CN113281604A - RT-LAB-based power distribution network self-healing function test system - Google Patents
RT-LAB-based power distribution network self-healing function test system Download PDFInfo
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Abstract
The invention discloses a self-healing function test system of a power distribution network based on RT-LAB, which comprises the following steps: test management system, RT-LAB simulator, power amplifier and quilt are surveyed self-healing device, wherein, test management system respectively with RT-LAB simulator with quilt is surveyed self-healing device communication connection, RT-LAB simulator is used for establishing the simulation model of distribution network, power amplifier is used for receiving the analog signal of RT-LAB simulator output and will analog signal amplifies, quilt is surveyed self-healing device and is used for receiving after the amplification analog signal. According to the invention, the RT-LAB is adopted to construct a simulation model, and a real-time simulation result is output through a signal interface to form a test loop, so that the test accuracy is improved.
Description
Technical Field
The invention relates to the technical field of power distribution network testing, in particular to a power distribution network self-healing function testing system based on RT-LAB.
Background
With the rapid development of modern power grids, the massive access of new energy, the wide use of nonlinear loads and impact loads of power grid alternating current-direct current grid-connected operation, high-voltage large-capacity power electronic equipment and the like, the problem of reliable operation of the power grids is increasingly highlighted, the self-healing function of the power distribution network can realize rapid detection, judgment and isolation of power distribution network faults, the power distribution network self-healing device is applied more and more, and effective testing means or testing systems are lacked for the power distribution network self-healing devices manufactured by various manufacturers. The traditional detection means generally adopts equipment such as a relay protection tester and the like, and detects a single logic execution result of the self-healing device by setting a specified instruction, however, the traditional detection means is difficult to test the function and performance of the whole self-healing device, the functions of a plurality of auxiliary power grids cannot be verified, and especially, the function and performance indexes of a device manufacturer in the propaganda enterprise standard of the device manufacturer cannot be accurately and quantitatively tested before the device manufacturer is put into operation.
Disclosure of Invention
The invention aims to provide a power distribution network self-healing function testing system based on RT-LAB, and aims to solve the problem that the existing detection means is low in efficiency.
In order to achieve the above object, the present invention provides a self-healing function testing system for a power distribution network based on RT-LAB, comprising: test management system, RT-LAB simulator, power amplifier and quilt are surveyed self-healing device, wherein, test management system respectively with RT-LAB simulator with quilt is surveyed self-healing device communication connection, RT-LAB simulator is used for establishing the simulation model of distribution network, power amplifier is used for receiving the analog signal of RT-LAB simulator output and will analog signal amplifies, quilt is surveyed self-healing device and is used for receiving after the amplification analog signal.
Preferably, the test management system comprises a modeling management module and a data management module, wherein the modeling management module is connected with the RT-LAB simulator by adopting an ethernet, the modeling management module is used for managing the optimization of a newly-built model and an existing model in the RT-LAB simulator, the data management module is connected with the tested self-healing device by adopting the ethernet, and the data management module is used for managing the simulation model system data and the tested equipment data of the tested self-healing device.
Preferably, the test management system further includes a test service module and a monitoring management module, wherein the test service module performs data interaction with the modeling management module, the monitoring management module and the data management module respectively, and is used for managing test cases and modeling the system.
Preferably, the RT-LAB-based power distribution network self-healing function test system includes that a model called or created in the modeling management module and data of a model calling or entering system in the data management module are input to the test service module, the test service module tests according to a preset test requirement and inputs a real-time test result to the monitoring management module, and the monitoring management module is configured to automatically record related information and input the related information to the modeling management module, the monitoring management module and the test service module respectively for archiving and generating a test report.
Preferably, the RT-LAB simulator comprises a plurality of analog interfaces, and the power amplifier is connected to the plurality of analog interfaces and is configured to receive the output distribution network bus node three-phase voltage and the feeder current.
Preferably, the RT-LAB simulator further comprises a plurality of digital interfaces, and is a plurality of the digital interface comprises a digital output interface and a digital input interface, the digital output interface is connected with the tested self-healing device for controlling the position information and the on-off state information of the line switch, and the digital input interface is used for receiving the circuit breaker control signal and the switch control signal output by the tested self-healing device.
Preferably, the RT-LAB simulator also comprises a typical network topology model which comprises a typical power distribution network simulation model and an actual power distribution network model and is used for simulating the operation of the power distribution network.
Preferably, the self-healing device under test includes a plurality of analog interfaces, and the plurality of analog interfaces are configured to receive the analog signal amplified by the power amplifier.
Preferably, the tested self-healing device further comprises a plurality of digital interfaces, the digital interfaces comprise digital input interfaces and digital output interfaces, the digital input interfaces are used for receiving control line switch position information and on-off state information output by the RT-LAB simulator, and the digital output interfaces are used for outputting circuit breaker control signals and switch control signals to the RT-LAB simulator.
Preferably, the tested self-healing device is further configured to judge a system fault position by using a preset judgment logic according to the bus node voltage, the line current, the line switch position information and the on-off state information output by the RT-LAB simulator, generate a circuit breaker control signal and a switch control signal, and output the signal to the RT-LAB simulator through the digital output interface of the tested self-healing device.
According to the invention, by constructing the test management system, the RT-LAB simulator, the power amplifier and the tested self-healing device, a simulation model of the power distribution network is established on real-time simulation software, power distribution network simulation is carried out, a real-time simulation result is output through a signal interface and is connected with the tested self-healing device to form a test loop, and the test accuracy is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described 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 that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a self-healing function test system for a power distribution network based on RT-LAB according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a typical network topology of a power distribution network according to another embodiment of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the step numbers used herein are for convenience of description only and are not used as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, the present invention provides a self-healing function testing system for a power distribution network based on RT-LAB, including: the test management system 100 is in communication connection with the RT-LAB simulator 200 and the self-healing device under test 400, the RT-LAB simulator 200 is used for establishing a simulation model of the power distribution network, the power amplifier 300 is used for receiving analog signals output by the RT-LAB simulator 200 and amplifying the analog signals, and the self-healing device under test 400 is used for receiving the amplified analog signals.
Specifically, the test management system 100 is used for managing test cases, modeling and other work, the RT-LAB simulator 200 is used for simulating the operation of a power distribution network, the self-healing device 400 to be tested is a device to be tested for network access, the power amplifier 300 is used for amplifying signals for use, and specifically, the power amplifier 300 is used for amplifying the analog signals output by the RT-LAB simulator 200 to match the input requirements of the self-healing device 400 to simulate input signals.
Further, the test management system 100 includes a modeling management module 110 and a data management module 113, where the modeling management module 110 is connected to the RT-LAB simulator 200 via an ethernet network, the modeling management module 110 is configured to manage a new model and an existing model in the RT-LAB simulator 200 for optimization, the data management module 113 is connected to the self-healing device 400 via an ethernet network, and the data management module 113 is configured to manage simulation model system data of the self-healing device 400 and device under test data.
Further, the test management system 100 further includes a test service module 111 and a monitoring management module 112, wherein the test service module 111 performs data interaction with the modeling management module 110, the monitoring management module 112 and the data management module 113 respectively, so as to manage the test cases and model the system.
Further, data of a model called or newly created in the modeling management module 110 and a model calling or inputting system in the data management module 113 are input to the test service module 111, the test service module 111 performs testing according to a preset testing requirement, and inputs a real-time testing result to the monitoring management module 112, and the monitoring management module 112 is configured to automatically record related information, and input the related information to the modeling management module 110, the monitoring management module 112, and the test service module 111 respectively for archiving and generating a testing report.
Specifically, the test service module 111 is a core module in the test management system 100, wherein the test service module 111 performs information interaction with the modeling management module 110, the test service module 111, the monitoring management module 112, and the data management module 113, the modeling management module 110 is configured to manage a newly-built model and an optimization problem of an existing model in the RT-LAB simulator 200, the test service module 111 is configured to build a test requirement of a previous time, specifically, a standard test requirement template is introduced, then corresponding modification is performed on the basis of a standard according to different points of each test requirement, a test requirement is built before testing, and finally, functions such as automatic test and automatic generation of a test report are embedded, the monitoring management module 112 is configured to supervise operation conditions of the simulation system and the system under test during the test period, the data management module 113 is configured to manage data, and the like of the simulation model system, Device under test data, etc.
For a test, firstly, a required model is called or newly created from the modeling management module 110, model system data is called or entered from the data management module 113, the model and the data are all input to the test service module 111, the test service module 111 performs an automatic test according to a set test requirement, and inputs information and other contents needing attention to the monitoring management module 112, in the test process, the monitoring management module 112 automatically records related information and data during the test, after the detection is finished, the information in the monitoring management module 112 is transmitted to the test service module 111, so as to provide information such as a test process and a test result for the generation of a test report, and meanwhile, the monitoring management module 112 transmits the model used this time to the modeling management module 110 for archiving, and transmits the data corresponding to the model used this time to the data management module 113 for archiving.
Further, the RT-LAB simulator 200 comprises a plurality of analog interfaces AO, and the power amplifier 300 is connected to the plurality of analog interfaces AO, and is configured to receive the three-phase voltage of the bus node of the output distribution network and the feeder current.
Further, the RT-LAB emulator 200 further includes a plurality of digital interfaces including a digital output interface DO and a digital input interface DI, the digital output interface DO is connected to the self-healing device under test 400 and is used for controlling the line switch position information and the on-off state information, and the digital input interface DI is used for receiving the circuit breaker control signal and the switch control signal output by the self-healing device under test 400.
Further, the RT-LAB simulator 200 further comprises a typical network topology model 210, and the typical network topology model 210 comprises a typical power distribution network simulation model and an actual power distribution network model for simulating the operation of the power distribution network.
Referring to fig. 2, specifically, a typical network topology model 210 generally includes typical power distribution network simulation models such as IEEE 14 nodes, IEEE33 nodes, and the like, and a field actual power distribution network model according to a working requirement, where an analog output interface AO generally outputs a three-phase voltage of a bus node of the power distribution network and a feeder current, a digital output interface DO generally outputs a switch position and an on-off state of a line, so as to provide real-time operation state information of the power distribution network for the system, and a digital input interface DI generally receives control signals such as a circuit breaker and a switch, and directly applies the control requirement to the simulation model, so as to obtain a regulation and control result of the self-healing system.
Further, the self-healing device under test 400 includes a plurality of analog interfaces AI for receiving the analog signals amplified by the power amplifier 300.
Specifically, the power amplifier 300 is configured to perform signal amplification on the analog signal output by the RT-LAB emulator 200 to match the input requirement of the analog input signal of the self-healing device under test 400.
Further, the self-healing device under test 400 further comprises a plurality of digital interfaces including a digital input interface DI and a digital output interface DO, the digital input interface DI is used for receiving the control line switch position information and the on-off state information output by the RT-LAB emulator 200, and the digital output interface DO is used for outputting the breaker control signal and the switch control signal to the RT-LAB emulator 200.
Further, the tested self-healing device 400 is further configured to determine a system fault position by using a preset determination logic according to the bus node voltage, the line current, the line switch position information and the on-off state information output by the received RT-LAB simulator 200, generate a breaker control signal and a switch control signal, and output the breaker control signal and the switch control signal to the RT-LAB simulator 200 through the digital output interface DO of the tested self-healing device 400.
Specifically, the tested self-healing device 400 includes a core program logic and an analog/digital interface, the tested self-healing device 400 obtains the bus node voltage, the feeder line current, the line switch position and the on-off state of the power distribution network in real time through the analog input AI and the digital input interface DI, judges the system fault according to the information by using the preset judgment logic, generates control signals such as a breaker and a switch after researching out the fault position, and outputs the control signals to the RT-LAB simulator 200 through the digital output interface DO to realize fault isolation.
The preset judgment logic in the self-healing device 400 to be tested is different according to different products, and generally includes at least the logics of instantaneous current quick-break protection, timing current-limit quick-break protection, timing overcurrent-limit protection, zero-sequence overcurrent I-stage protection, zero-sequence overcurrent II-stage protection, and the like, and is formed by combining the logics.
The invention has the following beneficial effects:
a test loop is formed according to the test management system, the RT-LAB simulator, the power amplifier and the tested self-healing device, a simulation model of the power distribution network is built on real-time simulation software, the simulation model is compiled and downloaded into the RT-LAB simulator to perform power distribution network electromagnetic transient simulation, a real-time simulation result is output through a signal interface and is connected with the tested self-healing device, a flexible and convenient semi-physical simulation test loop is formed, the test loop is closer to an on-site actual test environment, closed-loop test can be performed on the function and performance of the power distribution network self-healing device more accurately, and research and engineering work development are facilitated.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a distribution network self-healing function test system based on RT-LAB which characterized in that includes: test management system, RT-LAB simulator, power amplifier and quilt are surveyed self-healing device, wherein, test management system respectively with RT-LAB simulator with quilt is surveyed self-healing device communication connection, RT-LAB simulator is used for establishing the simulation model of distribution network, power amplifier is used for receiving the analog signal of RT-LAB simulator output and will analog signal amplifies, quilt is surveyed self-healing device and is used for receiving after the amplification analog signal.
2. The RT-LAB based power distribution network self-healing function testing system according to claim 1, wherein the testing management system comprises a modeling management module and a data management module, wherein the modeling management module is connected to the RT-LAB simulator via an ethernet network, the modeling management module is configured to manage optimization of newly built models and existing models in the RT-LAB simulator, the data management module is connected to the self-healing device under test via the ethernet network, and the data management module is configured to manage simulation model system data of the self-healing device under test and device under test data.
3. The RT-LAB based power distribution network self-healing function test system according to claim 2, wherein the test management system further comprises a test service module and a monitoring management module, wherein the test service module performs data interaction with the modeling management module, the monitoring management module and the data management module respectively, so as to manage test cases and system modeling.
4. The RT-LAB based power distribution network self-healing function test system according to claim 3, wherein the RT-LAB based power distribution network self-healing function test system includes inputting a model called or created in the modeling management module and data called or entered in the data management module into the test service module, the test service module performs a test according to a preset test requirement and inputs a real-time test result into the monitoring management module, and the monitoring management module is configured to automatically record related information and input the related information into the modeling management module, the monitoring management module and the test service module respectively for archiving and generating a test report.
5. The RT-LAB based power distribution network self-healing function test system according to claim 4, wherein the RT-LAB emulator includes a plurality of analog interfaces, and the power amplifier is connected to the plurality of analog interfaces and configured to receive and output three-phase voltages of bus nodes of the power distribution network and feeder currents.
6. The RT-LAB based power distribution network self-healing function testing system according to claim 5, wherein the RT-LAB emulator further comprises a plurality of digital interfaces, and the plurality of digital interfaces comprise a digital output interface and a digital input interface, the digital output interface is connected to the self-healing device under test for controlling the line switch position information and the on-off state information, and the digital input interface is configured to receive the circuit breaker control signal and the switch control signal output by the self-healing device under test.
7. The RT-LAB based power distribution network self-healing function test system according to claim 6, wherein the RT-LAB simulator further comprises a typical network topology model, the typical network topology model comprising a typical power distribution network simulation model and an actual power distribution network model, for simulating power distribution network operation.
8. The RT-LAB based power distribution network self-healing function test system according to claim 7, wherein the self-healing device under test comprises a plurality of analog interfaces for receiving the analog signals amplified by the power amplifier.
9. The RT-LAB based power distribution network self-healing function test system according to claim 8, wherein the tested self-healing device further comprises a plurality of digital interfaces, the plurality of digital interfaces comprise a digital input interface and a digital output interface, the digital input interface is configured to receive control line switch position information and on-off state information output by the RT-LAB simulator, and the digital output interface is configured to output a breaker control signal and a switch control signal to the RT-LAB simulator.
10. The RT-LAB based power distribution network self-healing function test system according to claim 9, wherein the tested self-healing device is further configured to determine a system fault location by using a preset determination logic according to the bus node voltage, the line current, the line switch location information, and the on-off status information received from the RT-LAB simulator, generate a breaker control signal and a switch control signal, and output the breaker control signal and the switch control signal to the RT-LAB simulator through the digital output interface of the tested self-healing device.
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