CN115207939A - Power compensation method and device for line - Google Patents
Power compensation method and device for line Download PDFInfo
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- CN115207939A CN115207939A CN202211112432.2A CN202211112432A CN115207939A CN 115207939 A CN115207939 A CN 115207939A CN 202211112432 A CN202211112432 A CN 202211112432A CN 115207939 A CN115207939 A CN 115207939A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1871—Methods for planning installation of shunt reactive power compensators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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Abstract
The invention discloses a power compensation method and a device of a line, wherein the method comprises the following steps: the method comprises the steps of obtaining line power data, line network topology information and power compensation data of a line, determining the installation position of a power compensation device according to the line power data and a distribution qualitative rule, constructing a line loss distribution model, a device line loss calculation model and a device loss reduction model based on the line power data and the line network topology information, inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, calculating to obtain the optimal installation capacity and the optimal quantity combination of the power compensation device, and compensating the line power based on the installation position, the optimal installation capacity and the optimal quantity combination. The technical problem that the power compensation is unreasonable due to the fact that the existing line power compensation method is not combined with the installation position of the compensation device is solved, and the power compensation efficiency of the line is improved.
Description
Technical Field
The present invention relates to the field of line power compensation technologies, and in particular, to a line power compensation method and apparatus.
Background
The line loss of a medium-voltage line of a power distribution network is an important index for measuring the economic operation of the line, wherein the long-distance flow of reactive power on the line is one of the main reasons for causing the line loss of the power distribution network to be higher, so that the realization of the local proper compensation of the reactive power becomes a main technical measure for reducing the line loss.
The existing measuring and calculating methods for the installation position and the installation capacity of the parallel reactive power compensation device do not carry out quantitative analysis according to the reactive power distribution condition of an actual line, and the installation position of the reactive power compensation device is determined by combining the reactive power distribution characteristics of the line; the existing method aims at improving the instantaneous power factor, and the installation capacity of the reactive power compensation device is not determined according to the line loss condition of the line within a period of time.
Therefore, in order to improve the power compensation efficiency of the line and solve the technical problem that the existing line power compensation method does not combine the installation position of the compensation device to cause unreasonable power compensation, it is necessary to construct a line power compensation method.
Disclosure of Invention
The invention provides a power compensation method and device for a circuit, and solves the technical problem that the existing circuit power compensation method is not combined with the installation position of a compensation device to cause unreasonable power compensation.
In a first aspect, the present invention provides a power compensation method for a line, including:
obtaining line power data, line network topology information and power compensation data of a medium-voltage distribution line;
determining the installation position information of a power compensation device required by the medium-voltage distribution line according to the line power data and preset qualitative distribution rule information;
constructing a line loss distribution model, a device line loss calculation model and a device loss reduction model based on the line power data and the line network topology information;
inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain the optimal installation capacity data and the optimal quantity combined data of the power compensation device;
compensating the power of the medium voltage distribution line based on the installation position information, the optimal installation capacity data, and the optimal quantity combination data.
Optionally, determining, according to the line power data, installation location information of a power compensation device required by the medium voltage distribution line, including:
according to the line power data, determining reactive power distribution condition information of the medium-voltage distribution line in each subsection interval;
determining reactive power distribution attribute data of the medium-voltage distribution line based on the reactive power distribution condition information and in combination with the preset distribution qualitative rule information;
and determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the reactive power distribution attribute data.
Optionally, constructing a line loss distribution model, a device line loss calculation model, and a device loss reduction model based on the line power data and the line network topology information, including:
constructing a preliminary line loss distribution model, a preliminary device line loss calculation model and a preliminary device loss reduction model based on the line power data and the line network topology information;
dividing the line power data and the line network topology information into training data and verification data;
based on the training data with the verification data, training and verifying the preliminary line loss distribution model, the preliminary device line loss calculation model and the preliminary device loss reduction model are obtained.
Optionally, inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain the optimal installation capacity data and the optimal quantity combination data of the power compensation device, including:
inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain optimal installation capacity data of the power compensation device;
and determining the optimal quantity combination data of the power compensation device based on the line power data and the optimal installation capacity.
Optionally, after the power compensation data is input to the line loss distribution model, the device line loss calculation model, and the device loss reduction model, and the optimal installation capacity data of the power compensation device is obtained through calculation, the method further includes:
and verifying the optimal installation capacity data by combining the line network topology information based on a preset power factor.
In a second aspect, the present invention provides a power compensation apparatus for a line, including:
the acquisition module is used for acquiring line power data, line network topology information and power compensation data of the medium-voltage distribution line;
the position module is used for determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the line power data and preset distribution qualitative rule information;
the building module is used for building a line loss distribution model, a device line loss calculation model and a device loss reduction model based on the line power data and the line network topology information;
the calculation module is used for inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain optimal installation capacity data and optimal quantity combination data of the power compensation device;
and the compensation module is used for compensating the power of the medium-voltage distribution line based on the installation position information, the optimal installation capacity data and the optimal quantity combination data.
Optionally, the location module comprises:
the determining submodule is used for determining the reactive power distribution condition information of the medium-voltage distribution line in each subsection interval according to the line power data;
the attribute submodule is used for determining reactive power distribution attribute data of the medium-voltage distribution line by combining the preset distribution qualitative rule information based on the reactive power distribution condition information;
and the position submodule is used for determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the reactive power distribution attribute data.
Optionally, the building module comprises:
the building submodule is used for building a preliminary line loss distribution model, a preliminary device line loss calculation model and a preliminary device loss reduction model based on the line power data and the line network topology information;
the dividing submodule is used for dividing the line power data and the line network topology information into training data and verification data;
and the training submodule is used for training and verifying the initial line loss distribution model, the initial device line loss calculation model and the initial device loss reduction model based on the training data and the verification data to obtain the line loss distribution model, the device line loss calculation model and the device loss reduction model.
Optionally, the calculation module comprises:
the capacity submodule is used for inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain optimal installation capacity data of the power compensation device;
a combining submodule for determining an optimal number of combined data of the power compensation device based on the line power data and the optimal installation capacity.
Optionally, the computing module further comprises:
and the verification submodule is used for verifying the optimal installation capacity data by combining the line network topology information based on a preset power factor.
According to the technical scheme, the invention has the following advantages: the invention provides a power compensation method of a line, which comprises the steps of obtaining line power data, line network topology information and power compensation data of a medium-voltage distribution line, determining installation position information of a power compensation device required by the medium-voltage distribution line according to the line power data and preset distribution qualitative rule information, constructing a line loss distribution model, a device line loss calculation model and a device loss reduction model based on the line power data and the line network topology information, inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, calculating to obtain optimal installation capacity data and optimal quantity combination data of the power compensation device, carrying out power compensation on the medium-voltage distribution line based on the installation position information, the optimal installation capacity data and the optimal quantity combination data, and solving the technical problem that the existing line power compensation method does not combine the installation position of the compensation device to cause unreasonable power compensation through the power compensation method of the line, thereby improving the efficiency of the power compensation method of the line.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flowchart illustrating a first embodiment of a method for power compensation of a circuit according to the present invention;
FIG. 2 is a flowchart illustrating a second embodiment of a method for power compensation of a circuit according to the present invention;
fig. 3 is a block diagram of a power compensation apparatus of a circuit according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a power compensation method and device for a line, which are used for solving the technical problem that the existing line power compensation method is not combined with the installation position of a compensation device to cause unreasonable power compensation.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1, fig. 1 is a flowchart illustrating a first embodiment of a method for compensating power of a line according to the present invention, including:
step S101, obtaining line power data, line network topology information and power compensation data of a medium-voltage distribution line;
step S102, determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the line power data and preset distribution qualitative rule information;
in the embodiment of the invention, the reactive power distribution condition information of the medium-voltage distribution line in each subsection interval is determined according to the line power data, the reactive power distribution attribute data of the medium-voltage distribution line is determined by combining the preset distribution qualitative rule information based on the reactive power distribution condition information, and the installation position information of the power compensation device required by the medium-voltage distribution line is determined according to the reactive power distribution attribute data.
Step S103, constructing a line loss distribution model, a device line loss calculation model and a device loss reduction model based on the line power data and the line network topology information;
in the embodiment of the present invention, a preliminary line loss distribution model, a preliminary device line loss calculation model, and a preliminary device loss reduction model are constructed based on the line power data and the line network topology information, the line power data and the line network topology information are divided into training data and verification data, and the preliminary line loss distribution model, the preliminary device line loss calculation model, and the preliminary device loss reduction model are trained and verified based on the training data and the verification data, so as to obtain the line loss distribution model, the device line loss calculation model, and the device loss reduction model.
Step S104, inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain the optimal installation capacity data and the optimal quantity combined data of the power compensation device;
in the embodiment of the present invention, the power compensation data is input to the line loss distribution model, the device line loss calculation model, and the device loss reduction model, optimal installation capacity data of the power compensation device is obtained through calculation, the optimal installation capacity data is verified based on a preset power factor in combination with the line network topology information, and optimal quantity combination data of the power compensation device is determined based on the line power data and the optimal installation capacity.
And step S105, compensating the power of the medium-voltage distribution line based on the installation position information, the optimal installation capacity data and the optimal quantity combined data.
According to the line power compensation method provided by the embodiment of the invention, the line power data, the line network topology information and the power compensation data of a medium-voltage power distribution line are obtained, the installation position information of a power compensation device required by the medium-voltage power distribution line is determined according to the line power data and the preset distribution qualitative rule information, a line loss distribution model, a device line loss calculation model and a device loss reduction model are constructed based on the line power data and the line network topology information, the power compensation data are input into the line loss distribution model, the device line loss calculation model and the device loss reduction model, the optimal installation capacity data and the optimal quantity combination data of the power compensation device are calculated, the medium-voltage power distribution line is subjected to power compensation based on the installation position information, the optimal installation capacity data and the optimal quantity combination data, the technical problem that the existing line power compensation method does not combine the installation position of the compensation device to cause unreasonable power compensation is solved through the line power compensation method, and the line power compensation efficiency is improved.
In a second embodiment, referring to fig. 2, fig. 2 is a flowchart of a power compensation method for a circuit according to the present invention, including:
step S201, obtaining line power data, line network topology information and power compensation data of a medium-voltage distribution line;
in the embodiment of the invention, line power data, line network topology information and power compensation data of the medium-voltage power distribution line are obtained, the power compensation data comprise reactive power, active power and voltage data of the line power data in the medium-voltage power distribution line, and data such as line switch information of the line network topology information and line segment inner conductor parameters, and an information hash table can be formed by the line power data and the line network topology information.
In the concrete implementation, according to actual requirements, a medium-voltage distribution line to be analyzed is selected, the reactive power condition of the line in the last year is inquired through a distribution automation system, and the day with the maximum reactive power is selected as a typical reactive power load day.
According to the distribution condition of the line automatic switches in the power distribution automation system, a network topology structure diagram of the line is formed, and the sequence of the automatic switches, the line diameter and the length of line conductors and other information are determined; meanwhile, a related information hash table of the line is formed, and data, name numbers and the like required to be collected by the analysis method and system are determined. A specific hash table of information is as follows:
according to the topological relation diagram of the line network and the formed information hash table, data acquisition is carried out on related information through a correlation power distribution automation system, and data acquisition, line attribute information acquisition, acquisition interval time setting and the like of the medium-voltage line automatic switch are mainly completed.
Step S202, according to the line power data, determining reactive power distribution condition information of the medium-voltage distribution line in each subsection interval;
in the embodiment of the invention, the reactive power distribution condition information of the medium-voltage distribution line in each subsection interval is determined by the line power data.
In a specific implementation, the calculation method of the specific distribution of reactive power along the line is as follows:
first segment interval Δ 1= Q-Q 1 ；
Second segment interval Δ 2= q 1 -Q 2 ；
Third segment interval Δ 3= q 2 -Q 3 ；
Nth subsection Δ n = Q n-1 -Qn；
N +1 th segment interval Δ n +1= q n -Q n+1 。
Step S203, determining reactive power distribution attribute data of the medium-voltage distribution line based on the reactive power distribution condition information and in combination with preset distribution qualitative rule information;
in the embodiment of the invention, the reactive power distribution attribute of the medium-voltage line is determined according to the reactive power distribution condition information in each subsection interval of the medium-voltage line and by combining with the qualitative distribution rule.
In a specific implementation, the calculation method for determining the reactive power distribution properties of the medium voltage line is as follows
Average distribution: (1-beta%). Q/(M + 1) < delta n < (1 + beta%). Q/(M + 1), wherein Q is the total reactive power of the line at the peak moment, beta is the up-and-down floating coefficient of the reactive power distribution, and the value ranges from 10 to 20.
Front end distribution: q/3 < (Δ Q) 1 +ΔQ 2 +…+ΔQ mod(M+1)/3 ) Q is the total reactive power of the line at the peak moment; mod is an integer fetch operation.
Rear end distribution: q/3 < (Δ Q) M+1 +ΔQ M +ΔQ M-1 +…+ΔQ （mod（2(M+1)/3）+1） ) Q is the total reactive power of the line at the peak moment; mod is an integer fetch operation.
Intermediate distribution: 2Q/3 < (Δ Q) （mod(M+1)/3）+1 +ΔQ （mod(M+1)/3）+2 +…+ΔQ （mod（2(M+1)/3） ) Q is the total reactive power of the line at the peak moment; mod is an integer fetch operation.
Step S204, determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the reactive power distribution attribute data;
in an embodiment of the invention, the installation position of the power compensation device is determined by the reactive power distribution attribute data.
In a specific implementation, the installation positions of the power compensation device are specifically as follows:
average distribution: and the parallel capacitors with proper capacity are dispersedly arranged in the middle section or front, middle and rear of the circuit. (the power compensation means being in particular parallel capacitors or the like)
Front end distribution: a parallel capacitor with proper capacity is installed at a position in the mod ((M + 1)/3) -1 subsection interval of the line; mod is an integer fetch operation.
Rear end distribution: a parallel capacitor of an appropriate capacity is installed at a position within the M-1 th block section of the medium voltage line.
Intermediate distribution: a parallel capacitor of an appropriate capacity is installed at the beginning of the middle section of the medium voltage line at the mod ((M + 1)/3) +1 position.
Step S205, constructing a preliminary line loss distribution model, a preliminary device line loss calculation model and a preliminary device loss reduction model based on the line power data and the line network topology information;
according to the determined typical load daily reactive power data of the medium-voltage line, a line loss distribution model based on automatic switch data acquisition of the power distribution network line and a parallel capacitor line loss calculation model for determining the installation position are respectively constructed AS follows, wherein A1 is a line bus loss model before installation, and AS is a line bus loss model after installing a parallel capacitor with capacity being QS at the Nth section of the line; 96 is the typical load day with one point collected every 15 minutes for a total of 96 data points, where N is the switching interval for the parallel capacitor mounting location.
The method comprises the following steps of obtaining active power of a line in a subsection interval, obtaining reactive power of the line in the subsection interval, obtaining voltage of the line in the subsection interval, obtaining resistance of the line in the subsection interval, obtaining delta T of the line in the subsection interval, obtaining time interval of data collection, and obtaining total number of subsections of the line.
Step S206, dividing the line power data and the line network topology information into training data and verification data;
step S207 of training and verifying the preliminary line loss distribution model, the preliminary device line loss calculation model, and the preliminary device loss reduction model based on the training data and the verification data to obtain the line loss distribution model, the device line loss calculation model, and the device loss reduction model;
step S208, inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain the optimal installation capacity data of the power compensation device;
in an optional embodiment, after the inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model and calculating the optimal installation capacity data of the power compensation device, the method further includes:
and verifying the optimal installation capacity data by combining the line network topology information based on a preset power factor.
In the embodiment of the present invention, the power compensation data is input to the line loss distribution model, the device line loss calculation model, and the device loss reduction model, optimal installation capacity data of the power compensation device is obtained through calculation, and the optimal installation capacity data is verified based on a preset power factor in combination with the line network topology information.
In the specific implementation, the power compensation data is input into a model for calculation to obtain the optimal installation capacity data of the power compensation device, system verification is carried out according to the optimal installation capacity data and the line condition, the condition of the capacity of the supplementary capacitor on a typical load day is checked, the verification condition comprises power factor verification after installation, and the problem of no overcompensation is avoided;
power factor check formula:
wherein Q is max And P max The maximum value of the reactive power and the active power of the typical load day of the reactive power is as follows: 1 > cos phi > 0.9, the lower limit of the condition can be adjusted and set according to the line condition.
Step S209, determining the optimal quantity combination data of the power compensation device based on the line power data and the optimal installation capacity;
in the embodiment of the invention, the optimal number combination of the power compensation devices is determined based on the average data of the typical load daily reactive power and the optimal installation capacity in the line power data.
In the concrete implementation, the minimum unit combination of the parallel capacitors planned to be installed is determined through the tested installation capacity and the average data of the daily reactive power of the typical load, so that the capacitors can be switched in a grouping and time-sharing mode according to the reactive power requirement.
And step S210, compensating the power of the medium-voltage distribution line based on the installation position information, the optimal installation capacity data and the optimal quantity combined data.
According to the line power compensation method provided by the embodiment of the invention, the line power data, the line network topology information and the power compensation data of a medium-voltage power distribution line are obtained, the installation position information of a power compensation device required by the medium-voltage power distribution line is determined according to the line power data and the preset distribution qualitative rule information, a line loss distribution model, a device line loss calculation model and a device loss reduction model are constructed based on the line power data and the line network topology information, the power compensation data are input into the line loss distribution model, the device line loss calculation model and the device loss reduction model, the optimal installation capacity data and the optimal quantity combination data of the power compensation device are calculated, the medium-voltage power distribution line is subjected to power compensation based on the installation position information, the optimal installation capacity data and the optimal quantity combination data, the technical problem that the existing line power compensation method does not combine the installation position of the compensation device to cause unreasonable power compensation is solved through the line power compensation method, and the line power compensation efficiency is improved.
Referring to fig. 3, fig. 3 is a block diagram of a power compensation apparatus of a circuit according to an embodiment of the present invention, including:
the acquiring module 301 is configured to acquire line power data, line network topology information, and power compensation data of the medium-voltage distribution line;
a position module 302, configured to determine, according to the line power data and preset qualitative distribution rule information, installation position information of a power compensation device required by the medium-voltage distribution line;
a building module 303, configured to build a line loss distribution model, a device line loss calculation model, and a device loss reduction model based on the line power data and the line network topology information;
a calculating module 304, configured to input the power compensation data into the line loss distribution model, the device line loss calculating model, and the device loss reduction model, and calculate to obtain optimal installation capacity data and optimal quantity combination data of the power compensation device;
a compensation module 305, configured to compensate the power of the medium voltage distribution line based on the installation location information, the optimal installation capacity data, and the optimal quantity combination data.
In an alternative embodiment, the location module 302 includes:
the determining submodule is used for determining the reactive power distribution condition information of the medium-voltage distribution line in each subsection interval according to the line power data;
the attribute submodule is used for determining reactive power distribution attribute data of the medium-voltage distribution line by combining the preset distribution qualitative rule information based on the reactive power distribution condition information;
and the position submodule is used for determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the reactive power distribution attribute data.
In an alternative embodiment, the building module 303 includes:
the building submodule is used for building a preliminary line loss distribution model, a preliminary device line loss calculation model and a preliminary device loss reduction model based on the line power data and the line network topology information;
the dividing submodule is used for dividing the line power data and the line network topology information into training data and verification data;
and the training submodule is used for training and verifying the initial line loss distribution model, the initial device line loss calculation model and the initial device loss reduction model based on the training data and the verification data to obtain the line loss distribution model, the device line loss calculation model and the device loss reduction model.
In an alternative embodiment, the calculation module 304 includes:
the capacity sub-module is used for inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain optimal installation capacity data of the power compensation device;
a combining submodule for determining an optimal number of combined data of the power compensation device based on the line power data and the optimal installation capacity.
In an optional embodiment, the calculation module 304 further comprises:
and the verification submodule is used for verifying the optimal installation capacity data by combining the line network topology information based on a preset power factor.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the method and apparatus disclosed in the present invention can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is substantially or partly contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a readable storage medium and includes several instructions, so as to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned readable storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for power compensation of a line, comprising:
obtaining line power data, line network topology information and power compensation data of a medium-voltage distribution line;
determining the installation position information of a power compensation device required by the medium-voltage distribution line according to the line power data and preset qualitative distribution rule information;
constructing a line loss distribution model, a device line loss calculation model and a device loss reduction model based on the line power data and the line network topology information;
inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain the optimal installation capacity data and the optimal quantity combined data of the power compensation device;
compensating the power of the medium voltage distribution line based on the installation position information, the optimal installation capacity data, and the optimal quantity combination data.
2. The method of power compensation of a line of claim 1, wherein determining installation location information of a power compensation device required for the medium voltage distribution line based on the line power data comprises:
according to the line power data, determining reactive power distribution condition information of the medium-voltage distribution line in each subsection interval;
determining reactive power distribution attribute data of the medium-voltage distribution line based on the reactive power distribution condition information and in combination with the preset distribution qualitative rule information;
and determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the reactive power distribution attribute data.
3. The method of claim 1, wherein constructing a line loss distribution model, a device line loss calculation model, and a device loss reduction model based on the line power data and the line network topology information comprises:
constructing a preliminary line loss distribution model, a preliminary device line loss calculation model and a preliminary device loss reduction model based on the line power data and the line network topology information;
dividing the line power data and the line network topology information into training data and verification data;
training and verifying the preliminary line loss distribution model, the preliminary device line loss calculation model and the preliminary device loss reduction model based on the training data and the verification data to obtain the line loss distribution model, the device line loss calculation model and the device loss reduction model.
4. The method of claim 1, wherein the step of inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model to calculate optimal installation capacity data and optimal quantity combination data of the power compensation device comprises:
inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain optimal installation capacity data of the power compensation device;
determining an optimal number of combined data of the power compensation devices based on the line power data and the optimal installation capacity.
5. The method of claim 4, wherein the step of inputting the power compensation data into the line loss distribution model, the device line loss calculation model, and the device loss reduction model, and calculating optimal installation capacity data of the power compensation device further comprises:
and verifying the optimal installation capacity data by combining the line network topology information based on a preset power factor.
6. A power compensation apparatus for a line, comprising:
the acquisition module is used for acquiring line power data, line network topology information and power compensation data of the medium-voltage distribution line;
the position module is used for determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the line power data and preset distribution qualitative rule information;
the building module is used for building a line loss distribution model, a device line loss calculation model and a device loss reduction model based on the line power data and the line network topology information;
the calculation module is used for inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain optimal installation capacity data and optimal quantity combination data of the power compensation device;
and the compensation module is used for compensating the power of the medium-voltage distribution line based on the installation position information, the optimal installation capacity data and the optimal quantity combined data.
7. The line power compensation apparatus of claim 6, wherein the position module comprises:
the determining submodule is used for determining the reactive power distribution condition information of the medium-voltage distribution line in each subsection interval according to the line power data;
the attribute submodule is used for determining reactive power distribution attribute data of the medium-voltage distribution line by combining the preset distribution qualitative rule information based on the reactive power distribution condition information;
and the position submodule is used for determining the installation position information of the power compensation device required by the medium-voltage distribution line according to the reactive power distribution attribute data.
8. The apparatus of claim 6, wherein the building block comprises:
the building submodule is used for building a preliminary line loss distribution model, a preliminary device line loss calculation model and a preliminary device loss reduction model based on the line power data and the line network topology information;
the dividing submodule is used for dividing the line power data and the line network topology information into training data and verification data;
and the training submodule is used for training and verifying the initial line loss distribution model, the initial device line loss calculation model and the initial device loss reduction model based on the training data and the verification data to obtain the line loss distribution model, the device line loss calculation model and the device loss reduction model.
9. The apparatus of claim 6, wherein the computing module comprises:
the capacity submodule is used for inputting the power compensation data into the line loss distribution model, the device line loss calculation model and the device loss reduction model, and calculating to obtain optimal installation capacity data of the power compensation device;
a combining submodule for determining an optimal number of combined data of the power compensation device based on the line power data and the optimal installation capacity.
10. The apparatus for power compensation of a line of claim 9, wherein the computing module further comprises:
and the verification submodule is used for verifying the optimal installation capacity data by combining the line network topology information based on a preset power factor.
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