CN207166005U - A kind of transforming plant main transformer low-pressure side place - Google Patents

Abstract

The utility model discloses a kind of transforming plant main transformer low-pressure side place, it is characterised in that：Including GIB buses（1）And some reactive-load compensation intervals；GIB buses（1）Concave-convex bending structure is arranged in the horizontal direction so as to form some sections towards both-side opening and the interval bus that is staggered；The GIB buses（1）Set in vertical direction ground proximity low level, its terrain clearance is 20~40cm；The reactive-load compensation is disposed on the GIB buses（1）Both sides, and respectively with it is corresponding it is described interval bus electrical connection.The utility model has the advantage that：Being capable of flexible arrangement equipment, saving area occupied and space.

Description

A kind of transforming plant main transformer low-pressure side place

Technical field

The invention belongs to power system project of transmitting and converting electricity design field, and in particular to a kind of transforming plant main transformer low-pressure side Place.

Background technology

As illustrated in fig. 1 and 2, main transformer low-pressure side bus mainly uses outdoor support type busbar in domestic outdoor substation at present Line, main transformer, reactive power compensator and pipe bus both sides are drawn by bare conductor to be connect, to meet powered required distance, it is necessary to two Ensure a certain distance between the lead of side and between lead pitch pipe mother's support insulator, Switch equipment such as HGIS, AIS are set It is standby to be typically placed on outside the drop shadow spread of bus, so limit between main transformer, main bus-bar and each spacing devices Relative positioning flexibility, so as to limit the integral layout in main transformer low-pressure side place optimization, floor space is larger to be caused to invest Waste.

Gas-insulated enclosed busbar（GIB buses）Size itself is smaller, and is limited with other electrical equipments without band electrical distance, Flexible arrangement, facilitate the preferred arrangement in place, in addition, GIB buses because exposed insulation is few, reduce the probabilities such as mist dodges, rain dodges, So as to reduce main transformer probability out of service, the security of system operation is substantially increased.Therefore GIB buses are applied to There is larger prospect, the optimization and the focus of research and Recent study for its arrangement are asked in substation project Topic.

At present, the idle Ground arrangement scheme based on GIB buses routinely has two schemes：A kind of is list as shown in Figure 3 Column layout pattern, the program is similar to traditional outdoor support tube bus scheme, GIB buses in-line arrangement, reactive-load compensation Device is arranged in GIB buses side, because using GIB buses and built in be disconnecting switch, interval longitudinal size compared with stay pipe bus Scheme reduces 5m.

Another kind is double-row type layout pattern as shown in Figure 4, and arrangement GIB buses are arranged on reactive power compensator Centre, GIB buses in-line arrangement, each interval outlet casing tube, more traditional support type busbar line scheme are drawn from centre to bilateral Lateral dimension optimizes 5m.

In summary, although reducing place and lateral dimension, nothing to a certain extent using GIB buses in traditional scheme The utilization rate in work(compensation place is still relatively low.At the same time, land resource is more nervous at present, in power system process of construction In, it is necessary to effectively optimize equipments layout scheme, save and take up an area, while also need to take into account the flexibility of equipment arrangement.

The content of the invention

It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of transforming plant main transformer low-pressure side place, energy Enough flexible arrangement equipment, saves area occupied and space.

For solve prior art problem, the invention discloses a kind of transforming plant main transformer low-pressure side place, including GIB buses with And some reactive-load compensation intervals；GIB buses are arranged to concave-convex bending structure so as to form some sections of directions two in the horizontal direction Side opening and the interval bus being staggered；GIB buses vertical direction ground proximity low level set, its terrain clearance be 20~ 40cm；Reactive-load compensation is disposed on the both sides of GIB buses, and is electrically connected respectively with corresponding interval bus.

Further, outlet casing tube each is provided with the bus of interval, wherein an outlet casing tube positioned at end is electrically connected Main transformer inlet wire is connect, remaining outlet casing tube electrically connects corresponding reactive-load compensation interval.

Further, GIB buses built-in bus bar equipment, bus arrester and some outlet disconnecting switch；Outlet is isolated Switch is electrically connected between corresponding interval bus and outlet casing tube.

Further, reactive-load compensation interval includes capacitor standoff and/or reactor interval.

Further, capacitor standoff includes breaker, current transformer and capacitor installation.

Further, reactor interval includes breaker, current transformer, arrester and reactor.

Further, breaker pattern is HGIS, potting breaker or AIS.

Further, for capacitor standoff using outdoor frame type capacitive device composition covering device, reactor interval uses product word Shape is arranged.

Further, three-phase conductor is integrated in GIB buses.

Further, the terrain clearance of GIB buses is 20cm.

The device have the advantages that：Can flexible arrangement equipment, more outdoor brace type pipe busbar arrangement scheme is horizontal Size reduction more than 60%, greatlys save area occupied and space.

Brief description of the drawings

Fig. 1 is a kind of structure top view in transforming plant main transformer low-pressure side place in the prior art；

Fig. 2 is the structure section figure in transforming plant main transformer low-pressure side place shown in Fig. 1；

Fig. 3 is a kind of structure top view of single-column type layout pattern in the prior art；

Fig. 4 is a kind of structure top view of double-row type layout pattern in the prior art；

Fig. 5 is the structure top view of a preferred embodiment of the invention；

Fig. 6 is the structure section figure of embodiment illustrated in fig. 5；

Fig. 7 is the wiring schematic diagram of embodiment illustrated in fig. 5；

Fig. 8 is equipment safety in embodiment illustrated in fig. 5 apart from check plot；

Fig. 9 is equipment fortune inspection passage check plot in embodiment illustrated in fig. 5.

Reference：

1GIB buses；2 outlet casing tubes；3 bus equipments；4 bus arresters；5 outlet disconnecting switch；6 breakers；7 electric currents Transformer；8 reactor intervals；9 capacitor standoffs；10 capacitor set equipments；11 reactors；12 arresters；13 segregator barriers.

Embodiment

The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention Technical scheme, and can not be limited the scope of the invention with this.

As shown in Fig. 5 to 9, a kind of transforming plant main transformer low-pressure side place, including GIB buses 1 and reactive-load compensation interval； GIB buses 1 and reactive-load compensation interval are arranged in accordance with the following methods.

GIB buses 1 are arranged to concave-convex bending structure in the horizontal direction so as to forming some sections towards both-side opening and The interval bus being staggered；GIB buses 1 are set in vertical direction ground proximity low level, its terrain clearance is 20~40cm； Some reactive-load compensations are disposed on to the both sides of GIB buses 1, and electrically connected respectively with corresponding interval bus.

In the horizontal direction, the determination method for being spaced the lateral dimension of bus is：Identical in reactive-load compensation interval is set Lateral dimension of the ultimate range as interval bus between the standby bus with interval；It is spaced the determination method of the longitudinal size of bus For：In the case of lateral dimension is for known to, the longitudinal size for being spaced bus is not less than while meets all devices normal operation Or minimum longitudinal size when safe distance requirement during maintenance and minimal distance requirement during equipment conveying.

Preferably, outlet casing tube 2 each is provided with the bus of interval, wherein an outlet casing tube positioned at end 2 electrical connection main transformer inlet wires, remaining outlet casing tube 2 electrically connect corresponding reactive-load compensation interval.

Preferably, the built-in bus bar equipment 3 of GIB buses 1, bus arrester 4 and some outlet disconnecting switch 5； Outlet disconnecting switch 5 is electrically connected between corresponding interval bus and outlet casing tube 2.

Preferably, reactive-load compensation interval includes capacitor standoff 9 and/or reactor interval 8.

Preferably, capacitor standoff 9 includes breaker 6, current transformer 7 and capacitor installation.

Preferably, reactor interval 8 includes breaker 6, current transformer 7, arrester 12 and reactor 11.

Preferably, the pattern of breaker 6 is HGIS, potting breaker or AIS.

Preferably, capacitor standoff 9 using outdoor frame type capacitive device composition covering device, adopt by reactor interval 8 Arranged with isosceles triangle.

Preferably, three-phase conductor is integrated in GIB buses 1, and is arranged in bus sleeve.In this way may be used With by traditional three-phase conductor and relevant device（Such as outlet disconnecting switch 5）Become one, can equally reduce horizontal chi It is very little.

Preferably, the bus sleeve lower surface of GIB buses 1 is 20cm away from ground level.Compared to prior art For middle 7m height, having significantly reduces, and greatly improves the anti-seismic performance of equipment.

In the present invention, identical equipment refers to：Capacitor set equipment 10 and reactor 11 respectively with corresponding outlet casing tube 2 Between belong to same kind of equipment in the equipment that connects.Such as：Breaker is connected with turn between capacitor and corresponding outlet casing tube 2 6th, current transformer 7, breaker 6, current transformer 7, arrester 12 are connected with turn between reactor 11 and corresponding outlet casing tube 2 When, identical equipment is breaker 6, current transformer 7, and this time is the two equipment and outlet every the lateral dimension of bus Sleeve pipe 2 or the maximum for being spaced bus distance, i.e. 5000mm in Fig. 5 and 6.

Safe distance requirement when equipment normal operation or maintenance refers to：Equipment normal operation needs to meet capacitor standoff Middle outdoor string is anti-and reactor interval in the verification of dry reactor 1.1D safe distances require that D is string is anti-or reactor diameter； When meeting parallel different between GIB outlet casing tubes under interruption maintenance operating mode safety net distance D values verification, D values are according to different voltages Grade value is different, referring in particular to professional standard DL/T 5352《High voltage distribution installation designing technique code》, i.e., each equipment room It verifies circle non-overlapping and cable and encloses non-intersect be defined with verification.

Minimal distance requirement during equipment conveying refers to：Take into account the requirement of each equipment normal operation luck inspection passage, such as Fig. 8 Shown in 9, capacitor standoff equipment fortune inspection passage is S1, and reactor spacing devices fortune inspection passage is S2.Stopped with capacitor standoff 9 Exemplified by electric-examination is repaiied, 8 normal charging operation of reactor interval, using the enclosing of segregator barriers 13, reactor interval 8 is using outside meeting It is wide on the premise of without band point part B1 values band electrical distance verification is blocked, the equipment of capacitor standoff 9 fortune is examined between passage S1 most Distance W greatly meets that the minimum transportation radius of the equipment such as breaker, current transformer can meet to require.If segregator barriers 13 are in school Test in the range of circle, then by verification circle edge on the basis of calculate W values, it is on the contrary then on the basis of segregator barriers 13 calculating W values.

The minimum value for being spaced the longitudinal size of bus is longitudinal size when meeting above-mentioned two requirement simultaneously, in reality Certain surplus can be reserved during construction, is arranged using the size slightly larger than minimum value as longitudinal size.

In the present invention, low-pressure side uses 66kV equipment, and band electrical distance verification D values take 2600mm, and B1 values take 1400mm, laterally Span L takes 5000mm, and connection is between the outlet sleeve 2 of 2 both sides adjacent thereto of outlet casing tube of middle capacitor standoff 9 Every respectively H1 and H2；Determine that principle draws this engineering interval longitudinal pitch H1=6500mm, H2=7000mm according to above-mentioned size, Equipment conveying size verifies W=2380mm, meets equipment fortune inspection passage demand during interruption maintenance.

As illustrated in fig. 1 and 2, outdoor support type busbar line arrangement of the prior art, electric current is mutual in capacitor standoff Spacing is 16m between current transformer in sensor and reactor interval.As shown in Fig. 5 to 9, the arrangement in the present invention, electricity Spacing is 5m between current transformer in current transformer and reactor interval in vessels apart, reduces 11m（About 68%）, entirely Site area reduction about 21%, utilization of area rate, Economization on land investment are substantially increased in engineer applied.

Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation Also it should be regarded as protection scope of the present invention.

Claims (10)

1. A kind of 1. transforming plant main transformer low-pressure side place, it is characterised in that：Including GIB buses（1）And some reactive-load compensation intervals； GIB buses（1）Concave-convex bending structure is arranged in the horizontal direction so as to form some sections towards both-side opening and be staggered Interval bus；The GIB buses（1）Set in vertical direction ground proximity low level, its terrain clearance is 20~40cm；It is described Reactive-load compensation is disposed on the GIB buses（1）Both sides, and respectively with it is corresponding it is described interval bus electrical connection.
2. A kind of 2. transforming plant main transformer low-pressure side place according to claim 1, it is characterised in that：Each interval bus On be provided with outlet casing tube（2）, wherein an outlet casing tube positioned at end（2）Main transformer inlet wire is electrically connected, described in remaining Outlet casing tube（2）The corresponding reactive-load compensation interval of electrical connection.
3. A kind of 3. transforming plant main transformer low-pressure side place according to claim 2, it is characterised in that：The GIB buses（1）It is interior Put bus equipment（3）, bus arrester（4）And some outlet disconnecting switch（5）；The outlet disconnecting switch（5）Electrical connection In the corresponding interval bus and the outlet casing tube（2）Between.
4. A kind of 4. transforming plant main transformer low-pressure side place according to claim 1, it is characterised in that：The reactive-load compensation interval Including capacitor standoff（9）And/or reactor interval（8）.
5. A kind of 5. transforming plant main transformer low-pressure side place according to claim 4, it is characterised in that：The capacitor standoff （9）Including breaker（6）, current transformer（7）And capacitor installation（10）.
6. A kind of 6. transforming plant main transformer low-pressure side place according to claim 4, it is characterised in that：The reactor interval （8）Including breaker（6）, current transformer（7）, arrester（12）And reactor（11）.
7. A kind of 7. transforming plant main transformer low-pressure side place according to claim 5 or 6, it is characterised in that：The breaker（6） Pattern is HGIS, potting breaker or AIS.
8. A kind of 8. transforming plant main transformer low-pressure side place according to claim 4, it is characterised in that：The capacitor standoff （9）Covering device, the reactor interval are formed using outdoor frame type capacitive device（8）Arranged using isosceles triangle.
9. A kind of 9. transforming plant main transformer low-pressure side place according to claim 1, it is characterised in that：The GIB buses（1）It is interior Integrated three-phase conductor.
10. A kind of 10. transforming plant main transformer low-pressure side place according to claim 1, it is characterised in that：The GIB buses（1） Terrain clearance be 20cm.