CN204793952U - Built on stilts trunk distribution network construction system of couple very much in love type middling pressure - Google Patents
Built on stilts trunk distribution network construction system of couple very much in love type middling pressure Download PDFInfo
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- CN204793952U CN204793952U CN201520580865.XU CN201520580865U CN204793952U CN 204793952 U CN204793952 U CN 204793952U CN 201520580865 U CN201520580865 U CN 201520580865U CN 204793952 U CN204793952 U CN 204793952U
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Abstract
The utility model discloses a built on stilts trunk distribution network construction system of couple very much in love type middling pressure, including two transformer substations, four circuit breakers, two section switch and two interconnection switchs, each transformer substation is equipped with two exports, and each exit of each transformer substation is equipped with a separable type wiring structure all through circuit breaker of generating line series connection between two circuit breakers. Section switch keeps normally closed state, and the interconnection switch keeps open state, and the circuit breaker keeps normally closed state. The utility model discloses it has following advantage to compare prior art: the utility model discloses a built on stilts trunk distribution network construction system of couple very much in love type middling pressure structure is relatively independent, and the power supply load is relatively stable. When the utility model discloses an user's load demand that built on stilts trunk distribution network construction system of couple very much in love type middling pressure inserted reaches the saturation water at ordinary times, but changes through part grafting type and cutting of separable type structure, carries out the grafting to other standard couple very much in love structures and separable type structure, passes through to the standard target rack.
Description
Technical field
The utility model relates to the empty trunk distribution network system of middle pressure rack, in particular pressure rack empty trunk distribution network construction system in a kind of couple very much in love type.
Background technology
According to " distribution network planning designing technique directive/guide " (Q/GDW738-2012), " urban distribution network planning design specification " (GB50613-2010) and " rural cadastration Guidance Rule " (DL/T5118), middle pressure rack empty trunk power distribution network typical structure has: single radiation wiring system, simply connected network wiring system and many segmentations appropriateness contact wiring.
Above three kinds of standard modes of connection, in traditional medium voltage distribution network is built, because of factors such as the geographical distribution of load point, trend of road and rising characteristics, easily cause actual rack and grid plan modification target generation deviation.Though through amendment and the correction of rolling year by year, finally cause the reality that network configuration is unintelligible, segmentation is unreasonable, invalid contact is many, directly affect turning of power distribution network and supply to be with inferior capabilities mutually, customer power supply reliability is difficult to ensure.
Owing to being subject to the otherness constraint of customer charge density, city road network and regional development, all kinds of " code " all cannot build sequential to rack and rack transient mode carries out clearly.In order to reach the power supply capacity index of zones of different, realize the growth requirement of distribution network construction appropriate advance customer charge.For many years, power supply enterprise is all the time tightly around " customer charge developing characteristics ", " how to improve grid structure, to realize reasonable transition to final rack and evolution ", in-depth analysis and primary study are carried out in this series of propositions such as " how realizing the coordination between power distribution network benefits ".
Along with on March 15th, 2015 " State Council of the Central Committee of the Communist Party of China is about some suggestions of further in-depth power system reform " (in send out [2015] No. 9), and National Development and Reform Committee on April 15 " send out [2015] No. 9 gists of a document about in implementing, accelerate to advance the notice of T-D tariff reform " (send out and change No. [2015] 742, price) in succession put into effect.Around economy and the rentability of power distribution network operation, we have to, around investment and income to study the developing direction of current power distribution rack, and seek appropriate balance in construction scale, power supply capacity, management input and profit return etc.
More particularly be positioned at Outskirts of City, new planning development park, and newly-built transformer station (switchyard) the outgoing line interval resource of planning Xincheng District, require that always can be applied to install client by some Large Copacity " takies " in order according to power supply enterprise's marketing management.But, because some user power utilization levels cannot reach certain scale in a short time, and apply to install capacity level with user and formed and mate, to such an extent as to provide power supply enterprise's main transformer of transformer substation of electric energy to be in light running level for it.Meanwhile, because transformer station's outgoing line interval " is taken " in order, other power consumers that the later stage applies to install but directly cannot obtain power supply from transformer station.Directly cause power supply enterprise's " unit power supply cost is high " and " having electricity can not send " two kinds of simultaneous difficult situations of situation.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide pressure rack empty trunk distribution network construction system in a kind of couple very much in love type, design specification, structure are simple, convenient to construct, and transformation flexibly.
The utility model is achieved through the following technical solutions: pressure rack empty trunk distribution network construction system in a kind of couple very much in love type, for connecting pressure rack empty trunk power distribution network wired network in transformer station's formation, it is characterized in that: comprise Liang Zuo transformer station, four circuit breakers, two block switches and two interconnection switches, each transformer station is provided with two outlets, all to be connected a circuit breaker by bus in each exit of each transformer station, a separated type wiring construction is provided with between two circuit breakers, described block switch keeps normally off, described interconnection switch keeps normally open, described circuit breaker keeps normally off.
As the further optimization of such scheme, described separated type wiring construction comprise a block switch and with an interconnection switch, described block switch is connected with described interconnection switch.
As the further optimization of such scheme, in described couple very much in love type, the construction system of the empty trunk power distribution network of pressure rack comprises the first transformer station and the second transformer station, first outlet of described first transformer station to be connected the first circuit breaker by bus A, and the second outlet of described first transformer station to be connected the second circuit breaker by bus B; First outlet of described second transformer station is by bus C series connection the 3rd circuit breaker, and the second outlet of described second transformer station is by bus D series connection the 4th circuit breaker.
As the further optimization of such scheme, be provided with a separated type wiring construction between described first circuit breaker and described 4th circuit breaker, between the second circuit breaker and the 3rd circuit breaker, be provided with a separated type wiring construction.
As the further optimization of such scheme, described first circuit breaker connects the incoming end of a block switch by one-level power-feed section A-1, block switch pick out end to connect interconnection switch incoming end by secondary power-feed section A-2, the end that picks out of interconnection switch is connected with the 4th circuit breaker electric by one-level power-feed section D-1.
As the further optimization of such scheme, described second circuit breaker connects the incoming end of an interconnection switch by one-level power-feed section B-1, interconnection switch pick out end to connect block switch incoming end by secondary power-feed section C-2, the end that picks out of block switch is connected with the 3rd circuit breaker electric by one-level power-feed section C-1.
Compared with the prior art, in a kind of couple very much in love type of the present utility model, the beneficial effect of pressure rack empty trunk distribution network construction system is embodied in:
1, pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model, comprises at least two separated type wiring constructions, separated type wiring construction comprise a block switch and with an interconnection switch, block switch is connected with interconnection switch.This structure is relatively independent, and supply load is relatively stable.When the customer charge demand that this structure accesses reaches capacity level, change by local " can grafting-type " and cutting of " separated type " structure, carry out " grafting " to other standards " couple very much in love " structure and " separable " structure, continue to carry out transition to standard target rack.
2, pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model, during conditions permit, can be used as newly-built rack initial stage basic routing line and directly builds, and the rack transitional period meets power distribution network and runs " N-1 " requirement and enough load transfer requirements.Along with user accesses the continuous increase of load, non-for part trunk structure can be transferred to " can grafting " structure, whole group to other structures " grafting ".
3, pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model, to the transformation of old rack, in a kind of couple very much in love type of the present utility model, pressure rack empty trunk distribution network construction system can be formed by the evolution of " separated type " structure, to realize the effective transition to final normal structure; And " can graft structure " entirety " grafting " to this structure can be born, enhance purpose and the validity of middle pressure trunk distribution network transform, Appropriate application existing resource, realizes the active balance of source substation subregion power supply capacity.
4, pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model, base oneself upon modular design specification, structure is simple, convenient to construct.In a kind of couple very much in love type of the present utility model pressure rack empty trunk distribution network construction system relative to standard grid structure specifically and quantize.Not only guide the orderly construction of middle pressure mains network, reasonable evolution, greatly improve the resource distribution at extrusion line interval in transformer station, switchyard simultaneously, and to the inspection of power distribution network fortune, scheduling, and the access-in management of newly-increased load has directive significance.
Accompanying drawing explanation
Fig. 1 is the structural representation of pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model.
In figure: circuit breaker 1, block switch 2, interconnection switch 3.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented under premised on technical solutions of the utility model; give detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
Pressure rack empty trunk distribution network construction system in a kind of couple very much in love type, for connecting pressure rack empty trunk power distribution network wired network in transformer station's formation, comprise Liang Zuo transformer station, four circuit breakers, 1, two block switches 2 and two interconnection switches 3, each transformer station is provided with two outlets, all to be connected a circuit breaker by bus in each exit of each transformer station, a separated type wiring construction is provided with between two circuit breakers, block switch keeps normally off, interconnection switch keeps normally open, and circuit breaker keeps normally off.Wherein, separated type wiring construction comprise a block switch 2 and with an interconnection switch 3, described block switch and described interconnection switch are by connecting.
Pressure rack empty trunk distribution network construction system in a kind of couple very much in love type that preferred embodiments of the present utility model provides is the structural representation of pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model see Fig. 1, Fig. 1.In a kind of couple very much in love type, pressure rack empty trunk distribution network construction system comprises the first transformer station and the second transformer station, and the first outlet of the first transformer station to be connected the first circuit breaker by bus A, and the second outlet of the first transformer station to be connected the second circuit breaker by bus B; First outlet of the second transformer station is by bus C series connection the 3rd circuit breaker, and the second outlet of the second transformer station is by bus D series connection the 4th circuit breaker.Wherein, first circuit breaker connects the incoming end of a block switch by one-level power-feed section A-1, block switch pick out end to connect interconnection switch incoming end by secondary power-feed section A-2, the end that picks out of interconnection switch is connected with the 4th circuit breaker electric by one-level power-feed section D-1.Second circuit breaker connects the incoming end of an interconnection switch by one-level power-feed section B-1, interconnection switch pick out end to connect block switch incoming end by secondary power-feed section C-2, the end that picks out of block switch is connected with the 3rd circuit breaker electric by one-level power-feed section C-1.
Preferred embodiments of the present utility model builds pressure rack empty trunk distribution network construction system in a kind of couple very much in love type by Liang Zuo transformer station, two block switches and two interconnection switches.In a kind of couple very much in love type of the present utility model, pressure rack empty trunk distribution network construction system comprises four complete one-level power-feed sections and two complete interconnection type secondary power-feed sections, four one-level power-feed sections: A-1, B-1, C-1 and D-1, interconnection type secondary power-feed section: A-2 and C-2.
To the transformation of old rack, in a kind of couple very much in love type of the present utility model, pressure rack empty trunk distribution network construction system is generally formed by the evolution of " separated type " structure.To realize the effective transition to final normal structure; And " can graft structure " entirety " grafting " to this structure can be born, enhance purpose and the validity of middle pressure trunk distribution network transform, Appropriate application existing resource, realizes the active balance of source substation subregion power supply capacity.
In a kind of couple very much in love type of the present utility model, pressure rack empty trunk distribution network construction system also can be formed by two " separated types " interior simply connected network diagram frame evolution of stand.Wherein, two outlets of the first transformer station form simply connected network diagram frame in first station by bus A, the first circuit breaker, one-level power-feed section A-1, block switch, secondary power-feed section A-2, interconnection switch, one-level power-feed section B-1, the second circuit breaker and bus B.Two outlets of the second transformer station form simply connected network diagram frame in second station by bus C, the 3rd circuit breaker, one-level power-feed section C-1, block switch, secondary power-feed section C-2, interconnection switch, one-level power-feed section D-1, the 4th circuit breaker and bus D.Pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of preferred embodiments of the present utility model, the structure see accompanying drawing 1 can be formed by simply connected network diagram frame evolution in above-mentioned two stations.
Pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model, to newly-built rack, the initial stage basic routing line of can be used as directly is built, and the rack transitional period meets power distribution network and runs " N-1 " requirement and enough load transfer requirements.Along with user accesses the continuous increase of load, reach boundary condition, non-for part trunk structure can be transferred to " can grafting " structure, whole group to other structures " grafting ".In a kind of couple very much in love type of the present utility model, pressure rack empty trunk distribution network construction system is applicable to whole group of unit and builds mid-term, effectively can meet the requirement of whole group of unit to load transfer between station.
In a kind of couple very much in love type of the present utility model, pressure rack empty trunk distribution network construction system is changed meeting under boundary condition.Boundary condition: in a kind of couple very much in love type of the present utility model, the load capacity of pressure rack empty trunk distribution network construction system is by final level 24 megawatt global restriction.Reference operation level is 6 megawatts by single line load capacity, specifically see table 1.
Table 1: middle pressure trunk power distribution network is commonly used cable and allowed long-term work load condition list
Pressure rack empty trunk distribution network construction system in a kind of couple very much in love type of the present utility model, based on modular design specification, structure is simple, convenient to construct.This structure comparatively standard network shelf structure specifically and quantize.Not only guide the orderly construction of middle pressure mains network, reasonable evolution, greatly improve the resource distribution at extrusion line interval in transformer station, switchyard simultaneously, and to the inspection of power distribution network fortune, scheduling, and the access-in management of newly-increased load has directive significance.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (5)
1. pressure rack empty trunk distribution network construction system in a couple very much in love type, for connecting pressure rack empty trunk power distribution network wired network in transformer station's formation, it is characterized in that: comprise Liang Zuo transformer station, four circuit breakers, two block switches and two interconnection switches, each transformer station is provided with two outlets, all to be connected a circuit breaker by bus in each exit of each transformer station, a separated type wiring construction is provided with between two circuit breakers, described separated type wiring construction comprise a block switch and with an interconnection switch, described block switch is connected with described interconnection switch, described block switch keeps normally off, described interconnection switch keeps normally open, described circuit breaker keeps normally off.
2. pressure rack empty trunk distribution network construction system in a kind of couple very much in love type according to claim 1, it is characterized in that: in described couple very much in love type, the construction system of the empty trunk power distribution network of pressure rack comprises the first transformer station and the second transformer station, first outlet of described first transformer station to be connected the first circuit breaker by bus A, and the second outlet of described first transformer station to be connected the second circuit breaker by bus B; First outlet of described second transformer station is by bus C series connection the 3rd circuit breaker, and the second outlet of described second transformer station is by bus D series connection the 4th circuit breaker.
3. pressure rack empty trunk distribution network construction system in a kind of couple very much in love type according to claim 2, it is characterized in that: be provided with a separated type wiring construction between described first circuit breaker and described 4th circuit breaker, between the second circuit breaker and the 3rd circuit breaker, be provided with a separated type wiring construction.
4. pressure rack empty trunk distribution network construction system in a kind of couple very much in love type according to claim 2, it is characterized in that: described first circuit breaker connects the incoming end of a block switch by one-level power-feed section A-1, block switch pick out end to connect interconnection switch incoming end by secondary power-feed section A-2, the end that picks out of interconnection switch is connected with the 4th circuit breaker electric by one-level power-feed section D-1.
5. pressure rack empty trunk distribution network construction system in a kind of couple very much in love type according to claim 2, it is characterized in that: described second circuit breaker connects the incoming end of an interconnection switch by one-level power-feed section B-1, interconnection switch pick out end to connect block switch incoming end by secondary power-feed section C-2, the end that picks out of block switch is connected with the 3rd circuit breaker electric by one-level power-feed section C-1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583023A (en) * | 2020-12-22 | 2021-03-30 | 广东电网有限责任公司 | Power grid line structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583023A (en) * | 2020-12-22 | 2021-03-30 | 广东电网有限责任公司 | Power grid line structure |
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