CN110389535B - Configuration type dynamic simulation test system and test method thereof - Google Patents
Configuration type dynamic simulation test system and test method thereof Download PDFInfo
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- CN110389535B CN110389535B CN201910720461.9A CN201910720461A CN110389535B CN 110389535 B CN110389535 B CN 110389535B CN 201910720461 A CN201910720461 A CN 201910720461A CN 110389535 B CN110389535 B CN 110389535B
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Abstract
The invention discloses a configuration type dynamic simulation test system and a test method, which comprise a configuration type dynamic simulation primary system, a configuration type dynamic simulation secondary system, a dynamic simulation configuration monitoring management system, a distributed power supply system, a communication subsystem and a dynamic simulation configuration monitoring management system. The invention has the beneficial effects that: by establishing a set of power distribution network dynamic simulation system, theories, equipment and methods of a power distribution network technology can be verified, meanwhile, a platform type dynamic simulation environment for researching, designing and operating an actual power distribution system is integrally designed, primary equipment can be tested, secondary equipment can be tested, the network structure of the power distribution network is flexible and polygonal, and the operation mode is controllable.
Description
Technical Field
The invention relates to the technical field of model experiments of power systems, in particular to a configuration mode dynamic simulation test system and a test method thereof.
Background
The dynamic simulation of electric power system belongs to the physical simulation of electric power system, and it adopts the simulation elements with identical physical properties and identical per unit values of parameters with the prototype system, and establishes the electric power system physical model according to the similarity principle. The model is a replica of the power system which reduces the actual power system according to a certain simulation proportion relation and retains the physical characteristics thereof based on the similar principle, and is called as the physical simulation of the power system. In popular terms, the real power system is reduced to a laboratory, and is the miniature of the real power system.
At present, the number of the movable die laboratories constructed in the power transmission network is large, and in recent years, with the continuous promotion of the construction of the power distribution network, the construction of the movable die laboratories for the power distribution network is also applied to many colleges and universities and electric academys. However, the practicability of the power distribution network moving die laboratory constructed at present is poor, and the power distribution network moving die laboratory is mainly embodied in the following points: the modification of the power distribution grid structure completely depends on manual wiring and manual operation of a network switch, so that the error rate is high; the management and the monitoring of an experimental scene are lacked, and the load size, the load wiring mode, the fault type, the size of a fault transition resistor, the setting of a grounding type and the like are adjusted only by manpower; the data inversion function of the traditional moving die laboratory is lacked, the experimental data, the waveform and the network can not be well corresponded after the experiment is finished, and some repeated experiments are often carried out.
Micro-grids, virtual power plants, active power distribution networks and the like are all solutions for solving DG high-permeability distribution networks; in practical application, the control theory of the control methods of the schemes is not mature, and the control methods need to be tested and verified; testing in an actual power distribution system is often subject to many limitations, making it impossible to perform sufficiently extensive testing, and some tests may not even be possible to run in an actual system. A set of dynamic simulation system of the power distribution network is established, theories, equipment and methods of the power distribution network technology are verified, the dynamic simulation system is an important method for solving the problem, and is also an important experimental tool for researching, designing and operating the actual power distribution system.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned conventional problems.
Therefore, one of the purposes of the present invention is to provide a configuration mode dynamic testing system, which mainly completes distribution network primary and secondary networking and distribution network protection and control tests on an active distribution network configuration mode dynamic testing area.
In order to solve the technical problems, the invention provides the following technical scheme: a configuration type movable mould test system comprises a configuration type movable mould primary system, wherein the movable mould primary system comprises a primary simulation subsystem, the primary simulation subsystem comprises a simulation switch assembly, a simulation circuit assembly, a simulation bus assembly, a simulation fault assembly, a simulation grounding assembly, a simulation load assembly and a simulation grounding capacitor, and each assembly forms different application screen cabinets by a standard cabinet group screen; the configuration type movable mold secondary system comprises a secondary measurement and control subsystem, the secondary measurement and control subsystem is responsible for simulating measurement and control of the group platform type movable mold primary system through measurement and control equipment, and the measurement and control equipment comprises fault wave recording equipment and a multi-mode terminal; the dynamic model configuration monitoring and management system is used for managing the process of the dynamic model test; a distributed power system comprising a distributed power simulator; and the communication subsystem is formed by an experimental Ethernet switch and a communication cable thereof and is used for networking communication between the configuration type movable mould primary system, the configuration type movable mould secondary system and the movable mould configuration monitoring management system.
As a preferable aspect of the configuration-based dynamic simulation test system of the present invention, wherein: the configuration type movable mold primary system further comprises a primary access subsystem, wherein the primary access subsystem is composed of a plurality of primary access modules, and each primary access module is composed of an access bus and a switch assembly.
As a preferable aspect of the configuration-based dynamic simulation test system of the present invention, wherein: the secondary measurement and control subsystem is responsible for monitoring, controlling and recording waveforms of all switches in the primary simulation subsystem and the primary access subsystem through the fault recording equipment and the multimode terminal.
As a preferable aspect of the configuration-based dynamic simulation test system of the present invention, wherein: the fault recording equipment is responsible for dynamic analysis and fault playback under various tests; the multimode terminal can bear different automatic functions according to different switch positions and configuration roles, and the automatic functions comprise a three-remote terminal, overcurrent protection, a current counting type terminal, a voltage time type terminal, a demarcation switch controller and an intelligent distributed terminal.
As a preferable embodiment of the configuration-based dynamic testing system of the present invention, wherein: the configuration type dynamic secondary system also comprises a secondary access subsystem, wherein an access point is reserved for the secondary system to be tested at each switch of the secondary access subsystem, and the access points can be used for acquiring three-phase alternating voltage, three-phase alternating current and zero-sequence current.
As a preferable embodiment of the configuration-based dynamic testing system of the present invention, wherein: the multimode terminal can work in various configuration modes according to instructions of the dynamic configuration monitoring management system, and a user can verify different grid structures through selection of the various configuration modes and select a suitable distribution network feeder automation mode.
As a preferable aspect of the configuration-based dynamic simulation test system of the present invention, wherein: the configuration type dynamic mold secondary system reserves a quick access interface of secondary equipment, can access various intelligent secondary intelligent equipment, and can test and verify the externally accessed intelligent measurement and control equipment and evaluate the control strategy and control logic of the intelligent measurement and control equipment after exiting the multimode terminal configured by the system.
The invention further aims to provide a testing method of the configuration dynamic model testing system, which can be applied to the configuration dynamic model testing system so as to test the dynamic model configuration system.
In order to solve the technical problems, the invention provides the following technical scheme: a test method of a configuration mode dynamic simulation test system is characterized in that subsystems in the configuration mode dynamic simulation test system are matched with one another to complete related tests of an active power distribution network, and test steps are further included for preparing a test environment and compiling and executing a test scheme.
As a preferable embodiment of the testing method of the configuration-mode dynamic testing system of the present invention, wherein: the test environment preparation comprises the following steps of modeling a primary system of the active power distribution network, creating a power distribution network model in the dynamic configuration monitoring management system and executing the model, wherein the system completes corresponding operations according to a topological structure generated by the power distribution network model, and the operations comprise automatically completing the adjustment of a grounding mode, the adjustment of a transformer tap and the switching of a tap switch; the system can provide the simplest wiring mode according to the optimal algorithm, and testers can quickly complete the wiring work of corresponding equipment according to the wiring list; adjusting parameters of the configuration mode dynamic primary system equipment according to the experiment to be tested, wherein the parameters comprise the operation mode of a distributed power supply and the parameter setting of variable load; according to the experiment requirement to be tested, accessing secondary control equipment and protection equipment of the configuration mode dynamic secondary system and setting corresponding equipment parameters; and adjusting the communication parameters of the communication subsystem to complete the connection of the communication link.
As a preferable embodiment of the testing method of the configuration-based dynamic testing system of the present invention, wherein: the test scheme compiling and executing further comprises the following steps of establishing a test case in the dynamic configuration monitoring management system, wherein the steps comprise establishing test contents, steps and judgment standards; starting an experiment of a target test on the dynamic configuration monitoring management system; monitoring and managing the running state of the primary and secondary equipment to be tested by the dynamic configuration monitoring and managing system; and collecting test data, analyzing test results, and automatically generating a test report according to the template provided by the dynamic configuration monitoring and management system.
The invention has the beneficial effects that: by establishing a set of power distribution network dynamic simulation system, theories, equipment and methods of a power distribution network technology can be verified, and meanwhile, a platform type dynamic model environment which is designed by integrally researching, designing and operating an actual power distribution system can be used for testing primary equipment and secondary equipment, and the power distribution network is flexible and multilateral in network structure and controllable in operation mode.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a block diagram of a dynamic simulation system of a configurable dynamic simulation test system according to a first embodiment of the present invention;
FIG. 2 is a schematic view of an interface of the simulated bus assembly according to the first embodiment of the present invention;
fig. 3 is a schematic diagram of an interface of a line switch module according to a first embodiment of the present invention;
fig. 4 is a schematic diagram of a grounding unit according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of a grounding unit interface according to a first embodiment of the present invention;
FIG. 6 is a schematic diagram of a capacitance compensation interface according to a first embodiment of the present invention;
FIG. 7 is a diagram illustrating a secondary configuration flow according to a first embodiment of the present invention;
fig. 8 is a schematic overall flowchart of a dynamic configuration monitoring and managing method according to a third embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a dynamic configuration monitoring and management system according to a fourth embodiment of the present invention;
FIG. 10 is a schematic view of the overall flow structure of the library conversion method according to the fifth embodiment of the present invention;
fig. 11 is a schematic view of a typical rack structure of single-ring and radial type according to a fifth embodiment of the present invention;
fig. 12 is a schematic view of a dual-ring type typical grid structure according to a fifth embodiment of the present invention;
fig. 13 is a schematic diagram of a multi-segment, single-linkage, representative frame structure according to a fifth embodiment of the present invention;
fig. 14 is a schematic structural diagram of a blank grid template drawn according to a fifth embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific embodiments disclosed below.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not necessarily enlarged to scale, and are merely exemplary, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment provides a configuration-mode dynamic simulation test system, which can verify theories, equipment and methods of a power distribution network technology and research, design and operate an actual power distribution system. More specifically, the test object in this embodiment is an overall structure of the dynamic simulation system, the dynamic simulation system is powered by a separately arranged 10kV distribution transformer, a power supply of the dynamic simulation system is led out from a 10kV power cabinet, and the active power distribution network configuration type dynamic simulation test area mainly completes a distribution network primary and secondary networking and a distribution network protection and control test. Referring to the illustration of fig. 1, a flexible configuration system may form various power distribution racks according to a management system; optionally connecting with a main system through isolation; the direct current power distribution network can be connected with the direct current power distribution network at will through A, B and C; the expansion interface screen can be connected with loads, new energy and the microgrid at will, and is an interface device for realizing device connection. The moving die system is mainly divided into two parts, namely a medium-voltage distribution network simulation part and a low-voltage distribution network simulation part, and the corresponding simulation voltages are 690V and 380V respectively. The analog part of the low-voltage system only considers that part of the analog part has configuration functions and mainly comprises a voltage reduction isolation change and an expansion interface screen. Through the expansion interface screen, each distributed power supply and load can be flexibly connected to the alternating-current low-voltage bus. And the expansion of a low-voltage system at the later stage can increase the corresponding network topology configuration function. The medium-voltage moving die primary system mainly simulates a 10kV distribution network, can simulate a typical distribution network architecture, and can complete different test contents such as a ground fault test and a ground short circuit test in different grounding modes based on the typical network architecture.
Furthermore, the configuration mode movable mould primary system in the configuration mode movable mould test system comprises a primary simulation subsystem, the primary simulation subsystem comprises a simulation switch assembly, a simulation circuit assembly, a simulation bus assembly, a simulation fault assembly, a simulation grounding assembly, a simulation load assembly and a simulation grounding capacitor, and each assembly forms different application screen cabinets by a standard cabinet group screen; and the screen cabinet mainly comprises a comprehensive configuration screen, a fault simulation screen, a grounding simulation screen, a line impedance screen and a load screen. The configuration mode dynamic model primary system also comprises a primary access subsystem, wherein the primary access subsystem is formed by a plurality of primary access modules, and the primary access module is formed by an access bus and a switch component.
Referring to the illustration of fig. 2, the simulated bus bar assembly considers that the framework of the power distribution network has a plurality of branches, three ABC terminals in the power access area can only be connected with three branches, the bus bar assembly is added during design, and one bus bar assembly is composed of six ABC terminals.
Each line access assembly of the simulation line assembly is used for simulating the impedance of a feeder line section, the length of a cable simulated by each line access assembly is marked by the length of the line when the cable is assembled, the inside of an access area is connected with a corresponding line simulation impedance cabinet, and a laboratory can connect corresponding ABC wiring terminals with quick connectors according to system requirements.
The system network frame which can be simulated by the moving die system is mainly determined by the number of switches and line sections configured by the system, and the moving die system can form a typical network frame structure.
Referring to the illustration of fig. 3, the analog switch component is a power switch, a line switch and a primary system expansion access switch which are all simulated by using circuit breakers, and the power switch, the primary system expansion access switch and the line switch all adopt 225A alternating current contactor; a local button is arranged, so that local control and remote control can be realized; the contacts of the relay expansion contactor adopting 4 normally open contacts are respectively used for monitoring a state indicator lamp, monitoring the state of a measurement and control terminal, monitoring the state of a wave recording device and monitoring the state of a secondary system to be tested. The switching assembly is configured with 200:5 precision 0.2s-ct and 100:5 precision 0.2s-ct for measuring the three-phase current and the zero-sequence current, respectively. Each switch is provided with two groups of CTs, one group of CTs is used by the measurement and control terminal and the wave recording device, and the other group of CTs is used by the secondary system to be measured. Each switch is simultaneously provided with a group of voltage transformers with transformation ratio of 690/100 and precision of 0.5%, and the measurement and control system and the access system share the same.
The fault simulation component mainly uses a fault simulation cabinet to simulate the faults of the power distribution network. The fault can simulate single-phase earth fault, two-phase short-circuit earth fault, three-phase short-circuit earth fault and the like, fault phases and fault transition resistances can be set, and the occurrence time of the fault can be accurately controlled.
Referring to the schematic of fig. 4-5, the schematic is an analog ground assembly: the 690V dynamic simulation platform needs to realize fault simulation of a low-current grounding system, for example, a neutral point ungrounded system, a neutral point arc suppression coil grounding system, a neutral point small-resistance grounding system and the like, the 10/0.4kV distribution main transformer is connected in a delta/YN mode, during experiments, power supplies are connected into a movable mould system through an isolation transformer in view of safety, the neutral point cannot be naturally formed in the movable mould system in the YN/delta connection mode, and therefore the neutral point needs to be formed through a Z-type grounding transformer. Meanwhile, the system also needs to realize the influence of the compensation degree of the arc suppression coil on the fault characteristics of a system with a neutral point grounded through the arc suppression coil and the influence of the ground resistance on the fault characteristics of the system with the neutral point grounded through a small resistor. Therefore, the system is provided with a grounding unit which can simulate faults of a low-current grounding system such as a neutral point ungrounded system, a neutral point grounded through a small resistor, a neutral point grounded through an arc suppression coil and the like, and can set the compensation degree of the ground resistor and the arc suppression coil of the low-resistance grounding system.
Referring to the schematic of FIG. 6, there is illustrated an analog capacitance compensation assembly: the length of the cable selected by the system is limited, the ground capacitance is small, so that the fault characteristics are not obvious when a single-phase grounding experiment is carried out.
Furthermore, the configuration-type moving mold secondary system in this embodiment includes a secondary measurement and control subsystem, the secondary measurement and control subsystem is responsible for measurement and control of the simulation group desktop-type moving mold primary system through measurement and control equipment, and the measurement and control equipment includes fault recording equipment and a multi-mode terminal; the secondary measurement and control subsystem is responsible for monitoring, controlling and recording waveforms of all switches in the primary simulation subsystem and the primary access subsystem through fault recording equipment and a multi-mode terminal. The wave recording equipment is responsible for dynamic analysis and fault playback under various tests; the multimode terminal can bear different automatic functions according to different switch positions and configuration roles, and the automatic functions comprise a three-remote terminal, an overcurrent protection terminal, a current counting terminal, a voltage time terminal, a demarcation switch controller and an intelligent distributed terminal.
The configuration type dynamic die secondary system also comprises a secondary access subsystem, wherein an access point is reserved for the secondary system to be tested at each switch of the secondary access subsystem, and the access points can be used for acquiring three-phase alternating voltage, three-phase alternating current and zero-sequence current in the measuring range. The multimode terminal can work in various configuration modes according to instructions of the dynamic configuration monitoring management system, a user can verify different grid structures through selection of the various configuration modes, and a suitable distribution network feeder automation mode is selected, namely the multimode terminal can generate different secondary configuration modes under the control of the monitoring management system except for achieving basic three-remote functions, and the secondary system configuration principle refers to the schematic diagram of fig. 7.
The configuration type dynamic mold secondary system reserves a quick access interface of secondary equipment, can access various intelligent secondary intelligent equipment, and can test and verify the externally accessed intelligent measurement and control equipment and evaluate the control strategy and control logic of the intelligent measurement and control equipment after exiting from a multimode terminal configured by the system. The distributed power supply system comprises a distributed power supply simulator; the communication subsystem is composed of an experimental Ethernet switch and a communication cable thereof and is used for networking communication of the configuration type movable mould primary system, the configuration type movable mould secondary system and the movable mould configuration monitoring management system.
It should be further noted that the multimode power distribution terminal in the secondary measurement and control subsystem may assume different automation functions according to different switch positions and configuration roles, and typically includes a three-remote terminal, an overcurrent protection, an ammeter type FA terminal, a voltage time type FA terminal, a demarcation switch controller, an intelligent distributed FA terminal, and the like. The fault recording device realizes the recording of analog quantities such as voltage, current and the like and switching values, and a tester can analyze the waveform of fault simulation, the action behavior and the time sequence of FA in the fault process, the output of the distributed power supply and the like through recording data. Meanwhile, fault recording data is also an important component of a test report. In this embodiment, each device is configured with a distributed high-frequency wave recorder, each wave recorder collects 4 paths of voltage, 4 paths of current and 8 paths of remote signaling, and each of 45 switches in the network corresponds to one wave recorder.
1) The sampling rate of the distributed high-frequency wave recording device can reach 100ksps at most;
2) The distributed high-frequency wave recording device generates a corresponding comtrade file according to the network switch, so that the experimental data can be analyzed and displayed more conveniently;
3) The waveform files recorded by the distributed wave recording device can be conveniently used for data reproduction, the reproduction of an experimental scene can be completed by outputting the waveform files of corresponding switches by virtue of a tester and the like, and controlling the testers to start at the same time through software, so that the FA function of a power distribution terminal can be tested.
Example 2
In this embodiment, a configuration dynamic model testing system based on the above embodiment provides a testing method for the configuration dynamic model testing system, each subsystem in the configuration dynamic model testing system cooperates with each other to complete a related test of an active power distribution network, and the testing method further includes testing steps for preparing a testing environment and compiling and executing a testing scheme.
Wherein the test environment preparation comprises the following steps,
the method comprises the steps that a primary system of the active power distribution network is modeled, a power distribution network model is established in a dynamic configuration monitoring management system and executed, and the system completes corresponding operations according to a topological structure generated by the power distribution network model, wherein the operations comprise automatically completing adjustment of a grounding mode, adjustment of a transformer tap and switching of a tap switch; the system can give the simplest wiring mode according to the optimal algorithm, and testers can quickly complete the wiring work of corresponding equipment according to the wiring list;
adjusting configuration mode movable mould primary system equipment parameters according to an experiment to be tested, wherein the configuration mode movable mould primary system equipment parameters comprise a distributed power supply operation mode and variable load parameter setting;
according to the experimental requirement to be tested, accessing secondary control equipment and protection equipment of the configuration mode dynamic secondary system and setting corresponding equipment parameters;
and adjusting the communication parameters of the communication subsystem to complete the connection of the communication link.
Wherein the test protocol compilation and execution further comprises the steps of,
creating a test case in the dynamic model configuration monitoring and management system, wherein the test case comprises test content creation, test steps and judgment standards;
starting an experiment of a target test on a dynamic model configuration monitoring management system;
monitoring and managing the running state of the primary and secondary equipment to be tested by a dynamic configuration monitoring and managing system;
and collecting test data, analyzing test results, and automatically generating a test report according to the template provided by the dynamic configuration monitoring management system.
Example 3
Referring to the schematic diagram of fig. 8, the dynamic model configuration monitoring and managing system of the above embodiment is used for flow management of the dynamic model test; in this embodiment, the configuration dynamic model system platform is referred to as a dynamic model system, and the process management of the dynamic model test is performed through the dynamic model monitoring and management method. The method comprises the steps of dynamic model equipment library building, power distribution network modeling, dynamic model test scheme editing, dynamic model test scheme execution and monitoring and test result analysis. More specifically, wherein,
the method comprises the steps that a movable mould equipment library updates equipment elements contained in a movable mould primary system into a database, wherein the equipment elements comprise primary simulation elements of switches, lines, power supplies, loads, fault module equipment and grounding module equipment; if the number of the elements of the primary system of the moving mold is adjusted, the database is updated correspondingly, and the user can directly use the updated database, it is understood that only part of the equipment elements are output in the embodiment, and the part of the equipment elements necessarily includes different target equipment elements related to different tests, and the parts can be selected and stored according to the self-requirements of the user.
And the power distribution network modeling is used for selecting corresponding equipment elements to construct a required network according to the updated equipment elements in the moving equipment library, and creating and executing a power distribution network model. The idea of configuration mode dynamic modeling is mainly embodied by the function of distribution network modeling, network architectures in actual distribution networks are various, if a user directly constructs a distribution network to be simulated by using a configuration connecting cable on a dynamic configuration screen, time and labor are wasted, and much time is spent in matching with a measuring point in a monitoring system. Therefore, the configuration management system software provides a computer aided modeling technology, and it should be noted that, the configuration management system software is implemented by using a computer application software platform, and a user can quickly construct a target network structure model in a platform environment. The user can select corresponding elements to construct a required network, wherein the network primitives are in one-to-one correspondence with the elements contained in the database, the measurement and control equipment corresponding to each switch is bound, and after the user modeling is completed, corresponding measurement and control information is automatically mapped to the monitoring main page.
Furthermore, in the power distribution network modeling step, the dynamic simulation system completes corresponding operations according to a topological structure generated by the created power distribution network model, and the operations comprise automatic completion of adjustment of a grounding mode, adjustment of a transformer tap and switching of a tap switch. And when the switching operation of the tap switch cannot be completed through automatic switching operation, the movable die system provides the simplest wiring mode according to the set optimal path algorithm, and a tester can quickly complete the wiring work of corresponding test equipment according to the wiring list. In order to facilitate quick setting and operation, different test case libraries are preset in the dynamic model system, the test case libraries comprise preset network structures corresponding to different power distribution network models, guide tables corresponding to the preset network structures and corresponding test parameters, and a user directly and quickly completes construction of a typical test scene and corresponding test by using the preset network structures. Namely, a special test case library is built in platform software of the dynamic simulation system, a guide table corresponding to a preset network structure, test parameters and the like are preset, and a user can quickly complete construction of a typical test scene and complete corresponding tests by utilizing a preset network model.
Editing a moving mold test scheme, wherein the moving mold test scheme is edited to define the steps of a moving mold test and corresponding test contents for a user, and different test schemes are constructed; the definition content edited by the moving die test scheme comprises fault parameters of the position and the fault type of a fault point, a system grounding mode and corresponding parameters, numerical values of all loads, fault parameters of a communication system, output of all distributed power supplies, a working mode, action parameters and a protection set value of a multi-mode terminal.
In this embodiment, after the dynamic model test scheme is edited, a configuration cable connection guide table needs to be generated, and a user can quickly complete connection of each simulation device of the dynamic model primary system according to the guide table. And after the system is connected once, the whole dynamic simulation test environment is established. The modeling tool applies an optimal path algorithm to generate a configuration cable connection guide table, so that the workload of manually connecting the configuration cables by a user is reduced to the minimum. And the guide table can be given by an Excel table, referring to the configuration screen cabinet shown in table 1 below as an example, which is a configuration cable connection guide table.
And executing and monitoring the moving die test scheme, and displaying the real-time state of the moving die system according to the selected test scheme, wherein the real-time state comprises the on-off state and the current and voltage of the moving die system, and the state of the whole moving die system is monitored in real time. After the execution of the test scheme is selected, the conditions of the whole dynamic die system, such as the switch state, the current and the voltage, can be monitored on the main page in real time.
And analyzing the test result, and automatically generating a test report after the execution of the dynamic simulation test scheme is finished, wherein the test report comprises test contents, steps, various parameters and network states in the test process. The method also comprises the steps of establishing a historical database in the dynamic simulation system, and storing the previous test data in the historical database; calling a wave recording history file of the wave recording equipment from a history database by a user, and analyzing and playing back the history data in the test process; and the user can access the historical database by using the wireless network equipment to check and analyze the test data at each time.
Further, after the dynamic model test scheme is executed, the monitoring management platform automatically generates a test report, the report includes test contents and steps, various parameters and network states in the test process, and the like, and the report can be stored in various file formats and printed, for example, the file formats include Excel, PDF, and word. Meanwhile, the user can call the recorded recording history file of the recording equipment, and analysis data analysis and playback are carried out on the test process, which is the schematic of the recording analysis chart. A monitoring management software platform of the dynamic simulation system is provided with a special historical database which is used for storing the test data of the past times, and a user can check and analyze the test data of each time by using a platform tool.
Example 4
Referring to the schematic diagram of fig. 9, in order to provide a dynamic configuration monitoring and managing system in this embodiment, the dynamic configuration monitoring and managing method in the foregoing embodiment can be applied to the dynamic configuration monitoring and managing system, where the dynamic configuration monitoring and managing system is a core component of a configuration dynamic system platform, and the process management of the dynamic test is performed through the system, and the system mainly includes two parts, namely hardware and software. The hardware part mainly includes the system server 100, the workstation 200, and other devices, and it should be noted and understood that, for example, in the present embodiment, the hardware part also includes a power supply device, a communication device, an electrical connection device, and the like for system configuration, and is not limited to the above devices. The software part of the dynamic model configuration monitoring and management system comprises application modules such as dynamic model equipment library building, power distribution network modeling, dynamic model test scheme editing, real-time monitoring, report generation, test result analysis and the like, namely a computer application software platform in the embodiment. The system comprises a system server 100 and a workstation 200 connected with the system server 100, wherein the workstation is accessed into a dynamic configuration system for testing and monitoring. Specifically, a history database server; the system server 100 comprises an element database server composed of equipment elements related to a dynamic model system, and a workstation 200 composed of test data, wherein the workstation comprises a computer 201, a display 202 and a printer 203, the computer 201 comprises an application module, and the application module is used for dynamic model equipment library building, power distribution network modeling, dynamic model test scheme editing, dynamic model test scheme execution and monitoring and test result analysis; the display 202 is used for displaying the system real-time status data and the analysis result data and generating a report, and the printer 203 is used for printing the generated report. It should be noted that, in short, the database can be regarded as a place where the electronic file is stored in the electronic file cabinet, and a user can add, intercept, update, delete, and the like, to the data in the file. A "database" is a collection of data stored together in a manner that can be shared with multiple users, has as little redundancy as possible, and is independent of applications. The display 202 may be a display of the computer 201 or an independent display screen connected to the computer 201, and an application module set in the computer 201 is application software, and a user directly uses the application software to implement dynamic simulation equipment library building, power distribution network modeling, dynamic simulation test scheme editing, dynamic simulation test scheme execution and monitoring, and test result analysis in the steps of the dynamic simulation configuration monitoring and management method through operation.
Example 5
In the existing power distribution network model building process, firstly, a corresponding power distribution network model is generally called from a power distribution network model base to be applied, but for the built power distribution network model, under the characteristics of uncertainty and changeability of an active power distribution network, when a simulation scheme needs to replace equipment elements (increase or decrease equipment elements), the power distribution network model of a fixed template is obviously not applicable, at the moment, a user needs to manually change and update the template of the power distribution network model, and the change process needs to find and return to the source operation of the power distribution network model template, so that the method is troublesome, obviously insufficient in adaptability, incapable of quickly meeting the calling of a changeful simulation scheme, and has limitation. And secondly, the power distribution network model template is separated, and a user selects corresponding equipment elements from the movable mould equipment library to build a power distribution network model by self, so that the process can meet the application of a changeable simulation scheme, but the process is obviously very complicated and low-efficiency.
Therefore, based on the above-mentioned shortcomings, in order to improve the efficiency and applicability of the simulation of the dynamic simulation system, and to implement a faster modeling and execution of the simulation scheme, the implementation method for a faster conversion from the dynamic simulation equipment library to the power distribution network model is provided in the process of modeling the power distribution network for a single feeder power distribution network model structure based on the dynamic configuration monitoring management method, a power distribution network model library does not need to be established, and a user does not need to manually select and invoke a construction network for a different scheme, and the required power distribution network model can be quickly generated under a database to reflect network primitives in combination with computer-aided modeling, so that the simulation of the dynamic simulation system is faster and more efficient in a variable environment, and the applicability is obviously enhanced.
Referring to the schematic of fig. 10, there is illustrated the overall flow of the library conversion method of the present embodiment, more specifically, the method comprises the following steps,
the method comprises the steps that all kinds of equipment elements are collected, a total database of the movable mould equipment elements is established, data classification is carried out on all kinds of equipment elements, and classified data are updated to the total database to be stored and called;
defining unique labels of various types of equipment elements and constraint conditions of topological relations of the elements;
modeling with a graph: inputting model data, editing and inputting unique labels of component types and quantity of each type of the dynamic model test scheme to be performed, and enabling each component to correspond to an access interface, namely the quantity of nodes;
reference association, namely associating the closest network primitive reference topological graph stored in the dynamic model test scheme database according to the number and the variety of the input nodes;
coordinate capture, namely extracting and analyzing the tree-shaped characteristics of nodes and elements related to the reference topological graph by using a tree layout algorithm after the obtained reference topological graph is obtained, customizing a reference point as an initial node, setting (x, y) coordinates for the nodes and equipment elements, and matching a unique label according to the types of the equipment elements;
drawing a blank template of the power distribution network model, wherein the blank template is a grid graph with point coordinates;
and calling equipment elements of a total database according to the unique labels, the number and the corresponding coordinate data and by referring to constraint conditions among the elements to generate a power distribution network model.
It should be further noted that the system network frame that the dynamic model system can simulate is mainly determined by the number of switches and line segments configured by the system, so the dynamic model system can generate system network frames with different requirements according to the formed typical network frame structure, and for the system network frame proposed in this embodiment, the reference topological graph can be completely copied, or when there is a difference in number and type between the target network to be constructed and the reference topological graph, this embodiment can completely perform automatic generation according to the defined constraint condition and the rule of the tree model.
After a new power distribution network model is generated, network primitives correspond to equipment elements contained in a database one by one, a new primitive topological graph is generated, each switch or the corresponding measurement and control equipment of the equipment is bound, corresponding measurement and control information is automatically mapped to a monitoring main page to be displayed, a simplest wiring mode is provided by a subsequent optimal path algorithm, and testers can quickly finish the wiring work of corresponding test equipment according to a wiring list to finish the test of a simulation experiment. Multiple comparisons show that, by using image similarity measurement,
in this embodiment, based on the image test of OpenCV, through performing a comparison test on different typical models, as the similarity data in table 1 below, in the case of complete replication, the similarity between the generated new primitive topological graph and the reference topological graph is all as high as more than 90%.
Further, the total database classification content of the moving die equipment elements comprises: the screen body position of the element refers to the screen number of the element corresponding to the configuration interface, wherein each element provides an access interface which is called the configuration interface, and the configuration interface is connected with the corresponding element through a fixed cable. The element unique label indicates the element, that is, the element to which the element belongs can be identified through the element number, and the mode of the label in the embodiment can adopt numbers or letters as the category of the element. The types of the components of the moving die system include, for example, an impedance component (ZK), a switching component (KG), a bus component (MX), and a load component (FH), specifically, the impedance component is used for simulating a cable and a line, the switching component is used for simulating a breaker and a disconnecting link, the bus group component is used for simulating a bus, and the load component is used for simulating a load. The classification of the device elements in this embodiment includes the steps of collecting data and assigning labels, training a classifier, and outputting a classification result. And (3) by utilizing a K nearest neighbor classification algorithm, when most of K most similar samples of an element sample in the feature space belong to a certain class, the element sample also belongs to the class, weighting is carried out on the classified sample data, and classification prediction is carried out by utilizing a trained classifier.
Further, the purpose of defining the constraint condition of the topological relation of each element in this embodiment is to enable the element to generate a new distribution network model based on the constraint condition when the device element changes from the reference topological graph, so as to avoid a cumbersome process of generating the distribution network model by manually invoking the element in the conventional process.
Referring to the illustrations of fig. 11 to 13, the reference topological diagram includes a typical system grid structure of a single feeder to be associated, such as a single-ring type, a radiating type, a double-ring type, a multi-segment single-link type, and the like, and all the device connections of the single feeder line diagram are formed by connecting horizontal line segments or vertical line segments. Referring to the schematic diagram of fig. 13, the above-mentioned radiation type grid structure is placed in a grid for analysis, and it is found that the system grid that the movable model system can simulate is mainly determined by the number of switches and line segments of the system configuration, and the number of line segments can directly reflect the number of nodes, so that a typical system grid closest to the simulation scheme can be associated by capturing nodes and elements, and finally a new scheme is expanded in combination with a constraint relationship, so that the movable model system can generate different system grids according to the existing typical grid structure.
And traversing to obtain a required equipment set by taking the boundary node of the power distribution network model as a root node according to a physical connection relation model of each electrical element such as a circuit breaker, a switch, a disconnecting link and the like in the power system network. The physical connection relation model of each electrical element is an element constraint condition to be defined in this embodiment, including defining constraints based on the extension direction, coordinate length, hierarchical relationship, and the like of the element, and constraint rules such as node, bus segment, line-line repulsion, and the like may also be added. More specifically, the physical connection relationship between elements, in the present embodiment, in a single feeder network structure, it is assumed that each node in the topology has dual physical characteristics: the attractive force borne by one node is from a point in the topology, which is in a connection relation with the node, the size of the attractive force is increased along with the increase of the distance between the two points, the repulsive force is from all other points in the topology, after the calculation is started, each node moves to a new position according to the stress condition of the node to be expanded, and after the nodes are iterated for multiple times until each point in the topology is balanced in stress, the position of the node is finally determined.
Referring to the illustration of FIG. 14, a point p is defined in the rendered mesh i Resultant force f i ：
When the node repulsion of a certain branch of a certain bus section, different weights are set for the repulsion source node generated by the node repulsion, namely, the source node belongs to different bus sections and is a weighted value, and another weighted value is set when the source node belongs to the previous branch of the same bus section and is the other branch, thereby ensuring the reasonable distance between different bus sections and between adjacent branches.
After different weights are set, the repulsive force of the grid nodes is defined:
in the formula m 1 Number of nodes, n, of non-bus-section 1 And q is the number of nodes on the branch of the previous level of the current node of the bus section, the number of the residual nodes and r 1 For node-to-node p on other bus-sections i Weight of repulsive force, r 2 Is the weight of the repulsive force of the node on the one level branch above the point pi, in general r 1 <r 2 。
Because the single feeder network structure only needs to be extended in the longitudinal direction and the transverse direction, after the element connection relation and the node weight branch are restrained, the node coordinates are obtained by combining a tree-type layout algorithm, and a new power grid model based on a reference template can be generated. It should be noted that the tree layout algorithm has high efficiency by traversing the nodes of the template grid, can quickly determine the coordinates of each node, and can perform lateral and longitudinal expansion on the original reference template according to the constraint relationship, including the weight to judge the hierarchical relationship of the elements, whether the branches are located, and the attraction and repulsion constraints of the nodes at the two ends of the bus section.
Referring to the schematic diagram of fig. 14 again, which is a radiation type grid structure in a classical model, it is understood that each different reference topological graph can correspond to one or more power distribution network models, a position schematic diagram of an equipment element is added to the radiation type grid structure in the diagram, after the radiation type grid structure is constructed, the edge extension includes four positions a, b, c, and d, by traversing all nodes, judging the weight and repulsion analysis of the nodes between the equipment element to be added and the adjacent element e position, the final position of the equipment element to be added can be determined to complete the extension of the model, and so on, and the power distribution network model can be regenerated. It should be noted that, for the single feeder network structure, only the correct connection of the elements at the two ends needs to be determined, and the specific selection of the four positions a, b, c, and d and the length of the middle bus section do not affect the simulation scheme.
The tree layout algorithm has high efficiency, and can quickly determine the coordinates of each point, so that the whole model construction process is very quick, the user does not need to change the operation, the construction of the model can be completed only by inputting the element data corresponding to the changed simulation scheme into the system, and compared with the existing construction through a template, the tree layout algorithm has the advantages of rapidness and high efficiency.
Further, the tree layout algorithm in this embodiment is specifically as follows:
the tree-type layout is adapted to a "tree" -like hierarchical structure diagram having one root node. The power distribution network is a radial grid structure and meets the tree-shaped layering characteristic. Setting (x, y) coordinates for the whole model node;
after defining a root node as an initial node, sequentially accessing each node, and setting a y coordinate of each node in a traversing manner, and then setting an x coordinate in a traversing manner through a recursion middle sequence;
traversing the node root in a middle sequence, and initializing an x coordinate count of the root =0;
if the root is a leaf node, the x coordinate of the root is count, and count + +;
if the root has a child node, the root is traversed through the leaf nodes in a recursion middle-order mode, the x coordinate of the root is the same as that of the child node, otherwise, the child node list of the root is sorted according to the weight, and the child nodes are traversed through the root in a recursion middle-order mode in sequence.
Let the x coordinate of its child node be maximum and minimum values be max and min, then the x coordinate of root is (min + max)/2. After passing the setting of the (x, y) coordinates, the tree layout is completed.
And finally, drawing a power distribution network model blank template, calling equipment elements of a total database according to the obtained coordinates and constraint relations on a grid graph with point coordinates, generating a power distribution network model corresponding to a simulation scheme, then, corresponding network primitives to the equipment elements contained in the database one by one, generating a new primitive topological graph, binding the measurement and control equipment corresponding to each switch or equipment, automatically mapping corresponding measurement and control information to a monitoring main page for display, providing a simplest wiring mode by a subsequent optimal path algorithm, and quickly finishing the wiring work of corresponding test equipment by a tester according to a wiring list to finish the test of a simulation experiment.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A configuration mode dynamic model test system is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the configuration type movable mould primary system comprises a primary simulation subsystem, wherein the primary simulation subsystem comprises a simulation switch assembly, a simulation circuit assembly, a simulation bus assembly, a simulation fault assembly, a simulation grounding assembly, a simulation load assembly and a simulation grounding capacitor, and each assembly forms different application screen cabinets by a standard cabinet group screen;
the configuration type movable mold secondary system comprises a secondary measurement and control subsystem, the secondary measurement and control subsystem is responsible for simulating measurement and control of the configuration type movable mold primary system through measurement and control equipment, and the measurement and control equipment comprises fault wave recording equipment and a multi-mode terminal;
the dynamic model configuration monitoring and management system is used for managing the process of the dynamic model test;
a distributed power system comprising a distributed power simulator;
the communication subsystem is composed of an experimental Ethernet switch and a communication cable thereof and is used for networking communication between the configuration mode movable mould primary system, the configuration mode movable mould secondary system and the movable mould configuration monitoring management system;
the multimode terminal can work in various configuration modes according to the instructions of the dynamic configuration monitoring and management system, and a user can select a proper distribution network feeder automation mode by selecting and verifying different grid structures in various configuration modes;
the configuration type movable secondary system reserves a quick access interface of secondary equipment, can access various intelligent secondary intelligent equipment, and can test and verify externally accessed intelligent measurement and control equipment and evaluate a control strategy and a control logic of the intelligent measurement and control equipment after exiting from the multimode terminal configured by the system;
the method comprises the steps that all kinds of equipment elements are collected, a total database of the movable mould equipment elements is established, data classification is carried out on all kinds of equipment elements, and classified data are updated to the total database to be stored and called;
defining unique labels of various types of equipment elements and constraint conditions of topological relations of the elements;
modeling with a graph: inputting model data, editing and inputting unique labels of component types and quantity of each type of the dynamic model test scheme to be performed, and enabling each component to correspond to an access interface, namely the quantity of nodes;
referring to the correlation, and correlating the network primitive reference topological graph stored in the most approximate dynamic model test scheme database according to the number and the type number of the input nodes;
coordinate capture, namely extracting and analyzing the tree-shaped characteristics of nodes and elements related to the reference topological graph by using a tree layout algorithm after the obtained reference topological graph is obtained, customizing a reference point as an initial node, setting (x, y) coordinates for the nodes and equipment elements, and matching a unique label according to the types of the equipment elements;
drawing a blank template of the power distribution network model, wherein the blank template is a grid graph with point coordinates;
calling equipment elements of a total database according to the unique labels, the number and the corresponding coordinate data and by referring to constraint conditions among the elements to generate a power distribution network model;
the testing method of the configuration mode dynamic simulation testing system is characterized in that all subsystems in the configuration mode dynamic simulation testing system are matched with each other to complete related tests of an active power distribution network, and the testing method further comprises the testing steps of preparing a testing environment and compiling and executing a testing scheme;
the test environment preparation comprises the following steps,
the method comprises the steps that a primary system of the active power distribution network is modeled, a power distribution network model is created and executed, and the system completes corresponding operations according to a topological structure generated by the power distribution network model, wherein the operations comprise automatically completing adjustment of a grounding mode, adjustment of a transformer tap and switching of a tap switch; the system can give the simplest wiring mode according to the optimal algorithm, and testers can quickly complete the wiring work of corresponding equipment according to the wiring list;
adjusting the parameters of the primary system equipment of the movable mould according to the experiment to be tested, wherein the parameters comprise the operation mode of a distributed power supply and the parameter setting of a variable load;
according to the experimental requirement to be tested, accessing secondary control equipment and protection equipment of the configuration mode dynamic secondary system and setting corresponding equipment parameters;
adjusting communication parameters of the communication subsystem to complete the connection of the communication link; the test protocol compilation and execution further includes the steps of,
creating a test case in the dynamic model configuration monitoring and managing system, wherein the test case comprises creating test contents, steps and judgment standards;
starting an experiment of a target test on the dynamic model configuration monitoring management system;
monitoring and managing the running states of the primary equipment and the secondary equipment to be tested through the dynamic configuration monitoring and managing system;
and collecting test data, analyzing test results, and automatically generating a test report according to the template provided by the dynamic configuration monitoring and management system.
2. The configuration-based simulation testing system of claim 1, wherein: the configuration mode dynamic model primary system further comprises a primary access subsystem, the primary access subsystem is composed of a plurality of primary access modules, and the primary access modules are composed of an access bus and a switch assembly.
3. The configuration-based simulation testing system of claim 2, wherein: the secondary measurement and control subsystem is responsible for monitoring, controlling and recording waveforms of all switches in the primary simulation subsystem and the primary access subsystem through the fault recording equipment and the multimode terminal.
4. The configuration-based simulation test system of any one of claims 1 to 3, wherein: the fault recording equipment is responsible for dynamic analysis and fault playback under various tests; the multimode terminal can bear different automatic functions according to different switch positions and configuration roles, and the automatic functions comprise a three-remote terminal, overcurrent protection, a current counting type terminal, a voltage time type terminal, a demarcation switch controller and an intelligent distributed terminal.
5. The configurable simulation test system of claim 4, wherein: the configuration type moving die secondary system further comprises a secondary access subsystem, wherein an access point is reserved at each switch for the secondary system to be tested, and the access points can be used for obtaining the three-phase alternating voltage, the three-phase alternating current and the zero-sequence current.
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