CN115459258A - Load accurate regulation and control method and system based on distribution automation - Google Patents
Load accurate regulation and control method and system based on distribution automation Download PDFInfo
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- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/58—The condition being electrical
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Abstract
The invention relates to a load accurate regulation and control method and device based on power distribution automation, wherein the method comprises the following steps: constructing a controllable load resource pool for the distribution network automation system according to controllable equipment of different levels in the line; carrying out normalized power grid load monitoring, and confirming a regulation and control range according to a given regulation and control target; determining a task type according to time urgency, generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and giving a controllable device list; and when the regulation and control are executed, selecting the execution equipment according to the controllable equipment list. The invention can accurately define the regulation and control equipment, thereby flexibly carrying out load regulation and control.
Description
Technical Field
The invention relates to the technical field of orderly power utilization of a power distribution network, in particular to a load accurate regulation and control method and system based on power distribution automation.
Background
With the rapid development of economic society, the social energy demand is continuously increased, so that the problem of incongruity between energy and economy is highlighted, and in addition, the energy supply and the distribution of energy areas in various regions are unbalanced, and the emergency support capability among the areas is insufficient, so that the ordered power utilization in the future becomes necessary. The orderly power utilization implementation work needs to be completed by the cooperation of multiple parties, and relevant regulation and control departments of all levels of power supply companies timely start the orderly power utilization work according to the power supply capacity and the power utilization load condition, so that the daily power utilization load, the power utilization amount and other related statistics work are completed, and the power utilization balance work is timely completed when the power and the electric quantity change. With the continuous improvement of the power distribution network side informatization technology, the automatic system is utilized to comprehensively configure power grid resources and loads, so that the mutual economic interaction of a power supply, a power grid and user loads is realized, and the improvement of the power utilization balance working effect of the medium-voltage side of the power distribution network becomes possible.
Distribution automation is a technology of comprehensively utilizing computers, information, communication and the like, provides data acquisition support for distribution network management through informatization system integration, realizes monitoring control on a distribution network, improves the operation condition of a power grid through switching power supply, and improves the power supply reliability by utilizing functions of feeder automation and the like. When the current distribution network supplies power, because lack accurate supervision user load data, lead to when the electric power breach needs balanced power consumption appearing, rely on the extensive formula control to the direct break-out of heavy load such as big industry commercial user, feeder whole to can produce great negative effects to economic society.
Disclosure of Invention
The invention aims to provide a load accurate regulation and control method and system based on power distribution automation, which can accurately define regulation and control equipment so as to flexibly regulate and control the load.
The technical scheme adopted by the invention for solving the technical problems is as follows: the load accurate regulation and control method based on distribution automation comprises the following steps:
the method comprises the steps that a controllable load resource pool is built for a distribution network automation system according to controllable devices of different levels in a line, wherein the controllable load resource pool takes a controllable user load group as a resource, and is created and maintained by user load group configuration which can be covered by each controllable device, and attribute information of the user load group comprises a controllable device id, user attributes and load size;
carrying out normalized power grid load monitoring, and confirming a regulation and control range according to a given regulation and control target;
determining a task type according to time urgency, generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and giving a controllable device list;
and when the regulation and control are executed, selecting the execution equipment according to the controllable equipment list.
The controllable equipment comprises a demarcation switch, a branch switch, a section switch and an outgoing switch on the feeder line.
The user attributes comprise user types and user importance, and the user types comprise industrial users, residential users, business users and other users; the user importance includes an importance class, a power conservation class, an elimination class, a limitation class, an excess capacity class, and other classes.
Generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and providing a controllable device list, wherein the method comprises the following steps:
determining estimated load data to be used according to the task type;
determining user loads needing to be regulated and controlled according to importance layers of controllable devices of different levels;
and sequencing and outputting the regulated user load according to the regulated load data of the controllable equipment of each level from large to small to obtain a regulated equipment list.
When the estimated load data needing to be used is determined according to the task type, when the task type is a normalized load regulation and control task, the estimated load data adopts long-term estimated load data, when the task type is a non-normalized load regulation and control task, the estimated load data adopts short-term estimated load data, and when the task type is an emergency load regulation and control task, the estimated load data adopts real-time monitoring load data.
The method for determining the user load to be regulated according to the importance hierarchy of the controllable devices of different hierarchies comprises the following steps:
selecting a boundary switch, taking the eliminated class, the limited class, the surplus capacity class and other classes of user loads in industrial users controlled by the boundary switch as a first regulated user load, adopting the estimated load data to estimate the first regulated user load to obtain a first total load, judging whether the first total load can meet the requirement, and adopting the next step if the first total load cannot meet the requirement;
selecting a branch switch, taking the user loads of elimination classes, limitation classes, excess capacity classes and other classes in commercial users, industrial users and other users controlled by the branch switch as second regulated user loads, adopting the estimated load data to estimate the second regulated user loads to obtain second total loads, judging whether the second total loads can meet the requirements, and adopting the next step if the second total loads cannot meet the requirements;
selecting a section switch, transferring important users and power protection users controlled by the section switch through a line with low line load rate, taking other user loads as a third regulated user load, predicting the third regulated user load by adopting the predicted load data to obtain a third total load, judging whether the third total load can meet the requirement, and if not, adopting the next step;
selecting the outgoing switch, taking the other user loads except the important class and the electricity-protecting class controlled by the outgoing switch as fourth regulated user loads, and sequentially increasing and controlling load resources according to the sequence of industrial users, commercial users, other users and residential users.
When the control is executed, after the execution device is selected according to the controllable device list, the method further includes:
carrying out real-time data comparison through remote signaling data enrollment;
and judging whether the regulation target is reached or not according to the comparison result, and if the regulation target is not reached, adopting an emergency load regulation task to regulate again.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides an accurate regulation and control device of load based on distribution automation, includes:
the system comprises a construction module, a control module and a management module, wherein the construction module is used for constructing a controllable load resource pool for a distribution network automation system according to controllable equipment at different levels in a line, the controllable load resource pool takes a controllable user load group as a resource and is established and maintained by the configuration of the user load group which can be covered by each controllable equipment, and the attribute information of the user load group comprises a controllable equipment id, a user attribute and a load size;
the regulation and control range confirmation module is used for carrying out normalized power grid load monitoring and confirming the regulation and control range according to a given regulation and control target;
the regulation and control scheme generation module is used for determining a task type according to time urgency, generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and giving a controllable device list;
and the execution module is used for selecting execution equipment according to the controllable equipment list when regulation and control are executed.
The technical scheme adopted by the invention for solving the technical problems is as follows: an electronic device is provided, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the load accurate regulation and control method based on distribution automation are implemented.
The technical scheme adopted by the invention for solving the technical problems is as follows: a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned distribution automation-based load precise regulation method.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: according to a plurality of influence factors such as time urgency, influence range and the like, monitoring, decision-making and control functions of the existing distribution automation system are considered, a corresponding working process is constructed, and accurate load regulation and control are achieved. When the invention is used for regulation and control, according to attributes such as different switch equipment levels of controllable equipment, controllable load size, electricity utilization type, user type and the like, through a layered selection mode, according to importance from low to high, the control range is gradually increased, and the load precision regulation and control is flexibly realized in a mode of expanding the influence degree in a stepped mode, so that the invention can effectively deal with the electricity utilization load gap possibly occurring in the electricity utilization peak period, and the negative influence of the electricity supply and demand gap on the economic society is reduced to the minimum.
Drawings
Fig. 1 is a flowchart of a load precision regulation and control method based on distribution automation according to a first embodiment of the present invention;
FIG. 2 is a flow chart for generating a load regulation scheme in a first embodiment of the present invention;
fig. 3 is an exemplary view of a feeder L1 in the embodiment of the present invention;
fig. 4 is an exemplary diagram of the feeder L2 in the embodiment of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The first embodiment of the invention relates to a load accurate regulation and control method based on distribution automation, which comprises the following steps as shown in fig. 1:
step S1, a controllable load resource pool is constructed for the distribution network automation system according to controllable devices of different levels in the line.
In this step, the controllable devices refer to a demarcation switch, a branch switch, a section switch and an outgoing switch on the feeder line. The controllable load resource pool is a management mechanism, takes controllable user load groups as resources, is configured by the user load groups which can be covered by each controllable device, and is established and maintained by a power distribution network automation system, wherein the attribute information of each user load group comprises controllable device id, user attribute, load size and the like.
The user attributes comprise two parts of user types and user importance, the user type division relates to industrial users, residential users, commercial users, other users and the like, the importance division relates to important classes, power conservation classes, elimination classes, limiting classes, excess capacity classes, other classes and the like, and the accurate load regulation and control of the method is based on the two parts.
And S2, carrying out normalized power grid load monitoring, and confirming a regulation and control range according to a regulation and control target given by a superior department.
In this step, the power grid load monitoring is performed based on a power distribution network automation system. The regulation and control target is determined based on the regulation and control plan and the ordered power utilization requirement of the superior department and by combining the original early warning function of the system. The regulation range mainly refers to a feeder line needing electricity limitation.
And S3, determining a task type according to time urgency, generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and giving a controllable device list.
The task types in the step mainly comprise three types of normalized load regulation, abnormal load regulation, emergency load regulation and the like, and the three types of task strategies are gradually urgent according to the reaction time of executing the tasks. The normalized load regulation and control refers to a regulation and control strategy which guides enterprise users to orderly use power at peak staggering according to a cycle regulation and control strategy issued in advance according to an orderly power utilization target; the abnormal load regulation and control means that the existing normal regulation and control can not meet the ordered power utilization requirement, and a regulation and control strategy is automatically generated and issued according to the current load condition and prediction data, so that the regulation and control strategy of a user with certain reaction time is given; the emergency load regulation refers to a regulation strategy that has very urgent situation and higher timeliness requirement and needs immediate response and quick execution to meet the index requirement.
The load regulation scheme is characterized in that the purpose of limiting the power within a regulation range is achieved through remote control operation of controllable equipment according to a given time sequence and a control interval after steps of load transfer, load removal and the like. The controllable equipment list comprises controllable switch equipment in two links of load transfer and load removal; the load transfer mainly completes the transfer of important users to other light load lines, and needs to be executed independently at first.
The load regulation and control scheme needs to analyze the size of the controllable load step by step according to a user demarcation switch, a branch switch, a section switch and an outlet switch, and determines that a regulation and control level needs to be started, as shown in fig. 2, the specific confirmation process is as follows:
s31, distinguishing according to the emergency degree of the task type, when a normalized load regulation task strategy is adopted, regulation and control are required according to long-term estimated load data, when an abnormal load regulation task strategy is adopted, regulation and control are required according to short-term estimated load data, and when an emergency load regulation task strategy is adopted, regulation and control are required according to real-time monitored load data;
s32, preferentially selecting a demarcation switch, regulating and controlling loads of eliminated users, limited users, excess capacity users, other users and the like in the industrial power, namely, using the eliminated users, limited users, excess capacity users and other user loads in the industrial users controlled by the demarcation switch as first regulated and controlled user loads, if all collected loads (namely, estimating the first regulated and controlled user loads by adopting the estimated load data to obtain first all loads) can meet the requirements, submitting an adjustable and controllable demarcation switch list to S37, and if the regulated and controlled user loads cannot reach a regulation and control target, transferring to S33;
s33, selecting a branch switch, regulating and controlling elimination users, limitation users, excess capacity users, other users and the like in the commercial service industry electricity utilization, the industrial electricity utilization and other electricity utilization, namely taking the user loads of elimination, limitation, excess capacity and other types in the commercial users, the industrial users and other users controlled by the branch switch as second regulated and controlled user loads, submitting a controllable branch switch list to S37 if the collected all loads (namely adopting the estimated load data to estimate the second regulated and controlled user loads to obtain second all loads) can meet the requirements, and transferring to S34 if the regulation and control targets cannot be reached;
s34, selecting the section switch again, wherein section power failure of important users and electricity-protecting users needs to be avoided at the moment, the line can be switched through a line with a low line load rate, other user loads serve as third regulated and controlled user loads, if all collected loads (namely, the third regulated and controlled user loads are subjected to estimation by adopting the estimated load data to obtain third all loads) can meet the requirements, submitting an adjustable and controllable section switch list to be switched to S37, and if the adjustable and controllable section switch list cannot reach an adjustable and controllable target, switching to S35;
s35, finally selecting an outgoing line switch, adopting the whole line for regulation, taking other user loads except for important class and electricity-protection class users controlled by the outgoing line switch as fourth regulated user loads under the condition of avoiding regulation and control of the important class users and the electricity-protection class user lines, sequentially increasing regulated load resources according to the sequence of industrial class power utilization, commercial service industry power utilization, other power utilization and resident class power utilization, submitting a regulated outgoing line switch list to S37 if all collected loads can meet the requirements, and turning to S36 if the regulated outgoing line switch list cannot meet the regulation and control target;
s36, returning that the regulation and control target cannot be achieved, and ending the process;
and S37, sequencing the regulated load values from large to small according to the hierarchical switch, outputting a list of the regulated equipment, and ending the process.
And S4, selecting execution equipment according to the controllable equipment list when regulation and control are executed. When the execution equipment is selected, the execution equipment needs to be arranged in the level adjustable equipment list according to the magnitude sequence of the affected load values, and the adjustable equipment slightly exceeding the magnitude of the gross load value is selected according to the gross load to be cut.
And S5, the dispatcher audits the scheme and performs one-key sequential control, judgment is performed after the scheme is finished, and S3 is returned or finished according to the finishing condition.
In this step, the one-key sequential control refers to a process of automatically executing the whole control flow of switching the load to supply and then cutting off the load according to the load regulation and control scheme by the power distribution automation system. And judging after the regulation and control is finished, namely comparing the real-time data through remote signaling data survey after the regulation and control is finished, and judging whether the regulation and control target is reached according to a comparison result. For the normalized load regulation and control task, executing according to a set period of controllable equipment strategies, if the result is judged to not reach the regulation and control target after executing, returning to S3 for re-executing, and at the moment, converting the regulation and control task into an emergency load regulation and control task; and for the abnormal load regulation and control tasks and the emergency load regulation and control tasks, judging that the regulation and control targets are not reached after the execution of the tasks, similarly returning to S3 for re-execution, and switching the regulation and control tasks to the emergency load regulation and control tasks.
The invention is further illustrated by the following specific example.
In this embodiment, the controllable feeders of the local distribution automation system are L1 and L2, and the lines are shown in fig. 3 and fig. 4, and all the feeders are marked as automation switches.
Step 1, according to controllable equipment of different levels of a circuit, a controllable load resource pool is accurately constructed for the automatic system.
The feeder line L1 relates to an outgoing switch S101, covers section switches S102 and S103, a branch switch S104 and relates to boundary switches S105, S106, S107, S108, S109 and S110; the feeder L2 relates to an outgoing switch S201, covers section switches S202, S203, branch switches S204, S205, and relates to demarcation switches S206, S207, S208, S209, S210.
The controllable load resource pool constructed by the feeder line relates to the switching equipment number, the controllable load size, the user attribute and the user type as follows:
step 2, carrying out normalized power grid load monitoring, and according to a regulation target given by a superior department, reducing 90k kilowatt short-time load according to the system prediction requirement of 13-15;
and 3, generating a load regulation and control scheme based on the normalized load regulation and control, giving a list of the controllable and controlled equipment, and showing the user to be regulated and controlled.
Firstly, aiming at a boundary switch of a line L1, determining that switches S107 and S109 can be selected at the moment due to important user attributes of S110, and controlling 65k kilowatts in total; the boundary switches of the line L2 are all non-industrial users, so that no switch is controllable; therefore, in the boundary switch, the load transfer step of the adjustable equipment list has no switch, the load cutting step relates to switches S107 and S109, the total amount of 65k kilowatts is related, and the adjustment target cannot be met at the moment;
secondly, for the branch switch of the line L1, because the important user attribute of S110 determines that no switch is controllable, the switch can be selected to be the switch of S107 and the switch of S109, and 65k kilowatts can be controlled totally; the branch switch of the line L2 and the S204 are used for residential electricity, so that the S205 switch is controllable, the S205 switch can be selected and can control 30k kilowatts; therefore, after the branch switch part is added, the load supply step of the controllable equipment list is not switched, the load cutting step involves the switches of S107, S109 and S205, and involves the total amount of 95k kilowatts, and at the moment, the control target is met, and relevant information is output to the system.
According to the ordered power utilization target, a period regulation strategy issued in advance is 13-00 per day, S109, S107 and S205 switches are arranged in a controllable equipment list from large to small, and the 95k kilowatt short-time load can be reduced by executing a load cutting step;
step 4, in 13-15 per day, selecting switches S109, S107 and S205 according to a regulation strategy to execute load shedding, and determining to reduce the 95k kilowatt short-time load;
step 5, at 13:00 every day, a dispatcher refers to the current scheme and performs one-key sequential control, and after the completion, judgment is performed to determine that the execution result is successful;
step 6, executing on the third day to cause problems, wherein the whole load is increased, the whole target still cannot be met after the short-time load of 95k kilowatts is reduced, and the short-time load of 20k kilowatts is cut off within half an hour according to the requirement of a superior department, so that a very dynamic load regulation and control task is formulated, and a switch S203 is selected to cut off the load, so that the short-time load of 25k kilowatts can be reduced;
the method comprises the following steps that abnormal load regulation and control are carried out according to a superior regulation and control target, a section switch is selected, S102 of a line L1 relates to industrial electricity utilization and residential electricity utilization, and S103 relates to residential electricity utilization, so that no switch is controllable; s202 of the line L2 relates to commercial service power utilization and residential power utilization, and S203 relates to commercial service power utilization, so that a switch of the S203 can be selected to control 25k kilowatts;
and 7, in step 13, in step 30, the dispatcher reviews the scheme and performs one-key sequential control, after the scheme is finished, the judgment is performed, the execution result is determined to be successful, and the work flow is finished.
According to multiple influence factors such as time urgency, influence range and the like, monitoring, decision-making and control functions of the existing distribution automation system are considered, a corresponding working process is constructed, and accurate load regulation and control are achieved. When the method is used for regulation and control, according to attributes such as different switch equipment levels of controllable equipment, controllable load sizes, electricity utilization types and user types, the control range is gradually increased from low to high according to importance in a layered selection mode, and the load is flexibly and accurately regulated and controlled in a mode of expanding the influence degree in a stepped mode, so that an electricity utilization load gap possibly occurring in the peak period of electricity utilization can be effectively coped with, and the negative influence of the electricity supply and demand gap on the economic society is reduced to the minimum.
The second embodiment of the present invention relates to a load precision regulation and control device based on distribution automation, including:
the system comprises a construction module, a control module and a management module, wherein the construction module is used for constructing a controllable load resource pool for a distribution network automation system according to controllable equipment at different levels in a line, the controllable load resource pool takes a controllable user load group as a resource and is established and maintained by the configuration of the user load group which can be covered by each controllable equipment, and the attribute information of the user load group comprises a controllable equipment id, a user attribute and a load size;
the regulation and control range confirmation module is used for carrying out normalized power grid load monitoring and confirming the regulation and control range according to a given regulation and control target;
the regulation and control scheme generation module is used for determining a task type according to time urgency, generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and giving a controllable device list;
an execution module for selecting an execution device according to the controllable device list when performing regulation and control
The controllable equipment comprises a demarcation switch, a branch switch, a section switch and an outgoing switch on a feeder line. The user attributes comprise user types and user importance, and the user types comprise industrial users, residential users, business users and other users; the user importance includes an importance class, a power conservation class, an elimination class, a limitation class, an excess capacity class, and other classes.
The regulatory scheme generation module comprises:
the estimated load data determining unit is used for determining estimated load data required to be used according to the task type;
the regulated user load determining unit is used for determining the user load needing to be regulated according to importance layers of the controllable devices of different levels;
and the output unit is used for sequencing and outputting the regulated user load according to the regulated load data of the controllable equipment of each level from large to small to obtain a regulated equipment list.
The estimated load data determining unit is used for adopting long-term estimated load data when the task type is a normalized load regulation task, adopting short-term estimated load data when the task type is a non-normalized load regulation task, and adopting real-time monitoring load data when the task type is an emergency load regulation task.
The regulated user load determining unit comprises:
the first determining subunit is used for selecting the demarcation switch, taking the user loads of eliminated classes, limited classes, excess capacity classes and other classes in the industrial users controlled by the demarcation switch as a first regulated user load, adopting the estimated load data to estimate the first regulated user load to obtain a first total load, judging whether the first total load can meet the requirement, and adopting the second determining subunit if the first total load cannot meet the requirement.
And the second determining subunit is used for selecting a branch switch, taking the user loads of elimination types, limitation types, excess capacity types and other types of commercial users, industrial users and other users controlled by the branch switch as second regulated user loads, predicting the second regulated user loads by adopting the predicted load data to obtain a second total load, judging whether the second total load can meet the requirement, and if the second total load cannot meet the requirement, adopting the third determining subunit.
And the third determining part is used for selecting a section switch, switching important users and power protection users controlled by the section switch through a line with low line load rate, taking other user loads as third regulated user loads, adopting the estimated load data to estimate the third regulated user loads to obtain a third total load, judging whether the third total load can meet the requirements, and adopting a fourth determining subunit if the third total load cannot meet the requirements.
And the fourth determining part is used for selecting the outgoing switch, taking other user loads except the important class and the electricity-protecting class controlled by the outgoing switch as fourth regulated user loads, and sequentially increasing and controlling load resources according to the sequence of industrial users, commercial users, other users and residential users.
Accurate regulation and control device of load based on distribution automation still include:
the comparison module is used for carrying out real-time data comparison through remote signaling data enrollment;
and the judging module is used for judging whether the regulation and control target is reached according to the comparison result, and if the regulation and control target is not reached, the emergency load regulation and control task is adopted to generate the regulation and control scheme by adopting the regulation and control scheme generating module again.
A third embodiment of the present invention relates to an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for accurately regulating and controlling load based on power distribution automation according to the first embodiment when executing the computer program.
A fourth embodiment of the present invention relates to a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the distribution automation-based load precision regulation method of the first embodiment.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the invention can be realized by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A load accurate regulation and control method based on distribution automation is characterized by comprising the following steps:
the method comprises the steps that a controllable load resource pool is built for a distribution network automation system according to controllable devices of different levels in a line, wherein the controllable load resource pool takes a controllable user load group as a resource, and is created and maintained by user load group configuration which can be covered by each controllable device, and attribute information of the user load group comprises a controllable device id, user attributes and load size;
carrying out normalized power grid load monitoring, and confirming a regulation and control range according to a given regulation and control target;
determining a task type according to time urgency, generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and giving a controllable device list;
and when the regulation and control are executed, selecting the execution equipment according to the controllable equipment list.
2. The distribution automation-based accurate load regulation and control method according to claim 1, wherein the controllable devices comprise demarcation switches, branch switches, section switches and outlet switches on feeders.
3. The distribution automation-based load precision regulation and control method according to claim 1 or 2, wherein the user attributes include user types and user importance, the user types include industrial users, residential users, business users, and other users; the user importance includes an importance class, a power conservation class, a culling class, a limitation class, an excess capacity class, and other classes.
4. The method for accurately regulating and controlling the load based on the distribution automation as claimed in claim 3, wherein the step of generating the load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information to give a controllable device list comprises the steps of:
determining estimated load data to be used according to the task type;
determining user loads needing to be regulated and controlled according to importance layers of controllable devices of different levels;
and sequencing and outputting the regulated user loads according to the regulated load data of the controllable equipment of each level from large to small to obtain a regulated equipment list.
5. The accurate load regulation and control method based on power distribution automation as claimed in claim 4, wherein when the estimated load data to be used is determined according to the task type, when the task type is a normalized load regulation and control task, the estimated load data adopts long-term estimated load data, when the task type is a non-normalized load regulation and control task, the estimated load data adopts short-term estimated load data, and when the task type is an emergency load regulation and control task, the estimated load data adopts real-time monitoring load data.
6. The method for accurately regulating and controlling the load based on the distribution automation as claimed in claim 4, wherein the step of determining the user load to be regulated according to the importance hierarchy of the controllable devices of different hierarchies comprises:
selecting a boundary switch, taking eliminated user loads, limited user loads, excess capacity user loads and other user loads in industrial users controlled by the boundary switch as first regulated user loads, adopting the estimated load data to estimate the first regulated user loads to obtain first total loads, judging whether the first total loads can meet the requirements, and adopting the next step if the first total loads cannot meet the requirements;
selecting a branch switch, taking the user loads of elimination classes, limitation classes, excess capacity classes and other classes in commercial users, industrial users and other users controlled by the branch switch as second regulated user loads, adopting the estimated load data to estimate the second regulated user loads to obtain second total loads, judging whether the second total loads can meet the requirements, and adopting the next step if the second total loads cannot meet the requirements;
selecting a section switch, transferring important users and power protection users controlled by the section switch through a line with low line load rate, taking other user loads as a third regulated user load, predicting the third regulated user load by adopting the predicted load data to obtain a third total load, judging whether the third total load can meet the requirement, and if not, adopting the next step;
and selecting the outgoing switch, taking other user loads except the important class and the electricity protection class controlled by the outgoing switch as fourth regulated user loads, and sequentially increasing regulated load resources according to the sequence of industrial users, commercial users, other users and residential users.
7. The method for accurately controlling load according to claim 1, wherein the method further comprises, after selecting the executing device according to the controllable device list when performing the controlling, the steps of:
carrying out real-time data comparison through remote signaling data enrollment;
and judging whether the regulation target is reached or not according to the comparison result, and if the regulation target is not reached, adopting an emergency load regulation task to regulate again.
8. The utility model provides an accurate regulation and control device of load based on distribution automation which characterized in that includes:
the system comprises a construction module, a control module and a management module, wherein the construction module is used for constructing a controllable load resource pool for a distribution network automation system according to controllable equipment at different levels in a line, the controllable load resource pool takes a controllable user load group as a resource and is established and maintained by the configuration of the user load group which can be covered by each controllable equipment, and the attribute information of the user load group comprises a controllable equipment id, a user attribute and a load size;
the regulation and control range confirmation module is used for carrying out normalized power grid load monitoring and confirming the regulation and control range according to a given regulation and control target; the regulation and control scheme generation module is used for determining a task type according to time urgency, generating a load regulation and control scheme of the regulation and control range based on the task type and the user load group attribute information, and giving a controllable device list;
and the execution module is used for selecting execution equipment according to the controllable equipment list when regulation and control are executed.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the distribution automation based load precise regulation method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for load fine-tuning based on distribution automation according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404658A (en) * | 2023-04-28 | 2023-07-07 | 国网山东省电力公司聊城供电公司 | Method, device and medium for selecting user and switch during emergency load control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404658A (en) * | 2023-04-28 | 2023-07-07 | 国网山东省电力公司聊城供电公司 | Method, device and medium for selecting user and switch during emergency load control |
| CN116404658B (en) * | 2023-04-28 | 2024-04-23 | 国网山东省电力公司聊城供电公司 | Method, device and medium for selecting user and switch during emergency load control |
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