CN211741443U - Bipolar short-circuit test plane arrangement structure of island flexible direct current converter station - Google Patents
Bipolar short-circuit test plane arrangement structure of island flexible direct current converter station Download PDFInfo
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- CN211741443U CN211741443U CN201922403171.XU CN201922403171U CN211741443U CN 211741443 U CN211741443 U CN 211741443U CN 201922403171 U CN201922403171 U CN 201922403171U CN 211741443 U CN211741443 U CN 211741443U
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Abstract
The bipolar short-circuit test plane arrangement structure of the island flexible direct-current converter station comprises an indoor outdoor direct-current field and an outdoor short-circuit test field, wherein the original anode and cathode line outlets of the island flexible direct-current converter station are led to the outdoor short-circuit test field through the outdoor direct-current field to perform a bipolar short-circuit test; the indoor and outdoor direct current field mainly comprises a smoothing reactor, a resistance-capacitance voltage divider, a direct current polar arrester, a first cable terminal connected with the indoor direct current field through a submarine cable and a second cable terminal connected with the outdoor short circuit test field; the off-station short-circuit test field mainly comprises a post insulator, aluminum magnesium alloy pipes and third cable terminals connected with an in-station outdoor direct-current field through submarine cables, wherein the post insulator supports the aluminum magnesium alloy pipes and is arranged in two rows at the middle position of the off-station short-circuit test field to form a positive electrode and a negative electrode of a short-circuit test, and the east side and the south side of the post insulator are respectively and correspondingly provided with the third cable terminals; and a circle of non-metal fence is arranged around the short-circuit test field outside the station.
Description
Technical Field
The utility model belongs to the technical field of electric power, concretely relates to gentle direct current conversion station's of island bipolar short circuit test plane arrangement structure.
Background
The flexible direct-current transmission is a novel transmission technology based on a power electronic technology, and has strong advantages in the aspects of island power supply, urban distribution network capacity increase, wind power grid connection and the like. Wherein the dc breaker and the converter valve are hearts of a flexible dc converter station. The bipolar short-circuit test is an effective means for verifying the operation reliability of the direct-current circuit breaker and the converter valve, and no engineering experience for carrying out the field bipolar short-circuit test exists at present at home and abroad. In view of the special topography of the island, the direct current polar lines of the flexible direct current converter station on the island generally adopt submarine cable outgoing lines, which are different from overhead outgoing lines, so that the direct current polar lines are convenient to connect. Therefore, an arrangement scheme of a flexible direct current converter station field bipolar short-circuit test needs to be researched, the engineering blank of the flexible direct current converter station short-circuit test is filled, and reference is provided for design of the flexible direct current converter station short-circuit test scheme in the future.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a experimental plane arrangement structure of bipolar short circuit suitable for gentle direct current conversion station of island is provided.
The utility model aims at accomplishing through following technical scheme, a gentle direct current conversion station's of island bipolar short circuit test plane arrangement structure, plane arrangement structure includes outdoor direct current field and the short circuit test field outside the station in the station, the export of the former positive negative polar line of the gentle direct current conversion station of island is drawn to connect to the short circuit test field outside the station and is carried out the bipolar short circuit test behind the outdoor direct current field in the station.
Further, the indoor outdoor direct current field mainly comprises a smoothing reactor, a resistance-capacitance voltage divider, a direct current polar arrester, a first cable terminal and a second cable terminal; the flat wave reactor group is arranged in a straight line in the middle position of an indoor outdoor direct current field, direct current polar line arresters, resistance-capacitance voltage dividers and second cable terminals are sequentially and symmetrically arranged on the east and west sides of the flat wave reactor, first cable terminals are arranged on the south sides of the flat wave reactor, the first cable terminals are connected with an outlet cable terminal of an indoor direct current field through a submarine cable, the second cable terminals are connected with an outdoor short circuit test field through the submarine cable, original positive and negative polar lines of the island flexible direct current station are connected to the first cable terminals of the indoor outdoor direct current field through the submarine cable, then sequentially pass through the flat wave reactors, the direct current polar line arresters and the resistance-capacitance voltage dividers, and finally the second cable terminals are connected to the outdoor short circuit test field.
Furthermore, the off-station short-circuit test field mainly comprises a post insulator, aluminum magnesium alloy tubes and third cable terminals, wherein the post insulator supports the aluminum magnesium alloy tubes and is arranged in two rows in the middle of the off-station short-circuit test field to form a positive electrode and a negative electrode of the short-circuit test, and the east side and the south side of the post insulator are respectively and correspondingly provided with the third cable terminals; and the third cable terminal is connected with the second cable terminal of the indoor outdoor direct-current field through a submarine cable.
Furthermore, a circle of non-metal fence is arranged around the short-circuit test field outside the station, and a main grounding grid is laid on the ground in the fence.
The utility model has the advantages of: experimental plane arrangement structure space utilization of bipolar short circuit is high, can fill gentle straight current conversion station short circuit test's engineering blank, provide the reference for the design of gentle straight current conversion station short circuit test scheme from now on.
Drawings
Fig. 1 is a plan layout view of an indoor outdoor direct current field of the utility model;
fig. 2 is a plan layout view of the off-site short circuit test field of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1-2, a gentle straight convertor station's of island bipolar short circuit test plane arrangement structure, plane arrangement structure includes outdoor direct current field 1 and the short circuit test field 2 outside the station in the station, the export of the former positive negative pole line of the gentle straight convertor station of island is drawn to connect to the short circuit test field 2 outside the station and is carried out the short circuit test after outdoor direct current field 1 in the station.
Referring to fig. 1, the indoor outdoor dc field 1 mainly includes a smoothing reactor 11, a resistance-capacitance voltage divider 12, a dc pole arrester 13, a first cable terminal 14 and a second cable terminal 15; smoothing reactor 11 is the in-line and arranges the intermediate position in outdoor direct current field 1 in the station, and smoothing reactor 11's thing both sides have direct current polar line arrester 13, resistance-capacitance voltage divider 12 and second cable terminal 15 in proper order symmetrical arrangement, and first cable terminal 14 has been arranged to smoothing reactor 11's south side, the gentle direct current station's of island original positive negative pole line is connected to the first cable terminal 14 in outdoor direct current field 1 in the station through the submarine cable, and back is connected to through smoothing reactor 11, direct current polar line arrester 13 and resistance-capacitance voltage divider 12 in proper order, is connected to by second cable terminal 15 at last the short circuit test field outside the station. The arrangement of the outdoor direct current field 1 in the station ensures the safety of the converter valve and the direct current breaker in the short-circuit test on one hand, and measures the electric quantity required in the short-circuit test on the other hand.
Referring to fig. 2, the off-station short-circuit test field 2 mainly includes a post insulator 21, an al-mg alloy tube 22 and a third cable terminal 23, the post insulator 21 supports the al-mg alloy tube 22 and arranges the al-mg alloy tube 22 in two rows at the middle position of the off-station short-circuit test field 2 to form a positive electrode and a negative electrode of the short-circuit test, and the east side and the south side of the post insulator 21 are respectively and correspondingly provided with the third cable terminal 23; the third cable terminal 23 is connected with the second cable terminal 15 of the indoor outdoor direct current field 1 through a submarine cable; in consideration of personnel operation and safety distance in the short-circuit test, a circle of non-metal fence 24 is arranged around the short-circuit test field 2 outside the station, and a main grounding grid is laid on the ground in the fence 24 to ensure that the step voltage and the contact voltage meet the standard requirements.
The bipolar short circuit test plane arrangement structure of the Zhoushan +/-200 kV sea-fixing converter station is taken as an example for explanation. The direct current field of the +/-200 kV fixed-sea converter station is arranged indoors, and an external cable is connected with the Daishan station. Because the short-circuit test device does not have the characteristic of overhead outgoing line convenient leading, the short-circuit test is carried out in a mode of leading the line to the outside of the station by an external leading line. Two power distribution device areas of an indoor outdoor direct current field and an outdoor short circuit test field are additionally arranged.
Outdoor direct current field planar arrangement in station is shown in figure 1, the smoothing reactor is arranged in the middle in a straight line, direct current polar line arresters, resistance-capacitance voltage dividers and cable terminals are symmetrically arranged on the east side and the west side, and cable terminals are arranged on the south side. The indoor direct current field positive and negative wires are connected to cable terminals on the south side of the outdoor direct current field through a submarine cable, sequentially pass through a smoothing reactor, a direct current polar arrester and a resistance-capacitance voltage divider, and are finally connected to an outdoor short circuit test field through the submarine cable through cable terminals on the east and west sides.
The plane layout of the short-circuit test field outside the station is shown in figure 2, 2 aluminum-magnesium alloy pipes are supported by 4 post insulators and are arranged in two rows in the middle of the short-circuit test field to form a positive electrode and a negative electrode of the short-circuit test, and 2 outdoor cable terminals are arranged on the south side and the east side and are connected to an outdoor direct-current field inside the station through submarine cables.
The specific embodiments described herein are merely illustrative of the principles of the present invention and its efficacy, and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.
Claims (4)
1. The bipolar short-circuit test plane arrangement structure of the island flexible direct current converter station is characterized in that: the plane arrangement structure comprises an indoor outdoor direct current field and an outdoor short circuit test field, and the original anode and cathode line outlets of the island flexible direct current converter station are led to the outdoor short circuit test field for bipolar short circuit test after passing through the indoor outdoor direct current field.
2. The bipolar short circuit test floor arrangement of claim 1, wherein: the indoor outdoor direct current field mainly comprises a smoothing reactor, a resistance-capacitance voltage divider, a direct current polar arrester, a first cable terminal and a second cable terminal; the flat wave reactor group is arranged in a straight line in the middle position of an indoor outdoor direct current field, direct current polar line arresters, resistance-capacitance voltage dividers and second cable terminals are sequentially and symmetrically arranged on the east and west sides of the flat wave reactor, first cable terminals are arranged on the south sides of the flat wave reactor, the first cable terminals are connected with an outlet cable terminal of an indoor direct current field through a submarine cable, the second cable terminals are connected with an outdoor short circuit test field through the submarine cable, original positive and negative polar lines of the island flexible direct current station are connected to the first cable terminals of the indoor outdoor direct current field through the submarine cable, then sequentially pass through the flat wave reactors, the direct current polar line arresters and the resistance-capacitance voltage dividers, and finally the second cable terminals are connected to the outdoor short circuit test field.
3. The bipolar short circuit test planar arrangement of claim 1 or 2, wherein: the off-station short-circuit test field mainly comprises a post insulator, aluminum magnesium alloy tubes and third cable terminals, wherein the post insulator supports the aluminum magnesium alloy tubes and is arranged in two rows in the middle of the off-station short-circuit test field to form a positive electrode and a negative electrode of a short-circuit test, and the east side and the south side of the post insulator are respectively and correspondingly provided with the third cable terminals; and the third cable terminal is connected with the second cable terminal of the indoor outdoor direct-current field through a submarine cable.
4. The bipolar short circuit test floor arrangement of claim 3, wherein: a circle of non-metal fence is arranged around the short-circuit test field outside the station, and a main grounding grid is laid on the ground inside the fence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922403171.XU CN211741443U (en) | 2019-12-27 | 2019-12-27 | Bipolar short-circuit test plane arrangement structure of island flexible direct current converter station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922403171.XU CN211741443U (en) | 2019-12-27 | 2019-12-27 | Bipolar short-circuit test plane arrangement structure of island flexible direct current converter station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211741443U true CN211741443U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922403171.XU Expired - Fee Related CN211741443U (en) | 2019-12-27 | 2019-12-27 | Bipolar short-circuit test plane arrangement structure of island flexible direct current converter station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211741443U (en) |
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2019
- 2019-12-27 CN CN201922403171.XU patent/CN211741443U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201023 Termination date: 20211227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |