CN204577857U - A kind of 110kV transformer station adopting novel wire connecting way - Google Patents

A kind of 110kV transformer station adopting novel wire connecting way Download PDF

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Publication number
CN204577857U
CN204577857U CN201520176687.4U CN201520176687U CN204577857U CN 204577857 U CN204577857 U CN 204577857U CN 201520176687 U CN201520176687 U CN 201520176687U CN 204577857 U CN204577857 U CN 204577857U
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CN
China
Prior art keywords
main
breaker
pressure side
side circuit
transformer
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Expired - Fee Related
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CN201520176687.4U
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Chinese (zh)
Inventor
魏玉荣
王博
刘季宏
贾凯
胡小男
李大鹏
陈滨
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State Grid Corp of China SGCC
Jinan Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Jinan Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Priority to CN201520176687.4U priority Critical patent/CN204577857U/en
Application granted granted Critical
Publication of CN204577857U publication Critical patent/CN204577857U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of 110kV transformer station adopting novel wire connecting way, mainly solve the existing mode of connection Problems existing of transformer station that 110kV outlet is 4 times, this 110kV transformer station returns back out line circuit respectively by 4 and is connected with the 220kV transformer station accessing electrical network with power plant, and it comprises 4 wire-outgoing breakers, 4 110kV buses, 2 bus section breakers, 4 main transformer high-pressure side circuit breakers, 4 main transformers, 4 main transformer low-pressure side circuit breakers, 4 main electrical schemes and 3 main electrical scheme section breakeres.The transformer station employing staggered form two single-trunk segmental wiring mode of the utility model by 110kV outlet being 4 times, solve the problem that duplicate supply looped network runs, and by being arranged symmetrically with, include a crossing elimination, thus the problem avoiding transmission line intersection and cause occurs, lays a good foundation for optimizing Transmission Line Design scheme.

Description

A kind of 110kV transformer station adopting novel wire connecting way
Technical field
The utility model relates to power system transformer substation technical field, specifically a kind of 110kV transformer station adopting novel wire connecting way, for solving the existing mode of connection Problems existing of transformer station that 110kV outlet is 4 times.
Background technology
The network that electric power system is made up of transformer, transmission line, power consumption equipment, it comprise by electricity or the mode of machinery connect all devices in a network.These interconnection elements in electric power system can be divided into two classes, one class is force device, they are produced (generator), conversion (transformer, rectifier, inverter), conveying to electric energy and distribute (power transmission line, power distribution network), consumption (load); Another kind of is control element, and they change the running status of system, as the field regulator of synchronous generator, and speed regulator and relay etc.
Transformer station is the intermediate link of contact power plant and user, voltage of transformation in electric power system, acceptance and distribution electric energy, the flow direction of control electric power and the power equipment of adjustment voltage, it is got up by the grid contact of its transformer by each step voltage, plays a part conversion and distributes electric energy.
Due to condition restriction, a lot of 110kV outlet is the 110kV transformer station existence of 4 times in addition, and according to the load character of these transformer stations, it is subject to a lot of restriction on connection type is selected, and the existing mode of connection brings a lot of problem.
The main electrical scheme pattern of current 110kV transformer station generally adopts the wiring of line change group, bridge-type connection, double bus scheme and single-trunk segmental wiring.
1, the line change group wiring the most succinct mode of connection that is that a kind of wiring is the simplest, equipment is minimum, do not need high voltage distribution installation, but some 110kV transformer station Bu Shichun end transformer station, also have and certain pass through capacity requirement, and security personnel's capacity of load is larger, be difficult to like this introduce from other power supplys, asking of the power circuit of self can only be leaned on for subsequent use each other, and therefore, the wiring of line change group is difficult to meet reliability requirement.
2, bridge-type connection is divided into two internal bridge and two outer bridging line two kinds.
(1) two internal bridge.Bridge-type connection and expand bridge-type connection and be generally used for 110kV circuit outlet 3 times and following, is unsuitable for the situation of 110kV circuit outlet more than 4 times.If transformer station's load does not have the requirement of penetration, can adopt two internal bridge, it is by the transformer of two inlet wire, and transformer station transforms from internal bridge and comes.Operating experience shows for many years, and internal bridge is a kind of main wiring mode of safe, reliable, good economy performance.If although penetration is intermittent, and penetration is little, and internal bridge is when penetration runs, and the secondary carrying out circuit breaker is adjusted difficulty, and this situation then should not adopt two internal bridge.
(2) two outer bridging line.Consider the penetration of the electric power system that power plant is grid-connected.Can adopt two outer bridging line mode, but consider that some transformer station's loads are comparatively large, the operating flexibility impact of two outer bridging line mode on transformer station inside is comparatively large, so then should not adopt two outer bridging line mode.
3, double bus scheme mode be that a kind of power supply reliability is the highest, scheduling flexibly, enlarging is convenient and be convenient to the main wiring mode that realizes, but according to (35-110kV substations ' design specification), 110kV circuit is 6 time and above, double bus scheme should be adopted, if but the outlet of 110kV transformer station only has 4 times, then do not reach double-bus configuration condition.
4, single-trunk segmental wiring uses circuit breaker bus section, can draw two loops, by two Power supplies to responsible consumer from different section; When one section of bus breaks down, faulty section excises by section breaker automatically, ensures normal reach bus uninterrupted power supply and does not cause responsible consumer to have a power failure.
As can be seen from above analysis, the main electrical scheme for the 110kV transformer station only with 4 times 110kV outlets should be comparatively suitable to configure single-trunk segmental wiring.
Conventional single-trunk segmental wiring mode as shown in Figure 1.There is 4 telegram in reply Yuan Lai power plant and the 220kV transformer station 110kV bus of the 110kV transformer station of 4 times 110kV outlets.If adopt single-trunk segmental wiring to run causing 110kV power grid for a long time, and utility grid is in order to avoid circulation and be convenient to administration of power networks at present, and 110kV one-level electrical network is generally do not allow two power grids operations.Therefore conventional single-trunk segmental wiring mode can not meet the requirement of administration of power networks system.
In order to avoid the problem of power supply looped network, the mode of connection of double bus scheme and single-busbar multi-segment can be adopted to solve, but double bus scheme and single-busbar multi-segment wiring mode in economy and flexibility side all obvious Shortcomings.
Utility model content
For above-mentioned deficiency, the utility model provides a kind of 110kV transformer station adopting novel wire connecting way, effectively can solve the existing mode of connection Problems existing of transformer station that 110kV outlet is 4 times.
The technical scheme in the invention for solving the technical problem is: a kind of 110kV transformer station adopting novel wire connecting way, described 110kV transformer station is arranged between the 220kV transformer station of power plant and access electrical network, and return back out line circuit by 2 and be connected with power plant, return back out line circuit by 2 to be connected with 220kV transformer station, it is characterized in that, comprise the first wire-outgoing breaker, second wire-outgoing breaker, 3rd wire-outgoing breaker, 4th wire-outgoing breaker, one 110kV bus, 2nd 110kV bus, 3rd 110kV bus, 4th 110kV bus, first bus section breaker, second bus section breaker, first main transformer high-pressure side circuit breaker, second main transformer high-pressure side circuit breaker, 3rd main transformer high-pressure side circuit breaker, 4th main transformer high-pressure side circuit breaker, first main transformer, second main transformer, 3rd main transformer, 4th main transformer, first main transformer low-pressure side circuit breaker, second main transformer low-pressure side circuit breaker, 3rd main transformer low-pressure side circuit breaker, 4th main transformer low-pressure side circuit breaker, first main electrical scheme, second main electrical scheme, 3rd main electrical scheme, 4th main electrical scheme, first main electrical scheme section breaker, second main electrical scheme section breaker and the 3rd main electrical scheme section breaker, a described 110kV bus is connected with supply line of power plant first by the first wire-outgoing breaker, and is connected with the first main transformer by the first main transformer high-pressure side circuit breaker, and described first main transformer is connected with the first main electrical scheme by the first main transformer low-pressure side circuit breaker, described 2nd 110kV bus is connected with supply line of power plant second by the second wire-outgoing breaker, and is connected with the second main transformer by the second main transformer high-pressure side circuit breaker, and described second main transformer is connected with the second main electrical scheme by the second main transformer low-pressure side circuit breaker, described 3rd 110kV bus is connected with supply line of 220kV transformer station first by the 3rd wire-outgoing breaker, and be connected with the 3rd main transformer by the 3rd main transformer high-pressure side circuit breaker, described 3rd main transformer is connected with the 3rd main electrical scheme by the 3rd main transformer low-pressure side circuit breaker, described 4th 110kV bus is connected with supply line of 220kV transformer station second by the 4th wire-outgoing breaker, and be connected with the 4th main transformer by the 4th main transformer high-pressure side circuit breaker, described 4th main transformer is connected with the 4th main electrical scheme by the 4th main transformer low-pressure side circuit breaker, be connected with the first bus section breaker between 2nd 110kV bus and the 3rd 110kV bus, between a 110kV bus and the 4th 110kV bus, be connected with the second bus section breaker, the first main electrical scheme section breaker is connected with between first main electrical scheme and the second main electrical scheme, be connected with the second main electrical scheme section breaker between second main electrical scheme and the 3rd main electrical scheme, between the 3rd main electrical scheme and the 4th main electrical scheme, be connected with the 3rd main electrical scheme section breaker.
Preferably, the two ends of the first described wire-outgoing breaker, the second wire-outgoing breaker, the 3rd wire-outgoing breaker and the 4th wire-outgoing breaker are respectively arranged with outlet isolating switch.
Preferably, the first described bus section breaker and the two ends of the second bus section breaker are respectively arranged with sectionalizer.
Preferably, the two ends of the first described main electrical scheme section breaker, the second main electrical scheme section breaker and the 3rd main electrical scheme section breaker are respectively arranged with sectionalizer.
Preferably, the two ends of the first described main transformer high-pressure side circuit breaker, the second main transformer high-pressure side circuit breaker, the 3rd main transformer high-pressure side circuit breaker and the 4th main transformer high-pressure side circuit breaker are respectively arranged with sectionalizer.
Preferably, the two ends of the first described main transformer low-pressure side circuit breaker, the second main transformer low-pressure side circuit breaker, the 3rd main transformer low-pressure side circuit breaker and the 4th main transformer low-pressure side circuit breaker are respectively arranged with sectionalizer.
The beneficial effects of the utility model are: the transformer station employing staggered form two single-trunk segmental wiring mode of the utility model by 110kV outlet being 4 times, solve the problem that duplicate supply looped network runs, and by being arranged symmetrically with, include a crossing elimination, thus the problem avoiding transmission line intersection and cause occurs, lays a good foundation for optimizing Transmission Line Design scheme.
The utility model only has the feature of the transformer station of 4 times for 110kV outlet, two single-trunk segmental wiring mode is adopted to meet the needs of some engineerings preferably, although this pair of sectionalized single busbar connection main wiring mode is comparatively rare, but under certain engineering specific condition, a kind of flexible, applicable mode of connection of can yet be regarded as.
Accompanying drawing explanation
Fig. 1 is the structural representation of the 11110kV transformer substation main connection system adopting single-trunk segmental wiring mode in prior art;
Fig. 2 is structural representation of the present utility model;
In figure, 11 supply lines of power plant first, 12 supply lines of power plant second, 13 supply lines of 220kV transformer station first, 14 supply lines of 220kV transformer station second, 21 first wire-outgoing breakers, 22 second wire-outgoing breakers, 23 the 3rd wire-outgoing breakers, 24 the 4th wire-outgoing breakers, 31 the one 110kV buses, 32 the 2nd 110kV buses, 33 the 3rd 110kV buses, 34 the 4th 110kV buses, 41 first bus section breakers, 42 second bus section breakers, 51 first main transformer high-pressure side circuit breakers, 52 second main transformer high-pressure side circuit breakers, 53 the 3rd main transformer high-pressure side circuit breakers, 54 the 4th main transformer high-pressure side circuit breakers, 61 first main transformers, 62 second main transformers, 63 the 3rd main transformers, 64 the 4th main transformers, 71 first main transformer low-pressure side circuit breakers, 72 second main transformer low-pressure side circuit breakers, 73 the 3rd main transformer low-pressure side circuit breakers, 74 the 4th main transformer low-pressure side circuit breakers, 81 the one 35kV main electrical schemes, 82 the 2nd 35kV main electrical schemes, 83 the 3rd 35kV main electrical schemes, 84 the 4th 35kV main electrical schemes, 91 first main electrical scheme section breakeres, 92 second main electrical scheme section breakeres, 93 the 3rd main electrical scheme section breakeres.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.In addition, the utility model can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.It should be noted that parts illustrated in the accompanying drawings are not necessarily drawn in proportion.The utility model eliminates the description of known assemblies and treatment technology and process to avoid unnecessarily limiting the utility model.
As shown in Figure 2, a kind of 110kV transformer station adopting novel wire connecting way of the present utility model, described 110kV transformer station is arranged between the 220kV transformer station of power plant and access electrical network, and it comprises the first wire-outgoing breaker 21, second wire-outgoing breaker 22, 3rd wire-outgoing breaker 23, 4th wire-outgoing breaker 24, one 110kV bus 31, 2nd 110kV bus 32, 3rd 110kV bus 33, 4th 110kV bus 34, first bus section breaker 41, second bus section breaker 42, first main transformer high-pressure side circuit breaker 51, second main transformer high-pressure side circuit breaker 52, 3rd main transformer high-pressure side circuit breaker 53, 4th main transformer high-pressure side circuit breaker 54, first main transformer 61, second main transformer 62, 3rd main transformer 63, 4th main transformer 64, first main transformer low-pressure side circuit breaker 71, second main transformer low-pressure side circuit breaker 72, 3rd main transformer low-pressure side circuit breaker 73, 4th main transformer low-pressure side circuit breaker 74, one 35kV main electrical scheme 81, 2nd 35kV main electrical scheme 82, 3rd 35kV main electrical scheme 83, 4th 35kV main electrical scheme 84, first main electrical scheme section breaker 91, second main electrical scheme section breaker 92 and the 3rd main electrical scheme section breaker 93, a described 110kV bus 31 is connected with supply line of power plant first 11 by the first wire-outgoing breaker 21, and be connected with the first main transformer 11 by the first main transformer high-pressure side circuit breaker 51, described first main transformer 51 is connected with a 35kV main electrical scheme 81 by the first main transformer low-pressure side circuit breaker 61, described 2nd 110kV bus 32 is connected with supply line of power plant second 12 by the second wire-outgoing breaker 22, and be connected with the second main transformer 62 by the second main transformer high-pressure side circuit breaker 52, described second main transformer 62 is connected with the 2nd 35kV main electrical scheme 82 by the second main transformer low-pressure side circuit breaker 72, described 3rd 110kV bus 33 is connected with supply line of 220kV transformer station first 13 by the 3rd wire-outgoing breaker 23, and be connected with the 3rd main transformer 63 by the 3rd main transformer high-pressure side circuit breaker 53, described 3rd main transformer 63 is connected with the 3rd 35kV main electrical scheme 83 by the 3rd main transformer low-pressure side circuit breaker 73, described 4th 110kV bus 34 is connected with supply line of 220kV transformer station second 14 by the 4th wire-outgoing breaker 24, and be connected with the 4th main transformer 64 by the 4th main transformer high-pressure side circuit breaker 54, described 4th main transformer 64 is connected with the 4th 35kV main electrical scheme 84 by the 4th main transformer low-pressure side circuit breaker 74, be connected with between 2nd 110kV bus 32 and the 3rd 110kV bus 33 between first bus section breaker the 41, one 110kV bus 31 and the 4th 110kV bus 34 and be connected with the second bus section breaker 42, the first main electrical scheme section breaker 91 is connected with between one 35kV main electrical scheme 81 and the 2nd 35kV main electrical scheme 82, be connected with between 2nd 35kV main electrical scheme 82 and the 3rd 35kV main electrical scheme 83 between second main electrical scheme section breaker the 92, three 35kV main electrical scheme 83 and the 4th 35kV main electrical scheme 84 and be connected with the 3rd main electrical scheme section breaker 93.
Preferably, the two ends of all circuit breakers described above are all provided with isolating switch.
The utility model is under normal operating mode, and bus section breaker disconnects, and circuit runs in the mode of line change group, and operational mode is reliably clear; When wherein a power circuit breaks down lead-in circuit breaker disconnection, close bus section breaker, can realize subtracting stand-by power supply; When needs power plant is to system conveying electricity volume, only section breaker need be closed a floodgate.
By to 110kV outlet being the two single-trunk segmental wiring mode of transformer station's employing staggered form of 4 times, solve the problem that duplicate supply looped network runs, and by being arranged symmetrically with, include a crossing elimination, thus the problem avoiding transmission line intersection and cause occurs, lays a good foundation for optimizing Transmission Line Design scheme.
Be the feature of the transformer station of 4 times for 110kV outlet, two single-trunk segmental wiring meets the needs of power transformation engineering preferably.Two sectionalized single busbar connection tool there are certain requirements: one be the requirement of transmission line circuit number is 4 times; Two are transformer stations is powered customer substation, and many times Power supplies; Three is that line powering load is comparatively large, and transmission line capability for subsequent use is less, therefore lower to requirement on flexibility; Four is that transformer station is not suitable for the wiring of line change group.Although although the mode of connection is comparatively rare on two sectionalized single busbar connection, under certain engineering specific condition, a kind of flexible, applicable mode of connection of can yet be regarded as, it can solve the existing mode of connection Problems existing of transformer station that 110kV outlet is 4 times effectively.
The above is preferred implementation of the present utility model; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also make some improvements and modifications, these improvements and modifications are also regarded as protection range of the present utility model.

Claims (6)

1. one kind adopts the 110kV transformer station of novel wire connecting way, described 110kV transformer station is arranged between the 220kV transformer station of power plant and access electrical network, and returns back out line circuit by 2 and be connected with power plant, returns back out line circuit be connected with 220kV transformer station by 2, it is characterized in that, comprise the first wire-outgoing breaker, second wire-outgoing breaker, 3rd wire-outgoing breaker, 4th wire-outgoing breaker, one 110kV bus, 2nd 110kV bus, 3rd 110kV bus, 4th 110kV bus, first bus section breaker, second bus section breaker, first main transformer high-pressure side circuit breaker, second main transformer high-pressure side circuit breaker, 3rd main transformer high-pressure side circuit breaker, 4th main transformer high-pressure side circuit breaker, first main transformer, second main transformer, 3rd main transformer, 4th main transformer, first main transformer low-pressure side circuit breaker, second main transformer low-pressure side circuit breaker, 3rd main transformer low-pressure side circuit breaker, 4th main transformer low-pressure side circuit breaker, first main electrical scheme, second main electrical scheme, 3rd main electrical scheme, 4th main electrical scheme, first main electrical scheme section breaker, second main electrical scheme section breaker and the 3rd main electrical scheme section breaker, a described 110kV bus is connected with supply line of power plant first by the first wire-outgoing breaker, and is connected with the first main transformer by the first main transformer high-pressure side circuit breaker, and described first main transformer is connected with the first main electrical scheme by the first main transformer low-pressure side circuit breaker, described 2nd 110kV bus is connected with supply line of power plant second by the second wire-outgoing breaker, and is connected with the second main transformer by the second main transformer high-pressure side circuit breaker, and described second main transformer is connected with the second main electrical scheme by the second main transformer low-pressure side circuit breaker, described 3rd 110kV bus is connected with supply line of 220kV transformer station first by the 3rd wire-outgoing breaker, and be connected with the 3rd main transformer by the 3rd main transformer high-pressure side circuit breaker, described 3rd main transformer is connected with the 3rd main electrical scheme by the 3rd main transformer low-pressure side circuit breaker, described 4th 110kV bus is connected with supply line of 220kV transformer station second by the 4th wire-outgoing breaker, and be connected with the 4th main transformer by the 4th main transformer high-pressure side circuit breaker, described 4th main transformer is connected with the 4th main electrical scheme by the 4th main transformer low-pressure side circuit breaker, be connected with the first bus section breaker between 2nd 110kV bus and the 3rd 110kV bus, between a 110kV bus and the 4th 110kV bus, be connected with the second bus section breaker, the first main electrical scheme section breaker is connected with between first main electrical scheme and the second main electrical scheme, be connected with the second main electrical scheme section breaker between second main electrical scheme and the 3rd main electrical scheme, between the 3rd main electrical scheme and the 4th main electrical scheme, be connected with the 3rd main electrical scheme section breaker.
2. a kind of 110kV transformer station adopting novel wire connecting way according to claim 1, it is characterized in that, the two ends of the first described wire-outgoing breaker, the second wire-outgoing breaker, the 3rd wire-outgoing breaker and the 4th wire-outgoing breaker are respectively arranged with outlet isolating switch.
3. a kind of 110kV transformer station adopting novel wire connecting way according to claim 1, is characterized in that, the first described bus section breaker and the two ends of the second bus section breaker are respectively arranged with sectionalizer.
4. a kind of 110kV transformer station adopting novel wire connecting way according to claim 1, it is characterized in that, the two ends of the first described main electrical scheme section breaker, the second main electrical scheme section breaker and the 3rd main electrical scheme section breaker are respectively arranged with sectionalizer.
5. a kind of 110kV transformer station adopting novel wire connecting way according to claim 1, it is characterized in that, the two ends of the first described main transformer high-pressure side circuit breaker, the second main transformer high-pressure side circuit breaker, the 3rd main transformer high-pressure side circuit breaker and the 4th main transformer high-pressure side circuit breaker are respectively arranged with sectionalizer.
6. a kind of 110kV transformer station adopting novel wire connecting way according to claim 1, it is characterized in that, the two ends of the first described main transformer low-pressure side circuit breaker, the second main transformer low-pressure side circuit breaker, the 3rd main transformer low-pressure side circuit breaker and the 4th main transformer low-pressure side circuit breaker are respectively arranged with sectionalizer.
CN201520176687.4U 2015-03-27 2015-03-27 A kind of 110kV transformer station adopting novel wire connecting way Expired - Fee Related CN204577857U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109038248A (en) * 2018-09-20 2018-12-18 深圳供电规划设计院有限公司 A kind of wiring construction of substation low-voltage side
CN112510706A (en) * 2020-12-04 2021-03-16 深圳供电局有限公司 A close ring circuit with mother for 10kV distribution network
CN116031924A (en) * 2022-12-28 2023-04-28 中国电力工程顾问集团中南电力设计院有限公司 Current transformer station power system wiring and operation method with security section

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109038248A (en) * 2018-09-20 2018-12-18 深圳供电规划设计院有限公司 A kind of wiring construction of substation low-voltage side
CN112510706A (en) * 2020-12-04 2021-03-16 深圳供电局有限公司 A close ring circuit with mother for 10kV distribution network
CN116031924A (en) * 2022-12-28 2023-04-28 中国电力工程顾问集团中南电力设计院有限公司 Current transformer station power system wiring and operation method with security section

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