CN103066594A - Power grid risk pre-controlling method based on province power grid topology and city power grid topology and county power grid topology - Google Patents
Power grid risk pre-controlling method based on province power grid topology and city power grid topology and county power grid topology Download PDFInfo
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Abstract
The invention relates to a power grid risk pre-controlling method based on a province power grid topology and a city power grid topology and a county power grid topology. The power grid risk pre-controlling method based on the province power grid topology and the city power grid topology and the county power grid topology comprises the steps of building a power grid dispatching network model comprising a provincial level power grid dispatching network, a power grid dispatching network model comprising a city level power grid dispatching network and a power grid dispatching network model comprising a county level power grid dispatching network, carrying out fast interconnection and rebuilding of the three power grid dispatching network models, basic dispatching data and historical data are input into a system database through a system server and updating the data in real time, building a province dispatching power grid graph, a city dispatching power grid graph and a county dispatching power grid graph and then building corresponding risk pre-controlling schemes based on the province dispatching power grid graph, the city dispatching power grid graph and the county dispatching power grid graph, carrying out association of the three power grid risk pre-controlling schemes according to a province topology, a city topology and a county topology, and automatically forming an interconnection and interworking grid risk pre-controlling scheme based on the three topologies. According to the power grid risk pre-controlling method based on the province power grid topology and the city power grid topology and the county power grid topology, a dispatching pre-controlling system which is integral, interconnected in the three-level topologies and integral in province and county is built, fast technical support is provided for power grid to respond to emergencies, and emergency processing ability for responding to emergencies is greatly improved.
Description
Technical field
The invention belongs to power system dispatching control technology field, especially a kind of power grid risk pre-control method based on province's three grades of power network topologies in ground county.
Background technology
In the power scheduling control system, prediction scheme sequencing, standardization are the important foundations of quick and precisely processing power grid accident.The dispatcher is after obtaining accurately accident information; according to the type of accident and the information such as power failure range behind automatic safety device, protection action situation and the switch trip; start targetedly the corresponding standard prediction scheme set in advance, can fast, accurately carry out accident treatment and restore electricity.For making dispatcher and operations staff that adequate preparation be arranged, the dispatcher orders operation correctly, and it is accurate rapidly that the substation operation personnel carry out instruction, reaches the purpose of power scheduling zero defect.At present in province's three grades of dispatching patchers in ground county of electric power system, the quick Ability of emergency management that how improves the dispatching of power netwoks control system by the power grid risk pre-control method is present problem in the urgent need to address.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of reasonable in design, can quick and precisely carry out the power grid risk pre-control method based on province's three grades of power network topologies in ground county that power grid accident is processed.
The present invention solves existing technical problem and takes following technical scheme to realize:
A kind of power grid risk pre-control method based on province's three grades of power network topologies in ground county may further comprise the steps:
Step 1: foundation comprises three grades of dispatching of power netwoks network models of provincial power network dispatch network, region dispatching of power netwoks network, County Power Grid dispatch network and carries out the quick interconnected reconstruction of three grades of dispatching of power netwoks network models;
Step 2: system server imports in the system database basic data dispatching and historical data and the real-time update data;
Step 3: set up province transfer, transfer, the county transfers and sets up separately Risk Pre-control scheme based on grid graphs at different levels;
Step 4: system carries out association according to province's three grades of topologys in ground county with power grid risk pre-control schemes at different levels;
Step 5: automatically form the power grid risk pre-control scheme that interconnects up and down based on three grades of power network topologies.
And the method for the quick interconnected reconstruction of three grades of dispatching of power netwoks network models of described step 1 is:
⑴ obtain outer net at line model and carry out equivalence at this model and process, and obtains a rational external network equivalent model;
⑵ obtain Intranet SCADA data, gets rid of bad data, carries out the internal electric network state estimation, obtains an in real time interior pessimistic concurrency control with certain accuracy;
⑶ merge External network model and Intranet real-time model, obtain complete electric network model, regulate that outer net relevant generator and load inject so that voltage and the interconnection power match of outer net boundary node voltage and the injecting power boundary node corresponding with Intranet, the state of assurance internal network part is constant.
And described external network equivalent method adopts people having the same aspiration and interest Dynamic Equivalence, and reserve part buffering net is to improve equivalent precision.
And, the method that described step 2 system server imports data is: take energy management system as main reduced model, with the XML file of electrical network CIM topological model and SVG form grid graph file as data medium, with switchgear information, switch history, real time data, once supply history, real time data, frequency is historical, real time data is docked in the system database.
And the method that described step 5 forms automatically based on the power grid risk pre-control scheme that interconnects up and down of three grades of power network topologies is:
For the city transfer, transfer, the county transfers three grades of scheduling weak links to work out corresponding prediction scheme;
⑵ system is associated with document management prediction scheme with figure, figure adopts the signal of key equipment network connection, safeguards that take transformer station as unit figure is with related;
Realize province transfer, transfer, the procedure management such as establishment that the county transfers three grades of scheduling accident predictions, audit, approval, network issue;
⑷ utilize three grades of topological structure of electric to realize the association interlock that the city transfers, the superior and the subordinate's scheduling prediction scheme is transferred in various places.
And, describedly utilize three grades of topological structure of electric to realize that cities transfer, various places transfer the method for the association interlock of the superior and the subordinate's scheduling prediction scheme to be: system according to the dual scheduling boundary point of the superior and the subordinate as the interlock point, power supply backward table according to responsible consumer, it is related that the accident prediction of the city being transferred the voltage levels electrical network administer and area power grid accident prediction partly carry out, and forms vertical interconnected the whole network accident prediction hierarchy of control.
Advantage of the present invention and good effect are:
The present invention is according to province's three grades of topological structure of electric in ground county, the principle of multiple constraints and economic dispatch, adopt the method for full mesh topology analysis and engineering experience combination, finished unified, the superior and the subordinate's topology is interconnected, economize ground integrated scheduling pre-control system, the little regional low frequency control strategy of anticipation system, can the real time monitoring power grid risk dynamically, dynamically adjust the pre-control scheme, the help user makes a good job of work separately, thereby dynamically, efficiently, economical, the operation of safely control decision system, for the electrical network solution of emergent event provides the rapid technology support, increase substantially the solution of emergent event Ability of emergency management.
Embodiment
Below the embodiment of the invention is further described.
A kind of power grid risk pre-control method based on province's three grades of power network topologies in ground county comprises the steps:
Step 1: foundation comprises three grades of dispatching of power netwoks network models of provincial power network dispatch network, region dispatching of power netwoks network, County Power Grid dispatch network and carries out the quick interconnected reconstruction of three grades of dispatching of power netwoks network models;
In this step, the method of setting up three grades of dispatching of power netwoks network models is: 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 respectively data model, if exist related between certain two control centre, then dispatch the equivalent port model of relating dot between these two control centres of definition by the higher level, 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 subordinate's scheduling newspaper plan, higher level to dispatch adjustment, subordinate's scheduling modification, and the collaboration mode that the higher level dispatches final affirmation carries out; The network system operational mode is carried out the multistage multi-region data model combination after determining, for higher level's scheduling, can obtain data model from the subordinate control centre, replaces corresponding equivalent port model, realizes major network and subsystem data model combination; For the subordinate control centre, can obtain the external electrical network data model corresponding with the equivalent port model of local power grid system relationship by the higher level control centre, realize subsystem and external electrical network data model combination, so that in larger electrical network scale, the local power grid system is analyzed; And the constraint that the combination of data model is arranged by the data model authority, every one-level scheduling can only be made up data model in the extent of competence, and data model can not be accessed beyond the authority; When the event that a certain equipment changes in data model, this variation is adopted model to change coping mechanism and process this event in the full electric network system;
In this step, the method for the quick interconnected reconstruction of three grades of dispatching of power netwoks network models is:
⑴ obtain outer net at line model and carry out equivalence at this model and process, and obtains a rational external network equivalent model.Need to take into account the requirement that static security analysis, transient security analysis and voltage security are analyzed this moment, and external network equivalent adopts people having the same aspiration and interest Dynamic Equivalence, and reserve part buffering net is to improve equivalent precision.
⑵ obtain Intranet SCADA data, gets rid of bad data, carries out the internal electric network state estimation, obtains an in real time interior pessimistic concurrency control with certain accuracy.
⑶ merge External network model and Intranet real-time model, obtain complete electric network model, regulate that outer net relevant generator and load inject so that voltage and the interconnection power match of outer net boundary node voltage and the injecting power boundary node corresponding with Intranet, the state of assurance internal network part is constant.
Step 2: system server imports in the system database basic data dispatching and historical data and the real-time update data;
In this step, the method that system server imports data is: take energy management system as main reduced model, with the XML file of electrical network CIM topological model and SVG form grid graph file as data medium, with switchgear information, switch history, real time data, once supply history, real time data, frequency is historical, real time data is docked in the system database.
Step 3: set up province transfer, transfer, the county transfers and sets up separately Risk Pre-control scheme based on grid graphs at different levels;
Step 4: system carries out association according to province's three grades of topologys in ground county with power grid risk pre-control schemes at different levels;
Step 5: automatically form the power grid risk pre-control scheme that interconnects up and down based on three grades of power network topologies;
When the power grid risk pre-control scheme that interconnects up and down that forms based on three grades of power network topologies, may further comprise the steps:
For the city transfer, transfer, the county transfers three grades of scheduling weak links to work out corresponding prediction scheme;
⑵ system is associated with document management prediction scheme with figure, figure adopts the signal of key equipment network connection, safeguards that take transformer station as unit figure is with related.Can by the related corresponding equipment of point diagram, carry out prediction scheme operation establishment in the establishment prediction scheme process; By the prediction scheme document, can navigate to the relevant key equipment on the figure, on figure, can consult this device-dependent prediction scheme measure.
Realize province transfer, transfer, the procedure management such as establishment that the county transfers three grades of scheduling accident predictions, audit, approval, network issue;
⑷ utilize three grades of topological structure of electric to realize the association interlock that the city transfers, the superior and the subordinate's scheduling prediction scheme is transferred in various places;
In this step, utilize three grades of topological structure of electric to realize that the city transfers, various places transfer the method for the association interlock of the superior and the subordinate's scheduling prediction scheme to be: system can be according to the dual scheduling boundary point of the superior and the subordinate as the interlock point, power supply backward table according to responsible consumer, it is related that the accident prediction of the city being transferred the voltage levels electrical network administer and area power grid accident prediction partly carry out, and forms vertical interconnected the whole network accident prediction hierarchy of control.
It is emphasized that; embodiment of the present invention is illustrative; rather than determinate; therefore the present invention includes and be not limited to the embodiment described in the embodiment; every other execution modes that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope of protection of the invention equally.
Claims (6)
1. power grid risk pre-control method based on the three grades of power network topologies in province ground county is characterized in that: may further comprise the steps:
Step 1: foundation comprises three grades of dispatching of power netwoks network models of provincial power network dispatch network, region dispatching of power netwoks network, County Power Grid dispatch network and carries out the quick interconnected reconstruction of three grades of dispatching of power netwoks network models;
Step 2: system server imports in the system database basic data dispatching and historical data and the real-time update data;
Step 3: set up province transfer, transfer, the county transfers and sets up separately Risk Pre-control scheme based on grid graphs at different levels;
Step 4: system carries out association according to province's three grades of topologys in ground county with power grid risk pre-control schemes at different levels;
Step 5: automatically form the power grid risk pre-control scheme that interconnects up and down based on three grades of power network topologies.
2. the power grid risk pre-control method based on the three grades of power network topologies in province ground county according to claim 1, it is characterized in that: the method for the quick interconnected reconstruction of three grades of dispatching of power netwoks network models of described step 1 is:
⑴ obtain outer net at line model and carry out equivalence at this model and process, and obtains a rational external network equivalent model;
⑵ obtain Intranet SCADA data, gets rid of bad data, carries out the internal electric network state estimation, obtains an in real time interior pessimistic concurrency control with certain accuracy;
⑶ merge External network model and Intranet real-time model, obtain complete electric network model, regulate that outer net relevant generator and load inject so that voltage and the interconnection power match of outer net boundary node voltage and the injecting power boundary node corresponding with Intranet, the state of assurance internal network part is constant.
3. the power grid risk pre-control method based on the three grades of power network topologies in province ground county according to claim 2, it is characterized in that: described external network equivalent method adopts people having the same aspiration and interest Dynamic Equivalence, and reserve part buffering net is to improve equivalent precision.
4. the power grid risk pre-control method based on the three grades of power network topologies in province ground county according to claim 1, it is characterized in that: the method that described step 2 system server imports data is: take energy management system as main reduced model, with the XML file of electrical network CIM topological model and SVG form grid graph file as data medium, with switchgear information, switch history, real time data, once supply history, real time data, frequency is historical, real time data is docked in the system database.
5. the power grid risk pre-control method based on the three grades of power network topologies in province ground county according to claim 1, it is characterized in that: the method that described step 5 forms automatically based on the power grid risk pre-control scheme that interconnects up and down of three grades of power network topologies is:
For the city transfer, transfer, the county transfers three grades of scheduling weak links to work out corresponding prediction scheme;
⑵ system is associated with document management prediction scheme with figure, figure adopts the signal of key equipment network connection, safeguards that take transformer station as unit figure is with related;
Realize province transfer, transfer, the procedure management such as establishment that the county transfers three grades of scheduling accident predictions, audit, approval, network issue;
⑷ utilize three grades of topological structure of electric to realize the association interlock that the city transfers, the superior and the subordinate's scheduling prediction scheme is transferred in various places.
6. the power grid risk pre-control method based on the three grades of power network topologies in province ground county according to claim 5, it is characterized in that: describedly utilize three grades of topological structure of electric to realize that cities transfer, various places transfer the method for the association interlock of the superior and the subordinate's scheduling prediction scheme to be: system according to the dual scheduling boundary point of the superior and the subordinate as the interlock point, power supply backward table according to responsible consumer, it is related that the accident prediction of the city being transferred the voltage levels electrical network administer and area power grid accident prediction partly carry out, and forms vertical interconnected the whole network accident prediction hierarchy of control.
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Application publication date: 20130424 |