CN103810347B - General-purpose relay RTDS emulation modelling methods with adjustable drop-off to pick-up radio and actuation time - Google Patents
General-purpose relay RTDS emulation modelling methods with adjustable drop-off to pick-up radio and actuation time Download PDFInfo
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- CN103810347B CN103810347B CN201410070495.5A CN201410070495A CN103810347B CN 103810347 B CN103810347 B CN 103810347B CN 201410070495 A CN201410070495 A CN 201410070495A CN 103810347 B CN103810347 B CN 103810347B
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Abstract
The invention discloses a kind of general-purpose relay RTDS emulation modelling methods with adjustable drop-off to pick-up radio and actuation time, inventor is based on RTDS custom programming technologies, utilize the real-time of RTDS, the stationarity executed by program code sequence and the flexibility defined in conjunction with variable data, with static variable deposit the mode of historical data to ensure established model each state variable current time and previous moment numerically correct stepping recurrence relation, to make, established model meets practical protective relaying device drop-off to pick-up radio less than 1 and actuation time is not the simulation requirements of 0 this two basic physical properties.The general-purpose relay RTDS models obtained using the method can the practical relay physical property of accurate simulation, there is physical effect identical with practical protective relaying device, solve the problems, such as that the existing model libraries of RTDS lack high emulation relay model.
Description
Technical field
The invention belongs to electric system real-timedigital simulation modeling technique fields, more particularly to one kind having adjustable return system
The general-purpose relay RTDS emulation modelling methods of number and actuation time.
Background technology
Real Time Digital Simulator RTDS（Real-Time Digital Simulator）It is a kind of digitized physical analogy
Experimental system, it combine Digital Simulation high efficient and flexible and physical analogy intuitive and reliable two kinds of assay formats of property spy
It is long, thus had been more and more widely used in China's electric power research and engineering field, especially protected in electric power system fault
In terms of the effective verification of scheme, RTDS gradually replaces tradition with the accuracy of its model parameter and the real-time of simulation process
Physics dynamic model experiment device or/and offline software calculating instrument.
With the raising of simulation requirements, RTDS standard component model libraries（RSCAD/Master）In existing component models not
The demand of system modelling can be fully met.Relay is that electric power system fault protects most basic element, practical relay and its
There are two physical properties for the breaker tool of control：First, the return value after the actuating of relay is less than action setting valve, that is, return to system
Number is less than 1；Second is that relay is acted to breaker completion disjunction there are an intrinsic time delay after reaching action setting valve, this
Period, no matter why relay sensed quantity was worth, and breaker will not all act.Relay（The breaker controlled including it）This
Two physical properties determine that its digital simulation model necessarily has considerably complicated action sequence and logical relation, however at present
Method RTDS standard components there is no to build, this blank leads to the reduction of Digital Simulation confidence level and seriously affects the application of RTDS
Efficiency.
Invention content
The technical problem to be solved in the present invention is to provide a kind of general relays with adjustable drop-off to pick-up radio and actuation time
Device RTDS emulation modelling methods enrich the existing model libraries of RTDS, meet power train construction in a systematic way to build high emulation relay model
The actual demand of mould.
In order to solve the above technical problems, the present invention uses following technical scheme：With adjustable drop-off to pick-up radio and actuation time
General-purpose relay RTDS emulation modelling methods, include the following steps：
<1>Create electric relay simulated model RTDS graphic user interfaces
The graphic user interface of RTDS relay models, including model figure interface icon are created with CBuilder editing machines
Dialog box, and Definition Model input/output variable and action setting valve, drop-off to pick-up radio, actuation time are set with model parameter
Deng the data type of three model parameters；Model is named RELAY1.def, which is stored in document form data
Under RTDS networking PC machine or the user model library RSCAD/Ulib catalogues of work station；
<2>The data type of Definition Model internal processes
Main includes the static variable and the newer temporary variable of real-time stepping for implementing stepping deposit；It is edited with CBuilder
Two core data files that device generates model are named relay1.h and relay1.c and are stored in RTDS networking PC machine respectively
User-defined model source program code library RTDS_USER BIN under CMODEL_SOURCE catalogues；Relay1.h is corresponded to
The type definition of the human-machine interaction datas such as input variable, output variable, model parameter, these data exist in model graphical interfaces
It can be automatically performed type definition when relay1.h is linked with graphical interfaces file RELAY1.def；Relay1.c corresponds to mould
The real-time stepping of type executes program, which presses step<3>Hand weaving is completed；
<3>Real-time stepping inside compiling model executes program
Include a series of C language source code of components such as comparator, timer, cycle counter and-NOT logic door；
Relay1.c files are opened with text editor Notepad or TextPad and wherein with the real-time stepping of C language compiling model
Program code；Relay1.c files are divided into two program code areas：When static variable setting area, for defining simultaneously registered state
Variable history value；Second is that stepping in real time executes program area, the model for writing current time executes program, including definition is temporarily
Variable and intermediate variable；Program composition is theoretical according to diff, and implementation method is to form the time stepping type of state variable；
<4>Build model entirety stepping flow
It is checked including internal exchange of data and program execution order layout and external input/dynamically associating property of output.
Step<4>Middle stepping flow is carried out as follows：Real-time tracking compares input value In and action setting valve SETTING simultaneously
The state for monitoring back output valve Out, such as In >=SETTING conditions once establishment and Out=0, then start timer and dynamic
Make the state change that current time output Out is latched during time thold, when timer reaches thold, if In >=
SETTING conditions still meet, then timer reset and make to export Out=1 this moment；Work as In<SETTING × resetcoff and
When Out=1 is not in timer blocking, make output Out=0 this moment；As SETTING × resetcoff≤In<
When SETTING, output Out is set to remain stationary this moment constant.
Sequential is executed for each component models in existing RTDS java standard libraries and is difficult to determining problem, and inventor is based on RTDS certainly
It defines programming technique and establishes a kind of general relay with adjustable drop-off to pick-up radio and actuation time using the real-time of RTDS
Device RTDS emulation modelling methods, the stationarity executed by program code sequence and the flexibility defined in conjunction with variable data, are used
Static variable deposits the mode of historical data, and to ensure, established model each state variable current time and previous moment be numerically just
True stepping recurrence relation, to make established model meet practical protective relaying device drop-off to pick-up radio less than 1 and actuation time not
For the simulation requirements of 0 this two basic physical properties.The general-purpose relay RTDS models obtained using the method being capable of accurate simulation
Practical relay physical property has physical effect identical with practical protective relaying device, efficiently solves the existing moulds of RTDS
Type library lacks the problem of high emulation relay model.
The present invention has following outstanding advantages：1）It is obtained with physics tau-effect with the mode of computer software programming
L-G simulation test model；2）The input of institute's established model and its action setting valve can be any physical descriptor or dimensionless variable, because
And simulation object can be various types of other relay, have extensive versatility；3）Institute's established model can accurately embody reality
The physics time-series dynamics characteristic of protective relaying device improves the Simulation Confidence of RTDS electric power system faults protection.
Description of the drawings
Fig. 1 is the icon schematic diagram for the model that general-purpose relay RTDS emulation modelling methods of the present invention create.
Fig. 2 is the parameter setting dialog box signal for the model that general-purpose relay RTDS emulation modelling methods of the present invention create
Figure.
Fig. 3 is the real-time stepping flow diagram of general-purpose relay RTDS emulation modelling method Programs of the present invention.
Fig. 4 is the case effect schematic diagram using the present invention.
Specific implementation mode
By the following examples and in conjunction with attached drawing, further elaborate to the present invention.
Embodiment 1
<1>Create electric relay simulated model RTDS graphic user interfaces
The graphic user interface of RTDS relay models, including model figure interface icon are created with CBuilder editing machines
Dialog box is set with model parameter（Such as Fig. 1 and 2）, and Definition Model input/output variable and action setting valve, return system
The data type of three model parameters such as number, actuation time；Model is named RELAY1.def, and the model interface is with data file shape
Formula is stored under RTDS networking PC machine or the user model library RSCAD/Ulib catalogues of work station；
<2>The data type of Definition Model internal processes
Main includes the static variable and the newer temporary variable of real-time stepping for implementing stepping deposit；It is edited with CBuilder
Two core data files that device generates model are named relay1.h and relay1.c and are stored in RTDS networking PC machine respectively
User-defined model source program code library RTDS_USER BIN under CMODEL_SOURCE catalogues；Wherein, relay1.h
Corresponding to the type definition of the human-machine interaction datas such as input variable, output variable, model parameter in model graphical interfaces, these numbers
It can be automatically performed type definition according to when linking relay1.h with graphical interfaces file RELAY1.def；Relay1.c is corresponded to
Program is executed in the real-time stepping of model, which presses step<3>Hand weaving is completed；
<3>Real-time stepping inside compiling model executes program
Include a series of C language source code of components such as comparator, timer, cycle counter and-NOT logic door；
Relay1.c files are opened with text editor Notepad or TextPad and wherein with the real-time stepping of C language compiling model
Program code；Relay1.c files are divided into two program code areas：When static variable setting area, for defining simultaneously registered state
Variable history value（Back or the calculated value at preceding multistep moment）；Second is that stepping in real time executes program area, when for writing current
The model at quarter executes program, including defines some necessary temporary variables and intermediate variable；Program composition is according to numerical difference sub-argument
By implementation method is to form the time stepping type of state variable；
<4>Build model entirety stepping flow
It is checked including internal exchange of data and program execution order layout and external input/dynamically associating property of output.Step
It is carried out as follows into flow（Such as Fig. 3）：Real-time tracking compares input value In and action setting valve SETTING and to monitor back defeated
The state for going out value Out, such as In >=SETTING conditions once establishment and Out=0, then start timer and in actuation time thold
During be latched current time output Out state change, when timer reaches thold, if In >=SETTING conditions according to
So meet, then timer reset and makes to export Out=1 this moment；Work as In<SETTING × resetcoff and Out=1 are not in meter
When device blocking when, make output Out=0 this moment；As SETTING × resetcoff≤In<When SETTING, make output this moment
Out remains stationary constant.
Dialog box base is arranged in the input In/ output Out interfaces of the model graphical interfaces created by above-mentioned steps, model parameter
It is developed in CBuilder editing machines, sequential correctness and human-computer interaction style and the RTDS standard component moulds of flow chart of data processing
Type library（RSCAD/Master）It is consistent；Drop-off to pick-up radio after the action setting valve SETTING of institute's established model, action
The model parameters such as resetcoff, breaker actuation time thold are set by user according to practical protective relaying device nominal parameters
It sets, to ensure that model is applicable in versatility and the flexibility of simulation object；Breaker actuation time parameter by the way that model is arranged can
Simulate the of short duration disturbance rejection property that various protective relaying devices are intrinsic in practice；Drop-off to pick-up radio parameter by the way that model is arranged can incite somebody to action
Model is widely used in the RTDS simulating, verifyings experiment of various projects of relay protection schemes；The input of institute's established model is double real
Number type double-precision variable, output are int integer type 0-1 switching variables, and the logical relation of input/output is as follows：
Simulating, verifying experiment is carried out to above-mentioned model, concrete mode is：From RSCAD/Ulib user's elements library on RTDS
In recall this component models DELAY1.def to RSCAD/DRAFT graphical modelings interface；Model parameter setting dialog box is opened again
And model parameter is arranged according to simulation object, this example simulation object is over-current protection relay, and action setting valve 1.0 returns
Return coefficient 0.85,0.03 second breaker actuation time.The input of relay model is one branch of power grid from breaking down event
Hinder the electric current dynamic change waveform to disappear, as shown in figure 4, width curve is the output state of model under Fig. 4.As it can be seen that failure originates
Although when with 0.01 second high frequency components and disturbance amplitude be more than actuating of relay setting valve, relay do not move at once
Make, but is acted after its intrinsic actuation time（Output is by 0 → 1）；On the other hand, during failure vanishes, only when event
When barrier current amplitude drops to 0.85 or less, the output state of relay just returns（Output is by 1 → 0）.
Confirmatory experiment fully demonstrates the simulation model created using the present invention and practical relay physics having the same
Property can meet the simulation requirements of relay protection of power system.
Claims (1)
1. a kind of general-purpose relay RTDS emulation modelling methods with adjustable drop-off to pick-up radio and actuation time, it is characterised in that packet
Include following steps：
<1>Create electric relay simulated model RTDS graphic user interfaces
The graphic user interface of RTDS relay models, including model figure interface icon and mould are created with CBuilder editing machines
Dialog box, and Definition Model input/output variable and action setting valve, drop-off to pick-up radio, actuation time three is arranged in shape parameter
The data type of model parameter；Model is named RELAYl.def, which is stored in RTDS with document form data
Under PC machine of networking or the user model library RSCAD/Ulib catalogues of work station；
<2>The types of variables of Definition Model internal processes
Include the static variable and the newer temporary variable of real-time stepping of real-time stepping deposit；Mould is generated with CBuilder editing machines
Two core data files of type be named relayl.h and relayl.c respectively and be stored in RTDS networking PC machine user make by oneself
Adopted model source program's code file library RTDS_USER BIN under CMODEL_SOURCE catalogues；Relayl.h corresponds to illustraton of model
Input variable, the type definition of output variable, model parameter human-machine interaction data in shape interface, these data are by relayl.h
It can be automatically performed type definition when being linked with graphical interfaces file RELAY1.def；Relayl.c corresponds to the real-time step of model
Into program is executed, which presses step<3>Hand weaving is completed；
<3>Real-time stepping inside compiling model executes program
Including comparator, timer, cycle counter and with-or-NOT logic door C language source code；Use text editor
Notepad or TextPad opens relayl.c files and wherein with the real-time stepping program code of C language compiling model；
Relayl.c files are divided into two program code areas：When static variable setting area, for defining simultaneously registered state variable history
Value；Second is that stepping in real time executes program area, the model for writing current time executes program, including defines temporary variable in
Between variable；Program composition is theoretical according to diff, and implementation method is to form the time stepping type of state variable；
<4>Build model entirety stepping flow
It is checked including internal exchange of data and program execution order layout and external input/dynamically associating property of output；
Step<4>Middle stepping flow is carried out as follows：Real-time tracking compares input value In and action setting valve SETTING and monitors
The state of back output valve Out, such as In >=SETTING conditions once establishment and Out=0, then start timer and acting
It is latched current time during time thold and exports the state change of Out, when timer reaches thold, if In >=
SETTING conditions still meet, then timer reset and make to export Out=1 this moment；Work as In<SETTING × resetcoff and
When Out=1 is not in timer blocking, make output Out=0 this moment；As SETTING × resetcoff≤In ＜
When SETTING, output Out is set to remain stationary this moment constant；Resetcoff is drop-off to pick-up radio after action.
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| CN103246780A (en) * | 2013-05-17 | 2013-08-14 | 广东电网公司电力科学研究院 | Low-pass filter element modeling method and system in real-time digital simulation of electric system |
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| Using a Multi-Threaded Time-Step to Model a Multi-Function Relay in a Real Time Digital Simulator;Dean S等;《Developments in Power System Protection，2008》;20080320;第162-167页的第5节 * |
| 基于RTDS数字动模的继电保护设备分析测试技术研究;吴姜;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20140115;第2014年卷(第01期);第C042-660的第1.3节本文主要研究工作、第3.2节、第3.3节、第4.1.3节、第5.1节、第5.2节、第5.3节和图5-2、图5-3、图5-5、图5-6、图5-7 * |
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