Offshore booster station accident oil pool layout system and layout method

Abstract

The present invention discloses an offshore booster station accident oil pool arrangement system, which relates to the field of new energy and power systems. It includes a bottom deck, an accident oil pool, a main transformer body and a radiator; the accident oil pool is connected to the first oil storage pit of the main transformer body, and the first oil storage pit is connected to the second oil storage pit of the radiator; the load center of the offshore booster station coincides with its geometric center; the oil drain hole of the accident oil pool is connected to the oil pumping device; and there are pile foundations at the four corners of the bottom deck. The present invention arranges the accident oil pool originally arranged on the front of the bottom deck in a convex manner on the back of the bottom deck, which can effectively save about 40 square meters of the bottom platform area of ​​the offshore booster station, saving about 3%, thereby reducing the investment cost of the offshore booster station. The present invention also relates to a method for arranging such an offshore booster station accident oil pool arrangement system.

Description

Technical Field

[0001] The present invention relates to the field of new energy and electric power systems, and more specifically to an offshore booster station accident oil pool arrangement system. The present invention also relates to an arrangement method of the offshore booster station accident oil pool arrangement system. Background Art

[0002] my country has a coastline of 18,000 kilometers and rich offshore wind energy resources. The offshore wind energy reserves that can be developed and utilized are as high as 750 million kilowatts, which is three times the onshore wind energy resources. Compared with onshore wind power, offshore wind farms have obvious advantages such as high wind speed, stable wind direction, low land cost and short energy transmission distance. Therefore, the rational development and utilization of offshore wind power resources has great strategic significance for my country to alleviate the energy crisis and improve the ecological environment. The cost of offshore substations is one of the key technologies that restrict the development and utilization of offshore wind power. It is a very necessary research content to reduce the development cost by optimizing the layout of offshore substations, reducing the platform area and pile foundation load of offshore substations.

[0003] At present, the offshore booster station is equipped with an accident oil collection device for collecting and storing the main transformer and radiator oil; the accident oil pool is large in size and weight, occupying a large space and area on the bottom floor, making it difficult to optimize the platform area and layout of the offshore booster station. In order to reasonably arrange other equipment of the offshore booster station, the platform area or number of floors of the offshore booster station can only be increased. In addition, due to restrictive factors such as platform area and equipment layout, the load center of the offshore booster station does not coincide with the geometric center, making the bearing capacity of each pile foundation different. When designing, it can only be checked according to the pile foundation with the largest bearing capacity, which not only increases the investment cost, but also reduces safety and reliability.

[0004] Therefore, it is necessary to develop an offshore booster station accident oil pool layout system that can effectively reduce the area and space of the offshore platform and optimize the pile foundation load. Summary of the invention

[0005] The first object of the present invention is to overcome the deficiencies of the above-mentioned background technology and to provide an offshore booster station accident oil pool arrangement system.

[0006] The second object of the present invention is to provide a method for arranging the offshore booster station accident oil pool arrangement system.

[0007] In order to achieve the above first object, the technical solution of the present invention is: an offshore booster station accident oil pool arrangement system, characterized in that it includes a bottom deck, an accident oil pool located at the back of the bottom deck, a main transformer body and a radiator located at the front of the bottom deck;

[0008] The accident oil pool is located at the back of the bottom deck and protrudes downwards. The accident oil pool is connected to the first oil storage pit of the main transformer body through an oil guide pipe, and the first oil storage pit is connected to the second oil storage pit of the radiator through an oil guide pipe;

[0009] The load center of the offshore booster station coincides with its geometric center;

[0010] The oil drain hole of the accident oil pool is connected to the oil pumping device;

[0011] The bottom deck is rectangular, and has pile foundations at four corners.

[0012] In the above technical solution, the accident oil pool is a right-angled trapezoid.

[0013] In order to achieve the above second objective, the technical solution of the present invention is: a method for arranging an offshore booster station accident oil pool arrangement system, characterized in that it comprises the following steps:

[0014] Step 1: Arrange the accident oil pool on the back of the bottom deck in a downward protruding manner;

[0015] Step 2: Determine the volume V of the accident oil pool according to the oil discharge volume of the main transformer body when the fault occurs. The volume V of the accident oil pool is greater than the oil discharge volume of the main transformer body when the fault occurs.

[0016] Step 3: The top view of the offshore booster station is a rectangle, and its geometric center is the geometric center of the rectangle; determine the load center of the offshore booster station according to the equipment layout and weight on the offshore booster station; adjust the load center of the offshore booster station by the weight and layout of the accident oil pool, so that the load center of the offshore booster station coincides with the geometric center, thereby determining the load center of the accident oil pool;

[0017] Step 3: In addition to the area occupied by the pile foundation, the spare area under the bottom deck of the offshore booster station can be used to arrange the accident oil pool. Considering the convenience of design and construction and maximizing the use of the spare area under the bottom deck, the accident oil pool is designed as a right-angled trapezoid with a bottom length of h and a width of c. The upper base of the right-angled trapezoid is a, the lower base is b, and the height is h. The distance between the load center of the accident oil pool and the lower base edge is (2a+b)h / (a+b) / 3. Therefore, the load center of the accident oil pool (2) can be adjusted by adjusting a and b.

[0018] The load center of the offshore booster station is adjusted by adjusting the load center of the accident oil pool, so that the load center of the offshore booster station coincides with the geometric center, thereby determining the position of the load center of the accident oil pool below the bottom deck of the offshore booster station;

[0019] According to the arrangement conditions under the bottom deck of the offshore booster station and the load center position of the accident oil pool, the position and size of the accident oil pool can be determined, and the size satisfies V=(a+b)hc / 2.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1) The present invention arranges the accident oil pool originally arranged on the front of the bottom deck in a convex manner on the back of the bottom deck, which can effectively save about 40 square meters of the bottom platform area of ​​the offshore booster station, saving about 3%, thereby reducing the investment cost of the offshore booster station.

[0022] 2) The present invention adjusts the load center of the offshore booster station to coincide with the geometric center through the design and layout of the accident oil pool size, thereby balancing the bearing capacity of the pile foundation of the offshore booster station, which is beneficial to the optimized design of the pile foundation and can reduce the design load of each pile foundation by about 46 tons, a reduction of about 5%, thereby reducing the investment cost of the pile foundation of the offshore booster station. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a top view of the present invention.

[0025] Figure 3 This is a side view of the accident oil pool.

[0026] Figure 4 This is a top view of the accident oil pool. DETAILED DESCRIPTION

[0027] The following detailed description of the implementation of the present invention is made in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0028] Referring to the attached drawings, it can be seen that the offshore booster station accident oil pool arrangement system is characterized by comprising a bottom deck 1, an accident oil pool 2 located at the back of the bottom deck 1, a main transformer body 3 and a radiator 4 located at the front of the bottom deck 1;

[0029] The accident oil pool 2 is located at the back of the bottom deck 1 and protrudes downward. The accident oil pool 2 is connected to the first oil storage pit 31 of the main transformer body 3 through the oil guide pipe 21. The first oil storage pit 31 is connected to the second oil storage pit 41 of the radiator 4 through the oil guide pipe 21.

[0030] The oil drain hole of the accident oil pool 2 is connected to the oil pumping device 5;

[0031] The bottom deck 1 is rectangular, with pile foundations 11 at the four corners;

[0032] The load center of the offshore booster station coincides with its geometric center.

[0033] The accident oil pool 2 is a right-angled trapezoidal body.

[0034] The method for arranging an offshore booster station accident oil pool arrangement system is characterized by comprising the following steps:

[0035] Step 1: Arrange the accident oil pool 2 on the back of the bottom deck 1 in a downwardly protruding manner;

[0036] Step 2: Determine the volume V of the accident oil pool 2 according to the oil discharge volume of the main transformer body 3 when the fault occurs, and the volume V of the accident oil pool 2 is greater than the oil discharge volume of the main transformer body 3 when the fault occurs;

[0037] Step 3: The top view of the offshore booster station is a rectangle, and its geometric center is the geometric center of the rectangle; the load center of the offshore booster station is determined according to the equipment layout and weight on the offshore booster station. The offshore booster station equipment includes the main transformer body 3, the radiator 4, the switch room, the grounding transformer room, the low-voltage distribution room, the GIS, etc.; the load center of the offshore booster station is adjusted by the weight and layout of the accident oil pool 2, so that the load center of the offshore booster station coincides with the geometric center, thereby determining the load center of the accident oil pool 2;

[0038] Step 4: In addition to the area occupied by the pile foundation 11, the spare area below the bottom deck 1 of the offshore booster station can be used to arrange the accident oil pool 2. Considering the convenience of design and construction and maximizing the use of the spare area below the bottom deck 1, the accident oil pool 2 is designed as a right-angled trapezoid, with a bottom length of h and a width of c. The upper base of the right-angled trapezoid is a, the lower base is b, and the height is h. Then, the distance between the load center of the accident oil pool 2 and the lower base edge is (2a+b)h / (a+b) / 3. Therefore, the load center of the accident oil pool 2 can be adjusted by adjusting a and b.

[0039] The load center of the offshore booster station is adjusted by adjusting the load center of the accident oil pool 2, so that the load center of the offshore booster station coincides with the geometric center, thereby determining the position of the load center of the accident oil pool 2 below the bottom deck 1;

[0040] According to the arrangement conditions below the bottom deck of the offshore booster station and the load center position of the accident oil pool 2, the position and size of the accident oil pool 2 can be determined, and the size satisfies V=(a+b)hc / 2.

[0041] Through continuous adjustment and design, the size and position of the accident oil pool 2 can be obtained while satisfying the constraints of the height limit, bottom size, etc. of the accident oil pool 2, thereby completing the design.

[0042] In actual use, the existing conventional 220kV offshore substation weighs about 3,700 tons and has a total of 4 pile foundations. Due to restrictive factors such as platform area and equipment layout, it is difficult for conventional substations to meet the coincidence of geometric center and load center during the design process, resulting in different bearing capacities of each pile foundation. Generally, the bearing capacity of each pile foundation fluctuates within 5% of the average pile foundation bearing capacity. Some pile foundations may have a bearing capacity of 971 tons and some may have a bearing capacity of 879 tons. However, for safety and reliability, all pile foundation bearing capacities are usually designed and checked according to 971 tons.

[0043] The present invention arranges the accident oil pool 2 originally arranged above the bottom deck 1 of the offshore booster station in a convex manner below the bottom deck 1 of the offshore booster station, and adjusts the load center of the offshore booster station through the design and arrangement of the accident oil pool 2, so that the load center of the offshore booster station coincides with the geometric center, so as to balance the load of each pile foundation 11 of the offshore booster station, thereby optimizing the bearing capacity of the pile foundation 11 and improving the safety and reliability of the pile foundation 11. At this time, the average load of the pile foundation 11 of the offshore booster station is about 925 tons, which is 46 tons less than before the optimization design, which is about 5% less, and at the same time improves the safety and reliability of the pile foundation of the offshore booster station.

[0044] Other parts not described belong to the prior art.

Claims

1. Offshore booster station accident oil pool layout system, characterized by: It comprises a bottom deck (1), an accident oil pool (2) located at the back of the bottom deck (1), and a main transformer body (3) and a radiator (4) located at the front of the bottom deck (1); The accident oil pool (2) is located on the back of the bottom deck (1) and protrudes downwards. The accident oil pool (2) is connected to a first oil storage pit (31) of the main transformer body (3) through an oil guide pipe (21). The first oil storage pit (31) is connected to a second oil storage pit (41) of the radiator (4) through an oil guide pipe (21). The oil drain hole of the accident oil pool (2) is connected to an oil pumping device (5); The bottom deck (1) is rectangular, and has pile foundations (11) at the four corners; The load center of the offshore booster station coincides with its geometric center, balancing the bearing capacity of the pile foundation of the offshore booster station and optimizing the pile foundation.

2. The offshore booster station accident oil pool arrangement system according to claim 1, characterized in that: The accident oil pool (2) is a right-angled trapezoidal body.

3. The method for arranging an offshore booster station accident oil pool arrangement system according to any one of claims 1 to 2, characterized in that: The following steps are involved: Step 1: Arrange the accident oil pool (2) on the back side of the bottom deck (1) in a downwardly protruding manner; Step 2: determining the volume V of the accident oil pool (2) according to the oil discharge volume of the main transformer body (3) when the fault occurs, wherein the volume V of the accident oil pool (2) is greater than the oil discharge volume of the main transformer body (3) when the fault occurs; Step 3: The top view of the offshore booster station is a rectangle, and its geometric center is the geometric center of the rectangle; determine the load center of the offshore booster station according to the equipment layout and weight on the offshore booster station; The load center of the offshore booster station is adjusted by the weight and arrangement of the accident oil pool (2), so that the load center of the offshore booster station coincides with the geometric center, thereby determining the load center of the accident oil pool (2); Step 4: In addition to the area occupied by the pile foundation (11) under the bottom deck (1) of the offshore booster station, the remaining area can be used to arrange the accident oil pool (2). Considering the convenience of design and construction and maximizing the use of the remaining area under the bottom deck (1), the accident oil pool (2) is designed as a right-angled trapezoid, with a bottom length of h and a width of c. The upper base of the right-angled trapezoid is a, the lower base is b, and the height is h. Then, the distance between the load center of the accident oil pool (2) and the lower base edge is (2a+b)h / (a+b) / 3. Therefore, the load center of the accident oil pool (2) can be adjusted by adjusting a and b. The load center of the offshore booster station is adjusted by adjusting the load center of the accident oil pool (2) so that the load center of the offshore booster station coincides with the geometric center, thereby determining the position of the load center of the accident oil pool (2) below the bottom deck (1) of the offshore booster station; According to the arrangement conditions below the bottom deck of the offshore booster station and the load center position of the accident oil pool (2), the position and size of the accident oil pool (2) can be determined, and the size satisfies V=(a+b)hc / 2.

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