CN109800944B - Dispatcher load flow calculation method based on cloud calculation - Google Patents
Dispatcher load flow calculation method based on cloud calculation Download PDFInfo
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- CN109800944B CN109800944B CN201811517599.0A CN201811517599A CN109800944B CN 109800944 B CN109800944 B CN 109800944B CN 201811517599 A CN201811517599 A CN 201811517599A CN 109800944 B CN109800944 B CN 109800944B
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The invention discloses a dispatcher load flow calculation method based on cloud computing, which can automatically allocate calculation resources of dispatcher load flow according to user information for traditional dispatcher load flow, support multi-user operation without influencing each other, and push different load flow calculation results according to the user information; the cloud terminal concentrates information such as power flow out-of-limit, overloading and transfer concerned by a dispatcher on a main picture, and the inquiry and operation are integrated in the same main picture, so that the functions of equipment operation, calculation result check and the like can be facilitated when a power flow calculation function is used, and the use habit better conforms to the application requirement of off-line calculation and the use habit of a user, so that the method is complete in function as power flow calculation and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of power system load flow, and particularly relates to a dispatcher load flow calculation method based on cloud calculation.
Background
With the development of the power industry, the capacity of the power grid is continuously expanded. The interconnected large power grid is formed rapidly; the appearance of large units, interconnected large power grids and ultrahigh voltage remote power transmission lines has stricter requirements on the safety, stability and economic operation of the power grids, so that a dispatching automation System (SCADA) which can automatically acquire data and monitor and control the operation of a power system in real time can be produced. The relevant auxiliary high-level application software is upgraded accordingly. Wherein the dispatcher trend is the most one and the most basic one used in the dispatcher application high-level application software. The dispatcher trend function can be used correctly by the dispatcher. With the assistance of the method, the operation condition of the power grid is analyzed, and correct judgment and decision are made so as to take necessary measures to timely treat accidents and abnormal conditions. The method has great significance for ensuring the safe, economic and reliable operation of the power system.
The dispatcher trend module is the most basic network analysis tool and analyzes the operation state of the system in a given operation mode. The method analyzes the calculation result of the load flow by setting operation under a certain operation mode, changing the operation mode, analyzing the load flow distribution and the load flow calculation characteristic of the current system, and analyzing various heavy load monitoring, limit value inspection, network loss analysis and the like.
Dispatcher load flow calculation is the basis of power system analysis, and plays an important role in ensuring the safety and stability of power grid operation, preventing misoperation and the like. The existing power flow calculation method has been successfully applied to the power system energy management system 1 area. However, in the area iii, the application of multi-user simulated tidal current operation cannot be fully expanded in late, on one hand, the display mode based on the CS mode architecture often needs to be configured on a workstation, and the display is not simple and clear, and on the other hand, the traditional regulation and control system has insufficient elastic expansion support for multiple users. With the further expansion of the power grid scale, the efficiency of the traditional power flow display and adjustment method is too low, and in order to improve the automatic application level of power flow calculation, it is urgently needed to integrate all services in the power flow display of a modern large power grid system, so that the traditional power flow display method is replaced by the method which is easy to deploy and operate and clear in key information.
Based on the above analysis, the conventional trend demonstration and adjustment method cannot meet the current development needs and needs to be improved, and the scheme is generated accordingly.
Disclosure of Invention
The invention aims to provide a dispatcher load flow calculation method based on cloud calculation, aiming at the problems that the traditional load flow display method is low in efficiency, inconvenient to operate and mutually influenced during multi-user operation. The scheme of the invention is easy to deploy, has a direct and clear display mode, can support simultaneous operation of multiple users without mutual influence, has conditions for application in an actual power system, and has a good application prospect.
In order to achieve the purpose, the invention adopts the technical scheme that:
a dispatcher load flow calculation method based on cloud calculation comprises the following steps,
step (1), a user logs in a power flow main page to form an independent power flow calculation resource;
embedding relevant information of regions, stations and equipment into the main tidal current page, and enabling a user to quickly inquire and position the relevant regions, stations and equipment and conveniently adjust a tidal current mode to obtain tidal current calculation information;
step (3), pushing out the tidal current out-of-limit and transfer information in the user belonging responsibility area from high to low according to the user belonging responsibility area and the out-of-limit rate in the tidal current main page;
step (4), a user directly checks out the out-of-limit adjustment strategy according to the load flow out-of-limit information calculated by the load flow;
and (5) after the user does not use the load flow for a long time or clicks logout, releasing the load flow calculation resource by the system.
Preferably, in step (1), the step of forming an independent power flow calculation resource further includes the steps of:
before a user uses load flow calculation, a scheduling control platform system lists load flow resources which are already operated on line; the user selects to directly enter the load flow calculation, and the system automatically starts new load flow resources in the nodes and automatically names the load flow resources according to the existing load flow resources and the load balance condition of the system, so as to ensure that load flow operations of all users are not influenced.
Preferably, in step (1), the step of forming an independent power flow calculation resource further comprises the steps of:
and the user selects to create a new trend resource, and self-defines and names the new trend resource so as to facilitate searching.
Preferably, in the step (2), the step of quickly positioning the user to the relevant area, station and device and conveniently performing the tidal current mode adjustment operation in the tidal current main page further includes the following steps:
(2-1), directly switching to relevant areas, stations and equipment in the main page of the load flow calculation without switching for many times;
and (2-2) directly adjusting the output and the load of the area by a user on the corresponding area primitive, or directly switching to a station under the area in the area primitive, adjusting the output load of the generator load and performing load flow operation of the line main transformer during shutdown and operation in the station diagram, and performing load flow calculation.
Preferably, in the step (3), the step of pushing the power flow out-of-limit and transfer information in the responsibility area to which the user belongs from high to low according to the responsibility area to which the user belongs and the out-of-limit rate further comprises the following steps:
after the load flow calculation is completed, the system pushes out the out-of-limit and transferred load flow information in the user responsibility area from high to low according to the information of the current user login responsibility area and the out-of-limit rate.
Preferably, in the step (4), the step of the user directly checking the out-of-limit adjustment strategy according to the power flow out-of-limit information calculated by the power flow further includes the following steps:
and the user directly clicks and checks the optimal adjustment strategy for eliminating the out-of-limit equipment information according to the out-of-limit information calculated by the current load flow, and the decision is quickly made.
Preferably, in the step (5), after the user does not use the power flow for a long time or clicks logout, the step of the system releasing the power flow calculation resource further includes the following steps:
the scheduling control system records the time of creating each power flow resource, and if the time of using the power flow resource by a user exceeds the longest time of the specified power flow resource, or the user manually logs out the power flow resource, the regulation and control system releases the power flow resource.
Compared with the prior art, the invention has the beneficial effects that: 1) the technical scheme of the invention is realized based on the BS mode, the method can realize the strategies of flow information browsing, flow mode adjustment and out-of-limit branch adjustment on one main page, and each scheduling simultaneous operation does not influence the respective result, thereby simplifying the operation steps of a dispatcher and improving the display efficiency; 2) according to the method, each user uses an independent load flow computing resource based on cloud computing, the load flow resource is bound with the user, and the display efficiency is improved; 3) the technical scheme of the invention is easy to deploy, has a direct and clear display mode, can support simultaneous operation of multiple users without mutual influence, has conditions for application in an actual power system, and has a good application prospect.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a dispatcher load flow calculation method based on cloud computing, comprising the following steps,
and (1) a user logs in a load flow main page to form an independent load flow calculation resource.
Further, before the user uses the load flow calculation, the scheduling control platform system lists the load flow resources which are already operated on line; the user selects to directly enter the load flow calculation, and the system automatically starts new load flow resources in the nodes and automatically names the load flow resources according to the existing load flow resources and the load balance condition of the system, so as to ensure that load flow operations of all users are not influenced. Or, after logging in the trend main page, the user can define a new trend resource name to facilitate searching. The new tidal current resources are independent from the existing tidal current resources.
And (2) embedding relevant information of the areas, the stations and the equipment into the main tidal current page, and enabling a user to quickly inquire and position the relevant areas, the stations and the equipment, and conveniently adjusting a tidal current mode to obtain tidal current calculation information.
Furthermore, areas, stations and equipment can be directly switched to in the main page of the load flow calculation, and multiple times of switching are not needed.
On the corresponding area primitive, a user can check the output and the load of the current area, on the basis, the user can directly pull the size of the primitive to adjust the output and the load of the area, and the area primitive can also be directly switched to a plant station catalog under the area, so that the output load adjustment of the generator load, the outage and the operation of a main transformer of a line and other load flow operations are carried out in the plant station chart, and the load flow calculation is carried out.
And (3) pushing out the tidal current out-of-limit and transfer information in the user belonging responsibility area from high to low according to the user belonging responsibility area and the out-of-limit rate in the tidal current main page. After the load flow calculation is completed, the system pushes out the out-of-limit and transferred load flow information in the user responsibility area from high to low according to the information of the current user login responsibility area and the out-of-limit rate. The threshold crossing rate refers to the severity of the tidal current threshold crossing.
And (4) directly checking the out-of-limit adjustment strategy by the user according to the load flow out-of-limit information calculated by the load flow. And the user directly clicks and checks the optimal adjustment strategy for eliminating the out-of-limit equipment information according to the out-of-limit information calculated by the current load flow, and the decision is quickly made.
And (5) after the user does not use the load flow for a long time or clicks logout, releasing the load flow calculation resource by the system. The scheduling control system records the time of creating each power flow resource, and if the time of using the power flow resource by a user exceeds the longest time of the specified power flow resource, or the user manually logs out the power flow resource, the regulation and control system releases the power flow resource.
According to the method, the information obtained by load flow calculation after the adjustment is carried out according to the load flow mode is directly listed on the main page, the load flow out-of-limit and the load flow transfer information of all the areas are directly listed, the out-of-limit adjustment strategy can be checked by clicking on the load flow out-of-limit information of the area to which the user belongs, compared with the traditional load flow, the method needs one-layer switching page for searching, and the scheduling efficiency is effectively improved.
The invention provides a dispatcher load flow calculation method based on cloud computing, which can automatically allocate calculation resources of dispatcher load flow according to user information for traditional dispatcher load flow, support multi-user operation without influencing each other, and push different load flow calculation results according to the user information; the cloud terminal concentrates information such as power flow out-of-limit, overloading and transfer concerned by a dispatcher on a main picture, and the inquiry and operation are integrated in the same main picture, so that the functions of equipment operation, calculation result check and the like can be facilitated when a power flow calculation function is used, and the use habit better conforms to the application requirement of off-line calculation and the use habit of a user, so that the method is complete in function as power flow calculation and has good application prospect.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A dispatcher load flow calculation method based on cloud computing is characterized by comprising the following steps,
step (1), a user logs in a power flow main page to form an independent power flow calculation resource; further comprising:
before a user uses load flow calculation, a scheduling control platform system lists load flow resources which are already operated on line; the user selects to directly enter the load flow calculation, and the system automatically starts new load flow resources in the nodes and automatically names the load flow resources according to the existing load flow resources and the load balance condition of the system so as to ensure that load flow operations of all users are not influenced;
embedding relevant information of regions, stations and equipment into the main tidal current page, and enabling a user to quickly inquire and position the relevant regions, stations and equipment and conveniently adjust a tidal current mode to obtain tidal current calculation information;
step (3), pushing out the tidal current out-of-limit and transfer information in the user belonging responsibility area from high to low according to the user belonging responsibility area and the out-of-limit rate in the tidal current main page;
step (4), a user directly checks out the out-of-limit adjustment strategy according to the load flow out-of-limit information calculated by the load flow;
and (5) after the user does not use the load flow for a long time or clicks logout, releasing the load flow calculation resource by the system.
2. The dispatcher power flow calculation method based on cloud computing as recited in claim 1, wherein in the step (1), the step of forming an independent power flow calculation resource further comprises the steps of:
and the user selects to create a new trend resource, and self-defines and names the new trend resource so as to facilitate searching.
3. The dispatcher power flow calculation method based on cloud computing as claimed in claim 1, wherein in the step (2), the step of quickly locating the user to the relevant area, station and device and conveniently performing the power flow mode adjustment operation in the power flow main page further comprises the following steps:
(2-1), directly switching to relevant areas, stations and equipment in the main page of the load flow calculation without performing multiple switching;
and (2-2) directly adjusting the output and the load of the area by a user on the corresponding area primitive, or directly switching to a station under the area in the area primitive, adjusting the output load of the generator load and performing load flow operation of the line main transformer during shutdown and operation in the station diagram, and performing load flow calculation.
4. The dispatcher power flow calculation method based on cloud computing as claimed in claim 1, wherein in the step (3), the step of pushing the power flow violation and transfer information in the user belonging responsibility area from high to low according to the user belonging responsibility area and the violation rate in the power flow main page further comprises the following steps:
after the load flow calculation is completed, the system pushes out the out-of-limit and transferred load flow information in the user responsibility area from high to low according to the information of the current user login responsibility area and the out-of-limit rate.
5. The dispatcher power flow calculation method based on cloud computing as claimed in claim 1, wherein in the step (4), the step of the user directly checking the adjustment strategy of the violation according to the power flow violation information of the power flow calculation further comprises the following steps:
and the user directly clicks and checks the optimal adjustment strategy for eliminating the out-of-limit equipment information according to the out-of-limit information calculated by the current load flow, and the decision is quickly made.
6. The dispatcher power flow calculation method based on cloud computing as claimed in claim 1, wherein in the step (5), after the user does not use the power flow for a long time or clicks logout, the step of releasing the power flow calculation resource by the system further comprises the following steps:
the scheduling control system records the time of creating each power flow resource, and if the time of using the power flow resource by a user exceeds the longest time of the specified power flow resource, or the user manually logs out the power flow resource, the regulation and control system releases the power flow resource.
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