CN102998571B - A kind of RTDS test method of fault current limiter device - Google Patents
A kind of RTDS test method of fault current limiter device Download PDFInfo
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Abstract
The RTDS test method of a kind of fault current limiter device, belongs to emergency protection circuit device for electric field。It is sent RTDS analog signals by RTDS testing equipment, for simulating the fault-signal in actual moving process；RTDS analog signals exports to the measurement system of FCL Control protection system after power amplifier；The AD D/A converter module that measurement system is delivered in measurement system after the analog signals of input is carried out signal condition, the result after AD digital-to-analogue conversion is delivered to FCL Control protection system by optical fiber after packing；In RTDS real-time simulation test, employing I/O interface realizes the mutual of the logical signal between FCL Control protection system and RTDS testing equipment。Can be widely used for FCL control protective unit control and protect the fields such as the design of strategy, inspection。
Description
Technical field
The invention belongs to emergency protection circuit device for electric field, particularly relate to a kind of test method for fault current limiter。
Background technology
Along with developing rapidly of social economy and electric utility, the short circuit current level in power system electrical network at different levels is also continuously increased。In system, the short circuit current of some areas has met or exceeded the rupturing capacity of chopper, and also has the trend continuing to rise。The serious threat of this situation is to the safe operation of system, once the burning of the fault that is short-circuited is likely to cause in faulty line relevant device, consequence is hardly imaginable。
In order to remain stable for transmission of electricity, rapid cut-off error protection is very important。General mechanical chopper cuts off short circuit current needs two or more cycles, and including the movement time of relay protection, and the fast current restriction device used together with chopper can shorten fault protection time。
Existing fault current limiter (FaultCurrentLimiter, FCL) is main can be adopted the switch such as types such as IGCT, spark gap, Fast mechanical switch or its combination by reactor L, capacitor C and Quick side way switch K() form。Wherein, the power frequency induction reactance of reactor L and the capacitive reactance size of capacitor C are identical。Under normal running conditions, switch K is in open mode (being in blocking state corresponding to IGCT), electric capacity C and inductance L and is in power frequency series resonance state, and total impedance is zero。After fault being detected, switch K rapid closing (corresponding to IGCT fast conducting), electric capacity is bypassed, and is equivalent to access inductance L in the line thus playing metering function。
For guaranteeing that the correctness of strategy, stability are protected in FCL control protective unit control; guarantee that the success of FCL control protective unit puts into operation; it is accomplished by fault current limiter control protective unit is carried out dynamic analog test, namely strategy is protected in the control of FCL control protective unit and carry out verification experimental verification。
RTDS(RealTimeDigitalSimulator, real-time digital simulator), it is develop in the world and put into commercial applications digital real-time emulation device the earliest, is also employ up in the world at present, the power system real-time simulation device being the most widely used。
Real-time digital simulator RTDS is made up of hardware devices (RACK) such as software for calculation (RSCAD), computing and interfaces, including supporting work station or microcomputer, it is possible to simulate electro-magnetic transient and the electromechanical transient phenomenon of power system continuously and in real time。
Being able to maintain that due to RTDS the operation continuously under real-time conditions, actual control protection equipment are connected to RTDS and carry out closed test to analyze and to study the performance controlling protection equipment, RTDS can also the large-scale AC/DC mixed power system of real-time simulation simultaneously。
Publication date is on August 31st, 2011, and publication number is in the Chinese invention patent application of CN102170116A, discloses one " real time data display of fault current limiter ", and it includes controllable serial capacitor and compensates assembly；The the first series capacitor compensation assembly being connected with described thyristor controlled series capacitor assembly；The the second series capacitor compensation assembly being all connected with described thyristor controlled series capacitor assembly and described first series capacitor compensation assembly；All be connected the 3rd series capacitor compensation assembly with described thyristor controlled series capacitor assembly, described first series capacitor compensation assembly and described second series capacitor compensation assembly。But it merely discloses a kind of controllable serial capacitor and compensates the simulation modeling of assembly; it is applicable for use with computer and controllable serial capacitor is compensated the simulation modeling of assembly; cannot be used for whole fault current limiter control protective unit is carried out dynamic analog test, and control guarantor's strategy of FCL control protective unit is carried out verification experimental verification。
Summary of the invention
The technical problem to be solved is to provide the RTDS test method of a kind of fault current limiter device; by RTDS test, it may determine that, verify that the control & protection strategy identity of FCL control protective unit is correct; the performance indications of test FCL control protective unit bottom application software; controlling relay protective scheme and control the correctness of protection exit, finally putting into operation for the success of fault current limiter device provides technical guarantee。
The technical scheme is that the RTDS test method that a kind of fault current limiter device is provided, it is characterized in that: set up a set of RTDS real-time simulation pilot system including RTDS testing equipment, power amplifier, oscillograph, digimer and FCL control protective unit；Described FCL control protective unit includes data summarization unit, protected location, TFR unit, On-off signal unit, GPS unit, industrial control computer and analogue measurement case；The RTDS analog signals after digital-to-analogue conversion is sent, for simulating the fault-signal in actual moving process by RTDS testing equipment；Described RTDS analog signals exports to the measurement system of FCL Control protection system after power amplifier；The AD D/A converter module that described measurement system is delivered in measurement system after the analog signals of input is carried out signal condition, the result after AD digital-to-analogue conversion is delivered to FCL Control protection system by optical fiber after packing；In RTDS real-time simulation test, employing I/O interface realizes the mutual of the logical signal between FCL Control protection system and RTDS testing equipment。
Further, the external TFR transient state wave recording device of described FCL Control protection system, for recording each electric parameters of system transient modelling process, in order to be analyzed afterwards。
Further, utilize the failure wave-recording function that described RTDS testing equipment carries, the comparison with the record ripple result of the external TFR transient state wave recording device of FCL Control protection system carries out synchronization current/voltage/on off state parameter, mutually it is verified。
Described RTDS real-time simulation pilot system carries out " capacitor super-load alarm " protection test of FCL Control protection system according to the following step:
4-1, run RTDS model to rated condition；
4-2, input FCL Control protection system, confirm that Capacitor banks is not heavily thrown；
4-3, confirmation capacitor super-load protection put into；
4-4, confirmation capacitor super-load alarm definite value are set to 1.1In；Alarm time delay 10s；
4-5, being configured on the runtime file of RTDS, adjusting current value in capacitor is In rated current；
4-6, being configured on the runtime file of RTDS, adjusting current value in capacitor is 1.1In rated current；
4-7, confirmation FCL Control protection system send capacitor super-load alarm。
Described RTDS real-time simulation pilot system carries out " capacitor super-load alarm " protection test under " electric capacity thinks highly of throwing pattern " pattern of FCL Control protection system according to the following step:
5-1, run RTDS model to rated condition；
5-2, input FCL Control protection system, confirm that Capacitor banks heavily throws pattern；
5-3, confirmation capacitor super-load protection put into；
5-4, confirm that temporary transient locking delay time is 2 minutes；
It is 3 times that number of times is heavily thrown in 5-5, confirmation；
5-6, being configured on the runtime file of RTDS, adjusting current value in capacitor is In rated current；
5-7, being configured on the runtime file of RTDS, adjusting current value in capacitor is 1.8In rated current；
5-8, confirmation FCL Control protection system send the combined floodgate order of bypass breaker three-phase, the temporary transient locking of FCL Control protection system；
5-9, confirmation FCL Control protection system are heavily thrown；
5-10, repetition 5-6 step 3 time, confirm that FCL Control protection system is after capacitor super-load protection act is laid equal stress on and thrown three times, confirms that FCL Control protection system sends the combined floodgate order of bypass breaker three-phase, transfers Permanent lockout to。
Described RTDS real-time simulation pilot system carries out " capacitor super-load alarm " protection test under " capacitor is not heavily thrown " pattern of FCL Control protection system according to the following step:
6-1, run RTDS model to rated condition；
6-2, input FCL Control protection system, confirm that Capacitor banks heavily throws pattern；
6-3, confirmation capacitor super-load protection put into；
6-4, confirm that temporary transient locking delay time is 2min；
It is 3 times that number of times is heavily thrown in 6-5, confirmation；
6-6, being configured on the runtime file of RTDS, adjusting current value in capacitor is In rated current；
6-7, being configured on the runtime file of RTDS, adjusting current value in capacitor is 1.8In rated current；
6-8, confirmation FCL Control protection system send the combined floodgate order of bypass breaker three-phase, FCL Control protection system Permanent lockout。
Wherein, above-mentioned In is the rated operational current of capacitor。
Compared with the prior art, the invention have the advantage that
1. make full use of the technical advantage of RTDS, the checking that Computer real time simulation protects strategy with FCL control protective unit control is combined, speed control can be added and protect design and the debugging efforts of strategy；
2. adopt RTDS test can test the performance indications of FCL control protective unit bottom application software, control relay protective scheme and control the correctness of protection exit, put into operation the technical guarantee of offer for the success of fault current limiter device；
3. adopt RTDS and TFR transient state wave recording device dual logging mode, contribute to the mutual confirmation of record result, it is simple to the lookup of failure problems, it is ensured that the reliability of record result, contribute to the reproduction of phenomenon of the failure and the eliminating of producing cause。
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of RTDS real-time simulation pilot system of the present invention；
Fig. 2 is the process blocks schematic diagram of the present invention " capacitor super-load alarm " protection test；
Fig. 3 is present invention process blocks schematic diagram of " capacitor super-load alarm " protection test under " electric capacity thinks highly of throwing pattern " pattern；
Fig. 4 is present invention process blocks schematic diagram of " capacitor super-load alarm " protection test under " capacitor is not heavily thrown " pattern。
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described。
In Fig. 1; technical scheme provides the RTDS test method of a kind of fault current limiter device, it is characterized in that setting up a set of RTDS real-time simulation pilot system including RTDS testing equipment, power amplifier, oscillograph, digimer and FCL control protective unit；Described FCL control protective unit includes data summarization unit, protected location, TFR unit, On-off signal unit, GPS unit, industrial control computer and analogue measurement case。
When testing, RTDS testing equipment send the RTDS analog signals after digital-to-analogue conversion, for simulating the fault-signal in actual moving process；Described RTDS analog signals exports to the measurement system of FCL Control protection system after power amplifier；The AD D/A converter module that described measurement system is delivered in measurement system after the analog signals of input is carried out signal condition, the result after AD digital-to-analogue conversion is delivered to FCL Control protection system by optical fiber after packing；In RTDS real-time simulation test, employing I/O interface realizes the mutual of the logical signal between FCL Control protection system and RTDS testing equipment。
Further, the external TFR transient state wave recording device of described FCL Control protection system, for recording each electric parameters of system transient modelling process, in order to be analyzed afterwards。
Further, utilize the failure wave-recording function that described RTDS testing equipment carries, the comparison with the record ripple result of the external TFR transient state wave recording device of FCL Control protection system carries out synchronization current/voltage/on off state parameter, mutually it is verified。
Development along with power technology, the protective relaying device structure of power system, principle is different, when breaking down under the specific method of operation, traditional steady-state analysis method is limited to, and RTDS real-time emulation system has COMTRADE formatted file (ieee standard electrical power system transient data interchange general format) playback and carries out the function of electric network fault reproduction, in addition, RTDS also has the defeated people of analog quantity, output card, the defeated people of switching value, output card, it is available for RTDS by these interface boards and external physical equipment connects, realize controlling equipment and the closed loop test of protection device。
COMTRADE is ieee standard electrical power system transient data interchange general format。A kind of form of this standard is power system or electric power system model collects transient-wave and the document definition of casualty data。This form is intended to the data interchange general format providing a kind of ease of explanation。IEEE proposed in 1991, and had carried out revision and perfect in 1999。Each COMTRADE record has one group of maximum 4 relative file, and each in 4 files has a different message level。
4 files are as follows: a) heading file b) configuration file c) data file d) message file。
1.1 heading files (xxxxxxxx.HDR)
Heading file is a kind of optional ASCII text file set up by the author of COMTRADE data, and the founder of heading file can create any information with the order of any needs。The form of heading file is ASCII。
1.2 configuration files (xxxxxxxx.CFG)
Configuration file is a kind of ASCII text file, for the form of data (.DAT) file is correctly described, it is therefore necessary to preserve with a kind of concrete form。This document has annotated the comprised information of data (.DAT) file, including items such as such as sampling rate, number of channels, frequency, channel informations。A field identification file in configuration file the first row according to time (such as 1991,1999 etc.) of COMTRADE Standard Edition。If this field is absent from or sky, it assumes that file is then in accordance with the initial issue date (1991) of standard。It is with ASCII fromat or the field stored in a binary format that configuration file also comprises the adjoint data file of identification。
1.3 data files (xxxxxxxx.DAT)
Data file comprises the value of all input channels of each sampling in record。Data file comprises a serial number and the time tag of sampling every time。Except these sampled values simulate, except record, the data inputted, also recording status, namely represent the input of ON/OFF signal。
1.4 message files (xxxxxxxx.INF)
Message file is that a kind of document creation person wishes so as to the special information outside the useful information of user。Message file is optional file。The All Files of COMTRADE definition, has all annotated in ieee standard electrical power system transient data interchange general format StdC37.111-1991 or IEEEStdC37.111-1999 version。
RTDS real-time emulation system has advantage as above just so that the checking that Computer real time simulation protects strategy with FCL control protective unit control can be conveniently carried out。
Owing to FCL control protective unit control is protected tactful numerous, now only select several narration, those skilled in the art, after having grasped the thinking of the problem of this invention address that, technique effect and the goal of the invention of the present invention without performing creative labour, can be reproduced completely。
In Fig. 2, RTDS real-time simulation pilot system carries out " capacitor super-load alarm " protection test of FCL Control protection system according to the following step:
4-1, run RTDS model to rated condition；
4-2, input FCL Control protection system, confirm that Capacitor banks is not heavily thrown；
4-3, confirmation capacitor super-load protection put into；
4-4, confirmation capacitor super-load alarm definite value are set to 1.1In；Alarm time delay 10s；
4-5, being configured on the runtime file of RTDS, adjusting current value in capacitor is In rated current；
4-6, being configured on the runtime file of RTDS, adjusting current value in capacitor is 1.1In rated current；
4-7, confirmation FCL Control protection system send capacitor super-load alarm。
In Fig. 3, RTDS real-time simulation pilot system carries out " capacitor super-load alarm " protection test under " electric capacity thinks highly of throwing pattern " pattern of FCL Control protection system according to the following step:
5-1, run RTDS model to rated condition；
5-2, input FCL Control protection system, confirm that Capacitor banks heavily throws pattern；
5-3, confirmation capacitor super-load protection put into；
5-4, confirm that temporary transient locking delay time is 2 minutes；
It is 3 times that number of times is heavily thrown in 5-5, confirmation；
5-6, being configured on the runtime file of RTDS, adjusting current value in capacitor is In rated current；
5-7, being configured on the runtime file of RTDS, adjusting current value in capacitor is 1.8In rated current；
5-8, confirmation FCL Control protection system send the combined floodgate order of bypass breaker three-phase, the temporary transient locking of FCL Control protection system；
5-9, confirmation FCL Control protection system are heavily thrown；
5-10, repetition 5-7 step 3 time, confirm that FCL Control protection system is after capacitor super-load protection act is laid equal stress on and thrown three times, confirms that FCL Control protection system sends the combined floodgate order of bypass breaker three-phase, transfers Permanent lockout to。
In Fig. 4, RTDS real-time simulation pilot system carries out " capacitor super-load alarm " protection test under " capacitor is not heavily thrown " pattern of FCL Control protection system according to the following step:
6-1, run RTDS model to rated condition；
6-2, input FCL Control protection system, confirm that Capacitor banks heavily throws pattern；
6-3, confirmation capacitor super-load protection put into；
6-4, confirm that temporary transient locking delay time is 2min；
It is 3 times that number of times is heavily thrown in 6-5, confirmation；
6-6, being configured on the runtime file of RTDS, adjusting current value in capacitor is In rated current；
6-7, being configured on the runtime file of RTDS, adjusting current value in capacitor is 1.8In rated current；
6-8, confirmation FCL Control protection system send the combined floodgate order of bypass breaker three-phase, FCL Control protection system Permanent lockout。
Owing to device name involved in above-mentioned each test, action term and meaning of parameters are the working standard of this area, therefore its concrete meaning and technology contents no longer describe at this。
By above test method it can be seen that RTDS real-time simulation pilot system can realize real-time verification and the amendment of the control & protection strategy to FCL control protective unit completely。Simultaneously, it is possible to test FCL control protective unit realized control relay protective scheme and control protection exit action modeling correctly reliable, sensitive rapidly。
The present invention makes full use of the technical advantage of RTDS, the checking that Computer real time simulation protects strategy with FCL control protective unit control is combined, and can add speed control and protect design and the debugging efforts of strategy；And adopt RTDS test can test the performance indications of FCL control protective unit bottom application software, control relay protective scheme and control the correctness of protection exit, putting into operation the technical guarantee of offer for the success of fault current limiter device；In addition, the technical program adopts RTDS and TFR transient state wave recording device dual logging mode, contribute to the mutual confirmation of record result, it is easy to the lookup of failure problems, ensure the reliability of record result, contributing to the reproduction of phenomenon of the failure and the eliminating of producing cause, finally putting into operation for the success of fault current limiter device provides technical guarantee。
The method can be widely used in FCL control protective unit control and protect the fields such as the design of strategy, inspection。
Claims (1)
1. a RTDS test method for FCL control protective unit, is characterized in that:
Set up a set of RTDS real-time simulation pilot system including RTDS testing equipment, power amplifier, oscillograph, digimer and FCL control protective unit；
Described FCL control protective unit includes data summarization unit, protected location, TFR unit, On-off signal unit, GPS unit, industrial control computer and analogue measurement case；
The RTDS analog signals after digital-to-analogue conversion is sent, for simulating the fault-signal in actual moving process by RTDS testing equipment；
Described RTDS analog signals exports to the measurement system of FCL control protective unit after power amplifier；
The AD D/A converter module that described measurement system is delivered in measurement system after the analog signals of input is carried out signal condition, the result after AD digital-to-analogue conversion is delivered to FCL control protective unit by optical fiber after packing；
In RTDS real-time simulation test, employing I/O interface realizes the mutual of the logical signal between FCL control protective unit and RTDS testing equipment；
The external TFR transient state wave recording device of described FCL control protective unit, for recording each electric parameters of system transient modelling process, in order to be analyzed afterwards；
Utilize the failure wave-recording function that described RTDS testing equipment carries, the comparison with the record ripple result of the external TFR transient state wave recording device of FCL control protective unit carries out synchronization electric current, voltage and on off state parameter, mutually it is verified。
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| CN103235218B (en) * | 2013-04-16 | 2015-03-25 | 国家电网公司 | RTDS-based (real-time digital simulator) arc protector function test platform |
| CN104133133B (en) * | 2014-07-22 | 2017-03-29 | 国家电网公司 | A kind of reaying protection test room standardized test system |
| CN106503287B (en) * | 2016-09-18 | 2019-09-27 | 昆明理工大学 | A kind of transient range unit detection method based on real-time digital simulator |
| CN110672945A (en) * | 2019-09-28 | 2020-01-10 | 上海电力大学 | Line protection automatic test system based on real-time digital simulation system |
| CN111913843A (en) * | 2020-07-10 | 2020-11-10 | 西安西电电力***有限公司 | Power electronic equipment simulation test interface device |
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| CN102170116A (en) * | 2010-02-26 | 2011-08-31 | 华东电力试验研究院有限公司 | Real-time digital simulation system of fault current limiter |
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