CN104166743A - Power grid simulation system and method - Google Patents
Power grid simulation system and method Download PDFInfo
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- CN104166743A CN104166743A CN201310182276.1A CN201310182276A CN104166743A CN 104166743 A CN104166743 A CN 104166743A CN 201310182276 A CN201310182276 A CN 201310182276A CN 104166743 A CN104166743 A CN 104166743A
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Abstract
The invention discloses a power grid simulation system and method. The system comprises a creating module, a parameter input module, an operation module and a simulation output module. The creating module is used for creating a power distribution network simulation model according to a power grid. The parameter input module is used for inputting parameter information into corresponding simulation monitoring points in the power distribution network simulation model, wherein the parameter information is monitored by one or more on-site monitoring points, and the parameter input module is used for selecting one or more data sampling points in the power distribution network simulation model and setting output types of electrical parameters of the data sampling points. The operation module is used for operating the power distribution network simulation model according to the parameter information of the simulation monitoring points. The simulation output module is used for outputting the electrical parameters of the data sampling points of the power distribution network simulation model in the operation process. Electromagnetic transient analysis and long-time voltage drop monitoring can be performed on the power grid, real-time typical fault analog simulation can be performed, and a voltage sag region and a voltage transient state value affecting a user can be estimated.
Description
Technical field
The present invention relates to electric system simulation field, especially, relate to a kind of Power System Simulator and method.
Background technology
Along with society, expanding economy, electrical network is had higher requirement to power supply reliability and the quality of power supply.
By breaking down and the voltage that causes falls and can propagate to each electric pressure by power transmission network in electric system somewhere, the user on a large scale may be subject to the impact that voltage falls.The general electromagnetic transient simulation that adopts voltage to fall calculates in Study system and breaks down and cause that voltage falls, thus the region, trouble spot of identification and discovery relevant sensitization load cisco unity malfunction.
Most scheme is to carry out electromagnetic transient simulation by existing grid simulation software (as: PSCAD/EMTDC or Matlab/Simulink) for one section of circuit or several circuits, cannot carry out fault simulation accurately to electrical network entirety.
Summary of the invention
The object of the invention is to provide a kind of Power System Simulator and method, cannot carry out the technical matters of fault simulation accurately to electrical network entirety to solve existing simulating scheme.
For achieving the above object, the invention provides a kind of Power System Simulator, comprising:
Creation module, for creating distribution network realistic model according to electrical network;
Parameter input module, for one or more described electrical network field monitorings are put to measured parameter information, input analog monitoring point corresponding in described distribution network realistic model, in described distribution network realistic model, choose one or more data sampling points, and the output classification of the electric parameter of described data sampling point is set;
Operation module, for moving described distribution network realistic model according to the parameter information of described analog monitoring point;
Simulation data module, for exporting the electric parameter of described distribution network realistic model at the described data sampling point of operational process.
Further, described simulation data module is also for recording the electric parameter of described data sampling point of operational process of described distribution network realistic model.
Further, described system also comprises:
Output monitoring modular, be connected with described simulation data module, and for the electric parameter of the described data sampling point of described simulation data module records is mated with predetermined threshold value scope, in the time that exceeding described predetermined threshold value scope, described electric parameter reports to the police.
Further, described simulation data module comprises:
Record cell, for recording the electric parameter of data sampling point described in the operational process of described distribution network realistic model;
Figure output unit, for being depicted as the electric parameter of the described recording unit records in the first Preset Time electric parameter curve of cyclical fluctuations figure output;
Output of for ms unit, for being integrated into the electric parameter of the described recording unit records in the second Preset Time data form output.
Further, described creation module creates described distribution network realistic model according to the configuration information of described electrical network,
The configuration information of described electrical network comprises electrical equipment information and the electrical network link information of the distribution network of one or more voltage aspects.
Further, described system also comprises:
Correction verification module, whether correct for electrical network connection and the electrical equipment suitable environment of distribution network realistic model described in verification, when incorrect, in described distribution network realistic model, indicate.
Further, described system also comprises:
Component library, is connected with described creation module, and for importing and store or create and store described electrical equipment information.
Further, described electrical equipment comprises generating set, the single-phase potential device of 500kV, transmission line equipment, reactive-load compensation equipment and customer charge.
As a total technical conceive, the present invention also provides a kind of grid simulation method, comprises the following steps:
Step S1: create distribution network realistic model according to electrical network;
Step S2: one or more field monitorings in electrical network are put to measured parameter information, input analog monitoring point corresponding in described distribution network realistic model, choose one or more data sampling points at described distribution network realistic model, and the output classification of the electric parameter of described data sampling point is set;
Step S4: move described distribution network realistic model according to the parameter information of described analog monitoring point;
Step S5: the electric parameter of exporting the described data sampling point of described distribution network realistic model in operational process.
Further, described step S5 also comprises the electric parameter of data sampling point described in the operational process that records described distribution network realistic model, and described method also comprises:
Step S6: the electric parameter of the described data sampling point of described step S5 record is mated with predefined threshold range, report to the police in the time that described electric parameter exceeds described threshold range.
Further, described step S1 comprises according to the configuration information of described electrical network and creates described distribution network realistic model, and the configuration information of described electrical network comprises electrical equipment information and the electrical network link information of the distribution network of one or more voltage aspects.
Further, before carrying out described step S4, described method also comprises:
Step S3: whether electrical network connection and electrical equipment suitable environment described in verification in distribution network realistic model be correct, indicates when incorrect in described distribution network realistic model.
The present invention has following beneficial effect:
The present invention is by setting up the distribution network realistic model of electrical network, can be by the parameter information of input electrical network to analog monitoring point, and in simulation process, the electric parameter of data sampling point is exported, can realize electrical network is carried out to electromagnetic transient analysis and term Voltage falls monitoring, can carry out real-time typical fault analog simulation, can assess and affect user's voltage sag territory and voltage transient peak value, can multianalysis may bring the various risk factors of negative effect to client's power supply reliability and power supply quality, for construction, monitoring and the maintenance of electrical network provide means and foundation.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the composition structural representation of the Power System Simulator of the preferred embodiment of the present invention;
Fig. 2 is the treatment scheme schematic diagram of the grid simulation method of the preferred embodiment of the present invention;
Fig. 3 is the Lv Lu line fault Lu Cheng bus B phase voltage fluctuation schematic diagram of the 220kV that records of the field monitoring point of the Beijing Power Network of the preferred embodiment of the present invention 1; And
Fig. 4 is the Jingxi Hotel 380V bus three-phase voltage fluctuation schematic diagram that the data sampling point of the Beijing Power Network analogue system of the preferred embodiment of the present invention 1 obtains.
Marginal data:
11, creation module; 12, parameter input module; 13, operation module; 14, simulation data module; 141, record cell; 142, figure output unit; 143, Output of for ms unit; 15, correction verification module; 16, component library; 17, output monitoring modular.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Referring to Fig. 1, Power System Simulator of the present invention, comprises creation module 11, parameter input module 12, operation module 13 and simulation data module 14.Wherein, creation module 11 is for creating electrical network distribution network realistic model according to electrical network; Parameter input module 12 is for putting measured parameter information by one or more electrical network field monitorings, corresponding analog monitoring point in input distribution network realistic model, choose one or more data sampling points at distribution network realistic model, and the output classification of the electric parameter of data sampling point is set; Operation module 13 is for moving distribution network realistic model according to the parameter information of analog monitoring point; Simulation data module 14 is for the electric parameter of the data sampling point of the operational process of output distribution network simulation model.
The present invention is by setting up the distribution network realistic model of electrical network, the parameter information that can pass through to pass through input electrical network in simulation process is to analog monitoring point, and constantly by the electric parameter of data sampling point output, electrical network is carried out to electromagnetic transient analysis in realization and term Voltage falls monitoring, can carry out real-time typical fault analog simulation, can assess and affect user's voltage sag territory and voltage transient peak value, can multianalysis may bring the various risk factors of negative effect to client's power supply reliability and power supply quality.
Preferably, simulation data module 14 is also for recording the electric parameter of data sampling point of operational process of distribution network realistic model.
Preferably, system also comprises:
Output monitoring modular 17, is connected with simulation data module 14, and mates with predetermined threshold value scope for the electric parameter of data sampling point that simulation data module 14 is recorded, in the time that electric parameter exceeds predetermined threshold value scope, reports to the police.
Preferably, simulation data module 14 comprises record cell 141, figure output unit 142 and Output of for ms unit 143.Record cell 141, for recording the electric parameter of operational process data sampling point of distribution network realistic model; Figure output unit 142, is depicted as electric parameter curve of cyclical fluctuations figure output for the electric parameter that the record cell in the first Preset Time 141 is recorded; Output of for ms unit 143, is integrated into data form output for the electric parameter that the record cell in the second Preset Time 141 is recorded.
Preferably, creation module 11 creates distribution network realistic model according to the configuration information of electrical network, and the configuration information of electrical network comprises electrical equipment information and the electrical network link information of the distribution network of one or more voltage aspects.
Preferably, system also comprises correction verification module 15, and whether correction verification module 15 is correct for electrical network connection and the electrical equipment suitable environment of verification distribution network realistic model, when incorrect, in distribution network realistic model, indicates.
Preferably, system also comprises component library 16, and component library 16 is connected with creation module 11, and for importing and store or create and stored electricity component information.Wherein, electrical equipment comprises generating set, the single-phase potential device of 500kV, transmission line equipment, reactive-load compensation equipment and customer charge.Thereby can carry out comparatively accurate simulation analysis to custom power quality for multiple changes of operating modes moment such as different electric pressures, different faults generation moment, operation variations.Before system operation, can operation desired parameters be set by operation module.Existing most of electric network electromagnet transient emulation can only realize one or several circuit of emulation, and can not carry out long-term monitoring to the operation of power networks situation to completing, and existence can not reflect the problem of electrical network actual conditions completely.The present invention can set up the power system simulation model from 500kV to 380V, and monitoring that can be real-time, long-term and calculating, has ensured the accuracy of emulation.
Referring to Fig. 2, grid simulation method of the present invention, comprises the following steps:
Step S1: create distribution network realistic model according to electrical network;
Step S2: one or more field monitorings in electrical network are put to measured parameter information, corresponding analog monitoring point in input distribution network realistic model, choose one or more data sampling points at distribution network realistic model, and the output classification of the electric parameter of data sampling point is set;
Step S4: according to the parameter information operation distribution network realistic model of analog monitoring point;
Step S5: the electric parameter of the data sampling point of output distribution network simulation model in operational process.
Preferably, step S1 comprises the configuration information establishment distribution network realistic model according to electrical network, and the configuration information of electrical network comprises electrical equipment information and the electrical network link information of the distribution network of one or more voltage aspects.
Preferably, before carrying out step S4, method also comprises step S3: whether electrical network connection and electrical equipment suitable environment in verification distribution network realistic model be correct, when incorrect, in distribution network realistic model, indicates.
Preferably, step S5 also comprises the electric parameter of data sampling point in the operational process that records distribution network realistic model, method also comprises step S6: the electric parameter of the data sampling point of step S5 record is mated with predefined threshold range, in the time that electric parameter exceeds threshold range, report to the police.
Below by specific embodiment, the present invention will be further elaborated and checking.
Embodiment 1:
The present embodiment is the actual disposition information according to Beijing Power Network, and set up and truly reflected the Beijing Power Network analogue system of Beijing Power Network physical device and annexation according to said method, and by this Beijing Power Network analogue system, the custom power quality in electrical network metallicity singlephase earth fault situation is carried out to simulation analysis.In the present embodiment, this analogue system is at existing ADPSS(Advanced Digital Power System Simulator, the digital simulator of electric system) basis on improve and optimizate and realize.
From simulation result:
1) in subregion when 220kV hinge line failure (as shown in Figure 3, the Lv Lu line fault Lu Cheng bus B phase voltage of the 220kV that field monitoring point is recorded is input to the analog monitoring point of Beijing Power Network analogue system), the amplitude that circuit both sides voltage drops into is about 30%-40%, the 380V responsible consumer of directly taking out of for circuit both sides website, the minimum amplitude dropping into mutually of 380V side voltage is about 40～50%; For the non-380V responsible consumer of directly taking out of of circuit both sides website (as shown in Figure 4, the Jingxi Hotel 380V bus three-phase voltage waveform schematic diagram of the corresponding data sampling point of Beijing Power Network analogue system), the minimum amplitude dropping into mutually of 380V side voltage is about 50～70%.
2), when in subregion, 220KV loads line failure, the amplitude that circuit both sides voltage drops into is about 20%～30%, the 380V responsible consumer of directly taking out of for circuit both sides website, and the minimum amplitude dropping into mutually of 380V side voltage is about 30～40%; For the non-380V responsible consumer of directly taking out of of circuit both sides website, the minimum amplitude dropping into mutually of 380V side voltage is about 60～70%.
3), in subregion when 110KV line failure, the amplitude that 110KV circuit both sides voltage drops into is about 20%～30%, the 380V user who directly takes out of for circuit both sides website, and the minimum amplitude dropping into mutually of 380V side voltage is about 40%～50%; For belong to the same bus of 110KV with 380V responsible consumer, 380V side voltage is minimum drop into mutually substantially constant.
4) voltage falls transmission and transformer have important relationship, and during through different winding connections, different grounding modes, voltage falls amplitude, with falling, variation all occurred mutually.Because the 110kV Transformer Winding mode of connection is Y/ Δ 11, the 10kV Transformer Winding mode of connection is Δ 1/Y0, after conversion, and separate C, A, the B phase of being respectively of 380V fault that electrical network 220kV singlephase earth fault is separate is A, B, C phase time is corresponding.
5) as two in eight treasures (choice ingredients of certain special dishes), the Men Baoshuan of important line, Yangxi two, too towards the circuits such as two as broken down, can affect multiple responsible consumers.
In summary, the present invention is by setting up the distribution network realistic model of electrical network, can be by the constantly electric parameter of record data sampling spot output in simulation process, can realize electrical network is carried out to electromagnetic transient analysis and term Voltage falls monitoring, carry out typical fault simulation calculation at 500kV to the voltage aspect of 380V, assessment affects user's voltage sag territory and transient peaks, can multianalysis may bring the various risk factors of negative effect to client's power supply reliability and power supply quality, for construction, monitoring and the maintenance of electrical network provide means and foundation.
The present invention is short and sweet, easy to operate, can carry out comparatively accurate simulation analysis for multiple changes of operating modes moment such as different electric pressures, different faults generation moment, operation variations.And; the present invention has considered the impact of electric network fault on custom power quality under the many factors actings in conjunction such as power network wiring mode, earthing mode, transformer connection mode, protected mode; real simulation the impact of electric network fault on custom power quality; meet electrical network actual conditions and development trend, have important theory and practice meaning to exploring power network development with raising custom power quality.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a Power System Simulator, is characterized in that, comprising:
Creation module (11), for creating distribution network realistic model according to electrical network;
Parameter input module (12), for one or more described electrical network field monitorings are put to measured parameter information, input analog monitoring point corresponding in described distribution network realistic model, in described distribution network realistic model, choose one or more data sampling points, and the output classification of the electric parameter of described data sampling point is set;
Operation module (13), for moving described distribution network realistic model according to the parameter information of described analog monitoring point;
Simulation data module (14), for exporting the electric parameter of described distribution network realistic model at the described data sampling point of operational process.
2. system according to claim 1, is characterized in that, described simulation data module (14) is also for recording the electric parameter of described data sampling point of operational process of described distribution network realistic model.
3. system according to claim 2, is characterized in that, described system also comprises:
Output monitoring modular (17), be connected with described simulation data module (14), and for the electric parameter of the described data sampling point of described simulation data module (14) record is mated with predetermined threshold value scope, in the time that exceeding described predetermined threshold value scope, described electric parameter reports to the police.
4. system according to claim 2, is characterized in that, described simulation data module (14) comprising:
Record cell (141), for recording the electric parameter of data sampling point described in the operational process of described distribution network realistic model;
Figure output unit (142), for being depicted as electric parameter curve of cyclical fluctuations figure output by the electric parameter of described record cell (141) record in the first Preset Time;
Output of for ms unit (143), for being integrated into data form output by the electric parameter of described record cell (141) record in the second Preset Time.
5. according to the system described in any one in claim 1 to 4, it is characterized in that,
Described creation module (11) creates described distribution network realistic model according to the configuration information of described electrical network,
The configuration information of described electrical network comprises electrical equipment information and the electrical network link information of the distribution network of one or more voltage aspects.
6. system according to claim 5, is characterized in that, described system also comprises:
Correction verification module (15), whether correct for electrical network connection and the electrical equipment suitable environment of distribution network realistic model described in verification, when incorrect, in described distribution network realistic model, indicate.
7. system according to claim 5, is characterized in that, described system also comprises:
Component library (16), is connected with described creation module (11), and for importing and store or create and store described electrical equipment information.
8. system according to claim 7, is characterized in that,
Described electrical equipment comprises generating set, the single-phase potential device of 500kV, transmission line equipment, reactive-load compensation equipment and customer charge.
9. a grid simulation method, is characterized in that, comprising:
Step S1: create distribution network realistic model according to electrical network;
Step S2: one or more field monitorings in electrical network are put to measured parameter information, input analog monitoring point corresponding in described distribution network realistic model, choose one or more data sampling points at described distribution network realistic model, and the output classification of the electric parameter of described data sampling point is set;
Step S4: move described distribution network realistic model according to the parameter information of described analog monitoring point;
Step S5: the electric parameter of exporting the described data sampling point of described distribution network realistic model in operational process.
10. method according to claim 9, is characterized in that, described step S5 also comprises the electric parameter of data sampling point described in the operational process that records described distribution network realistic model, and described method also comprises:
Step S6: the electric parameter of the described data sampling point of described step S5 record is mated with predefined threshold range, report to the police in the time that described electric parameter exceeds described threshold range.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104538979A (en) * | 2015-01-22 | 2015-04-22 | 思源清能电气电子有限公司 | Simulation modeling method for optimizing dynamic reactive power compensation capacity of wind farm |
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| CN111382525A (en) * | 2020-03-24 | 2020-07-07 | 国网河北省电力有限公司沧州供电分公司 | Low-frequency power transmission closed loop test system and method |
| CN111382525B (en) * | 2020-03-24 | 2024-04-05 | 国网河北省电力有限公司沧州供电分公司 | Low-frequency power transmission closed-loop test system and method |
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