Multi-source multi-loop complex power distribution network operation training simulation teaching platform and method

Abstract

The invention relates to the technical field of electric power system teaching, in particular to a multi-source multi-loop complex power distribution network operation training simulation teaching platform and method.The multi-source multi-loop complex power distribution network operation training simulation teaching platform comprises a user management module, a simulation module and a graphic display module, and the user management module stores and verifies identity information of operators; the simulation module is used for simulating the power distribution network to obtain a simulation result; the graphic display module is used for mapping and displaying the simulation result; according to the invention, the network topology structure, the network operation parameters, the working principle of distribution network automation and the fault self-recovery working process of the multi-source multi-loop complex power distribution network are visually and vividly displayed, so that a foundation is laid for operation and maintenance management of new on-duty system maintenance personnel; therefore, the problem that the working principle of a multi-source multi-loop power supply and distribution network is relatively complex and inconvenient for training of power distribution operation and maintenance personnel is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power system teaching, and in particular to a multi-source and multi-circuit complex distribution network operation training simulation teaching platform and method. Background Art

[0002] The power system is an important infrastructure and material guarantee for promoting economic development and social progress. It is usually composed of many links such as power generation, transformation, power supply, and distribution. Among them, the power supply and distribution network is the key element to realize all aspects of power distribution and communication. Therefore, the power supply reliability of the network is self-evidently important for the stable operation of the entire power system. The power supply reliability of the power supply and distribution network refers to the ability to ensure the continuous stable operation and safe and reliable power supply of the power system. The current national standard stipulates that the power supply reliability rate in general urban areas in my country is above 99.9%, and that in important urban center areas can reach above 99.99%, while the power supply reliability requirement for important loads such as military facilities, hospitals, and communications is above 99.999%.

[0003] In order to ensure the reliability of power supply for important loads, a "multi-source" and "multi-circuit" power supply and distribution network is usually adopted. "Multi-source" means that multiple power sources are set up in the distribution network, including: the network is powered by multiple mains power sources from different upper-level substations; a diesel generator set is set up in a substation or switch station at a certain level in the network, and once the mains power supply is interrupted, the diesel generator set can be started to continuously supply power to the network. "Multi-circuit" means that the distribution network is set up in a ring structure, including: each load can be powered separately from the left and right directions of any circuit, and when a single side fails, the distribution network automation system can automatically transfer power from the other side. A contact switch is set between the load circuits. If a power failure occurs on both sides of a circuit at the same time, the distribution network automation system closes the corresponding contact switch to restore power to the circuit.

[0004] The above-mentioned multi-source and multi-circuit distribution network has greatly improved the reliability of power supply to power loads, but it also has the characteristics of complex topology, a large number of switches, and wide distribution of equipment. It brings many difficulties for personnel engaged in the automation operation and maintenance management of distribution networks, especially new operators, to understand its basic principles and working processes; the complex multi-source and multi-circuit distribution network involves various equipment such as high and low voltage switchgear, reactive compensation cabinets, PT cabinets in substations of different voltage levels, diesel generator sets, switch stations and switch stations. The number of equipment is large and the distribution distance is wide. It is difficult for newly employed distribution network operation and maintenance managers to intuitively understand the working principles and topological relationships from the overall perspective. Distribution network automation is the core to ensure the high power supply reliability of multi-source and multi-circuit distribution networks. Multi-source and multi-circuit distribution networks involve numerous equipment, complex operation and maintenance parameters, and multiple distribution network automation operation modes. It is difficult for newly employed distribution network operation and maintenance managers to intuitively obtain the key operating parameters of power supply nodes from the overall perspective, understand and master the working principles of distribution network automation, and the isolation, transfer, and self-healing workflow of power grid faults. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-source and multi-circuit complex distribution network operation training simulation teaching platform and method, aiming to solve the problem that the working principle of the multi-source and multi-circuit power supply and distribution network is relatively complicated and inconvenient for the training of distribution operation and maintenance personnel.

[0006] To achieve the above-mentioned object, in a first aspect, the present invention provides a multi-source multi-circuit complex distribution network operation training simulation teaching platform, comprising a user management module, a simulation module and a graphic display module, wherein the user management module, the simulation module and the graphic display module are connected in sequence;

[0007] The user management module is used to store and verify the identity information of the operator;

[0008] The simulation module is used to simulate the distribution network and obtain simulation results;

[0009] The graphic display module is used to map and display the simulation results.

[0010] Wherein, the user management module includes a database unit, an input unit and a verification unit, and the input unit, the verification unit and the database unit are connected in sequence;

[0011] The database unit is used for the administrator to manage the identity information;

[0012] The input unit is used to input the identity information of the operator;

[0013] The verification unit verifies the identity information of the operator based on the data in the database unit.

[0014] Wherein, the simulation module includes a normal unit, a fault unit and a power flow calculation unit, and the normal unit and the fault unit are respectively connected to the power flow calculation unit;

[0015] The normal unit is used to output a topological structure diagram of a multi-source and multi-circuit complex distribution network;

[0016] The fault unit is used to perform fault simulation and output a topological structure diagram after the dispatching and reconstruction of the distribution network automation system;

[0017] The power flow calculation unit is used to perform numerical simulation on the normal mode distribution network and the fault mode self-healing distribution network.

[0018] Wherein, the fault unit includes a fault setting subunit, a parameter modification subunit and a fault self-healing subunit, and the fault setting subunit, the parameter modification subunit and the fault self-healing subunit are connected in sequence;

[0019] The fault setting subunit is used to set the fault area and fault type;

[0020] The parameter modification subunit is used to modify the parameters of the electrical equipment;

[0021] The fault self-healing subunit is used to output a topological structure diagram after the distribution network automation system is dispatched and reconstructed.

[0022] In a second aspect, a multi-source multi-circuit complex distribution network operation training simulation teaching method is used for the multi-source multi-circuit complex distribution network operation training simulation teaching platform described in the first aspect, comprising the following steps:

[0023] The operator uses the user management module to log in based on the identity information;

[0024] Select normal mode or fault mode in the simulation module and output simulation results;

[0025] The graphic display module maps and displays the simulation results.

[0026] The multi-source and multi-circuit complex distribution network operation training simulation teaching platform of the present invention comprises a user management module, a simulation module and a graphic display module, wherein the user management module, the simulation module and the graphic display module are connected in sequence; the user management module is used to store and verify the identity information of the operator; the simulation module is used to simulate the distribution network and obtain the simulation result; the graphic display module is used to map and display the simulation result; the present invention intuitively and vividly displays the network topology structure, network operation parameters, working principle of distribution network automation and fault self-healing workflow of the multi-source and multi-circuit complex distribution network, laying a foundation for newly employed system maintenance personnel to engage in operation and maintenance management, thereby solving the problem that the working principle of the multi-source and multi-circuit power supply and distribution network is relatively complicated and inconvenient for the training of distribution operation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0028] Figure 1 It is a topological diagram of a multi-source and multi-circuit distribution network.

[0029] Figure 2 It is a relationship diagram of the multi-source and multi-circuit complex distribution network operation training simulation teaching platform of the present invention.

[0030] Figure 3 It is a work flow chart of the multi-source and multi-circuit complex distribution network operation training simulation teaching platform of the present invention.

[0031] Figure 4 It is a structural schematic diagram of the multi-source and multi-circuit complex distribution network operation training simulation teaching platform of the present invention.

[0032] Figure 5 It is a structural diagram of the user management module.

[0033] Figure 6 It is a structural diagram of the simulation module.

[0034] Figure 7 It is a structural diagram of the faulty unit.

[0035] Figure 8 It is a flow chart of the multi-source and multi-circuit complex distribution network operation training simulation teaching method of the present invention.

[0036] In the figure: 1-user management module, 2-simulation module, 3-graphic display module, 11-database unit, 12-input unit, 13-verification unit, 21-normal unit, 22-fault unit, 23-flow calculation unit, 221-fault setting subunit, 222-parameter modification subunit, 223-fault self-healing subunit. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0038] See also Figures 1 to 7 In the first aspect, the present invention provides a multi-source multi-circuit complex distribution network operation training simulation teaching platform, comprising a user management module 1, a simulation module 2 and a graphic display module 3, wherein the user management module 1, the simulation module 2 and the graphic display module 3 are connected in sequence;

[0039] The user management module 1 is used to store and verify the identity information of the operator;

[0040] The simulation module 2 is used to simulate the distribution network and obtain simulation results;

[0041] The graphic display module 3 is used to map and display the simulation results.

[0042] In this embodiment, the user management module 1 is used to store and verify the identity information of the operator; the simulation module 2 is used to simulate the distribution network and obtain the simulation results; the graphic display module 3 is used to map and display the simulation results; the present invention intuitively and vividly displays the network topology structure, network operation parameters, working principle of distribution network automation and fault self-healing workflow of a multi-source and multi-circuit complex distribution network, laying a foundation for new system maintenance personnel to engage in operation and maintenance management, thereby solving the problem that the working principle of the multi-source and multi-circuit power supply and distribution network is relatively complicated and inconvenient for the training of distribution operation and maintenance personnel.

[0043] Further, the user management module 1 includes a database unit 11, an input unit 12 and a verification unit 13, and the input unit 12, the verification unit 13 and the database unit 11 are connected in sequence;

[0044] The database unit 11 is used for the administrator to manage the identity information;

[0045] The input unit 12 is used to input the identity information of the operator;

[0046] The verification unit 13 verifies the identity information of the operator based on the data in the database unit 11 .

[0047] In this embodiment, user login: the user logs in according to the corresponding authority and password; the database unit 11 is used for the administrator to manage the identity information; the input unit 12 is used to input the identity information of the operator; the verification unit 13 verifies the identity information of the operator based on the data in the database unit 11.

[0048] Further, the simulation module 2 includes a normal unit 21, a fault unit 22 and a power flow calculation unit 23, and the normal unit 21 and the fault unit 22 are respectively connected to the power flow calculation unit 23;

[0049] The normal unit 21 is used to output a topological structure diagram of a multi-source and multi-circuit complex distribution network;

[0050] The fault unit 22 is used to perform fault simulation and output a topological structure diagram after the dispatching and reconstruction of the distribution network automation system;

[0051] The power flow calculation unit 23 is used to perform numerical simulation on the normal mode distribution network and the fault mode self-healing distribution network.

[0052] In this embodiment, the normal unit 21 outputs a topological structure diagram of a multi-source multi-circuit complex distribution network; the fault unit 22 is used to perform fault simulation to output a topological structure diagram after the distribution network automation system is reconfigured; the power flow calculation unit 23 performs numerical simulation on the normal mode distribution network and the distribution network after the fault mode is self-healed. Normal mode: After the identity authentication is completed, click the "Normal Mode" button to enter the normal mode interface. The main interface displays the topological structure diagram of the multi-source multi-circuit complex distribution network, which is convenient for the trainees to be familiar with the network topology. Click the "Start Simulation" button, and after the simulation is completed, the system interface displays the waveform diagram of the main node electrical parameters in a graphic. Click the "Power Flow Calculation" button, and the system interface displays the steady-state values ​​of the main node electrical parameters in a table. Fault mode: Click the "Fault Mode" button to enter the fault mode interface. Click the "Fault Setting" button to enter the "Fault Setting" interface to set the fault area and fault type. Click the "Parameter Modification" button to enter the "Parameter Modification" interface, where the parameters of the electrical equipment can be modified and saved. Click the "Fault Self-Healing" button, and the main interface displays the topological structure diagram after the distribution network automation system is reconfigured, which is convenient for the trainees to be familiar with the working process of the distribution network automation system. Click the "Start Simulation" button, and when the simulation is finished, the system interface will display the waveform of the electrical parameters of the main nodes of the reconstructed system in a graphical manner. Click the "Power Flow Calculation" button, and the system interface will display the steady-state values ​​of the electrical parameters of the main nodes of the reconstructed system in a table.

[0053] Further, the fault unit 22 includes a fault setting subunit 221, a parameter modification subunit 222 and a fault self-healing subunit 223, and the fault setting subunit 221, the parameter modification subunit 222 and the fault self-healing subunit 223 are connected in sequence;

[0054] The fault setting subunit 221 is used to set the fault area and fault type;

[0055] The parameter modification subunit 222 is used to modify the parameters of the electrical equipment;

[0056] The fault self-healing subunit 223 is used to output a topological structure diagram after the distribution network automation system is dispatched and reconstructed.

[0057] In this embodiment, click the "Parameter Modification" button to enter the "Parameter Modification" interface, where the parameters of the electrical equipment can be modified and saved. Click the "Fault Self-Healing" button, and the main interface will display the topological structure diagram of the distribution network automation system after scheduling and reconstruction, which will help trainees become familiar with the working process of the distribution network automation system.

[0058] See also Figure 8 In the second aspect, a multi-source multi-circuit complex distribution network operation training simulation teaching method is used for the multi-source multi-circuit complex distribution network operation training simulation teaching platform described in the first aspect, comprising the following steps:

[0059] S1 The operator uses the user management module 1 to log in based on the identity information;

[0060] Specifically, the operator clicks the start button to compare the name and password information in the input dialog box with the identity information and password pre-stored in the database. Personnel who fail to pass the identification cannot proceed to the next step. The system's built-in database supports the addition, modification, and deletion of personnel identity information;

[0061] S2 selects a normal mode or a fault mode in simulation module 2 and outputs the simulation result;

[0062] Specifically, in normal mode, the simulation model of a multi-source and multi-circuit complex distribution network is built using the model resources such as power supply, conductor, generator, oscilloscope, etc. in the Matlab-Simulink model library. After the distribution network model is completed, the graphical interface of the model simulation output is designed; the distribution network simulation model parameters are called, and the Matlab flow calculation subroutine is written; in fault mode: according to the dispatching logic of distribution network automation, for faults occurring in different areas and different points, the opening and closing parameters of several switch stations and switch stations in the distribution network simulation model are set, which can realize fault self-healing and distribution network line reconstruction. The simulation parameters of any equipment, component and line in the distribution network simulation model can be called, opened and set by the Modify Model button, and the model parameters can be modified and saved after the Save Model button is used; for the distribution network simulation model after self-healing and reconstruction, the graphical interface of the model simulation output is also designed, and the Matlab subroutine of the flow calculation is called.

[0063] S3 graphic display module 3 maps and displays the simulation results.

[0064] Specifically, the graphic display module 3 maps the simulation results of the background MATLAB simulation model to the distribution network topology structure, making it convenient for users to view the electrical parameters of each node and device.

[0065] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A multi-source and multi-circuit complex distribution network operation training simulation teaching platform, characterized by: It includes a user management module, a simulation module and a graphic display module, wherein the user management module, the simulation module and the graphic display module are connected in sequence; The user management module is used to store and verify the identity information of the operator; The simulation module is used to simulate the distribution network and obtain simulation results; The graphic display module is used to map and display the simulation results.

2. The multi-source and multi-circuit complex distribution network operation training simulation teaching platform according to claim 1, characterized in that: The user management module includes a database unit, an input unit and a verification unit, and the input unit, the verification unit and the database unit are connected in sequence; The database unit is used for the administrator to manage the identity information; The input unit is used to input the identity information of the operator; The verification unit verifies the identity information of the operator based on the data in the database unit.

3. The multi-source and multi-circuit complex distribution network operation training simulation teaching platform as claimed in claim 2, characterized in that: The simulation module includes a normal unit, a fault unit and a power flow calculation unit, and the normal unit and the fault unit are respectively connected to the power flow calculation unit; The normal unit is used to output a topological structure diagram of a multi-source and multi-circuit complex distribution network; The fault unit is used to perform fault simulation and output a topological structure diagram after the dispatching and reconstruction of the distribution network automation system; The power flow calculation unit is used to perform numerical simulation on the normal mode distribution network and the fault mode self-healing distribution network.

4. The multi-source and multi-circuit complex distribution network operation training simulation teaching platform as claimed in claim 3, characterized in that: The fault unit comprises a fault setting subunit, a parameter modification subunit and a fault self-healing subunit, wherein the fault setting subunit, the parameter modification subunit and the fault self-healing subunit are connected in sequence; The fault setting subunit is used to set the fault area and fault type; The parameter modification subunit is used to modify the parameters of the electrical equipment; The fault self-healing subunit is used to output a topological structure diagram after the distribution network automation system is dispatched and reconstructed.

5. A multi-source multi-circuit complex distribution network operation training simulation teaching method, used for the multi-source multi-circuit complex distribution network operation training simulation teaching platform according to any one of claims 1 to 4, characterized in that: The following steps are involved: The operator uses the user management module to log in based on the identity information; Select normal mode or fault mode in the simulation module and output simulation results; The graphic display module maps and displays the simulation results.

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