CN203942280U - Distribution Network Frame wiring construction - Google Patents
Distribution Network Frame wiring construction Download PDFInfo
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- CN203942280U CN203942280U CN201420147488.6U CN201420147488U CN203942280U CN 203942280 U CN203942280 U CN 203942280U CN 201420147488 U CN201420147488 U CN 201420147488U CN 203942280 U CN203942280 U CN 203942280U
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- 230000018109 developmental process Effects 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 4
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Abstract
A kind of Distribution Network Frame wiring construction, in this Distribution Network Frame wiring construction, comprise some Single-ring network grid structures, between two groups of Single-ring network grid structures, interconnection is set, this Distribution Network Frame wiring construction is that Single-ring network three power supplys two main are for Connection Mode, Single-ring network grid structure comprises two power stations, and be connected on two ring main unit and some box type transformers between power station, in this Single-ring network grid structure, also comprise an interconnection switch, this interconnection switch is arranged on box type transformer, is normal open switch.The utility model power supply reliability is high, and switchyard centrally connected power supply pattern, is convenient to operation management.
Description
Technical field
The utility model relates to a kind of Distribution Network Frame wiring construction.
Background technology
Shanghai City is the first city of China, and one of four municipality directly under the central government are China's economy, finance, trade and shipping centre.2012, Shanghai City GCP reached 2.01 trillion RMB, 11 of whole world ranks.GCP and per capita disposable income all occupy national each provinces and regions and municipality directly under the Central Government first place per capita.Shanghai is in the development key period of " industrial transformation " at present, puts forth effort to make that " four " center "-international economy centers, international financial center, International Trade Center, International shipping center, this just has higher requirement to whole city's power supply capacity level.
1210.41 square kilometres of Pudong New Area, Shanghai whole district areas, determine to have gone through development in more than 20 years since " Pudong's great development " key areas such as built Golden Bridge, the national development zone of Zhangjiang, Waigaoqiao Bonded Zone, Lujiazui Financial and Trade Zone for the Party Central Committee, State Council from nineteen ninety.On July 3rd, 2013, " China (Shanghai) free trade trial zone " is granted, settles coastal 28 square kilometres of Pudong New District, indicates the ground zero of Shanghai Metallurgical Industry.As whole city's maximum, most active district, Pudong New District is comprising that all many-sides such as economic development, industrial transformation lead the whole city.
The construction scope of Pudong's core space power distribution network is the riverine core space of Pudong's Huangpu River, and to Huangpu River, north, to Huangpu River, to the east of Pudong South Road, reaches credit Hua Lu in the south, takes up an area approximately 10 square kilometres.Naturally extending of the rapid growth of this core area power load and distribution line, has unavoidably caused the problems such as blur boundary, crossing elimination, roundabout power supply, affects power supply reliability and line loss lean.
Represent the international Advanced Cities such as the Singapore, Tokyo, Hong Kong, Paris of world-class level although the historical power supply reliability of Pudong's core space, at home in higher level, is compared, gap is larger.2013, State Grid Corporation of China promulgated " distribution network planning designing technique directive/guide ", proposed large size city nucleus to be defined as A+ region, integrated with world-class level, realized power supply reliability higher than 99.999% developing goal.Therefore, no matter be the power supply service level in international metropolis's core city, or the developing goal of State Grid Corporation of China's technology directive/guide proposition, all Pudong's core space is proposed to higher power supply reliability requirement.
Aspect 10kV medium voltage distribution network grid structure, core space is compared Guo Wang company, Shanghai company Guidelines, belongs to lack of standardization, atypical phenomenon and mainly contains three kinds:
1, overhead wire segmentation capacity is bigger than normal, gets in touch with on the low side;
2, do not meet current techniques principle according to the III type power distribution station of old standard construction;
3, there is atypia wiring in overhead wire.
And by the international advanced metropolis of contrast distribution net work structure, as Tokyo, Singapore, Hong Kong, Paris etc., the deficiency that sums up the current rack existence of core space comprises:
1, to share rate higher at part transformer station interval;
2, on switchyard, level power supply, all from the different buses of same transformer station, belongs to secondary duplicate supply;
3, on most of looped network, level power supply, from the different buses of same transformer station (switchyard), belongs to secondary duplicate supply;
4, switchyard total number is on the low side, 10kV interval anxiety;
5, exist large looped network to overlap little ring network structure, power distribution automation is disposed and brought technical difficulty;
6, rack is laterally got in touch with weakness, and rack load transfer ability is limited.
For solving above-mentioned power distribution network rack aspect existing problems, core space need be strengthened distribution grid structure, optimizes the mode of connection, reduce circuit Rate of average load, strengthen load transfer ability, study and define normalized distribution Connection Mode, and according to unified standard, high-quality construction.
Utility model content
The utility model provides a kind of Distribution Network Frame wiring construction, and power supply reliability is high, and switchyard centrally connected power supply pattern, is convenient to operation management.
In order to achieve the above object, the utility model provides a kind of Distribution Network Frame wiring construction, in this Distribution Network Frame wiring construction, comprise some Single-ring network grid structures, between two groups of Single-ring network grid structures, interconnection is set, this Distribution Network Frame wiring construction is that Single-ring network three power supplys two main are for Connection Mode.
Described Single-ring network grid structure comprises two power stations, and be connected on two ring main unit and some box type transformers between power station, in this Single-ring network grid structure, also comprise an interconnection switch, this interconnection switch is arranged on box type transformer, is normal open switch.
On each box type transformer and ring main unit, distribution power automation terminal is set; control the switch motion in box type transformer and ring main unit; a feeder line automatic protecting control device is set on each power station; it connects described distribution power automation terminal, controls the action of whole Single-ring network grid structure.
Described interconnection connects respectively two groups of ring main units in Single-ring network grid structure, and the two ends of interconnection are on-load switch, and the on-load switch of one end is normally open, and the on-load switch of the other end is normally off.
Described power station is from different switchyards, described switchyard comprises the first paragraph bus and the second segment bus that connect by block switch, on every section of bus, connect respectively one back into line and some lines that returns back out, the inlet wire of switchyard is connected respectively different transformer stations with inlet wire.
In the outlet of described switchyard, circuit breaker is set.
The utility model, by between two groups of relatively independent Single-ring networks, interconnection being set, forms the standby Connection Mode of Single-ring network three power supplys two master one.Set up special line at Single-ring network important load node, with contiguous Single-ring network contact, normal condition is cut-off operation, and the wire diameter of interconnection is identical with backbone.Any one section fault, pulls open respective section switch, closed interconnection switch, and load transfer is arrived to adjacent feeders, complete and turn confession, be applicable to the region that reliability requirement is higher, Small And Medium Capacity, single supply user concentrated area, and be transformed into the region that dual-ring network difficulty is large.
Brief description of the drawings
Fig. 1 is circuit structure block diagram of the present utility model.
Fig. 2～Fig. 5 is that the feeder line of the utility model under the first failure condition protected schematic diagram automatically.
Fig. 6～Fig. 9 is that the feeder line of the utility model under the second failure condition protected schematic diagram automatically.
Figure 10～Figure 13 is that the feeder line of the utility model under the third failure condition protected schematic diagram automatically.
Figure 14～Figure 17 is that the feeder line of the utility model under the 4th kind of failure condition protected schematic diagram automatically.
Figure 18～Figure 21 is that the feeder line under the first failure condition of the utility model under inspecting state is protected schematic diagram automatically.
Figure 22～Figure 25 is that the feeder line under the second failure condition of the utility model under inspecting state is protected schematic diagram automatically.
Figure 26～Figure 29 is that the feeder line under the utility model the third failure condition under inspecting state is protected schematic diagram automatically.
Embodiment
Following according to Fig. 1～Figure 29, illustrate preferred embodiment of the present utility model.
The utility model provides a kind of Distribution Network Frame wiring construction, in this Distribution Network Frame wiring construction, comprise some Single-ring network grid structures, between two groups of Single-ring network grid structures, interconnection is set, this Distribution Network Frame wiring construction is that Single-ring network three power supplys two main are for Connection Mode.
Described Single-ring network grid structure comprises two power stations, and be connected on two ring main unit and some box type transformers between power station, in this Single-ring network grid structure, also comprise an interconnection switch, this interconnection switch is arranged on box type transformer, for normal open switch, on each box type transformer and ring main unit, distribution power automation terminal is set, control the switch motion in box type transformer and ring main unit, a feeder line automatic protecting control device is set on each power station, it connects described distribution power automation terminal, control the action of whole Single-ring network grid structure.
Described interconnection connects respectively two groups of ring main units in Single-ring network grid structure, and the two ends of interconnection are on-load switch, and the on-load switch of one end is normally open, and the on-load switch of the other end is normally off.
As shown in Figure 1, it is the specific embodiment circuit structure diagram of Distribution Network Frame wiring construction of the present utility model, this Distribution Network Frame wiring construction is that Single-ring network three power supplys two main are for Connection Mode, power station is from switchyard, described switchyard comprises the first paragraph bus 12 and the second segment bus 13 that connect by block switch 11, on every section of bus, connect respectively one back into line and some lines that returns back out, the inlet wire 1 of switchyard is connected respectively different transformer stations with inlet wire 2.
Described Distribution Network Frame wiring construction comprises two groups of Single-ring network grid structures, two power stations of first group of Single-ring network grid structure are respectively the outlet 2 on the second segment bus of switchyard 1, with the outlet 1 on the first paragraph bus of switchyard 2, in this first group of Single-ring network grid structure, connect three box type transformers 102 and a ring main unit 103, arrange on one of them box type transformer and often open interconnection switch QS8; Two power stations of second group of Single-ring network grid structure are respectively the outlet 1 on the first paragraph bus of switchyard 1, with the outlet 2 on the second segment bus of switchyard 2, in this first group of Single-ring network grid structure, connect four box type transformers 102 and a ring main unit 103, arrange on one of them box type transformer and often open interconnection switch QS23; Between two groups of Single-ring network grid structures, interconnection 101 is set, connects respectively two groups of ring main units in Single-ring network grid structure, the on-load switch QS19 of these interconnection 101 one end is normally open, and the on-load switch QS7 of the other end is normally off.In the outlet 1 of switchyard 1, circuit breaker Q F1 is set; circuit breaker Q F2 is set in outlet 2; in the outlet 1 of switchyard 2, circuit breaker Q F3 is set; circuit breaker Q F4 is set in outlet 2; a feeder line automatic protecting control device is set in each outlet of switchyard; each box type transformer with the distribution power automation terminal that is connected described feeder line automatic protecting control device is set on ring main unit, it controls the switch motion in box type transformer and ring main unit.
While breaking down in Distribution Network Frame wiring construction; the utility model can be realized Fault Isolation and restore electricity, and the Single-ring network interconnection three power supply architecture feeder line automatic protecting methods that the Distribution Network Frame wiring construction providing based on the utility model is realized can be achieved as follows seven kinds of feed protections in situation:
1, circuit single failure situation one under normal operating condition
Under normal operating condition, in the time that fault occurs between QF2 and QS1 (as shown in Figure 2), the outlet breaker QF2 protection of switchyard 1 starts, move in the fault of place outlet, and QF2 instantaneous tripping (as shown in Figure 3), power supply area 1 dead electricity of switchyard; Now Distributed power automatization terminal exchange operation information, failure judgement section is QF2 and QS1 section circuit on the spot, and disconnects QS1 switch (as shown in Figure 4), completes the isolation of faulty line.
When after Fault Isolation success, power supply area 1 or dead electricity, now start to restore electricity, closed interconnection switch QS8, and region 1 starts to be restored electricity (as shown in Figure 5) by switchyard 2.Under new operational mode, the region 1 originally being powered by switchyard 1 changes by switchyard 2 and powers.
2, circuit single failure situation two under normal operating condition
Under normal operating condition, in the time that fault occurs between QS2 and QS4 (as shown in Figure 6), the outlet breaker QF2 protection of switchyard 1 starts, move in the fault of place outlet, and QF2 instantaneous tripping (as shown in Figure 7), power supply area 1 dead electricity of switchyard; Now Distributed power automatization terminal exchange operation information, failure judgement section is QS2 and QS4 section circuit on the spot, and cut-off switch QS2 and QS4(are as shown in Figure 8), complete the isolation of faulty line.
When after Fault Isolation success, the non-fault zone of power failure starts to restore electricity, and the outlet breaker QF2 of switchyard 1 overlaps, and realizes the power supply of the non-fault zone of faulty line upstream; Interconnection switch QS8 closure in distributed autonomous area, has realized the service restoration (as shown in Figure 9) of the non-fault zone in faulty line downstream.
Under new operational mode, the QS4 bus institute on-load of originally being powered by switchyard 1 changes by switchyard 2 powers.
3, circuit single failure situation three under normal operating condition
Under normal operating condition, in the time that fault occurs between QS9 and QS11 (as shown in figure 10), the outlet breaker QF3 protection of switchyard 2 starts, and moves in the fault of place outlet, QF3 instantaneous tripping (as shown in figure 11), power supply area 2 dead electricity of switchyard; Now Distributed power automatization terminal exchange operation information, failure judgement section is QS9 and QS11 section circuit on the spot, and cut-off switch QS9 and QS11(are as shown in figure 12), complete the isolation of faulty line.
When after Fault Isolation success, the non-fault zone of power failure starts to restore electricity, and the outlet breaker QF3 of switchyard 2 overlaps, and realizes the power supply of the non-fault zone of faulty line upstream; Interconnection switch QS8 closure in distributed autonomous area, has realized the service restoration (as shown in figure 13) of the non-fault zone in faulty line downstream.
Under new operational mode, the QS9 bus institute on-load of originally being powered by switchyard 2 changes by switchyard 1 powers.
4, circuit single failure situation four under normal operating condition
Under normal operating condition, in the time that fault occurs between QF3 and QS12 (as shown in figure 14), the outlet breaker QF3 protection of switchyard 2 starts, and moves in the fault of place outlet, QF3 instantaneous tripping (as shown in figure 15), power supply area 2 dead electricity of switchyard; Now Distributed power automatization terminal exchange operation information, failure judgement section is QF3 and QS12 section circuit on the spot, and cut-off switch QS12(is as shown in figure 16), complete the isolation of faulty line.
When after Fault Isolation success, the non-fault zone of power failure starts to restore electricity, and the interconnection switch QS8 closure in distributed autonomous area realizes the service restoration (as shown in figure 17) of the non-fault zone in faulty line downstream.Under new operational mode, the QS12 bus institute on-load of originally being powered by switchyard 2 changes by switchyard 1 powers.
(2) distributed autonomous area internal fault recovery scheme
1, failure condition one under switchyard one tunnel outlet inspecting state
Taking distributed autonomous area 1 as example, as shown in figure 18, switchyard 1 goes out line segment QF2-QS1 in line maintenance state to its initial launch mode, interconnection switch QS8 closure, and the region 1 that reason switchyard 1 is powered is now powered by switchyard 2.
Under inspecting state, in the time that fault occurs between QS2 and QS4 (as shown in figure 18), the outlet breaker QF3 protection of switchyard 2 starts, and moves in the fault of place outlet, QF3 instantaneous tripping (as shown in figure 19), the equal dead electricity of the power supply area 2 of switchyard and region 1; Now Distributed power automatization terminal exchange operation information, failure judgement section is QS2 and QS4 section circuit on the spot, and cut-off switch QS2, QS4(are as shown in figure 20), complete the isolation of faulty line.
When after Fault Isolation success, the non-fault zone of power failure starts to restore electricity.The outlet breaker QF3 of switchyard 2 overlaps, and realizes the non-fault zone service restoration (as shown in figure 21) of faulty line upstream.Now QS3 institute on-load cannot be realized service restoration.
2, failure condition two under switchyard one tunnel outlet inspecting state
Under inspecting state, in the time that fault occurs between QS5 and QS8 (as shown in figure 22), the outlet breaker QF3 protection of switchyard 2 starts, and moves in the fault of place outlet, QF3 instantaneous tripping (as shown in figure 23), the equal dead electricity of the power supply area 2 of switchyard and region 1; Now Distributed power automatization terminal exchange operation information, failure judgement section is QS5 and QS8 section circuit on the spot, and cut-off switch QS5, QS8(are as shown in figure 24), complete the isolation of faulty line.
When after Fault Isolation success, the non-fault zone of power failure starts to restore electricity.The outlet breaker QF3 of switchyard 2 overlaps, and realizes the non-fault zone service restoration of faulty line upstream; Load plug-in strip QS19 closure, makes power supply area 1 recover to be powered (as shown in figure 25) by switchyard 1.
3, failure condition three under switchyard one tunnel outlet inspecting state
Under inspecting state, in the time that fault occurs between QF3 and QS12 (as shown in figure 26), the outlet breaker QF3 protection of switchyard 2 starts, and moves in the fault of place outlet, QF3 instantaneous tripping (as shown in figure 27), the equal dead electricity of the power supply area 2 of switchyard and region 1; Now Distributed power automatization terminal exchange operation information, failure judgement section is QF3 and QS12 section circuit on the spot, and cut-off switch QS12(is as shown in figure 28), complete the isolation of faulty line.
When after Fault Isolation success, the non-fault zone of power failure starts to restore electricity.Load plug-in strip QS19 closure, makes power supply area 1 and power supply area 2 service restorations, powers (as shown in figure 29) by switchyard 1.
The power distribution network of Single-ring network interconnection three power supply architectures; while there is circuit single failure; trip protection by switchyard outlet breaker is realized power-off; by distribution power automation terminal exchange operation information; the switch at two ends, open failure district; complete after Fault Isolation, by the closure of distribution power automation terminal control electric power incoming line circuit breaker, interconnection switch and on-load switch, realize the power supply in fault-free district.
In the time there is multi-line fault, by the person on duty of distribution main website, according to the prompting of main station system, manual remote control realizes restoring electricity of fault-free district.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.Read after foregoing those skilled in the art, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (5)
1. a Distribution Network Frame wiring construction, it is characterized in that, in this Distribution Network Frame wiring construction, comprise some Single-ring network grid structures, between two groups of Single-ring network grid structures, interconnection is set, this Distribution Network Frame wiring construction is that Single-ring network three power supplys two main are for Connection Mode;
Described Single-ring network grid structure comprises two power stations, and be connected on two ring main unit and some box type transformers between power station, in this Single-ring network grid structure, also comprise an interconnection switch, this interconnection switch is arranged on box type transformer, is normal open switch.
2. Distribution Network Frame wiring construction as claimed in claim 1; it is characterized in that; on each box type transformer and ring main unit, distribution power automation terminal is set; control the switch motion in box type transformer and ring main unit; a feeder line automatic protecting control device is set on each power station; it connects described distribution power automation terminal, controls the action of whole Single-ring network grid structure.
3. Distribution Network Frame wiring construction as claimed in claim 1 or 2, it is characterized in that, described interconnection connects respectively two groups of ring main units in Single-ring network grid structure, and the two ends of interconnection are on-load switch, the on-load switch of one end is normally open, and the on-load switch of the other end is normally off.
4. Distribution Network Frame wiring construction as claimed in claim 3, it is characterized in that, described power station is from different switchyards, described switchyard comprises the first paragraph bus and the second segment bus that connect by block switch, on every section of bus, connect respectively one back into line and some lines that returns back out, the inlet wire of switchyard is connected respectively different transformer stations with inlet wire.
5. Distribution Network Frame wiring construction as claimed in claim 4, is characterized in that, in the outlet of described switchyard, circuit breaker is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147488.6U CN203942280U (en) | 2014-03-31 | 2014-03-31 | Distribution Network Frame wiring construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147488.6U CN203942280U (en) | 2014-03-31 | 2014-03-31 | Distribution Network Frame wiring construction |
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| CN203942280U true CN203942280U (en) | 2014-11-12 |
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| CN201420147488.6U Expired - Lifetime CN203942280U (en) | 2014-03-31 | 2014-03-31 | Distribution Network Frame wiring construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855712A (en) * | 2014-03-31 | 2014-06-11 | 国网上海市电力公司 | Power distribution net rack wiring structure |
| CN104852286A (en) * | 2015-05-28 | 2015-08-19 | 华北电力大学 | Double-loop network distribution system |
| CN104934967A (en) * | 2015-05-28 | 2015-09-23 | 华北电力大学 | Segmented annular distribution network |
| CN105024329A (en) * | 2015-08-04 | 2015-11-04 | 国家电网公司 | Medium-voltage overhead trunk power distribution network construction structure and building method thereof |
| CN106684808A (en) * | 2016-09-08 | 2017-05-17 | 珠海电力设计院有限公司 | Double closed-loop/multiple closed-loop interconnected power distribution network wiring structure and power supply system |
-
2014
- 2014-03-31 CN CN201420147488.6U patent/CN203942280U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855712A (en) * | 2014-03-31 | 2014-06-11 | 国网上海市电力公司 | Power distribution net rack wiring structure |
| CN104852286A (en) * | 2015-05-28 | 2015-08-19 | 华北电力大学 | Double-loop network distribution system |
| CN104934967A (en) * | 2015-05-28 | 2015-09-23 | 华北电力大学 | Segmented annular distribution network |
| CN105024329A (en) * | 2015-08-04 | 2015-11-04 | 国家电网公司 | Medium-voltage overhead trunk power distribution network construction structure and building method thereof |
| CN105024329B (en) * | 2015-08-04 | 2017-07-18 | 国家电网公司 | A kind of empty trunk distribution network construction structure of middle pressure rack and its construction method |
| CN106684808A (en) * | 2016-09-08 | 2017-05-17 | 珠海电力设计院有限公司 | Double closed-loop/multiple closed-loop interconnected power distribution network wiring structure and power supply system |
| CN106684808B (en) * | 2016-09-08 | 2019-03-22 | 珠海电力设计院有限公司 | A kind of the interconnection power distribution network wiring construction and power supply system of more closed loops |
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