CN106602544A - Electrical system of transformer substation - Google Patents

Electrical system of transformer substation Download PDF

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Publication number
CN106602544A
CN106602544A CN201510675298.0A CN201510675298A CN106602544A CN 106602544 A CN106602544 A CN 106602544A CN 201510675298 A CN201510675298 A CN 201510675298A CN 106602544 A CN106602544 A CN 106602544A
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CN
China
Prior art keywords
transformer
transformator
type
adopts
electrical system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201510675298.0A
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Chinese (zh)
Inventor
庞莹莹
田进
孙海燕
董献峰
王洋
张伟
徐宁宁
刘汇琦
马海涛
宋本嘉
耿鲁娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electric Co Of Guo Wang Shandong Huantai County
Original Assignee
Electric Co Of Guo Wang Shandong Huantai County
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Electric Co Of Guo Wang Shandong Huantai County filed Critical Electric Co Of Guo Wang Shandong Huantai County
Priority to CN201510675298.0A priority Critical patent/CN106602544A/en
Publication of CN106602544A publication Critical patent/CN106602544A/en
Withdrawn legal-status Critical Current

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Abstract

The invention relates to the technical field of transformer substations, in particular to an electrical system. The electrical system of a transformer substation comprises two transformers, wherein the two transformers are 40MVA on-load voltage regulating transformers and are regulated to be a first transformer of a 110KV voltage class and a second transformer of a 10KV voltage class connected with the first transformer respectively. Two outgoing lines are arranged at the first transformer side which adopts a bridge connection mode. Twenty outgoing lines are arranged at the second transformer side which adopts a sectionalized single-bus connection mode. By adopting the above technical scheme, the electrical system provided by the invention achieves significant advantages of high-efficiency operation and convenient maintenance on the premise that reliability, economical efficiency and flexibility of power supply are ensured.

Description

A kind of transformer station's electrical system
Technical field
The present invention relates to transformer station's technical field, and in particular to a kind of electrical system.
Background technology
With expanding economy, China's power system construction has become a problem for being worth inquiring into, root Become according to the development of the Substation Design of national conditions Lai Kan China of the development and China of transformer station of China Gesture, especially computer techno-stress technology are developed rapidly, and the power transformation technology of power system there has also been new Leap, China's Substation Design occur in that some new trend.
Due to the new development of the network technologies such as computer, the development of transformer station of China achieves significant progress, Transformer station of China is increasingly intended to intellectuality, digitized, assembling, automatization.
Foreign countries began to be protected and controlled the new of complex automatic system from the end of the seventies, the beginning of the eighties Technological development and Test And Research Work.Such as by U.S.'s Westinghouse Electrical Corp. and American Electric Power research institute (EPRI) the SPCS transforming plant protectings of joint research and development and control complex automatic system.Which is mainly characterized in that: System typically adopts layered distribution type, and system controls level by standing and element/bay level is constituted, and most of system exists The communication of control level of standing and element/bay level is connected using star fiber optic, and protective relaying device is transferred on the spot, main Only have optical cable to contact between control room and voltage power distribution equipment at different levels, no heavy-current control cable enters master control Room processed, which saves a large amount of control cables, greatly reduce to computer system in main control room and other The interference of electronic component device, improves operation level and security reliability.
Although transformer station's technology is ripe in terms of some, also in conceptual phase in terms of some, have A little aspects are in the budding stage.The practice of such as intelligent primary equipment presence maintenance, is still within research Stage;Intelligent alarm, analysis decision, optimal control, analysis decision etc., all in conceptual phase;Newly The application on the transformer of type raster pattern temperature is in the budding stage with on-line control system;Intelligent protection Conceptual phase is in distributed coordination Based Intelligent Control.
The content of the invention
It is an object of the present invention to provide a kind of transformer station's electrical system, solves above technical problem.
Technical problem solved by the invention can employ the following technical solutions to realize:
A kind of transformer station's electrical system, including two transformators, two transformators adopt 40MVA ULTC, two transformator difference pressure regulation for 110KV electric pressures the first transformator, Second transformator of the 10KV electric pressures being connected with first transformator;
First transformer side has two to return back out line, and first transformer side adopts Gratz connection mode;
Second transformer side has 20 to return back out line, and second transformer side is connect using sectionalized single busbar connection Line mode.
When the present invention is in 110KV transformer stations, for 110kV sides because it to supply it is more A class, two type loads, therefore its requirement has higher reliability.In order in view of the erosion to main transformer Problem, main transformer do not have extreme high reliability, should not adopt line-transformer-connection mode.From economy Property, reliability, many factors such as motility consider, Gratz connection, with certain reliability and can Autgmentability.In addition, transformer station's power supply of the present invention is concentrated mainly on 10kV, because there is first order load, no Allow interruption maintenance chopper, so need arrange bypass facility, and if 10kV sides connect by double-bus The bad arrangement electrical equipment of line, mainly no suitable relay protection device, therefore the present invention select to adopt Use single-trunk segmental wiring mode.
First transformer side preferably adopts internal bridge connection.In the present invention because the first transformator Only two inlet wires, are one-end substation, and no penetration, simple structure, directly and power supply When being connected, therefore selecting bridge joint wiring, as internal bridge transmission line of electricity is longer, transformator is infrequently thrown Cut, penetration less, so in outer bridging line and internal bridge, selecting internal bridge preferable.
The power distribution equipment of first transformer side adopts outer open type distribution, second transformer side Power distribution equipment adopts withdraw type metal enclosed high-tension switch cabinet.
In the internal bridge of first transformer side, the chopper entered in line side and bridge is preferably adopted SW3-110G type choppers;
First transformator enters the disconnecting switch of the disconnecting switch and outgoing line side of line side and preferably adopts The outdoor antifouling earthing type disconnecting switch of GW4-110DW/1250 types.
Second transformator enters line side chopper preferably using the indoor vacuum type open circuit of ZN21-10/3150 types Device;
Chopper in the second transformator outgoing line side switch cubicle is preferably indoor using ZN21-10/1250 types Vacuum type chopper;
Second transformator enters the disconnecting switch of line side and preferably adopts GN2-10G/3150 type high_voltage isolations Switch;
The disconnecting switch of the second transformator outgoing line side is preferably opened using GN2-10/1000 type high_voltage isolations Close.
The current transformer of the first transformer bus side and the current transformer of outgoing line side are preferably adopted LCW-110 type current transformers;
The voltage transformer of the first transformer bus side preferably adopts JCC-110 type tandem insulation porcelain casees Formula outdoor voltage transformer;
The voltage transformer of the first transformator outgoing line side is preferably adopted(old model For YDR-110) type capacitance type potential transformer.
The second transformer bus side current transformer preferably adopts LBJ-10 column support type current transformers;
The second transformator outgoing line side current transformer, i.e., the current transformer in switch cubicle are preferably adopted With LDJ-10 type current transformers;
The bus bar side voltage transformer and outgoing line side voltage transformer of second transformator is preferably adopted The indoor voltage transformer of JDZJ-10 type resin-cast types.
In the present invention, because 110kV side systems are solidly earthed neutral system, in addition, high-tension molten Disconnected device cost is higher, so 110kV sides do not require the use of fuse, only needs Jing disconnecting switch to be directly grounded.
And the second transformer side, in switch cubicle, fuse type selecting is RN2-10 type high-tension fuses.
Beneficial effect:Due to adopting above-mentioned technical proposal, the present invention ensure power supply reliability, economy, On the premise of motility, operation is realized efficiently, remarkable advantage easy to maintenance.
Description of the drawings
Fig. 1 is electric main wiring diagram of the present invention.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are readily apparent from Solution, is expanded on further the present invention with reference to being specifically illustrating.
A kind of transformer station's electrical system, including two transformators, two transformators have load using 40MVA Adjustable transformer, first transformator and first of two transformator difference pressure regulation for 110KV electric pressures Second transformator of the 10KV electric pressures of transformator connection.The power distribution equipment of the first transformer side is adopted Outer open type distribution, the power distribution equipment of the second transformer side adopt withdraw type metal enclosed high-tension switch cabinet.
With reference to Fig. 1, the first transformer side has two to return back out line, and the first transformer side preferably adopts internal bridge side Formula.In the internal bridge of the first transformer side, the chopper entered in line side and bridge is preferably adopted SW3-110G type choppers.The disconnecting switch that first transformator enters the disconnecting switch and outgoing line side of line side is excellent Choosing is using the outdoor antifouling earthing type disconnecting switch of GW4-110DW/1250 types.First transformer bus side The current transformer of current transformer and outgoing line side preferably adopts LCW-110 type current transformers.First The voltage transformer of transformer bus side is preferably mutual using JCC-110 type tandem insulation porcelain box type outdoor voltages Sensor.The voltage transformer of the first transformator outgoing line side is preferably adopted(old model is YDR-110) type capacitance type potential transformer.In the present invention, because 110kV side systems are that neutral point is direct Earthed system, in addition, high-tension fuse cost is higher, so 110kV sides do not require the use of fuse, Jing disconnecting switch is only needed to be directly grounded.
With reference to Fig. 1, the second transformer side has 20 to return back out line, and the second transformer side is connect using sectionalized single busbar connection Line mode.Second transformator enters line side chopper preferably using the indoor vacuum type open circuit of ZN21-10/3150 types Device.Chopper in second transformator outgoing line side switch cubicle preferably adopts the indoor vacuum of ZN21-10/1250 types Formula chopper.Second transformator enters the disconnecting switch of line side and preferably adopts GN2-10G/3150 type high_voltage isolations Switch.The disconnecting switch of the second transformator outgoing line side preferably adopts GN2-10/1000 type high voltage isolators. Second transformer bus side current transformer preferably adopts LBJ-10 column support type current transformers.Second transformation Device outgoing line side current transformer, i.e., the current transformer in switch cubicle are preferably mutual using LDJ-10 type electric currents Sensor.The bus bar side voltage transformer and outgoing line side voltage transformer of the second transformator is preferably adopted The indoor voltage transformer of JDZJ-10 type resin-cast types.Second transformer side, fuse type selecting in switch cubicle For RN2-10 type high-tension fuses.
When the present invention is in 110KV transformer stations, for 110kV sides because it to supply it is more A class, two type loads, therefore its requirement has higher reliability.In order in view of the erosion to main transformer Problem, main transformer do not have extreme high reliability, should not adopt line-transformer-connection mode.From economy Property, reliability, many factors such as motility consider, Gratz connection, with certain reliability and can Autgmentability.In the present invention because the first transformator only has two inlet wires, it is one-end substation, and does not have When having penetration, simple structure is directly connected with power supply, therefore selecting bridge joint wiring, due to interior bridge Wiring transmission line is longer, transformator infrequently switching, penetration less, so in outer bridging line and In internal bridge, select internal bridge preferable.
In addition, transformer station's power supply of the present invention is concentrated mainly on 10kV, because there is first order load, do not allow Interruption maintenance chopper, so need to arrange bypass facility, and if double bus scheme is pressed not in 10kV sides Electrical equipment is arranged well, mainly no suitable relay protection device, therefore present invention selection is using single The bus section mode of connection.
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.One's own profession The technical staff of industry it should be appreciated that the present invention is not restricted to the described embodiments, above-described embodiment and explanation Merely illustrating the principles of the invention described in book, 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 both fall within claimed invention model In enclosing.The claimed scope of the invention is by appending claims and its equivalent thereof.

Claims (8)

1. a kind of transformer station's electrical system, including two transformators, it is characterised in that two transformations Device adopts 40MVA ULTCs, and two transformator difference pressure regulation are 110KV voltages Second transformator of the 10KV electric pressures of the first transformator of grade and first transformator connection;
First transformer side has two to return back out line, and first transformer side adopts Gratz connection mode;
Second transformer side has 20 to return back out line, and second transformer side is connect using sectionalized single busbar connection Line mode.
2. a kind of transformer station's electrical system according to claim 1, it is characterised in that described first Transformer side adopts internal bridge connection.
3. a kind of transformer station's electrical system according to claim 2, it is characterised in that described first The power distribution equipment of transformer side adopts the power distribution equipment of outer open type distribution, second transformer side to adopt Withdraw type metal enclosed high-tension switch cabinet.
4. a kind of transformer station's electrical system according to claim 3, it is characterised in that described first In the internal bridge of transformer side, the chopper entered in line side and bridge adopts SW3-110G type choppers;
First transformator enters the disconnecting switch of the disconnecting switch and outgoing line side of line side and adopts The outdoor antifouling earthing type disconnecting switch of GW4-110DW/1250 types.
5. a kind of transformer station's electrical system according to claim 3, it is characterised in that described second Transformator enters line side chopper using the indoor vacuum type chopper of ZN21-10/3150 types;
Chopper in the second transformator outgoing line side switch cubicle adopts the indoor vacuum of ZN21-10/1250 types Formula chopper;
Second transformator enters the disconnecting switch of line side and adopts GN2-10G/3150 type high voltage isolators;
The disconnecting switch of the second transformator outgoing line side adopts GN2-10/1000 type high voltage isolators.
6. a kind of transformer station's electrical system according to claim 4, it is characterised in that described first The current transformer of the current transformer and outgoing line side of transformer bus side is mutual using LCW-110 type electric currents Sensor;
The voltage transformer of the first transformer bus side adopts the box family of JCC-110 type tandem insulation porcelains External voltage transformer;
The voltage transformer of the first transformator outgoing line side is adoptedType capacitor voltage Transformer.
7. a kind of transformer station's electrical system according to claim 5, it is characterised in that described second Transformer bus side current transformer adopts LBJ-10 column support type current transformers;
The second transformator outgoing line side current transformer, i.e., the current transformer in switch cubicle are adopted LDJ-10 type current transformers;
The bus bar side voltage transformer and outgoing line side voltage transformer of second transformator is adopted The indoor voltage transformer of JDZJ-10 type resin-cast types.
8. a kind of transformer station's electrical system according to claim 7, it is characterised in that the second transformation Device side, in switch cubicle, fuse type selecting is RN2-10 type high-tension fuses.
CN201510675298.0A 2015-10-16 2015-10-16 Electrical system of transformer substation Withdrawn CN106602544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510675298.0A CN106602544A (en) 2015-10-16 2015-10-16 Electrical system of transformer substation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510675298.0A CN106602544A (en) 2015-10-16 2015-10-16 Electrical system of transformer substation

Publications (1)

Publication Number Publication Date
CN106602544A true CN106602544A (en) 2017-04-26

Family

ID=58554205

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510675298.0A Withdrawn CN106602544A (en) 2015-10-16 2015-10-16 Electrical system of transformer substation

Country Status (1)

Country Link
CN (1) CN106602544A (en)

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Application publication date: 20170426

WW01 Invention patent application withdrawn after publication