CN217934599U - Electrical main wiring suitable for single-main-transformer high-resistance small-sized offshore booster station - Google Patents
Electrical main wiring suitable for single-main-transformer high-resistance small-sized offshore booster station Download PDFInfo
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- CN217934599U CN217934599U CN202220418120.3U CN202220418120U CN217934599U CN 217934599 U CN217934599 U CN 217934599U CN 202220418120 U CN202220418120 U CN 202220418120U CN 217934599 U CN217934599 U CN 217934599U
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Abstract
The utility model provides an electric main connection suitable for single main change area height is resisted small-size marine booster station, include: the system comprises a group of main transformer units, a group of 220kV power distribution unit, two groups of switch cabinet units, a group of station power utilization units and a group of high-impedance units. Two return inlet wires on the low-voltage side of the main transformer unit are respectively connected with the two groups of switch cabinet units, and the high-voltage side of the main transformer unit is connected with the 220kV power distribution device unit; three sections of low-voltage distribution buses of the station power unit are respectively connected with the two groups of switch cabinet units and one diesel generator through three return inlet wires; the high-impedance unit is connected in parallel to the outgoing submarine cable side of the 220kV power distribution unit. The utility model discloses an electrical main wiring scheme suitable for the small-size offshore wind power engineering far away from the bank distance has been explored for this scheme retrencies marine booster station equipment when satisfying the needs of seeing off of offshore wind farm, simplifies the structure of booster station, and this will effectively reduce the construction cost of marine booster station, improves the investment benefit of offshore wind power engineering, and comprehensive benefits is showing.
Description
Technical Field
The utility model belongs to the technical field of offshore wind power generation, especially, relate to an electric main connection suitable for single main change takes small-size offshore booster station of high resistance.
Background
Currently, with the progress of offshore wind power technology and the reduction of cost, the global market scale thereof is rapidly expanding. By the end of 2020, the grid-connected offshore wind electric capacity of China is about 899 ten thousand kW, the first three of the world are ascending, and the installed capacity of offshore wind power is newly increased for two consecutive years, namely the first world. Offshore wind power as a green energy with large potential, long industrial chain and advanced technology plays a more important role in the processes of energy transformation, economic development and the like in China.
Meanwhile, with the increase of offshore distance of offshore wind power engineering sites in China and the arrival of the era of low price on-line after 2021 years, the technical scheme sent by offshore wind power engineering with long offshore distance is explored, and the method for reducing the engineering construction investment cost is researched, so that the method has very important practical significance for the development of offshore wind power with long offshore distance.
Offshore wind power cross-sea power transmission lines are usually submarine cables, and long-route submarine cables generate large charging power during operation, so that line loss is increased and line capacity is occupied. At present, the technical scheme of configuring a high-voltage reactor in the offshore booster station can be adopted, and the reactive power of the submarine cable is absorbed and sent out through the parallel connection of the high-voltage reactor, so that the utilization rate of the capacity of the submarine cable is improved. Simultaneously, along with the promotion of the manufacturing ability of the electrical equipment who is applicable to marine booster station, two main transformer schemes that traditional booster station adopted can be replaced by single main transformer of novel large capacity.
An electric main wiring scheme suitable for small offshore wind power engineering with a long offshore distance is explored, so that the scheme meets the sending-out requirement of an offshore wind farm, simplifies offshore booster station equipment, simplifies the structure of a booster station, and reduces the size and the weight of the booster station. Under the requirement of cost reduction and efficiency improvement in the offshore wind power flat age, the cost pressure of offshore wind power engineering development is relieved, the investment benefit of the offshore wind power engineering is improved, and the market competitiveness of offshore wind power is enhanced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applicable to single main electric main wiring of taking the small-size marine booster station of high reactance that becomes to exist not enough among the prior art.
For this reason, the above-mentioned purpose of the present invention is achieved by the following technical solutions:
an electrical main junction for a small offshore booster station adapted for single main transformer with high reactance comprising: the power distribution system comprises a group of main transformer units, a group of 220kV power distribution unit, a first group of switch cabinet units, a second group of switch cabinet units, a group of station power utilization units and a group of high-impedance units;
the high-voltage side of the main transformer unit is connected with a 220kV power distribution unit, and two return inlet wires at the low-voltage side of the main transformer unit are respectively connected with the first group of switch cabinet units and the second group of switch cabinet units;
a first section of low-voltage distribution bus and a second section of low-voltage distribution bus in the station power utilization unit are respectively connected with the first group of switch cabinet units and the second group of switch cabinet units, and a third section of low-voltage distribution bus in the station power utilization unit is connected with the diesel generator;
the high-impedance unit is connected in parallel to the outlet submarine cable side of the 220kV power distribution unit.
When adopting above-mentioned technical scheme, the utility model discloses can also adopt or make up and adopt following technical scheme:
as the utility model discloses a preferred technical scheme: the main transformer unit comprises a main transformer which is a star-delta connected three-phase three-winding transformer;
a current transformer is arranged on the high-voltage side of the main transformer, and a current transformer is arranged on the high-voltage neutral point of the main transformer.
As the utility model discloses a preferred technical scheme: the 220kV power distribution device unit is a group of 220kV GIS, the incoming line side of the 220kV GIS is connected with the high-voltage side of the main transformer unit, and the outgoing line side of the 220kV GIS is connected with the 220kV submarine cable.
As the utility model discloses a preferred technical scheme: the electrical equipment in the 220kV GIS is sequentially provided with a lightning arrester, a grounding switch, an isolating switch, a grounding switch, a current transformer, a circuit breaker, a current transformer, a grounding switch, an isolating switch, a quick grounding switch, a lightning arrester, an isolating switch and a grounding switch of a high-resistance incoming line branch circuit and a voltage transformer from a main transformer side to an outgoing line submarine cable side;
wherein: the two isolating switches, the two current transformers and the circuit breaker are all connected in series into a circuit, and other electrical equipment and the high-resistance inlet wire branch circuit are connected in parallel into the circuit.
As the utility model discloses an preferred technical scheme: the first group of switch cabinet units comprises 8-plane SF6 insulated high-voltage switch cabinets, wherein: the 6-surface switch cabinet is a fan inlet cabinet, the 1-surface switch cabinet is a grounding and station-compatible inlet cabinet, and the 1-surface switch cabinet is a main transformer outlet cabinet;
the inlet side of the fan inlet cabinet is connected with a wind power plant current collection submarine cable, and the outlet side of the fan inlet cabinet is connected with a first section of 35kV bus;
the incoming line side of the grounding transformer substation transformer incoming line cabinet is connected with a first section of 35kV bus, and the outgoing line side of the grounding transformer substation transformer incoming line cabinet is connected with a substation power utilization unit;
the incoming side of the main transformer outgoing line cabinet is connected with the first section of 35kV bus, and the outgoing side of the main transformer outgoing line cabinet is connected with the main transformer unit.
As the utility model discloses a preferred technical scheme: the second group of switch cabinet units comprises 8-sided SF6 insulated high-voltage switch cabinets, wherein: the 6-face switch cabinet is a fan inlet cabinet, the 1-face switch cabinet is a grounding and station-changing inlet cabinet, and the 1-face switch cabinet is a main transformer outlet cabinet;
the inlet side of the fan inlet cabinet is connected with a wind power plant current collection submarine cable, and the outlet side of the fan inlet cabinet is connected with a second section of 35kV bus;
the incoming line side of the grounding transformer substation transformer incoming line cabinet is connected with a second section of 35kV bus, and the outgoing line side of the grounding transformer substation transformer incoming line cabinet is connected with the station power utilization unit;
the incoming side of the main transformer outgoing line cabinet is connected with the second section 35kV bus, and the outgoing side of the main transformer outgoing line cabinet is connected with the main transformer unit.
As the utility model discloses a preferred technical scheme: the station power utilization unit comprises two grounding and station-compatible transformers, a diesel generator and a low-voltage distribution bus,
wherein: the high-voltage side of the transformer for the grounding transformer and the station is respectively connected with the first group of switch cabinet units and the second group of switch cabinet units, the low-voltage side of the transformer for the grounding transformer and the station is respectively connected with the first section of low-voltage distribution bus and the second section of low-voltage distribution bus, and the third section of low-voltage distribution bus is connected with the diesel generator.
As the utility model discloses a preferred technical scheme: the first section of low-voltage distribution bus is connected with the second section of low-voltage distribution bus through a circuit breaker;
the first section of low-voltage distribution bus is connected with the third section of low-voltage distribution bus through two circuit breakers;
and the second section of low-voltage distribution bus is connected with the third section of low-voltage distribution bus through two circuit breakers.
As the utility model discloses an preferred technical scheme: the high-voltage reactor is a parallel high-voltage reactor with 220kV, three phases and a copper coil; the inlet wire side of the high-voltage reactor is connected with a current transformer in series; and the neutral point side of the high-voltage reactor is connected with a current transformer in series.
The utility model provides an electric main connection suitable for single main change area height is resisted small-size marine booster station, include: the system comprises a group of main transformer units, a group of 220kV power distribution unit, two groups of switch cabinet units, a group of station power utilization units and a group of high-impedance units. Two return inlet wires on the low-voltage side of the main transformer unit are respectively connected with the two groups of switch cabinet units, and the high-voltage side of the main transformer unit is connected with the 220kV power distribution device unit; three sections of low-voltage distribution buses of the station power utilization unit are respectively connected with the two groups of switch cabinet units and one diesel generator through three incoming lines; the high-impedance unit is connected in parallel to the outlet submarine cable side of the 220kV power distribution unit. Specifically, the method has the following beneficial effects:
1) The utility model provides an electric main connection suitable for single main change area high-reactance small-size marine booster station adopts 220kV circuit transformer bank wiring of a time, and this mode of connection has simple structure, and the small investment, take up an area of and economize, advantage such as economic benefits are good.
2) The utility model discloses a configuration height is resisted and is balanced the charging power who sends out the extra large cable and produce at the operation in-process, improves the transport efficiency of extra large cable, is applicable to the offshore wind power engineering far away from the bank distance.
3) The utility model discloses the station power consumption unit has adopted three-section low pressure distribution bus, wherein: two sections of low-voltage distribution buses are connected with two loops of 35kV buses through a grounding transformer and a station transformer respectively, and one section of low-voltage distribution bus is connected with a diesel engine, so that the reliability of power utilization of the station is improved.
4) The utility model provides an electric main wiring suitable for single main change small-size offshore booster station of high reactance of taking has explored an electric main wiring scheme suitable for the small-size offshore wind power engineering far away from the bank distance for this scheme when satisfying the needs of seeing off of offshore wind power field, retrench offshore booster station equipment, simplify booster station's structure, help realizing the compactization of offshore booster station to arrange and the optimization of booster station overall dimension and weight, further will effectively reduce offshore booster station investment construction cost, improve offshore wind power engineering's investment benefit, the comprehensive benefit is showing.
Drawings
Figure 1 is that the utility model provides an electric main wiring diagram suitable for single main small-size marine booster station that becomes area height reactance that becomes.
Fig. 2 is an electrical wiring diagram in the main transformer unit provided by the present invention.
Fig. 3 is a schematic diagram of electrical wiring within a 220kV switchgear unit as provided by the present invention.
Fig. 4 is a schematic diagram of electrical connections within a first group of switchgear units provided by the present invention.
Fig. 5 is a schematic diagram of electrical wiring in a second group of switchgear units provided by the present invention.
Fig. 6 is a schematic diagram of electrical wiring in the station power unit provided by the present invention.
Fig. 7 is a schematic diagram of electrical wiring in the high impedance unit provided by the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
as shown in fig. 1, the utility model provides an electric main junction suitable for single main change takes small-size offshore booster station of high reactance, include: a set of main transformer units 100, a set of 220kV power distribution device units 200, a first set of switch cabinet units 300, a second set of switch cabinet units 400, a set of station power units 500 and a set of high reactance units 600. In the electric main wiring, the high-voltage side of a main transformer unit 100 is connected with a 220kV power distribution device unit 200; the two low-voltage side return inlet wires of the main transformer unit 100 are respectively connected with the first group of switch cabinet units 300 and the second group of switch cabinet units 400; the station power utilization unit 500 is characterized in that a first low-voltage distribution bus and a second low-voltage distribution bus are respectively connected with a first group of switch cabinet units 300 and a second group of switch cabinet units 400, and a third low-voltage distribution bus is connected with a diesel generator; the high reactive unit 600 is connected in parallel to the outgoing submarine cable side of the 220kV switchgear unit 200.
The group of main transformer units 100 comprises a main transformer 111, wherein the main transformer 111 is a star-delta connected three-phase three-winding transformer; the main transformer 111 is provided with a current transformer 112 at the high-voltage side; the main transformer 111 has a current transformer 113 at a high-voltage neutral point.
The 220kV distribution device unit 200 is a group of 220kV GIS, the wire inlet side of the 220kV GIS is connected with the high-voltage side of a main transformer, and the wire outlet side of the 220kV GIS is connected with a 220kV submarine cable. The electrical equipment in the 220kV GIS comprises a lightning arrester 271, a grounding switch 231, an isolating switch 221, a grounding switch 232, a current transformer 261, a circuit breaker 211, a current transformer 262, a grounding switch 233, an isolating switch 222, a quick grounding switch 241, a lightning arrester 272, a high-resistance incoming branch isolating switch 223, a grounding switch 234 and a voltage transformer 251 in sequence from a main transformer side to an outgoing submarine cable side; wherein: the disconnectors 221 and 222, the current transformers 261 and 262 and the circuit breaker 211 are connected in series into the line, and the remaining electrical equipment and the high-impedance incoming branch are connected in parallel into the line.
The first group of switch cabinet units 300 comprises 8 SF6 insulating high-voltage switch cabinets 310-380, wherein: the 6-face switch cabinets are fan inlet cabinets 310 to 330 and 350 to 370, the 1-face switch cabinet is a grounding and station-changing inlet cabinet 340, and the 1-face switch cabinet is a main transformer outlet cabinet 380; the inlet sides of the fan inlet cabinets 310 to 330 and 350 to 370 are connected with wind power plant collecting submarine cables, and the outlet sides of the fan inlet cabinets 310 to 330 and 350 to 370 are connected with a first section of 35kV bus 390; the incoming line side of the grounding transformer substation-compatible transformer incoming line cabinet 340 is connected with the first section of 35kV bus 390, and the outgoing line side of the grounding transformer substation-compatible transformer incoming line cabinet 340 is connected with the substation power unit 500; the incoming line side of the main transformer outgoing line cabinet 380 is connected with the first section of 35kV bus 390, and the outgoing line side of the main transformer outgoing line cabinet 380 is connected with the main transformer unit 100.
The embodiment is described by taking the fan inlet cabinet 310 as an example: the electric equipment in the wind turbine inlet cabinet 310 switch cabinet sequentially comprises a zero sequence current transformer 316, a lightning arrester 313, a current transformer 315, a live display 314, a circuit breaker 311 and a three-station isolating switch 312 from a wind power station collection submarine cable to a 35kV bus. In the rest fan inlet cabinets, the arrangement of the electrical equipment of the fan inlet cabinets 320, 330 and 350 is completely the same as that of the fan inlet cabinet 310; compared with the electrical equipment in the fan inlet cabinet 310, the fan inlet cabinet 360 is additionally provided with a 35kV bus lightning arrester 367; compared with the electrical equipment in the fan inlet cabinet 310, the fan inlet cabinet 370 is additionally provided with a two-station isolating switch 377 and a bus arrester 378; the arrangement of the electrical equipment in the variable incoming cabinet 340 for the grounding transformer and the station is completely the same as that in the fan incoming cabinet 310; the electrical equipment in the main transformer outlet cabinet 380 sequentially comprises a 35kV bus and a main transformer connecting cable: three-station isolating switch 382, breaker 381, live display 384, current transformer 385, lightning arrester 383 and zero sequence current transformer 386.
The second group of switch cabinet units 400 comprises 8-surface SF6 insulating high-voltage switch cabinets 410 to 480, wherein: the 6-surface switch cabinet is a fan inlet cabinet 410 to 460, the 1-surface switch cabinet is a grounding and station-compatible inlet cabinet 470, and the 1-surface switch cabinet is a main transformer outlet cabinet 480; the arrangement of the electric equipment in the fan inlet cabinets 410-440 is completely the same as that in the fan inlet cabinet 310; the fan inlet cabinet 450 is arranged the same as the electrical equipment in the fan inlet cabinet 360; the fan inlet cabinet 460 is arranged the same as the electrical equipment in the fan inlet cabinet 370; the arrangement of the electrical equipment in the grounding transformer substation transformer inlet cabinet 470 is the same as that in the grounding transformer substation transformer inlet cabinet 340; the main substation outlet cabinet 480 is arranged the same as the electrical equipment in the main substation outlet cabinet 380.
The station power unit 500 includes two transformers 511 and 512 for grounding and station changing, a diesel generator 531, and low-voltage distribution buses 541 to 543, wherein: the high-voltage side of the transformer 511 for the ground transformer and substation is connected with the transformer inlet cabinet 340 for the ground transformer and substation in the first group of switch cabinet units 300, the low-voltage side of the transformer 511 for the ground transformer and substation is connected with the first-stage low-voltage distribution bus 541 through the breaker 551, and the high-voltage side neutral point of the transformer 511 for the ground transformer and substation is grounded through the grounding resistor 521; the high-voltage side of the transformer 512 for the combined grounding transformer is connected to the transformer inlet 470 for the combined grounding transformer in the second group of switch cabinet units 400, the low-voltage side of the transformer 512 for the combined grounding transformer is connected to the second low-voltage distribution bus 542 through the circuit breaker 552, and the high-voltage side neutral point of the transformer 512 for the combined grounding transformer is grounded through the grounding resistor 522; the diesel generator 531 is connected to a third-stage low-voltage distribution busbar 543 via a circuit breaker 553; the first section of low-voltage distribution bus 541 is connected with the second section of low-voltage distribution bus 542 through a circuit breaker 555; the first section low-voltage distribution bus 541 is connected with the third section low-voltage distribution bus 543 through circuit breakers 554 and 558; the second low voltage distribution busbar 542 is connected to the third low voltage distribution busbar 543 via circuit breakers 556 and 557.
The high-voltage reactor unit 600 comprises a high-voltage reactor 611, wherein the high-voltage reactor 611 is a parallel high-voltage reactor with 220kV, three phases and a copper coil; the inlet side of the high-voltage reactor 611 is connected with a current transformer 612 in series; the neutral point side of the high-voltage reactor 611 is connected in series with a current transformer 613.
The utility model provides an electric main wiring suitable for single main change takes small-size marine booster station of high reactance has explored an electric main wiring scheme suitable for the small-size offshore wind power engineering far away from the bank distance for this scheme retrencies marine booster station equipment when satisfying the needs of seeing off of offshore wind farm, simplifies booster station's structure, reduces booster station's size and weight. Under the requirement of cost reduction and efficiency improvement in the offshore wind power flat age, the cost pressure of offshore wind power engineering development is relieved, the investment benefit of the offshore wind power engineering is improved, the market competitiveness of offshore wind power is enhanced, and the comprehensive benefit is remarkable.
The utility model discloses a specific example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help 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 (9)
1. The utility model provides an electric main connection suitable for single main change takes small-size offshore booster station of high reactance which characterized in that: the electric main connection suitable for the small-sized offshore booster station with the single main transformer and high impedance comprises: the system comprises a group of main transformer units (100), a group of 220kV power distribution device units (200), a first group of switch cabinet units (300), a second group of switch cabinet units (400), a group of station power utilization units (500) and a group of high-impedance units (600);
the high-voltage side of the main transformer unit (100) is connected with a 220kV power distribution unit (200), and two return incoming lines at the low-voltage side of the main transformer unit (100) are respectively connected with a first group of switch cabinet units (300) and a second group of switch cabinet units (400);
a first section of low-voltage distribution bus (541) and a second section of low-voltage distribution bus (542) in the station power utilization unit (500) are respectively connected with a first group of switch cabinet units (300) and a second group of switch cabinet units (400), and a third section of low-voltage distribution bus (543) in the station power utilization unit (500) is connected with a diesel generator;
the high-impedance unit (600) is connected in parallel to the outgoing submarine cable side of the 220kV power distribution unit (200).
2. The electrical main connection suitable for the single main transformer high-impedance small offshore booster station of claim 1, characterized in that: the main transformer unit (100) comprises a main transformer (111), and the main transformer (111) is a star-delta connected three-phase three-winding transformer;
a first current transformer (112) is arranged on the high-voltage side of the main transformer (111), and a second current transformer (113) is arranged at the high-voltage neutral point of the main transformer (111).
3. The electrical main connection suitable for the single main transformer high-impedance small offshore booster station of claim 1, characterized in that: the 220kV power distribution device unit (200) is a group of 220kV GIS, the incoming line side of the 220kV GIS is connected with the high-voltage side of the main transformer unit (100), and the outgoing line side of the 220kV GIS is connected with a 220kV submarine cable.
4. The electrical main connection for a small offshore booster station with high reactance for a single main transformer as claimed in claim 3, characterized in that: the electrical equipment in the 220kV GIS is sequentially provided with a first arrester (271), a first grounding switch (231), a first isolating switch (221), a second grounding switch (232), a third current transformer (261), a first circuit breaker (211), a fourth current transformer (262), a third grounding switch (233), a second isolating switch (222), a quick grounding switch (241), a second arrester (272), a third isolating switch (223) and a fourth grounding switch (234) of a high-resistance incoming line branch and a voltage transformer (251) from a main transformer side to an outgoing line submarine cable side;
wherein: the first disconnecting switch (221), the second disconnecting switch (222), the third current transformer (261), the fourth current transformer (262) and the first breaker (211) are connected in series into a line, and the rest of electrical equipment and the high-impedance incoming line branch circuit are connected in parallel into the line.
5. The electrical main connection for a small offshore booster station with high reactance for a single main transformer as claimed in claim 1, characterized in that: the first group of switchgear units (300) comprises an 8-sided SF6 insulated high voltage switchgear, wherein: the 6-face switch cabinet is a fan inlet cabinet, the 1-face switch cabinet is a first grounding and station-compatible inlet cabinet (340), and the 1-face switch cabinet is a first main transformer outlet cabinet (380);
the inlet side of the fan inlet cabinet is connected with a wind power plant current collection submarine cable, and the outlet side of the fan inlet cabinet is connected with a first section of 35kV bus (390);
the incoming line side of the first grounding transformer substation-compatible transformer incoming line cabinet (340) is connected with a first section of 35kV bus (390), and the outgoing line side of the first grounding transformer substation-compatible transformer incoming line cabinet (340) is connected with the substation power utilization unit (500);
the incoming line side of the first main transformer outgoing line cabinet (380) is connected with a first section of 35kV bus (390), and the outgoing line side of the first main transformer outgoing line cabinet (380) is connected with a main transformer unit (100).
6. The electrical main connection for a small offshore booster station with high reactance for a single main transformer as claimed in claim 1, characterized in that: the second group of switchgear units (400) comprises an 8-sided SF6 insulated high voltage switchgear, wherein: the 6-face switch cabinet is a fan inlet cabinet, the 1-face switch cabinet is a second grounding and station-compatible inlet cabinet (470), and the 1-face switch cabinet is a second main transformer outlet cabinet (480);
the inlet side of the fan inlet cabinet is connected with a wind power plant current collection submarine cable, and the outlet side of the fan inlet cabinet is connected with a second section of 35kV bus (490);
the incoming line side of the second grounding transformer substation transformer incoming line cabinet (470) is connected with a second section of 35kV bus (490), and the outgoing line side of the second grounding transformer substation transformer incoming line cabinet (470) is connected with the station power unit (500);
the incoming line side of the second main transformer outgoing line cabinet (480) is connected with a second section of 35kV bus (490), and the outgoing line side of the second main transformer outgoing line cabinet (480) is connected with a main transformer unit (100).
7. The electrical main connection suitable for the single main transformer high-impedance small offshore booster station of claim 1, characterized in that: the station power utilization unit (500) comprises two grounding-to-station transformers, a diesel generator (531), a first section of low-voltage distribution bus (541), a second section of low-voltage distribution bus (542) and a third section of low-voltage distribution bus (543);
wherein: the high-voltage side of the transformer for the grounding transformer and the station is connected with a first group of switch cabinet units (300) and a second group of switch cabinet units (400) respectively, the low-voltage side of the transformer for the grounding transformer and the station is connected with a first section of low-voltage distribution bus (541) and a second section of low-voltage distribution bus (542) respectively, and a third section of low-voltage distribution bus (543) is connected with a diesel generator (531).
8. The electrical main connection suitable for the single main transformer high-impedance small offshore booster station of claim 7, characterized in that: the first section of low-voltage distribution bus (541) is connected with the second section of low-voltage distribution bus (542) through a third circuit breaker (555);
the first section of low-voltage distribution bus (541) and the third section of low-voltage distribution bus (543) are connected through a second breaker (554) and a sixth breaker (558);
and the second-section low-voltage distribution bus (542) and the third-section low-voltage distribution bus (543) are connected through a fourth breaker (556) and a fifth breaker (557).
9. The electrical main connection suitable for the single main transformer high-impedance small offshore booster station of claim 1, characterized in that: the high-voltage reactor (611) comprises a high-voltage reactor (611), and the high-voltage reactor (611) is a parallel high-voltage reactor with 220kV, three phases and a copper coil; the inlet wire side of the high-voltage reactor (611) is connected with a current transformer (612) in series; the neutral point side of the high-voltage reactor (611) is connected with a current transformer (613) in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220418120.3U CN217934599U (en) | 2022-02-28 | 2022-02-28 | Electrical main wiring suitable for single-main-transformer high-resistance small-sized offshore booster station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220418120.3U CN217934599U (en) | 2022-02-28 | 2022-02-28 | Electrical main wiring suitable for single-main-transformer high-resistance small-sized offshore booster station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217934599U true CN217934599U (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220418120.3U Active CN217934599U (en) | 2022-02-28 | 2022-02-28 | Electrical main wiring suitable for single-main-transformer high-resistance small-sized offshore booster station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217934599U (en) |
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- 2022-02-28 CN CN202220418120.3U patent/CN217934599U/en active Active
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