CN110310048B - Distribution network planning overall process evaluation method and device - Google Patents
Distribution network planning overall process evaluation method and device Download PDFInfo
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- CN110310048B CN110310048B CN201910617837.3A CN201910617837A CN110310048B CN 110310048 B CN110310048 B CN 110310048B CN 201910617837 A CN201910617837 A CN 201910617837A CN 110310048 B CN110310048 B CN 110310048B
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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 application discloses a distribution network planning whole process evaluation method and device, wherein three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data are respectively extracted from operation data of multi-system multi-professional equipment, and then integrated data are preprocessed to obtain preprocessed data; analyzing a distribution network problem base evaluation strategy, a distribution network planning project evaluation strategy and a planning construction effect evaluation strategy by analyzing and calculating preprocessing data through tide; and generating a corresponding problem library and a project library according to the strategies, and evaluating whether the manually generated problem library and project library are feasible, useful and comprehensive. According to the distribution network planning management and control requirements, the distribution network business data are integrated based on the multi-professional data, the distribution network planning problem library and the distribution network planning project are calculated and evaluated, automatic evaluation on the distribution network planning problems, the distribution network planning project and the planning project construction effect is conveniently carried out, and the whole distribution network planning process is effectively evaluated.
Description
Technical Field
The application relates to the technical field of power systems, in particular to a distribution network planning overall process evaluation method and device.
Background
The current domestic evaluation of the processes such as 'problems, projects, construction success' and the like in the distribution network planning is established on the basis of a manual qualitative evaluation mode, and the whole evaluation process lacks quantitative analysis means, so that the evaluation workload of each process link of the distribution network planning is large, and the evaluation result cannot accurately reflect the actual execution condition of the planning. Therefore, how to effectively evaluate the whole process of the distribution network planning is a urgent problem for those skilled in the art.
Disclosure of Invention
The application provides a method and a device for evaluating the whole process of distribution network planning, which can effectively evaluate the process of distribution network planning.
The application provides a distribution network planning overall process evaluation method, which comprises the following steps:
respectively extracting three-phase imbalance data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data from operation data of multi-system multi-professional equipment;
integrating three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data to perform preprocessing, so as to obtain preprocessed data;
calculating the preprocessing data through tide analysis, and analyzing a distribution network problem base evaluation strategy, a distribution network planning project evaluation strategy and a planning construction effect evaluation strategy;
respectively acquiring a manual planning problem library, a manual planning project library and an developed planning project library;
generating a distribution network problem library according to the distribution network problem library evaluation strategy, and evaluating the manual planning problem library by adopting the distribution network problem library to obtain an evaluation result;
generating a distribution network project library according to the distribution network project evaluation strategy, and evaluating the manual planning project library by adopting the distribution network project library to obtain an evaluation result;
and generating a construction effect project library according to the planning construction effect evaluation strategy, and evaluating the developed planning project library by adopting the construction effect project library to obtain an evaluation result.
Optionally, the operation data of the multi-system multi-professional device is data obtained from a production management system, a SCADA system and a metering automation system respectively.
Optionally, the obtaining the evaluation result includes:
analyzing whether a net rack weak point exists; the grid weak point comprises at least one of unsatisfied N-1, heavy overload, low voltage, overlong power supply radius and high line loss rate;
if the net rack weak point does not exist, the evaluation result is feasible, otherwise, the evaluation result is not feasible.
Optionally, the analyzing whether the grid weak point exists includes:
giving out node data of a certain node in the distribution network; the node data comprises voltage, current, power data and line loss data;
and comparing the node data with the corresponding standard values in the manual planning problem library, the manual planning project library or the developed planning project library, and if the node data does not accord with the standard values, judging that the current node is a net rack weak point.
The application also provides a distribution network planning overall process evaluation device, which comprises:
the data acquisition module is used for respectively extracting three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data from the operation data of the multi-system multi-professional equipment; the system is also used for respectively acquiring a manual planning problem library, a manual planning project library and a developed planning project library;
the preprocessing module is used for integrating three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data to perform preprocessing so as to obtain preprocessed data;
the strategy acquisition module is used for calculating the preprocessing data through tide analysis and analyzing a distribution network problem base assessment strategy, a distribution network planning project assessment strategy and a planning construction effect assessment strategy;
the evaluation module is used for generating a distribution network problem library according to the distribution network problem library evaluation strategy, generating a distribution network project library according to the distribution network planning project evaluation strategy, and generating a construction effect project library according to the planning construction effect evaluation strategy; and evaluating the manual planning problem library, the manual planning project library and the developed planning project library by adopting the distribution network problem library, the distribution network project library and the construction effect project library respectively to obtain an evaluation result.
Optionally, the operation data of the multi-system multi-professional device is data obtained from a production management system, a SCADA system and a metering automation system respectively.
Optionally, the evaluation module further includes:
the analysis unit is used for analyzing whether the net rack weak points exist or not; the grid weak points comprise at least one of unsatisfied N-1, heavy overload, low voltage, overlong power supply radius and high line loss rate.
Optionally, the analysis unit includes:
the data acquisition subunit is used for giving out node data of a certain node in the distribution network; the node data comprises voltage, current, power data and line loss data;
and the comparison subunit is used for comparing the node data with the corresponding standard value in the manual planning problem library, the manual planning project library or the developed planning project library, and if the node data is not matched with the standard value, judging that the current node is a net rack weak point.
As can be seen from the above technical solutions, the present application provides a method and apparatus for evaluating the overall process of distribution network planning, wherein three-phase imbalance data, low-voltage heavy overload data, line high-loss data, power supply reliability index and distribution network frame data are respectively extracted from the operation data of multi-system multi-professional equipment, and then these are integrated and preprocessed to obtain preprocessing data; analyzing a distribution network problem base evaluation strategy, a distribution network planning project evaluation strategy and a planning construction effect evaluation strategy by analyzing and calculating preprocessing data through tide; and respectively generating a corresponding problem library and a corresponding project library according to the strategies, so as to effectively evaluate whether the manually generated problem library and the manually generated project library are feasible, useful and comprehensive. According to the technical scheme, according to the distribution network planning management and control requirements, distribution network business data are integrated based on multi-professional data, an evaluation strategy is calculated on a distribution network planning problem base and distribution network planning projects, and then automatic evaluation can be carried out on distribution network planning problems, distribution network planning projects and planning project construction effects, so that the whole process of distribution network planning is effectively evaluated.
Drawings
For a clearer description of the technical solutions of the present application, the drawings that are necessary for the implementation will be briefly described, it being obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a flowchart of a method for evaluating an overall process of planning a distribution network according to an embodiment of the present application;
fig. 2 is a block diagram of a configuration diagram of a whole process evaluation device for planning a distribution network according to an embodiment of the present application;
fig. 3 is a flowchart of obtaining each evaluation result according to an embodiment of the present application.
Detailed Description
In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for evaluating an overall process of planning a distribution network according to an embodiment of the present application. As shown in fig. 1, the method includes:
s101, respectively extracting three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network rack data from operation data of multi-system multi-professional equipment; the operation data of the multi-system multi-professional equipment are data obtained from a production management system, a SCADA system and a metering automation system respectively.
Specifically, the data of the transformer area, residents and 10kV private line metering are respectively obtained from the metering automation system, 35kV-110kV tide operation data and 10kV public line outlet circuit breaker operation data are obtained from the SCADA system (dispatching automation system), and the obtained data can be collectively called as distribution network operation data.
S102, integrating three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data for preprocessing to obtain preprocessed data.
And S103, calculating the preprocessing data through tide analysis, and analyzing a distribution network problem base evaluation strategy, a distribution network planning project evaluation strategy and a planning construction effect evaluation strategy. In the embodiment of the application, firstly, power flow calculation is carried out on the preprocessed data, a distribution network problem library evaluation strategy is analyzed, then the distribution network problem library evaluation strategy is combined with distribution network operation data, and a distribution network planning project evaluation strategy is obtained after the power flow calculation; and finally, analyzing a planning construction effect evaluation strategy based on the obtained preprocessing data. For low voltage, voltage data is acquired from a metering automation system, the voltage is lower than 180V, the low voltage is compared with the artificially generated low voltage by a computer, if the low voltage is the same, the artificially generated low voltage is effective, and if the low voltage is different, the artificially generated low voltage is increased or replaced.
S104, respectively acquiring a manual planning problem library, a manual planning project library and a developed planning project library. In this embodiment, since the planning problem library, the manual planning project library, and the developed planning project library are all in the prior art, detailed description of specific acquisition modes is omitted in this application; the purpose of the database is to compare with the database obtained by multi-system multi-professional analysis so as to effectively evaluate the feasibility of the problem library or the project library.
And S105, generating a distribution network problem library according to the distribution network problem library evaluation strategy, and evaluating the manual planning problem library by adopting the distribution network problem library to obtain an evaluation result.
And S106, generating a distribution network project library according to the distribution network project evaluation strategy, and evaluating the manual planning project library by adopting the distribution network project library to obtain an evaluation result.
And S107, generating a construction effect project library according to the planning construction effect evaluation strategy, and evaluating the developed planning project library by adopting the construction effect project library to obtain an evaluation result.
The time sequence of the steps S105 to S107 is not limited, and the evaluation may be performed simultaneously, or the order of the evaluation may be changed at will, and the method for obtaining the evaluation result may not be limited to a comparison judgment method, for example:
optionally, in a feasible embodiment, the obtaining the evaluation result includes:
analyzing whether a net rack weak point exists; the grid weak point comprises at least one of unsatisfied N-1, heavy overload, low voltage, overlong power supply radius and high line loss rate;
if the grid weak point does not exist, the normal operation of the distribution network is indicated, the evaluation result is feasible, otherwise, the evaluation result is not feasible; at this time, it is necessary to execute a repair means for the problematic item by making a suggestion or the like.
Further, the analyzing whether the grid weak point exists includes:
giving out node data of a certain node in the distribution network; the node data comprises voltage, current, power data and line loss data; after carrying out load flow calculation analysis, giving out voltage, current, power data, line loss data and the like of each node of the network, comparing the voltage with a standard value, judging whether the voltage is out of limit, whether a line is overloaded, overload and the like, if so, adjusting a problem library and a project library, and repeatedly carrying out iterative calculation until the standard is met.
And comparing the node data with the corresponding standard values in the manual planning problem library, the manual planning project library or the developed planning project library, and if the node data does not accord with the standard values, judging that the current node is a net rack weak point. For example, when the node data is a voltage, it can be checked whether the voltage exceeds a defined maximum voltage value, or whether the line is overloaded or overloaded, so as to achieve the purpose of effective evaluation.
In addition, in the embodiment of the application, a distribution network problem library can be established by utilizing the preprocessing data, a distribution network problem library evaluation model and a developed planning construction project evaluation model are further established according to the distribution network problem library, a distribution network project library and an evaluation model thereof are correspondingly established according to the distribution network problem library, the distribution network problem library which is manually sorted by the distribution network problem library evaluation model is evaluated respectively to obtain a distribution network problem library evaluation result, the distribution network project library which is manually established by the distribution network project library evaluation model is evaluated to obtain a distribution network project evaluation result, the developed planning construction project is evaluated by the developed planning construction project evaluation model, and specific flow of obtaining each evaluation result is shown in fig. 3.
The present application may also be exemplified by a specific evaluation procedure as follows:
firstly, acquiring each item of data from the metering data of a transformer area, residents and a 10kV private line from a metering automation system, and integrating each item of data in a data preprocessing process;
secondly, carrying out power flow analysis calculation based on a known power flow calculation method, calculating preprocessing data by utilizing a power flow analysis model, respectively obtaining a distribution network problem library evaluation strategy, a distribution network planning project evaluation strategy and a planning construction effect evaluation strategy, and respectively producing a corresponding distribution network problem library, a distribution network project library and a construction effect project library according to the strategies.
And finally, respectively comparing the obtained manual planning problem library, manual planning project library and developed planning project library with the distribution network problem library, the distribution network project library and the construction effect project library generated according to the strategy to obtain an evaluation result.
The technical scheme of the method and the device can solve the problems that in the existing distribution network planning analysis process, distribution network planning cannot be timely and comprehensively estimated, and the working efficiency is low when the distribution network planning estimation is manually carried out. The method and the system analyze each process node of the distribution network planning by adopting a software engineering thought, and finally complete comprehensive process evaluation of distribution network planning problem library data, distribution network planning project library data and the construction effect of the distribution network planning project by an intelligent analysis technology, thereby better supporting the distribution network planning work.
Fig. 2 is a block diagram of a configuration diagram of an overall process evaluation device for planning a distribution network according to an embodiment of the present application. As shown in fig. 2, the apparatus includes:
the data acquisition module 21 is configured to extract three-phase imbalance data, low-voltage heavy overload data, line high-loss data, power supply reliability index and distribution network frame data from operation data of the multi-system multi-professional device respectively; the system is also used for respectively acquiring a manual planning problem library, a manual planning project library and a developed planning project library;
the preprocessing module 22 is configured to integrate three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability index and grid data of the distribution network to perform preprocessing, so as to obtain preprocessed data;
the policy obtaining module 23 is configured to calculate the preprocessing data through trend analysis, and analyze a distribution network problem base evaluation policy, a distribution network planning project evaluation policy, and a planning construction effect evaluation policy;
the evaluation module 24 is configured to generate a distribution network problem library according to the distribution network problem library evaluation policy, generate a distribution network project library according to the distribution network planning project evaluation policy, and generate a construction effect project library according to the planning construction effect evaluation policy; and evaluating the manual planning problem library, the manual planning project library and the developed planning project library by adopting the distribution network problem library, the distribution network project library and the construction effect project library respectively to obtain an evaluation result.
Optionally, the operation data of the multi-system multi-professional device is data obtained from a production management system, a SCADA system and a metering automation system respectively.
Optionally, the evaluation module further includes:
the analysis unit is used for analyzing whether the net rack weak points exist or not; the grid weak points comprise at least one of unsatisfied N-1, heavy overload, low voltage, overlong power supply radius and high line loss rate.
Optionally, the analysis unit includes:
the data acquisition subunit is used for giving out node data of a certain node in the distribution network; the node data comprises voltage, current, power data and line loss data;
and the comparison subunit is used for comparing the node data with the corresponding standard value in the manual planning problem library, the manual planning project library or the developed planning project library, and if the node data is not matched with the standard value, judging that the current node is a net rack weak point.
As can be seen from the above technical solutions, the present application provides a method and apparatus for evaluating the overall process of distribution network planning, wherein three-phase imbalance data, low-voltage heavy overload data, line high-loss data, power supply reliability index and distribution network frame data are respectively extracted from the operation data of multi-system multi-professional equipment, and then these are integrated and preprocessed to obtain preprocessing data; analyzing a distribution network problem base evaluation strategy, a distribution network planning project evaluation strategy and a planning construction effect evaluation strategy by analyzing and calculating preprocessing data through tide; and respectively obtaining distribution network planning problem library data, distribution network planning project library data and evaluation data of the construction effect of the distribution network planning project according to the strategies. According to the technical scheme, according to the distribution network planning management and control requirements, distribution network business data are integrated based on multi-professional data, an evaluation strategy is calculated on a distribution network planning problem base and distribution network planning projects, and then automatic evaluation can be carried out on distribution network planning problems, distribution network planning projects and planning project construction effects, so that the whole process of distribution network planning is effectively evaluated.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (6)
1. The whole process evaluation method for the distribution network planning is characterized by comprising the following steps of:
respectively extracting three-phase imbalance data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data from operation data of multi-system multi-professional equipment; the operation data of the multi-system multi-professional equipment are data obtained from a production management system, an SCADA system and a metering automation system respectively;
integrating three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data to perform preprocessing, so as to obtain preprocessed data;
carrying out power flow calculation on the preprocessed data, analyzing a distribution network problem base evaluation strategy, and combining the distribution network problem base evaluation strategy with distribution network operation data to obtain a distribution network planning project evaluation strategy after the power flow calculation; finally, analyzing a planning construction effect evaluation strategy based on the obtained preprocessing data;
respectively acquiring a manual planning problem library, a manual planning project library and an developed planning project library;
generating a distribution network problem library according to the distribution network problem library evaluation strategy, and evaluating the manual planning problem library by adopting the distribution network problem library to obtain an evaluation result;
generating a distribution network project library according to the distribution network project evaluation strategy, and evaluating the manual planning project library by adopting the distribution network project library to obtain an evaluation result;
and generating a construction effect project library according to the planning construction effect evaluation strategy, and evaluating the developed planning project library by adopting the construction effect project library to obtain an evaluation result.
2. The method of claim 1, wherein the obtaining the evaluation result comprises:
analyzing whether a net rack weak point exists; the grid weak point comprises at least one of unsatisfied N-1, heavy overload, low voltage, overlong power supply radius and high line loss rate;
if the net rack weak point does not exist, the evaluation result is feasible, otherwise, the evaluation result is not feasible.
3. The method of claim 2, wherein said analyzing whether a net rack weak point exists comprises:
giving out node data of a certain node in the distribution network; the node data comprises voltage, current, power data and line loss data;
and comparing the node data with the corresponding standard values in the manual planning problem library, the manual planning project library or the developed planning project library, and if the node data does not accord with the standard values, judging that the current node is a net rack weak point.
4. A distribution network planning overall process evaluation device, characterized by comprising:
the data acquisition module is used for respectively extracting three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data from the operation data of the multi-system multi-professional equipment; the system is also used for respectively acquiring a manual planning problem library, a manual planning project library and a developed planning project library; the operation data of the multi-system multi-professional equipment are data obtained from a production management system, an SCADA system and a metering automation system respectively;
the preprocessing module is used for integrating three-phase unbalanced data, low-voltage heavy overload data, line high-loss data, power supply reliability indexes and distribution network frame data to perform preprocessing so as to obtain preprocessed data;
the strategy acquisition module is used for calculating the preprocessing data through tide analysis and analyzing a distribution network problem base assessment strategy, a distribution network planning project assessment strategy and a planning construction effect assessment strategy;
the evaluation module is used for generating a distribution network problem library according to the distribution network problem library evaluation strategy, generating a distribution network project library according to the distribution network planning project evaluation strategy, and generating a construction effect project library according to the planning construction effect evaluation strategy; and evaluating the manual planning problem library, the manual planning project library and the developed planning project library by adopting the distribution network problem library, the distribution network project library and the construction effect project library respectively to obtain an evaluation result.
5. The apparatus of claim 4, wherein the evaluation module further comprises:
the analysis unit is used for analyzing whether the net rack weak points exist or not; the grid weak points comprise at least one of unsatisfied N-1, heavy overload, low voltage, overlong power supply radius and high line loss rate.
6. The apparatus according to claim 5, wherein the analysis unit comprises:
the data acquisition subunit is used for giving out node data of a certain node in the distribution network; the node data comprises voltage, current, power data and line loss data;
and the comparison subunit is used for comparing the node data with the corresponding standard value in the manual planning problem library, the manual planning project library or the developed planning project library, and if the node data is not matched with the standard value, judging that the current node is a net rack weak point.
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