CN211478507U - Feeder automation function testing device - Google Patents
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- CN211478507U CN211478507U CN201922151267.1U CN201922151267U CN211478507U CN 211478507 U CN211478507 U CN 211478507U CN 201922151267 U CN201922151267 U CN 201922151267U CN 211478507 U CN211478507 U CN 211478507U
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Abstract
The utility model provides a feeder automation functional test device, include: main control unit, real-time digital simulation appearance and a plurality of distribution terminal tester, wherein: the main controller is connected with the real-time digital simulator and is connected with a plurality of power distribution terminal testers through a wireless network; each power distribution terminal tester is connected with a tested power distribution automatic terminal, the main controller is used for building a power distribution network real-time digital simulation model according to a tested feeder automatic configuration area power distribution network space frame structure and the operation mode thereof, and the real-time digital simulation instrument is used for carrying out real-time simulation according to the power distribution network real-time digital simulation model and generating waveform files of different network nodes with the same section. The utility model provides a feeder automation functional test device can test distribution automation terminal under non-laboratory environment, has positive meaning to the popularization of feeder automation functional test.
Description
Technical Field
The utility model relates to an electric power industry field belongs to feeder automation functional test technical field, especially concretely relates to feeder automation functional test device.
Background
Feeder automation is an important component of a distribution automation system, and mainly realizes positioning, isolation and recovery of distribution network faults. Feeder automation is mainly classified into centralized, in-situ recloser, intelligent distributed, and the like. Due to the fact that the power distribution network frame structure is complex, operation modes are various, and logics and parameters of different feeder automation are different. In order to ensure that feeder automation can effectively process the power distribution network faults and shorten the fault recovery time of the power distribution network, functional test needs to be carried out on the feeder automation before the feeder automation is put into operation.
In the prior art, it is unrealistic to send each feeder automation device to a laboratory for function test. The method is unrealistic for the conditions that the power distribution network is large in scale, the number of lines is large, and part of the lines are remote, so that a set of portable feeder automation function test system is designed to test the distribution automation terminal in non-laboratory environments such as cities, county companies or engineering sites, and the method has positive significance for verifying feeder automation function logic and improving fault handling capacity of the distribution automation terminal.
SUMMERY OF THE UTILITY MODEL
The utility model provides a feeder automation functional test device can test distribution automation terminal under non-laboratory environment, has positive meaning to the popularization of feeder automation functional test.
In order to achieve the above object, there is provided a feeder automation function test apparatus including: main control unit, real-time digital simulation appearance and a plurality of distribution terminal tester, wherein:
the main controller is connected with the real-time digital simulator and is connected with a plurality of power distribution terminal testers through a wireless network;
each distribution terminal tester is connected with a tested distribution automatic terminal,
the main controller is used for building a power distribution network real-time digital simulation model according to the power distribution network space frame structure of the tested feeder automation configuration area and the operation mode of the power distribution network space frame structure, and the real-time digital simulator is used for carrying out real-time simulation according to the power distribution network real-time digital simulation model and generating waveform files of different network nodes with the same section.
In one embodiment, the master controller is connected to a plurality of distribution terminal testers via a 4G network or a 5G network.
In one embodiment, the power distribution terminal tester is provided with a GPS time synchronization module.
In one embodiment, the power distribution terminal tester is provided with a Beidou time synchronization module.
In one embodiment, the real-time digital simulator is a portable RTDS.
In one embodiment, the real-time digital simulation model of the power distribution network comprises: the fault model comprises a two-phase short-circuit fault model, a three-phase short-circuit fault model, a metallic single-phase earth fault model, a low-resistance earth fault model, a high-resistance earth fault model and an arc earth fault model.
In one embodiment, the waveform file includes: a two-phase short-circuit fault model waveform file, a three-phase short-circuit fault model waveform file, a metallic single-phase ground fault model waveform file, a low-resistance ground fault model waveform file, a high-resistance ground fault model waveform file, and an arc ground fault model waveform file.
In one embodiment, the main controller is further configured to control the power distribution terminal tester to perform analog quantity precision verification, remote signaling quantity verification, control quantity verification, and alarm signal verification on the tested power distribution automation terminal.
In one embodiment, the main controller is further configured to download the waveform file to a corresponding power distribution terminal tester, issue a synchronous trigger instruction, and control the power distribution terminal tester to synchronously play back the waveform file according to a trigger appointed time.
In one embodiment, the power distribution terminal tester includes: 4 groups alternating current voltage volume output port, 4 groups alternating current flow output port, 8 way switching value input terminals, 4 way switching value output terminals and at least one set of network interface.
From the above description, the feeder automation function testing device provided by the utility model comprises a main controller, a real-time digital simulator and a plurality of power distribution terminal testers, wherein the power distribution terminal testers are connected with the main controller; the main controller is networked with the power distribution terminal tester through a wireless network; each power distribution terminal tester is connected with one tested power distribution automatic terminal. The utility model provides a device can carry out synchronous test to many distribution automation terminals in non-laboratory environment such as city, county power supply company, engineering scene, can carry out foundation tests such as data acquisition, remote signaling function, control function to many distribution automation terminals in step. And simultaneously, the utility model discloses can carry out real-time digital modeling according to distribution network spatial grid structure and operation mode to the same fault section different lines of synchronous inversion and the fault waveform of segmentation verify feeder automation's whole fault handling logic.
The utility model provides a feeder automation functional test device, the beneficial effect who compares with prior art: the method can realize synchronous waveform inversion of multiple distribution automation terminals, maximally simulate the real fault environment of the distribution network, improve the logical verification capability of feeder automation, and has good application prospect in improving the fault processing effect of feeder automation and practical delivery. And simultaneously, the utility model discloses can test distribution automation terminal under the non-laboratory environment, have positive meaning to the popularization of feeder automation functional test.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a feeder automation function testing apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a testing procedure performed by the feeder automation function testing apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Aiming at the problems that in the prior art, synchronous waveform inversion can not be carried out on a plurality of distribution automation terminals, the real fault environment of a power distribution network cannot be simulated accurately and furthest, and the feeder automation logic verification capability is improved. Meanwhile, the power distribution automation terminal must be tested in a non-laboratory environment. An embodiment of the utility model provides a feeder automation functional test device embodiment, feeder automation functional test device specifically includes: main control unit, real-time digital simulation appearance and a plurality of distribution terminal tester, wherein:
the main controller is connected with the real-time digital simulator and is connected with a plurality of power distribution terminal testers through a wireless network;
each distribution terminal tester is connected with a tested distribution automatic terminal,
it is understood that feeder automation is the use of an automated device or system to monitor the operating conditions of the distribution network, discover faults in the distribution network in time, and locate, isolate and restore power to non-faulty areas. The main controller is used for building a power distribution network real-time digital simulation model according to the power distribution network space frame structure of the tested feeder automation configuration area and the operation mode of the power distribution network space frame structure, and the real-time digital simulator is used for carrying out real-time simulation according to the power distribution network real-time digital simulation model and generating waveform files of different network nodes with the same section. Preferably, the real-time digital simulator is a portable RTDS (real time digital simulation system). It can be understood that the real-time digital simulation technology not only has the characteristics of digital simulation, but also more importantly, the adoption of the parallel processing technology and the design of special hardware ensure the real-time performance of RTDS operation and the capability of closed-loop test, and can complete the real-time simulation operation of a large-scale power system on the step length of 50 mus. The feeder automation function testing device provided by the embodiment can be used for synchronously testing a plurality of distribution automation terminals in a remote area without laboratory conditions. The distribution automation terminal is a general name of various remote monitoring and control units installed in a power distribution network and mainly comprises a feeder terminal, a station terminal, a distribution transformer terminal and the like.
From the above description, the feeder automation function testing device provided by the utility model comprises a main controller, a real-time digital simulator and a plurality of power distribution terminal testers, wherein the power distribution terminal testers are connected with the main controller; the main controller is networked with the power distribution terminal tester through a wireless network; each power distribution terminal tester is connected with one tested power distribution automatic terminal. The utility model provides a device can carry out synchronous test to many distribution automation terminals in non-laboratory environment such as city, county power supply company, engineering scene, can carry out foundation tests such as data acquisition, remote signaling function, control function to many distribution automation terminals in step. And simultaneously, the utility model discloses can carry out real-time digital modeling according to distribution network spatial grid structure and operation mode to the same fault section different lines of synchronous inversion and the fault waveform of segmentation verify feeder automation's whole fault handling logic.
In one embodiment, the main controller is connected with a plurality of power distribution terminal testers through a 4G network or a 5G network.
Specifically, the main controller and the power distribution terminal tester are both provided with a 4G communication module or a 5G communication module, so that networking is performed with the plurality of power distribution terminal testers, and then a test task is completed and a synchronous trigger instruction is issued. The main controller controls a plurality of power distribution terminal testers to carry out conventional test items such as analog quantity verification, input/output verification, protection alarm signal verification and the like; according to actual test requirements, the main controller can realize time-sharing, simultaneous or sequential test of conventional test items of different power distribution terminal testers.
In one embodiment, the power distribution terminal tester is provided with a GPS time setting module.
In one embodiment, the power distribution terminal tester is provided with a big dipper time setting module.
It can be understood that each power distribution terminal tester is provided with a GPS/Beidou time synchronization module, so that time synchronization among a plurality of power distribution terminal testers is completed, and then synchronous testing of a plurality of tested power distribution automatic terminals is realized.
The GPS time synchronization module takes a GPS signal as a time source, can select a server of a Beidou, CDMA, B code and other time sources, embeds NTP/SNTP protocol, synchronizes all computers, controllers and other equipment in a network, and realizes network time service.
In one embodiment, the real-time digital simulator is a portable RTDS.
In one embodiment, the real-time digital simulation model of the power distribution network includes: the fault model comprises a two-phase short-circuit fault model, a three-phase short-circuit fault model, a metallic single-phase earth fault model, a low-resistance earth fault model, a high-resistance earth fault model and an arc earth fault model.
The power distribution terminal tester is connected with the main controller through a network; according to the feeder automation configuration regional distribution network frame structure, an RTDS real-time digital simulation model is built in a main controller, and a plurality of RTDS models can be built according to different operation modes; in the built model, faults such as a two-phase short-circuit fault, a three-phase short-circuit fault, a metallic single-phase earth fault, a low-resistance earth fault, a high-resistance earth fault, an arc light earth fault and the like are respectively set; and the power distribution terminal tester carries out real-time simulation calculation and generates a fault waveform file.
In one embodiment, the waveform file includes: a two-phase short-circuit fault model waveform file, a three-phase short-circuit fault model waveform file, a metallic single-phase ground fault model waveform file, a low-resistance ground fault model waveform file, a high-resistance ground fault model waveform file, and an arc ground fault model waveform file.
In an embodiment, the main controller is further configured to control the power distribution terminal tester to perform analog quantity precision verification, remote signaling quantity verification, controlled quantity verification, and alarm signal verification on the tested power distribution automation terminal.
It can be understood that, for the control power distribution terminal tester to carry out analog quantity precision verification, remote signaling quantity verification, control quantity verification and alarm signal verification on the tested power distribution automatic terminal, manual testing or automatic program control testing can be selected.
In an embodiment, the main controller is further configured to download the waveform file to a corresponding power distribution terminal tester, issue a synchronous trigger instruction, and control the power distribution terminal tester to synchronously play back the waveform file according to a trigger appointed time.
It will be appreciated that after synchronous playback of the waveform files, the test feeders automate the fault discrimination, location, isolation and restoration logic.
In one embodiment, the power distribution terminal tester includes: 4 groups alternating current voltage volume output port, 4 groups alternating current flow output port, 8 way switching value input terminals, 4 way switching value output terminals and at least one set of network interface.
The 3 groups of alternating current voltage output ports of the power distribution terminal tester are connected with the terminals of the tested power distribution automatic terminal to output alternating current voltage; the 3 groups of alternating current magnitude output ports of the power distribution terminal tester are connected with the tested power distribution automatic terminal to output alternating current magnitude; the distribution terminal tester is connected with the tested distribution automatic terminal through a network interface, and analog quantity read-back and remote signaling quantity acquisition of the tested distribution automatic terminal are achieved.
Preferably, the power distribution terminal tester is a portable power distribution terminal tester, and an alternating current voltage output port of the portable power distribution terminal tester is connected with a terminal of the tested power distribution automatic terminal to output alternating current voltage; the alternating current flow output port of the portable power distribution terminal tester is connected with the tested power distribution automatic terminal to output the alternating current amount; the portable power distribution terminal tester is connected with the tested power distribution automatic terminal through a network interface, and analog quantity read-back and remote signaling quantity acquisition of the tested power distribution automatic terminal are achieved.
From the above description, the feeder automation function testing device provided by the utility model comprises a main controller, a real-time digital simulator and a plurality of power distribution terminal testers, wherein the power distribution terminal testers are connected with the main controller; the main controller is networked with the power distribution terminal tester through a wireless network; each power distribution terminal tester is connected with one tested power distribution automatic terminal. The utility model provides a device can carry out synchronous test to many distribution automation terminals in non-laboratory environment such as city, county power supply company, engineering scene, can carry out foundation tests such as data acquisition, remote signaling function, control function to many distribution automation terminals in step. And simultaneously, the utility model discloses can carry out real-time digital modeling according to distribution network spatial grid structure and operation mode to the same fault section different lines of synchronous inversion and the fault waveform of segmentation verify feeder automation's whole fault handling logic.
The utility model provides a feeder automation functional test device, the beneficial effect who compares with prior art: the method can realize synchronous waveform inversion of multiple distribution automation terminals, maximally simulate the real fault environment of the distribution network, improve the logical verification capability of feeder automation, and has good application prospect in improving the fault processing effect of feeder automation and practical delivery. And simultaneously, the utility model discloses can test distribution automation terminal under the non-laboratory environment, have positive meaning to the popularization of feeder automation functional test.
For further explanation of the present application, the following description is provided with specific application examples in conjunction with a method for using a feeder automation function testing device.
Referring to fig. 1, the feeder automation function testing apparatus provided in this embodiment includes: 1 set of portable RTDS, 1 main controller and a plurality of portable power distribution terminal testers.
As shown in fig. 1, the portable RTDS1 is connected to the main controller 2 via a network; according to the feeder automation configuration regional distribution network frame structure, an RTDS real-time digital simulation model is built in the main controller 2, and a plurality of RTDS models can be built according to different operation modes; in the built model, faults such as a two-phase short-circuit fault, a three-phase short-circuit fault, a metallic single-phase earth fault, a low-resistance earth fault, a high-resistance earth fault, an arc light earth fault and the like are respectively set; the portable RTDS1 performs real-time simulation calculations and generates a fault waveform file.
The main controller 2 and the plurality of portable power distribution terminal testers 3n are networked through the wireless 4G module; the main controller 2 and the portable power distribution terminal tester 3n perform network time synchronization; the main controller 2 controls the portable power distribution terminal tester 3n to carry out conventional function verification such as analog quantity precision verification, remote signal verification, control quantity verification, alarm signal verification and the like on the tested power distribution automatic terminal 4n, and the control mode can be manual testing or automatic program control testing; the main controller 2 downloads the fault waveform file to the corresponding portable power distribution terminal tester 3n, the main controller 2 issues a synchronous trigger instruction, the portable power distribution terminal testers 3n are controlled to synchronously replay the fault waveform file according to trigger appointed time, and feeder automation fault judgment, positioning, isolation and recovery logic are tested.
Each portable power distribution terminal tester 3n is provided with a GPS/Beidou time synchronization module, so that time synchronization among the portable power distribution terminal testers 3n is realized.
The portable power distribution terminal tester 3n is provided with 4 groups of alternating current voltage output ports, 4 groups of alternating current flow output ports, 8-path switching value input terminals, 4 paths of switching value output terminals and at least one group of network interfaces; 3 groups of alternating current voltage output ports of portable power distribution terminal tester 3n and U of tested power distribution automatic terminal 4nAB、UCBAnd U0The terminals are connected to output alternating voltage; 3 groups of alternating current output ports of the portable distribution terminal tester 3n and I of the tested distribution automatic terminal 4nA、ICAnd I0Or IA、IBAnd ICConnecting and outputting the alternating current amount; portable distribution terminal tester 3n passes through network interface with by distribution automation terminal 4n and links to each other, realizes by the analog quantity readback and the telesignalling volume collection of distribution automation terminal 4n, wherein: u shapeABFor AB phase line voltage, UCBFor the voltage, U, of the phase line CB0Is a zero sequence voltage; i isAIs phase A current, IBIs phase B current, ICIs C phase current, I0Is a zero sequence current.
Referring to fig. 2, the test procedure using the feeder automation function test apparatus is as follows:
and S0, connecting the portable RTDS with the main controller.
According to the tested feeder line automatic configuration area power distribution network frame structure and the operation mode thereof, a power distribution network real-time digital simulation model is built in a main controller; running the built model according to different running modes, and checking the reasonability of the model;
and S1, reasonably selecting fault points according to the grid structure, and respectively setting faults such as a two-phase short-circuit fault, a three-phase short-circuit fault, a metallic single-phase earth fault, a low-resistance earth fault, a high-resistance earth fault, an arc earth fault and the like at different fault points to generate fault waveform files.
And S2, respectively placing the portable power distribution terminal testers near the tested power distribution automatic terminals and wiring, wherein the test site can be a laboratory or non-laboratory environment.
And S3, debugging the GPS/Beidou time synchronization module of the portable power distribution terminal tester, and keeping the time synchronization of the portable power distribution terminal testers.
And S4, debugging the main controller and the 4G communication modules of the portable power distribution terminal testers to complete wireless communication networking.
And S5, the main controller downloads the fault waveform file to the corresponding portable power distribution terminal tester through a wireless network.
And S6, editing the conventional test items in the main controller.
Controlling each portable power distribution terminal tester to carry out conventional test items such as analog quantity precision test, remote communication quantity test, control quantity test, alarm signal test and the like on the tested power distribution automatic terminal;
and S7, editing the feeder automation fault handling logic test items in the main controller.
And sending a synchronous trigger instruction through a 4G wireless channel to finish synchronous playback of fault waveforms of the portable power distribution terminal testers, and realizing the synchronous test of feeder automation fault processing logic.
And S8, the main controller automatically analyzes the test result data.
The main controller automatically analyzes the test result data, compares the test result data with a set strategy, and automatically generates a test report.
From the above description, the feeder automation function testing device provided by the utility model comprises a main controller, a real-time digital simulator and a plurality of power distribution terminal testers, wherein the power distribution terminal testers are connected with the main controller; the main controller is networked with the power distribution terminal tester through a wireless network; each power distribution terminal tester is connected with one tested power distribution automatic terminal. The utility model provides a device can carry out synchronous test to many distribution automation terminals in non-laboratory environment such as city, county power supply company, engineering scene, can carry out foundation tests such as data acquisition, remote signaling function, control function to many distribution automation terminals in step. And simultaneously, the utility model discloses can carry out real-time digital modeling according to distribution network spatial grid structure and operation mode to the same fault section different lines of synchronous inversion and the fault waveform of segmentation verify feeder automation's whole fault handling logic.
The utility model provides a feeder automation functional test device, the beneficial effect who compares with prior art: the method can realize synchronous waveform inversion of multiple distribution automation terminals, maximally simulate the real fault environment of the distribution network, improve the logical verification capability of feeder automation, and has good application prospect in improving the fault processing effect of feeder automation and practical delivery. And simultaneously, the utility model discloses can test distribution automation terminal under the non-laboratory environment, have positive meaning to the popularization of feeder automation functional test.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results.
Although embodiments of the present description provide method steps as described in embodiments or flowcharts, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
Claims (10)
1. A feeder automation function testing device, comprising: main control unit, real-time digital simulation appearance and a plurality of distribution terminal tester, wherein:
the main controller is connected with the real-time digital simulator and is connected with a plurality of power distribution terminal testers through a wireless network;
each distribution terminal tester is connected with a tested distribution automatic terminal,
the main controller is used for building a power distribution network real-time digital simulation model according to the power distribution network space frame structure of the tested feeder automation configuration area and the operation mode of the power distribution network space frame structure, and the real-time digital simulator is used for carrying out real-time simulation according to the power distribution network real-time digital simulation model and generating waveform files of different network nodes with the same section.
2. The feeder automation functionality test device of claim 1, wherein the master controller is connected to a plurality of distribution terminal testers over a 4G network or a 5G network.
3. The feeder automation function testing device of claim 1, wherein the power distribution terminal tester is provided with a GPS time tick module.
4. The feeder automation functional test device of claim 1 wherein the power distribution terminal tester is provided with a Beidou time tick module.
5. The feeder automation functionality test device of claim 1 wherein the real time digital simulator is a portable RTDS.
6. The feeder automation function testing device of claim 1, wherein the real-time digital simulation model of the power distribution network comprises: the fault model comprises a two-phase short-circuit fault model, a three-phase short-circuit fault model, a metallic single-phase earth fault model, a low-resistance earth fault model, a high-resistance earth fault model and an arc earth fault model.
7. The feeder automation functionality test device of claim 1, wherein the waveform file comprises: a two-phase short-circuit fault model waveform file, a three-phase short-circuit fault model waveform file, a metallic single-phase ground fault model waveform file, a low-resistance ground fault model waveform file, a high-resistance ground fault model waveform file, and an arc ground fault model waveform file.
8. The feeder automation function testing device of claim 1, wherein the main controller is further configured to control a power distribution terminal tester to perform analog quantity precision verification, remote signaling quantity verification, control quantity verification and alarm signal verification on the tested power distribution automation terminal.
9. The feeder automation function testing device of claim 1, wherein the main controller is further configured to download the waveform file to a corresponding power distribution terminal tester, and to issue a synchronous trigger command to control the power distribution terminal tester to synchronously play back the waveform file at a trigger appointed time.
10. The feeder automation functionality test device of claim 1, the power distribution terminal tester comprising: 4 groups alternating current voltage volume output port, 4 groups alternating current flow output port, 8 way switching value input terminals, 4 way switching value output terminals and at least one set of network interface.
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| CN110865277A (en) * | 2019-12-04 | 2020-03-06 | 国网冀北电力有限公司电力科学研究院 | Feeder automation function testing device |
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