CN101540505B - Building method of multistage multi-region interconnected network data model - Google Patents

Building method of multistage multi-region interconnected network data model Download PDF

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CN101540505B
CN101540505B CN2009100287316A CN200910028731A CN101540505B CN 101540505 B CN101540505 B CN 101540505B CN 2009100287316 A CN2009100287316 A CN 2009100287316A CN 200910028731 A CN200910028731 A CN 200910028731A CN 101540505 B CN101540505 B CN 101540505B
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data
control centre
network
equivalent port
trend
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CN2009100287316A
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CN101540505A (en
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张家安
蔡敏
毕兆东
孙建波
李淼
陈松林
李大虎
常宝立
俞秋阳
李敏
夏彦辉
何俊峰
王新宝
张玉琼
孙光辉
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南京南瑞继保电气有限公司
湖北省电力公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The invention relates to a building method of a multistage multi-region interconnected network data model. Data of a whole power network system is divided according to the range of dispatching of power networks, all stages of all dispatching centers of the network system respectively build data models, if correlation exists between the two dispatching centers, the upper-stage dispatching center defines an equivalent port model of the relating dot between the two dispatching centers, the equivalent port model corresponds to an external power network system related with each local sub-network system; the operating mode of the power network system adopts a cooperative mode of reporting the plan by the lower-stage dispatching center, adjusting by the upper-stage dispatching center, amending by the lower-stage dispatching center, and finally confirming by the upper-stage dispatching center; after the operating mode of the network system is determined, the multistage multi-region data model combination is performed; when certain equipment has a change event in the data model, the change processes the event in the whole power network system by adopting a model change coping mechanism.

Description

The construction method of multistage multi-region interconnected network data model
Technical field
The present invention relates to move relatively independent, related multistage, multi-region interconnected network operational mode analyzed the construction method of data model each other, be particularly useful for that electromagnetic looped network unlinks, the establishment of burst operation electric power system data model, share and maintenance.
Background technology
Current domestic electrical network is according to the operation of layering, partition management mode, and " layering " is meant that grid dispatching center is divided into different ranks, as: net transfer, economize transfer, transfer etc.; " subregion " is meant that the same levels grid dispatching center divides according to the zone.As shown in Figure 1; The management of power equipment, operational mode in " layering " management shows as the specific region again in the real system operation; As net transfer be in charge of 500kV factory station, stand between interconnection and economize between the interconnection trend, economize transfer be in charge of 220kV factory stand, stand between interconnection and the 220kV off line trend etc. of standing.
Under electric power system layering, the partition management mode, the electric network data model is safeguarded jointly that by the different subjects of control centres at different levels each main body is responsible for the part in its compass of competency, and the data model management is consistent with the power equipment management in the division of power and responsibility.
The power system operation mode analysis comprises contents such as trend calculating, static security stability analysis, transient stability analysis, the analysis of transient stability nargin, Transient Stability Control analysis of strategies, dynamic (microvariations) stability analysis.Trend is calculated the steady operation point of confirming system, is to carry out the basis that operational mode is analyzed; For inter-related two systems; If relating dot exchange power (P, Q) is known; A system can be firm power load or generator with the another one system equivalent, calculates and relevant static security stability analysis thereby separately one of them system is carried out trend; Trend can be confirmed each branch road trend (P, Q) and each node voltage (U) in the system after calculating.If a system is associated with other system, its transient state and dynamic stability characteristic will receive the influence of interconnected system, when doing this type of network analysis, need be the basis with a plurality of systems or whole network data model.
Under traditional mode, the whole network data model is integrated by each main body institute Maintenance Model and is formed, and is that all main bodys are shared.Fig. 2 analyzes required system data model sketch map for economizing adjusting system, and on the one hand, network analysis will be the basis with the whole network model; On the other hand, each main body is only safeguarded the part in the total system model, and the two certainly exists certain contradiction, and this contradiction shows:
(1) integration of the whole network system model is generally according to carrying out from the subordinate to higher level step by step, integrates each time all by the five-star main body property held wherein, can not effectively bring into play the coordination and the management function of senior main body;
(2) change when a certain main body institute's Maintenance Model or parameter; This variation of inevitable requirement has on the main body of this model at all to be upgraded synchronously; Can't realize this target efficiently, reliably at present, the management and the maintenance work of whole network data model also are heavy burdens simultaneously;
(3) the whole network model of integrating of each power grid operation main body, can not effectively guarantee trend calculate be convergence, trend distributes is rational; This pattern of carrying out the operational mode analysis after all data models are concentrated again and power equipment and model are not in tune by the pattern that different subjects administers and maintains respectively, and can not effectively embody the cooperation relation of control centres at different levels in the power system operating mode Plans And Analysis;
(4) analysis of the whole network system operation mode is in order to realize higher level cooperation; Some the time need adopt the centralized calculation form; The operational mode personnel of relative subject are concentrated on same place a certain period, adopt the artificial form of coordinating, carry out the research of operational mode analysis and control strategy.This cooperation will be the basis with the whole network data model equally; If a certain unit data model maintenance work lags behind; The whole network network analysis work can't effectively be carried out, if a certain device parameter needs to revise in analyzing, all are participated in calculating personnel and all will make amendment to data separately; The cooperation of this artificial tissue has requirement to personnel, time, place in running, limited the convenience of network analysis work, can not make full use of operational mode human resources in the whole network; This cooperation is from initiating, being organized into task division and all need can not effectively guaranteeing the quality and the efficient of cooperating to the direct dependence of " people ".
Through distributed coordination between the distinct device manager and cooperation in the electrical network; Realize the whole network system model structure, maintenance and operational mode management; System model can be served for network analysis again in the while that is effectively protected with providing convenience, become the problem that power system operation and manager have to face.
The electric power system tide computation model can be with reference to " electric power system calculating ", and Xi'an Communications University etc. compile in collaboration with six institutes, and hydraulic and electric engineering publishing house published the 118th page in 1978.
Power system operation mode is analyzed domestic main tool to be had: BPA, PSASP etc.; External main tool has: PSS/E, NETOMAC, EUROSTAG etc.
Summary of the invention
The present invention seeks to: to current domestic operation of power networks management new situations and different stage control centre operational mode characteristics; A kind of construction method that can be applicable to different stage, zones of different control centre, supports coordination therebetween and cooperate, realizes the multistage multi-region interconnected network data model of whole network data modelling and operational mode management is proposed; To solve the electric network model Decentralization, to safeguard problem and the contradiction brought; In establishment of system data model and mode management process; Make full use of at different levels, control centre, various places operational mode human resources; The coordination and the management function at performance high-level scheduling center are safeguarded with the operational mode management grid equipment management, data model and are effectively united, thereby help promoting the cooperation management general layout of electrical network layering, subregion.
Technical solution of the present invention is: the construction method of multistage multi-region interconnected network data model; It is characterized in that: whole network system data are divided according to the dispatching of power netwoks administrative area; Network system each control centre at different levels sets up data model respectively; If exist related between certain two control centre; Then by the equivalent port model of relating dot between these two control centres of upper level control centre definition, the equivalent port model external electrical network system related with each this background network system is corresponding; The system operation mode of electrical network adopts the newspaper plan of next stage control centre, the adjustment of upper level control centre, next stage control centre to revise, and the final collaboration mode of confirming in upper level control centre carries out; The network system operational mode is carried out the multistage multi-region data model combination after confirming, for the upper level control centre, can obtain data model from the subordinate control centre, and the equivalent port model that replacement is corresponding realizes major network and subsystem data model combination; For the subordinate control centre; Can obtain the external electrical network data model corresponding through the higher level control centre with the equivalent port model of local power grid system relationship; Realize subsystem and external electrical network data model combination, so that in big scale of power, the local power grid system is analyzed; And the constraint that the combination of data model is provided with by the data model authority, each control centre can only make up data model in the extent of competence, and data model can not be visited beyond the authority; When the incident that a certain equipment changes in data model, this variation is adopted model to change coping mechanism and in the full electric network system, is handled this incident;
(1) each control centre of multistage power network dispatching system (being the local power grid subsystem) independently set up data model respectively; Through relating dot between the electrical network subsystem is set up equivalent port model; It is the equivalent port model of relating dot between certain two control centre; With inter-related electrical network decoupling zero is a plurality of grid subsystems, and the equivalent port model external electrical network system related with this background network system is corresponding; Equivalent port model is the part in the electric network data model, and its content comprises: port title, two interrelated control centre principal name, tie point bus name and electric pressure, equivalent port form (generator or load) and equivalent port parameters, port trend information (P, Q, U);
(2) each control centre can use local power grid system data model and equivalent port model trend information and carries out trend and calculate and the steady stability safety analysis; The network system method of operation (plan) is confirmed the exchange power between interrelated electrical network subsystem; Higher level control centre carries out trend according to exchange power between local power grid system and external electrical network system and calculates; Confirm and external electrical network system relationship point voltage; Thereby form complete equivalent port model trend information (P; Q; U); Constraints as subordinate's control centre's trend calculating; Realize each control centre's trend calculating successively downwards step by step, each control centre can independently carry out static security analysis on this basis;
(3) data model between the network system control centre is visible; Equivalent port model through the control centre is defined can be obtained other control centres of this control centre's direct correlation, and the data model of these direct correlation control centres is visible for this control centre; Can obtain other control centres of indirect association through other control centre's data model medium value port model, the data model of these indirect association control centres also is visible for this control centre; The data model content comprises flow data (network equipment parameters such as bus, circuit, transformer), stablizes data (equipment and control system parameter such as generator, SVC, direct current) and equivalent port model data;
(4) data model with other control centres is incorporated into local and the combination of local power grid system data model; In fairly large system, the local power grid system is carried out transient state or dynamic stability safety analysis; Data model combination comprises the flow data model, stablizes the combination of data model and equivalent port model, as paired equivalent port occurs, and these two ports are cancelled out each other to the constraints that system load flow distributes; Be converted into a node; Through this node, the data model of different system is communicated with, as paired equivalent port model not occurring; Directly a plurality of system data models are made up, the combination of a plurality of system data models does not influence each system in and exchanges power between trend distribution and system.
Equivalent port model: two network systems of different stage, zones of different (like local power grid and adjacent area electrical network) if between existence related, their external systems each other then, in arbitrary control centre, external system is with equivalent port model embodied.Equivalent port model is paired,, must have the opposing party and receives from certain network system as sending electricity to certain network system a side; The system relationship relation of equivalent port model representative is unique, and a plurality of equivalent port model can not cause the system topological annexation chaotic.Equivalent port model content should comprise: port title, two interrelated control centre principal name, tie point bus title and electric pressure, equivalent port form (generator or load) and equivalent port parameters, port trend information (voltage; Trend is meritorious, idle: numerical value is just being represented to send electricity, numerical value negative indication to receive electricity from local system to local system, and is irrelevant with the port form) etc.; It mainly acts on one is topological incidence relation between the reflection system, the 2nd, and the running status of reflection system.
Operational mode (plan): the two-level scheduler center is through coordinating to confirm relating dot exchange power between system; This exchange power has been confirmed performance number (P, Q) in the equivalent port model trend information; Higher level control centre only can carry out trend according to exchange power between native system and external system and calculate; Confirm and external system relating dot voltage, thereby form complete equivalent port model trend information (P, Q, U), as the constraints of subordinate's control centre's operational mode.The subordinate control centre can carry out tidal current analysis to linchpin system of institute according to equivalent port model trend information; There is not authority to revise the set equivalent port model trend information in higher level control centre; Have only authority adjustment local runtime mode, information constrained to satisfy equivalent port model trend.
Multistage multi-region data model combination: in control centre's data model; The corresponding subordinate control centre (subsystem) of equivalent port model possibility or higher level control centre (major network); The control centre can obtain data model from the control centre of the corresponding external system of equivalent port model; Be introduced in the local system analysis,, then can continue to introduce the other system data model if the data model of introducing also is connected with other external systems; The data model scale of local system analysis can enlarge gradually like this, until the whole network data model is included wherein.The data model of each control centre all is through tidal current analysis and to satisfy equivalent port model trend information constrained, and the trend after the data model combination distributes preceding consistent with combination.
Data model combination comprises the flow data model, stablizes the combination of data model and equivalent port model; As paired equivalent port appears; These two ports are cancelled out each other to the constraints that system load flow distributes; Be converted into a node, through this node, the network model of different system is communicated with; As paired equivalent port model does not appear, directly a plurality of system datas made up.The combination of a plurality of system data models does not influence each system in and exchanges power between trend distribution and system.
The data model authority is provided with: the subordinate control centre obtains the authority of data model and is set by the higher level control centre from the higher level control centre, for the multi-stage scheduling center, this authority is from top to bottom dwindled step by step.The subordinate control centre can only choose in the extent of competence data model or wherein a part be incorporated into during local system analyzes.
Model changes coping mechanism: model changes when a certain control centre; By this control centre's trigger model change events; This model of notification applications carries out other relevant control centres of network analysis; Relevant control centre responds this incident, stops to use this model and carries out network analysis, the line data model modification of going forward side by side.Change if this variation causes local system topology or trend to distribute, then can influence subordinate control centre equivalent port model trend information, after the subordinate control centre adjustment operational mode, other relevant control centres carry out data model again and upgrade; Do not distribute if this variation can not change local system topology or trend, other relevant control centres directly carry out data model and upgrade.
The invention has the beneficial effects as follows: the data model of multistage multi-region interconnected network is set up with maintenance work and is become the dispersion collaboration mode by task division of labor pattern; Be convenient to keep same device model parameter synchronous, help improving the maintenance levels of electric network data model in total system one the whole network operational mode work of making peace; The setting of data model authority is that different managers provide network analysis data model basis in the protection system data with the multistage multi-region data model combination; To satisfy the requirement that different control centres carry out network analysis, help promoting the comprehensive raising of total system analysis level.Be particularly useful for the establishment that electromagnetic looped network unlinks, burst moves the electric power system data model, shared and maintaining method.
Description of drawings
Do further detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 1 electric power system layering and zoning management sketch map
Fig. 2 economizes adjusting system and analyzes corresponding system data model sketch map
Fig. 3 net is economized ground dispatching patcher sketch map, and wherein 3 (a) are that net is economized the ground system schematic, and 3 (b) are that net is economized the control centre, ground and concerned sketch map
Fig. 4 net is economized ground dispatching patcher hardware platform and is implemented configuration diagram
Ground dispatching patcher authority setting of Fig. 5 net province and data model access authority sketch map wherein 5 (a) are data model access authority settings between dispatching patcher, and 5 (b) are provided with each corresponding control centre's authority with access rights
Fig. 6 economizes and transfers A and ground to transfer that relating dot equivalence port model is provided with sketch map between A1
Each control centre's data model sketch map of Fig. 7
Relating dot exchange power setting sketch map between Fig. 8 system
Fig. 9 net transfers the I trend to calculate definite relating dot voltage sketch map between province of netting
Relating dot voltage sketch map between Figure 10 economizes and transfers with transferring the definite province of A trend calculating
Figure 11 economize accent, adjusting data model combination sketch map, wherein 11 (a) economize and transfer A and ground to transfer the A1 data model combination; 11 (b) economize and transfer B and ground to transfer the B1 data model combination.
Embodiment
Realize hardware and the communication support platform of cooperating in the multi-stage scheduling center through computer and network, set up the software work environment, for system as shown in Figure 3, it is as shown in Figure 4 that its hardware platform is implemented framework.The practical implementation step is:
(1) system initialization
(1) each grade control centre is provided with the keeper respectively, and the control centre is registration step by step from top to bottom, when registration, selects its higher level control centre that is subordinate to, and choosing " nothing " is not confirmed by the keeper of upper level control centre.
(2) keeper of higher level control centre requires and the system analysis model demand according to data model access, and the authority of the visit higher level of subordinate control centre and other control centre's data models is set.The higher level control centre has the authority of visit subordinate control centre's data model, and the subordinate control centre can only have the part of higher level control centre data model access authority; Delineation of power is unit with the control centre, if the A of control centre has access scheduling center B authority, then all data models of the B of control centre are addressable to the A of control centre.Authority setting and each control centre of system shown in Figure 3 are as shown in Figure 5 to the access rights of data model.
(3) the operational mode personnel of control centre, various places at different levels registration; The control centre of when registration, selecting it to be subordinate to; The corresponding keeper of control centre confirms, and gives all or part of authority of this control centre's visit data model of accredited personnel and set up data model and the authority of revising data model in this locality.
(2) data model is set up and the mode plan
(1) system manager of higher level control centre; According to the relating dot between this control centre and control centre system of subordinate; Which equivalent port model definite needs are provided with; Distribute to native system operational mode personnel and be provided with, equivalent port model parameter should comprise: port title, two interrelated control centre principal name, relating dot bus title and electric pressure, port form (generator or load type) and parameters thereof, equivalent port model trend information.Equivalent port model trend information (trend power, voltage) is provided with when the operational mode plan, and other parameters are confirmed according to the electrical network actual conditions, are known.
Such as: in the system shown in Figure 3, the equivalent port model between each system is provided with as shown in Figure 6, transfers in the I data model at net, and the form of equivalent port A220 and B220 is load; In economizing accent A data model, equivalent port model A220 form is a generator, and the form of equivalent port model A110-1 and A110-2 is load; In economizing accent B data model, equivalent port model B220 form is a generator, and the form of equivalent port model B110-1 and B110-2 is load; Transfer in A1 and the A2 data model on ground, the form of equivalent port model A110-1 and A110-2 is a generator; Transfer in B1 and the B2 data model on ground, the form of equivalent port model B110-1 and B110-2 is a generator.Each equivalent port model trend information is confirmed in (3).
(2) local system (being the local power grid subsystem) data model is set up; Content is corresponding flow data model and a stable data model of local system; The flow data model comprises grid equipment parameters such as bus, circuit, transformer, and stable data model comprises equipment and control system parameter thereof such as generator, SVC, direct current.Data model can adopt text, form or graphics mode editor, and data model is preserved can adopt text or database form.System shown in Figure 3, the data model of each control centre is as shown in Figure 7.Local system is set up by the upper level control centre with the equivalent port model of the system that links to each other, and is of (1).
(3) according to the system operation mode analyze demands; The add-on system operational mode plan of higher level control centre; Occur in all subordinate control centres as the mode task; The keeper of control centre of subordinate gives native system operational mode personnel with this Task Distribution, and operational mode personnel are responsible for setting up the local system data model corresponding with this mode.This situation need not started from scratch and set up the system data model, can be on basic mode or data with existing model basis, and adjustment generator output, load level and each equipment running status realize that local system is to data model that should operational mode.
Operational mode personnel set up in the process or afterwards at data model; Coordinate scheduled net interchange between corresponding this locality of this mode and external system with the higher level control centre; After the higher level control centre confirmed, (P Q) came the plan of constrained system operational mode as the power in the equivalent port model trend information.Between system exchange power by operational mode personnel people for deciding, generally relevant: as to send electric agreement etc. between the electricity needs of each system and balance, system with following factor.Such as system shown in Figure 3, relating dot exchange power confirms that the back is as shown in Figure 8 between each control centre: net transfers I to transfer A and economize exchange power between the accent B that (P Q) confirms as (P respectively with economizing A220, Q A220) and (P B220, Q B220); Economize and transfer A and ground to transfer the exchange power of A1 and A2 to confirm as (P respectively A110-1, Q A110-1) and (P A110-2, Q A110-2); Economize and transfer B and ground to transfer the exchange power of A1 and A2 to confirm as (P respectively V110-1, Q B110-1) and (P B110-2, Q B110-2).The positive negative indication power flow direction of exchange power, if to system send electricity on the occasion of, if receive electricity then for negative value from system.
After exchange power is confirmed between higher level control centre and external system; With external system equivalence on equivalent port model is firm power (P, Q) generator or load, calculates thereby can independently carry out trend, confirms each branch road trend, each node voltage (part that equivalent port model is the system data model as a node) in the local system; Thereby form complete equivalent port model trend information (P; Q, U), as subordinate control centre operational mode constraints; Realize each control centre's trend calculating successively step by step downwards, each control centre can independently carry out static security analysis on this basis.
(P, Q U) can carry out trend to local system and calculate according to equivalent port model trend information in the subordinate control centre; The power and the voltage of result of calculation medium value port model position (are P; Q, U) not necessarily in full accord with higher level control centre set point, need generated output, load level etc. in the adjustment local data model; It is information constrained finally to make calculation of tidal current satisfy equivalent port model trend, formulates thereby accomplish the system operation mode plan.
Such as equivalent port model trend information between each system in the system shown in Figure 3, like Fig. 9 and shown in Figure 10.Net is transferred the I basis and is economized the exchange power (P that transfers A, B A220, Q A220), (P B220, Q B220), carry out the independent tide flowmeter and calculate each branch road trend and each node voltage in the definite local system in back, also just promptly confirmed to economize the voltage U that accent A, B and net are transferred equivalent port model A220, B220 between the I A220, U B220Economize to transfer A again according to the trend information (P of equivalent port model A220 then A220, Q A220, U A220) and equivalent port A110-1 and A110-2 power information (P A110-1, Q A110-1) and (P A110-2, Q A110-2) carry out the calculation of independent tide flowmeter, the trend information of its medium value port model A220 is as the constraints of trend calculating, thus the voltage U of certainty equivalents port A110-1 and A110-2 A110-1And U A110-2Ground transfers A2 according to equivalent port model A110-1 trend information (P A220-2, Q A220-2, U A110-2) trend of carrying out local system calculates.Economize and transfer B to calculate same province accent A, ground transfers the calculating of A1, B1, B2 to transfer A2 together.
(3) data model combination
(1) data model condition capable of being combined: after the system operation mode plan is formulated; Each control centre's data model all is that trend is calculated convergence and satisfied equivalent port model trend information (P, Q, U) constraint; Other control centre's data models have the authority visit in the corresponding external system of simultaneously equivalent port model; To specifying operational mode, can other control centre's data models be incorporated into this locality, carry out data model combination.
(2) a plurality of system data models make up the combination that comprises the flow data model, stablizes data model and equivalent port model; As paired equivalent port model appears; These two ports will be cancelled out each other to the constraints that system load flow distributes, and be converted into a node, through this node; The network model of different system is communicated with, and the combination of a plurality of system data models can not influence each system in and exchange power between trend distribution and system.System shown in Figure 3 is economized and is transferred A and ground to transfer the A1 data model combination, economize and transfer B and ground to transfer the B1 data model combination shown in figure 11.
(4) network analysis
Each control centre of dispatching patcher uses separately, and data model (comprise local flow data, stablize data and equivalent port model data) can carry out calculating of local system trend and relevant static security stability analysis.If carry out transient state or dynamic stability analysis; On local system data model basis; Also to introduce the other system data model that is associated,, thereby obtain more accurate result so that in fairly large data model, local system is analyzed through data model combination.The network analysis content comprises: tidal current analysis, static security stability analysis, transient stability analysis, the analysis of transient stability nargin, Transient Stability Control analysis of strategies, microvariations stability analysis etc.
(5) system data model maintenance
Control centre's system data model maintenance is distinguished two kinds of situation: the one, and model changes can not change the distribution of local system trend, change like generator and control system parameter thereof, the 2nd, the model variation can change the local system trend and distribute, and changes like line parameter circuit value.
Data model safeguards and is undertaken by each operational mode personnel of control centre that this dispatching patcher keeper confirms that model parameter changes coping mechanism with trigger model after revising and confirming.
If model changes and does not change the distribution of local system trend; Then this variation is only influential to transient state or dynamic stability analysis; Transfer A generator excitation model to change as economizing in Fig. 3 system; By each control centre that economize to transfer its data model of A notice all references (net transfers I, economize transfer B, transfer A1, transfer A2), these control centres are again from economizing the data model of transferring A to obtain all or only change.
If model changes and to have changed the local system trend and distribute, transfer the A line parameter circuit value to change as economizing in Fig. 3 system, handle this variation to subordinate's dispatching patcher (transfer A1, A2) influence that the mode trend distributes, its treatment step is:
(1) economizes accent A and carry out tidal current analysis according to the updated model parameter;
(2) economize accent A renewal and ground and transfer equivalent port model voltage (U between A1, A2 A110-1, U A110-2), and A1, A2 are transferred in notice ground;
(3) transfer A1, A2 to carry out the adjustment of tidal current analysis and operational mode respectively again, it is information constrained to make the trend distribution satisfy up-to-date equivalent port model trend;
(4) economize to transfer the A notice quote the control centre of its data model (net transfers I, economize transfer B, transfer A1, transfer A2) model Updates Information;
(5) transfer A1 notice quote the control centre of its data model (net transfers I, economize transfer A, transfer A2) model Updates Information;
(6) transfer A2 notice quote the control centre of its data model (net transfers I, economize transfer A, transfer A1) model Updates Information.

Claims (5)

1. the construction method of multistage multi-region interconnected network data model; It is characterized in that: whole network system data are divided according to the dispatching of power netwoks administrative area; Network system each control centre at different levels sets up data model respectively; If exist relatedly between certain two control centre, then by the equivalent port model of relating dot between these two control centres of upper level control centre definition, the equivalent port model external electrical network system related with each this background network system is corresponding; The system operation mode of electrical network adopts the newspaper plan of next stage control centre, the adjustment of upper level control centre, next stage control centre to revise, and the final collaboration mode of confirming in upper level control centre carries out; The network system operational mode is carried out the multistage multi-region data model combination after confirming, for the upper level control centre, can obtain data model from the subordinate control centre, and the equivalent port model that replacement is corresponding realizes major network and subsystem data model combination; For the subordinate control centre; Can obtain the external electrical network data model corresponding through the higher level control centre with the equivalent port model of local power grid system relationship; Realize subsystem and external electrical network data model combination, so that in big scale of power, the local power grid system is analyzed; And the constraint that the combination of data model is provided with by the data model authority, each control centre can only make up data model in the extent of competence, and data model can not be visited beyond the authority; When the incident that a certain equipment changes in data model, this variation is adopted model to change coping mechanism and in the full electric network system, is handled this incident;
Said equivalent port model is: if exist between two network systems of different stage, zones of different related, their external systems each other then, in arbitrary control centre, external system is with equivalent port model embodied; Equivalent port model is paired, send electricity in a direction network system, must have the opposing party and receives from certain network system; The system relationship relation of equivalent port model representative is unique; Content comprises: the equivalent port form of port title, two interrelated control centre principal names, tie point bus title and electric pressures, generators or load expression and equivalent port parameter, by voltage; The meritorious port trend information that reaches the idle formation of trend of trend, numerical value is just being represented to send electricity, numerical value negative indication to receive from local system to local system;
(1) each control centre of multistage power network dispatching system independently sets up data model respectively; Through relating dot between the electrical network subsystem is set up equivalent port model; It is the equivalent port model of relating dot between certain two control centre; With inter-related electrical network decoupling zero is a plurality of grid subsystems, and the equivalent port model external electrical network system related with this background network system is corresponding; Equivalent port model is the part in the electric network data model, and its content comprises: port title, two interrelated control centre principal name, tie point bus name and electric pressure, equivalent port form, equivalent port parameter and port trend information;
(2) each control centre can use local power grid system data model and equivalent port model trend information and carries out trend and calculate and the steady stability safety analysis; The network system method of operation is confirmed the exchange power between interrelated electrical network subsystem; Higher level control centre carries out trend based on exchange power between local power grid system and external electrical network system and calculates; Confirm and external electrical network system relationship point voltage, thereby form complete equivalent port model trend information, as the constraints of subordinate's control centre's trend calculating; Realize each control centre's trend calculating successively downwards step by step, each control centre can independently carry out static security analysis on this basis;
(3) data model between the network system control centre is visible; Equivalent port model through the control centre is defined can be obtained other control centres of this control centre's direct correlation, and the data model of these direct correlation control centres is visible for this control centre; Can obtain other control centres of indirect association through other control centre's data model medium value port model, the data model of the control centre of these indirect associations also is visible for this control centre; The data model content comprises flow data, stablizes the data of data and equivalent port model;
(4) data model with other control centres is incorporated into local and the combination of local power grid system data model; In fairly large system, the local power grid system is carried out transient state or dynamic stability safety analysis; Data model combination comprises the flow data model, stablizes the combination of data model and equivalent port model, as paired equivalent port occurs, and these two ports are cancelled out each other to the constraints that system load flow distributes; Be converted into a node; Through this node, the data model of different system is communicated with, as paired equivalent port model not occurring; Directly a plurality of system data models are made up, the combination of a plurality of system data models does not influence each system in and exchanges power between trend distribution and system.
2. according to the construction method of the said multistage multi-region interconnected network of claim 1 data model; It is characterized in that changing when a certain control centre model; Change coping mechanism through model and in total system, handle and to change, keep the consistency of system data model at the whole network; Change the control centre by model and trigger this incident, other relevant control centres respond, and two kinds of situation are arranged:
(1) model changes and does not change the system load flow distribution, this situation, and relevant control centre directly upgrades the native system data model;
(2) model changes and has changed the distribution of local system trend; This situation; At first handle the influence that subordinate's control centre's trend is distributed; Automatically revise with the subordinate control centre between the corresponding equivalent port model trend information of relating dot, and notice subordinate control centre carries out the adjustment of tidal current analysis and operational mode again, it is information constrained to make its system load flow distribution satisfy up-to-date equivalent port model trend; Local system and subordinate's dispatching patcher are notified the control centre that quotes its data model afterwards, obtain data model again.
3. according to the construction method of the said multistage multi-region interconnected network of claim 1 data model; It is characterized in that the step of confirming the network system operational mode is: the two-level scheduler center is through coordinating to confirm relating dot exchange power between system; This exchange power has been confirmed performance number in the equivalent port model trend information; Higher level control centre only can carry out trend according to exchange power between native system and external system and calculate; Confirm and external system relating dot voltage, thereby form complete equivalent port model trend information, as the constraints of subordinate's control centre's operational mode; The subordinate control centre can carry out tidal current analysis to linchpin system of institute according to equivalent port model trend information; There is not authority to revise the set equivalent port model trend information in higher level control centre; Have only authority adjustment local runtime mode, information constrained to satisfy equivalent port model trend.
4. according to the construction method of the said multistage multi-region interconnected network of claim 1 data model; It is characterized in that multistage multi-region data model combination step is: in control centre's data model; Corresponding subordinate control centre of equivalent port model possibility or higher level control centre; The control centre can obtain data model from the control centre of the corresponding external system of equivalent port model, is introduced in the local system analysis, if the data model of introducing also is connected with other external systems; Then can continue to introduce the other system data model, until the whole network data model is included wherein; The data model of each control centre all is through tidal current analysis and to satisfy equivalent port model trend information constrained, and the trend after the data model combination distributes preceding consistent with combination; Data model combination comprises the flow data model, stablizes the combination of data model and equivalent port model; As paired equivalent port appears; These two ports are cancelled out each other to the constraints that system load flow distributes; Be converted into a node, through this node, the network model of different system is communicated with; As paired equivalent port model does not appear, directly a plurality of system datas made up.
5. require the construction method of 1 said multistage multi-region interconnected network data model according to letter of authorization; It is characterized in that the setting of data model authority: the subordinate control centre obtains the authority of data model and is set by the higher level control centre from the higher level control centre; For the multi-stage scheduling center; This authority is from top to bottom dwindled step by step, the subordinate control centre can only choose in the extent of competence data model or wherein a part be incorporated into during local system analyzes.
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