CN115434550A - Transformer substation structure and shock insulation performance evaluation method thereof - Google Patents
Transformer substation structure and shock insulation performance evaluation method thereof Download PDFInfo
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- CN115434550A CN115434550A CN202211149223.5A CN202211149223A CN115434550A CN 115434550 A CN115434550 A CN 115434550A CN 202211149223 A CN202211149223 A CN 202211149223A CN 115434550 A CN115434550 A CN 115434550A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/04—Transformer houses; Substations or switchgear houses
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
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Abstract
The invention provides a transformer substation structure and a shock insulation performance evaluation method thereof, wherein the transformer substation structure comprises a transformer substation main body, and the transformer substation main body comprises: an overground layer and an underground layer positioned below the overground layer; each upright column comprises an upper buttress and a lower buttress which are respectively positioned in the overground layer and the underground layer, and a shock insulation support is arranged between each upper buttress and the corresponding lower buttress; at least part of the shock insulation support has elasticity in the vertical direction, so that the transmission of shock between an overground layer and an underground layer is reduced, and the problem that a shock absorption technology in the prior art is not suitable for electric equipment in an indoor transformer substation is solved.
Description
Technical Field
The invention relates to the technical field of transformer substation shock insulation, in particular to a transformer substation structure and a shock insulation performance evaluation method thereof.
Background
The electrical equipment in the prior art is electroceramic high-voltage electrical equipment, the structural characteristics of the electroceramic high-voltage electrical equipment also determine the vulnerability of the electroceramic high-voltage electrical equipment in an earthquake, and the insulating parts of the electroceramic high-voltage electrical equipment are all composed of porcelain sleeves, and the earthquake damage characteristic of the electroceramic high-voltage electrical equipment is that the electroceramic high-voltage electrical equipment is mostly broken at the root parts of the porcelain sleeves.
At present, in a common energy dissipation and shock absorption technology, an energy dissipation (damping) device (or element) is arranged between an electrical device and a bottom bracket thereof, and the device generates friction, bending (or shearing, torsion) elastoplasticity (or viscoelasticity) hysteretic deformation to dissipate or absorb energy input into the electrical device by an earthquake so as to reduce the earthquake reaction of the electrical device, so that the electrical device is damaged or collapsed, and the shock absorption control purpose is achieved.
The friction damping shock absorber, the lead alloy shock absorber and the rubber pad shock absorber are mainly applied to electrical equipment. The friction damping shock absorbers required by each high-voltage electrical device are large in number and high in cost, for indoor substation equipment, the mode of arranging a bottom support does not exist in the two-layer indoor installation of the electrical devices, therefore, shock absorption cannot be achieved in the mode, the arrangement mode has a shock absorption effect, the purpose of reducing the acceleration of the electrical devices to be within 0.4g of a standard requirement value cannot be achieved, the shock absorption efficiency is low, rubber of the shock absorbers is prone to aging, and the service life is short.
Disclosure of Invention
The invention mainly aims to provide a transformer substation structure and a shock insulation performance evaluation method thereof, and aims to solve the problem that a shock absorption technology in the prior art is not suitable for electrical equipment in an indoor transformer substation.
In order to achieve the above object, according to one aspect of the present invention, there is provided a substation structure including a substation main body including: an above-ground layer and an underground layer below the above-ground layer; each upright column comprises an upper buttress and a lower buttress which are respectively positioned in the overground layer and the underground layer, and a shock insulation support is arranged between each upper buttress and the corresponding lower buttress; wherein at least part of the seismic isolation support is elastic along the vertical direction so as to reduce the transmission of vibration between the overground layer and the underground layer.
Furthermore, the plurality of upright columns are divided into M upright column groups arranged at intervals along the first horizontal direction, and each upright column group comprises N upright columns arranged at intervals along the second horizontal direction; the first horizontal direction and the second horizontal direction are vertical to each other, M and N are both larger than 1 and are both integers.
Further, the vibration isolation support also comprises: the upper plate is fixedly connected with the corresponding upper pier; the rubber shock insulation cushion is arranged below the upper plate; the lower plate is arranged below the rubber shock insulation pad and is fixedly connected with the corresponding lower pier; furthermore, the vibration isolation support also comprises a plurality of dampers which are arranged in the rubber vibration isolation cushion and positioned between the upper plate and the lower plate.
Furthermore, the dampers are divided into two damper groups, one damper group comprises P dampers arranged at intervals along a first horizontal direction, and each upright column group comprises Q dampers arranged at intervals along a second horizontal direction; the first horizontal direction and the second horizontal direction are vertical to each other, P and Q are both larger than 1 and are both integers.
Furthermore, the shock insulation support further comprises a guide rod, the guide rod is located between the upper plate and the lower plate, the rubber shock insulation cushion is sleeved on the guide rod, the guide rod is connected with one of the upper plate and the lower plate, and the guide rod is movably arranged along the vertical direction relative to the other one of the upper plate and the lower plate so as to guide and limit the rubber shock insulation cushion.
Furthermore, the overground layer comprises an overground layer and an overground layer, the overground layer comprises a main transformer chamber, a 110kV GIS chamber and a 10kV parallel reactor, and the overground layer comprises a 220kV GIS chamber and an auxiliary room; the underground layer is a cable interlayer for laying cables.
Further, the transformer substation structure includes the shock insulation ditch that encircles the week side setting of transformer substation's main part, and the shock insulation ditch comprises shock insulation ditch wall and the shock insulation ditch lid that sets up in shock insulation ditch wall top and with the interval of shock insulation ditch wall, and wherein, the shock insulation ditch wall is connected with lower pier, and the shock insulation ditch lid is connected with upper pier.
Further, the transformer substation structure includes that the week side that encircles the transformer substation main part sets up and is located the escape canal of the one side of keeping away from the transformer substation main part of shock insulation ditch, and the escape canal wall that the escape canal by and the escape canal lid of setting in the escape canal wall top are constituteed.
According to another aspect of the invention, a seismic isolation performance evaluation method is provided for evaluating the seismic isolation performance of the transformer substation structure, and the seismic isolation performance evaluation method comprises the following steps: establishing a numerical model of a transformer substation structure on analysis software; carrying out modal analysis on the numerical model; and (3) selecting an acceleration time-course curve of natural seismic waves recorded by actual strong earthquake and an acceleration time-course curve of simulated seismic waves simulated by manual simulation according to the category of the building site where the transformer substation structure is located and the intensity of the earthquake by adopting a time-course analysis method, and inputting the acceleration time-course curve of the natural seismic waves and the acceleration time-course curve of the simulated seismic waves into a numerical model to perform structural analysis.
By applying the technical scheme of the invention, the transformer substation structure comprises a transformer substation main body, wherein the transformer substation main body comprises: an overground layer and an underground layer positioned below the overground layer; each upright column comprises an upper buttress and a lower buttress which are respectively positioned in the overground layer and the underground layer, and a shock insulation support is arranged between each upper buttress and the corresponding lower buttress; wherein at least part of the seismic isolation support has elasticity in the vertical direction so as to reduce the transmission of vibration between the overground layer and the underground layer. Therefore, the invention carries out shock insulation design between the overground layer and the underground layer of the transformer substation main body in a mode of arranging the shock insulation support, meets the selection of the total-station electrical equipment of the indoor transformer substation structure in the high-earthquake region, and solves the problem that the shock absorption technology in the prior art is not suitable for the electrical equipment in the indoor transformer substation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a top view of an embodiment of a substation structure according to the invention;
fig. 2 shows a cross-sectional view of a column, seismic isolation trench and drainage trench of a substation structure according to the present invention;
FIG. 3 shows a cross-sectional view of a seismic mount of the mast shown in FIG. 2;
fig. 4 shows a schematic view of the state of the substation structure according to the invention in a first order mode shape;
fig. 5 shows a state diagram of a numerical model of a substation structure according to the invention in a second order mode shape;
fig. 6 shows a state diagram of a numerical model of a substation structure according to the invention in a third mode shape.
Wherein the figures include the following reference numerals:
10. an above-ground layer; 11. a first layer above ground; 12. the second layer above the ground;
20. an underground layer;
30. a foundation;
40. a column; 41. an upper buttress; 42. a lower buttress; 43. a shock insulation support; 431. an upper plate; 432. a rubber shock-isolation cushion; 433. a lower plate; 434. a guide bar; 44. a pillar;
50. shock insulation ditch; 51. a shock insulation trench cover; 52. a seismic isolation trench wall;
60. a drainage ditch; 61. a drain cover; 62. a drainage ditch wall;
70. and (4) the ground.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 6, the present invention provides a substation structure including a substation main body, the substation main body including: an overground layer 10 and an underground layer 20 located below the overground layer 10; each upright post 40 comprises an upper buttress 41 and a lower buttress 42 which are respectively positioned in the overground layer 10 and the underground layer 20, and a vibration isolation support 43 is arranged between each upper buttress 41 and the corresponding lower buttress 42; wherein at least a portion of the seismic isolation mounts 43 is vertically elastic to mitigate the transmission of vibrations between the above-ground layer 10 and the underground layer 20.
Therefore, the invention carries out shock insulation design between the overground layer 10 and the underground layer 20 of the transformer substation main body by arranging the shock insulation support 43, meets the selection of the total-station electrical equipment of the indoor transformer substation structure in the high-earthquake region, and solves the problem that the shock absorption technology in the prior art is not suitable for the electrical equipment in the indoor transformer substation.
As shown in fig. 2, each of the columns 40 further includes a pillar 44 located above the upper pier 41 and extending through the entire ground level 10, and adjacent two columns 40 are connected by a cross beam.
As shown in fig. 1 and 4 to 6, two adjacent columns 40 are connected by a cross beam.
As shown in fig. 1, the plurality of columns 40 are divided into M column groups arranged at intervals in the first horizontal direction, and each column group includes N columns 40 arranged at intervals in the second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular to each other, M and N are both larger than 1 and are integers.
As shown in fig. 2 and 3, the seismic isolation mount 43 further includes: an upper plate 431 fixedly connected to the corresponding upper pier 41; a rubber vibration-isolating pad 432 disposed below the upper plate 431; the lower plate 433 is arranged below the rubber shock-insulation pad 432 and is fixedly connected with the corresponding lower buttress 42; further, the seismic isolation mount 43 further includes a plurality of dampers disposed within the rubber seismic isolation pad 432 between the upper plate 431 and the lower plate 433.
Preferably, the plurality of dampers are divided into two damper groups, one damper group comprises P dampers arranged at intervals along a first horizontal direction, and each upright column group comprises Q dampers arranged at intervals along a second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular to each other, P and Q are both larger than 1, and P and Q are both integers.
Specifically, each of the vibration-isolating mounts 43 includes six dampers.
As shown in fig. 3, the seismic isolation mount 43 further includes a guide bar 434, the guide bar 434 is located between the upper plate 431 and the lower plate 433, the rubber seismic isolation pad 432 is fitted over the guide bar 434, the guide bar 434 is connected to one of the upper plate 431 and the lower plate 433, and the guide bar 434 is movably disposed in a vertical direction with respect to the other of the upper plate 431 and the lower plate 433 to guide and limit the rubber seismic isolation pad 432.
As shown in fig. 4 to 6, the substation main body is disposed on the foundation 30 above the ground 70, the plan view of the substation main body is arranged in an inverted "L" shape, the height of the overground layer 10 is 13.5 m, the height of the underground layer is 4 m, and sixty-nine columns 40 are shared.
The overground layer 10 comprises an overground layer 11 and an overground second layer 12 positioned above the overground layer 11, the overground first layer 11 comprises a main transformer chamber, a 110kV GIS chamber and a 10kV parallel reactor, and the overground second layer 12 comprises a 220kV GIS chamber and an auxiliary room; the subterranean layer 20 is a cable interlayer for laying cables.
Specifically, the GIS chamber is a gas insulated fully-enclosed combined electrical apparatus chamber.
As shown in fig. 1 and 2, the substation structure includes a seismic isolation trench 50 disposed around the periphery of the substation body, the seismic isolation trench 50 is composed of a seismic isolation trench wall 52 and a seismic isolation trench cover 51 disposed above the seismic isolation trench wall 52 and spaced from the seismic isolation trench wall 52, wherein the seismic isolation trench wall 52 is connected to the lower support pillar 42, and the seismic isolation trench cover 51 is connected to the upper support pillar 41.
Specifically, the width L1 of the seismic isolation groove 50 is 600mm.
As shown in fig. 1 and 2, the substation structure includes a drainage ditch 60 disposed around the periphery of the substation body and located on a side of the seismic isolation ditch 50 remote from the substation body, the drainage ditch 60 being composed of a drainage ditch wall 62 and a drainage ditch cover 61 disposed above the drainage ditch wall 62; wherein a portion of the drain 60 is located above the ground 70 and a field portion is located below the ground 70.
Specifically, the width of the drainage ditch 60 is smaller than that of the seismic isolation ditch 50, and the distance L2 between the drainage ditch cover 61 and the drainage ditch wall 62 is less than or equal to 20mm.
The invention also provides a seismic isolation performance evaluation method for evaluating the seismic isolation performance of the transformer substation structure, which comprises the following steps: establishing a numerical model of a transformer substation structure on analysis software; carrying out modal analysis on the numerical model; and (3) selecting an acceleration time-course curve of natural seismic waves recorded by actual strong earthquake and an acceleration time-course curve of simulated seismic waves simulated by manual simulation according to the category of the building site where the transformer substation structure is located and the intensity of the earthquake by adopting a time-course analysis method, and inputting the acceleration time-course curve of the natural seismic waves and the acceleration time-course curve of the simulated seismic waves into a numerical model to perform structural analysis.
Specifically, in the seismic isolation performance evaluation method of the present invention:
(1) Analysis software
The method is completed by adopting a comprehensive disaster prevention simulation CIM/BIM platform which is a 64-bit platform, and the comprehensive disaster simulation analysis of the building is carried out by a GPU + opencl parallel computing technology, wherein the evaluation and identification of the earthquake resistance of the single building is a sub-module of the comprehensive disaster prevention simulation platform.
(2) Finite element model
The numerical model of the transformer substation structure is a seismic isolation model, all nodes at the bottom of the seismic isolation support 43 below the transformer substation structure need to be constrained during analysis of the seismic isolation model, and the model and parameters of the seismic isolation support 43 are input into software.
The long axis direction (namely, the first horizontal direction) of a numerical model of the substation structure is set to be the X direction, the short axis direction (namely, the second horizontal direction) is set to be the Y direction, and the vertical direction is set to be the Z direction.
The damper is an oil damper, the damping coefficient of the oil damper is 1400 kN.m/s, and the damping index is 0.3.
Modal analysis is carried out on the vibration isolation model of the indoor transformer substation structure in the high-seismic intensity area, and the frequency of the vibration isolation model and the first, second and third vibration modes shown in the figures 4 to 6 are obtained, wherein when the frequency is calculated by the vibration isolation model, 100% equivalent horizontal stiffness of the vibration isolation support is used.
(3) Selection and adjustment of seismic waves
When a time-course analysis method is adopted, the acceleration time-course curve of the natural seismic waves recorded by actual strong earthquake and the acceleration time-course curve of the simulated seismic waves artificially simulated are selected according to the type of the building site where the transformer substation structure is located and the designed seismic intensity, wherein the number of the acceleration time-course curves of the natural seismic waves recorded by the actual strong earthquake is not less than two thirds of the total number of the acceleration time-course curves, and the average seismic influence coefficient curve of a plurality of groups of acceleration time-course curves is statistically consistent with the seismic influence coefficient curve adopted by the mode decomposition reaction spectrum method.
According to the specification, five groups of acceleration time-course curves of natural seismic waves recorded by actual strong earthquake and two groups of artificially simulated acceleration time-course curves of simulated seismic waves are selected for structural analysis.
All acceleration time-course curves are respectively input according to unidirectional horizontal input in X and Y directions, and the peak acceleration of each input excitation is 400cm/s according to 9-degree (0.40 g) earthquake fortification regulation of 5.1.2 in building earthquake resistance design Specification GB50011-2010 2 。
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the transformer substation structure comprises a transformer substation main body, wherein the transformer substation main body comprises: an overground layer 10 and an underground layer 20 located below the overground layer 10; each upright post 40 comprises an upper buttress 41 and a lower buttress 42 which are respectively positioned in the overground layer 10 and the underground layer 20, and a vibration isolation support 43 is arranged between each upper buttress 41 and the corresponding lower buttress 42; wherein at least a portion of the seismic isolation mounts 43 is vertically elastic to mitigate the transmission of vibrations between the above-ground layer 10 and the underground layer 20. Therefore, the seismic isolation support 43 is arranged to isolate the above-ground layer 10 and the underground layer 20 of the transformer substation main body, so that the selection of the total-station electrical equipment of an indoor transformer substation structure in a high-seismic region is met, and the problem that the damping technology in the prior art is not suitable for the electrical equipment in the indoor transformer substation is solved.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A substation structure, comprising a substation main body, the substation main body comprising:
an overground layer (10) and an underground layer (20) located below the overground layer (10);
the plurality of columns (40), each column (40) comprises an upper buttress (41) and a lower buttress (42) which are respectively positioned in the overground layer (10) and the underground layer (20), and the seismic isolation support (43) is arranged between each upper buttress (41) and the corresponding lower buttress (42);
wherein at least a portion of the seismic isolation mount (43) is vertically resilient to mitigate the transmission of vibrations between the above-ground layer (10) and the underground layer (20).
2. The substation structure according to claim 1, wherein the plurality of posts (40) is divided into M sets of posts arranged at intervals in the first horizontal direction, each set of posts comprising N posts (40) arranged at intervals in the second horizontal direction; the first horizontal direction and the second horizontal direction are vertical to each other, M and N are both larger than 1 and are both integers.
3. Substation structure according to claim 1, characterized in that the seismic isolation bearing (43) further comprises:
the upper plate (431) is fixedly connected with the corresponding upper buttress (41);
a rubber vibration isolation pad (432) disposed below the upper plate (431);
and the lower plate (433) is arranged below the rubber shock insulation pad (432) and is fixedly connected with the corresponding lower buttress (42).
4. Substation structure according to claim 3, characterized in that said seismic support (43) further comprises a plurality of dampers arranged within said rubber seismic pad (432) between said upper plate (431) and said lower plate (433).
5. Substation structure according to claim 4,
the plurality of dampers are divided into two damper groups, one damper group comprises P dampers arranged at intervals along a first horizontal direction, and each upright column group comprises Q dampers arranged at intervals along a second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular to each other, P and Q are both larger than 1, and P and Q are both integers.
6. Substation structure according to claim 3, characterized in that the seismic mount (43) further comprises a guide bar (434), the guide bar (434) being located between the upper plate (431) and the lower plate (433), the rubber seismic pad (432) being sleeved on the guide bar (434), the guide bar (434) being connected to one of the upper plate (431) and the lower plate (433), and the guide bar (434) being movably arranged in a vertical direction with respect to the other of the upper plate (431) and the lower plate (433) for guiding and limiting the rubber seismic pad (432).
7. Substation structure according to any one of the claims 1 to 6,
the overground layer (10) comprises an overground layer (11) and an overground layer II (12), the overground layer I (11) comprises a main transformer chamber, a 110kV GIS chamber and a 10kV parallel reactor, and the overground layer II (12) comprises a 220kV GIS chamber and an auxiliary room;
the underground layer (20) is a cable interlayer for laying cables.
8. Substation structure according to any of the claims 1 to 6, characterized in that the substation structure comprises a seismic isolation trench (50) arranged around the circumference of the substation body, the seismic isolation trench (50) consisting of a seismic isolation trench wall (52) and a seismic isolation trench cover (51) arranged above the seismic isolation trench wall (52) and spaced apart from the seismic isolation trench wall (52), wherein the seismic isolation trench wall (52) is connected to the lower buttress (42) and the seismic isolation trench cover (51) is connected to the upper buttress (41).
9. The substation structure according to claim 8, characterized in that the substation structure comprises a drainage ditch (60) provided around the periphery of the substation body and located on a side of the seismic isolation ditch (50) remote from the substation body, the drainage ditch (60) being composed of a drainage ditch wall (62) and a drainage ditch cover (61) provided above the drainage ditch wall (62).
10. A seismic isolation performance evaluation method for evaluating seismic isolation performance of the substation structure according to any one of claims 1 to 9, the seismic isolation performance evaluation method comprising:
establishing a numerical model of the transformer substation structure on analysis software;
performing modal analysis on the numerical model;
and selecting an acceleration time-course curve of natural seismic waves recorded by actual strong earthquake and an acceleration time-course curve of simulated seismic waves simulated by manual simulation according to the category of the building site of the transformer substation structure and the intensity of the earthquake by adopting a time-course analysis method, and inputting the acceleration time-course curve of the natural seismic waves and the acceleration time-course curve of the simulated seismic waves into the numerical model so as to perform structural analysis.
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