CN110059394B - Design method for parameter type underground power supply of coal mine - Google Patents
Design method for parameter type underground power supply of coal mine Download PDFInfo
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Abstract
The application provides a method for designing power supply under a parametric coal mine, which takes tree-structured data as a carrier and is used for assisting in designing an underground power supply system and reasonably selecting the type of power supply equipment, and is characterized by comprising the following steps: the method comprises the steps of constructing a basic data structure, constructing an electromechanical equipment database, a model selection calculation algorithm library and a mapping style template library, inputting motor parameter nodes, sequentially accessing a low-voltage switch, a transformer and high-voltage switch parameter nodes, calculating short-circuit current and voltage loss, forming a power supply system model, and automatically generating an underground power supply system map and an underground power supply design report according to requirements. The method abandons the traditional method of underground power supply design recorded by a drawing, takes data of a tree structure as a carrier, does not relate to graph modification, reduces the workload, updates the model selection calculation result in real time, is safe and reliable, and has good popularization value.
Description
Technical Field
The application relates to the technical field of mine electromechanics, in particular to a parameter type coal mine underground power supply design method.
Background
Electric power is a main energy source produced by modern enterprises, and modern coal mine production machinery does not use electric energy as direct or indirect power. The design of a power supply system is an indispensable part in mine production, and the normal and safe operation of electromechanical equipment is an important part of mine safety production. Therefore, the correct and reasonable power supply design and management method is of great importance to the stable operation of electromechanical equipment and the safety and reliability of relay protection, and further the high yield and high efficiency of coal production. Common power supply Design methods for mines are mainly divided into a paper surface manual drawing Design mode, a Computer Aided drawing Design (CAD) mode and a power supply Aided Design software mode based on different designed carriers.
Taking a paper surface manual drawing design mode and a computer aided drawing design mode as examples, the existing basic thought of power supply design and management is as follows:
and determining the type, model and quantity of the electromechanical equipment in a certain power utilization area according to actual production requirements.
Drawing a device connection schematic diagram as a power supply system design diagram which is embodied in a paper surface or a CAD file.
The related power supply equipment is selected, calculation is completed through manual calculation or in an EXCEL table of a preset formula, a proper transformer, a proper cable section and a proper cable type and a proper switch type are selected according to a calculation result, the proper transformer, the proper cable section and the proper cable type and the proper switch type are reflected on a power supply system diagram in a character marking mode, and the calculation result and the type selection process are manually written into a power supply design report document.
The power supply design is managed in the form of a power supply system diagram and a power supply design report, and the power supply system diagram and the report need to be manually modified when the field changes.
Taking a power supply aided design software design mode as an example, the basic idea of the existing power supply design and management is as follows:
and determining the type, model and quantity of the motor equipment of a certain electric equipment according to actual production requirements.
On computer software, a special symbol is used for representing electromechanical equipment, a cable symbol is used for representing a cable, a power supply system schematic diagram is drawn, and the topological relation of the electromechanical equipment symbol and the cable connection is stored in a topological relation library.
And clicking the electromechanical symbol to trigger the equipment type selection function, and inputting equipment information for the electromechanical equipment and the cable.
The system makes a power supply equipment type selection calculation result through the attribute information of the electromechanical entity and the topological relation library and through a calculation formula recorded in advance, and the power supply equipment type selection calculation result is stored in the electromechanical entity as an additional attribute.
The system reads the model selection information in the electromechanical entity one by one and automatically generates a power supply design report.
The existing power supply design and management mode has the following defects:
the power supply design drawing is stored by taking a drawing as a carrier, once the drawing is drawn, the drawing is not easy to modify, the drawing needs to be redrawn, the workload is very large, power supply system drawings of an underground central substation, an underground mining area substation and a working face often need to be drawn in different drawings, and the connection relation is not visual. If the area power supply system diagram is drawn on the same diagram, the required area power supply system diagram is not easy to be divided from the whole power supply system diagram when only the area power supply system diagram is required.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a design method for power supply under a parameter type coal mine, which is different from a traditional power supply design mode taking a power supply system diagram as a carrier.
A design method for underground power supply of a parametric coal mine uses tree-structured data as a carrier and is used for assisting in designing an underground power supply system and reasonably selecting a type of power supply equipment, and the method comprises the following steps:
step 1: constructing a basic data structure, wherein the basic data structure is used as a basic unit of the tree structure; the basic data structure comprises equipment parameter nodes and cable parameter nodes, wherein the equipment parameter nodes comprise a motor parameter node, a low-voltage switch parameter node, a transformer parameter node and a high-voltage switch parameter node;
step 2: constructing an electromechanical equipment database, a model selection calculation algorithm library and an imaging style template library;
and step 3: motor parameter nodes are recorded as leaf nodes of the tree structure;
and 4, step 4: the low-voltage switch parameter node is used as a father node of the motor parameter node to be accessed, and a setting reference value of the low-voltage switch parameter node is calculated;
and 5: the transformer parameter node is accessed as a father node of the low-voltage switch parameter node, the apparent power of the transformer is calculated, and a proper transformer model is selected;
step 6: the high-voltage switch parameter node is used as a father node of the transformer parameter node to be accessed, and a setting reference value of the high-voltage switch parameter node is calculated;
and 7: calculating short-circuit current, checking the sensitivity of the high-voltage switch and the low-voltage switch, if the sensitivity is unqualified, executing the step 4 to the step 7 again, and if the sensitivity is qualified, executing the step 8;
and 8: calculating voltage loss, and if the voltage loss is unqualified, sequentially executing the steps 4 to 8 again; if the voltage loss is qualified, executing the step 9;
and step 9: forming a downhole power supply system model to form the tree structure; when adding and/or deleting and/or modifying operation is not needed to be carried out on a certain node in the underground power supply system model, executing step 10 and/or step 11; when adding and/or deleting and/or modifying operation needs to be carried out on a certain node in the underground power supply system model, the steps 3-9 are carried out in sequence again;
step 10: automatically generating a preview of the underground power supply system according to parameters in the underground power supply system model according to the mapping style template library;
step 11: and automatically generating a downhole power supply design report according to the parameters in the downhole power supply system model.
Further, the number of the motor parameter nodes is recorded as C1, the number of the low-voltage switch parameter nodes is recorded as C2, the number of the transformer parameter nodes is recorded as C3, and the number of the high-voltage switch parameter nodes is recorded as C4, wherein C1 is more than or equal to C2 and more than or equal to C3 and more than or equal to C4, and C1, C2, C3 and C4 are all natural numbers which are more than or equal to 0.
Further, the step 3 specifically includes the following sub-steps:
substep 31: adding n motor parameter nodes, wherein n is a positive integer;
substep 32: and searching motor attribute data in the electromechanical equipment database, and recording the motor attribute data for each motor parameter node respectively.
Further, the step 4 specifically includes the following sub-steps:
substep 41: adding a low-voltage switch parameter node as a father node in front of a motor parameter node;
substep 42: adding a cable parameter node between each motor parameter node and a father node low-voltage switch parameter node as the motor parameter node;
substep 43: each cable parameter node acquires load statistical information from a corresponding leaf node motor parameter node;
substep 44: inquiring a model selection calculation algorithm library according to the obtained load statistical information to obtain long-term current-carrying information of each cable parameter node;
substep 45: inquiring cable data in a database of the electromechanical equipment, and obtaining the cable sectional area meeting the requirement through long-time current-carrying information;
substep 46: inputting the length of the cable to obtain a cable impedance value;
substep 47: inputting the name of the corresponding father node low-voltage switch parameter node, inquiring an electromechanical device database according to the load statistical information of the leaf node motor parameter node of the father node low-voltage switch parameter node, selecting the corresponding low-voltage switch model, and inquiring a model selection calculation algorithm library to obtain the setting reference value of the corresponding father node low-voltage switch parameter node.
Further, the step 5 specifically includes the following sub-steps:
substep 51: a transformer parameter node is added in front of a low-voltage switch parameter node to serve as a father node;
substep 52: adding a cable parameter node between each low-voltage switch parameter node and a father node transformer parameter node serving as the low-voltage switch parameter node;
substep 53: each cable parameter node acquires load statistical information from the corresponding sub-node low-voltage switch parameter node;
substep 54: each father node transformer parameter node acquires load statistical information from a corresponding cable parameter node;
substep 55: according to the load statistical information of the corresponding father node transformer parameter node, inquiring a model selection calculation algorithm library to obtain apparent power, inquiring an electromechanical equipment database, calculating the apparent power of the transformer, and selecting a proper transformer model.
Further, the step 6 specifically includes the following sub-steps:
substep 61: a high-voltage switch parameter node is added in front of a transformer parameter node to serve as a father node;
substep 62: adding a cable parameter node between each high-voltage switch parameter node and a transformer node serving as a child node of the high-voltage switch parameter node;
substep 63: each cable parameter node acquires load statistical information from the corresponding sub-node transformer parameter node;
substep 64: each high-voltage switch parameter node acquires load statistical information from a corresponding cable parameter node;
substep 65: inputting the system short-circuit capacity of the corresponding high-voltage switch parameter node;
substep 66: and inquiring a model selection calculation algorithm library according to the load statistical information of the high-voltage switch parameter node to obtain a setting reference value of the high-voltage switch parameter node.
Further, the step 7 specifically includes the following sub-steps:
substep 71: and traversing the tree structure formed under the high-voltage switch parameter nodes in a front sequence, and inquiring a model selection calculation algorithm library to obtain the system short-circuit capacity and the short-circuit current value of all nodes in the tree structure formed under the corresponding high-voltage switch parameter nodes.
Substep 72: performing sensitivity check on a switch parameter node in the tree structure according to the short-circuit current value; if the sensitivity is not qualified, the steps 4 to 7 are executed again, and if the sensitivity is qualified, the step 8 is executed.
Further, the step 8 specifically includes the following sub-steps:
substep 81: traversing a tree structure formed under a high-voltage switch parameter node in a front-end manner, and calculating the voltage loss of each branch, wherein the branch is a link in which the high-voltage switch parameter node is used as a root node, a transformer parameter node is used as a primary sub-node, a low-voltage switch parameter node is used as a secondary sub-node, and a motor parameter node is used as a leaf node;
substep 82: inquiring a model selection calculation algorithm library, checking and calculating the branch with the largest voltage loss, and if the voltage loss is unqualified, sequentially executing the step 4 to the step 8 again; and if the voltage loss is qualified, executing the step 9 after forming the model of the underground power supply system.
Further, the step 10 specifically includes the following sub-steps:
substep 101: selecting any node in the underground power supply system model;
substep 102: the selected nodes and all the sub-nodes thereof form a new tree structure;
substep 103: according to the mapping style template library, corresponding the equipment parameter nodes in the new tree structure to equipment symbols, automatically connecting the cable parameter nodes to cable symbols, and drawing the equipment symbols and the cable symbols in a preview graph of the underground power supply system;
substep 104: and (4) adjusting the preview picture by the user according to the requirement, finally exporting the power supply system picture, and saving the power supply system picture as a file or printing the power supply system picture into a drawing.
Further, the step 11 specifically includes the following sub-steps:
substep 111: selecting any node in the power supply system model;
substep 112: the selected nodes and all the sub-nodes thereof form a new tree structure;
substep 113: and reading attribute data of all nodes of the tree structure, and referring to a power supply design template to automatically generate a power supply design report.
The invention has the advantages that:
1. the invention takes the tree-shaped parameter structure as a carrier, does not relate to graph modification: when modification is needed, only the parameters in the tree parameter structure are modified, and the workload is reduced. And the management mode of total graph-sub graph separation is avoided: the parameters of the power supply equipment in the underground central substation, the mining area substation and other areas can be stored in the same tree-shaped parameter structure, and one set of structure contains the electromechanical equipment information of the whole mine.
2. The power supply design model selection calculation result of the invention is updated immediately: when the model is added, deleted and changed, the accuracy of model selection calculation is checked in real time, and the method is safe and reliable.
Drawings
FIG. 1 is a flow chart of a parametric coal mine downhole power supply design method in an embodiment of the invention;
FIG. 2 is a schematic diagram of a tree structure formed by motor parameter nodes, low-voltage switch parameter nodes, transformer parameter nodes and high-voltage switch parameter nodes according to the present invention;
FIG. 3 is a flowchart illustrating the detailed steps of the flowchart of the design method for underground power supply of the parametric coal mine shown in FIG. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1 and fig. 3, the invention provides a design method of a parametric coal mine underground power supply, which uses tree-structured data as a carrier and is used for assisting in designing an underground power supply system and reasonably selecting a type of power supply equipment, and the method comprises the following steps:
step 1: and constructing a basic data structure which is used as a basic unit of the tree structure, wherein the basic data structure is called as a node in the embodiment.
The basic data structure comprises equipment parameter nodes and cable parameter nodes, wherein the equipment parameter nodes comprise a motor parameter node, a low-voltage switch parameter node, a transformer parameter node and a high-voltage switch parameter node. The number of the motor parameter nodes is recorded as C1, the number of the low-voltage switch parameter nodes is recorded as C2, the number of the transformer parameter nodes is recorded as C3, the number of the high-voltage switch parameter nodes is recorded as C4, wherein C1 is more than or equal to C2 and more than or equal to C3 and more than or equal to C4, and C1, C2, C3 and C4 are all natural numbers which are more than or equal to 0.
As shown in fig. 2, the motor parameter node, the low-voltage switch parameter node, the transformer parameter node, and the high-voltage switch parameter node form a tree structure. The motor parameter nodes are leaf nodes (or tail nodes), and the low-voltage switch parameter nodes are father nodes of the motor parameter nodes, however, one or more motor parameter nodes can exist under the low-voltage switch parameter nodes, and the number of the motor parameter nodes connected under one low-voltage switch parameter node is variable. Similarly, the transformer parameter node is a father node of the low-voltage switch parameter node, however, there may be one or more low-voltage switch parameter nodes under the transformer parameter node, and the number of the low-voltage switch parameter nodes connected under one transformer parameter node is variable. The high-voltage switch parameter node is a father node of the transformer parameter node, however, one or more transformer parameter nodes can exist under the high-voltage switch parameter node, and the number of the transformer parameter nodes connected under one high-voltage switch parameter node is variable.
Each high-voltage switch node and all the sub-nodes thereof form a sub-model of the underground power supply system model, and the high-voltage switch node is used as a root node of the sub-model.
The node must contain the following attribute data:
(1) device ID/cable ID as unique identifier;
(2) device model/cable model;
(3) the load statistical information refers to the load information of all motor parameter nodes of a low-voltage subsystem below the node, wherein the low-voltage subsystem refers to a system formed by low-voltage switch parameter nodes and leaf node motor parameter nodes thereof;
(4) loop impedance information including information on all node impedance values from the node to a root node (the root node is a high-voltage switch parameter node);
(5) and short circuit capacity information for storing the system short circuit capacity of the node.
Wherein, the attribute data of the cable parameter node also has to include: 1) a cable length; 2) the cable type.
The attribute data of the motor parameter nodes further includes: 1) rated power; 2) a rated voltage; 3) starting current multiple; 4) the power factor.
The attribute data of the high-voltage switch parameter node and the low-voltage switch parameter node also need to comprise a setting reference value.
Step 2: and constructing a mechatronic device database, a model selection calculation algorithm library and an image forming style template library.
The electromechanical device database must include:
(1) motor attribute data including model, power, rated voltage, power factor, efficiency factor, starting current multiple, etc.;
(2) transformer attribute data including model, rated capacity, primary side rated voltage/current, secondary side rated voltage/current, short circuit loss, impedance voltage drop percentage, etc.;
(3) comprehensive protection attribute data (comprehensive protection device data, referred to as comprehensive protection data for short) comprises a model, a rated capacity, a primary side rated voltage/current, a secondary side rated voltage/current and the like;
(4) cable attribute data including model, voltage class, sectional area, impedance value per kilometer, rated current-carrying capacity and the like;
(5) switch attribute data including model, rated voltage, rated current, etc.; the switch attribute data includes high voltage switch attribute data and low voltage switch attribute data.
The model selection calculation algorithm library must contain the following contents:
(1) and (3) transformer type selection calculation: and obtaining apparent power according to the load statistical information, and further determining the type of the transformer.
(2) And (3) cable type selection calculation: obtaining long-term current carrying according to the load statistical information, comparing the rated current carrying capacity attribute of the cable to obtain the minimum sectional area of the cable, and further determining the model of the cable;
(3) and (3) switch model selection calculation: selecting a proper switch model according to the load statistical information; the switch model selection calculation comprises high-voltage switch model selection calculation and low-voltage switch model selection calculation;
(4) and (3) switch setting calculation: obtaining a setting reference value of the switch according to the load statistical information; the switch setting calculation comprises high-voltage switch setting calculation and low-voltage switch setting calculation.
The mapping style template library comprises:
(1) the drawing direction from the root node to the leaf node, such as the drawing direction of a high-voltage switch parameter node, a transformer parameter node, a low-voltage switch parameter node and a motor parameter node;
(2) a mechatronic symbol, wherein the mechatronic symbol comprises a device symbol and a cable symbol;
(3) the marking style can modify the marking direction, the font size, the marking field and the like;
and step 3: and inputting motor parameter nodes as leaf nodes of the tree structure.
Substep 31: adding n motor parameter nodes (n is the number of motors, and n is a natural number more than or equal to 0);
substep 32: searching motor attribute data in the electromechanical equipment database, and respectively recording the motor attribute data for each motor parameter node;
and 4, step 4: and the low-voltage switch parameter node is accessed as a father node of the motor parameter node, and the setting reference value of the low-voltage switch parameter node is calculated.
Substep 41: adding a low-voltage switch parameter node as a father node in front of a motor parameter node;
substep 42: adding a cable parameter node between each motor parameter node and a parent node low-voltage switch parameter node as the node;
substep 43: each cable parameter node acquires load statistical information from a corresponding leaf node motor node;
substep 44: inquiring a model selection calculation algorithm library according to the obtained load statistical information to obtain long-term current-carrying information of each cable parameter node;
substep 45: inquiring cable data in a database of the electromechanical equipment, and obtaining the cable sectional area meeting the requirement through long-time current-carrying information;
substep 46: inputting the length of the cable to obtain a cable impedance value;
substep 47: inputting the name of the corresponding father node low-voltage switch parameter node, inquiring the electromechanical device database according to the load statistical information, selecting the corresponding low-voltage switch model, inquiring the model selection calculation algorithm library, and obtaining the setting reference value of the corresponding father node low-voltage switch parameter node.
And 5: and the transformer parameter node is accessed as a father node of the low-voltage switch parameter node, and the apparent power of the transformer is calculated.
Substep 51: a transformer parameter node is added in front of a low-voltage switch parameter node to serve as a father node;
substep 52: adding a cable parameter node between each low-voltage switch parameter node and a father node transformer parameter node serving as the low-voltage switch parameter node;
substep 53: each cable parameter node acquires load statistical information from the corresponding sub-node low-voltage switch parameter node;
substep 54: each father node transformer parameter node acquires load statistical information from a corresponding cable parameter node;
substep 55: according to the load statistical information of the corresponding father node transformer parameter node, inquiring a model selection calculation algorithm library to obtain apparent power, inquiring an electromechanical equipment database, calculating the apparent power of the transformer, and selecting a proper transformer model;
step 6: and the high-voltage switch parameter node is accessed as a father node of the transformer parameter node, and the setting reference value of the high-voltage switch parameter node is calculated.
Substep 61: a high-voltage switch parameter node is added in front of a transformer parameter node to serve as a father node;
substep 62: adding a cable parameter node between each high-voltage switch parameter node and a transformer parameter node serving as a child node of the high-voltage switch parameter node;
substep 63: each cable parameter node acquires load statistical information from the corresponding sub-node transformer parameter node;
substep 64: each high-voltage switch parameter node acquires load statistical information from a corresponding cable parameter node;
substep 65: inputting the system short-circuit capacity of the corresponding high-voltage switch parameter node;
substep 66: inquiring a model selection calculation algorithm library according to the load statistical information of the high-voltage switch parameter node to obtain a setting reference value of the high-voltage switch parameter node;
and 7: calculating short-circuit current, checking the sensitivity of the high-voltage switch and the low-voltage switch, if the sensitivity is unqualified, executing the step 4 to the step 7 again, and if the sensitivity is qualified, executing the step 8;
substep 71: and traversing the tree structure formed under the high-voltage switch parameter nodes in a front sequence, and inquiring a model selection calculation algorithm library to obtain the system short-circuit capacity and the short-circuit current value of all nodes in the tree structure formed under the corresponding high-voltage switch parameter nodes.
Substep 72: performing sensitivity check on a switch parameter node in the tree structure according to the short-circuit current value; if the sensitivity is not qualified, re-executing the step 4 to the step 7, and if the sensitivity is qualified, executing the step 8;
and 8: calculating voltage loss, and if the voltage loss is unqualified, sequentially executing the steps 4 to 8 again; if the voltage loss is qualified, executing the step 9;
substep 81: traversing a tree structure formed under a high-voltage switch parameter node in a front-end manner, and calculating the voltage loss of each branch, wherein the branch is a link in which the high-voltage switch parameter node is used as a root node, a transformer parameter node is used as a primary sub-node, a low-voltage switch parameter node is used as a secondary sub-node, and a motor parameter node is used as a leaf node;
substep 82: inquiring a model selection calculation algorithm library, checking and calculating the branch with the largest voltage loss, and if the voltage loss is unqualified, sequentially executing the step 4 to the step 8 again; and if the voltage loss is qualified, executing the step 9 after forming the model of the underground power supply system.
And step 9: forming a downhole power supply system model to form the tree structure; when adding and/or deleting and/or modifying operation is not needed to be carried out on a certain node in the underground power supply system model, executing the step 10; when adding and/or deleting and/or modifying operation needs to be carried out on a certain node in the underground power supply system model, the steps 3-9 are carried out in sequence again;
step 10: optionally, automatically generating a preview of the downhole power supply system according to parameters in the model of the downhole power supply system according to the chart style template library;
substep 101: selecting any node in the underground power supply system model;
substep 102: the selected nodes and all the sub-nodes thereof form a new tree structure; i.e., a new tree structure with the selected node as the root node.
Substep 103: and according to the mapping style template library, corresponding the equipment parameter nodes in the new tree structure to equipment symbols, automatically connecting the cable parameter nodes to cable symbols, and drawing the equipment symbols and the cable symbols in a preview graph of the underground power supply system.
Substep 104: and (4) adjusting the preview picture by the user according to the requirement, finally exporting the power supply system picture, and saving the power supply system picture as a file or printing the power supply system picture into a drawing.
Step 11: optionally, a downhole power supply design report is automatically generated according to the parameters in the downhole power supply system model.
Substep 111: any node in the downhole power system model is selected.
Substep 112: the selected nodes and all the sub-nodes thereof form a new tree structure; i.e., a new tree structure with the selected node as the root node.
Substep 113: and reading attribute data of all nodes of the tree structure, and referring to a power supply design template to automatically generate a power supply design report.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
For the system embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The method for designing the underground power supply of the parametric coal mine provided by the application is introduced in detail, a specific example is applied in the method to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. A design method for power supply under a parametric coal mine well is characterized in that the method takes tree-structured data as a carrier and is used for assisting in designing an underground power supply system and reasonably selecting the type of power supply equipment, and the method comprises the following steps:
step 1: constructing a basic data structure, wherein the basic data structure is used as a basic unit of the tree structure; the basic data structure comprises equipment parameter nodes and cable parameter nodes, wherein the equipment parameter nodes comprise a motor parameter node, a low-voltage switch parameter node, a transformer parameter node and a high-voltage switch parameter node;
step 2: constructing an electromechanical equipment database, a model selection calculation algorithm library and an imaging style template library;
and step 3: motor parameter nodes are recorded as leaf nodes of the tree structure;
and 4, step 4: the low-voltage switch parameter node is used as a father node of the motor parameter node to be accessed, and a setting reference value of the low-voltage switch parameter node is calculated;
and 5: the transformer parameter node is accessed as a father node of the low-voltage switch parameter node, the apparent power of the transformer is calculated, and a proper transformer model is selected;
step 6: the high-voltage switch parameter node is used as a father node of the transformer parameter node to be accessed, and a setting reference value of the high-voltage switch parameter node is calculated;
and 7: calculating short-circuit current, checking the sensitivity of the high-voltage switch and the low-voltage switch, if the sensitivity is unqualified, executing the step 4 to the step 7 again, and if the sensitivity is qualified, executing the step 8;
and 8: calculating voltage loss, and if the voltage loss is unqualified, sequentially executing the steps 4 to 8 again; if the voltage loss is qualified, executing the step 9;
and step 9: forming a downhole power supply system model to form the tree structure; when adding and/or deleting and/or modifying operation is not needed to be carried out on a certain node in the underground power supply system model, executing step 10 and/or step 11; when adding and/or deleting and/or modifying operation needs to be carried out on a certain node in the underground power supply system model, the steps 3-9 are carried out in sequence again;
step 10: automatically generating a preview of the underground power supply system according to parameters in the underground power supply system model according to the mapping style template library;
step 11: automatically generating a downhole power supply design report according to parameters in the downhole power supply system model;
wherein, step 10 includes:
substep 101: selecting any node in the underground power supply system model;
substep 102: the selected nodes and all the sub-nodes thereof form a new tree structure; the new tree structure is a tree structure taking the selected node as a root node;
substep 103: according to the mapping style template library, corresponding the equipment parameter nodes in the new tree structure to equipment symbols, automatically connecting the cable parameter nodes to cable symbols, and automatically drawing the equipment symbols and the cable symbols in a preview graph of the underground power supply system;
substep 104: and (4) adjusting the preview picture by the user according to the requirement, finally exporting the power supply system picture, and saving the power supply system picture as a file or printing the power supply system picture into a drawing.
2. The method as claimed in claim 1, wherein the number of the motor parameter nodes is recorded as C1, the number of the low-voltage switch parameter nodes is recorded as C2, the number of the transformer parameter nodes is recorded as C3, and the number of the high-voltage switch parameter nodes is recorded as C4, wherein C1 is not less than C2 and not less than C3 and not less than C4, and C1, C2, C3 and C4 are all natural numbers which are not less than 0.
3. The method according to claim 1, characterized in that said step 3 comprises in particular the sub-steps of:
substep 31: adding n motor parameter nodes, wherein n is a positive integer;
substep 32: and searching motor attribute data in the electromechanical equipment database, and recording the motor attribute data for each motor parameter node respectively.
4. The method according to claim 1, characterized in that said step 4 comprises in particular the sub-steps of:
substep 41: adding a low-voltage switch parameter node as a father node in front of a motor parameter node;
substep 42: adding a cable parameter node between each motor parameter node and a father node low-voltage switch parameter node as the motor parameter node;
substep 43: each cable parameter node acquires load statistical information from a corresponding leaf node motor parameter node;
substep 44: inquiring a model selection calculation algorithm library according to the obtained load statistical information to obtain long-term current-carrying information of each cable parameter node;
substep 45: inquiring cable data in a database of the electromechanical equipment, and obtaining the cable sectional area meeting the requirement through long-time current-carrying information;
substep 46: inputting the length of the cable to obtain a cable impedance value;
substep 47: inputting the name of the corresponding father node low-voltage switch parameter node, inquiring an electromechanical device database according to the load statistical information of the leaf node motor parameter node of the father node low-voltage switch parameter node, selecting the corresponding low-voltage switch model, and inquiring a model selection calculation algorithm library to obtain the setting reference value of the corresponding father node low-voltage switch parameter node.
5. The method according to claim 1, characterized in that said step 5 comprises in particular the sub-steps of:
substep 51: a transformer parameter node is added in front of a low-voltage switch parameter node to serve as a father node;
substep 52: adding a cable parameter node between each low-voltage switch parameter node and a father node transformer parameter node serving as the low-voltage switch parameter node;
substep 53: each cable parameter node acquires load statistical information from the corresponding sub-node low-voltage switch parameter node;
substep 54: each father node transformer parameter node acquires load statistical information from a corresponding cable parameter node;
substep 55: according to the load statistical information of the corresponding father node transformer parameter node, inquiring a model selection calculation algorithm library to obtain apparent power, inquiring an electromechanical equipment database, calculating the apparent power of the transformer, and selecting a proper transformer model.
6. The method according to claim 1, characterized in that said step 6 comprises in particular the following sub-steps:
substep 61: a high-voltage switch parameter node is added in front of a transformer parameter node to serve as a father node;
substep 62: adding a cable parameter node between each high-voltage switch parameter node and a transformer node serving as a child node of the high-voltage switch parameter node;
substep 63: each cable parameter node acquires load statistical information from the corresponding sub-node transformer parameter node;
substep 64: each high-voltage switch parameter node acquires load statistical information from a corresponding cable parameter node;
substep 65: inputting the system short-circuit capacity of the corresponding high-voltage switch parameter node;
substep 66: and inquiring a model selection calculation algorithm library according to the load statistical information of the high-voltage switch parameter node to obtain a setting reference value of the high-voltage switch parameter node.
7. The method according to claim 1, characterized in that said step 7 comprises in particular the sub-steps of:
substep 71: traversing the tree structure formed under the high-voltage switch parameter nodes in a front-end manner, and inquiring a model selection calculation algorithm library to obtain the system short-circuit capacity and the short-circuit current value of all nodes in the tree structure formed under the corresponding high-voltage switch parameter nodes;
substep 72: performing sensitivity check on a switch parameter node in the tree structure according to the short-circuit current value; if the sensitivity is not qualified, the steps 4 to 7 are executed again, and if the sensitivity is qualified, the step 8 is executed.
8. The method according to claim 1, characterized in that said step 8 comprises in particular the sub-steps of:
substep 81: traversing a tree structure formed under a high-voltage switch parameter node in a front-end manner, and calculating the voltage loss of each branch, wherein the branch is a link in which the high-voltage switch parameter node is used as a root node, a transformer parameter node is used as a primary sub-node, a low-voltage switch parameter node is used as a secondary sub-node, and a motor parameter node is used as a leaf node;
substep 82: inquiring a model selection calculation algorithm library, checking and calculating the branch with the largest voltage loss, and if the voltage loss is unqualified, sequentially executing the step 4 to the step 8 again; and if the voltage loss is qualified, executing the step 9 after forming the model of the underground power supply system.
9. The method according to claim 1, characterized in that said step 11 comprises in particular the sub-steps of:
substep 111: selecting any node in the power supply system model;
substep 112: the selected nodes and all the sub-nodes thereof form a new tree structure;
substep 113: and reading attribute data of all nodes of the tree structure, and referring to a power supply design template to automatically generate a power supply design report.
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