CN102394552B - Grounding switch position structure at valve sides of three-winding converter transformer and quadruple valve converter transformer - Google Patents
Grounding switch position structure at valve sides of three-winding converter transformer and quadruple valve converter transformer Download PDFInfo
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- CN102394552B CN102394552B CN201110354731.2A CN201110354731A CN102394552B CN 102394552 B CN102394552 B CN 102394552B CN 201110354731 A CN201110354731 A CN 201110354731A CN 102394552 B CN102394552 B CN 102394552B
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Abstract
The invention provides a grounding switch position structure at valve sides of a three-winding converter transformer and a quadruple valve converter transformer, which comprises head ends of windings at valve sides of three three-winding converter transformers a1, a2, b1, b2, c1 and c2, tail ends of the windings at the valve sides of the three three-winding converter transformers x1, x2, y1, y2, z1 and z2, grounding switches a11, b11, c11, x22, y22 and z22, a fireproofing wall and a sleeve, wherein all the grounding switches are arranged on the fireproofing wall, and the head ends of the windings a1, b1 and c1 are respectively and correspondingly connected with the grounding switches a11, b11 and c11, and the tail ends of the windings x2, y2 and z2 are respectively and correspondingly connected with the grounding switches x22, y22 and z22. With the grounding switch position structure, the shorter distance between each grounding switch and a corresponding winding terminal can be realized, the switch arm length of the grounding switches is smaller, and all the grounding switches have no mutual noninterference on valve opening and closing operations.
Description
Technical field
The invention belongs to high-voltage dc transmission electrical domain, relate to the ground cutter position structure of a kind of three winding change of current changes and quadruple valve valve Room converter transformer valve side.
Background technology
In high voltage direct current transmission project, conventionally at the valve side winding head end configuration ground of converter transformer (becoming hereinafter to be referred as the change of current) cutter.The collocation point of these ground cuttves is all bearing certain alternating voltage and higher direct voltage.Different from alternating voltage, there is not zero crossing in direct voltage.Therefore,, in the time that equipment is stopped transport, the stray capacitance between device interior and equipment and ground must residual suitable electric charge.The effect of converter transformer valve side ground cutter is that the electric charge that the stray capacitance between device interior and equipment and ground is stored imports the earth, to ensure operations staff's personal safety in the time that corresponding 12 flutter valve group relevant devices are stopped transport maintenance.
Compared with adopting double winding change of current change-double valve, adopt three winding change of current change-quadruple valves greatly to reduce investment outlay.Therefore,, under the condition of transport and the permission of creating conditions, adopt the layout of three winding change of current change-quadruple valves more.Corresponding 12 pulsating elements, need three three winding changes of current to become.Every change of current becomes two valve side windings, and each winding stretches out head end and end sleeve pipe in the valve Room, as shown in Figure 1.In order to coordinate the wiring of three winding change of current changes and suspension type quadruple valve, three three winding changes of current become six terminals of downside and connect composition Yy wiring; Six terminals of upside connect composition Yd wiring.For this reason, two valve side windings that the three winding changes of current become are also conventionally referred to as Yy side winding and Yd side winding.Conventionally the Yy, becoming every three winding changes of current and the head end of Yd side winding all need configuration ground cutter.
For the valve Room that adopts three winding change of current change-quadruple valves, three winding converter transformer valve side ground cutter arrangement space are limited.First, such valve Room is arranged conventionally compact, and the reason of arranging due to ground cutter artificially lengthens conventionally infeasible by the valve Room.In addition, while normally operation, ground cutter is in earth potential, and there is alternating voltage three winding converter transformer sleeve ends and compared with the synergy of High Level DC Voltage, and the ground cutter of gate-dividing state need to keep certain air clearance with three winding converter transformer sleeve ends.Moreover the valve tower of quadruple valve is conventionally longer, the valve Room is higher.In order to meet Stability Analysis of Structures requirement, the steel column (being commonly called as Special-Shaped Column) of structure need to give prominence to fire compartment wall with give valve Room steel structure stull headspace, as shown in Figure 1.And Special-Shaped Column part is difficult to arrange ground cutter conventionally.
Meanwhile, the profile feature of three winding converter transformer valve side sleeves makes ground cutter arrange more difficult.Three winding changes of current change Yy and Yd side sleeve pipe are mostly splayed and diverge to, as shown in Figure 1.Arrange ground cutter if the fire compartment wall top between Yy and Yd side winding head end and the sleeve pipe of end is divided, not only in insufficient space but also ground cutter making process, may break sleeve pipe.If the side outside three winding converter transformer valve side winding two head ends is arranged ground cutter, as shown in Figure 1, in Yd side ground cutter making process, may encounter Yy side ground cutter; In addition, the ground cutter tool arm that is arranged in distally is artificially lengthened, and makes the bad stability of ground cutter.If by the change of current become Yy, Yd side winding head end is drawn by post insulator, and ground cutter fixed contact is arranged on post insulator; Can make valve chief degree increase more, and the valve chief degree important sources that current conversion station floor space is optimized often.
Summary of the invention
The object of the invention is to, solve three winding change of current change-quadruple valve valve Room converter transformer valve side positions little, the problem of ground cutter security arrangements difficulty.
For achieving the above object, the invention provides the ground cutter position structure of a kind of three winding change of current changes and quadruple valve valve Room converter transformer valve side, comprise the head end a1 of three three winding converter transformer valve side windings, a2, b1, b2, c1 and c2, the end x1 of three winding converter transformer valve side windings, x2, y1, y2, z1 and z2, fire compartment wall, sleeve pipe, ground cutter a11, b11, c11, x22, y22 and z22, cutter is all arranged on fire compartment wall fully, three winding converter transformer valve side winding head end a1, b1 and c1 have been connected respectively ground cutter a11 separately, b11 and c11, three winding converter transformer valve side winding end x2, y2 and z2 have been connected respectively ground cutter x22 separately, y22 and z22.
Ground cutter a11 and x22, cutter b11 and y22, cutter c11 and z22 be arranged in the both sides that three three winding changes of current become.
Ground cutter a11, cutter b11, cutter c11, cutter x22, cutter y22 and ground cutter z22 keep respectively three winding converter transformer valve side Yy side phase-ground, the neutral point-earth air clearance of three winding converter transformer valve side Yy sides with adjacent Yy side winding head end and end cannula tip respectively, keep the air clearance on three winding converter transformer valve side Yd side phase-ground with adjacent Yd side winding casing tube end.
The ground cutter of three winding converter transformer valve side winding head end a2, b2 and c2 is configured to the adjacent change of current being connected with this terminal and becomes winding end y2, z2 and x2 place, become both sides thereby make 6 of 12 pulsating element converter transformer valve sides that ground cutter is all configured in to 3 three winding changes of current.Like this, the tool arm length that all three winding changes of current become ground cutter is less, and the breaking-closing operating of all ground cutter is all non-interference.
The invention has the beneficial effects as follows and under the prerequisite that does not increase valve Room size, realized that the tool arm length of all three winding converter transformer valve sides ground cuttves is less and breaking-closing operating is all non-interference.
Brief description of the drawings
Fig. 1 is that in prior art, three three winding changes of current become and the axis side view of ground cutter visual location structure.
Fig. 2 is that the 12 pulse conversion unit changes of current become connection group schematic diagram.
Fig. 3 is the axis side view that three three winding changes of current changes of the present invention and ground cutter thereof improve positional structure.
Fig. 4 is that the air clearance of the each terminal of the present invention's three winding converter transformer valve side winding requires figure.
Symbol in figure represents respectively:
The head end of a1, a2, b1, b2, c1, tri-three winding converter transformer valve side windings of c2-;
The end of x1, x2, y1, y2, z1, tri-three winding converter transformer valve side windings of z2-;
A11, b11, c11, a22, b22, c22, x22, y22, z22-ground cutter;
A, B, the C-tri-winding changes of current become the head end of net side winding one phase;
1-fire compartment wall; 2-Special-Shaped Column; 3-sleeve pipe.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment as shown in Figure 2, Figure 3 and Figure 4, the present embodiment provides the ground cutter position structure of a kind of three winding change of current changes and quadruple valve valve Room converter transformer valve side, comprise head end a1, a2, b1, b2, c1 and the c2 of three three winding converter transformer valve side windings, end x1, x2, y1, y2, z1 and the z2 of three winding converter transformer valve side windings, fire compartment wall 1, sleeve pipe 3, ground cutter a11, b11, c11, x22, y22 and z22.Cutter is all arranged on fire compartment wall 1 fully, and head end a1, b1 and c1 have been connected respectively ground cutter a11, b11 and c11 separately, and winding end x2, y2 and z2 have been connected respectively ground cutter x22, y22 and z22 separately.
Ground cutter a11, b11, c11, x22, y22 and z22 are arranged in the both sides that three three winding changes of current become, cutter a11 and x22, cutter b11 and y22, cutter c11 and z22 be arranged in the both sides that three three winding changes of current become.
Cutter and sleeve pipe keep air clearance fully.
Three three winding changes of current changes that the present embodiment 12 pulse conversion units are corresponding are connected into Yy and Yd wiring, and a2, b2, c2 are the head end of three winding converter transformer valve side Yd side windings; X2, y2, z2 are the end of three winding converter transformer valve side Yd side windings; As shown in Figure 2.Obviously the head end c2 that head end b2, the change of current of C phase that, the head end a2 of A phase change of current change Yd side winding, the change of current of B phase become Yd side winding becomes Yd side winding becomes Yd side end y2 with the change of current of B phase respectively, the change of current of C phase becomes the end z2 of Yd side winding, the end x2 of A phase change of current change Yd side winding and is connected.Therefore, as A, B in Fig. 1, the change of current of C phase become Yd side winding head end a2, b2, c2 cutter a22, b22, c22 can be configured to respectively B, C, the change of current of A phase and become end y2, z2, the x2 place of Yd side winding, replace with cutter y22, z22 and x22, as shown in Figure 3.Like this, six ground cutter is arranged in to the both sides that three three winding changes of current become.
With B, mutually the head end b1 of three winding converter transformer valve side windings and the ground cutter b11 of b2 and the example that is configured to of z22 describe below.The end voltage equalizing ball that becomes b1, b2 and x1, x2 sleeve pipe 3 taking the three winding changes of current sentences three winding converter transformer valve side winding head ends shown in Fig. 4 and air clearance corresponding to end requires to make ball as radius.Outside ball and fire compartment wall 1 intersection and Special-Shaped Column 2 and near b1 terminal place, the selectively position of cutter b11.Outside ball and fire compartment wall 1 intersection and Special-Shaped Column 2 and near z2 terminal place, the selectively position of cutter z22.
The beneficial effect of the present embodiment is not increase under the prerequisite of valve Room size, to have realized that the tool arm length of all converter transformer valve sides ground cutter is less and breaking-closing operating is all non-interference.
Claims (3)
1. the ground cutter position structure of a winding change of current change and quadruple valve valve Room converter transformer valve side, comprise the head end a1 of three three winding converter transformer valve side windings, a2, b1, b2, c1 and c2, the end x1 of three winding converter transformer valve side windings, x2, y1, y2, z1 and z2, ground cutter a11, b11, c11, x22, y22 and z22, fire compartment wall, sleeve pipe, it is characterized in that: cutter is all arranged on fire compartment wall fully, three winding converter transformer valve side winding head end a1, b1 and c1 have been connected respectively ground cutter a11 separately, b11 and c11, by three winding converter transformer valve side winding head end a2, the ground cutter of b2 and c2 is configured to and this head end a2, the adjacent change of current that b2 is connected with c2 becomes winding end y2, z2 and x2 place, three winding converter transformer valve side winding end x2, y2 and z2 have been connected respectively ground cutter x22 separately, y22 and z22.
2. the ground cutter position structure of three winding change of current changes according to claim 1 and quadruple valve valve Room converter transformer valve side, is characterized in that: ground cutter a11 and x22, cutter b11 and y22, cutter c11 and z22 be arranged in the both sides that three three winding changes of current become.
3. the ground cutter position structure of three winding change of current changes according to claim 1 and 2 and quadruple valve valve Room converter transformer valve side, it is characterized in that: ground cutter a11, cutter b11, cutter c11, cutter x22, cutter y22 and ground cutter z22 keep respectively three winding converter transformer valve side Yy side phase-ground, the neutral point-earth air clearance of three winding converter transformer valve side Yy sides with adjacent Yy side winding head end and end cannula tip respectively, keep the air clearance on three winding converter transformer valve side Yd side phase-ground with adjacent Yd side winding casing tube end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354731.2A CN102394552B (en) | 2011-11-10 | 2011-11-10 | Grounding switch position structure at valve sides of three-winding converter transformer and quadruple valve converter transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110354731.2A CN102394552B (en) | 2011-11-10 | 2011-11-10 | Grounding switch position structure at valve sides of three-winding converter transformer and quadruple valve converter transformer |
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| CN102394552A CN102394552A (en) | 2012-03-28 |
| CN102394552B true CN102394552B (en) | 2014-06-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127641A (en) * | 1996-08-13 | 2000-10-03 | Siemens Aktiengesellschaft | High-voltage switchgear |
| CN1848650A (en) * | 2006-03-22 | 2006-10-18 | 国家电网公司 | Method for DC transmission engineering intra-valve hall converter transformer wiring method |
| CN101540491A (en) * | 2009-03-06 | 2009-09-23 | 南方电网技术研究中心 | Setting method of DC de-icing major loop |
| CN101615765A (en) * | 2009-03-18 | 2009-12-30 | 国网直流工程建设有限公司 | A kind of novel high-pressure wall bushing earthing method and equipment |
| CN201682248U (en) * | 2010-05-13 | 2010-12-22 | 湖南省电力公司试验研究院 | Electric transmission line DC ice melting device based on twelve-pulse uncontrolled rectifying |
| CN202363910U (en) * | 2011-11-10 | 2012-08-01 | 北京网联直流工程技术有限公司 | Grounding knife-switch position structure on valve sides of converting transformers in valve hall of three-winding converting transformer-quadruple valve |
-
2011
- 2011-11-10 CN CN201110354731.2A patent/CN102394552B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127641A (en) * | 1996-08-13 | 2000-10-03 | Siemens Aktiengesellschaft | High-voltage switchgear |
| CN1848650A (en) * | 2006-03-22 | 2006-10-18 | 国家电网公司 | Method for DC transmission engineering intra-valve hall converter transformer wiring method |
| CN101540491A (en) * | 2009-03-06 | 2009-09-23 | 南方电网技术研究中心 | Setting method of DC de-icing major loop |
| CN101615765A (en) * | 2009-03-18 | 2009-12-30 | 国网直流工程建设有限公司 | A kind of novel high-pressure wall bushing earthing method and equipment |
| CN201682248U (en) * | 2010-05-13 | 2010-12-22 | 湖南省电力公司试验研究院 | Electric transmission line DC ice melting device based on twelve-pulse uncontrolled rectifying |
| CN202363910U (en) * | 2011-11-10 | 2012-08-01 | 北京网联直流工程技术有限公司 | Grounding knife-switch position structure on valve sides of converting transformers in valve hall of three-winding converting transformer-quadruple valve |
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| CN102394552A (en) | 2012-03-28 |
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Owner name: BEIJING WANGLIAN HVDC ENGINEERING TECHNOLOGY CO., Free format text: FORMER OWNER: NANJING CURCUIT APPLIANCE FACTORY Effective date: 20140303 Owner name: STATE POWER ECONOMIC RESEARCH INSTITUTE Free format text: FORMER OWNER: BEIJING WANGLIAN HVDC ENGINEERING TECHNOLOGY CO., LTD. Effective date: 20140303 |
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Effective date of registration: 20140303 Address after: 100052 No. 8 South East Street, Beijing, Xicheng District Applicant after: State Power Economic Research Institute Applicant after: Beijing Wanglian HVDC Engineering Technology Co., Ltd. Applicant after: Nanjing Line Accessories Manufacturer Address before: 100052, room 8, capital building, 616 South Cross Street, Beijing, Xicheng District Applicant before: Beijing Wanglian HVDC Engineering Technology Co., Ltd. Applicant before: Nanjing Curcuit Appliance Factory |
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