CN110376919A - A kind of power distribution network information physical system joint time stimulatiom method and system - Google Patents
A kind of power distribution network information physical system joint time stimulatiom method and system Download PDFInfo
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Abstract
The present invention provides a kind of power distribution network information physical systems to combine time stimulatiom method and system, comprising: the time series data of the power distribution network based on acquisition carries out physical simulation using the electrical physical system model of the power distribution network pre-established in the physics sampling period；When reaching the sampling period of communication network, the communication data based on acquisition communicates emulation using the power distribution network information traffic model pre-established；Splice physical simulation and information communication simulation as a result, obtaining power distribution network information physical system associative simulation result.This method and system realize power distribution network information physical system joint and solve Computational frame, reduce the coupling synchronous error between information communication and electrical physical simulation, solves the problems, such as online, timing associative simulation under the non real-time scene in power distribution network information physical system two emulation domains.
Description
Technical field
The invention belongs to power distribution network information physical system technical fields, and in particular to a kind of power distribution network information physical system connection
Close time stimulatiom method and system.
Background technique
The depth integration and real-time, interactive of information communication system and physical system, show in power distribution network information physical system
Dynamic process develop complicated, across space failure it is chain propagate, the new features such as risk probability sharply rises, and face information attack,
A series of new problems such as communication link obstruction, combined failure evolution.Conventional electrical distribution network simulation is absorbed in power distribution network
System describes electrical system Continuous Time Response model with one group of differential algebraic equations, and using explicit integration or implicit integration etc.
Numerical integration algorithm is solved, and relatively accurate estimation is carried out to electrical system current state by discrete time step, to obtain
Obtain electrical system time domain response waveform.Information communication system belongs to discrete system, using discrete state model to the discrete ginseng of network
Number converts specific event team for complicated communication process if length of data queue, data packet and discrete event are described
Column, and simulated by discrete events simulation tool.As it can be seen that conventional electrical distribution network simulation and information communication simulation are in theoretical and side
It is substantially isolated in method, distribution physical system is time-varying system, and electrical quantity flows through electricity in the form of voltage, electric current, power etc.
Power node and branch, information communication system are then discrete systems, and information change is triggered by discrete event, existing emulation mode master
If based on the associative simulation side between mature commercial power real-time simulator RTLAB, RTDS and communication simulation software OPNET
Case still belongs to blank for online, the time stimulatiom scheme under the non real-time scene of power distribution network at present.
Summary of the invention
To overcome the shortcomings of that online, time stimulatiom scheme of the above-mentioned prior art under non real-time scene lack, the present invention
It is proposed a kind of power distribution network information physical system joint time stimulatiom method and system.This method and system propose proposition based on connection
The power distribution network information physical system for closing Solving mechanism solves Computational frame, and devises the emulation synchronous interaction synchronous based on triggering
Mechanism, by using the joint of the electrical physical simulation algorithm of power distribution network and information communication discrete events simulation, and design and simulation is same
Step mechanism and switching method are realized information flow and the flow integrated calculating of electrical physical energy of distribution network communication system, are solved
Power distribution network information physical system combines the problem of imitative method missing, under the stable situation for realizing power distribution network information physical system
Online, time stimulatiom solves.
Realize solution used by above-mentioned purpose are as follows:
A kind of power distribution network information physical system joint time stimulatiom method, it is improved in that including:
The time series data of power distribution network based on acquisition, in the physics sampling period using the electrical physics of power distribution network pre-established
System model carries out physical simulation；
When reaching the sampling period of communication network, the communication data based on acquisition is believed using the power distribution network pre-established
Message communication model communicates emulation；
Splice physical simulation and information communication simulation as a result, obtaining power distribution network information physical system associative simulation result.
First optimal technical scheme provided by the invention, it is improved in that the power distribution network based on acquisition when
Ordinal number evidence carries out physical simulation using the electrical physical system model of the power distribution network pre-established in the physics sampling period, comprising:
S101: same from the acquisition of electrical power distribution automatization system, power information acquisition system and production management system based on markers
When discontinuity surface power distribution network time series data；
S102: based on the time series data and the electrical physical system model of power distribution network pre-established, power distribution network electricity is carried out
The Load flow calculation of gas physical system；
S103: judge whether Load flow calculation restrains: if so, executing S104；Otherwise, the electrical physics of the power distribution network is adjusted
The line impedance and load parameter of system model, execute S102 again；
Physical simulation result is recorded on the event axis comprising timing by S104 in the form of physical simulation data packet.
Wherein, the time series data include: the status data switched in power distribution network, the active and idle data of load and
There is the node voltage current data of measuring point.
Second optimal technical scheme provided by the invention judges whether Load flow calculation restrains it is improved in that described,
Include:
Node in the electrical physical system model of optional power distribution network judges in the trend iterative calculation number of setting, described
Node voltage the voltage calculated twice in succession difference whether within a preset range: if so, the node voltage calculate receive
It holds back, otherwise the node voltage calculating does not restrain；
Judge to calculate not convergent node with the presence or absence of node voltage in the electrical physical system model of power distribution network: if so,
Load flow calculation is not restrained；Otherwise Load flow calculation is restrained.
Third optimal technical scheme provided by the invention, it is improved in that the electrical physical system mould of the power distribution network
The foundation of type, comprising:
Based on power distribution network topological structure, the electrical physical system mould of power distribution network is established using modal equation and power balance equation
Type；
The modal equation is shown below:
IB=YBUB
In formula, IBIndicate branch current vector, YBIndicate admittance matrix, UBIndicate node voltage vector；
The power balance equation is shown below:
In formula, PiIndicate electrical physical node i injection active power, QiIndicate electrical physical node i injection reactive power；
UiIndicate the voltage of electrical physical node i, UjIndicate the voltage of electrical physical node j；GijIt indicates between electrical physical node i, j
Conductance；BijIndicate the susceptance between electrical physical node i, j；δijIndicate the phase angle difference between electrical physical node i, j.
4th optimal technical scheme provided by the invention, it is improved in that the communication data based on acquisition, is adopted
Emulation is communicated with the power distribution network information traffic model pre-established, comprising:
The communication data that will acquire brings the power distribution network information traffic model pre-established into, logical to information with finite automata
Communication network communicates emulation；
Information communication simulation result is recorded on the event axis in the form of communication simulation data packet；
The communication data includes: the status data that is switched in power distribution network, have the node voltage current data of measuring point with
And transformer state data.
5th optimal technical scheme provided by the invention, it is improved in that described using the power distribution network pre-established
After information traffic model communicates emulation, and based on simulation time splicing physical simulation and information communication simulation result
Before, further includes:
Whether judge in information communication simulation result comprising control signal:
If so, according to the control signal update power distribution network topological structure and operation data, and according to updated distribution
Net topology structure and operation data carry out physical simulation again；
Otherwise, it is transferred to and physical simulation and information communication simulation result is spliced based on simulation time.
6th optimal technical scheme provided by the invention, it is improved in that the power distribution network information traffic model
It establishes, comprising:
Communication network based on power distribution network establishes power distribution network information traffic model using nodal analysis method and network model；
The nodal analysis method is shown below:
NLlm=(Wlm,Rblm,RBlm), l ∈ [1, n], m ∈ [1, n]
In formula, n indicates communication network node total number, NLlmFor a multi-component system, WlmIndicate communication network node l and m
Between bandwidth, RblmIndicate the transmission rate between communication network node l and m, RBlmIt indicates between communication network node l and m
Baud rate, as l=m, NLlmFor communication node, as l ≠ m, NLlmIt is communication link；
The network model is shown below:
A is by NLlmThe adjacency matrix for the n × n that (l, m ∈ [1, n]) is constituted, works as NLlm≠ 0, indicate communication network section
Point l and node m are directly connected to, NLlmIndicate the performance of link lm；Work as NLlm=0, it indicates not to be directly connected between lm.
7th optimal technical scheme provided by the invention, it is improved in that the splicing physical simulation and information are logical
Believe simulation result, obtain power distribution network information physical system associative simulation result, comprising:
Physical simulation data packet and communication simulation data packet are read according to the time respectively from the event axis；
Splice the physical simulation data packet and communication simulation data packet, obtains power distribution network information physical system associative simulation
As a result.
A kind of power distribution network information physical system joint timing simulation system, it is improved in that, comprising: electrical physics
Emulation module, information communication simulation module and data synthesis module；
The electrical physical simulation module is adopted for the time series data of the power distribution network based on acquisition in the physics sampling period
Physical simulation is carried out with the electrical physical system model of the power distribution network pre-established；
The information communication simulation module, for when reach communication network sampling period when, the communication number based on acquisition
According to communicating emulation using the power distribution network information traffic model pre-established；
The Data Synthesis module, for splicing physical simulation and information communication simulation as a result, obtaining power distribution network information object
Manage system combined simulation result.
8th optimal technical scheme provided by the invention, it is improved in that the electrical physical simulation module includes:
Time series data acquisition unit, Load flow calculation unit, convergence judging unit and physical data recording unit；
The time series data acquisition unit, for based on markers from electrical power distribution automatization system, power information acquisition system and
The power distribution network time series data of discontinuity surface when production management system acquires same；
The Load flow calculation unit, for based on the time series data and the electrical physical system mould of power distribution network pre-established
Type carries out the Load flow calculation of the electrical physical system of power distribution network；
The convergence judging unit, for judging whether Load flow calculation restrains: if so, calling physical data record
Member；Otherwise Load flow calculation unit is called；
Physical data recording unit, for physical simulation result is recorded in the form of physical simulation data packet comprising when
On the event axis of sequence；
Wherein, the time series data include: the status data switched in power distribution network, the active and idle data of load and
There is the node voltage current data of measuring point.
9th optimal technical scheme provided by the invention, it is improved in that the information communication simulation module includes:
Finite automata simulation unit and communication data recording unit；
The finite automata simulation unit, it is logical that the communication data for will acquire brings the power distribution network information pre-established into
Believe model, emulation is communicated to communication network with finite automata；
The communication data recording unit, for recording information communication simulation result in the form of communication simulation data packet
On the event axis；
The communication data includes: the status data that is switched in power distribution network, have the node voltage current data of measuring point with
And transformer state data.
Tenth optimal technical scheme provided by the invention, it is improved in that the Data Synthesis module includes: data
Reading unit and data concatenation unit；
The data-reading unit, for reading physical simulation data packet according to the time respectively from the event axis and leading to
Letter emulation data packet；
The data concatenation unit obtains distribution for splicing the physical simulation data packet and communication simulation data packet
Net information physical system associative simulation result.
Compared with the immediate prior art, the device have the advantages that as follows:
A kind of power distribution network information physical system proposed by the present invention combines time stimulatiom method and system, matching based on acquisition
The time series data of power grid carries out physics using the electrical physical system model of the power distribution network pre-established in the physics sampling period and imitates
Very；When reaching the sampling period of communication network, the communication data based on acquisition is communicated using the power distribution network information pre-established
Model communicates emulation；Final splicing physical simulation and information communication simulation are as a result, obtain power distribution network information physical system
System associative simulation solves Computational frame as a result, realizing power distribution network information physical system joint, reduces information communication and electrical object
Coupling synchronous error between reason emulation solves under the non real-time scene in power distribution network information physical system two emulation domains
Online, timing associative simulation problem.
Detailed description of the invention
Fig. 1 is that a kind of power distribution network information physical system provided by the invention combines time stimulatiom method flow schematic diagram；
Fig. 2 is that a kind of power distribution network information physical system joint time stimulatiom method basic calculating frame provided by the invention shows
It is intended to；
Fig. 3 is that a kind of power distribution network information physical system provided by the invention combines the signal of time stimulatiom method detailed process
Figure；
Fig. 4 is that a kind of power distribution network information physical system provided by the invention is combined in time stimulatiom method based on triggering synchronization
Synchronous method schematic diagram；
Fig. 5 is that a kind of power distribution network information physical system provided by the invention combines the signal of timing simulation system basic structure
Figure；
Fig. 6 is that a kind of power distribution network information physical system provided by the invention combines the signal of timing simulation system detailed construction
Figure.
Specific embodiment
A specific embodiment of the invention is described in further detail with reference to the accompanying drawing.
Embodiment 1:
A kind of power distribution network information physical system provided by the invention combines time stimulatiom method flow schematic diagram such as Fig. 1 institute
Show, comprising:
1, a kind of power distribution network information physical system combines time stimulatiom method characterized by comprising
Step 1: the time series data of the power distribution network based on acquisition, in the physics sampling period using the power distribution network electricity pre-established
Gas physical system model carries out physical simulation；
Step 2: when reaching the sampling period of communication network, the communication data based on acquisition is matched using what is pre-established
Electric network information traffic model communicates emulation；
Step 3: splicing physical simulation and information communication simulation are as a result, obtain power distribution network information physical system associative simulation knot
Fruit.
Specifically, the present invention provides a kind of power distribution network information physical systems to combine time stimulatiom method, initially sets up and match
Node, the network model of the electrical physical system model of power grid and information communication；Secondly, the time series data of power distribution network moment t is read,
Physical simulation is carried out to power distribution network physical network, i.e. progress Load flow calculation discriminates whether adopting to communication network after calculating convergence
Sample cycle T is transferred to information communication simulation subsystem and carries out simulation calculation, pass through finite automaton if reaching communication Harvest time T
Machine communicates time emulation, synchronous using the emulation based on event-order serie between the communication of power distribution network information and electrical physics
Method.After the two calculates, inter-stitched data realize the whole network emulation of the electrical physics of power distribution network and information communication.Then
The time series data for reading next moment t+1, is calculated, and by circulation, realizes that power distribution network information physical system combines timing
Emulation.
Joint time stimulatiom method basic calculating frame such as Fig. 2 institute of power distribution network information physical system in the invention patent
Show, by the way that power distribution network information physical system is decomposed into the electrical physical system of power distribution network and power distribution network information two subsystems of communication
System, is modeled, and electrical system solver is then respectively adopted and information communication solver carries out joint solution, centre uses base
Synchronous (as shown in Figure 4) is interacted in the synchronous synchronous method of triggering, the two is finally subjected to Data Synthesis, as power distribution network
Information physical system the whole network simulation result.Specific step is as shown in figure 3, be described in detail as follows:
Step 101: establishing the model of power distribution network information physical system, mainly include the electrical physical model of power distribution network, information
Traffic model, i.e. physics subsystem and communication subsystem.Wherein, the electrical physical model of power distribution network is flat using modal equation and power
Weigh equation Modeling:
In formula, IBFor branch current, YBFor admittance matrix, UBFor node voltage；Pi、QiRespectively electrical physical node i, j
Injecting power, Ui、UjThe voltage of respectively electrical physical node i, j；GijIndicate the conductance between electrical physical node i, j；Bij
Indicate the susceptance between electrical physical node i, j；δijTo indicate the phase angle difference between electrical physical node i, j.
Power distribution network information traffic model carries out modeling characterization using nodal analysis method and network model:
In formula, NLlmFor a multi-component system；WlmIndicate the bandwidth between communication network node l and m；RblmIndicate communication network
Transmission rate between network node l and m；RBlmIndicate the baud rate between communication network node l and m.As l=m, NLlmFor
Communication node；The NL as l ≠ mlmIt is communication link.A is by NLlmThe adjacency matrix for the n × n that (l, m ∈ [1, n]) is constituted,
N is the interstitial content of communications network system, works as NLlm≠ 0, indicate that communication network node l and node m is directly connected to, NLlmIt indicates
The performance of link lm；Work as NLlm=0, it indicates not to be directly connected between lm.
Step 102: reading the time series data of moment t, including from electrical power distribution automatization system, power information acquisition system, life
Produce the online data in management system PMS.Guarantee data discontinuity surface when same by markers.Wherein, time series data includes: to match
The active and idle data of the status data, load that are switched in power grid and the node voltage current data for having measuring point.
Step 103: carrying out the Load flow calculation of the electrical physical system of power distribution network, i.e., carried out based on the electrical physical model of power distribution network
Emulation.Distribution power system load flow calculation is calculated using traditional Newton-Raphson method.
Step 104: judging whether to restrain, if do not restrained, modify parameter, be again introduced into step 3 and calculated；If
Convergence is then transferred to step 105.Wherein, the parameter of modification includes the line impedance and load of the electrical physical system model of power distribution network
Parameter.
Convergent decision condition are as follows:
Wherein,For voltage value of any node i in power distribution network in current calculation times k, Ui (k-1)To be saved in power distribution network
Voltage value of the point i when calculating for kth -1 time, ε are the convergency value (such as 0.00001) of setting.I.e. voltage value difference is sufficient twice for front and back
Enough hours, determine convergence.Wherein, k should be less than the number of iterations maximum value kmax of setting.
Specific convergent decision condition are as follows: the node in the electrical physical system model of optional power distribution network judges the tide of setting
Stream iterative calculation number kmax in, the node voltage the voltage calculated twice in succession difference whether in preset range ε: if
It is that then the node voltage calculates convergence, otherwise node voltage calculating does not restrain；
Judge to calculate not convergent node with the presence or absence of node voltage in the electrical physical system model of power distribution network: if so,
Load flow calculation is not restrained；Otherwise Load flow calculation is restrained.I.e. all node voltage calculating all restrain, and just think that Load flow calculation is restrained.
Step 105: judging whether the sampling period to communication, if reaching sampling period T, be transferred to step 106 progress
Information communication simulation exports Simulation result data, and read the data of subsequent time t+1 if not up to using cycle T,
Repeat step 2；
Step 106: reaching information communication system sampling period T, then trigger communication simulation solver, communication simulation solver
Using classical finite automata.Synchronization mechanism is triggered as shown in figure 4, working as the data after one time step emulation of physical simulation
It contracts for fixed output quotas after life, is recorded on virtual event axis, wait sampling period T, after reaching the sampling period, trigger information communication simulation,
Emulation meter is being carried out by the data for the same section for having the event axis of precedence relationship to realize that information communication and electrical physics are directed to
It calculates, to guarantee the synchronisation between two emulation solvers.
Step 107: receiving and parse data packet, simulation calculation is carried out to communication network using finite automata.
Wherein, data packet include: the status data switched in power distribution network, the node voltage current data for having measuring point and
Transformer state data.
Step 108: after obtaining information communication simulation result, judge whether comprising control signal inside these results, if
Comprising controlling signal, in step 103, by updating network topology and operation data, cycle calculations again.
Step 109: electrical physics and information communicate two solvers and all complete after calculating, and read the emulation knot on event axis
Fruit can pass through data by the spliced result of data up to whole calculation result datas of power distribution network information communication system
Splicing, the simulation result of t at the time of obtaining complete.
Step 110: reading the data of next moment t+1, be transferred to step 102, cycle calculations, to obtain the t+1 moment
The simulation result of power distribution network information physical system.By the circulation of timing, the time stimulatiom of power distribution network information physical system is realized.
Embodiment 2:
Based on the same inventive concept, the present invention also provides a kind of power distribution network information physical systems to combine time stimulatiom system
System is weighed since to combine with power distribution network information physical system time stimulatiom method similar for the principle that these equipment solve technical problem
Multiple place repeats no more.
The system basic structure is as shown in Figure 5, comprising: electrical physical simulation module, information communication simulation module and data
Synthesis module；
Wherein, electrical physical simulation module is adopted for the time series data of the power distribution network based on acquisition in the physics sampling period
Physical simulation is carried out with the electrical physical system model of the power distribution network pre-established；
Information communication simulation module, for when reaching the sampling period of communication network, the communication data based on acquisition to be adopted
Emulation is communicated with the power distribution network information traffic model pre-established；
Data Synthesis module, for splicing physical simulation and information communication simulation as a result, obtaining power distribution network information physical system
System associative simulation result.
It is as shown in Figure 6 that power distribution network information physical system combines timing simulation system detailed construction.
Wherein, electrical physical simulation module includes: time series data acquisition unit, Load flow calculation unit, convergence judging unit
With physical data recording unit；
Time series data acquisition unit, for being based on markers from electrical power distribution automatization system, power information acquisition system and production
The power distribution network time series data of discontinuity surface when management system acquires same；
Load flow calculation unit, for carrying out based on time series data and the electrical physical system model of power distribution network pre-established
The Load flow calculation of the electrical physical system of power distribution network；
Judging unit is restrained, for judging whether Load flow calculation restrains: if so, calling physical data recording unit；It is no
Then call Load flow calculation unit；
Physical data recording unit, for physical simulation result is recorded in the form of physical simulation data packet comprising when
On the event axis of sequence；
Wherein, time series data includes: the status data switched in power distribution network, the active and idle data of load and the amount of having
The node voltage current data of measuring point.
Wherein, convergence judging unit includes node judgment sub-unit and the whole network judgment sub-unit；
Node judgment sub-unit judges the trend of setting for the node in the electrical physical system model of optional power distribution network
Iterate to calculate number in, node voltage the voltage calculated twice in succession difference whether within a preset range: if so, node
Voltage calculates convergence, and otherwise node voltage calculating does not restrain；
The whole network judgment sub-unit calculates not in the electrical physical system model of power distribution network with the presence or absence of node voltage for judging
Convergent node: if so, Load flow calculation is not restrained；Otherwise Load flow calculation is restrained.
Wherein, power distribution network information physical system joint timing simulation system further includes for establishing the electrical department of physics of power distribution network
The physical modeling module of system model；
Physical modeling module is based on power distribution network topological structure, establishes power distribution network using modal equation and power balance equation
Electrical physical system model.
Wherein, information communication simulation module includes: finite automata simulation unit and communication data recording unit；
Finite automata simulation unit, the communication data for will acquire bring the power distribution network information communication mould pre-established into
Type communicates emulation to communication network with finite automata；
Communication data recording unit, for information communication simulation result to be recorded in thing in the form of communication simulation data packet
On part axis；
Communication data includes: the status data switched in power distribution network, the node voltage current data and change that have measuring point
Depressor status data.
Wherein, power distribution network information physical system joint timing simulation system further includes control signal disposition module；
It controls signal and disposes module, for whether judging in information communication simulation result comprising control signal:
If so, according to control signal update power distribution network topological structure and operation data, and opened up according to updated power distribution network
Structure and operation data are flutterred, carries out physical simulation again；
Otherwise, Data Synthesis module is called.
Wherein, power distribution network information physical system joint timing simulation system further includes for establishing power distribution network information communication mould
The communication modeling module of type；
Modeling module is communicated, the communication network based on power distribution network establishes power distribution network letter using nodal analysis method and network model
Message communication model.
Wherein, Data Synthesis module includes: data-reading unit and data concatenation unit；
Data-reading unit, for reading physical simulation data packet and communication simulation number according to the time respectively from event axis
According to packet；
Data concatenation unit obtains power distribution network information object for splicing physical simulation data packet and communication simulation data packet
Manage system combined simulation result.
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.
Finally it should be noted that: above embodiments are merely to illustrate the technical solution of the application rather than to its protection scopes
Limitation, although the application is described in detail referring to above-described embodiment, those of ordinary skill in the art should
Understand: those skilled in the art read the specific embodiment of application can still be carried out after the application various changes, modification or
Person's equivalent replacement, but these changes, modification or equivalent replacement, are applying within pending claims.
Claims (12)
1. a kind of power distribution network information physical system combines time stimulatiom method characterized by comprising
The time series data of power distribution network based on acquisition, in the physics sampling period using the electrical physical system of power distribution network pre-established
Model carries out physical simulation；
When reaching the sampling period of communication network, the communication data based on acquisition is logical using the power distribution network information pre-established
Letter model communicates emulation；
Splice physical simulation and information communication simulation as a result, obtaining power distribution network information physical system associative simulation result.
2. the method as described in claim 1, which is characterized in that the time series data of the power distribution network based on acquisition, in physics
Sampling period carries out physical simulation using the electrical physical system model of the power distribution network pre-established, comprising:
S101: the same time is acquired from electrical power distribution automatization system, power information acquisition system and production management system based on markers
The power distribution network time series data of section；
S102: based on the time series data and the electrical physical system model of power distribution network pre-established, the electrical object of power distribution network is carried out
The Load flow calculation of reason system；
S103: judge whether Load flow calculation restrains: if so, executing S104；Otherwise, the electrical physical system of the power distribution network is adjusted
The line impedance and load parameter of model, execute S102 again；
Physical simulation result is recorded on the event axis comprising timing by S104 in the form of physical simulation data packet；
Wherein, the time series data includes: the status data switched in power distribution network, the active and idle data of load and the amount of having
The node voltage current data of measuring point.
3. method according to claim 2, which is characterized in that described to judge whether Load flow calculation restrains, comprising:
Node in the electrical physical system model of optional power distribution network judges in the trend iterative calculation number of setting, the node
Voltage the voltage calculated twice in succession difference whether within a preset range: if so, the node voltage calculate convergence, it is no
Then the node voltage calculating does not restrain；
Judge to calculate not convergent node with the presence or absence of node voltage in the electrical physical system model of power distribution network: if so, trend
Calculating does not restrain；Otherwise Load flow calculation is restrained.
4. the method as described in claim 1, which is characterized in that the foundation of the electrical physical system model of power distribution network, comprising:
Based on power distribution network topological structure, the electrical physical system model of power distribution network is established using modal equation and power balance equation；
The modal equation is shown below:
IB=YBUB
In formula, IBIndicate branch current vector, YBIndicate admittance matrix, UBIndicate node voltage vector；
The power balance equation is shown below:
In formula, PiIndicate electrical physical node i injection active power, QiIndicate electrical physical node i injection reactive power；UiTable
Show the voltage of electrical physical node i, UjIndicate the voltage of electrical physical node j；GijIndicate the electricity between electrical physical node i, j
It leads；BijIndicate the susceptance between electrical physical node i, j；δijIndicate the phase angle difference between electrical physical node i, j.
5. method according to claim 2, which is characterized in that the communication data based on acquisition, using what is pre-established
Power distribution network information traffic model communicates emulation, comprising:
The communication data that will acquire brings the power distribution network information traffic model pre-established into, with finite automata to information communication network
Network communicates emulation；
Information communication simulation result is recorded on the event axis in the form of communication simulation data packet；
The communication data includes: the status data switched in power distribution network, the node voltage current data and change that have measuring point
Depressor status data.
6. the method as described in claim 1, which is characterized in that it is described using the power distribution network information traffic model that pre-establishes into
After row information communication simulation, and it is based on before simulation time splicing physical simulation and information communication simulation result, further includes:
Whether judge in information communication simulation result comprising control signal:
If so, according to the control signal update power distribution network topological structure and operation data, and opened up according to updated power distribution network
Structure and operation data are flutterred, carries out physical simulation again；
Otherwise, it is transferred to and physical simulation and information communication simulation result is spliced based on simulation time.
7. the method as described in claim 1, which is characterized in that the foundation of the power distribution network information traffic model, comprising:
Communication network based on power distribution network establishes power distribution network information traffic model using nodal analysis method and network model；
The nodal analysis method is shown below:
NLlm=(Wlm,Rblm,RBlm), l ∈ [1, n], m ∈ [1, n]
In formula, n indicates communication network node total number, NLlmFor a multi-component system, WlmIt indicates between communication network node l and m
Bandwidth, RblmIndicate the transmission rate between communication network node l and m, RBlmIndicate the baud between communication network node l and m
Rate, as l=m, NLlmFor communication node, as l ≠ m, NLlmIt is communication link；
The network model is shown below:
A is by NLlmThe adjacency matrix for the n × n that (l, m ∈ [1, n]) is constituted, works as NLlm≠ 0, indicate communication network node l and
Node m is directly connected to, NLlmIndicate the performance of link lm；Work as NLlm=0, it indicates not to be directly connected between lm.
8. method as claimed in claim 5, which is characterized in that the splicing physical simulation and information communication simulation are as a result, obtain
To power distribution network information physical system associative simulation result, comprising:
Physical simulation data packet and communication simulation data packet are read according to the time respectively from the event axis；
Splice the physical simulation data packet and communication simulation data packet, obtains power distribution network information physical system associative simulation knot
Fruit.
9. a kind of power distribution network information physical system combines timing simulation system characterized by comprising electrical physical simulation mould
Block, information communication simulation module and data synthesis module；
The electrical physical simulation module, for the time series data of the power distribution network based on acquisition, in the physics sampling period using pre-
The electrical physical system model of the power distribution network first established carries out physical simulation；
The information communication simulation module, for when reaching the sampling period of communication network, the communication data based on acquisition to be adopted
Emulation is communicated with the power distribution network information traffic model pre-established；
The Data Synthesis module, for splicing physical simulation and information communication simulation as a result, obtaining power distribution network information physical system
System associative simulation result.
10. system as claimed in claim 9, which is characterized in that the electrical physical simulation module includes: time series data acquisition
Unit, Load flow calculation unit, convergence judging unit and physical data recording unit；
The time series data acquisition unit, for being based on markers from electrical power distribution automatization system, power information acquisition system and production
The power distribution network time series data of discontinuity surface when management system acquires same；
The Load flow calculation unit, for based on the time series data and the electrical physical system model of power distribution network that pre-establishes,
Carry out the Load flow calculation of the electrical physical system of power distribution network；
The convergence judging unit, for judging whether Load flow calculation restrains: if so, calling physical data recording unit；It is no
Then call Load flow calculation unit；
Physical data recording unit, for being recorded in physical simulation result in the form of physical simulation data packet comprising timing
On event axis；
Wherein, the time series data includes: the status data switched in power distribution network, the active and idle data of load and the amount of having
The node voltage current data of measuring point.
11. system as claimed in claim 10, which is characterized in that the information communication simulation module includes: finite automata
Simulation unit and communication data recording unit；
The finite automata simulation unit, the communication data for will acquire bring the power distribution network information communication mould pre-established into
Type communicates emulation to communication network with finite automata；
The communication data recording unit, for information communication simulation result to be recorded in institute in the form of communication simulation data packet
It states on event axis；
The communication data includes: the status data switched in power distribution network, the node voltage current data and change that have measuring point
Depressor status data.
12. system as claimed in claim 11, which is characterized in that the Data Synthesis module include: data-reading unit and
Data concatenation unit；
The data-reading unit, for reading physical simulation data packet according to the time respectively from the event axis and communicating imitative
True data packet；
The data concatenation unit obtains power distribution network letter for splicing the physical simulation data packet and communication simulation data packet
Cease physical system associative simulation result.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112737832A (en) * | 2020-12-25 | 2021-04-30 | 东北电力大学 | Electric power communication hybrid simulation method for end-to-end model mapping |
| CN113630267A (en) * | 2021-07-16 | 2021-11-09 | 江苏徐工工程机械研究院有限公司 | Communication system simulation evaluation method and system suitable for energy consumption control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737832A (en) * | 2020-12-25 | 2021-04-30 | 东北电力大学 | Electric power communication hybrid simulation method for end-to-end model mapping |
| CN112737832B (en) * | 2020-12-25 | 2022-06-28 | 东北电力大学 | Electric power communication hybrid simulation method for end-to-end model mapping |
| CN113630267A (en) * | 2021-07-16 | 2021-11-09 | 江苏徐工工程机械研究院有限公司 | Communication system simulation evaluation method and system suitable for energy consumption control system |
| CN113630267B (en) * | 2021-07-16 | 2023-09-05 | 江苏徐工工程机械研究院有限公司 | Communication system simulation evaluation method and system suitable for energy consumption control system |
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