CN109142919A - Extra-high voltage direct-current based on the simulation of overall process operation characteristic keeps the scene intact test method, device and system - Google Patents
Extra-high voltage direct-current based on the simulation of overall process operation characteristic keeps the scene intact test method, device and system Download PDFInfo
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- CN109142919A CN109142919A CN201810889145.XA CN201810889145A CN109142919A CN 109142919 A CN109142919 A CN 109142919A CN 201810889145 A CN201810889145 A CN 201810889145A CN 109142919 A CN109142919 A CN 109142919A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The present invention discloses a kind of extra-high voltage direct-current based on the simulation of overall process operation characteristic and keeps the scene intact test method, device and system, comprising: building major loop model of extra-high voltage direct-current transmission engineering alternating current-direct current and DC control system equivalent model；According to the extra-high voltage direct-current transmission engineering method of operation of required realization, model parameter configuration is carried out；According to the function logic of tested protection, protection test configurations are carried out；Transient emulation operation is carried out using configured model to calculate, and obtains simulation run data；Simulation run data are extracted and handled, obtain emulating signal and control bus emulation signal eventually for the ac analog emulation signal, digital quantity emulation signal, switching value that are exported respectively to tested protective device；The protection exit action message of tested protective device is obtained, and is stored.The present invention is simulated by the overall process operation characteristic to extra-high voltage direct-current transmission engineering, it can be ensured that the reliability of extra-high voltage direct-current defencive function test.
Description
Technical field
The present invention relates to extra-high voltage direct-currents to protect detection technique field, especially a kind of to be simulated based on overall process operation characteristic
Extra-high voltage direct-current keep the scene intact test macro.
Background technique
DC protection system is the security guard of extra-high voltage DC transmission system, and real-time monitoring inverter, filter etc. are set
Standby and region various running state parameters quickly protect all electrical equipments such as converter station and DC power transmission line from electricity
The damage of gas failure has important influence to the operation of entire electric system.In recent years, with more and more extra-high voltage direct-currents
Building up successively for power transmission engineering puts into operation, and the workload of extra-high voltage direct-current protection system debug and O&M increasingly aggravates.
Extra-high voltage direct-current protection system is related to the analog quantity sampling input of routine transformer, the digital quantity of electronic type CT is adopted
Sample input, On-off signal/output and with the diversified input/output information such as the high-speed traffic of control system；In addition,
The fault signature of extra-high voltage direct-current transmission engineering and the DC engineering method of operation, control system response etc. are related, extremely complex.Cause
This, the conventional AC that extra-high voltage direct-current transmission engineering dynamic process can not be simulated, Control protection system high-speed traffic can not be simulated
Relay protection on-the-spot test method and apparatus cannot achieve the validity test of extra-high voltage direct-current defencive function and performance.This makes
Extra-high voltage direct-current transmission engineering field adjustable or O&M stage are only capable of setting number by control protection software or modifying definite value making to protect
Movement, to examine the correctness of outlet loop, and lacks effective extra-high voltage direct-current protection test technology and means, is unfavorable for spy
The safe and stable operation of high voltage direct current transmission project.
Summary of the invention
The object of the present invention is to propose that a kind of extra-high voltage direct-current based on the simulation of overall process operation characteristic keeps the scene intact test
Methods, devices and systems are simulated by the overall process operation characteristic to practical extra-high voltage direct-current transmission engineering, will be simulated
The simulation run data arrived are used to carry out on-the-spot test to extra-high voltage direct-current protective device, it can be ensured that extra-high voltage direct-current protects function
The reliability of energy, the performance test results.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
In a first aspect, keeping the scene intact the test method of test macro the present invention provides a kind of extra-high voltage direct-current, comprising:
S1 determines fault test type according to the defencive function type of tested protective device；And it is all kinds of according to tested protective device
The function logic of defencive function determines the emulation letter of the corresponding failure relevant parameter of corresponding failure test-types and required output
Number；
S2, for any fault test type, by the corresponding failure relevant parameter of the fault test type, as what is constructed in advance
The input of major loop model of alternating current-direct current and control system equivalent model is based on major loop model of alternating current-direct current and control
System equivalent model processed carries out fault transient simulation calculation, obtains the emulation under the corresponding failure operation mode of fault test type
Operation data；
S3 carries out data pick-up to the simulation run data that S2 is obtained, the emulation exported needed for obtaining according to fault test type
The corresponding each simulation run data of signal；
S4 is respectively processed each simulation run data that S3 is extracted, obtain ac analog, digital quantity, switching value with
And control bus emulates signal, is exported respectively to the corresponding test volume input terminal of tested protective device；
S5, the protection act for obtaining tested protective device exports signal, and stores.
The test process of the above method of the present invention is intended to simulate practical extra-high voltage direct-current transmission engineering in the various methods of operation
Under operation characteristic, and obtain corresponding operation data, the protection act realized as all kinds of defencive functions of tested protective device
Foundation, so as to which for judging under specified fault test type, whether the protection exit signal of tested protective device meets
Defencive function corresponding to fault test type.Under the premise of having specified fault test type, according to tested protective device
Whether the corresponding defencive function that protection exit signal analyzes tested protective device is normally the prior art.
Preferably, in S1, described major loop model of the alternating current-direct current constructed in advance includes AC system submodel, exchange
It is filter submodel, converter power transformer submodel, valve group submodel, DC filter submodel, smoothing reactor submodel, straight
Flow Line and earthing pole submodel and switch submodel；
Each submodel in major loop model of alternating current-direct current carries out model parameter according to practical extra-high voltage direct-current transmission engineering and matches
It sets, including to AC system parameter, alternating current filter type and quantity, DC filter type and quantity, valve group input quantity
It is configured with Ground return/metallic return selection；
The control system equivalent model constructed in advance is for simulating control system in practical extra-high voltage direct-current transmission engineering
Control characteristic.Unlock/lock-in control of the control system equivalent model for realizing valve group, valve pulse generation/ignition control, current limliting
The simulation of the DC control systems basic function such as control and current/voltage blow-out angle closed-loop control, and control characteristic meets reality
The operation characteristic of border extra-high voltage direct-current transmission engineering.
In S1, the corresponding failure relevant parameter of each fault test type includes: that abort situation, fault type and failure continue
Time parameter；Signal needed for defencive function is realized in tested protection includes AC/DC side voltage, AC/DC side electric current, switch position
Set the emulation signal exported needed for determining with control system status signal, S3, that is, each signal needed for determining tested protect, with therefore
Hinder test-types and the tested corresponding point position of defencive function logic.It is set according to each defencive function logic of tested protective device
It sets corresponding failure relevant parameter and corresponding signal point position is the prior art.
In S2, the input of failure relevant parameter is allowed the invention to based on major loop model of the alternating current-direct current constructed
With control system equivalent model, fault transient simulation calculation is carried out, is mutually being met the tendency of with imitating practical extra-high voltage direct-current transmission engineering
Operation characteristic under line mode, to generate corresponding transient state supplemental characteristic.
Corresponding with S1, in S3, the data pick-up carried out to simulation run data is, according to current failure test class
Type extracts alternating voltage current data, the DC voltage and current data, switching value number of corresponding measuring point position in simulation run data
Accordingly and control bus data；
S4 includes: to obtain ac analog to the progress digital-to-analogue conversion of AC voltage/current data and power amplification that extract
Emulate signal；The DC voltage/current data extracted are exported using optical fiber sending module, obtain digital quantity emulation letter
Number；The switching value data extracted is exported using isolation module, obtains switching value emulation signal；Control to extracting
Bus data adapt to the protocol conversion of tested protective device, obtains control bus emulation signal.
Further, in test method of the present invention, after step S4 obtains protection act outlet signal, according to the letter got
Number failure wave-recording is generated, and then failure wave-recording is stored.Subsequent facilitate extracts stored failure wave-recording, so as at any time
Defencive function analysis is carried out to tested protective device.It is related according to specified fault test type when test and its corresponding failure
Parameter, deducibility is tested theoretical protection exit data of the protective device when defencive function is normal, by theoretical protection exit data
It is compared with the protection exit action message or fault recorder data actually got, that is, can determine whether corresponding defencive function
It is whether normal.
Second aspect keeps the scene intact test device invention additionally discloses a kind of extra-high voltage direct-current, comprising:
Fault test type and fault parameter configuration module, for determining event according to the defencive function type for being tested protective device
Hinder test-types；And according to the function logic of all kinds of defencive functions of tested protective device, determine that corresponding failure test-types are corresponding
Failure relevant parameter and required output emulation signal；
Fault transient simulation algorithm model, for being directed to any fault test type, by the corresponding failure of fault test type
Relevant parameter, as the input of major loop model of the alternating current-direct current constructed in advance and control system equivalent model, based on friendship
Major loop model of direct current and control system equivalent model carry out fault transient simulation calculation, obtain fault test type pair
Simulation run data under the failure operation mode answered；
Simulation run data extraction module, for carrying out data pick-up to simulation run data, the emulation letter exported needed for obtaining
Number corresponding each simulation run data；
Simulation run data processing module is respectively processed each simulation run data extracted, obtain ac analog,
Digital quantity, switching value and control bus emulate signal, are exported respectively to the corresponding test volume input terminal of tested protective device；
Protection act exports signal acquisition module, and the protection act for obtaining tested protective device exports signal, and stores.
The third aspect keeps the scene intact test macro invention additionally discloses a kind of extra-high voltage direct-current, including network interface, storage
Device and processor, in which:
Network interface is for during being received and sent messages between other ext nal network elements, signal to be sended and received；
Memory is for storing the computer program instructions that can be run on the processor；
Processor is used for when running the computer program instructions, is executed and is transported described in any one of first aspect based on overall process
The extra-high voltage direct-current of row simulated behavior keep the scene intact test method the step of.
Fourth aspect keeps the scene intact test macro the present invention also provides a kind of extra-high voltage direct-current, including is connected with each other communication
Host computer and slave computer:
Host computer includes the first data-interface, first memory and first processor；First data-interface is for host computer under
Signal transmission between position machine or other ext nal network elements；First memory can be run for storing on the first processor
The number that is obtained from slave computer or other ext nal network elements of computer program instructions, program process data and host computer
According to；
The computer program instructions that the first processor executes include:
Test model construction procedures module is protected, for based on the pass between preset fault test type and failure relevant parameter
Connection relationship, it is primary to the alternating current-direct current constructed in advance using corresponding failure relevant parameter according to the fault test type currently set
Major loop model and control system equivalent model carry out protection test configurations；
Fault transient simulation calculation program module, for based on major loop model of alternating current-direct current and control that configuration is completed
System equivalent model carries out fault transient simulation calculation, the corresponding failure operation side of fault test type currently set
Simulation run data under formula；
Data extraction module, for based on being associated between preset fault test type and the emulation signal of required output
System, each simulation run data corresponding to the emulation signal in simulation run data, with required output are extracted respectively；
Slave computer includes the second data-interface, second memory and second processor；Second data-interface for slave computer with
Signal transmission between position machine or other ext nal network elements；Second memory is based on storing and can run in second processor
The data that calculation machine program instruction, program process data and slave computer obtain from host computer or other ext nal network elements；
Second data-interface include respectively with the analog output unit of tested protective device connection communication, digital output
Unit, switch amount output unit, control bus signal output unit and protection signal acquisition unit；
The computer program instructions that the second processor executes include:
Data processor module, for handling each simulation run data that host computer exports, to respectively obtain exchange
Analog quantity, DC digital amount, switching value and control bus data, and pass through the analog output list in the second data-interface respectively
Member, digital output unit, switch amount output unit, control bus signal output unit carry out signal output；
Protection exit action message capture program module, for acquiring tested protection by the protection signal acquisition unit
The protection exit action signal of device, and exported by the first data-interface to host computer.
Described major loop model of the alternating current-direct current constructed in advance includes AC system submodel, alternating current filter submodule
It type, converter power transformer submodel, valve group submodel, DC filter submodel, smoothing reactor submodel, DC line and connects
Earth polar submodel and switch submodel；
Each submodel in major loop model of alternating current-direct current carries out model parameter according to practical extra-high voltage direct-current transmission engineering and matches
It sets, including to AC system parameter, alternating current filter type and quantity, DC filter type and quantity, valve group input quantity
It is configured with Ground return/metallic return selection；
The control system equivalent model constructed in advance is for simulating control system in practical extra-high voltage direct-current transmission engineering
Control characteristic.
Incidence relation between the preset fault test type and failure relevant parameter includes, fault test type with
The defencive function and abort situation of incidence relation and each tested protective device between tested protective device defencive function, event
Hinder the incidence relation between type and trouble duration；
Incidence relation between the emulation signal of the preset fault test type and required output is fault test type with
Incidence relation between the point position of each emulation signal needed for tested protection.
Further, computer program instructions performed by the first processor of present aspect host computer further include: failure record
Wave generates program module, for generating failure wave-recording waveform according to the protection exit action signal from slave computer；It is generated
Failure wave-recording Waveform storage is to first memory.Convenient for consequent malfunction analysis and the defencive function of tested protective device point
Analysis.
5th aspect, keeps the scene intact test macro invention additionally discloses a kind of extra-high voltage direct-current, including is connected with each other communication
Host computer and slave computer:
Host computer includes model parameter configuration module, test parameter configuration module, simulation algorithm model, data extraction module,
One data interface module and protection act data memory module, in which:
Major loop model of alternating current-direct current and the DC control system of extra-high voltage direct-current transmission engineering are built in simulation algorithm model
System equivalent model；
User is by model parameter configuration module input model configuration parameter information, according to practical extra-high voltage direct-current transmission engineering
Model parameter configuration is carried out to major loop model of the alternating current-direct current；And preset survey is inputted by test parameter configuration module
Function type and its corresponding fault configuration parameter information are tried, to major loop model of the alternating current-direct current and DC control system
System equivalent model carries out protection test configurations；
Simulation algorithm model utilizes configured major loop model of alternating current-direct current and DC control system equivalent model, carries out phase
It answers the fault transient under the method for operation to emulate, obtains the simulation run number for meeting practical extra-high voltage direct-current transmission engineering operation characteristic
According to；
Data extraction module is according to the incidence relation between preset fault test type and the emulation signal of required output, to imitative
In true operation data, each simulation run data corresponding with the emulation signal of required output, extracted respectively, and then pass through the
One data interface module is exported to slave computer；
Slave computer includes data processing module and the second data interface module, in which:
Second data interface module include respectively with the analog output unit of tested protective device connection communication, digital output
Unit, switch amount output unit, control bus signal output unit and protection signal acquisition unit；
Data processing module receives simulation run data from host computer and handles, and obtains ac analog, DC voltage and current, opens
Pass amount and control bus data, and be transmitted separately to the analog output unit of the second data-interface, digital output unit, open
Measure output unit, control bus signal output unit in pass；Data processing module also passes through protection signal acquisition unit and obtains
The protection act of tested protective device exports signal, is transmitted to host computer through the first data interface module；
The protection act that host computer obtains tested protective device exports signal, is stored in protection act data memory module.
Further, host computer further includes failure wave-recording generation module, and failure wave-recording generation module is received according to host computer
The protection act of the tested protective device arrived exports signal, generates corresponding failure wave-recording waveform, and then be stored in protection act
Data memory module.Subsequent various data analyses can be facilitated.
Preferably, major loop model of the alternating current-direct current of simulation algorithm model includes AC system model, alternating current filter
Model, converter power transformer model, valve group model, DC filter model, smoothing reactor model, DC line and earthing pole mould
Type and switch models；User model parameter configuration module input model configuration parameter information includes: AC system parameter, exchange filter
Wave device type and quantity, DC filter type and quantity, valve group input quantity and Ground return/metallic return selection, thus
Realize the different running method of extra-high voltage direct-current transmission engineering.
Unlock/lock-in control of the control system equivalent model for realizing valve group, valve pulse generation/ignition control, current limliting
The simulation of the DC control systems basic function such as control and electric current, voltage blow-out angle closed-loop control, and control characteristic meets reality
The operation characteristic of border extra-high voltage direct-current transmission engineering.
Preferably, the analog output unit of the second data interface module, digital output unit, output switch parameter list
Member, control bus signal output unit and protection act information acquisition unit, respectively include for connecting tested protective device
Hardware interface.
Preferably, data processing module includes the Power PC processor and FPGA, Power PC processor of timing synchronization
The simulation run data extracted are received, FPGA is output this to；FPGA include DA TCU transfer control unit, communication interaction unit and
Multiple-channel output control unit；FPGA carries out communication interaction by communication interaction unit and Power PC processor, is converted by DA
Control unit carries out digital-to-analogue conversion to the alternating voltage current data in simulation run data and obtains ac analog, passes through multichannel
Output control unit according to Power PC processor specified data type and output the time, by ac analog emulate signal with
And DC voltage and current, switching value and the control bus data extracted, it respectively corresponds and is transmitted to the second data interface module
Analog output unit, digital output unit, switch amount output unit and control bus signal output unit.
Preferably, in the second data interface module:
Analog output unit includes power amplification circuit, and the alternating voltage electric current that power amplification circuit receives FPGA output carries out
After power amplification, exported as ac analog by hardware interface；
Digital output unit includes optical fiber transmission circuit, at the DC voltage and current that optical fiber transmission circuit exports FPGA
Reason, and then exported as digital quantity signal by hardware interface；
Switch amount output unit includes isolation circuit, and the switching value of FPGA output is logical as on-off model after isolation circuit
Cross hardware interface output.
Control bus signal output unit includes protocol conversion module, and the control that protocol conversion module receives FPGA output is total
Line number evidence, and the protocol conversion being adapted with tested protective device is carried out to it, the control bus signal after protocol conversion is led to
Cross corresponding hardware interface output.
Beneficial effect
1) the present invention is based on the extra-high voltage direct-currents of overall process operation characteristic simulation to keep the scene intact test method, passes through building extra-high voltage
DC transmission engineering exchanges a major loop model and control system equivalent model, to the overall process of extra-high voltage direct-current transmission engineering
Operation characteristic is simulated, and when so that the present invention being applied to the on-the-spot test of extra-high voltage direct-current protective device, can satisfy a variety of
DC protection system defencive function testing requirement under different running method, while can ensure that and extra-high voltage direct-current protective device is protected
The reliability of the test result of protective function；
2) present invention on host computer by constructing the spy being made of major loop model of alternating current-direct current, control system equivalent model
High voltage direct current transmission project electrical-magnetic model, the different running method and defencive function for configuring extra-high voltage direct-current transmission engineering are surveyed
Channel signal needed for examination, and the diversiform datas such as analog quantity, digital quantity, switching value and control bus signal are realized by slave computer
Protocol conversion and synchronism output, the final on-the-spot test for realizing extra-high voltage direct-current defencive function, performance；
3) present invention can carry out model ginseng to extra-high voltage direct-current transmission engineering electrical-magnetic model according to actual test environment needs
Number configuration；The model event of corresponding different faults testing requirement according to the defencive function logic of tested protective device, can be determined simultaneously
Hinder relevant parameter, matches to carry out protection test to extra-high voltage direct-current transmission engineering electrical-magnetic model according to defencive function to be measured
It sets, realizes the test under various failure operation modes to DC protection system, test function is comprehensive, as a result reliably；
4) present invention is obtained and is stored by the protection exit action message to tested protective device, is especially recorded with failure
Waveshape is stored, and the calculated load of host computer can be reduced, and is facilitated and subsequent is analyzed at any time this partial data.
To sum up, the present invention can carry out accurate simulation to the fault characteristic of extra-high voltage direct-current transmission engineering complexity, thus
Realize that extra-high voltage direct-current protects system function, the validity test of performance, it is ensured that the operational safety of extra-high voltage direct-current transmission engineering, tool
There is good application prospect.
Detailed description of the invention
Fig. 1 show a kind of extra-high voltage direct-current protection based on the simulation of overall process operation characteristic provided in an embodiment of the present invention
On-the-spot test method flow schematic diagram；
Fig. 2 show a kind of extra-high voltage direct-current based on the simulation of overall process operation characteristic provided in an embodiment of the present invention and keeps the scene intact
The circuit theory schematic diagram that test macro utilizes hardware+software to realize.
Specific embodiment
It is further described below in conjunction with the drawings and specific embodiments.
Embodiment 1
It keeps the scene intact the test of test macro the present embodiment provides a kind of extra-high voltage direct-current based on the simulation of overall process operation characteristic
Method, comprising:
S1 determines fault test type according to the defencive function type of tested protective device；And it is all kinds of according to tested protective device
The function logic of defencive function determines the emulation letter of the corresponding failure relevant parameter of corresponding failure test-types and required output
Number；
S2, for any fault test type, by the corresponding failure relevant parameter of the fault test type, as what is constructed in advance
The input of major loop model of alternating current-direct current and control system equivalent model is based on major loop model of alternating current-direct current and control
System equivalent model processed carries out fault transient simulation calculation, obtains the emulation under the corresponding failure operation mode of fault test type
Operation data；
S3 carries out data pick-up to the simulation run data that S2 is obtained, the emulation exported needed for obtaining according to fault test type
The corresponding each simulation run data of signal；
S4 is respectively processed each simulation run data that S3 is extracted, obtain ac analog, digital quantity, switching value with
And control bus emulates signal, is exported respectively to the corresponding test volume input terminal of tested protective device；
S5, the protection act for obtaining tested protective device exports signal, and stores.
The above-mentioned test process of the present embodiment is intended to simulate practical extra-high voltage direct-current transmission engineering under the various methods of operation
Operation characteristic, and obtain corresponding operation data, as the protection act foundation that all kinds of defencive functions of tested protective device are realized,
To can determine whether under specified fault test type, whether the protection exit signal of tested protective device meets fault test class
Defencive function corresponding to type.Under the premise of having specified fault test type, believed according to the protection exit of tested protective device
Number analyze whether the corresponding defencive function of tested protective device is normally the prior art.
In S1, described major loop model of the alternating current-direct current constructed in advance includes AC system submodel, alternating current filter
Submodel, converter power transformer submodel, valve group submodel, DC filter submodel, smoothing reactor submodel, DC line
And earthing pole submodel and switch submodel；
Each submodel in major loop model of alternating current-direct current carries out model parameter according to practical extra-high voltage direct-current transmission engineering and matches
It sets, including to AC system parameter, alternating current filter type and quantity, DC filter type and quantity, valve group input quantity
It is configured with Ground return/metallic return selection；
The control system equivalent model constructed in advance is for simulating control system in practical extra-high voltage direct-current transmission engineering
Control characteristic.
In S2, control system equivalent model for realizing unlock/lock-in control of valve group, valve pulse generation/ignition control,
The simulation of the DC control systems basic function such as Current limited Control and current/voltage blow-out angle closed-loop control, and control characteristic accords with
Close the operation characteristic of practical extra-high voltage direct-current transmission engineering.
In S3, the corresponding failure relevant parameter of each fault test type includes: that abort situation, fault type and failure continue
Time parameter；Signal needed for defencive function is realized in tested protection includes AC/DC side voltage, AC/DC side electric current, switch position
Set the emulation signal exported needed for determining with control system status signal, S3, that is, each signal needed for determining tested protect, with therefore
Hinder test-types and the tested corresponding point position of defencive function logic.
The input of S4 model failure relevant parameter and the model configuration in S1, allow the invention to based on alternating current-direct current one
Secondary major loop model and control system equivalent model carry out fault transient simulation calculation, to imitate practical extra-high voltage direct-current transmission
Operation characteristic of the engineering under the corresponding failure method of operation, to generate corresponding transient state supplemental characteristic.
In S5, data pick-up is carried out to simulation run data are as follows: according to current failure test-types, extract simulation run number
According to the alternating voltage current data of middle corresponding measuring point position, DC voltage and current data, switching value data and control bus number
According to；
S6 includes: to obtain ac analog to the progress digital-to-analogue conversion of AC voltage/current data and power amplification that extract
Emulate signal；The DC voltage/current data extracted are exported using optical fiber sending module, obtain digital quantity emulation letter
Number；The switching value data extracted is exported using isolation module, obtains switching value emulation signal；Control to extracting
Bus data adapt to the protocol conversion of tested protective device, obtains control bus emulation signal.
Further, after the present embodiment step S7 obtains protection act outlet signal, event is generated according to the signal got
Hinder recording, and then failure wave-recording is stored.Subsequent facilitate extracts stored failure wave-recording, so as at any time to tested guarantor
Protection unit carries out defencive function analysis.It, can according to specified fault test type when test and its corresponding failure relevant parameter
Infer tested theoretical protection exit data of the protective device when defencive function is normal, by theoretical protection exit data with actually obtain
Just whether the protection exit action message or fault recorder data got compare, that is, can determine whether corresponding defencive function
Often.
The present embodiment is kept the scene intact test method based on the extra-high voltage direct-current that overall process operation characteristic is simulated, and it is special to pass through building
High voltage direct current transmission project exchanges a major loop model and control system equivalent model, to the fortune of extra-high voltage direct-current protection system
The overall process operation characteristic of row environment, i.e. extra-high voltage direct-current transmission engineering is simulated, so that the present invention is applied to extra-high straightening
When flowing the on-the-spot test of protective device, the DC protection system defencive function test that can satisfy under a variety of different running methods is needed
It asks, while can ensure that the reliability of the test result to extra-high voltage direct-current protective device defencive function.
Embodiment 2
Inventive concept same as Example 1, the present embodiment are a kind of extra-high voltage direct-current based on the simulation of overall process operation characteristic
Keep the scene intact test device, comprising:
Fault test type and fault parameter configuration module, for determining event according to the defencive function type for being tested protective device
Hinder test-types；And according to the function logic of all kinds of defencive functions of tested protective device, determine that corresponding failure test-types are corresponding
Failure relevant parameter and required output emulation signal；
Fault transient simulation algorithm model, for being directed to any fault test type, by the corresponding failure of fault test type
Relevant parameter, as the input of major loop model of the alternating current-direct current constructed in advance and control system equivalent model, based on friendship
Major loop model of direct current and control system equivalent model carry out fault transient simulation calculation, obtain fault test type pair
Simulation run data under the failure operation mode answered；
Simulation run data extraction module, for carrying out data pick-up to simulation run data, the emulation letter exported needed for obtaining
Number corresponding each simulation run data；
Simulation run data processing module is respectively processed each simulation run data extracted, obtain ac analog,
Digital quantity, switching value and control bus emulate signal, are exported respectively to the corresponding test volume input terminal of tested protective device；
Protection act exports signal acquisition module, and the protection act for obtaining tested protective device exports signal, and stores.
Embodiment 3
Inventive concept identical with previous embodiment 1 and 2, the present embodiment provides a kind of spies based on the simulation of overall process operation characteristic
High voltage direct current keeps the scene intact test macro, including network interface, memory and processor, in which:
Network interface is for during being received and sent messages between other ext nal network elements, signal to be sended and received；
Memory is for storing the computer program instructions that can be run on the processor；
Processor is used for when running the computer program instructions, is executed and is based on overall process operation characteristic described in embodiment 1
The extra-high voltage direct-current of simulation keep the scene intact test method the step of.
Embodiment 4
It is based on identical inventive concept with previous embodiment, is run refering to what is shown in Fig. 2, the present embodiment provides one kind based on overall process
The extra-high voltage direct-current of simulated behavior keeps the scene intact test macro, host computer and slave computer including being connected with each other communication:
Host computer includes the first data-interface, first memory and first processor；First data-interface is for host computer under
Signal transmission between position machine or other ext nal network elements；First memory can be run for storing on the first processor
The number that is obtained from slave computer or other ext nal network elements of computer program instructions, program process data and host computer
According to；
The computer program instructions that the first processor executes include:
Test model construction procedures module is protected, for based on the pass between preset fault test type and failure relevant parameter
Connection relationship, it is primary to the alternating current-direct current constructed in advance using corresponding failure relevant parameter according to the fault test type currently set
Major loop model and control system equivalent model carry out protection test configurations；
Fault transient simulation calculation program module, for based on the alternating current-direct current that model parameter configuration and protection test configurations is completed
Major loop model and control system equivalent model carry out fault transient simulation calculation, and the failure currently set is surveyed
Try the simulation run data under the corresponding failure operation mode of type；
Data extraction module, for based on being associated between preset fault test type and the emulation signal of required output
System, each simulation run data corresponding to the emulation signal in simulation run data, with required output are extracted respectively；
Slave computer includes the second data-interface, second memory and second processor；Second data-interface for slave computer with
Signal transmission between position machine or other ext nal network elements；Second memory is based on storing and can run in second processor
The data that calculation machine program instruction, program process data and slave computer obtain from host computer or other ext nal network elements；
Second data-interface include respectively with the analog output unit of tested protective device connection communication, digital output
Unit, switch amount output unit, control bus signal output unit and protection signal acquisition unit；
The computer program instructions that the second processor executes include:
Data processor module, for handling each simulation run data that host computer exports, to respectively obtain exchange
Analog quantity, DC digital amount, switching value and control bus data, and pass through the analog output list in the second data-interface respectively
Member, digital output unit, switch amount output unit, control bus signal output unit carry out signal output；
Protection exit action message capture program module, for acquiring tested protection by the protection signal acquisition unit
The protection exit action signal of device, and exported by the first data-interface to host computer.
Described major loop model of the alternating current-direct current constructed in advance includes AC system submodel, alternating current filter submodule
It type, converter power transformer submodel, valve group submodel, DC filter submodel, smoothing reactor submodel, DC line and connects
Earth polar submodel and switch submodel；
Each submodel in major loop model of alternating current-direct current carries out model parameter according to practical extra-high voltage direct-current transmission engineering and matches
It sets, including to AC system parameter, alternating current filter type and quantity, DC filter type and quantity, valve group input quantity
It is configured with Ground return/metallic return selection；
The control system equivalent model constructed in advance is for simulating control system in practical extra-high voltage direct-current transmission engineering
Control characteristic.
Incidence relation between the preset fault test type and failure relevant parameter includes, fault test type with
The defencive function and abort situation of incidence relation and each tested protective device between tested protective device defencive function, event
Hinder the incidence relation between type and trouble duration；
Incidence relation between the emulation signal of the preset fault test type and required output is fault test type with
Incidence relation between the point position of each emulation signal needed for tested protection.
In the present embodiment, computer program instructions performed by the first processor of host computer further include: failure wave-recording is raw
At program module, for generating failure wave-recording waveform according to the protection exit action signal from slave computer；Failure generated
Recording Waveform storage is to first memory.It is analyzed convenient for consequent malfunction analysis and the defencive function of tested protective device.
Embodiment 5
It is based on identical inventive concept with previous embodiment, as shown in Fig. 2, the present embodiment provides one kind based on overall process operation spy
Property simulation extra-high voltage direct-current keep the scene intact test macro, host computer and slave computer including being connected with each other communication:
Host computer includes model parameter configuration module, test parameter configuration module, simulation algorithm model, data extraction module,
One data interface module and protection act data memory module, in which:
Major loop model of alternating current-direct current and the DC control system of extra-high voltage direct-current transmission engineering are built in simulation algorithm model
System equivalent model；
User is by model parameter configuration module input model configuration parameter information, according to practical extra-high voltage direct-current transmission engineering
Model parameter configuration is carried out to major loop model of the alternating current-direct current；And preset survey is inputted by test parameter configuration module
Function type and its corresponding fault configuration parameter information are tried, to major loop model of the alternating current-direct current and DC control system
System equivalent model carries out protection test configurations；
Simulation algorithm model utilizes configured major loop model of alternating current-direct current and DC control system equivalent model, carries out phase
It answers the fault transient under the method for operation to emulate, obtains the simulation run number for meeting practical extra-high voltage direct-current transmission engineering operation characteristic
According to；
Data extraction module is according to the incidence relation between preset fault test type and the emulation signal of required output, to imitative
In true operation data, each simulation run data corresponding with the emulation signal of required output, extracted respectively, and then pass through the
One data interface module is exported to slave computer；
Slave computer includes data processing module and the second data interface module, in which:
Second data interface module include respectively with the analog output unit of tested protective device connection communication, digital output
Unit, switch amount output unit, control bus signal output unit and protection signal acquisition unit；
Data processing module receives simulation run data from host computer and handles, and obtains ac analog, DC voltage and current, opens
Pass amount and control bus data, and be transmitted separately to the analog output unit of the second data-interface, digital output unit, open
Measure output unit, control bus signal output unit in pass；Data processing module also passes through protection signal acquisition unit and obtains
The protection act of tested protective device exports signal, is transmitted to host computer through the first data interface module；
The protection act that host computer obtains tested protective device exports signal, is stored in protection act data memory module.
Further, host computer further includes failure wave-recording generation module, and failure wave-recording generation module is received according to host computer
The protection act of the tested protective device arrived exports signal, generates corresponding failure wave-recording waveform, and then be stored in protection act
Data memory module.Subsequent various data analyses can be facilitated.
Major loop model of alternating current-direct current of simulation algorithm model includes AC system model, alternating current filter model, changes
It convertor transformer model, valve group model, DC filter model, smoothing reactor model, DC line and earthing pole model and opens
Close model；User model parameter configuration module input model configuration parameter information includes: AC system parameter, alternating current filter class
Type and quantity, DC filter type and quantity, valve group input quantity and Ground return/metallic return selection, to realize spy
The different running method of high voltage direct current transmission project.
Unlock/lock-in control of the control system equivalent model for realizing valve group, valve pulse generation/ignition control, current limliting
The simulation of the DC control systems basic function such as control and electric current, voltage blow-out angle closed-loop control, and control characteristic meets reality
The operation characteristic of border extra-high voltage direct-current transmission engineering.
The analog output unit of second data interface module, digital output unit, switch amount output unit, control are total
Line signal output unit and protection act information acquisition unit, respectively include the hardware interface for connecting tested protective device.
Refering to what is shown in Fig. 2, data processing module includes at the Power PC processor and FPGA, Power PC of timing synchronization
Reason device receives the simulation run data extracted, outputs this to FPGA；FPGA includes DA TCU transfer control unit, communication interaction list
Member and multiple-channel output control unit；FPGA carries out communication interaction by communication interaction unit and Power PC processor, passes through DA
TCU transfer control unit carries out digital-to-analogue conversion to the alternating voltage current data in simulation run data and obtains ac analog, passes through
Ac analog is emulated and is believed according to Power PC processor specified data type and output time by multiple-channel output control unit
Number and the DC voltage and current, switching value and the control bus data that have extracted, respectively correspond and be transmitted to the second data-interface mould
Analog output unit, digital output unit, switch amount output unit and the control bus signal output unit of block.
In second data interface module, analog output unit includes power amplification circuit, and power amplification circuit receives
After the alternating voltage electric current of FPGA output carries out power amplification, exported as ac analog by hardware interface.
In second data interface module, digital output unit includes optical fiber transmission circuit, and optical fiber transmission circuit is to FPGA
The DC voltage and current of output is handled, and exports digital quantity signal by corresponding hardware interface.
In second data interface module, switch amount output unit includes isolation circuit, and the switching value of FPGA output is through being isolated
After circuit, exported as on-off model by hardware interface.
In second data interface module, control bus signal output unit includes protocol conversion module, protocol conversion module
The control system data of FPGA output are received, and carry out the protocol conversion being adapted with tested protective device to it, agreement is turned
Control bus signal after changing is exported by corresponding hardware interface.
Pass through Ethernet connection communication between host computer and test terminal.
To sum up, the present invention can simulate the operation characteristic of extra-high voltage direct-current transmission engineering stable state and fault transient overall process,
Fault signature of the accurate response extra-high voltage direct-current transmission engineering under different running method, fault type and situation is realized
The on-the-spot test of extra-high voltage direct-current defencive function, performance, it is ensured that the operational safety of extra-high voltage direct-current transmission engineering has good
Application prospect.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The embodiment of the present invention is described in conjunction with attached drawing above, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (15)
- The test method of test macro 1. a kind of extra-high voltage direct-current keeps the scene intact, it is characterized in that: including:S1 determines fault test type according to the defencive function type of tested protective device；And it is all kinds of according to tested protective device The function logic of defencive function determines the emulation letter of the corresponding failure relevant parameter of corresponding failure test-types and required output Number；S2, for any fault test type, by the corresponding failure relevant parameter of the fault test type, as what is constructed in advance The input of major loop model of alternating current-direct current and control system equivalent model is based on major loop model of alternating current-direct current and control System equivalent model processed carries out fault transient simulation calculation, obtains the emulation under the corresponding failure operation mode of fault test type Operation data；S3 carries out data pick-up to the simulation run data that S2 is obtained, the emulation exported needed for obtaining according to fault test type The corresponding each simulation run data of signal；S4 is respectively processed each simulation run data that S3 is extracted, obtain ac analog, digital quantity, switching value with And control bus emulates signal, is exported respectively to the corresponding test volume input terminal of tested protective device；S5, the protection act for obtaining tested protective device exports signal, and stores.
- 2. according to the method described in claim 1, it is characterized in that: in S1, described major loop mould of the alternating current-direct current constructed in advance Type includes AC system submodel, alternating current filter submodel, converter power transformer submodel, valve group submodel, DC filter Submodel, smoothing reactor submodel, DC line and earthing pole submodel and switch submodel；Each submodel in major loop model of alternating current-direct current carries out model parameter according to practical extra-high voltage direct-current transmission engineering and matches It sets, including to AC system parameter, alternating current filter type and quantity, DC filter type and quantity, valve group input quantity It is configured with Ground return/metallic return selection；The control system equivalent model constructed in advance is for simulating control system in practical extra-high voltage direct-current transmission engineering Control characteristic.
- 3. according to the method described in claim 1, it is characterized in that: in S3, the corresponding failure relevant parameter of each fault test type It include: abort situation, fault type and trouble duration parameter；Being tested signal needed for defencive function is realized in protection includes AC/DC side voltage, AC/DC side electric current, the position of the switch and control system status signal, the emulation letter that S1 is exported needed for determining Number, that is, each signal needed for determining tested protect, corresponding with fault test type and tested defencive function logic point position.
- 4. according to the method described in claim 3, it is characterized in that: carrying out data pick-up to simulation run data in S3 are as follows: according to Current failure test-types extract the alternating voltage current data of corresponding measuring point position, direct current piezoelectricity in simulation run data Flow data, switching value data and control bus data；S4 includes: to obtain ac analog to the progress digital-to-analogue conversion of AC voltage/current data and power amplification that extract Emulate signal；The DC voltage/current data extracted are exported using optical fiber sending module, obtain digital quantity emulation letter Number；The switching value data extracted is exported using isolation module, obtains switching value emulation signal；Control to extracting Bus data adapt to the protocol conversion of tested protective device, obtains control bus emulation signal.
- 5. according to the method described in claim 1, it is characterized in that: S5 obtain protection act outlet signal after, according to what is got Signal generates failure wave-recording, and then stores to failure wave-recording.
- The test device 6. a kind of extra-high voltage direct-current keeps the scene intact, it is characterized in that: including:Fault test type and fault parameter configuration module, for determining event according to the defencive function type for being tested protective device Hinder test-types；And according to the function logic of all kinds of defencive functions of tested protective device, determine that corresponding failure test-types are corresponding Failure relevant parameter and required output emulation signal；Fault transient simulation algorithm model, for being directed to any fault test type, by the corresponding failure of fault test type Relevant parameter, as the input of major loop model of the alternating current-direct current constructed in advance and control system equivalent model, based on friendship Major loop model of direct current and control system equivalent model carry out fault transient simulation calculation, obtain fault test type pair Simulation run data under the failure operation mode answered；Simulation run data extraction module, for carrying out data pick-up to simulation run data, the emulation letter exported needed for obtaining Number corresponding each simulation run data；Simulation run data processing module is respectively processed each simulation run data extracted, obtain ac analog, Digital quantity, switching value and control bus emulate signal, are exported respectively to the corresponding test volume input terminal of tested protective device；Protection act exports signal acquisition module, and the protection act for obtaining tested protective device exports signal, and stores.
- 7. a kind of kept the scene intact the system of test method based on any one of claim 1 to 5 extra-high voltage direct-current, feature It is: including network interface, memory and processor, in which:Network interface is for during being received and sent messages between other ext nal network elements, signal to be sended and received；Memory is for storing the computer program instructions that can be run on the processor；Processor is used for when running the computer program instructions, and perform claim requires any one of 1 to 5 extra-high voltage direct-current The step of test method that keeps the scene intact.
- The test macro 8. a kind of extra-high voltage direct-current keeps the scene intact, it is characterized in that: including host computer and the bottom for being connected with each other communication Machine:Host computer includes the first data-interface, first memory and first processor；First data-interface is for host computer under Signal transmission between position machine or other ext nal network elements；First memory can be run for storing on the first processor The number that is obtained from slave computer or other ext nal network elements of computer program instructions, program process data and host computer According to；The computer program instructions that the first processor executes include:Test model construction procedures module is protected, for based on the pass between preset fault test type and failure relevant parameter Connection relationship, it is primary to the alternating current-direct current constructed in advance using corresponding failure relevant parameter according to the fault test type currently set Major loop model and control system equivalent model carry out protection test configurations；Fault transient simulation calculation program module, for based on major loop model of alternating current-direct current and control that configuration is completed System equivalent model carries out fault transient simulation calculation, the corresponding failure operation side of fault test type currently set Simulation run data under formula；And data extraction module, for based on being associated between preset fault test type and the emulation signal of required output System, each simulation run data corresponding to the emulation signal in simulation run data, with required output are extracted respectively；Slave computer includes the second data-interface, second memory and second processor；Second data-interface for slave computer with Signal transmission between position machine or other ext nal network elements；Second memory is based on storing and can run in second processor The data that calculation machine program instruction, program process data and slave computer obtain from host computer or other ext nal network elements；Second data-interface include respectively with the analog output unit of tested protective device connection communication, digital output Unit, switch amount output unit, control bus signal output unit and protection signal acquisition unit；The computer program instructions that the second processor executes include:Data processor module, for handling each simulation run data that host computer exports, to respectively obtain exchange Analog quantity, DC digital amount, switching value and control bus data, and pass through the analog output list in the second data-interface respectively Member, digital output unit, switch amount output unit, control bus signal output unit carry out signal output；Protection exit action message capture program module, for acquiring tested protection by the protection signal acquisition unit The protection exit action signal of device, and exported by the first data-interface to host computer.
- 9. extra-high voltage direct-current keeps the scene intact test macro according to claim 8, it is characterized in that:Described major loop model of the alternating current-direct current constructed in advance includes AC system submodel, alternating current filter submodel, changes Convertor transformer submodel, valve group submodel, DC filter submodel, smoothing reactor submodel, DC line and earthing pole Submodel and switch submodel；Each submodel in major loop model of alternating current-direct current carries out model parameter according to practical extra-high voltage direct-current transmission engineering and matches It sets, including to AC system parameter, alternating current filter type and quantity, DC filter type and quantity, valve group input quantity It is configured with Ground return/metallic return selection；The control system equivalent model constructed in advance is for simulating control system in practical extra-high voltage direct-current transmission engineering Control characteristic.
- 10. extra-high voltage direct-current keeps the scene intact test macro according to claim 8, it is characterized in that: the preset failure is surveyed Incidence relation between examination type and failure relevant parameter includes, between fault test type and tested protective device defencive function Incidence relation and each tested protective device defencive function and abort situation, fault type and trouble duration between Incidence relation；Incidence relation between the emulation signal of the preset fault test type and required output is fault test type with Incidence relation between the point position of each emulation signal needed for tested protection.
- 11. extra-high voltage direct-current keeps the scene intact test macro according to claim 8, it is characterized in that: the first of host computer is handled Computer program instructions performed by device further include: failure wave-recording generates program module, for according to the protection from slave computer It exports action signal and generates failure wave-recording waveform；Failure wave-recording Waveform storage generated is to first memory.
- The test macro 12. a kind of extra-high voltage direct-current keeps the scene intact, it is characterized in that: including host computer and the bottom for being connected with each other communication Machine:Host computer includes model parameter configuration module, test parameter configuration module, simulation algorithm model, data extraction module, One data interface module and protection act data memory module, in which:Major loop model of alternating current-direct current and the DC control system of extra-high voltage direct-current transmission engineering are built in simulation algorithm model System equivalent model；User is by model parameter configuration module input model configuration parameter information, according to practical extra-high voltage direct-current transmission engineering Model parameter configuration is carried out to major loop model of the alternating current-direct current；And preset survey is inputted by test parameter configuration module Function type and its corresponding fault configuration parameter information are tried, to major loop model of the alternating current-direct current and DC control system System equivalent model carries out protection test configurations；Simulation algorithm model utilizes configured major loop model of alternating current-direct current and DC control system equivalent model, carries out phase It answers the fault transient under the method for operation to emulate, obtains the simulation run number for meeting practical extra-high voltage direct-current transmission engineering operation characteristic According to；Data extraction module is according to the incidence relation between preset fault test type and the emulation signal of required output, to imitative In true operation data, each simulation run data corresponding with the emulation signal of required output, extracted respectively, and then pass through the One data interface module is exported to slave computer；Slave computer includes data processing module and the second data interface module, in which:Second data interface module include respectively with the analog output unit of tested protective device connection communication, digital output Unit, switch amount output unit, control bus signal output unit and protection signal acquisition unit；Data processing module receives simulation run data from host computer and handles, and obtains ac analog, DC voltage and current, opens Pass amount and control bus data, and be transmitted separately to the analog output unit of the second data-interface, digital output unit, open Measure output unit, control bus signal output unit in pass；Data processing module also passes through protection signal acquisition unit and obtains The protection act of tested protective device exports signal, is transmitted to host computer through the first data interface module；The protection act that host computer obtains tested protective device exports signal, is stored in protection act data memory module.
- 13. extra-high voltage direct-current keeps the scene intact test macro according to claim 12, it is characterized in that: host computer further includes failure The protection act of recording generation module, the tested protective device that failure wave-recording generation module is received according to host computer goes out message Number, corresponding failure wave-recording waveform is generated, and then be stored in protection act data memory module.
- 14. extra-high voltage direct-current keeps the scene intact test macro according to claim 12, it is characterized in that: data processing module includes The Power PC processor and FPGA of timing synchronization, Power PC processor receives the simulation run data extracted, its is defeated Out to FPGA；FPGA includes DA TCU transfer control unit, communication interaction unit and multiple-channel output control unit；FPGA is handed over by communication Mutual unit and Power PC processor carry out communication interaction, by DA TCU transfer control unit to the alternating current in simulation run data Piezoelectricity flow data carries out digital-to-analogue conversion and obtains ac analog, is referred to by multiple-channel output control unit according to Power PC processor Fixed data type and output time, by ac analog emulate signal and the DC voltage and current extracted, switching value and Control bus data respectively correspond the analog output unit for being transmitted to the second data interface module, digital output unit, open Measure output unit and control bus signal output unit in pass.
- 15. extra-high voltage direct-current keeps the scene intact test macro according to claim 12, it is characterized in that: the second data interface module In:Analog output unit includes power amplification circuit, and the alternating voltage electric current that power amplification circuit receives FPGA output carries out After power amplification, exported as ac analog by hardware interface；Digital output unit includes optical fiber transmission circuit, at the DC voltage and current that optical fiber transmission circuit exports FPGA Reason, and then exported as digital quantity signal by hardware interface；Switch amount output unit includes isolation circuit, and the switching value of FPGA output is logical as on-off model after isolation circuit Cross hardware interface output；Control bus signal output unit includes protocol conversion module, and protocol conversion module receives the control bus number of FPGA output According to, and the protocol conversion being adapted with tested protective device is carried out to it, the control bus signal after protocol conversion is passed through into phase The hardware interface output answered.
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| CN113515838A (en) * | 2021-04-09 | 2021-10-19 | 中国南方电网有限责任公司超高压输电公司梧州局 | Direct current system modeling simulation method and device, computer equipment and storage medium |
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