CN215221748U - Offshore flexible direct current converter station direct current field suitable for multi-terminal interconnection - Google Patents
Offshore flexible direct current converter station direct current field suitable for multi-terminal interconnection Download PDFInfo
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- CN215221748U CN215221748U CN202120899578.0U CN202120899578U CN215221748U CN 215221748 U CN215221748 U CN 215221748U CN 202120899578 U CN202120899578 U CN 202120899578U CN 215221748 U CN215221748 U CN 215221748U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides an offshore flexible direct current converter station direct current field suitable for multiterminal interconnection, offshore flexible direct current converter station direct current field is by first layer direct current field and pile up the double-deck direct current field that constitutes in the second floor direct current field at first layer direct current field top, first layer direct current field contains the first platform that is located the intermediate position and symmetrical arrangement in two polar line direct current fields of first platform width direction both sides, second floor direct current field contains the second platform that is located the intermediate position and symmetrical arrangement in two neutral line direct current fields of second platform width direction both sides, each polar line direct current field and neutral line direct current field all contain the inlet wire return circuit, direct current generating line and a plurality of feeder return circuit. The utility model discloses the advantage lies in multi-end interconnection and high expansibility, compares with the both ends system, and a plurality of convertor station interconnections can be realized in the marine flexible direct current convertor station direct current field of multi-end interconnection, and many mains operated and many placement receive the power, have higher economic nature, flexibility and reliability, and application prospect is wide.
Description
Technical Field
The utility model relates to an offshore wind power and flexible direct current transmission technical field, concretely relates to marine flexible direct current converter station direct current field suitable for multi-terminal interconnection.
Background
In recent years, with the urgent requirements of traditional energy shortage and carbon emission reduction, the development and utilization of global offshore wind energy are rapidly developed, and offshore wind energy has huge wind energy resources and wide sea area resources, so that deep and far-sea wind power becomes an important direction for offshore wind power development in the future. At present, the grid-connected mode of wind power transmission at deep sea is mainly divided into two main types of high-voltage alternating current transmission and high-voltage direct current transmission, wherein the high-voltage direct current transmission adopts a flexible direct current mode. For a long-distance deep offshore wind power project, the high-voltage alternating-current power transmission has too many limiting factors due to the consideration of the reactive compensation problem of the line. The adoption of the long-distance high-voltage flexible direct current transmission has the advantages of controllable tidal current and voltage, large transmission capacity, capability of providing reactive support for a system and the like in the process of offshore wind power transmission.
At present, offshore wind power flexible direct current transmission only adopts a two-end interconnection transmission technology, the flexibility is poor, if a traditional two-end direct current transmission system is adopted to realize interconnection among a plurality of power grids, a plurality of direct current transmission lines are needed, the cost and the operating cost are very high, multi-end flexible direct current transmission is developed on the basis of two-end direct current transmission and has direct current transmission with more than 3 convertor stations, the flexibility is stronger, the control characteristic is more excellent, the economy is better, and therefore, the application prospect in the field of large-scale delivery of renewable energy is better.
Based on the circumstances, the utility model provides a marine flexible direct current converter station direct current field suitable for multi-end interconnection can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists among the prior art, the utility model aims to provide a marine flexible direct current converter station direct current field suitable for multi-end interconnection arranges for the double-deck four direct current fields of single platform, and each direct current field contains inlet wire return circuit, direct current generating line and a plurality of feeder return circuit. The utility model is suitable for a flexible direct current of marine wind power of multiterminal interconnected converter station sees off system, and its novel advantage of usefulness lies in multiterminal interconnection and high expansibility, compares with the both ends system, and a plurality of converter station interconnections can be realized in the marine flexible direct current converter station direct current field of multiterminal interconnection, and many mains operated and many placement receive the electricity, have higher economic nature, flexibility and reliability, and application prospect is wide.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
the offshore flexible direct current converter station direct current field is a double-layer direct current field formed by a first layer of direct current field and a second layer of direct current field stacked on the top of the first layer of direct current field, the first layer of direct current field comprises a first platform located in the middle and two polar line direct current fields symmetrically arranged on two sides of the first platform in the width direction, the second layer of direct current field comprises a second platform located in the middle and two neutral line direct current fields symmetrically arranged on two sides of the second platform in the width direction, and each polar line direct current field and each neutral line direct current field respectively comprise a line incoming loop, a direct current bus and a plurality of feeder loops.
As an optimal technical scheme of the utility model, the inlet wire return circuit in arbitrary polar line direct current field contains wall bushing, bridge arm reactor, post insulator and dual grounding isolator, and the direct current generating line in this polar line direct current field contains the pipe mother and suspends the insulator in midair, and the feeder circuit in this polar line direct current field contains single grounding isolator, high speed switch, earthing switch and polar line cable terminal.
As an optimal technical scheme of the utility model, the inlet wire return circuit and the feeder return circuit in polar line direct current field all contain the measurement protection equipment.
As a preferred technical solution of the present invention, in the incoming line loop of the polar line dc field, one side of the bridge arm reactor is connected to the wall bushing, the other side is connected to the measurement protection device, the other side of the measurement protection device is connected to the double-grounded isolation switch, and the other side of the double-grounded isolation switch is electrically connected to the dc bus; in a feeder line loop, one side of a single grounding isolating switch is electrically connected with a direct current bus, the other side of the single grounding isolating switch is electrically connected with one side of a high-speed switch HSS, and the other side of the high-speed switch HSS is matched with a measurement protection device and a grounding switch and is finally electrically connected with an electrode wire cable terminal.
As an optimized technical scheme of the utility model, the direct current generating line in polar line direct current field is hung the installation by hanging in midair the insulator and is carried out the pipe mother.
As an optimal technical scheme of the utility model, the inlet wire return circuit in arbitrary neutral line direct current field contains wall bushing, bridge arm reactor, post insulator, two/single earthing isolator, and the direct current generating line in this neutral line direct current field contains the pipe mother and suspends the insulator in midair, and the feeder circuit in this neutral line direct current field contains single earthing isolator, high speed switch HSS, earthing switch and neutral line cable terminal.
As an optimal technical scheme of the utility model, the inlet wire return circuit and the feeder return circuit in neutral line direct current field all contain and measure protective apparatus.
As a preferred technical solution of the present invention, in the incoming line loop of the neutral line dc field, one side of the bridge arm reactor is connected to the wall bushing, the other side is electrically connected to the measurement protection device, the other side of the measurement protection device is connected to the dual/single grounding isolation switch, and the other side of the dual/single grounding isolation switch is electrically connected to the dc bus; in a feeder circuit, one side of a single grounding isolating switch is electrically connected with a direct current bus, the other side of the single grounding isolating switch is electrically connected with one side of a high-speed switch HSS, and the other side of the high-speed switch HSS is matched with a measurement protection device and a grounding switch and is finally electrically connected with a neutral cable terminal.
As an optimized technical scheme of the utility model, the direct current generating line in neutral line direct current field is by hanging in midair the insulator and carrying out the female installation that hangs of pipe.
As a preferred technical scheme of the utility model, measure two kinds at least in protection equipment includes direct current measuring device, direct voltage measuring device and the arrester.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model provides a marine flexible direct current converter station direct current field suitable for multi-end interconnection for the first time, its practical novel advantage lies in multi-end interconnection and high expansibility, compares with the both ends system, and a plurality of converter station interconnections can be realized in marine flexible direct current converter station direct current field of multi-end interconnection, and many power supplies and many placement receive the electricity, have higher economic nature, flexibility and reliability, and application prospect is wide.
The offshore foundation construction difficulty is high, the manufacturing cost is high, the requirement on small occupied area of the offshore converter station is met, and the overall weight is light, so that compared with the laying arrangement of the onshore multi-end converter station, the offshore multi-end converter station is arranged in multiple layers, the equipment types are reduced through optimization, the connection mode between the equipment is adjusted, and the purposes of reducing the occupied area and reducing the platform weight are achieved. The incoming and outgoing line modes of the offshore multi-end converter station are different from those of the onshore multi-end converter station, and are submarine cables, and the onshore multi-end converter station mostly adopts overhead lines. In addition, the offshore multi-end converter station is easier to connect with other offshore converter stations, and offshore interconnection is facilitated.
Drawings
Fig. 1 is a typical cross-sectional view of a dc field of a multi-end interconnected offshore flexible dc converter station according to an embodiment of the present invention;
fig. 2 is a first layer layout diagram of a direct current field of the marine flexible direct current converter station with interconnected multiple ends according to the embodiment of the present invention;
fig. 3 is a plan view of a second layer of the dc field of the multi-end interconnected marine flexible dc converter station according to the embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The present invention will be further described with reference to the accompanying drawings 1-3 and examples, but the invention is not limited thereto.
As shown in fig. 1-3, the utility model discloses an offshore flexible direct current converter station direct current field suitable for multi-end interconnection, offshore flexible direct current converter station direct current field is for being piled up the double-deck direct current field that constitutes in the second floor direct current field at first layer direct current field top by first layer direct current field, first layer direct current field contains the first platform that is located the intermediate position and symmetrical arrangement in utmost point 1 polar line direct current field and the utmost point 2 polar line direct current field of first platform width direction both sides, second floor direct current field contains the second platform that is located the intermediate position and symmetrical arrangement in utmost point 1 neutral line direct current field and the utmost point 2 neutral line direct current field of second platform width direction both sides, and each polar line direct current field and neutral line direct current all contain inlet wire return circuit, dc bus and a plurality of feeder return circuit. Wherein, the longitudinal projections of the first platform and the second platform on the horizontal plane are superposed.
Wherein the pole 1 pole line dc field and the pole 2 pole line dc field include a pole 1 wall bushing 110, a pole 2 wall bushing 120, a pole 1 bridge arm reactor 210, a pole 2 bridge arm reactor 220, a pole 1 dc current measuring device 310, a pole 2 dc current measuring device 320, a pole 1 dc voltage measuring device 410, a pole 2 dc voltage measuring device 420, a pole 1 arrester 510, a pole 2 arrester 520, a pole 1 high speed switch HSS610, a pole 2 high speed switch HSS620, a pole 1 pole line cable terminal 710, a pole 2 neutral cable terminal 720, a pole 1 post insulator 810, a pole 2 post insulator 820, a pole 1 double grounding isolator 910, a pole 2 double grounding isolator 920, a pole 1 suspension insulator 1010, a pole 2 suspension insulator 1020, a pole 1 single grounding isolator 1110, a pole 2 single grounding isolator 1120, a pole 1 dc tube bus 1210, a pole 2 dc tube bus 1220, a pole 1 grounding switch 3110, Pole 2 grounding switch 3120.
The pole 1 neutral dc field and the pole 2 neutral dc field include a pole 1 wall bushing 2110, a pole 2 wall bushing 2120, a pole 1 arm reactor 2210, a pole 2 arm reactor 2220, a pole 1 arrester 2310, a pole 2 arrester 2320, a pole 1 high speed switch HSS2400, a pole 1 neutral cable terminal 2510, a pole 2 neutral cable terminal 2520, a pole 1 measurement protection device 2610, a pole 2 measurement protection device 2620, a pole 1 post insulator 2710, a pole 2 post insulator 2720, a pole 1 suspension insulator 2810, a pole 2 suspension insulator 2820, a pole 1 pole 2 dc bus bar 2900, a pole 1 ground switch 3010, a pole 2 ground switch 3020, a pole 1 double ground isolation switch 3210, a pole 2 single ground switch 3220, a pole 1 single ground switch 3310, a pole 2 single ground switch 3320, a pole 1 line bus bar 3410, and a pole 2 line bus 3420.
The first layer of direct current field is a polar 1 polar line direct current field and a polar 2 polar line direct current field, and the polar 1 polar line direct current field and the polar 2 polar line direct current field are separately arranged on two sides of the first platform, are independent and are symmetrical to each other. The incoming line loop of the polar 1 polar line direct current field and the polar 2 polar line direct current field comprises wall bushing 110 and 120, bridge arm reactors 210 and 220, measurement protection equipment (direct current measurement devices 310 and 320, direct voltage measurement devices 410 and 420, lightning arresters 510 and 520), post insulators 810 and 820, double- grounding isolation switches 910 and 920 and the like; the direct current buses of the polar 1 polar line direct current field and the polar 2 polar line direct current field comprise pipe buses 1210 and 1220 and suspension insulators 1010 and 1020; the feeder circuit of the pole 1 pole dc field and the pole 2 pole dc field comprises single ground isolation switches 1110 and 1120, high speed switches HSS610 and 620, ground switches 3110 and 3120, pole cable terminals 710 and 720, and measurement protection equipment (dc current measuring devices 310 and 320, dc voltage measuring devices 410 and 420, lightning arresters 510 and 520), and the like. One side of the two bridge arm reactors 210 and 220 is connected with the wall bushing 110 and 120, the other side is electrically connected with the measurement protection equipment (the direct current measurement devices 310 and 320, the direct voltage measurement devices 410 and 420, and the lightning arresters 510 and 520), the other side of the two measurement protection equipment is connected with the flexible conductor (the pole 1 pole 2 flexible conductor is respectively supported by the post insulators 810 and 820), and finally the two double- grounding isolation switches 910 and 920 are connected as a wire inlet loop. The other sides of the two double-grounded isolating switches 910 and 920 of the incoming line loop are electrically connected with two direct current buses. The two direct current buses are respectively suspended and installed by two suspension insulators 1010 and 1020 as pipe buses 1210 and 1220. The two single-ground disconnectors 1110 and 1120 are electrically connected with two dc buses on one side and two high-speed switches HSS610 and 620 on the other side, and the two high-speed switches HSS610 and 620 on the other side are electrically connected with two- pole cable terminals 710 and 720 as four feeder loops in cooperation with measurement protection equipment (dc current measuring devices 310 and 320, 2 dc voltage measuring devices 410 and 420, lightning arresters 510 and 520) and ground switches 3110 and 3120.
The second layer of direct current field is a polar 1 neutral line direct current field and a polar 2 neutral line direct current field, and the polar 1 neutral line direct current field and the polar 2 neutral line direct current field are separately arranged on two sides of the second platform, are independent of each other and are symmetrical to each other. The line inlet circuit of the pole 1 neutral direct current field and the pole 2 neutral direct current field comprises wall bushing 2110 and 2120, bridge arm reactors 2210 and 2220, post insulators 2710 and 2720, tube nuts 3410 and 3420, measurement protection equipment 3510 and 3520, pole 1 double/pole 2 single- ground isolating switches 3210 and 3220 and the like; the direct current buses of the pole 1 neutral line direct current field and the pole 2 neutral line direct current field comprise a pipe bus 2900 and suspension insulators 2810 and 2820; the feeder loops of the pole 1 neutral dc field and the pole 2 neutral dc field include single ground isolation switches 3310 and 3320, a pole 1 high speed switch HSS2400, neutral cable terminals 2510 and 2520, and protection devices (arresters 2310 and 2320), among others. One side of each of the two bridge arm reactors 2210 and 2220 is connected with a wall bushing 2110 and 2120 respectively, the other side of each of the two bridge arm reactors 2210 and 2220 is electrically connected with a measurement protection device 3510 and 3520 respectively through a tube set 3410 and 3420 (the tube sets 3410 and 3420 on the side of the bridge arm reactors are supported by two post insulators), and the other side of the measurement protection device 3510 and 3520 is connected with a pole 1 double/pole 2 single-ground disconnecting switch 3210 and 3220 respectively to be used as an incoming line loop. The other sides of the two/polar 2 single- grounding isolating switches 3210 and 3220 of the incoming line loop pole 1 are respectively electrically connected with two direct current buses. One side of each of the single- grounding isolation switches 3310 and 3320 is electrically connected to two dc buses, the other side of the pole 1 single-grounding isolation switch 3310 is electrically connected to one side of the pole 1 high-speed switch HSS2400, the other side of the pole 1 high-speed switch HSS2400 is electrically connected to the pole 1 arrester 2310 and the grounding switch 3110 and the neutral cable terminal 2510 to form a feeder circuit, and the other side of the pole 2 single-grounding isolation switch 3320 is electrically connected to the pole 2 arrester 2320 and the grounding switch 3120 and the neutral cable terminal 2520 to form a feeder circuit.
The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete examples, and the explanation of the above examples is only used for helping to understand the method and the core idea of the utility model; this summary should not be construed as limiting the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. The utility model provides an offshore flexible direct current converter station direct current field suitable for multiterminal interconnection which characterized in that: the offshore flexible direct current converter station direct current field is a double-layer direct current field formed by a first layer of direct current field and a second layer of direct current field stacked on the top of the first layer of direct current field, the first layer of direct current field comprises a first platform located at the middle position and two polar line direct current fields symmetrically arranged on two sides of the first platform in the width direction, the second layer of direct current field comprises a second platform located at the middle position and two neutral line direct current fields symmetrically arranged on two sides of the second platform in the width direction, and each polar line direct current field and each neutral line direct current field respectively comprise an incoming line loop, a direct current bus and a plurality of feeder line loops.
2. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 1, characterized in that: the incoming line loop of any polar line direct current field comprises a wall bushing, a bridge arm reactor, a post insulator and a double-grounding isolating switch, the direct current bus of the polar line direct current field comprises a bus bar and a suspension insulator, and the feeder line loop of the polar line direct current field comprises a single-grounding isolating switch, a high-speed switch, a grounding switch and a polar line cable terminal.
3. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 2, characterized in that: and the wire inlet loop and the feeder line loop of the polar line direct current field both comprise measurement protection equipment.
4. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 3, characterized in that: in a wire inlet loop of the polar line direct current field, one side of a bridge arm reactor is connected with a wall bushing, the other side of the bridge arm reactor is connected with a measurement protection device, the other side of the measurement protection device is connected with a double-grounding isolating switch, and the other side of the double-grounding isolating switch is electrically connected with a direct current bus; in a feeder line loop, one side of a single grounding isolating switch is electrically connected with a direct current bus, the other side of the single grounding isolating switch is electrically connected with one side of a high-speed switch HSS, and the other side of the high-speed switch HSS is matched with a measurement protection device and a grounding switch and is finally electrically connected with an electrode wire cable terminal.
5. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 2, characterized in that: and the direct current bus of the polar line direct current field is subjected to bus suspension installation by a suspension insulator.
6. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 1, characterized in that: the incoming line loop of any neutral line direct current field comprises a wall bushing, a bridge arm reactor, a post insulator and a double/single grounding isolating switch, the direct current bus of the neutral line direct current field comprises a bus bar and a suspension insulator, and the feeder line loop of the neutral line direct current field comprises a single grounding isolating switch, a high-speed switch HSS, a grounding switch and a neutral cable terminal.
7. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 6, characterized in that: and the incoming line loop and the feeder line loop of the neutral line direct current field both comprise measurement protection equipment.
8. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 7, characterized in that: in a wire inlet loop of the neutral line direct current field, one side of a bridge arm reactor is connected with a wall bushing, the other side of the bridge arm reactor is electrically connected with a measurement protection device, the other side of the measurement protection device is connected with a double/single grounding isolating switch, and the other side of the double/single grounding isolating switch is electrically connected with a direct current bus; in a feeder circuit, one side of a single grounding isolating switch is electrically connected with a direct current bus, the other side of the single grounding isolating switch is electrically connected with one side of a high-speed switch HSS, and the other side of the high-speed switch HSS is matched with a measurement protection device and a grounding switch and is finally electrically connected with a neutral cable terminal.
9. The offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 6, characterized in that: and the direct current bus of the neutral line direct current field is subjected to bus suspension installation by a suspension insulator.
10. An offshore flexible direct current converter station direct current field suitable for multi-end interconnection according to claim 3 or 7, characterized in that: the measurement protection equipment comprises at least two of a direct current measurement device, a direct voltage measurement device and a lightning arrester.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120899578.0U CN215221748U (en) | 2021-04-28 | 2021-04-28 | Offshore flexible direct current converter station direct current field suitable for multi-terminal interconnection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120899578.0U CN215221748U (en) | 2021-04-28 | 2021-04-28 | Offshore flexible direct current converter station direct current field suitable for multi-terminal interconnection |
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| CN215221748U true CN215221748U (en) | 2021-12-17 |
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| CN202120899578.0U Active CN215221748U (en) | 2021-04-28 | 2021-04-28 | Offshore flexible direct current converter station direct current field suitable for multi-terminal interconnection |
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2021
- 2021-04-28 CN CN202120899578.0U patent/CN215221748U/en active Active
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