CN103887790B - Transmission and distribution network works in coordination with flow control method and system - Google Patents
Transmission and distribution network works in coordination with flow control method and system Download PDFInfo
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Abstract
Transmission and distribution network of the present invention works in coordination with flow control method and system, according to EMS, transmission system model is set up to power transmission network, according to DMS, distribution system model is set up to power distribution network, set up the Information Interaction Model between defeated, power distribution network, the Load flow calculation mode of EMS, DMS is utilized to carry out repeatedly Load flow calculation, obtain iterative computation result, according to successive ignition result of calculation, data in appointed information interaction models are carried out alternately, determine that transmission and distribution network works in coordination with calculation of tidal current, work in coordination with calculation of tidal current according to transmission and distribution network, trend is worked in coordination with to transmission and distribution network and controls.Owing to adopting EMS and DMS subregion Load flow calculation in transmission and distribution network, carry out iterative computation, reduce the error of calculation that Load flow calculation in EMS and DMS uses equivalence method to set up network model to bring, improve whole transmission and distribution network and work in coordination with Load flow calculation precision, thus can accurately realize transmission and distribution network and work in coordination with power flowcontrol, guarantee power system security, Effec-tive Function.
Description
Technical field
The present invention relates to electric power network technical field, particularly relate to transmission and distribution network and work in coordination with flow control method and system.
Background technology
In practical power systems, whole electric power system by sending out, transmission system and distribution system form.
Existing EMS(Energy Management System, EMS) advanced applied software only network modelling is carried out to the transmission system part in whole electric power system, to distribution system part usually when carrying out network modelling, be load by its equivalence, therefore the Load flow calculation function of EMS only calculates transmission system part trend, does not calculate the trend of distribution system.Existing DMS (Distribution Management System, Distribution Management System) advanced applied software only network modelling is carried out to the distribution system part in whole electric power system, to transmission system part usually when carrying out network modelling, be equivalent power supply by its equivalence, therefore the Load flow calculation function of DMS only calculates distribution system part trend, does not calculate the trend of transmission system.
In practical power systems, between transmission system and distribution system, there is electric connecting relation.Therefore, carry out Load flow calculation respectively after being divided into transmission system network model and power distribution system network model by the method for equivalence, there is certain error in the calculation of tidal current obtained compared with real power system state.If carry out transmission and distribution network compared with the calculation of tidal current of big error to electric power system according to this existence to work in coordination with that power flowcontrol will inevitably exist compared with big error, this will have a strong impact on, and electric power system is efficient, safe operation.
Summary of the invention
Based on this, be necessary that working in coordination with power flowcontrol for transmission and distribution network in existing electric power system exists comparatively big error, serious problems affect that electric power system is efficient, the problem of safe operation, provide one accurately transmission and distribution network work in coordination with power flowcontrol and system, guarantee power system security, Effec-tive Function.
A kind of transmission and distribution network works in coordination with flow control method, comprises step:
Traversal electric power system, carries out subregion to power transmission network in electric power system and power distribution network, sets up transmission system model according to EMS to power transmission network, set up distribution system model according to DMS to power distribution network;
Set up the Information Interaction Model between power transmission network and power distribution network, carry out data interaction to make described transmission system model by described Information Interaction Model and described distribution system model;
Utilize the Load flow calculation mode of EMS to carry out repeatedly Load flow calculation to power transmission network, obtain transmission system models for several times calculation of tidal current, utilize the Load flow calculation mode of DMS to carry out trend to power distribution network and repeatedly calculate, obtain distribution system models for several times calculation of tidal current;
Carry out successive ignition calculating according to described transmission system models for several times calculation of tidal current and described distribution system models for several times calculation of tidal current, obtain successive ignition result of calculation;
According to described successive ignition result of calculation, specify the data in described Information Interaction Model to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current;
Work in coordination with calculation of tidal current according to described transmission and distribution network, trend is worked in coordination with to described transmission and distribution network and controls.
A kind of transmission and distribution network works in coordination with power flow control system, comprising:
Model building module, for traveling through electric power system, carrying out subregion to power transmission network in electric power system and power distribution network, setting up transmission system model according to EMS to power transmission network, setting up distribution system model according to DMS to power distribution network;
Module is set up in data interaction, for setting up the Information Interaction Model between power transmission network and power distribution network, carries out data interaction to make described transmission system model by described Information Interaction Model and described distribution system model;
Load flow calculation module, for utilizing the Load flow calculation mode of EMS, repeatedly Load flow calculation is carried out to power transmission network, obtain transmission system models for several times calculation of tidal current, utilize the Load flow calculation mode of DMS to carry out trend to power distribution network and repeatedly calculate, obtain distribution system models for several times calculation of tidal current;
Iterative computation module, for carrying out successive ignition calculating according to described transmission system models for several times calculation of tidal current and described distribution system models for several times calculation of tidal current, obtains successive ignition result of calculation;
Collaborative trend determination module, for according to described successive ignition result of calculation, specify the data in described Information Interaction Model to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current;
Control module, for working in coordination with calculation of tidal current according to described transmission and distribution network, working in coordination with trend to described transmission and distribution network and controlling.
Transmission and distribution network of the present invention works in coordination with flow control method and system, subregion is carried out to power transmission network in electric power system and power distribution network, according to EMS, transmission system model is set up to power transmission network, according to DMS, distribution system model is set up to power distribution network, set up the Information Interaction Model between power transmission network and power distribution network afterwards, the Load flow calculation mode of EMS and DMS is utilized to carry out repeatedly Load flow calculation to power transmission network respectively, obtain transmission system model and distribution system models for several times calculation of tidal current, iterative computation result is obtained again according to transmission system model and distribution system models for several times calculation of tidal current, according to described successive ignition result of calculation, the data in described Information Interaction Model are specified to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current, finally work in coordination with calculation of tidal current according to described transmission and distribution network, work in coordination with trend to described transmission and distribution network to control.Owing to adopting EMS and DMS subregion Load flow calculation in transmission and distribution network, carry out iterative computation more afterwards, reduce the error of calculation that Load flow calculation in EMS and DMS uses equivalence method to set up network model to bring, improve whole transmission and distribution network and work in coordination with Load flow calculation precision, thus can accurately realize transmission and distribution network and work in coordination with power flowcontrol, guarantee power system security, Effec-tive Function.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that transmission and distribution network of the present invention works in coordination with flow control method first embodiment;
Fig. 2 is the schematic flow sheet that transmission and distribution network of the present invention works in coordination with flow control method second embodiment;
Fig. 3 is the structural representation that transmission and distribution network of the present invention works in coordination with power flow control system first embodiment;
Fig. 4 is the structural representation that transmission and distribution network of the present invention works in coordination with power flow control system second embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below with reference to the accompanying drawings and embodiment, the present invention is further elaborated.Should be appreciated that concrete enforcement described herein is only in order to explain the present invention, does not limit the present invention.
As shown in Figure 1, a kind of transmission and distribution network works in coordination with flow control method, comprises step:
S100: traversal electric power system, carries out subregion to power transmission network in electric power system and power distribution network, sets up transmission system model according to EMS to power transmission network, set up distribution system model according to DMS to power distribution network.
Whole electric power system is mainly made up of power transmission network and power distribution network, in power transmission network, adopt EMS to carry out management and control at present, EMS is a kind of computer system, comprise the software platform that basic Service supportive is provided, and provide a set of application making generating and transmission facility effectively run required function, to ensure suitable Supply Security by minimum cost.In power distribution network, adopt DMS to carry out management and control, DMS is a computer network system relating to the various aspects such as power supply enterprise's operational management, equipment control, user's service.Based on power distribution automation real time environment, GIS-Geographic Information System, comprehensive library system etc., form multiple relatively independent application function subsystem, comprise distribution automation, distribution work management, Trouble call management, automatic Drafting and equipment control, load management, distribution analytical system etc.To realize the management automation of power distribution network, optimize distribution and run, improve power supply reliability, offer high-quality service for user.Here, respectively by EMS and DMS to the power transmission network in electric power system and power distribution network constructing system model so that in follow-up process data quick, accurately process.
S200: set up the Information Interaction Model between power transmission network and power distribution network, carries out data interaction to make described transmission system model by described Information Interaction Model and described distribution system model.
The structure in information interaction district makes transmission system model can carry out data interaction by distribution system model, and this reciprocal process mainly comprises the conversion of data in defeated, distribution system and manually arranges, and this point will be described in detail clear in following specific embodiment.
S300: utilize the Load flow calculation mode of EMS to carry out repeatedly Load flow calculation to power transmission network, obtain transmission system models for several times calculation of tidal current, utilize the Load flow calculation mode of DMS to carry out trend to power distribution network repeatedly to calculate, obtain distribution system models for several times calculation of tidal current.
Utilize the Load flow calculation mode of EMS to carry out repeatedly Load flow calculation to power transmission network, utilize the Load flow calculation mode of DMS to carry out trend to power distribution network and repeatedly calculate, obtain EMS and distribution system models for several times calculation of tidal current respectively.Obtain the repeatedly calculation of tidal current of different system respectively, avoid influencing each other between defeated, distribution system, guarantee the accurate of the calculation of tidal current obtained.
S400: carry out successive ignition calculating according to described transmission system models for several times calculation of tidal current and described distribution system models for several times calculation of tidal current, obtains successive ignition result of calculation.
Iterative method is a quasi-representative method in numerical computations, is applied to finding roots of complex functional equation, solving equations, the aspects such as Matrix Calculating characteristic value.Its basic thought is Approach by inchmeal, first gets a coarse approximation, then uses same recurrence formula, repeatedly correct this initial value, until reaching till predetermined accuracy requires.Multiple iterative computation end value will be obtained here.
S500: according to described successive ignition result of calculation, specifies the data in described Information Interaction Model to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determines that transmission and distribution network works in coordination with calculation of tidal current.
According to different iterative computation results, the data specified in Information Interaction Model are carried out alternately, namely specify data that are defeated, distribution system to carry out alternately.Carry out mutual while, judging that whether mutual data meet the transmission and distribution network trend condition of convergence preset, when meeting the transmission and distribution network trend condition of convergence preset, determining that transmission and distribution network works in coordination with calculation of tidal current.
S600: work in coordination with calculation of tidal current according to described transmission and distribution network, works in coordination with trend to described transmission and distribution network and controls.
Work in coordination with calculation of tidal current according to transmission and distribution network accurately, trend is worked in coordination with to described transmission and distribution network and controls, guarantee the safety of network system, Effec-tive Function.
Transmission and distribution network of the present invention works in coordination with flow control method, subregion is carried out to power transmission network in electric power system and power distribution network, according to EMS, transmission system model is set up to power transmission network, according to DMS, distribution system model is set up to power distribution network, set up the Information Interaction Model between power transmission network and power distribution network afterwards, the Load flow calculation mode of EMS and DMS is utilized to carry out repeatedly Load flow calculation to power transmission network respectively, obtain transmission system model and distribution system models for several times calculation of tidal current, iterative computation result is obtained again according to transmission system model and distribution system models for several times calculation of tidal current, according to described successive ignition result of calculation, the data in described Information Interaction Model are specified to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current, finally work in coordination with calculation of tidal current according to described transmission and distribution network, work in coordination with trend to described transmission and distribution network to control.Owing to adopting EMS and DMS subregion Load flow calculation in transmission and distribution network, carry out iterative computation more afterwards, reduce the error of calculation that Load flow calculation in EMS and DMS uses equivalence method to set up network model to bring, improve whole transmission and distribution network and work in coordination with Load flow calculation precision, thus can accurately realize transmission and distribution network and work in coordination with power flowcontrol, guarantee power system security, Effec-tive Function.
As shown in Figure 2, wherein in an embodiment, before described S500 also in steps
S440: to keep in transmission system model and distribution system model all devices electric state and manually state consistency is set.
" keep in transmission system model and distribution system model all devices electric state and manually arrange state consistency " is exactly to keep in electrical power trans mission/distribution system corresponding equipment according to certain correspondence setting specifically, plant stand in the corresponding distribution system of such as, plant stand in transmission system, Switch Controller in transmission system answers the switch in distribution system, equivalent power supply etc. in the corresponding distribution system in AC line section in transmission system, this part content will further illustrate in follow-up specific embodiment.
Wherein in an embodiment, described according to described successive ignition result of calculation, specify the data in described Information Interaction Model to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network is worked in coordination with calculation of tidal current and specifically comprised step:
According to described successive ignition result of calculation, the data in described Information Interaction Model are specified to carry out alternately;
When carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, judge whether iterative computation number of times exceedes default maximum iteration time;
When iterative computation number of times exceedes default maximum iteration time, determine that transmission and distribution network works in coordination with calculation of tidal current.
The maximum iteration time preset, set according to current processing environment or operator's demand, in the present embodiment, when carrying out after mutual data meet the default transmission and distribution network trend condition of convergence, also need to judge whether iterative computation number of times exceedes default maximum iteration time, only have when iterative computation number of times exceedes default maximum iteration time, could determine that transmission and distribution network works in coordination with calculation of tidal current.
As shown in Figure 2, wherein in an embodiment, after institute S400 also in steps
S420: preserve described iterative computation result.
Preserve iterative computation result, guarantee to calculate the safety obtaining data, avoid, due to the unexpected loss causing data, being also convenient to check in follow-up operation simultaneously.
As shown in Figure 3, a kind of transmission and distribution network works in coordination with power flow control system, comprising:
Model building module 100, for traveling through electric power system, carrying out subregion to power transmission network in electric power system and power distribution network, setting up transmission system model according to EMS to power transmission network, setting up distribution system model according to DMS to power distribution network;
Module 200 is set up in data interaction, for setting up the Information Interaction Model between power transmission network and power distribution network, carries out data interaction to make described transmission system model by described Information Interaction Model and described distribution system model;
Load flow calculation module 300, for utilizing the Load flow calculation mode of EMS, repeatedly Load flow calculation is carried out to power transmission network, obtain transmission system models for several times calculation of tidal current, utilize the Load flow calculation mode of DMS to carry out trend to power distribution network and repeatedly calculate, obtain distribution system models for several times calculation of tidal current;
Iterative computation module 400, for carrying out successive ignition calculating according to described transmission system models for several times calculation of tidal current and described distribution system models for several times calculation of tidal current, obtains successive ignition result of calculation;
Collaborative trend determination module 500, for according to described successive ignition result of calculation, specify the data in described Information Interaction Model to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current;
Control module 600, for working in coordination with calculation of tidal current according to described transmission and distribution network, working in coordination with trend to described transmission and distribution network and controlling.
Transmission and distribution network of the present invention works in coordination with power flow control system, in model building module 100 pairs of electric power systems, power transmission network and power distribution network carry out subregion, according to EMS, transmission system model is set up to power transmission network, according to DMS, distribution system model is set up to power distribution network, data interaction is set up module 200 and is set up Information Interaction Model between power transmission network and power distribution network, Load flow calculation module 300 utilizes the Load flow calculation mode of EMS and DMS to carry out repeatedly Load flow calculation to power transmission network respectively, obtain transmission system model and distribution system models for several times calculation of tidal current, iterative computation module 400 obtains iterative computation result according to EMS and distribution system models for several times calculation of tidal current, collaborative trend determination module 500 is according to described successive ignition result of calculation, the data in described Information Interaction Model are specified to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current, control module 600 works in coordination with calculation of tidal current according to described transmission and distribution network, work in coordination with trend to described transmission and distribution network to control.Owing to adopting EMS and DMS subregion Load flow calculation in transmission and distribution network, carry out iterative computation more afterwards, reduce the error of calculation that Load flow calculation in EMS and DMS uses equivalence method to set up network model to bring, improve whole transmission and distribution network and work in coordination with Load flow calculation precision, thus can accurately realize transmission and distribution network and work in coordination with power flowcontrol, guarantee power system security, Effec-tive Function.
As shown in Figure 4, wherein in an embodiment, described transmission and distribution network is worked in coordination with power flow control system and is also comprised:
Condition regulation module 700, for keep in transmission system model and distribution system model all devices electric state and manually arrange state consistency.
Wherein in an embodiment, described collaborative trend determination module specifically comprises:
Data interaction unit, for according to described successive ignition result of calculation, specifies the data in described Information Interaction Model to carry out alternately;
Iterations judging unit, for when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, judges whether iterative computation number of times exceedes default maximum iteration time;
Determining unit, for when iterative computation number of times exceedes default maximum iteration time, determines that transmission and distribution network works in coordination with calculation of tidal current.
As shown in Figure 4, wherein in an embodiment, described transmission and distribution network is worked in coordination with power flow control system and is also comprised:
Memory module 800, for preserving described iterative computation result.
In order to further explain that transmission and distribution network of the present invention works in coordination with flow control method and system, explains employing one specific embodiment in detail below.It is specific as follows:
1) " information interaction district " is set up: analyze when the Load flow calculation function calling EMS and DMS carries out iterative computation and need mutual information, set up multiple information interaction tables, store and need mutual information, formed in " information interaction district ".The equipment in " information interaction district " and attribute thereof come from the network model of EMS and DMS.For convenience of description, following table the first row suffix is the network model that this device attribute of explanation of (E) comes from EMS, and suffix is the network model that this device attribute of explanation of (D) comes from DMS.Need the information interaction table of foundation as follows, interactive mode is replace another row with the row in the two row contents of a line in use table.
In the network model of " plant stand-plant stand " information interaction table: EMS and DMS, same plant stand needs mutual information.
| Plant stand gets rid of state (E) | Plant stand gets rid of state (D) |
In the network model of " switch-switch " information interaction table: EMS and DMS, same switch needs mutual information.
| Switch pair is except state (E) | Switch pair is except state (D) |
| Switch folding condition (E) | Switch folding condition (D) |
In the network model of " bus-bus " information interaction table: EMS and DMS, same bus needs mutual information.
| Bus bar is except state (E) | Bus bar is except state (D) |
| Busbar voltage amplitude (E) | Busbar voltage amplitude (D) |
| Busbar voltage angle (E) | Busbar voltage angle (D) |
What the network model medium value load of " load-feeder line " information interaction table: EMS was corresponding with the network model of DMS is needed mutual information by the feeder line of equivalence.
| Deng duty value active power (E) | Feeder line wastage in bulk or weight active power (D) |
| Equivalent reactive load power (E) | Feeder line wastage in bulk or weight reactive power (D) |
The equivalent power supply that in the network model of " AC line section-equivalent power supply " information interaction table: EMS, AC line section is corresponding with the network model of DMS after equivalence needs mutual information.
| State (E) is got rid of in AC line section | Equivalent power supply gets rid of state (D) |
| Alternating current circuit length of tape electricity condition (E) | Equivalent Power supply belt electricity condition (D) |
2) set up whole transmission and distribution network Load flow calculation convergence criterion: when the Load flow calculation function calling EMS and DMS carries out iterative computation, need whole transmission and distribution network Load flow calculation convergence criterion to judge iterative computation and whether should stop and whether transmission & distribution are worked in coordination with Load flow calculation and restrained.
If the bus number coming from the network model of EMS in " bus-bus " information interaction table is n, wherein the voltage magnitude of i-th bus and angle are respectively V
ei, δ
ei, accordingly, the bus number coming from the network model of DMS is also n, and wherein the voltage magnitude of i-th bus is V
di, δ
di.What come from the network model of EMS in " load-feeder line " information interaction table waits duty value number to be m, and wherein jth waits the active power of duty value and reactive power to be respectively P
ej, Q
ej, accordingly, what come from the correspondence of the network model of DMS is m by the feeder line number of equivalence, and active power and the reactive power of wherein jth bar feeder line consumption are respectively P
dj, Q
dj.The convergence precision of voltage magnitude is ε
v, the convergence precision of level angle is ε
δ, the convergence precision of active power is ε
p, the convergence precision of reactive power is ε
q.Then the convergence criterion of whole transmission and distribution network Load flow calculation is as follows:
3) " information interaction district " information interaction operation A: kept each equipment electric state of the network model of EMS and DMS and manually arrange state consistency before calling Load flow calculation function, concrete sub-step is as follows:
A) for " plant stand-plant stand " information interaction table, " plant stand gets rid of state (D) " attribute of same a line is replaced with " plant stand gets rid of state (E) ".
B) for " switch-switch " information interaction table, replaced with " switch pair is except state (E) " by " switch pair is except state (D) " attribute of same a line, " switch folding condition (D) " attribute replaces with " switch folding condition (E) ".
C) for " bus-bus " information interaction table, " bus bar is except state (D) " attribute of same a line is replaced with " bus bar is except state (E) ".
D) for " AC line section-equivalent power supply " information interaction table, replaced with " equivalent power supply gets rid of state (E) " by " state (D) is got rid of in AC line section " attribute of same a line, " alternating current circuit length of tape electricity condition (D) " attribute replaces with " equivalent Power supply belt electricity condition (E) ".
E) attribute information coming from DMS in above each table is used to upgrade the corresponding property value of DMS network model.
4) trend of the Load flow calculation function calculating transmission system network model of EMS is called.If calculate convergence, go to step 5), otherwise terminate to calculate.
5) " information interaction district " information interaction operation B: for " bus-bus " information interaction table, replaced with " busbar voltage amplitude (E) " by " busbar voltage amplitude (D) " attribute of same a line, " busbar voltage angle (D) " attribute replaces with " busbar voltage angle (E) ".The attribute information coming from DMS in this table is used to upgrade the corresponding property value of DMS network model.
6) trend of the Load flow calculation function calculating power distribution system network model of DMS is called.If meet the whole transmission and distribution network Load flow calculation condition of convergence or exceed maximum iteration time, terminate to calculate, otherwise go to step 7).
7) " information interaction district " information interaction operation C: for " load-feeder line " information interaction table, " waiting duty value active power (E) " attribute of same a line is replaced with " feeder line wastage in bulk or weight active power (D) ", " equivalent reactive load power (E) " attribute replaces with " feeder line wastage in bulk or weight reactive power (D) ", uses the attribute information coming from EMS in this table to upgrade the corresponding property value of EMS network model.Go to step 4).
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (6)
1. transmission and distribution network works in coordination with a flow control method, it is characterized in that, comprises step:
Traversal electric power system, carries out subregion to power transmission network in electric power system and power distribution network, sets up transmission system model according to EMS to power transmission network, set up distribution system model according to DMS to power distribution network;
Set up the Information Interaction Model between power transmission network and power distribution network, carry out data interaction to make described transmission system model by described Information Interaction Model and described distribution system model;
To keep in transmission system model and distribution system model all devices electric state and manually state consistency is set, described transmission system model and all devices electric state in distribution system model and the plant stand during the corresponding distribution system of plant stand that state consistency specifically comprises in transmission system is manually set, the Switch Controller in transmission system answers the equivalent power supply in the corresponding distribution system of the switch in distribution system and the AC line section in transmission system;
Utilize the Load flow calculation mode of EMS to carry out repeatedly Load flow calculation to power transmission network, obtain transmission system models for several times calculation of tidal current, utilize the Load flow calculation mode of DMS to carry out trend to power distribution network and repeatedly calculate, obtain distribution system models for several times calculation of tidal current;
Carry out successive ignition calculating according to described transmission system models for several times calculation of tidal current and described distribution system models for several times calculation of tidal current, obtain successive ignition result of calculation;
According to described successive ignition result of calculation, specify the data in described Information Interaction Model to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current;
Work in coordination with calculation of tidal current according to described transmission and distribution network, trend is worked in coordination with to described transmission and distribution network and controls.
2. transmission and distribution network according to claim 1 works in coordination with flow control method, it is characterized in that, described according to described successive ignition result of calculation, the data in described Information Interaction Model are specified to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network is worked in coordination with calculation of tidal current and specifically comprised step:
According to described successive ignition result of calculation, the data in described Information Interaction Model are specified to carry out alternately;
When carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, judge whether iterative computation number of times exceedes default maximum iteration time;
When iterative computation number of times exceedes default maximum iteration time, determine that transmission and distribution network works in coordination with calculation of tidal current.
3. transmission and distribution network according to claim 1 and 2 works in coordination with flow control method, it is characterized in that, describedly carry out successive ignition calculating according to described transmission system models for several times calculation of tidal current and described distribution system models for several times calculation of tidal current, after obtaining successive ignition result of calculation also in steps:
Preserve described iterative computation result.
4. transmission and distribution network works in coordination with a power flow control system, it is characterized in that, comprising:
Model building module, for traveling through electric power system, carrying out subregion to power transmission network in electric power system and power distribution network, setting up transmission system model according to EMS to power transmission network, setting up distribution system model according to DMS to power distribution network;
Module is set up in data interaction, for setting up the Information Interaction Model between power transmission network and power distribution network, carries out data interaction to make described transmission system model by described Information Interaction Model and described distribution system model;
Condition regulation module, for to keep in transmission system model and distribution system model all devices electric state and manually arrange state consistency, described transmission system model and all devices electric state in distribution system model and the plant stand during the corresponding distribution system of plant stand that state consistency specifically comprises in transmission system is manually set, the Switch Controller in transmission system answers the equivalent power supply in the corresponding distribution system of the switch in distribution system and the AC line section in transmission system;
Load flow calculation module, for utilizing the Load flow calculation mode of EMS, repeatedly Load flow calculation is carried out to power transmission network, obtain transmission system models for several times calculation of tidal current, utilize the Load flow calculation mode of DMS to carry out trend to power distribution network and repeatedly calculate, obtain distribution system models for several times calculation of tidal current;
Iterative computation module, for carrying out successive ignition calculating according to described transmission system models for several times calculation of tidal current and described distribution system models for several times calculation of tidal current, obtains successive ignition result of calculation;
Collaborative trend determination module, for according to described successive ignition result of calculation, specify the data in described Information Interaction Model to carry out alternately, when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, determine that transmission and distribution network works in coordination with calculation of tidal current;
Control module, for working in coordination with calculation of tidal current according to described transmission and distribution network, working in coordination with trend to described transmission and distribution network and controlling.
5. transmission and distribution network according to claim 4 works in coordination with power flow control system, it is characterized in that, described collaborative trend determination module specifically comprises:
Data interaction unit, for according to described successive ignition result of calculation, specifies the data in described Information Interaction Model to carry out alternately;
Iterations judging unit, for when carrying out mutual data and meeting the default transmission and distribution network trend condition of convergence, judges whether iterative computation number of times exceedes default maximum iteration time;
Determining unit, for when iterative computation number of times exceedes default maximum iteration time, determines that transmission and distribution network works in coordination with calculation of tidal current.
6. the transmission and distribution network according to claim 4 or 5 works in coordination with power flow control system, it is characterized in that, also comprises:
Memory module, for preserving described iterative computation result.
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| CN201410079163.3A CN103887790B (en) | 2014-03-05 | 2014-03-05 | Transmission and distribution network works in coordination with flow control method and system |
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| CN103887790A CN103887790A (en) | 2014-06-25 |
| CN103887790B true CN103887790B (en) | 2015-09-16 |
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| CN104362627A (en) * | 2014-12-04 | 2015-02-18 | 国家电网公司 | Method for simplifying electric network based on power transfer distribution factor |
| CN105449667B (en) * | 2015-11-05 | 2018-03-20 | 国家电网公司 | A kind of generating and transmitting system Reliability Prediction Method |
| CN105703368B (en) * | 2016-02-04 | 2020-05-08 | 马瑞 | Multi-uncertainty energy flow modeling integrated with active power distribution network and transmission network |
| CN105703369B (en) * | 2016-02-04 | 2020-06-09 | 马瑞 | Optimal energy flow modeling and solving method for multi-energy coupling transmission and distribution network |
| CN106055755B (en) * | 2016-05-24 | 2019-09-17 | 上海市南变配电站服务有限公司 | A kind of power distribution network cooperates with real-timedigital simulation method with power transmission network |
| CN106786596A (en) * | 2016-11-28 | 2017-05-31 | 国家电网公司 | Transmission and distribution network combines the out-of-limit processing method of trend and system |
| CN106532713A (en) * | 2016-12-26 | 2017-03-22 | 长沙理工大学 | Method for calculating cooperative power flow of active power distribution network and power transmission network based on SoS (System of Systems) |
| CN107359649B (en) * | 2017-08-31 | 2019-08-13 | 华中科技大学 | A kind of transmission & distribution Integrated optimization dispatching method considered under polygamy net access situation |
| CN110880758B (en) * | 2019-11-22 | 2021-01-01 | 清华大学 | Decomposition coordination optimal power flow control method for power transmission network and power distribution network in electric power system |
| CN112165086B (en) * | 2020-08-12 | 2022-05-13 | 华南理工大学 | Online optimization system of active power distribution network |
| CN112270100B (en) * | 2020-11-05 | 2022-09-06 | 国网江苏省电力有限公司电力科学研究院 | Power transmission and distribution network load flow calculation method based on iteration efficiency weight |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635456A (en) * | 2009-06-23 | 2010-01-27 | 上海申瑞电力科技股份有限公司 | Method for joint state estimation of transmission network and distribution network |
| CN102931726A (en) * | 2012-10-22 | 2013-02-13 | 深圳供电局有限公司 | Main network and distribution network integrated security power supply system |
-
2014
- 2014-03-05 CN CN201410079163.3A patent/CN103887790B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635456A (en) * | 2009-06-23 | 2010-01-27 | 上海申瑞电力科技股份有限公司 | Method for joint state estimation of transmission network and distribution network |
| CN102931726A (en) * | 2012-10-22 | 2013-02-13 | 深圳供电局有限公司 | Main network and distribution network integrated security power supply system |
Non-Patent Citations (2)
| Title |
|---|
| 全电压序列电网规划中的输配电联合潮流计算;鲁跃峰等;《华东电力》;20100331;第38卷(第3期);第0345-0348页 * |
| 网格计算环境下输配电网联合潮流计算;陈羽等;《电力系统保护与控制》;20120301;第40卷(第5期);第42-47页 * |
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