CN116595793A - Method, device, equipment and storage medium for constructing circuit model of bypass cable - Google Patents
Method, device, equipment and storage medium for constructing circuit model of bypass cable Download PDFInfo
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/04—Power grid distribution networks
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Abstract
The application discloses a method, a device, equipment and a storage medium for constructing a circuit model of a bypass cable, wherein the method comprises the following steps: selecting an equivalent circuit for constructing a circuit model of a bypass cable, calculating the phase difference of voltages at two ends of the bypass cable when the circuit model is constructed by N equivalent circuits, taking the phase difference as a first phase difference, calculating the phase difference of voltages at two ends of the bypass cable when the circuit model is constructed by n+1 equivalent circuits, taking the difference of the second phase difference and the first phase difference as a second phase difference, taking the difference of the second phase difference and the first phase difference as a third phase difference, calculating the ratio of the third phase difference and the first phase difference, determining the value N of N based on the ratio of the third phase difference and the first phase difference, and taking the circuit model constructed by the N equivalent circuits as the circuit model of the bypass cable. The application can rapidly determine the quantity of equivalent circuits of the circuit model for constructing the bypass cable, ensures that the error of the circuit model is as small as possible, and reduces the calculated quantity.
Description
Technical Field
The present application relates to circuit modeling technology, and in particular, to a method, apparatus, device, and storage medium for constructing a circuit model of a bypass cable.
Background
When the distribution network is required to be maintained or some circuit equipment is required to be replaced, a temporary bypass cable is quickly installed on site, a fault or a line section to be overhauled is bridged, and then a power supply is led to the temporary bypass cable through bypass switch operation, so that uninterrupted power supply for a user is ensured. Meanwhile, by means of the bypass cable system, the quality and the efficiency of power supply can be effectively guaranteed in the live working process of the distribution network, and the stability and the safety performance of the whole power system are further improved.
The bypass cable can appear voltage drop phenomenon in the course of working, and voltage drop phenomenon threatens the safe operation of bypass maintenance system always, and bypass cable both ends are likely to make bypass cable access maintenance overhead line failure because the voltage phase difference that capacitive current produced. Therefore, it is urgently required to build an accurate circuit model of the bypass cable in order to theoretically analyze the voltage phase shift phenomenon of the bypass cable.
The existing circuit model construction method of the bypass cable has the problems that the calculation error of the voltage phases at the head end and the tail end of the bypass cable is large, and the result is not converged due to the large calculation amount.
Disclosure of Invention
The application provides a method, a device, equipment and a storage medium for constructing a circuit model of a bypass cable, which are used for reducing errors of the circuit model and reducing calculated amount.
In a first aspect, the present application provides a method for constructing a circuit model of a bypass cable, including:
selecting an equivalent circuit for constructing a circuit model of a bypass cable, wherein the circuit model of the bypass cable is formed by connecting a plurality of equivalent circuits in series;
calculating the phase difference of the voltages at two ends of the bypass cable as a first phase difference when a circuit model is constructed by n equivalent circuits;
calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference when a circuit model is constructed by n+1 equivalent circuits;
calculating a difference between the second phase difference and the first phase difference as a third phase difference;
calculating a ratio of the third phase difference to the first phase difference;
and determining a value N of N based on the ratio of the third phase difference to the first phase difference, and taking a circuit model constructed by N equivalent circuits as a circuit model of the bypass cable.
Optionally, the equivalent circuit is a pi-shaped equivalent circuit, and the pi-shaped equivalent circuit includes a resistor, an inductor, a first capacitor and a second capacitor;
the first end of the resistor is used as the input end of the pi-shaped equivalent circuit, the second end of the resistor is connected with the first end of the inductor, and the second end of the inductor is used as the output end of the pi-shaped equivalent circuit;
the first end of the first capacitor is connected with the first end of the resistor, and the second end of the first capacitor is grounded;
the first end of the second capacitor is connected with the second end of the inductor, and the second end of the second capacitor is grounded.
Optionally, calculating a phase difference of voltages at two ends of the bypass cable when a circuit model is constructed by n equivalent circuits, as a first phase difference, includes:
calculating the phase difference of the voltages of the input end and the output end of the single equivalent circuit as a unit phase difference when a circuit model is built by n equivalent circuits;
and calculating the product of n and the unit phase difference to obtain a first phase difference.
Optionally, when the circuit model is constructed by n equivalent circuits, a formula of a phase difference between voltages at an input end and an output end of each equivalent circuit is as follows:
wherein θ n The phase difference is the unit phase difference, C is the capacitance value of the first capacitor and the second capacitor, L is the inductance value of the inductor, R is the resistance value of the resistor, and omega is the angular frequency of the voltage transmitted on the bypass cable.
Optionally, calculating the phase difference of the voltages at two ends of the bypass cable when the circuit model is constructed by n+1 equivalent circuits, as the second phase difference, includes:
calculating the phase difference of the voltages of the input end and the output end of the single equivalent circuit as a unit phase difference when a circuit model is constructed by n+1 equivalent circuits;
and calculating the product of n+1 and the unit phase difference to obtain a second phase difference.
Optionally, when a circuit model is constructed by n+1 equivalent circuits, a formula of a phase difference between voltages at an input end and an output end of each equivalent circuit is as follows:
wherein θ n+1 The phase difference is the unit phase difference, C is the capacitance value of the first capacitor and the second capacitor, L is the inductance value of the inductor, R is the resistance value of the resistor, and omega is the angular frequency of the voltage transmitted on the bypass cable.
Optionally, determining the value N of N based on the ratio of the third phase difference to the first phase difference includes:
and enabling the ratio of the third phase difference to the first phase difference to be smaller than or equal to a preset phase deviation rate, and solving the value N of N.
In a second aspect, the present application also provides a circuit model construction device for a bypass cable, including:
the equivalent circuit selection module is used for selecting an equivalent circuit for constructing a circuit model of the bypass cable, wherein the circuit model of the bypass cable is formed by connecting a plurality of equivalent circuits in series;
the first phase difference calculation module is used for calculating the phase difference of the voltages at two ends of the bypass cable when the circuit model is built by n equivalent circuits and taking the phase difference as a first phase difference;
the second phase difference calculation module is used for calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference when a circuit model is built by n+1 equivalent circuits;
a third phase difference calculation module, configured to calculate a difference between the second phase difference and the first phase difference as a third phase difference;
the ratio calculating module is used for calculating the ratio of the third phase difference to the first phase difference;
and the circuit model determining module is used for determining the value N of N based on the ratio of the third phase difference to the first phase difference, and taking the circuit models constructed by the N equivalent circuits as the circuit model of the bypass cable.
In a third aspect, the present application also provides an electronic device, including:
one or more processors;
a memory for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement a circuit model building method for bypass cables as provided in the first aspect of the present application.
In a fourth aspect, the present application also provides a computer-readable storage medium having stored therein computer-executable instructions which, when executed by a processor, are adapted to implement a circuit model construction method for a bypass cable as provided in the first aspect of the present application.
The application provides a circuit model construction method of a bypass cable, which comprises the following steps: selecting an equivalent circuit for constructing a circuit model of a bypass cable, wherein the circuit model of the bypass cable is formed by connecting a plurality of equivalent circuits in series, calculating the phase difference of voltages at two ends of the bypass cable when the circuit model is constructed by N equivalent circuits, taking the phase difference of the voltages at two ends of the bypass cable as a first phase difference, calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference, calculating the difference of the second phase difference and the first phase difference as a third phase difference, calculating the ratio of the third phase difference and the first phase difference, determining the value N of N based on the ratio of the third phase difference and the first phase difference, and taking the circuit model constructed by the N equivalent circuits as the circuit model of the bypass cable. The application can rapidly determine the quantity of equivalent circuits of the circuit model for constructing the bypass cable, ensures that the error of the circuit model is as small as possible, and reduces the calculated quantity.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the application or to delineate the scope of the application. Other features of the present application will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for constructing a circuit model of a bypass cable according to an embodiment of the present application;
fig. 2 is a circuit diagram of a pi-type equivalent circuit according to an embodiment of the present application;
FIG. 3 is a schematic diagram of n series connected pi-type equivalent circuits;
fig. 4 is a schematic structural diagram of a circuit model construction device for a bypass cable according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In a conventional power system, a plurality of equivalent circuits connected in series are often used as a circuit model of a bypass cable, but for calculation of a whole long circuit, if the calculation is simplified into only one equivalent circuit, huge errors are brought; if the long line is decomposed into serial connection of infinite equivalent circuits, the calculation amount is too large.
Aiming at the problems, the embodiment of the application provides a circuit model construction method of a bypass cable, which can solve the number of optimal equivalent circuits, ensure that the error of the circuit model is as small as possible and reduce the calculated amount. Fig. 1 is a flowchart of a method for constructing a circuit model of a bypass cable according to an embodiment of the present application, where the method may be applicable to a case of solving an optimal solution of a number of medium-value circuits in a circuit model of a bypass cable, and the method may be performed by a device for constructing a circuit model of a bypass cable according to an embodiment of the present application, where the device may be implemented by software and/or hardware, and is generally configured in an electronic device, and as shown in fig. 1, the method for constructing a circuit model of a bypass cable specifically includes the following steps:
s101, selecting an equivalent circuit for constructing a circuit model of the bypass cable, wherein the circuit model for constructing the bypass cable is formed by connecting a plurality of equivalent circuits in series.
The equivalent circuit means that a part of a complex structure in the circuit is replaced by a relatively simple structure, and the circuit after replacement and the original circuit keep the same action and effect on the untransformed part (or called external circuit).
To simplify the calculation, the bypass cable can be reduced to an equivalent circuit consisting of resistance, inductance, capacitance, etc. In the embodiment of the application, different equivalent circuits can be selected for the transmission distance of the bypass cable, for example, the capacitance to ground can be ignored for the short-distance bypass cable, so that the equivalent circuit formed by serially connecting resistors and inductors can be selected, and the capacitance to ground can not be ignored for the middle-distance bypass cable, so that the pi-type equivalent circuit can be selected.
Illustratively, in a specific embodiment of the present application, a medium-long distance 35kV bypass cable is taken as an example, and the medium-long distance bypass cable may be selected to construct a circuit model.
Fig. 2 is a circuit diagram of a pi-type equivalent circuit according to an embodiment of the present application, where, as shown in fig. 2, the pi-type equivalent circuit includes a resistor R1, an inductor L1, a first capacitor C1 and a second capacitor C2.
The first end of the resistor R1 is used as the input end of the pi-shaped equivalent circuit, the second end of the resistor R1 is connected with the first end of the inductor L1, and the second end of the inductor L1 is used as the output end of the pi-shaped equivalent circuit. The first end of the first capacitor C1 is connected with the first end of the resistor R1, and the second end of the first capacitor C2 is grounded. The first end of the second capacitor C2 is connected to the second end of the inductor L1, and the second end of the second capacitor C2 is grounded. Illustratively, in the embodiment of the present application, the capacitance values of the first capacitor C1 and the second capacitor C2 are equal.
S102, calculating the phase difference of voltages at two ends of the bypass cable as a first phase difference when a circuit model is built by n equivalent circuits.
Fig. 3 is a schematic diagram of n series n-type equivalent circuits, as shown in fig. 3, in the embodiment of the present application, assuming that the bypass cable is split into n parts, and each part is equivalent to one n-type equivalent circuit, the circuit model of the bypass cable is n series n-type equivalent circuits. When a circuit model is constructed by n equivalent circuits, the phase difference of the voltages at both ends of the bypass cable is calculated as a first phase difference.
For example, the phase difference of the voltages at the input end and the output end of each pi-type equivalent circuit can be calculated according to the circuit parameter of each pi-type equivalent circuit, and the phase difference is used as a unit phase difference, and then the product of n and the unit phase difference is calculated to obtain a first phase difference.
Among n equivalent circuits connected in series, the calculation formula of the unit phase difference of each n equivalent circuit is as follows:
wherein θ n ' is a unit phase difference, C is the capacitance value of the first capacitor C1 and the second capacitor C2, L is the inductance value of the inductor L1, R is the resistance value of the resistor R1, and omega is the angular frequency of the voltage transmitted on the bypass cable.
The first phase difference is calculated as:
s103, calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference when a circuit model is built by n+1 equivalent circuits.
In the embodiment of the application, the bypass cable is divided into n+1 parts, and each part is equivalent to a n-type equivalent circuit, so that the circuit model of the bypass cable is n+1 n-type equivalent circuits connected in series. And calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference when a circuit model is constructed by n+1 equivalent circuits.
For example, the phase difference between the voltages at the input end and the output end of each pi-type equivalent circuit can be calculated according to the circuit parameters of each pi-type equivalent circuit, and the phase difference is used as a unit phase difference, and then the product of n+1 and the unit phase difference is calculated to obtain a second phase difference.
In n+1 n-type equivalent circuits connected in series, the calculation formula of the unit phase difference of each n-type equivalent circuit is as follows:
wherein θ n+1 The phase difference is the unit phase difference, C is the capacitance value of the first capacitor and the second capacitor, L is the inductance value of the inductor, R is the resistance value of the resistor, and omega is the angular frequency of the voltage transmitted on the bypass cable.
The second phase difference is calculated as:
s104, calculating a difference value between the second phase difference and the first phase difference as a third phase difference.
Illustratively, the second phase difference is different from the first phase difference by:
s105, calculating the ratio of the third phase difference to the first phase difference.
Illustratively, the ratio of the third phase difference to the first phase difference is:
s106, determining a value N of N based on the ratio of the third phase difference to the first phase difference, and taking a circuit model constructed by the N equivalent circuits as a circuit model of the bypass cable.
In some embodiments of the present application, the ratio of the third phase difference to the first phase difference is made smaller than or equal to a preset phase deviation rate, and the value N of N is solved. When the third phase difference is equal to the third phase differenceWhen the ratio of a phase difference is smaller than or equal to the preset phase deviation ratio, the phase deviation error is extremely small, and can be considered as negligible, and the calculated result under N equal parts is not much different from the calculated result under N+1 equal parts. In actual calculation, the cable is divided into N equal parts, and further equally dividing is not needed, so that the calculated amount is reduced, and meanwhile, the accuracy of a calculated result can be ensured. Exemplary, let theAn inequality equation for N where C, R, L, ω are both known quantities, therefore, the extremum for N can be found, taken and rounded to N.
The circuit model construction method of the bypass cable provided by the embodiment of the application comprises the following steps: selecting an equivalent circuit for constructing a circuit model of a bypass cable, wherein the circuit model of the bypass cable is formed by connecting a plurality of equivalent circuits in series, calculating the phase difference of voltages at two ends of the bypass cable when the circuit model is constructed by N equivalent circuits, taking the phase difference of the voltages at two ends of the bypass cable as a first phase difference, calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference, calculating the difference of the second phase difference and the first phase difference as a third phase difference, calculating the ratio of the third phase difference and the first phase difference, determining the value N of N based on the ratio of the third phase difference and the first phase difference, and taking the circuit model constructed by the N equivalent circuits as the circuit model of the bypass cable. The application can rapidly determine the quantity of equivalent circuits of the circuit model for constructing the bypass cable, ensures that the error of the circuit model is as small as possible, and reduces the calculated quantity.
Fig. 4 is a schematic structural diagram of a circuit model construction device for a bypass cable according to an embodiment of the present application, where, as shown in fig. 4, the circuit model construction device for a bypass cable includes:
an equivalent circuit selecting module 201, configured to select an equivalent circuit for constructing a circuit model of a bypass cable, where the circuit model of the bypass cable is formed by connecting a plurality of equivalent circuits in series;
a first phase difference calculation module 202, configured to calculate, as a first phase difference, a phase difference of voltages at two ends of the bypass cable when a circuit model is constructed by n equivalent circuits;
a second phase difference calculation module 203, configured to calculate, as a second phase difference, a phase difference of voltages at two ends of the bypass cable when a circuit model is constructed by n+1 equivalent circuits;
a third phase difference calculating module 204, configured to calculate a difference between the second phase difference and the first phase difference as a third phase difference;
a ratio calculating module 205, configured to calculate a ratio of the third phase difference to the first phase difference;
the circuit model determining module 206 is configured to determine a value N of N based on a ratio of the third phase difference to the first phase difference, and use a circuit model constructed by N equivalent circuits as a circuit model of the bypass cable.
In some embodiments of the present application, the equivalent circuit is a pi-type equivalent circuit, and the pi-type equivalent circuit includes a resistor, an inductor, a first capacitor, and a second capacitor;
the first end of the resistor is used as the input end of the pi-shaped equivalent circuit, the second end of the resistor is connected with the first end of the inductor, and the second end of the inductor is used as the output end of the pi-shaped equivalent circuit;
the first end of the first capacitor is connected with the first end of the resistor, and the second end of the first capacitor is grounded;
the first end of the second capacitor is connected with the second end of the inductor, and the second end of the second capacitor is grounded.
In some embodiments of the present application, the first phase difference calculation module 202 includes:
the first calculation unit is used for calculating the phase difference of the voltages of the input end and the output end of the single equivalent circuit as a unit phase difference when the circuit model is built by n equivalent circuits;
and the second calculating unit is used for calculating the product of n and the unit phase difference to obtain a first phase difference.
In some embodiments of the present application, when a circuit model is constructed by n equivalent circuits, a formula of a phase difference between voltages at an input end and an output end of each equivalent circuit is as follows:
wherein θ n The phase difference is the unit phase difference, C is the capacitance value of the first capacitor and the second capacitor, L is the inductance value of the inductor, R is the resistance value of the resistor, and omega is the angular frequency of the voltage transmitted on the bypass cable.
In some embodiments of the present application, the second phase difference calculation module 203 includes:
a third calculation unit, configured to calculate, as a unit phase difference, a phase difference of voltages at an input end and an output end of a single equivalent circuit when a circuit model is constructed by n+1 equivalent circuits;
and a fourth calculation unit, configured to calculate a product of n+1 and the unit phase difference, to obtain a second phase difference.
In some embodiments of the present application, when a circuit model is constructed by n+1 equivalent circuits, a formula of a phase difference between voltages at an input end and an output end of each equivalent circuit is as follows:
wherein θ n+1 The phase difference is the unit phase difference, C is the capacitance value of the first capacitor and the second capacitor, L is the inductance value of the inductor, R is the resistance value of the resistor, and omega is the angular frequency of the voltage transmitted on the bypass cable.
In some embodiments of the application, the circuit model determination module 206 includes:
the solving unit is used for enabling the ratio of the third phase difference to the first phase difference to be smaller than or equal to a preset phase deviation rate and solving the value N of N.
The bypass cable circuit model construction device can execute the bypass cable circuit model construction method provided by the embodiment of the application, and has the corresponding functional modules and beneficial effects of executing the bypass cable circuit model construction method.
Fig. 5 is a schematic diagram of an electronic device provided by an embodiment of the present application, which is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the applications described and/or claimed herein.
As shown in fig. 5, the electronic device includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 can perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device can also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
A number of components in the electronic device are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the bypass cable circuit model building method.
In some embodiments, the circuit model building method of the bypass cable may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the above-described circuit model building method of the bypass cable may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the circuit model building method of the bypass cable in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present application may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present application, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
The embodiments of the present application also provide a computer program product comprising a computer program which, when executed by a processor, implements a method of circuit model construction of a bypass cable as provided by any of the embodiments of the present application.
Computer program product in the implementation, the computer program code for carrying out operations of the present application may be written in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present application may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present application are achieved, and the present application is not limited herein.
The above embodiments do not limit the scope of the present application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application.
Claims (10)
1. A method of constructing a circuit model for a bypass cable, comprising:
selecting an equivalent circuit for constructing a circuit model of a bypass cable, wherein the circuit model of the bypass cable is formed by connecting a plurality of equivalent circuits in series;
calculating the phase difference of the voltages at two ends of the bypass cable as a first phase difference when a circuit model is constructed by n equivalent circuits;
calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference when a circuit model is constructed by n+1 equivalent circuits;
calculating a difference between the second phase difference and the first phase difference as a third phase difference;
calculating a ratio of the third phase difference to the first phase difference;
and determining a value N of N based on the ratio of the third phase difference to the first phase difference, and taking a circuit model constructed by N equivalent circuits as a circuit model of the bypass cable.
2. The method for constructing a circuit model of a bypass cable according to claim 1, wherein the equivalent circuit is a pi-type equivalent circuit, and the pi-type equivalent circuit comprises a resistor, an inductor, a first capacitor and a second capacitor;
the first end of the resistor is used as the input end of the pi-shaped equivalent circuit, the second end of the resistor is connected with the first end of the inductor, and the second end of the inductor is used as the output end of the pi-shaped equivalent circuit;
the first end of the first capacitor is connected with the first end of the resistor, and the second end of the first capacitor is grounded;
the first end of the second capacitor is connected with the second end of the inductor, and the second end of the second capacitor is grounded.
3. The circuit model construction method of the bypass cable according to claim 2, wherein calculating a phase difference of voltages across the bypass cable when constructing a circuit model from n of the equivalent circuits, as a first phase difference, comprises:
calculating the phase difference of the voltages of the input end and the output end of the single equivalent circuit as a unit phase difference when a circuit model is built by n equivalent circuits;
and calculating the product of n and the unit phase difference to obtain a first phase difference.
4. The method for constructing a circuit model of a bypass cable according to claim 2, wherein when a circuit model is constructed from n equivalent circuits, a formula for calculating a phase difference between voltages at an input terminal and an output terminal of each equivalent circuit is:
wherein θ n The phase difference is the unit phase difference, C is the capacitance value of the first capacitor and the second capacitor, L is the inductance value of the inductor, R is the resistance value of the resistor, and R is the angular frequency of the voltage transmitted on the bypass cable.
5. The method of constructing a circuit model of a bypass cable according to claim 2, wherein calculating a phase difference of voltages across the bypass cable when constructing a circuit model from n+1 of the equivalent circuits, as a second phase difference, comprises:
calculating the phase difference of the voltages of the input end and the output end of the single equivalent circuit as a unit phase difference when a circuit model is constructed by n+1 equivalent circuits;
and calculating the product of n+1 and the unit phase difference to obtain a second phase difference.
6. The method for constructing a circuit model of a bypass cable according to claim 5, wherein when a circuit model is constructed by n+1 equivalent circuits, a formula of a phase difference between voltages at an input terminal and an output terminal of each equivalent circuit is:
wherein θ n+1 The phase difference is the unit phase difference, C is the capacitance value of the first capacitor and the second capacitor, L is the inductance value of the inductor, R is the resistance value of the resistor, and omega is the angular frequency of the voltage transmitted on the bypass cable.
7. The circuit model construction method of a bypass cable according to claim 1, wherein determining the value N of N based on the ratio of the third phase difference to the first phase difference includes:
and enabling the ratio of the third phase difference to the first phase difference to be smaller than or equal to a preset phase deviation rate, and solving the value N of N.
8. A circuit model construction device of a bypass cable, comprising:
the equivalent circuit selection module is used for selecting an equivalent circuit for constructing a circuit model of the bypass cable, wherein the circuit model of the bypass cable is formed by connecting a plurality of equivalent circuits in series;
the first phase difference calculation module is used for calculating the phase difference of the voltages at two ends of the bypass cable when the circuit model is built by n equivalent circuits and taking the phase difference as a first phase difference;
the second phase difference calculation module is used for calculating the phase difference of the voltages at two ends of the bypass cable as a second phase difference when a circuit model is built by n+1 equivalent circuits;
a third phase difference calculation module, configured to calculate a difference between the second phase difference and the first phase difference as a third phase difference;
the ratio calculating module is used for calculating the ratio of the third phase difference to the first phase difference;
and the circuit model determining module is used for determining the value N of N based on the ratio of the third phase difference to the first phase difference, and taking the circuit models constructed by the N equivalent circuits as the circuit model of the bypass cable.
9. An electronic device, comprising:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, causes the one or more processors to implement the circuit model building method of the bypass cable of any one of claims 1-7.
10. A computer readable storage medium, wherein computer executable instructions are stored in the computer readable storage medium, which when executed by a processor is adapted to implement the method for constructing a circuit model of a bypass cable according to any one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310626239.9A CN116595793A (en) | 2023-05-30 | 2023-05-30 | Method, device, equipment and storage medium for constructing circuit model of bypass cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310626239.9A CN116595793A (en) | 2023-05-30 | 2023-05-30 | Method, device, equipment and storage medium for constructing circuit model of bypass cable |
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| CN202310626239.9A Pending CN116595793A (en) | 2023-05-30 | 2023-05-30 | Method, device, equipment and storage medium for constructing circuit model of bypass cable |
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| CN (1) | CN116595793A (en) |
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- 2023-05-30 CN CN202310626239.9A patent/CN116595793A/en active Pending
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