CN102998571A - Real time digital simulator (RTDS) testing method of fault current limiter - Google Patents
Real time digital simulator (RTDS) testing method of fault current limiter Download PDFInfo
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Abstract
A real time digital simulator (RTDS) testing method of a fault current limiter belongs to the field of emergency protecting circuit devices. RTDS analog quantity signals are sent by an RTDS testing device and used for simulating fault signals in an actual operation process. The RTDS analog quantity signals pass through a power amplifier to be output to a measuring system of a fault current limiter (FCL) control protecting system. The measuring system conducts signal processing on the input analog quantity signals and sends the analog quantity signals to an analog-to-digital (AD) conversion module in the measuring system, and results obtained after AD conversion are packaged and transmitted to the FCL control protecting system through optical fiber. Interacting of logic signals between the FCL control protecting system and the RTDS testing device is achieved through an input/output (I/O) port in an RTDS real time simulation test. The RTDS testing method of the fault current limiter can be widely applied to the fields of designing and testing and the like of a control and protecting strategy of the FCL control protecting device.
Description
Technical field
The invention belongs to the emergency protection circuit device for electric field, relate in particular 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 the electric system electrical networks at different levels also constantly increases.The short-circuit current of some areas has has met or exceeded the rupturing capacity of isolating switch in the system, and also has the trend that continues rising.The serious threat of this situation is to security of system operation, in case the fault that is short-circuited causes burning of relevant device in the faulty line possibly, consequence is hardly imaginable.
In order to keep stable transmission of electricity, the rapid cut-off emergency protection is very important.General mechanical chopper cutting-off of short-circuit electric current needs two or more cycles, comprises the actuation time of relay protection, and can shorten the emergency protection time with the fast current restraint device that isolating switch uses.
Existing fault current limiter (Fault Current Limiter, FCL) mainly can adopt switch or its combination such as types such as thyristor, sparking distance, Quick mechanical switches by reactor L, capacitor C and Quick side way switch K() form.Wherein, the power frequency induction reactance of reactor L is identical with the capacitive reactance size of capacitor C.Under the normal running conditions, K switch is in open mode (being in blocking state corresponding to thyristor), and capacitor C and inductance L are in the power frequency series resonance state, and total impedance is zero.After detecting fault, K switch rapid closing (corresponding to the thyristor fast conducting), electric capacity is bypassed, and plays metering function thereby be equivalent to access in the line inductance L.
Protect correctness, the stability of strategy for guaranteeing the control of FCL control protective unit; the success of guaranteeing the FCL control protective unit puts into operation; just need to carry out dynamic analog test to the fault current limiter control protective unit, namely strategy be protected in the control of FCL control protective unit and carried out verification experimental verification.
RTDS(Real Time Digital Simulator, the real-timedigital simulation instrument), being to develop in the world and drop into commercial applications digital real-time emulation device the earliest, also is to use in the world at present at most, by the power system real-time simulation device of extensive employing.
Real-timedigital simulation instrument RTDS is comprised of hardware devices (RACK) such as software for calculation (RSCAD), computing and interfaces, comprises supporting workstation or microcomputer, can be continuously and simulate in real time electro-magnetic transient and the electromechanical transient phenomenon of electric system.
Because RTDS can keep the continuous operation under the real-time conditions; actual control protection equipment just can be connected to RTDS and carry out closed test to analyze and to study the performance of control protection equipment, and RTDS also can the large-scale AC/DC mixed power system of real-time simulation simultaneously.
Open day is on August 31st, 2011, and publication number is in the Chinese invention patent application of CN 102170116A, discloses a kind of " the real-timedigital simulation system of fault current limiter ", and it comprises the controllable serial capacitor compensation assembly; The the first series capacitor compensation assembly that links to each other with described thyristor controlled series capacitor assembly; The the second series capacitor compensation assembly that all links to each other with described thyristor controlled series capacitor assembly and described the first series capacitor compensation assembly; With described thyristor controlled series capacitor assembly, described the first series capacitor compensation assembly and described the second series capacitor compensation assembly the 3rd series capacitor compensation assembly that all links to each other.But it just discloses a kind of simulation modeling of controllable serial capacitor compensation assembly; be applicable to adopt computing machine to the simulation modeling of controllable serial capacitor compensation assembly; can not be used for whole fault current limiter control protective unit is carried out dynamic analog test, and strategy be protected in the control of FCL control protective unit carried out verification experimental verification.
Summary of the invention
Technical matters to be solved by this invention provides a kind of RTDS test method of fault current limiter device; it can determine, verifies that by the RTDS test control ﹠ protection strategy identity of FCL control protective unit is correct; the performance index of test FCL control protective unit bottom application software; the correctness of logic and control protection outlet is protected in control, and final success for fault current limiter device puts into operation technical guarantee is provided.
Technical scheme of the present invention is: a kind of RTDS test method of fault current limiter device is provided, it is characterized in that: set up the RTDS real-time simulation pilot system that a cover comprises RTDS testing equipment, power amplifier, oscillograph, digimer and FCL control protective unit; Described FCL control protective unit comprises data summarization unit, protected location, TFR unit, switching value input block, GPS unit, industrial control computer and analogue measurement case; Sent through the RTDS analog signals after number-mould conversion by the RTDS testing equipment, be used for the fault-signal of simulation actual moving process; Described RTDS analog signals is through exporting to the measuring system of FCL control protection system behind the power amplifier; Described measuring system carries out delivering to behind the signal condition AD D/A converter module in the measuring system to the analog signals of input, and the result after the AD digital-to-analog conversion is delivered to FCL control protection system by optical fiber transmission after through packing; Adopt the mutual of logical signal between I/O Interface realization FCL control protection system and the RTDS testing equipment in the RTDS real-time simulation test.
Further, the external TFR transient state of described FCL control protection system wave recording device is for each electric parameters of register system transient state process, in order to analyze afterwards.
Further, the failure wave-recording function of utilizing described RTDS testing equipment to carry, the record ripple result who controls the external TFR transient state of protection system wave recording device with FCL carries out comparing of synchronization current/voltage/on off state parameter, mutually verifies.
Described RTDS real-time simulation pilot system is carried out " capacitor super-load alarm " protection test of FCL control protection system according to the following step:
4-1, operation RTDS model are to rated condition;
4-2, input FCL control protection system are confirmed the heavily throwing of capacitor group;
4-3, the protection of affirmation capacitor super-load drop into;
4-4, affirmation capacitor super-load alarm definite value are set to 1.1In; Alarm time-delay 10s;
4-5, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
4-6, arrange at the runtime of RTDS file, adjust that current value is the 1.1In rated current in the capacitor;
4-7, affirmation FCL control protection system are sent the capacitor super-load alarm.
Described RTDS real-time simulation pilot system is carried out " capacitor super-load alarm " protection test under " electric capacity is thought highly of the throwing pattern " pattern of FCL control protection system according to the following step:
5-1, operation RTDS model are to rated condition;
5-2, input FCL control protection system, affirmation capacitor group is heavily thrown pattern;
5-3, the protection of affirmation capacitor super-load drop into;
5-4, the temporary transient locking delay time of affirmation are 2 minutes;
It is 3 times that number of times is heavily thrown in 5-5, affirmation;
5-6, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
5-7, arrange at the runtime of RTDS file, adjust that current value is the 1.8In rated current in the capacitor;
5-8, affirmation FCL control protection system are sent the order of bypass breaker three-phase combined floodgate, the temporary transient locking of FCL control protection system;
5-9, affirmation FCL control protection system are heavily thrown;
5-10, repeat 5-6 step 3 time, confirm FCL control protection system capacitor super-load protection action lay equal stress on throw three times after, confirm that FCL control protection system sends the order of closing a floodgate of bypass breaker three-phase, transfer Permanent lockout to.
Described RTDS real-time simulation pilot system is carried 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, operation RTDS model are to rated condition;
6-2, input FCL control protection system, affirmation capacitor group is heavily thrown pattern;
6-3, the protection of affirmation capacitor super-load drop into;
6-4, the temporary transient locking delay time of affirmation are 2min;
It is 3 times that number of times is heavily thrown in 6-5, affirmation;
6-6, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
6-7, arrange at the runtime of RTDS file, adjust that current value is the 1.8In rated current in the capacitor;
6-8, affirmation FCL control protection system are sent the order of bypass breaker three-phase combined floodgate, FCL control protection system Permanent lockout.
Wherein, above-mentioned In is the rated operational current of capacitor.
Compared with the prior art, advantage of the present invention is:
1. take full advantage of the technical advantage of RTDS, the checking of Computer real time simulation and the control of FCL control protective unit being protected strategy combines, and can add design and debugging work that speed control is protected strategy;
2. adopt the RTDS test can test the performance index of FCL control protective unit bottom application software, the correctness of control protection logic and control protection outlet provides technical guarantee for the success of fault current limiter device puts into operation;
3. adopt RTDS and TFR transient state wave recording device dual logging mode, searching of failure problems is convenient in the mutual confirmation that helps to record the result, guarantees record result's reliability, helps the reproduction of phenomenon of the failure and the eliminating that produces reason.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of RTDS real-time simulation pilot system of the present invention;
Fig. 2 is the process blocks synoptic diagram of the present invention's " capacitor super-load alarm " protection test;
Fig. 3 is the process blocks synoptic diagram of the present invention's " capacitor super-load alarm " protection test under " electric capacity is thought highly of the throwing pattern " pattern;
Fig. 4 is the process blocks synoptic diagram of the present invention's " capacitor super-load alarm " protection test under " capacitor is not heavily thrown " pattern.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Among Fig. 1, technical scheme of the present invention provides a kind of RTDS test method of fault current limiter device, it is characterized in that setting up the RTDS real-time simulation pilot system that a cover comprises RTDS testing equipment, power amplifier, oscillograph, digimer and FCL control protective unit; Described FCL control protective unit comprises data summarization unit, protected location, TFR unit, switching value input block, GPS unit, industrial control computer and analogue measurement case.
When testing, sent through the RTDS analog signals after number-mould conversion by the RTDS testing equipment, be used for the fault-signal of simulation actual moving process; Described RTDS analog signals is through exporting to the measuring system of FCL control protection system behind the power amplifier; Described measuring system carries out delivering to behind the signal condition AD D/A converter module in the measuring system to the analog signals of input, and the result after the AD digital-to-analog conversion is delivered to FCL control protection system by optical fiber transmission after through packing; Adopt the mutual of logical signal between I/O Interface realization FCL control protection system and the RTDS testing equipment in the RTDS real-time simulation test.
Further, the external TFR transient state of described FCL control protection system wave recording device is for each electric parameters of register system transient state process, in order to analyze afterwards.
Further, the failure wave-recording function of utilizing described RTDS testing equipment to carry, the record ripple result who controls the external TFR transient state of protection system wave recording device with FCL carries out comparing of synchronization current/voltage/on off state parameter, mutually verifies.
Development along with power technology; the protective relaying device structure of electric system; principle is different; when under the specific method of operation, breaking down; traditional steady-state analysis method is limited to; and the RTDS real-time emulation system has the function that the electric network fault reproduction is carried out in COMTRADE formatted file (ieee standard electrical power system transient data interchange general format) playback; in addition; RTDS also has the defeated people of analog quantity; output card; switching value is failed the people; output card; can supply RTDS and external physical equipment connection by these interface integrated circuit boards, realize the closed loop test to opertaing device and protective device.
COMTRADE is the ieee standard electrical power system transient data interchange general format.This standard be the transient-wave that collects of electric system or electric power system model and casualty data document definition a kind of form.This form is intended to provide a kind of data interchange general format that is easy to illustrate.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 file (xxxxxxxx.HDR)
Heading file is a kind of optional ASCII text file of being set up by the author of COMTRADE data, and the founder of heading file can create with the order of any needs any information.The form of heading file is ASCII.
1.2 configuration file (xxxxxxxx.CFG)
Configuration file is a kind of ASCII text file, is used for correctly illustrating the form of data (.DAT) file, therefore must preserve with a kind of concrete form.This document has been annotated data (.DAT) file institute inclusion information, comprising items such as sampling rate, number of channels, frequency, channel information.Field identification file in the configuration file the first row according to time (such as 1991,1999 etc.) of COMTRADE Standard Edition.If this field does not exist or empty, suppose that then file then abides by the initial issue date (1991) of standard.It is with ASCII fromat or with the field of binary format storage that configuration file also comprises the data file followed of identification.
1.3 data file (xxxxxxxx.DAT)
Data file comprises the value of each all input channel of sampling in the record.Data file comprises the time tag of a serial number and each sampling.These sampled values are except the data of record analog input, and also recording status namely represents the input of ON/OFF signal.
1.4 message file (xxxxxxxx.INF)
Message file is that a kind of document creation person wishes to make it the special information to outside user's Useful Information.Message file is optional file.The All Files of COMTRADE definition is all annotated in ieee standard electrical power system transient data interchange general format Std C37.111-1991 or IEEE Std C37.111-1999 version.
The RTDS real-time emulation system has advantage as above just, can carry out easily so that the checking of strategy is protected in Computer real time simulation and the control of FCL control protective unit.
Because it is numerous that strategy is protected in the control of FCL control protective unit; now only select several the narration, those skilled in the art is after having grasped the thinking that the present invention deals with problems; can without performing creative labour, reproduce technique effect of the present invention and goal of the invention fully.
Among Fig. 2, RTDS real-time simulation pilot system is carried out " capacitor super-load alarm " protection test of FCL control protection system according to the following step:
4-1, operation RTDS model are to rated condition;
4-2, input FCL control protection system are confirmed the heavily throwing of capacitor group;
4-3, the protection of affirmation capacitor super-load drop into;
4-4, affirmation capacitor super-load alarm definite value are set to 1.1In; Alarm time-delay 10s;
4-5, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
4-6, arrange at the runtime of RTDS file, adjust that current value is the 1.1In rated current in the capacitor;
4-7, affirmation FCL control protection system are sent the capacitor super-load alarm.
Among Fig. 3, RTDS real-time simulation pilot system is carried out " capacitor super-load alarm " protection test under " electric capacity is thought highly of the throwing pattern " pattern of FCL control protection system according to the following step:
5-1, operation RTDS model are to rated condition;
5-2, input FCL control protection system, affirmation capacitor group is heavily thrown pattern;
5-3, the protection of affirmation capacitor super-load drop into;
5-4, the temporary transient locking delay time of affirmation are 2 minutes;
It is 3 times that number of times is heavily thrown in 5-5, affirmation;
5-6, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
5-7, arrange at the runtime of RTDS file, adjust that current value is the 1.8In rated current in the capacitor;
5-8, affirmation FCL control protection system are sent the order of bypass breaker three-phase combined floodgate, the temporary transient locking of FCL control protection system;
5-9, affirmation FCL control protection system are heavily thrown;
5-10, repeat 5-7 step 3 time, confirm FCL control protection system capacitor super-load protection action lay equal stress on throw three times after, confirm that FCL control protection system sends the order of closing a floodgate of bypass breaker three-phase, transfer Permanent lockout to.
Among Fig. 4, RTDS real-time simulation pilot system is carried 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, operation RTDS model are to rated condition;
6-2, input FCL control protection system, affirmation capacitor group is heavily thrown pattern;
6-3, the protection of affirmation capacitor super-load drop into;
6-4, the temporary transient locking delay time of affirmation are 2min;
It is 3 times that number of times is heavily thrown in 6-5, affirmation;
6-6, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
6-7, arrange at the runtime of RTDS file, adjust that current value is the 1.8In rated current in the capacitor;
6-8, affirmation FCL control protection system are sent the order of bypass breaker three-phase combined floodgate, FCL control protection system Permanent lockout.
Because involved device name, action term and meaning of parameters is the act.std of this area in above-mentioned each test, so its concrete meaning and technology contents are no longer narrated at this.
By above test method as can be known, RTDS real-time simulation pilot system can realize real-time verification and the modification to the control ﹠ protection strategy of FCL control protective unit fully.Simultaneously, can test the FCL control protective unit and realize that control protection logic is correct reliably, rapidly sensitive with control protection outlet action modeling.
The present invention takes full advantage of the technical advantage of RTDS, and the checking of Computer real time simulation and the control of FCL control protective unit being protected strategy combines, and can add design and debugging work that speed control is protected strategy; And adopt the RTDS test can test the performance index of FCL control protective unit bottom application software, the correctness of control protection logic and control protection outlet provides technical guarantee for the success of fault current limiter device puts into operation; In addition, the technical program adopts RTDS and TFR transient state wave recording device dual logging mode, help to record result's mutual confirmation, be convenient to searching of failure problems, guarantee record result's reliability, help the reproduction of phenomenon of the failure and the eliminating that produces reason, final success for fault current limiter device puts into operation technical guarantee is provided.
The present invention can be widely used in the control of FCL control protective unit and protect the fields such as the design of strategy, check.
Claims (7)
1. the RTDS test method of a fault current limiter device is characterized in that:
Set up the RTDS real-time simulation pilot system that a cover comprises RTDS testing equipment, power amplifier, oscillograph, digimer and FCL control protective unit;
Described FCL control protective unit comprises data summarization unit, protected location, TFR unit, switching value input block, GPS unit, industrial control computer and analogue measurement case;
Sent through the RTDS analog signals after number-mould conversion by the RTDS testing equipment, be used for the fault-signal of simulation actual moving process;
Described RTDS analog signals is through exporting to the measuring system of FCL control protection system behind the power amplifier;
Described measuring system carries out delivering to behind the signal condition AD D/A converter module in the measuring system to the analog signals of input, and the result after the AD digital-to-analog conversion is delivered to FCL control protection system by optical fiber transmission after through packing;
Adopt the mutual of logical signal between I/O Interface realization FCL control protection system and the RTDS testing equipment in the RTDS real-time simulation test.
2. according to the RTDS test method of fault current limiter device claimed in claim 1, it is characterized in that the external TFR transient state of described FCL control protection system wave recording device, be used for each electric parameters of register system transient state process, in order to analyze afterwards.
3. according to the RTDS test method of claim 1 or 2 described fault current limiter devices; it is characterized in that the failure wave-recording function of utilizing described RTDS testing equipment to carry; carry out comparing of synchronization current/voltage/on off state parameter with the record ripple result of the external TFR transient state of FCL control protection system wave recording device, mutually verify.
4. according to the RTDS test method of fault current limiter device claimed in claim 1, it is characterized in that 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, operation RTDS model are to rated condition;
4-2, input FCL control protection system are confirmed the heavily throwing of capacitor group;
4-3, the protection of affirmation capacitor super-load drop into;
4-4, affirmation capacitor super-load alarm definite value are set to 1.1In; Alarm time-delay 10s;
4-5, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
4-6, arrange at the runtime of RTDS file, adjust that current value is the 1.1In rated current in the capacitor;
4-7, affirmation FCL control protection system are sent the capacitor super-load alarm.
5. according to the RTDS test method of fault current limiter device claimed in claim 1, it is characterized in that described RTDS real-time simulation pilot system carries out " capacitor super-load alarm " protection test under " electric capacity is thought highly of the throwing pattern " pattern of FCL control protection system according to the following step:
5-1, operation RTDS model are to rated condition;
5-2, input FCL control protection system, affirmation capacitor group is heavily thrown pattern;
5-3, the protection of affirmation capacitor super-load drop into;
5-4, the temporary transient locking delay time of affirmation are 2 minutes;
It is 3 times that number of times is heavily thrown in 5-5, affirmation;
5-6, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
5-7, arrange at the runtime of RTDS file, adjust that current value is the 1.8In rated current in the capacitor;
5-8, affirmation FCL control protection system are sent the order of bypass breaker three-phase combined floodgate, the temporary transient locking of FCL control protection system;
5-9, affirmation FCL control protection system are heavily thrown;
5-10, repeat 5-7 step 3 time, confirm FCL control protection system capacitor super-load protection action lay equal stress on throw three times after, confirm that FCL control protection system sends the order of closing a floodgate of bypass breaker three-phase, transfer Permanent lockout to.
6. according to the RTDS test method of fault current limiter device claimed in claim 1, it is characterized in that 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, operation RTDS model are to rated condition;
6-2, input FCL control protection system, affirmation capacitor group is heavily thrown pattern;
6-3, the protection of affirmation capacitor super-load drop into;
6-4, the temporary transient locking delay time of affirmation are 2min;
It is 3 times that number of times is heavily thrown in 6-5, affirmation;
6-6, arrange at the runtime of RTDS file, adjust that current value is the In rated current in the capacitor;
6-7, arrange at the runtime of RTDS file, adjust that current value is the 1.8In rated current in the capacitor;
6-8, affirmation FCL control protection system are sent the order of bypass breaker three-phase combined floodgate, FCL control protection system Permanent lockout.
7. according to the RTDS test method of claim 4,5 or 6 described fault current limiter devices, it is characterized in that described In is the rated operational current of capacitor.
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| CN106503287A (en) * | 2016-09-18 | 2017-03-15 | 昆明理工大学 | A kind of transient range unit detection method based on real-time digital simulator |
| 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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