CN203813436U - Power distribution network rack wiring structure - Google Patents
Power distribution network rack wiring structure Download PDFInfo
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- CN203813436U CN203813436U CN201420147476.3U CN201420147476U CN203813436U CN 203813436 U CN203813436 U CN 203813436U CN 201420147476 U CN201420147476 U CN 201420147476U CN 203813436 U CN203813436 U CN 203813436U
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- 230000004224 protection Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
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- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 5
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- 238000002955 isolation Methods 0.000 description 2
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Abstract
Disclosed is a power distribution network rack wiring structure. The power distribution network rack wiring structure is characterized in that an overhead line main line is included, the overhead line main line is provided with four main line subsections and three main line interconnection sections, so that a four-subsection and three-interconnection structure is formed, each main line subsection is provided with a plurality of section switches, the section switches are normally-closed switches, each main line interconnection section is provided with an interconnection switch, and the interconnection switches are normally-opened switches. The power distribution network rack wiring structure is high in power distribution reliability, short in failure recovery time, small in outage range, low in transformation, operation and maintenance cost, and is suitable for the areas where overhead lines have already been arranged and the reliability requirement is high.
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 each provinces and regions, the whole nation 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, Zhe Jiudui whole city power supply capacity level is had higher requirement.
1210.41 square kilometres of Pudong New Area, Shanghai whole district areas, from nineteen ninety, for the Party Central Committee, State Council, 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.On July 3rd, 2013, " China (Shanghai, free trade trial zone " granted, settle coastal 28 square kilometres of Pudong New District, indicate the ground zero of Shanghai Metallurgical Industry.As maximum, most active district, the whole city, Pudong New District leads the whole city in all many-sides such as comprising economic development, industrial transformation.
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.
Although the historical power supply reliability of Pudong's core space at home in higher level, is compared the international Advanced Cities such as Singapore, Tokyo, Hong Kong, Paris that represents world-class level, gap is larger.2013, State Grid Corporation of China has promulgated < < distribution network planning designing technique guide rule > >, proposition is defined as A+ region by large size city nucleus, integrate with world-class level, realize 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 guide rule proposition, Dou Dui Pudong core space has proposed 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, according to the III type power distribution station of old standard construction, do not meet current techniques principle;
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 same transformer station (switchyard, different buses, belong to secondary duplicate supply;
4, switchyard total number is on the low side, and 10kV interval is nervous;
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 failure recovery time is short, and power failure range is little, and transformation is low with operation and maintenance expenses.
In order to achieve the above object, the utility model provides a kind of Distribution Network Frame wiring construction, this Distribution Network Frame wiring construction comprises overhead transmission line backbone, this overhead transmission line backbone has four backbone segmentations and three backbone contact sections, form four segmentation three contact structures, in each backbone segmentation, some block switches are set, this block switch is normally closed switch, in each backbone contact section, an interconnection switch is set, this interconnection switch is normal open switch.
Described Distribution Network Frame wiring construction also comprises the some transformer stations that connect described overhead transmission line backbone.
In the outlet of each transformer station, circuit breaker is set.
Fast tripping protection device is set on described circuit breaker.
On described overhead transmission line backbone, connect some overhead transmission line branch lines.
On each overhead transmission line branch line, branch line circuit breaker is set.
On described overhead transmission line branch line, connect some box type transformers, pole type transformer and individual line subscriber.
On each described block switch, interconnection switch, circuit breaker and branch line circuit breaker, distribution power automation terminal is set.
Between each distribution power automation terminal, pass through the direct-connected communication of optical cable.
The utility model power supply reliability is high, and failure recovery time is short, and power failure range is little, and transformation is low with operation and maintenance expenses, is applicable to existing overhead wire, and the higher region of reliability requirement.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present utility model.
Fig. 2～Fig. 4 is that the feeder line of the utility model under main line failure condition protected schematic diagram automatically.
Fig. 5～Fig. 6 is that the feeder line of the utility model under branch line failure condition protected schematic diagram automatically.
Embodiment
Following according to Fig. 1～Fig. 6, illustrate preferred embodiment of the present utility model.
The utility model provides a kind of Distribution Network Frame wiring construction, this Distribution Network Frame wiring construction comprises overhead transmission line backbone, this overhead transmission line backbone has four backbone segmentations and three backbone contact sections, form four segmentation three contact structures, in each backbone segmentation, some block switches are set, this block switch is normally closed switch, in each backbone contact section, an interconnection switch is set, and this interconnection switch is normal open switch.
This Distribution Network Frame wiring construction also comprises the some transformer stations that connect described overhead transmission line backbone, in the outlet of each transformer station, circuit breaker is set, and fast tripping protection device is set on this circuit breaker.
On this overhead transmission line backbone, connect some overhead transmission line branch lines, on each overhead transmission line branch line, branch line circuit breaker is set.
On described overhead transmission line branch line, connect some box type transformers, pole type transformer and individual line subscriber.
On each described block switch, interconnection switch, circuit breaker and branch line circuit breaker, distribution power automation terminal is set, between each distribution power automation terminal, passes through the direct-connected communication of optical cable.
As shown in Figure 1, it is specific embodiment of the utility model circuit diagram, this overhead transmission line backbone 11 has four backbone segmentations and three backbone contact sections, the first segmentation of backbone, the second segmentation, the 3rd segmentation, the 4th segmentation and one of them backbone interconnection are " work " font and distribute, the first segmentation of overhead transmission line backbone is connected transformer station 1 with one end of the 3rd segmentation, one end of the second segmentation connects transformer station 2, one end of the 4th segmentation connects transformer station 3, circuit breaker 101 is set in the outlet of transformer station, the first segmentation of backbone and the 3rd segmentation are as backbone contact section, the first segmentation of backbone, the second segmentation, the 3rd segmentation, some block switches 102 are all set in the 4th segmentation, in backbone contact section, an interconnection switch 103 is all set, on each overhead transmission line branch line 12, branch line circuit breaker 104 is set, on overhead transmission line branch line 12, connect some box type transformers 106, pole type transformer 105 and individual line subscriber 107.
While breaking down in Distribution Network Frame wiring construction, the utility model can be realized Fault Isolation and restore electricity, and for electrical network overhead distribution, 80% of overhead transmission line fault is transient fault.Isolation transient fault, can increase substantially power supply reliability, so to overhead distribution, consider 2 kinds of possibilities of transient fault and permanent fault.During line failure, wish to deal with problems and do not expand on the spot, reclosing is the effective means of fixing a breakdown rapidly and restoring electricity after transient fault occurring.
The overhead transmission line four segmentation three contact structure 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 two kinds of feed protections in situation:
One, under normal operating mode, there is backbone fault:
1, as shown in Figure 2, fault occurs between block switch QS1 and block switch QS2, after breaking down, distribution power automation terminal on the wire-outgoing breaker QF1 of transformer station 2 and corresponding block switch QS1 and block switch QS2 can detect fault current, distribution power automation terminal starts, and determines fault section.All the other circuit breakers do not detect fault current, and corresponding distribution power automation terminal does not start.
2, as shown in Figure 2, the fast tripping protection device on the wire-outgoing breaker QF1 of transformer station 2 carries out fast tripping protection action, and tripping operation disconnects, and all the other circuit breakers are failure to actuate.
3, the wire-outgoing breaker QF1 reclosing of transformer station 2, setting time is 0.7S conventionally.
If transient fault, the wire-outgoing breaker QF1 of transformer station is after single shot reclosing, and reclosing is successful, and overhead transmission line restores electricity.
If permanent fault, the tripping operation of the wire-outgoing breaker QF1 of transformer station post reclosing acceleration disconnects.
4, as shown in Figure 3, block switch QS1 and the block switch QS2 tripping operation of by distribution power automation terminal, controlling fault section two ends disconnect, isolated fault.
5, as shown in Figure 4, it is closed that distribution power automation terminal is controlled interconnection switch LS3, and non-fault zone is restored electricity.
Two, under normal operating mode, there is branch line fault:
1, as shown in Figure 5, fault occurs in the branched line at branch line circuit breaker Q S4 place, after breaking down, the distribution power automation terminal of the 2 wire-outgoing breaker QF1 of transformer station, respective bins block switch (block switch QS1 and block switch QS2) and respective branch line circuit breaker Q S4 can detect fault current, distribution power automation terminal starts, by judging definite fault section.
2, as shown in Figure 5, the fast tripping protection device on the 2 wire-outgoing breaker QF1 of transformer station carries out fast tripping protection action, and tripping operation disconnects, the branch line circuit breaker Q S4 disconnection of tripping, and all the other circuit breakers are failure to actuate.
3, as shown in Figure 6, transformer station's 2 wire-outgoing breaker QF1 reclosings, setting time is 0.7S conventionally.
After reclosing, do not affect backbone power supply.
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.Those skilled in the art, read after foregoing, for multiple modification of the present utility model with to substitute will be all apparent.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (9)
1. a Distribution Network Frame wiring construction, it is characterized in that, this Distribution Network Frame wiring construction comprises overhead transmission line backbone, this overhead transmission line backbone has four backbone segmentations and three backbone contact sections, form four segmentation three contact structures, in each backbone segmentation, some block switches are set, this block switch is normally closed switch, in each backbone contact section, an interconnection switch is set, this interconnection switch is normal open switch.
2. Distribution Network Frame wiring construction as claimed in claim 1, is characterized in that, described Distribution Network Frame wiring construction also comprises the some transformer stations that connect described overhead transmission line backbone.
3. Distribution Network Frame wiring construction as claimed in claim 2, is characterized in that, in the outlet of each transformer station, circuit breaker is set.
4. Distribution Network Frame wiring construction as claimed in claim 3, is characterized in that, fast tripping protection device is set on described circuit breaker.
5. Distribution Network Frame wiring construction as claimed in claim 4, is characterized in that, connects some overhead transmission line branch lines on described overhead transmission line backbone.
6. Distribution Network Frame wiring construction as claimed in claim 5, is characterized in that, on each overhead transmission line branch line, branch line circuit breaker is set.
7. Distribution Network Frame wiring construction as claimed in claim 6, is characterized in that, on described overhead transmission line branch line, connects some box type transformers, pole type transformer and individual line subscriber.
8. as the Distribution Network Frame wiring construction as described in any one in claim 1-7, it is characterized in that, on each described block switch, interconnection switch, circuit breaker and branch line circuit breaker, distribution power automation terminal is set.
9. Distribution Network Frame wiring construction as claimed in claim 8, is characterized in that, passes through the direct-connected communication of optical cable between each distribution power automation terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147476.3U CN203813436U (en) | 2014-03-31 | 2014-03-31 | Power distribution network rack wiring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147476.3U CN203813436U (en) | 2014-03-31 | 2014-03-31 | Power distribution network rack wiring structure |
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| CN203813436U true CN203813436U (en) | 2014-09-03 |
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| CN201420147476.3U Expired - Lifetime CN203813436U (en) | 2014-03-31 | 2014-03-31 | Power distribution network rack wiring structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872686A (en) * | 2014-03-31 | 2014-06-18 | 国网上海市电力公司 | Power distribution network rack wiring structure |
| CN107607801A (en) * | 2017-08-17 | 2018-01-19 | 国网北京市电力公司 | Nuclear-phase method, the apparatus and system of overhead transmission line |
| CN108631312A (en) * | 2018-06-19 | 2018-10-09 | 国网福建省电力有限公司漳州供电公司 | A kind of power distribution network mode of connection |
-
2014
- 2014-03-31 CN CN201420147476.3U patent/CN203813436U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872686A (en) * | 2014-03-31 | 2014-06-18 | 国网上海市电力公司 | Power distribution network rack wiring structure |
| CN107607801A (en) * | 2017-08-17 | 2018-01-19 | 国网北京市电力公司 | Nuclear-phase method, the apparatus and system of overhead transmission line |
| CN108631312A (en) * | 2018-06-19 | 2018-10-09 | 国网福建省电力有限公司漳州供电公司 | A kind of power distribution network mode of connection |
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Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |