CN104466949A - Method for 10 kV main and auxiliary line ring grid layout in small-medium urban districts in plain area - Google Patents
Method for 10 kV main and auxiliary line ring grid layout in small-medium urban districts in plain area Download PDFInfo
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- CN104466949A CN104466949A CN201410659376.3A CN201410659376A CN104466949A CN 104466949 A CN104466949 A CN 104466949A CN 201410659376 A CN201410659376 A CN 201410659376A CN 104466949 A CN104466949 A CN 104466949A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The invention provides a method for the 10 kV main and auxiliary line ring grid layout in small-medium urban districts in a plain area. A structure that main and auxiliary trunk lines and outdoor ring main units are combined is adopted, and main trunk lines erected by overhead insulated conductors are adopted for connection between an outgoing line of one transformer substation and an outgoing line of the other transformer substation; meanwhile the outdoor ring main units are arranged along a crossroad, lines enter from the main trunk lines, and four lines go out and are connected to branch lines in the four directions; longitudinal lines are erected in a main and auxiliary double-circuit same-pole mode, transverse lines are erected in an auxiliary trunk line one-circuit mode, and the transverse lines are connected with auxiliary lines of the other circuit through column switches; users and other equipment are connected with the auxiliary lines, and the main trunk lines are not connected with any user. By the adoption of the design method, the advantages of cable lines and a hand-in-hand ring network structure are integrated, new materials and new equipment such as the overhead insulated wires and the outdoor ring main units are fully utilized, the structure of a power distribution network is further optimized, and the power supply reliability of a small-medium urban network can be further improved.
Description
Technical field:
The present invention relates to field of power, be specifically related to a kind of method for city, small and medium-sized cities, plains region 10kV major-minor wire loop grid layout.
Background technology:
Urban power distribution network is after large-scale redevelopment, and structure is improved greatly.The list in past return radial construction replace by the ring network structure hand in hand of trunk segmentation, electrical power distribution automatization system has also been introduced in many cities, and urban electricity supply reliability reaches higher standard.But along with power customer is to the progressively raising of power supply reliability demand, power supply reliability, owing to limiting by fund and construction criteria, is improved difficult further in city, small and medium-sized cities.
Custom power equipment fails to transform accordingly with urban network reconstruction on the one hand, and the distribution system fault that subscriber equipment fault causes is still very frequent.Existing ring main unit segmental structure can not be limited in the scope of failed subs criber power failure, causes power failure in a big way.The power supply reliability of cable dual-ring network structure is higher on the other hand, but investment is too large, and general small and medium-sized cities all do not have ability to apply.
City, existing small and medium-sized cities generally adopts " grading ring web frame " with block switch boundary, is no matter the automatism isolation of fault, or accident treatment drag switch, all whole one section must be stopped.The power supply reliability of power distribution network to be improved further, the fault outage scope that subscriber equipment causes must be tried every possible means to be limited on the branch line of this user; Current distribution net work structure can not reach this requirement.Therefore, must be improved from distribution net work structure, the further raising of power supply reliability could be realized.
Summary of the invention:
For the deficiencies in the prior art, the object of this invention is to provide a kind of city, small and medium-sized cities 10kV major-minor wire loop net method for designing for plains region grid layout, the present invention effectively can solve the Distributing network structure optimization of city, small and medium-sized cities, power supply reliability improves the contradiction with fund, criteria limit, the realization of power distribution automation is incorporated into more economical simultaneously, more reliable, the field more easily realized.
A kind of method for city, small and medium-sized cities, plains region 10kV major-minor wire loop grid layout provided by the invention, i.e. " major and minor main line+outdoor ring main unit " structure, its improvements are, described method comprises the steps:
(1) set up backbone and adopt suspended insulated guide wire, from transformer station's outlet to the contact point of another transformer station's outlet, contact point is outdoor ring main unit contact.
(2) crossroad, city along gridding arranges outdoor ring main unit, backbone inlet wire, and go out four routes and be connected to four direction branch line, branch line is designated as by-pass.
(3) axial route is that major and minor main line double back is joint used; Lateral route is that secondary main list returns erection, is got in touch with by the by-pass of interconnection switch and another circuit on a post.
(4) user connects by-pass; Longitudinal backbone does not take over what user and breaker apparatus, comprises and does not connect public distribution transformer.
Major and minor main line+outdoor ring main unit Distributing network structure that the present invention proposes, in described step 1, can carry out backbone erection by following two kinds of situations.
On the basis of " handing in hand " grading ring web frame that city, the small and medium-sized cities 10kV power distribution network of gridding layout is generally carried out, transform major and minor wire loop web frame as.Only original track remodelling need be become common-tower double-circuit lines, newly-increased secondary main road, original circuit is as basic routing line, and customer charge is transferred to by-pass, increases outdoor ring main unit newly at crossing.
For the Xincheng District, small and medium-sized cities of gridding layout or new extended area due to fund or construction criteria limited when for improving the reliable and newly-built major and minor wire loop web frame 10kV distribution network of power supply to improve power supply reliability further.Major and minor main line is set up on double circuits on same tower road, and by-pass is mains lead cross section 1/3rd.
In described step 1, for realizing the further raising of power supply reliability, what user basic routing line should not take over, and does not also install breaker apparatus.
In described step 2, basic routing line and another basic routing line adopt outdoor ring main unit to get in touch with; When basic routing line fault or the maintenance of outdoor contact ring main unit, powered from opposite side by by-pass network interconnecting circuit, backbone adopts outdoor ring main unit contact, achieve circuit breaker on bar to land, accident treatment does not need pole-climbing, can also operate under special weather, can greatly improve accident treatment speed, shorten the accident interruption time, thus improve power supply reliability further.
In described step 2, by installing motor-operating mechanism and remote control terminal additional to open air contact ring main unit, realize the various functions of distribution automation, at the in-built neat all kinds of indicating instrument of ring main unit, make operational inspection and accident treatment personnel can understand field data easily.
In described step 3, the newly-built major and minor main line of axial route is that double circuits on same tower road or single loop are transformed into double loop, and secondary main conductor cross-section is 1/3rd of backbone conductor cross-section.
In described step 3, lateral route secondary main list returns erection, is got in touch with by the by-pass of network interconnecting circuit on post and another circuit.
In described step 4, user connects the longitudinal backbone of by-pass and does not take over what user, comprise and do not connect public distribution transformer, ring main unit outlet can be had to be that neighbouring low capacity user goes out special line and powers, in minimizing customer investment simultaneously, additionally reduce transformer station interval to take in a large number, save the problem in public line corridor.
A kind of city, small and medium-sized cities 10kV major-minor wire loop net method for designing for plains region grid layout provided by the invention, after the license of future economy condition or standard upgrading, when overhead transmission line cable dissolves ground, built on stilts major and minor line is changed to cable and enters ground along original path, by-pass is by increasing cable branch box and the network interconnecting circuit that lands.
Compared with the prior art, the beneficial effect that the present invention reaches is:
1, a kind of city, small and medium-sized cities 10kV major-minor wire loop net method for designing for plains region grid layout provided by the invention, namely " major and minor main line+outdoor ring main unit " structure, is applicable to the raising of city, the small and medium-sized cities power supply reliability of plains region grid layout.
2, the present invention effectively solves the Distributing network structure optimization of city, small and medium-sized cities, and power supply reliability improves the contradiction with fund, criteria limit, is incorporated into more economical by the realization of power distribution automation simultaneously, more reliably, and the field more easily realized.
3, the present invention is integrated with cable line and the advantage of ring network structure of handing in hand, make full use of the new material such as suspended insulated guide wire, outdoor ring main unit, new equipment, distribution net work structure is optimized further, the urban distribution network power supply reliability of small and medium-sized cities gridding is improved further.
Accompanying drawing illustrates:
Accompanying drawing 1 is wiring construction schematic diagram of the present invention;
Embodiment:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with accompanying drawing, the specific embodiment of the present invention being described in further detail.
As shown in Figure 1, the present invention makes full use of the new material such as suspended insulated guide wire, outdoor ring main unit, new equipment, the advantage of integrated cable circuit and hand in hand ring network structure, adopts " the new design of major and minor main line+outdoor ring main unit composition 10kV distribution net work structure.Not enough in city, small and medium-sized cities distribution construction fund, when standard is not high, improve power supply reliability by the optimization of Distributing network structure as much as possible, thus provide a kind of city, small and medium-sized cities 10kV major-minor wire loop net method for designing for plains region grid layout.
Wiring construction schematic diagram as shown in Figure 1, this method comprises the steps:
(1) set up backbone and adopt suspended insulated guide wire, from transformer station's outlet to the contact point (outdoor ring main unit contact) of another transformer station's outlet.
(2) crossroad, city along gridding arranges outdoor ring main unit, backbone inlet wire, goes out four routes and is connected to four direction branch line (by-pass).
(3) axial route is that major and minor main line double back is joint used; Lateral route is that secondary main list returns erection, is got in touch with by the by-pass of interconnection switch and another circuit on a post.
(4) user connects by-pass; What user longitudinal backbone does not take over, and comprises and does not connect public distribution transformer.
In described step 1, determine that following two kinds of usable conditions carry out backbone erection,
1), on the basis of " handing in hand " grading ring web frame city, the small and medium-sized cities 10kV power distribution network of gridding layout generally carried out, major and minor wire loop web frame is transform as.Only original track remodelling need be become common-tower double-circuit lines, newly-increased secondary main road, original circuit is as basic routing line, and customer charge is transferred to by-pass, increases outdoor ring main unit newly at crossing.
2) for the Xincheng District, small and medium-sized cities of gridding layout or new extended area due to fund or construction criteria limited when for improving the reliable and newly-built major and minor wire loop web frame 10kV distribution network of power supply to improve power supply reliability further.Major and minor main line is set up on double circuits on same tower road, and by-pass is mains lead cross section 1/3rd.
3), in described step 1, what user basic routing line does not take over, and does not install other equipment such as circuit breaker yet.Trunk roads and another basic routing line adopt outdoor ring main unit to get in touch with; When basic routing line fault or the maintenance of outdoor contact ring main unit, powered from opposite side by by-pass network interconnecting circuit.
4), in described step 2, basic routing line adopts outdoor ring main unit contact, achieves circuit breaker on bar and lands, accident treatment does not need pole-climbing, can also operate under special weather, can greatly improve accident treatment speed, shorten the accident interruption time, thus improve power supply reliability further.
5), in described step 2, by installing motor-operating mechanism and remote control terminal additional to open air contact ring main unit, the various functions of distribution automation can be realized.Also can, at the in-built neat all kinds of indicating instrument of ring main unit, make operational inspection and accident treatment personnel can understand field data easily.
6), in described step 3, the newly-built major and minor main line of axial route is that double circuits on same tower road or single loop are transformed into double loop, and secondary main conductor cross-section is 1/3rd of backbone conductor cross-section.
7) in described step 3, lateral route secondary main list returns erection, is got in touch with by the by-pass of network interconnecting circuit on post and another circuit.
8) in described step 4, user connects the longitudinal backbone of by-pass and does not take over what user, comprise and do not connect public distribution transformer, neighbouring ring main unit outlet can be had to be that low capacity user goes out special line and powers, in minimizing customer investment simultaneously, additionally reduce transformer station interval to take in a large number, save the problem in public line corridor.
9) a kind of city, small and medium-sized cities 10kV major-minor wire loop net method for designing for plains region grid layout provided by the invention, after the license of future economy condition or standard upgrading, when overhead transmission line cable dissolves ground, built on stilts major and minor line is changed to cable and enters ground along original path, by-pass is by increasing cable branch box and the network interconnecting circuit that lands.
Finally should be noted that: what describe in above-described embodiment and specification just illustrates that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; the technical staff of the industry is to be understood that solution; the present invention is not restricted to the described embodiments; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.
Claims (8)
1. for a method for city, small and medium-sized cities, plains region 10kV major-minor wire loop grid layout, i.e. " major and minor main line+outdoor ring main unit " structure, it is characterized in that, described method comprises the steps:
(1) set up backbone and adopt suspended insulated guide wire, from transformer station's outlet to the contact point of another electric substation's outlet, contact point is outdoor ring main unit contact;
(2) crossroad, city along gridding arranges outdoor ring main unit, backbone inlet wire, and go out four routes and be connected to four direction branch line, branch line is designated as by-pass;
(3) axial route is that major and minor main line double back is joint used; Lateral route is that secondary main list returns erection, is got in touch with by the by-pass of interconnection switch and another circuit on a post;
(4) user connects by-pass; What user longitudinal backbone does not take over, and comprises and does not connect public distribution transformer.
2. the method for claim 1, is characterized in that, described right comprises following two kinds of situations:
(1), on the basis of " handing in hand " grading ring web frame city, the small and medium-sized cities 10kV power distribution network of gridding layout generally carried out, major and minor wire loop web frame situation is transform as.
(2) for the Xincheng District, small and medium-sized cities of gridding layout or new extended area due to fund or construction criteria limited when for improving the reliable and newly-built major and minor wire loop web frame 10kV distribution network of power supply to improve power supply reliability situation further.
3. the method for claim 1, is characterized in that, in described step 1, what user main line does not take over, and does not install breaker apparatus yet; Trunk roads and another basic routing line adopt outdoor ring main unit to get in touch with; When main line fault or the maintenance of outdoor contact ring main unit, powered from opposite side by by-pass network interconnecting circuit.
4. the method for claim 1, it is characterized in that, in described step 2, main line adopts outdoor ring main unit contact, and achieve circuit breaker on bar and land, accident treatment does not need pole-climbing, can also operate under special weather, can greatly improve accident treatment speed, shorten the accident interruption time, thus improve power supply reliability further.
5. the method for claim 1, is characterized in that, in described step 2, by installing motor-operating mechanism and remote control terminal additional to open air contact ring main unit, can realize the various functions of distribution automation; At the in-built neat all kinds of indicating instrument of ring main unit, make operational inspection and accident treatment personnel can understand field data easily.
6. the method for claim 1, is characterized in that, in described step 3, the newly-built major and minor main line of axial route is that double circuits on same tower road or single loop are transformed into double loop, and secondary main conductor cross-section is 1/3rd of backbone conductor cross-section.
7. the method for claim 1, is characterized in that, in described step 3, lateral route secondary main list returns erection, is got in touch with by the by-pass of network interconnecting circuit on post and another circuit.
8. the method for claim 1, is characterized in that, in described step 4, user connects the longitudinal backbone of by-pass and do not take over what user, comprises and does not connect public distribution transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410659376.3A CN104466949A (en) | 2014-11-18 | 2014-11-18 | Method for 10 kV main and auxiliary line ring grid layout in small-medium urban districts in plain area |
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| CN201410659376.3A CN104466949A (en) | 2014-11-18 | 2014-11-18 | Method for 10 kV main and auxiliary line ring grid layout in small-medium urban districts in plain area |
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| CN104466949A true CN104466949A (en) | 2015-03-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529702A (en) * | 2016-01-18 | 2016-04-27 | 国网天津市电力公司 | Method for improvement on electric network and service expansion by using single-ring network structure |
| CN108360907A (en) * | 2018-04-13 | 2018-08-03 | 国网冀北电力有限公司迁西县供电分公司 | A kind of 10kV circuits dual power supply gets in touch with hand in hand structure and its installation and application method |
| CN111555458A (en) * | 2020-05-24 | 2020-08-18 | 赫兹曼电力（广东）有限公司 | Distributed feeder automation system of looped network circuit architecture |
| CN111817288A (en) * | 2020-05-26 | 2020-10-23 | 广西电网有限责任公司电力科学研究院 | Site arrangement method and structure applied to power distribution network true test platform |
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| CN101930563A (en) * | 2010-07-23 | 2010-12-29 | 中国电力科学研究院 | Block supply-based distribution network planning design method |
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- 2014-11-18 CN CN201410659376.3A patent/CN104466949A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101930563A (en) * | 2010-07-23 | 2010-12-29 | 中国电力科学研究院 | Block supply-based distribution network planning design method |
Non-Patent Citations (1)
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| 秦勇，郭强: "10kV配电网结构的改进——主副线环网结构", 《供用电》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529702A (en) * | 2016-01-18 | 2016-04-27 | 国网天津市电力公司 | Method for improvement on electric network and service expansion by using single-ring network structure |
| CN108360907A (en) * | 2018-04-13 | 2018-08-03 | 国网冀北电力有限公司迁西县供电分公司 | A kind of 10kV circuits dual power supply gets in touch with hand in hand structure and its installation and application method |
| CN108360907B (en) * | 2018-04-13 | 2024-03-22 | 国网冀北电力有限公司迁西县供电分公司 | 10kV line dual-power hand-in-hand connection structure and installation and use method thereof |
| CN111555458A (en) * | 2020-05-24 | 2020-08-18 | 赫兹曼电力（广东）有限公司 | Distributed feeder automation system of looped network circuit architecture |
| CN111817288A (en) * | 2020-05-26 | 2020-10-23 | 广西电网有限责任公司电力科学研究院 | Site arrangement method and structure applied to power distribution network true test platform |
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Application publication date: 20150325 |