CN105046587A - Grid equipment sequential management and simulation analysis method - Google Patents
Grid equipment sequential management and simulation analysis method Download PDFInfo
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- CN105046587A CN105046587A CN201510489747.2A CN201510489747A CN105046587A CN 105046587 A CN105046587 A CN 105046587A CN 201510489747 A CN201510489747 A CN 201510489747A CN 105046587 A CN105046587 A CN 105046587A
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Abstract
The present invention relates to a grid equipment sequential management and simulation analysis method. According to the method, a model parameter and a connection relation of power system equipment of a certain moment may be automatically generated according to user-specified time, and grid simulation data of this moment may be obtained by using online data and planned data. The method is fast and effective, and greatly improves grid equipment management and simulation capabilities.
Description
Technical field
The invention belongs to Power System Stability Analysis field, particularly relate to a kind of grid equipment timing management and simulating analysis.
Background technology
Along with the lifting at full speed of economic level, Chinese society is also day by day strong to the demand of electric power.In order to ensure that electric energy safe transmits reliably, carried out the Important Project such as transferring electricity from the west to the east, national network and UHV transmission in China Power Grids, the short-term load of alternating current-direct current series-parallel connection basically forms.Along with the expansion of electrical network scale, power grid security and stability is difficult to control further.The repeatedly electric network fault occurred in the world shows, the raising of transmission voltage grade, Interconnection Scale expand and the increase of transmission capacity, and all can increase the harm that electric network fault brings, failure cause and process are also more complicated.Carrying out running the comprehensively careful supervision of electrical network, analysis and control, ensureing electrical production, active demand that the safety of transmission and use is various countries' power industry.
Various kinds of equipment is the basis of composition electric system, and the accuracy of its model parameter, running status, directly determines the credibility of simulation analysis result.And in reality, due to power system device substantial amounts, and the complicacy of management, make this important step usually because not manageability and out in the cold, cause the deviation of analysis result.For the management of power system device, model parameter, annexation should be comprised, put into operation/content such as retired time, and should increment management in time.When stability analysis carried out by needs, can first fixed time point, to be generated according to time and management holder data by system and calculate data and carry out simulation analysis, now the confidence level of data is higher.
Summary of the invention
Goal of the invention:
For prior art Problems existing, the invention provides a kind of grid equipment timing management and simulating analysis.
Technical scheme:
A kind of grid equipment timing management and simulating analysis, is characterized in that: the method step is as follows:
(1) fixed time calculating data are obtained:
Step one mates basic data:
The time point of specifying according to user searches the basic data of coupling;
Step 2 superposition change information:
Retrieve all changes information of the point from monthly basic data to the fixed time in a database, and information temporally ascending order arrangement, one by one change information is added on the relevant device attribute of basic data;
Step 3 derives and calculates data:
Data after all changes have superposed, can reflect the model parameters of electric power system and annexation of specifying the moment;
(2) monthly basic data is refreshed
System monthly derives the basic data of data as this month of first day automatically, and step is identical with the step 2 to three in step (1); Here the monthly basic data of refreshing, refer in particular to when before certain entry information wrong time, the whole monthly basic data generated after causing all includes this misdata, needs to regenerate;
Step a is typing correct information again:
Found by user and typing correct information, the simultaneously refreshing of startup basic data again;
Step b order refreshes follow-up basic data:
System according to corrigendum time point, to the basic data regenerated afterwards monthly, until current time, the step 2 to three in the same step of step (1).
When described step one mates basic data, if this moon non-formation base data, then continue to find forward nearest a set of basic data; If the fixed time early than raw data, then reports an error.
During described step 2 superposition change information, when there is the repeatedly change of the same attribute of same equipment, owing to being ascending sort, then after, a change updates out last change automatically.
When described step 3 derives and calculates data, system operation mode can be changed further combined with historical data or planning data, obtain the calculating data in this moment, study for all kinds of stability simulation.
Advantage and effect:
This grid equipment timing management of the present invention and simulating analysis, have the following advantages and beneficial effect:
(1) the present invention can realize according to user's fixed time, automatically generates model parameter and the annexation of the power system device in this moment, then in conjunction with online data or planning data, can obtain the grid simulation data in this moment.
(2) this method is effective fast, drastically increases power equipment management and simulation capacity.
Accompanying drawing explanation
Fig. 1 is workflow diagram of the present invention.
Embodiment
Electric system is made up of thousands of various kinds of equipment, and each equipment is from putting into operation the date of retirement among constantly changing, the resistance value of such as alternating current circuit has certain difference when temperature is high and low, often adopts summer and winter two to overlap different parameters to carry out simulation analysis in reality.This just proposes higher requirement to the timing management of power system device, and namely different time points adopts different model parameters.Except model parameter, the information of carrying out timing management is needed also to comprise: equipment connecting relation, put into operation/retired time etc.
First there is a set of basic data in power system device timing management, as zero time data, follow-up change is all in this, as basis; Secondly, need above-mentioned all changes all to add time mark, then carry out database preservation and management in conjunction with change information.Finally, when user needs to carry out simulation analysis, system is searched in a database according to selected time point, all changes information superposition in basic data, forms the calculating data of this time point, carries out simulation analysis.
The present invention relates to a kind of grid equipment timing management and simulating analysis, and obtain the power system computation data of fixed time based on this system, carry out simulation study, organize content comprise equipment model, parameter, put into operation/retired time etc.
Below in conjunction with accompanying drawing, the present invention is described further:
1. basic data
When building native system, need to provide the power system device information of a set of raw data as zero moment, and additional markers.After this, system first day monthly derives a set of whole network data automatically, as the basic data of this month.So, when user need certain moment calculate data time, system is automatically found the basic data of this month, and from this month 1 to the equipment variations information superposition of fixed time in basic data, formed calculate data.System so can be avoided to superpose from raw data, point out the efficiency of searching.
The information of the whole network all devices of basic data required for simulation calculation, adopt the file layout of the comprehensive routine analyzer of electric system (PSASP) to preserve, all devices is all be referred to as unique sign with element names, specifically comprises:
(1) bus: title, upper voltage limit/lower limit etc.;
(2) AC line: title, resistance value, current limit etc.;
(3) transformer: title, type, resistance value, capacity limit value etc.;
(4) generator: title, power upper limit/lower limit, dynamic model parameters etc.;
(5) load: title, dynamic model parameters etc.
2. change information
Change information refers to any state of certain equipment, the change of model parameter, and all changes information all carries out increment management by database.For convenience of inquiry and management, the monthly basic data monthly automatically generated, as a kind of special change, is also recorded in database.Data list structure is as follows:
Below in conjunction with accompanying drawing, the present invention is described further:
As shown in Figure 1, the method concrete steps are as follows:
(1) fixed time calculating data are obtained
Step one mates basic data
The time point of specifying according to user searches the basic data of coupling.If this moon non-formation base data, then continue to find forward nearest a set of basic data; If the fixed time early than raw data, then reports an error.
Step 2 superposition change information
Retrieve all changes information of the point from monthly basic data to the fixed time in a database, and information temporally ascending order arrangement, one by one change information is added on the relevant device attribute of basic data.When there is the repeatedly change of the same attribute of same equipment, owing to being ascending sort, then after, a change updates out last change, this also realistic requirement automatically.
Step 3 derives and calculates data
Data after all changes have superposed, can reflect the model parameters of electric power system and annexation of specifying the moment.At this moment, system operation mode can be changed further combined with historical data or planning data, obtain the calculating data in this moment, study for all kinds of stability simulation.
(2) monthly basic data is refreshed
System monthly derives the basic data of data as this month of first day automatically, and step is identical with a upper trifle.Here the monthly basic data of refreshing, refer in particular to when before certain entry information wrong time, the whole monthly basic data generated after causing all includes this misdata, needs to regenerate.
Step one is typing correct information again
Found by user and typing correct information, the simultaneously refreshing of startup basic data again.
Step 2 order refreshes follow-up basic data
System according to corrigendum time point, to the basic data regenerated afterwards monthly, until current time, a same trifle of step.
This grid equipment timing management of the present invention and simulating analysis, timing management is carried out in the change for each equipment, and monthly regular formation base data; When user needs to obtain certain time point data, system is automatically matched to the basic data of this month, and follow-up equipment variations information superposition in time in basic data, forms the simulation calculation data in this moment.
Claims (4)
1. grid equipment timing management and a simulating analysis, is characterized in that: the method step is as follows:
(1) fixed time calculating data are obtained:
Step one mates basic data:
The time point of specifying according to user searches the basic data of coupling;
Step 2 superposition change information:
Retrieve all changes information of the point from monthly basic data to the fixed time in a database, and information temporally ascending order arrangement, one by one change information is added on the relevant device attribute of basic data;
Step 3 derives and calculates data:
Data after all changes have superposed, can reflect the model parameters of electric power system and annexation of specifying the moment;
(2) monthly basic data is refreshed
System monthly derives the basic data of data as this month of first day automatically, and step is identical with the step 2 to three in step (1); Here the monthly basic data of refreshing, refer in particular to when before certain entry information wrong time, the whole monthly basic data generated after causing all includes this misdata, needs to regenerate;
Step a is typing correct information again:
Found by user and typing correct information, the simultaneously refreshing of startup basic data again;
Step b order refreshes follow-up basic data:
System according to corrigendum time point, to the basic data regenerated afterwards monthly, until current time, the step 2 to three in the same step of step (1).
2. grid equipment timing management according to claim 1 and simulating analysis, is characterized in that: when described step one mates basic data, if this moon non-formation base data, then continue to find forward nearest a set of basic data; If the fixed time early than raw data, then reports an error.
3. grid equipment timing management according to claim 1 and simulating analysis, it is characterized in that: during described step 2 superposition change information, when there is the repeatedly change of the same attribute of same equipment, owing to being ascending sort, then after, a change updates out last change automatically.
4. grid equipment timing management according to claim 1 and simulating analysis, it is characterized in that: when described step 3 derives and calculates data, system operation mode can be changed further combined with historical data or planning data, obtain the calculating data in this moment, study for all kinds of stability simulation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113409165A (en) * | 2021-08-19 | 2021-09-17 | 清华四川能源互联网研究院 | Power data integration method and device, electronic equipment and readable storage medium |
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| US20110185196A1 (en) * | 2010-01-25 | 2011-07-28 | Tomoyuki Asano | Power Management Apparatus, Electronic Appliance, and Method of Managing Power |
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