CN102226972B - Two-column serial wiring structure of network-side coils for converter transformer - Google Patents
Two-column serial wiring structure of network-side coils for converter transformer Download PDFInfo
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- CN102226972B CN102226972B CN2011100802367A CN201110080236A CN102226972B CN 102226972 B CN102226972 B CN 102226972B CN 2011100802367 A CN2011100802367 A CN 2011100802367A CN 201110080236 A CN201110080236 A CN 201110080236A CN 102226972 B CN102226972 B CN 102226972B
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Abstract
The invention provides a two-column serial wiring structure of network-side coils for a converter transformer, comprising two-column iron cores in an oil tank of a transformer; a pressure-regulating coil, a network-side coil and a valve-side coil are arranged outside of each column of iron core; after the two network-side coils are connected in series, one end of the serial coils is connected with a power grid and the other end of the serial coils is connected to a network-side neutral point by the two pressure-regulating coils in parallel connection; the two valve-side coils are connected in parallel and then connected to a valve-side terminal; an outgoing line device is connected between the power grid and the two network-side coils. Only one 750kV outgoing line device is used at the network side, and the voltage of the network-side coil at the other column is halved of a rated voltage, thus simplifying the structure of the converter transformer; the outgoing line voltage level is determined by the complexity of an insulating structure of the outgoing line device at the network side, so a high-voltage outgoing line device at the network side of one column is not used, thus reducing the cost and being simple in the overall wiring structure. With the increment of the network-side voltage, the advantages of the wiring structure are more outstanding.
Description
Technical field
The invention belongs to the converter transformer technical field, particularly voltage on line side is become the wiring construction with the series connection of net lateral coil two posts for the change of current ultra, ultra high voltage.
Background technology
Along with the continuous development of China's power industry, the increase of the big trans-regional remote DC power transmission line of capacity is had higher requirement to the transmission line capability and the transmission distance of DC power transmission line.Domestic existing converter transformer voltage on line side is up to 500kV; Voltage on valve side is up to ± 800kV; But along with the increase of transmission line capability and transmission distance, the transmission of electricity economy under the existing voltage will significantly reduce, and the electric pressure that needs to improve net side and valve side is to improve the economy of direct current transportation; Like voltage on line side is 750kV, and voltage on valve side is ± 1100kV.
See also shown in Figure 1ly, original converter transformer net lateral coil (500kV level) adopts the mode of connection of two posts parallel connection, and net side head end outlet insulation system is complicated; After the electric pressure (750kV level) that improves the net lateral coil, if the net side continues to adopt the mode of connection (see figure 2) of two posts parallel connection, it is just complicated more then to net side head end outlet insulation system, and simultaneously, the cost of making two cover net side outgoing line devices is also very high.
In view of above problem, the wiring construction that reality is necessary to provide a kind of change of current to become connects with net lateral coil two posts is with manufacturing cost that reduces change of current change and the structure of simplifying change of current change.
Summary of the invention
The invention provides a kind of change of current and become the wiring construction with the series connection of net lateral coil two posts, its coil two posts adopt the mode of series connection, only need make a cover net side outlet structure, have reduced cost of manufacture, simplify the structure.
The technical scheme that the present invention adopted is: a kind of change of current becomes the wiring construction with the series connection of net lateral coil two posts; Comprise that two posts that are arranged in the oil tank of transformer are unshakable in one's determination; Every post arranged outside unshakable in one's determination has a voltage regulation coil, a net lateral coil, a valve lateral coil; After the series connection of said two net lateral coils, one is connected to electrical network, and the other end is connected to net side neutral point through the voltage regulation coil of two parallel connections; Be connected to the valve side terminal after the parallel connection of said two valve lateral coils, said electrical network and net lateral coil high pressure are connected with outgoing line device between lifting one's head.
The wiring construction that the change of current of the present invention becomes with the series connection of net lateral coil two posts has the following advantages at least: the net lateral coil in the every post iron core of the present invention outside adopts series system; Like this; Electrical network only need be connected with a net lateral coil, also just only needs an outgoing line device, like this; Save an outgoing line device, reduced cost; In addition, because the complexity of net side outgoing line device insulation system depends on the voltage levvl of outlet, therefore, the present invention can save a post net side high-voltage terminal device, not only reduces cost, and makes whole wiring construction very simple.Along with the raising of voltage on line side, advantage of the present invention is more outstanding.
Description of drawings
Fig. 1 is the wiring construction figure that original converter transformer net lateral coil (500kV level) is adopted;
Fig. 2 is the wiring construction figure that original converter transformer net lateral coil (750kV level) is adopted;
Fig. 3 is that the change of current of the present invention becomes the wiring construction with the series connection of net lateral coil two posts.
Embodiment
See also shown in Figure 3; The wiring construction that the change of current of the present invention becomes with the series connection of net lateral coil two posts comprises that two posts that are arranged in the oil tank of transformer are unshakable in one's determination; Every post arranged outside unshakable in one's determination has a voltage regulation coil, a net lateral coil, a valve lateral coil; After the series connection of said two net lateral coils, one is connected to electrical network, and the other end is connected to net side neutral point through the voltage regulation coil of two parallel connections; Be connected to the valve side terminal after the parallel connection of said two valve lateral coils, said electrical network and net lateral coil high pressure are connected with outgoing line device between lifting one's head.
Said voltage regulation coil forms net side joint line circuit with the net lateral coil, and said a pair of valve lateral coil forms the valve side line circuit.
The output of the HV Terminal A of said net side joint line circuit is connected with the first net lateral coil and the second net lateral coil of mutual series connection in turn through outgoing line device; The output of the said second net lateral coil is connected with first voltage regulation coil and second voltage regulation coil that connects with parallel way, and the output of said first voltage regulation coil and second voltage regulation coil is connected on the neutral terminal X of net side joint line circuit.
Said valve side line circuit comprises the first and second valve lateral coils parallel with one another, and two valve side terminals of valve lateral circuit are connected to the two ends of the first and second valve lateral coils of parallel connection.
Only with 1 cover 750kV outgoing line device, another post net lateral coil voltage is reduced to the half the of former rated voltage to net side of the present invention, has simplified the insulation system at change of current change device body end and outlet position.
In the present invention, the output of the HV Terminal A of said net side joint line circuit only links to each other with the first net lateral coil, compares with traditional net side joint line circuit, and wiring circuit of the present invention has been saved an outgoing line device.
In addition, because the complexity of net side outgoing line device insulation system depends on the voltage levvl of outlet, therefore, the present invention can save a post net side high-voltage terminal device, not only reduces cost, and makes whole wiring construction very simple.Along with the raising of voltage on line side, advantage of the present invention is more outstanding.
The above is merely one embodiment of the present invention; It or not whole or unique execution mode; The conversion of any equivalence that those of ordinary skills take technical scheme of the present invention through reading specification of the present invention is claim of the present invention and contains.
Claims (1)
1. a change of current becomes the wiring construction with the series connection of net lateral coil two posts; It is characterized in that: comprise that two posts that are arranged in the oil tank of transformer are unshakable in one's determination; Every post arranged outside unshakable in one's determination has a voltage regulation coil, a net lateral coil, a valve lateral coil; After the series connection of said two net lateral coils, one is connected to electrical network, and the other end is connected to net side neutral point through the voltage regulation coil of two parallel connections; Be connected to the valve side terminal after the parallel connection of said two valve lateral coils, said electrical network and net lateral coil high pressure are connected with outgoing line device between lifting one's head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100802367A CN102226972B (en) | 2011-03-31 | 2011-03-31 | Two-column serial wiring structure of network-side coils for converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100802367A CN102226972B (en) | 2011-03-31 | 2011-03-31 | Two-column serial wiring structure of network-side coils for converter transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102226972A CN102226972A (en) | 2011-10-26 |
| CN102226972B true CN102226972B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100802367A Active CN102226972B (en) | 2011-03-31 | 2011-03-31 | Two-column serial wiring structure of network-side coils for converter transformer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110288883B (en) * | 2019-05-10 | 2021-06-01 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Converter transformer fault simulation platform and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2914278Y (en) * | 2006-06-27 | 2007-06-20 | 西安西电变压器有限责任公司 | Single-phase auto-powerstat |
| CN101145440A (en) * | 2006-09-14 | 2008-03-19 | 特变电工股份有限公司 | V-shaped wiring transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4482765B2 (en) * | 2005-09-30 | 2010-06-16 | Ｔｄｋ株式会社 | Switching power supply |
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2011
- 2011-03-31 CN CN2011100802367A patent/CN102226972B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2914278Y (en) * | 2006-06-27 | 2007-06-20 | 西安西电变压器有限责任公司 | Single-phase auto-powerstat |
| CN101145440A (en) * | 2006-09-14 | 2008-03-19 | 特变电工股份有限公司 | V-shaped wiring transformer |
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| CN102226972A (en) | 2011-10-26 |
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Application publication date: 20111026 Assignee: Xi'an XD Transformer Co., Ltd. Assignor: China XD Electronic Corporation Contract record no.: 2013610000064 Denomination of invention: Two-column serial wiring structure of network-side coils for converter transformer Granted publication date: 20120822 License type: Exclusive License Record date: 20130624 |
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