Method and device for determining electrical equipment configuration scheme of high-voltage power distribution device

Abstract

The present invention provides a method and device for determining an electrical equipment configuration scheme of a high-voltage power distribution device. The method includes: obtaining the surrounding environment information, target incoming line scale, and target outgoing line scale of the target high-voltage power distribution device; determining a target wiring scheme for N spacer strings according to the surrounding environment information, target incoming line scale, and target outgoing line scale, where N is a positive integer, and one of the N spacer strings is a space spacer string; configuring the electrical equipment of the N spacer strings according to the target wiring scheme. The solution of the present invention can use the space spacer string to achieve regular outgoing lines of the 500 kV power distribution device, reducing the floor area and the outgoing line direction.

Description

Technical Field

[0001] The present invention relates to the technical field of substation engineering design, and particularly to a method and device for determining an electrical equipment configuration scheme of a high-voltage distribution device. Background Art

[0002] With the improvement of social economy and the development of power technology, the population density is gradually increasing, and the land costs in various regions are becoming more expensive; the enhancement of the power grid has led to an increasing number of large-scale 500 kV substations. At the same time, the requirements for the reliability and operation and maintenance convenience of equipment in substations are also getting higher and higher. Due to the limitations of the operating conditions of 500 kV distribution devices, the arrangement form of HGIS combined electrical equipment for 500 kV distribution devices is becoming more and more popular. In the existing general design of 500 kV distribution devices, when the number of outgoing line circuits is too large, problems such as the occupation of upper cross lines and top cross lines will cause the inability to complete the outgoing line of HGIS equipment bays, which limits the outgoing line scale and quantity of 500 kV HGIS distribution devices. For the scale of 4 incoming lines and 8 outgoing lines, the outgoing line direction of the distribution device cannot be reduced; for the scale of 4 incoming lines and 10 outgoing lines, the distribution device cannot achieve regular outgoing lines and has a large longitudinal floor area. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method and device for determining an electrical equipment configuration scheme of a high-voltage distribution device, which can use a spatial bay string to achieve regular outgoing lines of a 500 kV distribution device, reduce the floor area and the outgoing line direction.

[0004] To solve the above technical problem, the technical solution of the present invention is as follows:

[0005] A method for determining an electrical equipment configuration scheme of a high-voltage distribution device includes:

[0006] Obtaining the surrounding environment information, the target incoming line scale, and the target outgoing line scale of the target high-voltage distribution device;

[0007] Determining a target wiring scheme for N bay strings according to the surrounding environment information, the target incoming line scale, and the target outgoing line scale; where N is a positive integer; one of the N bay strings includes a spatial bay string;

[0008] Configuring the electrical equipment of the N bay strings according to the target wiring scheme.

[0009] Optionally, determining a target wiring scheme for N bay strings according to the surrounding environment information, the target incoming line scale, and the target outgoing line scale includes:

[0010] Determining the target incoming line direction and the target outgoing line direction of the target high-voltage distribution device according to the surrounding environment information of the target high-voltage distribution device;

[0011] Determine the number N of the spacer strings according to the target incoming line scale and the target outgoing line scale;

[0012] Determine the target wiring scheme of the N spacer strings according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of the spacer strings.

[0013] Optionally, determining the target wiring scheme of the N spacer strings according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of the spacer strings includes:

[0014] Determine the preliminary planning scheme of the N spacer strings according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of the spacer strings;

[0015] Arrange the incoming and outgoing lines of the N spacer strings according to the preliminary planning scheme to obtain the target wiring scheme.

[0016] Optionally, determining the preliminary planning scheme of the N spacer strings according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of the spacer strings includes:

[0017] Determine the position of the half spacer string that cannot have an outgoing line according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of the spacer strings;

[0018] Determine the position of a single-phase spacer string according to the number N of the spacer strings and the position of the main transformer;

[0019] Determine the outgoing line path direction of the N spacer strings with double-circuit on the same tower according to the position of the half spacer string that cannot have an outgoing line, the position of a single-phase spacer string and the positions of the remaining spacer strings;

[0020] Determine the layout scheme of the fire protection facilities according to the position of a single-phase spacer string;

[0021] Obtain the preliminary planning scheme of the N spacer strings according to the outgoing line path direction of the N spacer strings with double-circuit on the same tower and the layout scheme of the fire protection facilities.

[0022] Optionally, determining the outgoing line path direction of the N spacer strings with double-circuit on the same tower according to the position of the half spacer string that cannot have an outgoing line, the position of a single-phase spacer string and the positions of the remaining spacer strings includes:

[0023] The half spacer string that cannot have an outgoing line goes out through the single-phase spacer string, and the remaining spacer strings go out according to the principle that the two outgoing line directions in one spacer string are different and only one incoming line and one outgoing line or two outgoing lines are allowed in one spacer string, so as to obtain the outgoing line path direction of the N spacer strings with double-circuit on the same tower.

[0024] Optionally, according to the preliminary planning scheme, the incoming and outgoing lines of the N interval strings are arranged to obtain the target wiring scheme, including:

[0025] According to the outgoing line path direction of the double-circuit on the same tower of the preliminary planning scheme, the upper crossing lines and top-crossing lines of the incoming and outgoing lines of each circuit of each interval string are arranged, so that the N interval strings and the target incoming lines of the target incoming line scale and the target outgoing lines of the target outgoing line scale form a complete circuit, and the target wiring scheme is obtained.

[0026] The present invention also provides a high-voltage power distribution device for arranging electrical equipment, wherein the high-voltage power distribution device is the high-voltage power distribution device as described above, comprising:

[0027] A tic-tac-toe structure, wherein the tic-tac-toe structure stands upright on the ground and has a certain preset height;

[0028] The interval strings are arranged in the squares of the tic-tac-toe structure, and the interval strings are connected to the main transformer and the line tower through lines.

[0029] Optionally, the enclosed space formed by two adjacent squares in the longitudinal direction of the tic-tac-toe structure corresponds to a spacing string, and the spacing string is set on the ground.

[0030] Optionally, the interval string is connected to the main transformer via a main transformer incoming line, or the interval string is connected to the line tower via an outgoing line.

[0031] Optionally, the interval string is connected to the main transformer incoming and outgoing lines through an upper span line, a top span line and a busbar, and the upper span line, the top span line and the busbar are passed through the criss-cross structure.

[0032] The above solution of the present invention includes at least the following beneficial effects:

[0033] The above scheme of the present invention obtains the surrounding environment information, target incoming line scale and target outgoing line scale of the target high-voltage power distribution device; determines the target wiring scheme of N interval strings according to the surrounding environment information, target incoming line scale and target outgoing line scale; wherein N is a positive integer; the N interval strings include a space interval string; and configures the electrical equipment of the N interval strings according to the target wiring scheme. The space interval string can be used to realize the regular outgoing line of the 500kV power distribution device, reducing the floor space and the outgoing line direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flow chart of a method for determining an electrical equipment configuration scheme of a high-voltage power distribution device according to an embodiment of the present invention;

[0035] Figure 2It is the floor plan of the conventional HGIS complete set of equipment in the embodiment of the present invention;

[0036] Figure 3 It is the floor plan of the semi-C type HGIS complete set of equipment in the embodiment of the present invention;

[0037] Figure 4 It is the floor plan of the conventional 8 outgoing lines in the embodiment of the present invention;

[0038] Figure 5 It is the floor plan of the conventional 10 outgoing lines in the embodiment of the present invention;

[0039] Figure 6 It is the partial enlarged view of the irregular lateral outgoing line among the conventional 10 outgoing lines in the embodiment of the present invention;

[0040] Figure 7 It is the schematic diagram of the position of the interval string where no outgoing line is possible in the embodiment of the present invention;

[0041] Figure 8 It is the floor plan of the preliminary planning scheme of 4 transforming into 10 lines in the embodiment of the present invention;

[0042] Figure 9 It is the floor plan of the target wiring scheme of 4 transforming into 10 lines in the embodiment of the present invention;

[0043] Figure 10 It is the floor plan of the HGIS configuration of 4 transforming into 10 lines in the embodiment of the present invention;

[0044] Figure 11 It is the sectional view of the HGIS high-voltage distribution device in the embodiment of the present invention;

[0045] Figure 12 It is the floor plan of the preliminary planning scheme of 4 transforming into 8 lines in the embodiment of the present invention;

[0046] Figure 13 It is the floor plan of the target wiring scheme of 4 transforming into 8 lines in the embodiment of the present invention;

[0047] Figure 14 It is the floor plan of the HGIS configuration of 4 transforming into 8 lines in the embodiment of the present invention;

[0048] Explanation of reference numerals:

[0049] 1. Grid-like structure; 2. Spacing string; 31. First main transformer; 32. Second main transformer; 33. Third main transformer; 34. Fourth main transformer; 4. Line tower; 5. Main transformer incoming line; 51. First main transformer incoming line; 52. Second main transformer incoming line; 53. Third main transformer incoming line; 54. Fourth main transformer incoming line; 6. Outgoing line; 61. First outgoing line; 62. Second outgoing line; 63. Third outgoing line; 64. Fourth outgoing line; 65. Fifth outgoing line; 66. Sixth outgoing line; 67. Seventh outgoing line; 68. Eighth outgoing line; 69. Ninth outgoing line; 60. Tenth outgoing line; 71. Unavailable outgoing line spacing string; 72. Space spacing string; 81. Fire pump house; 82. Water storage tank; 83. 500kV protection cubicle; 84. Fire pipeline; 85. Main transformer reactive power; 86. Synchronous condenser main plant building; 87. Comprehensive pump house; 9. Occupied main busbar; 91. Busbar; 611. First outgoing line overcrossing line; 612. First outgoing line top cross line; 622. Second outgoing line top cross line; 631. Third outgoing line overcrossing line; 641. Fourth outgoing line overcrossing line; 651. Fifth outgoing line overcrossing line; 652. Fifth outgoing line top cross line; 661. Sixth outgoing line overcrossing line; 662. Sixth outgoing line top cross line; 671. Seventh outgoing line overcrossing line; 681. Eighth outgoing line overcrossing line; 691. Ninth outgoing line overcrossing line; 692. Ninth outgoing line top cross line; 601. Tenth outgoing line overcrossing line; 602. Tenth outgoing line top cross line. Detailed implementation manners

[0050] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0051] To better explain the present invention, the background technology of the high-voltage distribution device will be introduced below.

[0052] Due to the use condition limitations of the 500kV distribution device, the 500kV distribution device usually adopts the layout form of HGIS combined electrical equipment. The HGIS is a new type of high-voltage switchgear between GIS and AIS. The existing 500kV HGIS distribution device design schemes mainly adopt 2 types of equipment forms, namely conventional HGIS complete sets of equipment or semi-C type HGIS complete sets of equipment. The conventional HGIS complete sets of equipment are as Figure 2 shown, with a longitudinal floor area of 84500mm; the semi-C type HGIS complete sets of equipment are as Figure 3 shown, with a longitudinal floor area of 76500mm. It can be seen that the semi-C type HGIS complete sets of equipment are significantly superior to the conventional HGIS complete sets of equipment in terms of the floor area of the distribution device, so they are the currently more mainstream equipment.

[0053] In the design scheme of the 500 kV HGIS distribution device, as Figure 4 shown, when the scale is 4 in and 8 out, two equipment forms, namely conventional and semi-C type, can both achieve the design of the 4 in and 8 out scheme. However, at least one outgoing line is required and it is achieved through the lateral outgoing line method, that is, it is necessary to pass through the upper cross line and the top cross line in the distribution device to complete the incoming and outgoing line scheme design in three directions of the distribution device area. For the substation design schemes with restrictions on the line corridor, the need to install a bus high reactance and a synchronous condenser room in the substation, etc., they cannot be satisfied, especially when there is no expansion direction reserved on one side of the distribution device alone.

[0054] When the scale is 4 in and 10 out, the semi-C type HGIS complete set of equipment cannot achieve the design of this scale, so only the conventional HGIS complete set of equipment can be used. As Figure 5 shown, the conventional HGIS complete set of equipment needs to adopt the "L-shaped split type" irregular lateral outgoing line form to achieve the design of the distribution device scheme. It is necessary to split the complete interval string (the interval string refers to a kind of interval, which means some closely connected parts with certain common functions in the substation. The electrical interval in the substation refers to a complete circuit, including circuit breakers, disconnectors, instrument transformers, lightning arresters, etc. Any electrical unit with perfect functions is called an interval, such as incoming and outgoing line intervals, busbar equipment intervals) into more than half a string plus less than half a string of HGIS equipment. Among them, more than half a string is arranged conventionally, and the less than half a string of equipment is arranged vertically with other equipment. At the same time, the 500 kV pipe busbar in this interval string is used as a transition conductor to realize the outgoing line, and the more than half a string of HGIS equipment needs to perform a reverse jump through the upper cross line to realize the outgoing line scheme design. As Figure 6 shown, this results in inconsistent arrangements between the less than half a string of HGIS equipment and other interval HGIS equipment, and occupies a separate 500 kV main busbar, resulting in potential safety hazards such as accidental power outage and abnormal live working for production operation and maintenance personnel during normal work. At the same time, due to the use of conventional HGIS complete set of equipment, the longitudinal dimension of the distribution device increases by 8000 mm compared with the semi-C type HGIS complete set of equipment, resulting in an increase in the longitudinal floor area; the layout positions of the 500 kV protection cubicles are too scattered, resulting in an increase in the consumption of power and control cables; the fire pump rooms and water storage tanks required for 4 groups of 500 kV main transformers (each group has three phases, a total of 12 units) cannot be arranged in reasonable positions; the "same name string" phenomenon is likely to occur in the side interval string, resulting in the simultaneous power outage of double-circuit lines during maintenance.

[0055] Based on the above problems, the present invention provides a design scheme of a 500 kV HGIS distribution device adopting a semi-C type HGIS equipment layout.

[0056] As Figure 1As shown in the figure, an embodiment of the present invention proposes a method for determining an electrical equipment configuration scheme of a high-voltage distribution device, including:

[0057] Step 11: Obtain the surrounding environment information, target incoming line scale, and target outgoing line scale of the target high-voltage distribution device;

[0058] Here, the surrounding environment information mainly refers to facilities such as the synchronous condenser main plant 86 that affect the outgoing lines around the high-voltage distribution device, and the positional relationship between the main transformer and the high-voltage distribution device. The target incoming line scale is the number of incoming lines connecting the main transformer and the high-voltage distribution device, generally 4 incoming lines. The target outgoing line scale is the number of outgoing lines of the high-voltage distribution device, generally 8 outgoing lines or 10 outgoing lines.

[0059] Step 12: Determine the target wiring scheme for N spacer strings according to the surrounding environment information, target incoming line scale, and target outgoing line scale; where N is a positive integer; one of the N spacer strings is a spatial spacer string;

[0060] Here, in a wiring schematic of a distribution device as shown in Figure 7 the electrical equipment corresponding to a grid space enclosed by the grid-shaped structure 1 constitutes half of the spacer string 2. Two adjacent half spacer strings in the longitudinal direction form a spacer string 2. In a 500kV HGIS high-voltage distribution device, the main equipment in the spacer string is HGIS. The target wiring scheme for the N spacer strings is the line connection scheme for the N spacer strings to achieve the target number of incoming lines and the target number of outgoing lines with the main transformer.

[0061] Step 13: Configure the electrical equipment of the N spacer strings according to the target wiring scheme.

[0062] Here, according to the connection methods of the upper cross line and the top hip line of the spacer string in the target wiring scheme, arrange HGIS complete sets of equipment, incoming and outgoing line PTs and arresters, 500kV main busbars, and related auxiliary building facilities (rain deluge valve rooms, fire fighting tools), etc. In this application, the electrical equipment configuration scheme of the invented high-voltage distribution device can meet the use of semi-C type HGIS complete sets of equipment for large-scale outgoing lines, solve the technical problem that the 4-line 10-transformer scale distribution device in the prior art cannot use semi-C type HGIS complete sets of equipment, and minimize the floor area of the distribution device.

[0063] In this embodiment, a 500kV HGIS distribution device scheme design using a spatial spacer string 72 to achieve outgoing lines is provided. The spatial spacer string 72 means that no electrical equipment is arranged in the spacer string 2.

[0064] Through the design of the outgoing line scheme of the space spacer string 72, by using the upper cross line and the top cross line of the space spacer string, the current situation of simultaneously outgoing lines in three directions to the distribution device area when the scale is changed from 4 to 8 lines is solved, leaving an expansion direction for the overall design of the substation, and solving the design scheme where the layout is restricted due to the line corridor, and the installation of bus high reactance, synchronous condenser room, etc. in the substation is impossible.

[0065] When the scale is changed from 4 to 10 lines, through the design of the outgoing line scheme of the space spacer string, the unified layout form of the 500kV HGIS equipment and the unified numbering of the 500kV main bus are maintained, reducing the normal workload of production operation and maintenance personnel and avoiding the potential safety hazards brought by the operation of unconventional equipment.

[0066] Through the design of the outgoing line scheme of the space spacer string, the distribution device scheme design with a scale of 4 to 10 lines can be realized by using semi-C type HGIS complete sets of equipment, solving the problem of the floor area of the longitudinal dimension of the distribution device; by merging the 500kV protection cubicle 83 and arranging it under the space spacer string, the power and control cables can be laid centrally, effectively saving the cable usage; by arranging the fire pump room 81 and the water storage tank 82 under the space spacer string, the problem of the scattered layout of the fire pipelines for 12 500kV main transformers is solved.

[0067] In an optional embodiment of the present invention, step 12 may include:

[0068] Step 121, according to the surrounding environment information of the target high-voltage distribution device, determine the target incoming line direction and the target outgoing line direction of the target high-voltage distribution device;

[0069] Step 122, according to the target incoming line scale and the target outgoing line scale, determine the number N of the spacer strings;

[0070] Step 123, according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of the spacer strings, determine the target wiring scheme of the N spacer strings.

[0071] In this embodiment, according to whether there are facilities such as factory buildings around the high-voltage distribution device, whether there are restrictions on the line path corridor, and the position of the main transformer, determine two or three directions where the target high-voltage distribution device 2 can outgoing lines, that is, the target outgoing line directions. Determine the direction of the main transformer as the target incoming line direction. According to the target incoming line scale and the target outgoing line scale, obtain the total number of incoming and outgoing line loops, and divide the total number of incoming and outgoing line loops by 2 to get the required number of spacer strings. In this application, on the basis of the required number of spacer strings for incoming and outgoing lines, add one more space spacer string, and finally get a total of N spacer strings. Taking the example of 4 to 10 lines, the target incoming line scale is 4, the target outgoing line scale is 10, and the total number of incoming and outgoing line loops is 14, so 7 spacer strings are needed. Add one more space spacer string, and finally 8 spacer strings, and N is equal to 8.

[0072] In this application, the design of using spatial spacer strings can solve technical problems such as Figure 7 shown, where there is a technical problem that half of the spacer string cannot lead out when there is no spatial spacer string. The specific solution will be discussed in detail below.

[0073] In an alternative embodiment of the present invention, step 123 may include:

[0074] Step 1231, determine a preliminary planning scheme for N spacer strings according to the target incoming line scale, target outgoing line scale, target incoming line direction, target outgoing line direction, and the number N of spacer strings;

[0075] Step 1232, arrange the incoming and outgoing lines of the N spacer strings according to the preliminary planning scheme to obtain the target wiring scheme.

[0076] In this embodiment, taking 4 incoming lines and 10 outgoing lines as an example, the preliminary planning scheme for the N spacer strings is as Figure 8 shown, which defines the outgoing line direction of each spacer string and the positions of the protection cubicle, fire pump room, and water storage tank. The target wiring scheme is as Figure 9 shown, which plans the over-crossing line and top-crossing line schemes of each outgoing line loop in each spacer string.

[0077] In an alternative embodiment of the present invention, step 1231 may include:

[0078] Step 12311, determine the position of the half spacer string that cannot lead out according to the target incoming line scale, target outgoing line scale, target incoming line direction, target outgoing line direction, and the number N of spacer strings;

[0079] Step 12312, determine the position of a spatial spacer string according to the number N of spacer strings and the position of the main transformer;

[0080] Step 12313, determine the outgoing line path direction of the N spacer strings with double circuits on the same tower according to the position of the half spacer string that cannot lead out, the position of a spatial spacer string, and the positions of the remaining spacer strings;

[0081] Step 12314, determine the layout scheme of the fire protection facilities according to the position of a spatial spacer string;

[0082] Step 12315, obtain the preliminary planning scheme for the N spacer strings according to the outgoing line path direction of the N spacer strings with double circuits on the same tower and the layout scheme of the fire protection facilities.

[0083] In this embodiment, as Figure 7As shown, without setting a spatial spacer string, since both the left and right spacer strings are occupied, there is half a spacer string that cannot be led out. Therefore, it is first necessary to determine the position of this half spacer string that cannot be led out. Then, in combination with the position of the main transformer, determine the position of a spatial spacer string such that the spatial spacer string is set in the middle of the main transformer. As Figure 8 shown, through the proposed outgoing line direction, plan the outgoing line path direction of the double-circuit on the same tower of the 500 kV line. Among them, the half spacer string that could not be led out originally is led out through the spatial spacer string.

[0084] Next, arrange fire protection facilities at the position of the spatial spacer string. The fire protection facilities include: a protection cubicle, a fire pump room, and a water storage tank. Set up a protection cubicle at the spatial spacer string so that the 500 kV protection cubicle is in the middle of the 500 kV HGIS distribution device, which can centrally lay power and control cables, effectively saving the amount of cable used. At the same time, the fire pump room and the water storage tank are also arranged at the spatial spacer string, and their fire pipelines can be evenly distributed to multiple groups of main transformers. Finally, obtain the preliminary planning scheme of N spacer strings as Figure 8 shown.

[0085] In an alternative embodiment of the present invention, step 12313 may include:

[0086] Step 123131, the half spacer string that cannot be led out is led out through the spatial spacer string, and the remaining spacer strings are led out according to the principle that the two outgoing line directions in one spacer string are different and only one incoming and one outgoing or two outgoings are allowed in one spacer string, to obtain the outgoing line path direction of the double-circuit on the same tower of the N spacer strings.

[0087] In this embodiment, according to relevant specifications, one spacer string completes one incoming and one outgoing, or two outgoing lines; and one spacer string cannot lead out in one direction. Therefore, design the outgoing line path direction of the double-circuit on the same tower as Figure 8 shown. Make the HGIS equipment in each spacer string consistent, avoiding the problems of inconvenient maintenance and potential safety hazards.

[0088] In an alternative embodiment of the present invention, step 1232 may include:

[0089] Step 12321, according to the outgoing line path direction of the double-circuit on the same tower of the preliminary planning scheme, arrange the overhead lines and top-span lines for the incoming and outgoing lines of each circuit of each spacer string, so that the N spacer strings and the target incoming lines of the target incoming line scale and the target outgoing lines of the target outgoing line scale form a complete circuit, to obtain the target wiring scheme.

[0090] In this embodiment, as Figure 9As shown in the figure, according to the preliminary planning scheme, the upper span and top span design of each circuit inlet and outlet are completed. The upper span refers to the longitudinal line, and the top span refers to the horizontal line. The top span height is generally 33-35m, the upper span height is generally 26-28m, and the busbar height is 19m.

[0091] like Figure 11 As shown, the present invention also provides a high-voltage power distribution device for arranging electrical equipment, wherein the high-voltage power distribution device is the high-voltage power distribution device as described above, comprising:

[0092] A tic-tac-toe structure 1, wherein the tic-tac-toe structure 1 is erected on the ground and has a preset height;

[0093] The interval string 2 is arranged in the square of the tic-tac-toe structure 1, and the interval string 2 is connected to the main transformer and the line tower 4 through the line.

[0094] In an optional embodiment of the present invention, the enclosed space formed by two adjacent squares in the longitudinal direction of the tic-tac-toe structure 1 corresponds to a spacing string 2, and the spacing string 2 is set on the ground.

[0095] In an optional embodiment of the present invention, the interval string 2 is connected to the main transformer via a main transformer incoming line 5, or the interval string 2 is connected to the line tower 4 via an outgoing line.

[0096] In an optional embodiment of the present invention, the interval string 2 is connected to the main transformer incoming and outgoing lines through an upper span line, a top span line and a busbar 91, and the upper span line, the top span line and the busbar 91 are passed through the criss-cross structure 1.

[0097] It should be noted that the device is a device corresponding to the above method, and all implementation methods in the above method embodiments are applicable to the embodiments of the device and can achieve the same technical effects.

[0098] The technical solution of the present invention is described below with two specific embodiments.

[0099] Example 1, 4 lines 10 scale-up scheme design

[0100] 1. As Figure 7 As shown, firstly, the 500kV HGIS power distribution device composed of the semi-C type HGIS complete set is analyzed and designed. For the 4-line 10-transformer scale, since there are 14 incoming and outgoing line circuits, 7 bay strings are required, and the position of the bay strings that cannot be outgoing is determined. The longitudinal dimensions of the 500kV HGIS power distribution device can refer to the 500kV standard design scheme.

[0101] 2. If Figure 8As shown in the figure, according to the 500kV standard design scheme and in combination with the location of the main transformer, the position of the spaced-out string is first determined. The designed position of the spaced-out string should be set in the middle of 4 groups of main transformers, so that the 500kV protection cubicle is in the middle of the 500kV HGIS switchgear, which can centrally lay power and control cables, effectively saving the amount of cable used. At the same time, the fire pump house and the water storage tank are also arranged below the spaced-out string, and its fire pipelines can be evenly distributed to 4 groups (each group has three phases, a total of 12 units) of main transformers. At the same time, the outgoing line path direction of the double-circuit on the same tower of the 500kV line can be re-planned through the proposed outgoing line direction.

[0102] 3. As Figure 9 shown in the figure, according to the planned 500kV HGIS switchgear, the design of the overhead lines and top overhead lines for the incoming and outgoing lines of each circuit is completed. Among them,

[0103] Outgoing line 1: 1 group of overhead lines, 2 groups of top overhead lines;

[0104] Outgoing line 2: 1 group of overhead lines, 1 group of top overhead lines;

[0105] Outgoing line 3: 1 group of overhead lines;

[0106] Outgoing line 4: 1 group of overhead lines;

[0107] Outgoing line 5: 1 group of overhead lines;

[0108] Outgoing line 6 (using the spaced-out string for outgoing line): 3 groups of overhead lines, 2 groups of top overhead lines;

[0109] Outgoing line 7: 1 group of overhead lines;

[0110] Outgoing line 8: 1 group of overhead lines;

[0111] Outgoing line 9: 1 group of overhead lines, 1 group of top overhead lines;

[0112] Outgoing line 10: 1 group of overhead lines, 2 groups of top overhead lines.

[0113] 4. As Figure 10 shown in the figure, finally, the semi-C type HGIS complete sets of equipment, incoming and outgoing line PTs and arresters, 500kV main busbars, and related auxiliary building facilities (rain deluge valve rooms, fire fighting tools) are arranged.

[0114] Example 2, Design of the 4-line 8-transformer scale scheme

[0115] 1. As Figure 12As shown in the figure, first, a design analysis of the 500kV HGIS distribution device composed of a semi-C type HGIS complete set of equipment is carried out. For the design scheme of this substation, since the west side of the 500kV HGIS distribution device is occupied by the synchronous condenser main plant and its auxiliary facilities, only the south side and the east side of the 500kV HGIS distribution device can be used for outgoing lines. For the scale of 4 lines and 8 transformers, since there are a total of 12 incoming and outgoing lines, 6 interval strings are required, and the positions of the interval strings where outgoing lines are not possible are determined. Among them, the longitudinal dimension of the 500kV HGIS distribution device can refer to the 500kV standard design scheme.

[0116] 2. As Figure 12 shown in the figure, according to the 500kV standard design scheme and in combination with the position of the main transformer, first determine the position of the air interval string. The designed position of the air interval string should be set in the middle of the 4 groups of main transformers, so that the 500kV protection cubicle is in the middle of the 500kV HGIS distribution device, and power and control cables can be laid centrally, effectively saving the amount of cable used. At the same time, the fire pump house and the water storage tank are also arranged below the air interval string, and its fire pipelines can be evenly distributed to the 4 groups (3 phases in each group, a total of 12 units) of main transformers. At the same time, the outgoing line path direction of the double-circuit on the same tower of the 500kV line can be re-planned through the proposed outgoing line direction.

[0117] 3. As Figure 13 shown in the figure, according to the planned 500kV HGIS distribution device, complete the design of the overhead lines and top overhead lines for the incoming and outgoing lines of each circuit. Among them,

[0118] Outgoing line 1: 1 group of overhead lines and 2 groups of top overhead lines;

[0119] Outgoing line 2: 1 group of overhead lines and 1 group of top overhead lines;

[0120] Outgoing line 3: 1 group of overhead lines;

[0121] Outgoing line 4: 1 group of overhead lines;

[0122] Outgoing line 5 (using the air interval string for outgoing line): 3 groups of overhead lines and 3 groups of top overhead lines;

[0123] Outgoing line 6: 1 group of overhead lines;

[0124] Outgoing line 7: 1 group of overhead lines;

[0125] Outgoing line 8: 1 group of overhead lines.

[0126] 4. As Figure 14 shown in the figure, finally, arrange the semi-C type HGIS complete set of equipment, incoming and outgoing line PTs and arresters, 500kV main busbars, and related auxiliary building facilities (rain deluge valve rooms, fire fighting tools).

[0127] According to the design of the 500kV HGIS distribution device of the present invention, it can be similarly applied to the design of scenarios where there are restrictions on the line corridor, the substation needs to install a bus high reactor, a synchronous condenser room, etc., and there are insufficient outgoing line conditions on a single side.

[0128] Through the unused cross lines in the 500kV HGIS distribution device, and by using the upper cross line and the top cross line of the spaced-out string, the problem that one of the 10 outgoing lines in 500kV cannot be directly led out is solved. The semi-C type HGIS complete set of equipment can be used to realize the design of the 4-to-10 line scheme, thereby optimizing the longitudinal dimension of the 500kV distribution device.

[0129] Through the layout design of the spaced-out string, a 500kV protection cubicle, a fire pump room, and a water storage tank can be arranged below the spaced-out string. Two to three 500kV protection cubicles required for the 4-to-8 line scale or the 4-to-10 line scale can be combined into one.

[0130] By adjusting the position of one main transformer incoming line to the outermost side and combining it with the preset position of the spaced-out string, the 4-to-8 line scale can be achieved, and there is no outgoing line on a single side of the 500kV distribution device.

[0131] It solves the current situation that when the scale is 4-to-8 lines, the 500kV outgoing line direction needs to lead out in three directions to the distribution device area, reserves a long-term expansion direction for the overall design of the substation, and at the same time solves the problem that it is impossible to lead out to a single side due to restrictions on the line corridor, the need to install a bus high reactor, a synchronous condenser room, etc. in the substation.

[0132] When the scale is 4-to-10 lines, the unified layout form of the 500kV HGIS equipment and the unified numbering of the 500kV main bus can be maintained, reducing the normal workload of production operation and maintenance personnel and avoiding potential safety hazards brought by the operation of non-conventional equipment.

[0133] Through the design of the spaced-out string outgoing line scheme, the semi-C type HGIS complete set of equipment can be used to realize the design of the 4-to-10 line scale distribution device scheme, solving the problem of the floor area of the longitudinal dimension of the distribution device; by combining the 500kV protection cubicles and arranging them below the spaced-out string, power and control cables can be laid centrally, effectively saving the cable usage; by arranging the fire pump room and the water storage tank below the spaced-out string, the problem of the scattered layout of the fire protection pipelines for 12 500kV main transformers is solved.

[0134] An embodiment of the present invention also provides a computing device, including: a processor and a memory storing a computer program. When the computer program is run by the processor, it executes the method as described above. All implementation manners in the above method embodiments are applicable to this embodiment and can also achieve the same technical effects.

[0135] An embodiment of the present invention also provides a computer-readable storage medium storing instructions, which, when running on a computer, cause the computer to execute the method as described above. All implementation manners in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0136] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0137] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0138] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in an electrical, mechanical, or other forms.

[0139] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0140] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0141] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0142] In addition, it should be noted that in the devices and methods of the present invention, obviously, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present invention. And, the steps of performing the above series of processes can naturally be executed in chronological order according to the described order, but it is not necessary to execute them in chronological order. Some steps can be executed in parallel or independently of each other. For those of ordinary skill in the art, it can be understood that all or any steps or components of the methods and devices of the present invention can be implemented in any computing device (including a processor, a storage medium, etc.) or a network of computing devices in the form of hardware, firmware, software, or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0143] Therefore, the object of the present invention can also be achieved by running a program or a set of programs on any computing device. The computing device can be a well-known general-purpose device. Therefore, the object of the present invention can also be achieved only by providing a program product containing program codes for implementing the method or device. That is to say, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future. It should also be noted that in the devices and methods of the present invention, obviously, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present invention. And, the steps of performing the above series of processes can naturally be executed in chronological order according to the described order, but it is not necessary to execute them in chronological order. Some steps can be executed in parallel or independently of each other.

[0144] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for determining an electrical equipment configuration scheme of a high-voltage power distribution device, characterized in that: include: Obtaining the surrounding environment information, target incoming line scale and target outgoing line scale of the target high-voltage power distribution device; Determine a target wiring scheme for N interval strings according to the surrounding environment information, the target incoming line scale and the target outgoing line scale; wherein N is a positive integer; the N interval strings include a space interval string, and no electrical equipment is arranged in the space interval string; The electrical equipment of the N bay strings is configured according to the target wiring scheme; wherein the electrical equipment adopts a semi-C type 500kV HGIS complete set of equipment; when the target outgoing line scale is 8, the outgoing line direction of the target wiring scheme is two directions; when the target outgoing line scale is 10, the layout form of the electrical equipment of each bay string in the target wiring scheme is the same; Wherein, according to the surrounding environment information, the target incoming line scale and the target outgoing line scale, the target wiring scheme of N interval strings is determined, including: Determining a target incoming line direction and a target outgoing line direction of the target high-voltage power distribution device according to the surrounding environment information of the target high-voltage power distribution device; According to the target incoming line scale and the target outgoing line scale, the number N of the interval strings is determined; wherein N=(target incoming line scale+target outgoing line scale) / 2+1; Determine a target wiring scheme for the N interval strings according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of interval strings; Wherein, according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of interval strings, determining the target wiring scheme of the N interval strings includes: Determine a preliminary planning scheme for N interval strings according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of interval strings; Arrange the incoming and outgoing lines of the N interval strings according to the preliminary planning scheme to obtain the target wiring scheme; According to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of interval strings, a preliminary planning scheme for N interval strings is determined, including: Determine the position of the half interval string that cannot be connected according to the target incoming line scale, the target outgoing line scale, the target incoming line direction, the target outgoing line direction and the number N of interval strings; According to the number N of the interval strings and the position of the main transformer, the position of a space interval string is determined; the position of the space interval string is located in the middle of the main transformer; According to the position of the half-interval string that cannot be connected, the position of one space interval string and the position of the remaining interval strings, the direction of the line connection path of the N interval strings with double circuits on the same tower is determined; Determine the layout of the fire-fighting facilities according to the position of the space partition string; the fire-fighting facilities are arranged in the space partition string, and the fire-fighting facilities include: a protection room, a fire pump room and a water storage tank; According to the outgoing line path direction of the N double-circuit interval strings on the same tower and the layout plan of the fire-fighting facilities, a preliminary planning plan for the N interval strings is obtained; wherein, the half interval string that cannot be connected to the line is connected to the line through the space interval string.

2. The method for determining the electrical equipment configuration scheme of the high-voltage power distribution device according to claim 1, characterized in that: According to the position of the half interval string that cannot be connected, the position of one space interval string and the position of the remaining interval strings, the direction of the line connection path of the N interval strings with double circuits on the same tower is determined, including: The interval string is connected according to the principle that the two outgoing lines in one interval string are in different directions and one interval string can only have one in and one out or two out, so as to obtain the outgoing line path direction of the N interval strings with double circuits on the same tower.

3. The method for determining the electrical equipment configuration scheme of a high-voltage power distribution device according to claim 1, characterized in that: According to the preliminary planning scheme, the incoming and outgoing lines of the N interval strings are arranged to obtain the target wiring scheme, including: According to the outgoing line path direction of the double-circuit on the same tower of the preliminary planning scheme, the upper crossing lines and top-crossing lines of the incoming and outgoing lines of each circuit of each interval string are arranged, so that the N interval strings and the target incoming lines of the target incoming line scale and the target outgoing lines of the target outgoing line scale form a complete circuit, and the target wiring scheme is obtained.

4. A high voltage power distribution device for arranging electrical equipment, characterized in that: The high-voltage power distribution device is a high-voltage power distribution device according to any one of claims 1 to 3, comprising: A tic-tac-toe structure (1), wherein the tic-tac-toe structure (1) stands upright on the ground and has a predetermined height; An interval string (2) is arranged in a square of the tic-tac-toe structure (1), and the interval string (2) is connected to a main transformer and a line tower (4) via a line; The enclosed space formed by two adjacent squares in the longitudinal direction of the tic-tac-toe structure (1) corresponds to a spacer string (2), and the spacer string (2) is arranged on the ground; The interval string (2) is connected to the main transformer via a main transformer incoming line (5), or the interval string (2) is connected to the line tower (4) via an outgoing line; There are N interval strings, where N is a positive integer; the N interval strings include a space interval string, in which no electrical equipment is arranged; the remaining interval strings are arranged with semi-C type 500kV HGIS complete sets of equipment; when the target outgoing line scale of the high-voltage power distribution device is 8, the outgoing line direction of the high-voltage power distribution device is in two directions; when the target outgoing line scale of the high-voltage power distribution device is 10, the layout of the electrical equipment in each interval string in the high-voltage power distribution device is the same; The space partition string is located in the middle of the main transformer. The fire-fighting facilities are arranged in the space partition string. The fire-fighting facilities include: a protection room, a fire pump room and a water reservoir. Half of the N partition strings have outlets through the space partition string.

5. The high-voltage power distribution device for arranging electrical equipment according to claim 4, characterized in that: The interval string (2) is connected to the main transformer incoming line (5) and outgoing line via an upper span line, a top span line and a busbar (91), and the upper span line, the top span line and the busbar (91) are arranged on the crisscross structure (1).

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