CN110927482A - Automatic hybrid test system and method for distribution automation feeder terminal equipment - Google Patents

Automatic hybrid test system and method for distribution automation feeder terminal equipment Download PDF

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Publication number
CN110927482A
CN110927482A CN201911085496.6A CN201911085496A CN110927482A CN 110927482 A CN110927482 A CN 110927482A CN 201911085496 A CN201911085496 A CN 201911085496A CN 110927482 A CN110927482 A CN 110927482A
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China
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terminal equipment
test
data
remote
feeder terminal
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CN201911085496.6A
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余南华
周克林
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GUANGZHOU STRATAC INFORMATION TECHNOLOGY Co Ltd
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GUANGZHOU STRATAC INFORMATION TECHNOLOGY Co Ltd
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Priority to CN201911085496.6A priority Critical patent/CN110927482A/en
Publication of CN110927482A publication Critical patent/CN110927482A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers

Abstract

The invention discloses an automatic hybrid test system and method for distribution automation feeder terminal equipment, wherein the system comprises a feeder terminal equipment controller test device and a breaker simulation device, the feeder terminal equipment controller test device comprises an industrial personal computer, a switch, an analog output module, an output module and a high-speed switching value input module, and the switch is respectively connected with the industrial personal computer, the analog output module, the output module, the high-speed switching value input module, the breaker simulation device and a tested feeder terminal equipment controller. The invention has different power grid test scenes suitable for the automatic test of the feeder terminal equipment, the tracking test of the power grid company on the product defects of the feeder terminal equipment and the automatic test of the product quality control of a feeder terminal equipment manufacturer.

Description

Automatic hybrid test system and method for distribution automation feeder terminal equipment
Technical Field
The invention relates to an automatic hybrid test system and method for distribution automation feeder terminal equipment, and belongs to the field of remote terminal automation test of a distribution network automation system.
Background
In a distribution network automation system, a Feeder Terminal Unit (FTU) is a distribution automation terminal installed on a pole of a distribution network feeder circuit and at a switch cabinet, etc., and having remote signaling, remote sensing, remote control, and feeder automation functions. The feeder terminal equipment of a manufacturer needs to obtain network access qualifications such as a type test certificate and the like in a national level organization; before the delivery of a bidding product for a power grid company, quality control is needed in the processes of raw material purchase, production, test, detection and the like to obtain a product qualification certificate; when the product is delivered for inspection, the gate of the relevant department of the power grid company carries out the inspection of the arrival according to the inspection outline. The detection content of the feeder line terminal equipment is divided into a basic function and a matching function in the aspect of function, and specifically divided into data acquisition of state quantity and analog quantity, a control function of switching on and off and a standby power supply, data transmission such as time correction and meter reading, a local maintenance function, a remote maintenance function and the like, other functions such as recording of various faults and event sequences and local functions, the detection content can be divided into basic function performance, protection logic, a protocol and point table, equipment safety and expansion test according to the types of test items, and the total number of the test items of each set of feeder line terminal equipment is more than 50. Therefore, the feeder terminal equipment detects service requirements such as production detection from manufacturers, arrival inspection of power grid companies, field test of power distribution networks and the like. The current state of the art of testing feeder terminal equipment is as follows: 1) it is desirable that the feeder terminal automated test system be able to sink to a first line of service, such as a production line of feeder terminal equipment, a "team" class of a power grid company, and a portable mobile test environment; 2) the test personnel is required to have higher comprehensive quality, the test process is complex, the time consumption is long, and the efficiency is low; 3) some test data need to be input manually, the detection result judgment needs manual intervention, and the consistency of repeated test results is difficult to ensure; 4) test data cannot be fully utilized, analyzed and mined, such as "familial" defects, "genetic" defects of feeder terminal equipment, "short board" modules of products, and the like.
In a distribution network automation system, an automatic test technology of a feeder terminal device is divided into a distribution automation FTU test system, a dynamic simulation system, a Rapid Control Prototype (RCP) simulation system, and a hardware-in-the-loop (HIL) simulation system. The distribution automation feeder terminal equipment test system comprises a device and software, wherein the device comprises an industrial personal computer, a switch, a tester, a standby power supply and the like, is divided into portable equipment and standard cabinet type equipment, and has the characteristics of strong hardware and weak software, and the equipment is seriously solidified and lacks of test flexibility. The dynamic simulation system is an off-line system simulation (such as Simulink and simcap tool box of Matlab) realized by software, but cannot obtain functional and performance test data from a physical layer. The RCP and the HIL are both based on a semi-physical simulation method, wherein the RCP is based on a virtual controller and an actual object, and the HIL is based on the actual controller and the virtual object, and the RCP and the HIL are both applied to the field of automatic testing of the power distribution network. Based on RTDS simulation test technology, for example: the system comprises a power distribution network distributed test system, a distributed distribution network automatic hybrid simulation system, a logic power distribution terminal and a communication method of the distributed distribution network automatic system, a measuring method of the operation delay of a wide-area closed-loop control system of a power system, a micro-grid system stability simulation test platform, a power and communication semi-physical simulation system and a construction method. Other semi-physical simulation methods, such as: the system comprises a semi-physical simulation test system based on RT-LAB (reverse transcription-laboratory) simulation test system for testing the protection performance of a ship direct-current circuit breaker, a low-cost relay protection teaching experiment platform based on an ARM (advanced RISC machine) framework, a power information physical hardware-in-loop safety simulation test platform, a semi-physical simulation grid-connected detection system and method, a switch test system and test method based on semi-physical simulation, a test system based on hardware-in-loop equipment, a doubly-fed fan subsynchronous resonance hardware-in-loop test system and the like.
At present, most of the fields are based on a distribution automation feeder terminal equipment test system, are limited by field physical connection of a circuit breaker, and are applied to single-item test of a feeder terminal equipment module; the RTDS or RT-LAB semi-physical simulation device and the method thereof are applied to macro application scenes of distribution network automatic tests such as a micro-grid system, a distributed distribution automation system, a power system wide-area closed-loop control system and the like; other semi-physical simulation devices and methods thereof are applied to local application scenes of automatic testing of power distribution networks such as direct-current breaker protection, switch testing systems, relay protection, power communication and logic power distribution terminals and application scenes such as testing processes of multiple testing objects.
The device has the defects that the device is based on a distribution automation feeder terminal equipment test system, is applied to the single test of a feeder terminal equipment module, and has low test efficiency; the RTDS simulation test system is high in price and difficult to sink to the first line of the distribution automation feeder terminal equipment service, such as a feeder terminal equipment product production line, a power grid operation and maintenance 'team' and a mobile field environment thereof; other semi-physical simulation devices and methods thereof cannot completely cover all test items required by the automatic test of the feeder terminal equipment.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides an automatic hybrid test system of distribution automation feeder terminal equipment, which has different power grid test scenes suitable for the automatic test of the feeder terminal equipment, tracking test of a power grid company on the product defects of the feeder terminal equipment and automatic test of product quality control of a feeder terminal equipment manufacturer.
Another object of the present invention is to provide an automated hybrid testing method of a distribution automation feeder terminal device.
The purpose of the invention can be achieved by adopting the following technical scheme:
an automatic hybrid test system of distribution automation feeder terminal equipment comprises a feeder terminal equipment controller test device and a breaker simulation device, wherein the feeder terminal equipment controller test device comprises an industrial personal computer, a switch, an analog output module, an output module and a high-speed switching value input module;
the analog quantity output module is used for acquiring data of the telemetering data acquisition module in the tested feeder terminal equipment controller, checking whether the telemetering function in the tested feeder terminal equipment controller is qualified or not, analyzing the data into telemetering data according to message data acquired by the simulation master station, and analyzing corresponding data according to the point table;
the output quantity output module is used for acquiring data of a remote signaling data acquisition module in the tested feeder terminal equipment controller, checking whether a remote signaling function in the tested feeder terminal equipment controller is qualified or not, analyzing the data into remote signaling data according to message data acquired by the simulation master station, and analyzing corresponding data according to the point table;
the high-speed switching value input module is used for acquiring response data of the remote control node output module in the tested feeder terminal equipment controller about the tested feeder terminal equipment, checking whether a remote control function in the tested feeder terminal equipment controller is qualified or not, sending a remote control message according to the simulation master station, and checking a response index of the tested feeder terminal equipment;
the circuit breaker simulation device is used for simulating the function of a switch body of a circuit breaker in the tested feeder terminal equipment.
Furthermore, the industrial personal computer is provided with an RS-485 communication interface and an RS-232 communication interface.
Furthermore, the switch is provided with two Ethernet interfaces, wherein one Ethernet interface is used for data communication between the feeder terminal equipment controller testing device and the feeder terminal equipment controller, and the other Ethernet interface is used for data communication between the feeder terminal equipment controller testing device and the distribution automation remote test management platform.
Furthermore, the circuit breaker simulation device is provided with a voltage transformer, a current transformer, an aviation socket and a socket on the three-phase load side of the three-phase power supply.
Further, feeder terminal equipment controller testing arrangement still includes wireless communication module, wireless communication module links to each other with the switch.
Further, the wireless communication module is provided with a wireless communication SMA interface to realize the switching of various wireless communication networks.
Furthermore, feeder terminal equipment controller testing arrangement still includes the extension module, the extension module links to each other with the switch for feeder terminal equipment controller testing arrangement's function extension.
Furthermore, the feeder terminal equipment controller testing device and the circuit breaker simulation device are arranged in a cabinet.
The other purpose of the invention can be achieved by adopting the following technical scheme:
an automatic hybrid test method for distribution automation feeder terminal equipment comprises a communication protocol test and a breaker simulation device test;
the communication protocol test comprises the following steps:
the method comprises the following steps of realizing configuration and establishing of an analog master station, connecting the tested feeder terminal equipment, and executing the following operations under the normal communication condition:
in the reset/restart abnormal signal detection process, resetting/restarting the tested feeder line terminal equipment, receiving remote signaling data and remote measuring data of the tested feeder line terminal equipment, analyzing the remote signaling data and the remote measuring data, judging that the remote signaling data and the remote measuring data are qualified if the analyzed remote signaling data and the remote measuring data are consistent with an expected value, and otherwise, judging that the remote signaling data and the remote measuring data are unqualified;
in a 104 link disconnection reconnection process, if reconnection is carried out within a specified time, receiving remote signaling data and remote measuring data of a tested feeder terminal device, analyzing the remote signaling data and the remote measuring data, if the analyzed remote signaling data and the analyzed remote measuring data are consistent with an expected value, judging that the remote signaling data and the remote measuring data are qualified, and if not, judging that the remote signaling data and the remote measuring data are unqualified;
in the remote signaling test process, receiving remote signaling data of the tested feeder line terminal equipment, if the state and time of remote signaling are correct, judging that the remote signaling function of the tested feeder line terminal equipment is qualified, otherwise, judging that the remote signaling function of the tested feeder line terminal equipment is unqualified;
filling in a remote control address bit and a remote control state in a remote control test flow, if the state of the tested feeder line terminal equipment is consistent with the filled remote control state, judging that the remote control function of the tested feeder line terminal equipment is qualified, otherwise, judging that the remote control function of the tested feeder line terminal equipment is unqualified;
and in the remote measuring test process, filling in a remote measuring address bit and a state, if the state of the tested feeder line terminal equipment is consistent with the filled remote measuring state, judging that the remote measuring function of the tested feeder line terminal equipment is qualified, and otherwise, judging that the remote measuring function of the tested feeder line terminal equipment is unqualified.
Further, the circuit breaker simulation device testing comprises:
under the condition that the test instrument can be connected and the simulation main station can be connected with the feeder terminal equipment to be tested, the following operations are carried out:
detecting voltage/voltage difference, and setting output by a testing instrument, wherein the voltage amplitudes are different and the others are the same;
detecting frequency difference, and setting output by a testing instrument, wherein the voltage frequency is different, and the others are the same;
detecting phase angle difference, and setting output by a testing instrument, wherein the voltage phase angles are different and the others are the same;
and if the action of the circuit breaker simulation device is the same as the expected action, judging that the circuit breaker in the tested feeder terminal equipment is qualified, otherwise, judging that the circuit breaker in the tested feeder terminal equipment is unqualified.
Compared with the prior art, the invention has the following beneficial effects:
1. the test system is provided with the feeder terminal equipment controller test device and the breaker simulation device, and utilizes the breaker simulation device to simulate the switch body of the breaker in the distribution automation feeder terminal equipment, so that the test system has the advantages of small volume, light weight, standard cabinet installation mode and the like; and the feeder terminal equipment controller testing device comprises an analog output module, an output module and a high-speed switching value input module, and can check whether the functions of remote measurement, remote signaling and remote control in the tested feeder terminal equipment controller are qualified or not so as to realize the automatic mixed test of the distribution automatic feeder terminal equipment.
2. For a power grid company, the test system can perform complete automatic test on a test item list of the distribution automation feeder terminal equipment, and can also perform industry data analysis and statistics on main modules (such as a telemetering data acquisition module, a remote signaling data acquisition module, a remote control node output module and the like) of the distribution automation feeder terminal equipment and perform quality data analysis and statistics on a module level of the distribution automation feeder terminal equipment of a manufacturer; in addition, the method can adapt to different automatic test application scenes of the distribution automatic feeder terminal equipment, such as production line detection of a distribution automatic feeder terminal equipment manufacturer, the class group level of a power grid company can carry out arrival inspection on the distribution automatic feeder terminal equipment, network-access online field test on the distribution automatic feeder terminal equipment and the like, and the functions and the performances of the distribution automatic feeder terminal complete equipment can be completely tested. Therefore, the power grid company can not only judge whether the product quality is qualified or not for the delivery inspection of the distribution automation feeder terminal equipment, but also track key information such as 'familial' defect, 'hereditary' defect, and 'short board' module of the product of equipment manufacturers; the equipment manufacturer detects the flow form of the module of the distribution automation feeder line terminal equipment on a production line, and controls the delivery quality of the distribution automation feeder line terminal equipment product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of an automated hybrid test system of a distribution automation feeder terminal device according to an embodiment of the present invention.
Fig. 2 is a block diagram of a power distribution automation feeder terminal device according to an embodiment of the present invention.
Fig. 3 is a test schematic diagram of an automated hybrid test system of a distribution automation feeder terminal device according to an embodiment of the present invention.
Fig. 4 is a flowchart of a communication protocol test according to an embodiment of the present invention.
Fig. 5 is a flowchart of a circuit breaker simulation device test according to an embodiment of the present invention.
The system comprises a feeder terminal equipment controller testing device 1, a feeder terminal equipment controller 101, an industrial personal computer 102, a switch 103, an analog output module 104, an output module 105, a high-speed switching value input module 106, a first power module 107, a first wireless communication module 108, a first expansion module 2, a circuit breaker analog device 3, a feeder terminal equipment controller 301, a main control embedded processor 302, a liquid crystal panel module 303, a telemetry data acquisition module 303, a remote communication data acquisition module 304, a remote control node output module 305, a second power supply 306, a second wireless communication module 307, a second expansion module 308, a 4-circuit breaker and a 5-voltage transformer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example (b):
as shown in fig. 1, the present embodiment provides an automated hybrid test system of a distribution automation feeder terminal device, which includes a feeder terminal device controller test apparatus 1 and a circuit breaker simulation apparatus 2.
The feeder terminal equipment controller testing device 1 carries out internal addressing and high-speed data exchange through 10/100BASE-TX and TCP/IP protocols, and comprises an industrial personal computer 101, a switch 102, an analog output module 103, an output module 104, a high-speed switching value input module 105 and a first power supply module 106, wherein the switch 102 is respectively connected with the industrial personal computer 101, the analog output module 103, the output module 104, the high-speed switching value input module 105, a breaker simulation device 2 and a tested feeder terminal equipment controller.
The industrial personal computer 101 comprises an Intel i5/i7 or peripheral configurations of a series of CPUs, a 16/32G memory, a 256G solid state disk, a 19-inch display, a keyboard, a mouse and the like, is provided with an RS-485 communication interface and an RS-232 communication interface, supports an IEC60870-5-101 communication protocol, and has a transmission rate of 600/1200/2400/4800/9.6k/19.2k/2048 kbit/s.
The switch 102 is an industrial-grade switch, which has two 10/100BASE-T ethernet interfaces supporting IEC60870-5-104 communication protocol, and the two ethernet interfaces are a first ethernet interface LAN1 and a second ethernet interface LAN2, respectively, where the first ethernet interface LAN1 is used for data communication between the feeder terminal equipment controller testing apparatus and the feeder terminal equipment controller, and the second ethernet interface LAN2 is used for data communication between the feeder terminal equipment controller testing apparatus and the power grid company provincial power distribution automation remote test management platform through the IEC60870-5-104 communication protocol.
The analog quantity output module 103 is configured to acquire data of the telemetry data acquisition module in the tested feeder terminal device controller, check whether the telemetry function in the tested feeder terminal device controller is qualified, analyze the data into telemetry data according to the message data acquired by the simulation master station, and analyze corresponding data according to the point table, where the data includes direct current values such as acquired voltage and current, active power, reactive power, power factors, feeder fault current, zero-sequence current or voltage, and battery voltage.
The output module 104 is configured to acquire data of a remote signaling data acquisition module in the tested feeder terminal device controller, check whether a remote signaling function in the tested feeder terminal device controller is qualified, analyze the data into remote signaling data according to message data acquired by the simulation master station, and analyze corresponding data including a switch position, a distance/a place, a protection action, fault information, and a power state according to a point table.
The high-speed switching value input module 105 is configured to acquire response data of the remote control node output module in the tested feeder terminal device controller about the tested feeder terminal device, check whether a remote control function in the tested feeder terminal device controller is qualified, send a remote control message according to the simulation master station, and check response indexes of the tested feeder terminal device, including correctness, success rate, retention time, and self-diagnosis function of remote control abnormality.
The power module 106 comprises 220V alternating current, an intelligent power unit and a storage battery, and is used for guaranteeing normal work of the feeder terminal equipment controller testing device 1 and the breaker simulation device 2, and the power module can still work for more than thirty minutes under the condition of 220V alternating current power failure.
In order to implement wireless communication of the feeder terminal equipment controller testing apparatus 1, the feeder terminal equipment controller testing apparatus 1 of the present embodiment further includes a first wireless communication module 107, and the first wireless communication module 107 is connected to the switch 102; further, the first wireless communication module 107 has a wireless communication SMA interface to realize smooth handover of three wireless communication networks of 4G/3G/2G, the first wireless communication module 107 adopts a mainstream industrial grade communication chip, the antenna gain is greater than 5.0dBi, the first wireless communication module has a dual-card dual-standby and hard encryption function, supports a national secret SM1/SM2/SM3 encryption algorithm and a national secret IPSEC specification, supports three wireless communication networks of 4G/3G/2G, preferably adopts a 4G wireless communication network, and selects a communication operator according to requirements of a power grid company.
In order to implement the function extension of the feeder terminal device controller testing apparatus 1, the feeder terminal device controller testing apparatus of this embodiment further includes a first extension module 108, and the first extension module 108 is connected to the switch 102.
The breaker simulation device 2 is used for simulating the function of a switch body of a breaker in the tested feeder terminal equipment; the circuit breaker can not only make-and-break normal load current, but also can make-and-bear short circuit current for a certain time, and can automatically trip under the action of the protection device to remove short circuit faults, but the circuit breaker in the feeder terminal equipment is installed on a cross arm, has large volume, heavy weight, complex installation and other adverse factors, is not suitable for remote signaling, remote measurement, remote control of a feeder terminal equipment controller, and arrival inspection test and module quality tracking of functions and performances, so the function of a switch body of the circuit breaker in the tested feeder terminal equipment is simulated by the circuit breaker simulation device 2; the circuit breaker simulation device 2 can be A circuit breaker simulation device of XJGM-3, KT300, ST-MNDLQ-A or the like, and the interface of the circuit breaker simulation device is provided with A four-core PT (voltage transformer, the power grid company may have differences in different regions, such as three-core and five-core), A six-core CT (current transformer), A ten-core control C aviation socket, and A socket on the three-phase power supply side and the three-phase load side.
In order to protect the feeder terminal equipment controller test apparatus 1 and the circuit breaker simulation apparatus 2, the feeder terminal equipment controller test apparatus 1 and the circuit breaker simulation apparatus 2 may be installed in a cabinet having length, width and height dimensions of 1600mm 610mm 670 mm.
Fig. 2 is a block diagram of a configuration of a distribution automation feeder terminal device, the device includes a feeder terminal device controller 3, a circuit breaker 4, a voltage transformer 5, a control cable, a support frame, and other accessories, spare parts, and special tools, and the feeder terminal device controller 3 includes a main control embedded processor 301, a liquid crystal panel module 302, a telemetry data acquisition module 303, a remote signaling data acquisition module 304, a remote control node output module 305, a second power supply 306, a second wireless communication module 307, and a second expansion module 308, and the telemetry data acquisition module 303, the remote signaling data acquisition module 304, the remote control node output module 305, the second power supply module 306, the second wireless communication module 307, and the second expansion module 308 are respectively connected to an analog output module 103, an output module 104, and a high-speed switching value input module 105 of a feeder terminal device controller testing apparatus 1, The first power module 106, the first wireless communication module 107 and the first expansion module 108 correspond to each other, and the telemetry data acquisition module 303, the remote signaling data acquisition module 304, the remote control node output module 305, the second power supply 306, the second wireless communication module 307 and the second expansion module 308 are accessed to the master control embedded processor 301 through a CAN bus; the liquid crystal panel module 302 is composed of a primary wiring diagram, a reclosing timing diagram, a device state, a setting fixed value, a report record, a local command and version information, and can inquire real-time remote signaling and remote measuring data, set the fixed value and switch on and off a function pressing plate; further, the master embedded processor 301 has an RS-485 communication interface, an RS-232 communication interface and an 10/100BASE-T ethernet interface LAN, and the second wireless communication module 307 has a wireless communication SMA interface, wherein the RS-485 communication interface and the RS-232 communication interface support IEC60870-5-101 communication protocol, the ethernet interface LAN supports IEC60870-5-104 communication protocol, and the wireless communication SMA interface supports a 4G/3G/2G wireless communication network, preferably a 4G wireless communication network; voltage transformer 5 is a four-core PT, circuit breaker 4 has a six-core CT and a ten-core control C aviation socket, the power side inlet wire and the load side inlet wire in the 10kV distribution lines are inserted respectively to circuit breaker 4's three-phase terminal, wherein CT (current transformer) inserts feeder terminal equipment controller 3 installed on the shaft tower through the CT cable, control and signal insert feeder terminal equipment controller 3 through control C cable, voltage transformer 5 inserts power side inlet wire and load side inlet wire in the 10kV distribution lines respectively, insert feeder terminal equipment controller 3 through the PT cable.
The voltage transformer and the current transformer in the circuit breaker are analog quantity sampling and measuring devices of a 10kV distribution line, voltage and current in a power supply side inlet wire and a load side inlet wire are measured, a feeder terminal device controller 3 calculates three-phase voltage, three-phase current, zero-sequence voltage, apparent power (active power and reactive power), power factors, frequency and the like, the condition of the 10kV distribution line is judged according to conditions and threshold values, and corresponding specified actions are executed by a switch body in the circuit breaker when various faults occur. Therefore, the switch body in the circuit breaker is a key component for testing the distribution automation feeder terminal equipment, by integrating the switch body in the circuit breaker into the feeder terminal equipment controller testing device 1 in a way of simulating by using the circuit breaker simulating device 2, the functions and the performances of the distribution automation feeder terminal equipment can be completely tested, and through the mode of local automatic generation of test cases or downloading from a distribution automation remote test management platform, thereby realizing the automatic test process of the test item list of the distribution automation feeder terminal equipment and improving the test efficiency, because the circuit breaker simulator 2 simulates the action of the switch body in the circuit breaker, the switching operation and the time delay can be monitored in real time in the test process, so that the test method is a hybrid test method, the measurement principle is shown in figure 3, and a six-phase voltage current source is connected into a circuit breaker simulation device 2 of an automatic hybrid test system through a power supply side incoming line and a load side outgoing line.
The embodiment also provides an automatic hybrid test method for the distribution automation feeder terminal equipment, which comprises a communication protocol test and a breaker simulation device test.
As shown in fig. 4, the communication protocol test includes the following steps:
and S1, realizing configuration and establishing an analog master station.
And S2, connecting the feeder terminal equipment to be tested.
S3, under the normal condition of communication, the following operations are executed:
s31, in the reset/restart abnormal signal detection process, manually resetting/restarting the detected feeder line terminal equipment, receiving the remote signaling data and the remote measuring data of the detected feeder line terminal equipment, analyzing the remote signaling data and the remote measuring data, if the analyzed remote signaling data and the analyzed remote measuring data are consistent with the expected values, judging that the remote signaling data and the remote measuring data are normal, namely qualified, otherwise, judging that the remote signaling data and the remote measuring data are abnormal, namely unqualified.
S32, in the 104 link disconnection reconnection process, if reconnection is carried out within a specified time, receiving remote signaling data and remote measuring data of the tested feeder line terminal equipment, analyzing the remote signaling data and the remote measuring data, if the analyzed remote signaling data and the analyzed remote measuring data are consistent with an expected value, judging that the remote signaling data and the remote measuring data are normal, namely qualified, otherwise, judging that the remote signaling data and the remote measuring data are abnormal, namely unqualified.
And S33, receiving the telecommand data of the tested feeder line terminal equipment in the telecommand test process, judging that the telecommand function of the tested feeder line terminal equipment is qualified if the state and time of the telecommand are correct, and otherwise, judging that the telecommand function of the tested feeder line terminal equipment is unqualified.
And S34, filling in a remote control address bit and a state in a remote control test flow, if the state of the tested feeder line terminal equipment is consistent with the filled remote control state, judging that the remote control function of the tested feeder line terminal equipment is qualified, and otherwise, judging that the remote control function of the tested feeder line terminal equipment is unqualified.
And S35, in the telemetry test process, filling in a telemetry address bit and a state, if the state of the tested feeder terminal equipment is consistent with the filled telemetry state, judging that the telemetry function of the tested feeder terminal equipment is qualified, otherwise, judging that the telemetry function of the tested feeder terminal equipment is unqualified.
As shown in fig. 5, the circuit breaker simulation device test includes the following steps:
and S1, judging whether the test instrument can be connected, if so, entering the step S2, and if not, ending the test.
And S2, judging whether the simulation master station can be connected with the feeder terminal equipment to be tested, if so, entering the step S3, and if not, ending the test.
S3, under the condition that the test instrument can be connected and the simulation master station can be connected with the feeder terminal equipment to be tested, the following operations are executed:
and S31, detecting the voltage/voltage difference, and setting output by the testing instrument, wherein the voltage amplitude is different, and the others are the same.
And S32, detecting the frequency difference, and setting output by the testing instrument, wherein the voltage frequency is different, and the others are the same.
And S33, detecting phase angle difference, and setting output by a testing instrument, wherein the voltage phase angles are different, and the others are the same.
And S34, if the action of the circuit breaker simulation device is the same as the expected action, judging that the circuit breaker in the tested feeder terminal equipment is qualified, otherwise, judging that the circuit breaker in the tested feeder terminal equipment is unqualified.
The above steps S31 to S33 are performed simultaneously.
In summary, the test system of the invention is provided with the feeder terminal equipment controller test device and the breaker simulation device, and utilizes the breaker simulation device to simulate the switch body of the breaker in the distribution automation feeder terminal equipment, so as to achieve the advantages of small volume, light weight, standard cabinet installation mode and the like, and the automatic test flow of the distribution automation feeder terminal equipment test item list is realized by the way of local automatic generation of test cases or downloading from a distribution automation remote test management platform, thereby improving the test efficiency and realizing closed-loop management; and the feeder terminal equipment controller testing device comprises an analog output module, an output module and a high-speed switching value input module, and can check whether the functions of remote measurement, remote signaling and remote control in the tested feeder terminal equipment controller are qualified or not so as to realize the automatic mixed test of the distribution automatic feeder terminal equipment.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the scope of the present invention.

Claims (10)

1. An automatic hybrid test system of distribution automation feeder terminal equipment is characterized by comprising a feeder terminal equipment controller test device and a breaker simulation device, wherein the feeder terminal equipment controller test device comprises an industrial personal computer, an exchanger, an analog output module, an output module and a high-speed switching value input module;
the analog quantity output module is used for acquiring data of the telemetering data acquisition module in the tested feeder terminal equipment controller, checking whether the telemetering function in the tested feeder terminal equipment controller is qualified or not, analyzing the data into telemetering data according to message data acquired by the simulation master station, and analyzing corresponding data according to the point table;
the output quantity output module is used for acquiring data of a remote signaling data acquisition module in the tested feeder terminal equipment controller, checking whether a remote signaling function in the tested feeder terminal equipment controller is qualified or not, analyzing the data into remote signaling data according to message data acquired by the simulation master station, and analyzing corresponding data according to the point table;
the high-speed switching value input module is used for acquiring response data of the remote control node output module in the tested feeder terminal equipment controller about the tested feeder terminal equipment, checking whether a remote control function in the tested feeder terminal equipment controller is qualified or not, sending a remote control message according to the simulation master station, and checking a response index of the tested feeder terminal equipment;
the circuit breaker simulation device is used for simulating the function of a switch body of a circuit breaker in the tested feeder terminal equipment.
2. The automated hybrid test system of claim 1, wherein the industrial personal computer has one RS-485 communication interface and one RS-232 communication interface.
3. The automated hybrid test system of claim 1, wherein the switch has two ethernet interfaces, one of the ethernet interfaces for data communication between the feeder terminal equipment controller test equipment and the feeder terminal equipment controller and the other ethernet interface for data communication between the feeder terminal equipment controller test equipment and the distribution automation remote test management platform.
4. The automated hybrid test system of claim 1, wherein the circuit breaker emulation device has one voltage transformer, one current transformer, one aviation outlet, and a three phase mains and three phase load side outlet.
5. The automated hybrid test system of any one of claims 1-4, wherein the feeder terminal equipment controller test device further comprises a wireless communication module, the wireless communication module connected to the switch.
6. The automated hybrid test system of claim 5, wherein the wireless communication module has a wireless communication SMA interface to enable switching among a plurality of wireless communication networks.
7. The automated hybrid test system of any one of claims 1 to 4, wherein the feeder terminal equipment controller test apparatus further comprises an extension module, the extension module being connected to the switch for functional extension of the feeder terminal equipment controller test apparatus.
8. An automated hybrid testing system according to any of claims 1-4, wherein the feeder terminal equipment controller testing means and the circuit breaker simulation means are disposed within a cabinet.
9. An automatic hybrid test method for distribution automation feeder terminal equipment is characterized by comprising a communication protocol test and a breaker simulation device test;
the communication protocol test comprises the following steps:
the method comprises the following steps of realizing configuration and establishing of an analog master station, connecting the tested feeder terminal equipment, and executing the following operations under the normal communication condition:
in the reset/restart abnormal signal detection process, resetting/restarting the tested feeder line terminal equipment, receiving remote signaling data and remote measuring data of the tested feeder line terminal equipment, analyzing the remote signaling data and the remote measuring data, judging that the remote signaling data and the remote measuring data are qualified if the analyzed remote signaling data and the remote measuring data are consistent with an expected value, and otherwise, judging that the remote signaling data and the remote measuring data are unqualified;
in a 104 link disconnection reconnection process, if reconnection is carried out within a specified time, receiving remote signaling data and remote measuring data of a tested feeder terminal device, analyzing the remote signaling data and the remote measuring data, if the analyzed remote signaling data and the analyzed remote measuring data are consistent with an expected value, judging that the remote signaling data and the remote measuring data are qualified, and if not, judging that the remote signaling data and the remote measuring data are unqualified;
in the remote signaling test process, receiving remote signaling data of the tested feeder line terminal equipment, if the state and time of remote signaling are correct, judging that the remote signaling function of the tested feeder line terminal equipment is qualified, otherwise, judging that the remote signaling function of the tested feeder line terminal equipment is unqualified;
filling in a remote control address bit and a remote control state in a remote control test flow, if the state of the tested feeder line terminal equipment is consistent with the filled remote control state, judging that the remote control function of the tested feeder line terminal equipment is qualified, otherwise, judging that the remote control function of the tested feeder line terminal equipment is unqualified;
and in the remote measuring test process, filling in a remote measuring address bit and a state, if the state of the tested feeder line terminal equipment is consistent with the filled remote measuring state, judging that the remote measuring function of the tested feeder line terminal equipment is qualified, and otherwise, judging that the remote measuring function of the tested feeder line terminal equipment is unqualified.
10. The automated hybrid testing method of claim 9, wherein the breaker simulator test comprises:
under the condition that the test instrument can be connected and the simulation main station can be connected with the feeder terminal equipment to be tested, the following operations are carried out:
detecting voltage/voltage difference, and setting output by a testing instrument, wherein the voltage amplitudes are different and the others are the same;
detecting frequency difference, and setting output by a testing instrument, wherein the voltage frequency is different, and the others are the same;
detecting phase angle difference, and setting output by a testing instrument, wherein the voltage phase angles are different and the others are the same;
and if the action of the circuit breaker simulation device is the same as the expected action, judging that the circuit breaker in the tested feeder terminal equipment is qualified, otherwise, judging that the circuit breaker in the tested feeder terminal equipment is unqualified.
CN201911085496.6A 2019-11-08 2019-11-08 Automatic hybrid test system and method for distribution automation feeder terminal equipment Pending CN110927482A (en)

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