total input-wire circuit breaker Q F1 should be certainly
Dynamic separating brake, after determining that QF1 has been in quartile, be delayed t1, then automatically engages combined floodgate operation by PLC control network interconnecting circuit QF3.
When TA transformer restores electricity, total input-wire circuit breaker Q F1 front-end detection device detection and confirmation input end voltage is
Normally, it is delayed after t2, order tripping network interconnecting circuit QF3 is sent by PLC.After determining that QF3 is in quartile, be delayed t3, then by
PLC control total input-wire circuit breaker Q F1 automatically engages combined floodgate operation.
When TB transformer low voltage power supply export failure, cause its 0.4kV low-pressure side output decompression (judgment basis be low pressure into
Line circuit breaker Q F2 upper port without pressure, without stream), then decompression side total input-wire circuit breaker Q F2 answers automatic brake separating, when determining that QF2 located
After quartile, be delayed t2, then automatically engages combined floodgate operation by PLC control network interconnecting circuit QF3.
When TB transformer restores electricity, total input-wire circuit breaker Q F2 front-end detection device detection and confirmation input end voltage is
Normally, it is delayed after t2, order tripping network interconnecting circuit QF3 is sent by PLC.After determining that QF3 is in quartile, be delayed t3, then by
PLC control total input-wire circuit breaker Q F2 automatically engages combined floodgate operation.
When TA and TB transformer breaks down simultaneously or when power down, causes the 0.4kV low-pressure side of this two transformer groups same
When export decompression, then QF1, QF2 automatic brake separating, QF3 keeps former gate-dividing state.When this two transformers restore electricity,
By manually closing a floodgate, QF3 still keeps former gate-dividing state by QF1, QF2.If TA and TB transformer restored electricity there are the time difference,
Then restored by following logic:
1.TA transformer first restores electricity, the detection of total input-wire circuit breaker Q F1 front-end detection device and confirmation input end voltage
Normally, it is delayed after t3, combined floodgate operation is automatically engaged by PLC control total input-wire circuit breaker Q F1, after determining that QF2 is in quartile,
Be delayed t1, then automatically engages combined floodgate operation by PLC control network interconnecting circuit QF3.Then, TB transformer also restores electricity, always into
Simultaneously confirmation input end voltage is normal for the detection of line circuit breaker Q F2 front-end detection device, is delayed after t2, sends order tripping by PLC
Network interconnecting circuit QF3.After determining that QF3 is in quartile, be delayed t3, then automatically engages conjunction by PLC control total input-wire circuit breaker Q F2
Lock operation.
2.TB transformer first restores electricity, the detection of total input-wire circuit breaker Q F2 front-end detection device and confirmation input end voltage
Normally, it is delayed after t3, combined floodgate operation is automatically engaged by PLC control total input-wire circuit breaker Q F2, after determining that QF1 is in quartile,
Be delayed t1, then automatically engages combined floodgate operation by PLC control network interconnecting circuit QF3.Then, TA transformer also restores electricity, always into
Simultaneously confirmation input end voltage is normal for the detection of line circuit breaker Q F1 front-end detection device, is delayed after t2, sends order tripping by PLC
Network interconnecting circuit QF3.After determining that QF3 is in quartile, be delayed t3, then automatically engages conjunction by PLC control total input-wire circuit breaker Q F1
Lock operation.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can be readily occurred in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this is practical
Novel protection scope should be subject to the protection scope in claims.
Claims (6)
1. a kind of 400V power supply-distribution system for controllably powering automatically, which is characterized in that including two sections of medium voltage sides and machine bus (1),
Every section of medium pressure side and the end of incoming cables of machine bus (1) by after breaker (2) respectively with diesel-driven generator and 10kV alternating current phase
Be connected with network interconnecting circuit (3) and isolated hand car (4) between connection, two sections of medium pressure sides and machine bus (1), two sections it is described in
The leading-out terminal of pressure side and machine bus (1) respectively passes sequentially through the breaker, transformer (5) and low-pressure side breaker (6) respectively
It is connected afterwards with two sections of low-pressure side bus (7), is also connected with to get in touch with there are two low-pressure side between two sections of low-pressure side bus (7) and break
Road device (8), two low-pressure side network interconnecting circuits (8) and the leading-out terminal for being connected to two sections of medium pressure sides and machine bus (1)
The low-pressure side breaker (6) be connected with programmable logic controller (PLC) PLC (9), two sections of low-pressure side bus (7)
By the low-pressure side breaker (6), feeder line extremely loads leading-out terminal afterwards.
2. a kind of 400V power supply-distribution system controllably powered automatically according to claim 1, which is characterized in that described can
Model S7-300 or S7-400 used by programmed logic controller PLC (9).
3. a kind of 400V power supply-distribution system controllably powered automatically according to claim 1, which is characterized in that the transformation
The coil ratio of device (5) is 25:1.
4. a kind of 400V power supply-distribution system controllably powered automatically according to claim 1, which is characterized in that the transformation
Device (5) is dry-type transformer.
5. a kind of 400V power supply-distribution system controllably powered automatically according to claim 1, which is characterized in that the diesel oil
Generator is made of diesel engine, generator, fuel tank, battery, the generator by cylinder, piston, cylinder head, inlet valve,
Exhaust valve and piston pin are constituted.
6. a kind of 400V power supply-distribution system controllably powered automatically according to claim 1, which is characterized in that medium pressure
Side and machine bus (1), which are arranged with the low-pressure side bus (7) by the copper bar or aluminium of flat rectangular body shape, to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348968.1U CN209642329U (en) | 2019-03-19 | 2019-03-19 | A kind of 400V power supply-distribution system controllably powered automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348968.1U CN209642329U (en) | 2019-03-19 | 2019-03-19 | A kind of 400V power supply-distribution system controllably powered automatically |
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| Publication Number | Publication Date |
|---|---|
| CN209642329U true CN209642329U (en) | 2019-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920348968.1U Active CN209642329U (en) | 2019-03-19 | 2019-03-19 | A kind of 400V power supply-distribution system controllably powered automatically |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663623A (en) * | 2020-05-18 | 2020-09-15 | 中国电建集团华东勘测设计研究院有限公司 | Water-flooding-proof drainage system for underground powerhouse of pumped storage power station |
-
2019
- 2019-03-19 CN CN201920348968.1U patent/CN209642329U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663623A (en) * | 2020-05-18 | 2020-09-15 | 中国电建集团华东勘测设计研究院有限公司 | Water-flooding-proof drainage system for underground powerhouse of pumped storage power station |
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