A method for automatic generation of electrical system diagrams

Abstract

The application relates to a method for automatically generating an electrical system diagram, and belongs to the computer field.The method comprises the following steps: S1, preparing an incoming and outgoing line unit required for making an electrical system diagram; S2, obtaining parameter information carried by equipment, and establishing power supply and distribution upper and lower level relations; S3, classifying according to power distribution box types, reserving required input value conditions according to categories, and taking the value conditions as incoming line information; S4, classifying according to loop types according to loop purposes, placing loop parameter information, and taking the loop parameter information as outgoing line information; S5, selecting corresponding incoming and outgoing line units, and taking all information required by the system diagram by the incoming and outgoing line units; S6, taking requirements as placed conditions; S7, setting subjective change contents as changeable input conditions; S8, automatically calculating and searching all parameter information required by the system diagram, calling the incoming and outgoing line units in step S5, and automatically generating a power distribution box system diagram according to prefabricated layout requirements.The application guarantees the accuracy of a generated result, and the method is simple to use.

Description

Technical Field

[0001] This invention belongs to the field of computer science and relates to a method for automatically generating electrical system diagrams. Background Technology

[0002] Currently, the so-called automatic system diagram generation methods on the market are simply transferring the drawings and calculations from the blueprints into a file similar to Excel, then importing it into a computer, which then translates it into the corresponding distribution box system diagram. All information is not linked and needs to be manually entered; it's just a different drawing method. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a method for automatically generating electrical system diagrams.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A method for automatically generating electrical system diagrams, the method comprising the following steps:

[0006] S1: The incoming and outgoing line units, distribution box frame, and other modules required for creating the electrical system diagram;

[0007] S2: Obtain the parameter information carried by the equipment and establish the upper and lower levels of power supply and distribution;

[0008] S3: Classify according to the type of distribution box / cabinet, and reserve the required input value conditions according to the category as incoming line information;

[0009] S4: Classify the circuit type according to its purpose, and input the circuit parameter information as outgoing line information;

[0010] S5: Select the corresponding incoming / outgoing line unit according to the type in steps S3 and S4. The incoming / outgoing line unit carries all the information required by the system diagram.

[0011] S6: Include local regulations, electrical-related manuals, and standard drawing sets as inclusion criteria;

[0012] S7: Subjective changes can be set as input conditions that can be modified;

[0013] S8: Automatically calculate and select switch types, find all parameter information required for the system diagram, call the incoming and outgoing line units in step S5, and automatically generate the distribution box system diagram according to the pre-fabricated layout requirements.

[0014] Optionally, the incoming and outgoing line units in S1 are basic components of the distribution box system diagram, and the parameter information includes: switch type, tripping type, tripping curve, frame current, upstream distribution box number, cabinet number, cabinet name, equipment purpose, power, power factor, circuit number, flame retardant and fire resistant performance, cable type, combustion performance, demand factor and number of poles.

[0015] Optionally, in S2, the parameter information includes: the number of the upper-level distribution box, the number of the box / cabinet, the name of the box / cabinet, the purpose of the equipment, the power, the power factor, the circuit number, the application location, the laying method of the incoming cable, the type of the incoming cable, the demand factor, the reserved load, and the number of poles.

[0016] The hierarchical relationship of power supply and distribution is as follows: if the number of the upper-level distribution box of one device is the same as the number of the cabinet of another device, it means that the latter is the power supply equipment of the former, and the former is the power consumption equipment of the latter.

[0017] Optionally, in S3, the types of distribution box cabinets include:

[0018] A. Firefighting power supply: Firefighting dual power distribution box, firefighting dual power distribution cabinet;

[0019] B. Emergency Lighting: Dual power supply distribution box for fire emergency lighting; fire emergency lighting distribution box.

[0020] C. Fire Protection Main Box: Fire Protection Distribution Main Box, Fire Protection Distribution Main Cabinet;

[0021] D. Non-firefighting power: Non-firefighting power dual power distribution box, ordinary power distribution box, non-firefighting power dual power distribution cabinet, ordinary power distribution cabinet;

[0022] E General Lighting: General lighting dual power supply distribution box, general lighting distribution box, non-fire protection lighting distribution box;

[0023] F Non-fire protection main box: Non-fire protection power distribution main box, non-fire protection power distribution main cabinet;

[0024] G. Residential power distribution: Indoor distribution boxes, meter boxes, and main distribution boxes for residential buildings;

[0025] H Emergency Power Supply: Centralized Control Emergency Lighting Distribution Box - Type B, Centralized Control Emergency Lighting Distribution Box - Type A, Centralized Control Emergency Lighting Central Power Supply - Type B, Centralized Control Emergency Lighting Central Power Supply - Type A;

[0026] The required input values ​​are reserved according to the category:

[0027] For fire-fighting power A:

[0028] Setting parameters: motor output switch type, pipe type, incoming power supply type, miniature circuit breaker current limit, and classification of the application environment for wires and cables;

[0029] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch;

[0030] For emergency lighting (B):

[0031] Setting parameters: pipe type, incoming power supply type, mini-interrupt current limit, and classification of the application environment for wires and cables;

[0032] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch;

[0033] For Fire Control Box C:

[0034] Setting parameters: pipe type, incoming power supply type, mini-interrupt current limit, and classification of the application environment for wires and cables;

[0035] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current;

[0036] For D non-firefighting power:

[0037] Setting parameters: pipe type, incoming power supply type, whether the primary distribution box is equipped with leakage fire monitoring, micro-current limit and the classification of the place of use of wires and cables;

[0038] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch;

[0039] For general lighting (E):

[0040] Setting parameters: pipe type, incoming power supply type, whether the primary distribution box is equipped with leakage fire monitoring, design power value, micro-current limit value, and classification of the place of use of wires and cables;

[0041] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch;

[0042] For F non-fire main box:

[0043] Setting parameters: motor output switch type, pipe type, incoming power supply form, whether the primary distribution box is equipped with leakage current fire monitoring, micro-current limit, and the classification of the place of use of wires and cables;

[0044] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current;

[0045] For residential power distribution in G:

[0046] Setting parameters: pipe type, incoming power supply type, design power value, whether the primary distribution box is equipped with leakage current fire monitoring, micro-current limit, and the classification of the place of use of wires and cables;

[0047] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current;

[0048] For H emergency power supply:

[0049] Setting parameters: pipe type, design power value, mini-interruption current limit, and classification of the application environment for wires and cables;

[0050] Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current.

[0051] Optionally, in S4, the circuit types include lighting circuits, motor circuits, control box circuits, and custom reserved circuits;

[0052] The circuit parameter information includes: switch type, breaking capacity, rated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, circuit number, actual power, equipment application, and pipe type.

[0053] Optionally, in S5, the incoming and outgoing line units are two components of the system diagram; the incoming line information corresponds to the parameter information in S3, which includes various categories; the outgoing line information corresponds to the parameter information in S4, which includes various categories.

[0054] Optionally, in S6, local regulations, electrical-related manuals, and standard drawing sets require the following:

[0055] Power Engineering Cable Design Standard GB 50217-2018

[0056] Fire performance rating of cables and optical fibers GB 31247-2014

[0057] Low-voltage power distribution design standard GB 50054-2011

[0058] General Electrical Equipment Power Distribution Design Standard GB 50055-2011

[0059] Electrical Design Standard for Residential Buildings JGJ 242-2011

[0060] Design Code for Automatic Fire Alarm Systems GB50116-2013

[0061] Electrical Design Standard for Civil Buildings GB 51348-2019

[0062] Fire Protection Design Standard for Electrical Wires and Cables in Civil Buildings DBJ50 / T-164-2021

[0063] 19DX101-1 Commonly Used Data for Building Electrical Systems

[0064] Industrial and Civil Power Supply and Distribution Design Manual, Fourth Edition.

[0065] Optionally, in S7, the subjective changes include pipe type, incoming power supply form, design power value, whether the primary distribution box is equipped with leakage fire monitoring, micro-current limit, surge protector (SPD), the location of cutting off non-fire-fighting power supply in case of fire, the location of electricity meter setting, and time control unit.

[0066] An interactive interface that allows for changing input conditions refers to one that requires manual input or selection.

[0067] Optionally, in step S8, the calculation is automatically performed as follows:

[0068] ① Power of the distribution box Pe: The sum of the power of all circuits belonging to the distribution box;

[0069] Loop power Pe: The sum of the power of all devices carried by this loop;

[0070] ②Based on the power Pe and the power factor cosθ, the calculated current Ijs is obtained;

[0071] Three-phase: Calculate the current Ijs = (PE * Kx) / (1.732 * 0.38 * COSθ)

[0072] Single phase: Calculate the current Ijs = (PE * Kx) / (0.22 * Cosθ);

[0073] The switch selection is as follows:

[0074] The circuit breaker rated current = calculated current (Ijs) * 1.1 (can be adjusted according to design). Compare the obtained value with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet, and select the current value that is greater than the calculated current (Ijs) * 1.1 (can be adjusted according to design) and closest to it.

[0075] The rated current of the disconnector switch = calculated current (Ijs) * 1.1 (can be adjusted according to the design). Compare the obtained value with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet. Select the current value that is greater than the calculated current (Ijs) * 1.1 (can be adjusted according to the design) and closest to it. Then, increase the selected rated current by one level.

[0076] The rated current of the dual power supply is calculated as (Ijs) * 1.25 (which can be adjusted according to the design). Compare the value obtained with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet, and select the current value that is greater than (Ijs) * 1.25 (which can be adjusted according to the design) and closest to it.

[0077] The selection tables for rated current and frame current of various switches are summarized based on the S6 specifications, drawings, and manuals.

[0078] The logic for generating flame retardant and fire-resistant properties, cable type, and combustion performance is as follows: Based on the set values ​​of standard source and the classification of the place of use of wires and cables, and according to the cable performance selection table, the values ​​of flame retardant and fire-resistant properties, cable type, and combustion performance are automatically matched.

[0079] The selection of cable performance is based on the S6 specifications, drawings, and manuals.

[0080] Cable specifications and conduit type: Automatically obtained from the cable specification selection table corresponding to the rated current value of the switch;

[0081] The selection of cable specifications is based on the S6 specifications, drawings, and manuals.

[0082] Optionally, in S7, the subjective changes include pipe type, incoming power supply form, design power value, whether the primary distribution box is equipped with leakage fire monitoring, micro-current limit, surge protector (SPD), the location of cutting off non-fire-fighting power supply in case of fire, the location of electricity meter setting, and time control unit.

[0083] An interactive interface that allows for changing input conditions refers to one that requires manual input or selection.

[0084] Optional, automatically calculated as:

[0085] ① Power of the distribution box Pe: The sum of the power of all circuits belonging to the distribution box;

[0086] Loop power Pe: The sum of the power of all devices carried by this loop;

[0087] ②Based on the power Pe and the power factor cosθ, the calculated current Ijs is obtained;

[0088] Three-phase: Calculate the current Ijs = (PE * Kx) / (1.732 * 0.38 * COSθ)

[0089] Single phase: Calculate the current Ijs = (PE * Kx) / (0.22 * Cosθ);

[0090] The switch selection is as follows:

[0091] The circuit breaker rated current = calculated current (Ijs) * 1.1 (can be adjusted according to design). Compare the obtained value with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet, and select the current value that is greater than the calculated current (Ijs) * 1.1 (can be adjusted according to design) and closest to it.

[0092] The rated current of the disconnector switch = calculated current (Ijs) * 1.1 (can be adjusted according to the design). Compare the obtained value with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet. Select the current value that is greater than the calculated current (Ijs) * 1.1 (can be adjusted according to the design) and closest to it. Then, increase the selected rated current by one level.

[0093] The rated current of the dual power supply is calculated as (Ijs) * 1.25 (which can be adjusted according to the design). Compare the value obtained with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet, and select the current value that is greater than (Ijs) * 1.25 (which can be adjusted according to the design) and closest to it.

[0094] The selection tables for rated current and frame current of various switches are summarized based on the S6 specifications, drawings, and manuals.

[0095] The logic for generating flame retardant and fire-resistant properties, cable type, and combustion performance is as follows: Based on the set values ​​of standard source and the classification of the place of use of wires and cables, and according to the cable performance selection table, the values ​​of flame retardant and fire-resistant properties, cable type, and combustion performance are automatically matched.

[0096] The selection of cable performance is based on the S6 specifications, drawings, and manuals.

[0097] Cable specifications and conduit type: Automatically obtained from the cable specification selection table corresponding to the rated current value of the switch;

[0098] The selection of cable specifications is based on the S6 specifications, drawings, and manuals.

[0099] The beneficial effects of this invention are as follows:

[0100] This invention utilizes the device's built-in information to achieve information transmission. It is simple to set up, requires high professional cooperation, conforms to design logic, and performs calculations and selections using the device's built-in information, meeting specification requirements, effectively avoiding errors and omissions, and improving design quality and efficiency.

[0101] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0102] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0103] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0104] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0105] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0106] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0107] like Figure 1 The diagram shows a method for automatically generating electrical system diagrams.

[0108] All incoming and outgoing line units needed to create an electrical system diagram do not need to be created every time; they can be reused.

[0109] Obtain the parameter information of the equipment on the drawing according to S2 (this parameter information is a necessary condition for automatically generating the system diagram).

[0110] Electrical equipment: Fan

[0111] Upper-level distribution box number: ATfj

[0112] Circuit number: 1

[0113] Incoming cable laying method: CE

[0114] Incoming cable type: cable

[0115] Equipment application: Exhaust (smoke) fan

[0116] Low-speed power: 9kW

[0117] High-speed power: 11kW

[0118] Fan number: P(Y)-1-1

[0119] Power factor: 0.8

[0120] Extreme number: 3

[0121] Rated voltage 380V

[0122] Electrical equipment: Submersible sewage pump control box

[0123] Upper-level distribution box number: ATfj

[0124] Circuit number: 2

[0125] Incoming cable laying method: CE

[0126] Incoming cable type: cable

[0127] Equipment Application: Submersible Sewage Pump Control Box

[0128] Power: 6kW

[0129] Power factor: 0.8

[0130] Extreme number: 3

[0131] Rated voltage 380V

[0132] Distribution box: Fire-fighting dual-power distribution box

[0133] Container number: ATfj

[0134] Establish the power supply and distribution hierarchy according to S2.

[0135] The upstream distribution box of the electrical equipment fan is numbered ATfj.

[0136] The upstream distribution box of the submersible pump control box is numbered ATfj.

[0137] The distribution box / cabinet number is ATfj

[0138] The fire-fighting dual-power distribution box named ATfj is the upstream distribution box for the fan and submersible sewage pump control box, thus establishing a complete power supply and distribution relationship.

[0139] Classify distribution boxes and cabinets according to S3 classification.

[0140] Fire-fighting dual-power distribution box belongs to the fire-fighting power category.

[0141] According to the classification of S4, the required input value conditions are reserved for this power supply and distribution unit.

[0142] The motor output switch type is set to control and protection switch.

[0143] Pipe type set to SC

[0144] The incoming power supply is set to radial.

[0145] The current limit of the miniature circuit breaker is set to 80A.

[0146] The source of the standard for classifying the usage sites of wires and cables is set as the Chongqing local standard, and the site classification is Level 1.

[0147] Determine the circuit type classification according to S4.

[0148] Circuit type: The fan is a motor circuit, and the submersible sewage pump control box is a control box circuit.

[0149] According to the parameter information required for the S4 insertion loop.

[0150] S5: Based on S2 to S4, the selection of all incoming and outgoing line units has been completed.

[0151] S6: Complete the digital integration of specifications and standards in the manual for easy access.

[0152] S7: Set surge protectors according to subjective requirements.

[0153] S8: Automatic calculation and combination;

[0154] Calculation of outgoing line information from the distribution box:

[0155] The fan in loop 1 is automatically calculated.

[0156] High-speed power 11kW

[0157] Calculate the current Ijs: Calculate the current (Ijs) = (PE * Kx) / (1.732 * 0.38 * COSθ)

[0158] = (11*1) / (1.732*0.38*0.8)

[0159] =21A

[0160] Application Switch Selection Table

[0161] (Summarized from "Low-voltage Power Distribution Design Code GB 50054-2011", "General Electrical Equipment Power Distribution Design Code GB50055-2011", and "Civil Building Electrical Design Standard GB 51348-2019")

[0162] Switch rated current: 32A

[0163] Application Cable Specification Selection Table (summarized from "19DX101-1 Commonly Used Data for Building Electrical Engineering" and "Industrial and Civil Power Supply and Distribution Design Manual, Fourth Edition")

[0164] Cable specifications: 4*6

[0165] Application Cable Performance Selection Table (summarized from "Fire Protection Design Standard for Electrical Wires and Cables in Civil Buildings DBJ50 / T-164-2021", "Design Standard for Cables in Power Engineering GB 50217-2018", and "Classification of Burning Performance of Cables and Optical Fibers GB 31247-2014")

[0166] Flame retardant and fire resistant properties: WDZBN

[0167] Cable type: YJY

[0168] Combustion performance: B1

[0169] Low-speed power 9kW

[0170] Calculated current Ijs: 17A

[0171] Application switch selection table (summarized from "Low-voltage power distribution design code GB 50054-2011", "General electrical equipment power distribution design code GB 50055-2011", and "Civil building electrical design standard GB 51348-2019")

[0172] Switch rated current: 32A

[0173] Application Cable Specification Selection Table (summarized from "19DX101-1 Commonly Used Data for Building Electrical Engineering" and "Industrial and Civil Power Supply and Distribution Design Manual, Fourth Edition")

[0174] Cable specifications: 3*6

[0175] Application Cable Performance Selection Table (summarized from "Fire Protection Design Standard for Electrical Wires and Cables in Civil Buildings DBJ50 / T-164-2021", "Design Standard for Cables in Power Engineering GB 50217-2018", and "Classification of Burning Performance of Cables and Optical Fibers GB 31247-2014")

[0176] Flame retardant and fire resistant properties: WDZBN

[0177] Cable type: YJY

[0178] Combustion performance: B1

[0179] The fire pump control box of loop 2 is automatically calculated.

[0180] Power: 6kW

[0181] Calculate the current Ijs: Calculate the current (Ijs) = (PE * Kx) / (1.732 * 0.38 * COSθ)

[0182] = (6*1) / (1.732*0.38*0.8)

[0183] =12A

[0184] Application switch selection table (summarized from "Low-voltage power distribution design code GB 50054-2011", "General electrical equipment power distribution design code GB 50055-2011", and "Civil building electrical design standard GB 51348-2019")

[0185] Switch rated current: 20A

[0186] Application Cable Specification Selection Table (summarized from "19DX101-1 Commonly Used Data for Building Electrical Engineering" and "Industrial and Civil Power Supply and Distribution Design Manual, Fourth Edition")

[0187] Cable specifications: 5*4

[0188] Application Cable Performance Selection Table (summarized from "Fire Protection Design Standard for Electrical Wires and Cables in Civil Buildings DBJ50 / T-164-2021", "Design Standard for Cables in Power Engineering GB 50217-2018", and "Classification of Burning Performance of Cables and Optical Fibers GB 31247-2014")

[0189] Flame retardant and fire resistant properties: WDZBN

[0190] Cable type: YJY

[0191] Combustion performance: B1

[0192] Calculation of incoming line information for distribution box:

[0193] Power: 17kW

[0194] Calculate the current Ijs: Calculate the current (Ijs) = (PE * Kx) / (1.732 * 0.38 * COSθ)

[0195] = (17*1) / (1.732*0.38*0.8)

[0196] =33A

[0197] Application switch selection table (summarized from "Low-voltage power distribution design code GB 50054-2011", "General electrical equipment power distribution design code GB 50055-2011", and "Civil building electrical design standard GB 51348-2019")

[0198] Disconnect switch rated current: 50A

[0199] Dual power supply switch rated current: 50A

[0200] Application Cable Specification Selection Table (summarized from "19DX101-1 Commonly Used Data for Building Electrical Engineering" and "Industrial and Civil Power Supply and Distribution Design Manual, Fourth Edition")

[0201] Cable specifications: 5*10

[0202] Application Cable Performance Selection Table (summarized from "Fire Protection Design Standard for Electrical Wires and Cables in Civil Buildings DBJ50 / T-164-2021", "Design Standard for Cables in Power Engineering GB 50217-2018", and "Classification of Burning Performance of Cables and Optical Fibers GB 31247-2014")

[0203] Flame retardant and fire resistant properties: WDZBN

[0204] Cable type: YJY

[0205] Combustion performance: B1

[0206] Assign all the above values ​​to the selected incoming and outgoing line units in S4, and the computer will assemble the incoming and outgoing line units to automatically generate the distribution box system diagram.

[0207] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for automatically generating electrical system diagrams, characterized in that: The method includes the following steps: S1: The incoming and outgoing line units, distribution box frame, and modules required for the electrical system diagram are needed. The incoming and outgoing line units are the basic components of the distribution box system diagram. The parameter information includes: switch type, tripping type, tripping curve, frame current, upstream distribution box number, cabinet number, cabinet name, equipment purpose, power, power factor, circuit number, flame retardant and fire resistant performance, cable type, combustion performance, demand factor, and number of poles. S2: Obtain the parameter information carried by the equipment and establish the upper and lower levels of power supply and distribution; S3: Classify according to the type of distribution box / cabinet, and reserve the required input value conditions according to the category as incoming line information; S4: Classify the circuit type according to its purpose, and input the circuit parameter information as outgoing line information; S5: Select the corresponding incoming / outgoing line unit according to the type in steps S3 and S4. The incoming / outgoing line unit carries all the information required by the system diagram. S6: Include local regulations, electrical-related manuals, and standard drawing sets as inclusion criteria; S7: Subjective changes are set to allow for changeable input conditions; the subjective changes include pipe type, incoming power supply type, design power value, whether the primary distribution box is equipped with leakage fire monitoring, micro-current limit, surge protector (SPD), location of non-fire-fighting power supply cut-off in case of fire, meter setting location, and time control unit. Customizable input conditions refer to interactive interfaces that require manual input or selection. S8: Automatically calculate and select switch types, find all parameter information required for the system diagram, call the incoming and outgoing line units in step S5, and automatically generate the distribution box system diagram according to the pre-fabricated layout requirements; Automatically calculated as: ① Power of the distribution box Pe: The sum of the power of all circuits belonging to the distribution box; Loop power Pe: The sum of the power of all devices carried by this loop; ②Based on the power Pe and the power factor cosθ, the calculated current Ijs is obtained; Three-phase: Calculate the current Ijs = (PE * Kx) / (1.732 * 0.38 * COSθ) Single phase: Calculate the current Ijs = (PE * Kx) / (0.22 * Cosθ); The switch selection is as follows: The circuit breaker's rated current is calculated as Ijs * 1.

1. The obtained value is compared with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet. Select the current value that is greater than the calculated current Ijs * 1.1 and closest to it. The rated current of the disconnecting switch is calculated as Ijs * 1.

1. The obtained value is compared with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet. Select the current value that is greater than and closest to the calculated current Ijs * 1.1, and then increase the selected rated current by one level. The rated current of the dual power supply is calculated as Ijs * 1.

25. The obtained value is compared with the "Rated Current and Frame Current Selection Table" of the switch to find the corresponding worksheet. Select the current value that is greater than the calculated current Ijs * 1.25 and closest to it. The selection table for rated current and frame current of various switches is summarized based on the specifications, drawings, and manuals of S6. The logic for generating flame retardant and fire-resistant properties, cable type, and combustion performance is as follows: Based on the set values ​​of standard source and the classification of the place of use of wires and cables, and according to the cable performance selection table, the values ​​of flame retardant and fire-resistant properties, cable type, and combustion performance are automatically matched. The cable performance selection is based on the specifications, drawings, and manuals of S6. Cable specifications and conduit type: Automatically obtained from the cable specification selection table corresponding to the rated current value of the switch; The cable specifications are selected based on the specifications, drawings, and manuals of S6.

2. The method for automatically generating electrical system diagrams according to claim 1, characterized in that: In S2, the parameter information includes: the number of the upper-level distribution box, the number of the box / cabinet, the name of the box / cabinet, the purpose of the equipment, the power, the power factor, the circuit number, the application location, the laying method of the incoming cable, the type of the incoming cable, the demand factor, the reserved load, and the number of poles. The hierarchical relationship of power supply and distribution is as follows: if the number of the upper-level distribution box of one device is the same as the number of the cabinet of another device, it means that the latter is the power supply equipment of the former, and the former is the power consumption equipment of the latter.

3. The method for automatically generating electrical system diagrams according to claim 2, characterized in that: In S3, the types of distribution boxes and cabinets include: A. Firefighting power supply: Firefighting dual power distribution box, firefighting dual power distribution cabinet; B. Emergency Lighting: Dual power supply distribution box for fire emergency lighting; fire emergency lighting distribution box. C. Fire Protection Main Box: Fire Protection Distribution Main Box, Fire Protection Distribution Main Cabinet; D. Non-firefighting power: Non-firefighting power dual power distribution box, ordinary power distribution box, non-firefighting power dual power distribution cabinet, ordinary power distribution cabinet; E General Lighting: General lighting dual power supply distribution box, general lighting distribution box, non-fire protection lighting distribution box; F Non-fire protection main box: Non-fire protection power distribution main box, non-fire protection power distribution main cabinet; G. Residential power distribution: Indoor distribution boxes, meter boxes, and main distribution boxes for residential buildings; H Emergency Power Supply: Centralized Control Emergency Lighting Distribution Box - Type B, Centralized Control Emergency Lighting Distribution Box - Type A, Centralized Control Emergency Lighting Central Power Supply - Type B, Centralized Control Emergency Lighting Central Power Supply - Type A; The required input values ​​are reserved according to the category: For fire-fighting power A: Setting parameters: motor output switch type, pipe type, incoming power supply type, miniature circuit breaker current limit, and classification of the application environment for wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch; For emergency lighting (B): Setting parameters: pipe type, incoming power supply type, mini-interrupt current limit, and classification of the application environment for wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch; For Fire Control Box C: Setting parameters: pipe type, incoming power supply type, mini-interrupt current limit, and classification of the application environment for wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current; For D non-firefighting power: Setting parameters: pipe type, incoming power supply type, whether the primary distribution box is equipped with leakage fire monitoring, micro-current limit and the classification of the place of use of wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch; For general lighting (E): Setting parameters: pipe type, incoming power supply type, whether the primary distribution box is equipped with leakage fire monitoring, design power value, micro-current limit value, and classification of the place of use of wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant performance, cable type, combustion performance, cable specifications, switch type, breaking capacity, rated current of switch and rated current of dual power switch; For F non-fire main box: Setting parameters: motor output switch type, pipe type, incoming power supply form, whether the primary distribution box is equipped with leakage current fire monitoring, micro-current limit, and the classification of the place of use of wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current; For residential power distribution in G: Setting parameters: pipe type, incoming power supply type, design power value, whether the primary distribution box is equipped with leakage current fire monitoring, micro-current limit, and the classification of the place of use of wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current; For H emergency power supply: Setting parameters: pipe type, design power value, mini-interruption current limit, and classification of the application environment for wires and cables; Parameter information: power, power factor, demand factor, calculated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, switch type, breaking capacity, and rated switch current.

4. The method for automatically generating electrical system diagrams according to claim 3, characterized in that: In S4, the circuit types include lighting circuits, motor circuits, control box circuits, and custom reserved circuits; The circuit parameter information includes: switch type, breaking capacity, rated current, flame retardant and fire resistant properties, cable type, combustion performance, cable specifications, circuit number, actual power, equipment application, and pipe type.

5. The method for automatically generating electrical system diagrams according to claim 4, characterized in that: In S5, the incoming and outgoing line units are two components of the system diagram; the incoming line information corresponds to the parameter information in S3, which includes various categories; the outgoing line information corresponds to the parameter information in S4, which includes various categories.

6. The method for automatically generating electrical system diagrams according to claim 5, characterized in that: In S6, local regulations, electrical-related manuals, and standard drawing sets require the following: Power Engineering Cable Design Standard GB 50217-2018 Fire performance rating of cables and optical fibers GB 31247-2014 Low-voltage power distribution design standard GB 50054-2011 General Electrical Equipment Power Distribution Design Standard GB 50055-2011 Electrical Design Standard for Residential Buildings JGJ 242-2011 Design Code for Automatic Fire Alarm Systems GB50116-2013 Electrical Design Standard for Civil Buildings GB 51348-2019 Fire Protection Design Standard for Electrical Wires and Cables in Civil Buildings DBJ50 / T-164-2021 19DX101-1 Commonly Used Data for Building Electrical Systems Industrial and Civil Power Supply and Distribution Design Manual, Fourth Edition.

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