KR102271244B1 - LOAD TRANSFER SYSTEM and METHOD for POWER TRANSMISSION and POWER SUPPLY - Google Patents

Abstract

A power transmission/distribution load switching system of the present invention includes: a power transmission end data collection unit for acquiring measurement data of the power transmission end; a distribution end data collection unit for acquiring measurement data of the distribution end; a power transmission end analysis unit that analyzes power supply capabilities of components of the power transmission end from the measurement data of the power transmission end; a distribution end analysis unit for analyzing power transmission capabilities of components of the distribution end from the measurement data of the distribution end; a prior data creation unit that analyzes the accumulated transmission end measurement data and the distribution end measurement data to generate preliminary data for load prediction; A load conversion solution creation unit that creates a load conversion solution in the event according to the incident that occurred in the system and the instructions of the manager; a manager interface unit for receiving the manager's instructions for the load switching solution; and a database for storing the dictionary data and the manager's instructions.

Description

Transmission and distribution load conversion system and method {LOAD TRANSFER SYSTEM and METHOD for POWER TRANSMISSION and POWER SUPPLY}

It relates to a power grid load switching system capable of adjusting a power supply path when an abnormal situation occurs in the power grid.

Looking at various accidents in the power system in actual operation in recent years, in the power supply network, for local failures such as insulation breakdown of connection parts or failure of switchgear, if prompt load switching measures are not taken from the point of view of the entire power supply network, It can be seen that a full-scale blackout can occur.

The most effective preventive means to prevent the wide-area full-scale blackout in advance is to perform a quick load change in advance using a nearby power distribution network facility (substation, etc.) with available margin in the event of a local failure as described above. .

In the distribution operation network management office of the system, a manager resides and monitors accidents in the power system. However, in the current distribution operation network management system, the resident manager does not have the means to take immediate action against load switching.

This is due to the fact that the calculation of the current flow in the distribution system takes a lot of time, which not only entails a time problem in the overall operation of the automation system, but also causes errors due to the use of performance data or estimated data rather than real-time data.

In the case of building a distribution automation system, accurate real-time tidal current data can be collected by remote measurement, but the concentration of data in a centralized way is excessive, and the amount of calculation based on such real-time data is very large, so the systemic dependence on the distribution automation system There is a problem that is large.

In addition, there are many difficulties in power grid planning using the existing reliability index in a situation where concerns about grid stability are growing due to the recent increase in the introduction of distributed power sources such as new and renewable energy. Unlike conventional generators, renewable energy is a highly volatile energy resource, so the urgency of taking measures to maintain stability such as reserve power within a very short period of time increases.

Republic of Korea Registration No. 10-1643313

An object of the present invention is to provide a load switching system capable of quickly converting a load by a corresponding region to another power supply network when a regional failure occurs.

An object of the present invention is to provide a load conversion system capable of deriving an optimal solution for load conversion in real time by converging transmission/transmission/distribution system information.

Transmission/distribution load conversion system according to an aspect of the present invention, a transmission end data collection unit for acquiring the measurement data of the transmission end; a distribution end data collection unit for acquiring measurement data of the distribution end; a power transmission end analysis unit that analyzes power supply capabilities of components of the power transmission end from the measurement data of the power transmission end; a distribution end analysis unit for analyzing power transmission capabilities of components of the distribution end from the measurement data of the distribution end; a prior data creation unit that analyzes the accumulated transmission end measurement data and the distribution end measurement data to generate preliminary data for load prediction; A load conversion solution creation unit that creates a load conversion solution in the event according to the incident that occurred in the system and the instructions of the manager; a manager interface unit for receiving the manager's instructions for the load switching solution; and a database for storing the dictionary data and the manager's instructions.

Here, the load switching solution includes a plurality of unit solutions as a candidate power grid connection structure; and a score given to each of the unit solutions,

The manager interface unit may display the plurality of unit solutions and points, and accept the manager's unit solution selection.

Here, it may further include a load switching action unit for switching the transmission and distribution load to the selected unit solution.

[Claim 2] The method of claim 1, wherein the load conversion solution creation unit comprises: a capacity of each switchgear at the current time and an amount of power expected to flow to the switchgear for switchgear located on an expected power transmission path in each unit solution. By comparing them, you can create a load switching solution.

Here, the load switching solution may include a recommended load switching unit solution and a recommended holding time.

Transmission and distribution load switching method according to another aspect of the present invention, the monitoring step of the transmission and distribution ends involved in the target power grid; preparing pre-data for transmission/distribution load conversion; recognizing an accident occurring in the power grid; creating a load switching solution for solving the recognized accident; And if the manager's approval for the prepared load conversion solution is secured, it may include the step of reflecting the solution to the system.

Here, the method may further include the step of receiving a load conversion condition from a manager as information necessary to create the load conversion solution.

Here, in the step of reflecting the solution to the grid, when the generated event is an event designated as an emergency in advance by the manager, the load conversion solution may be directly reflected to the power grid.

Here, in the preliminary data preparation step, based on the load data accumulated for a considerable period of time, the expected maximum load of each point or path of the power grid may be determined by applying a statistical technique or machine learning.

Here, in the step of creating the load conversion solution, in the preparation of the load conversion solution according to the input of the manager, the situation analysis according to the load distribution may be performed in units of substations or transformers.

If the load switching system of the present invention according to the above-described configuration is implemented, there is an advantage in that, when a regional failure occurs, the load by the corresponding region is quickly switched to another power supply network, thereby preventing a wide-area blackout in advance.

The load conversion system of the present invention has the advantage of being able to present an optimal solution for load conversion in real time by fusion of transmission/transmission/distribution system information.

1 is a block diagram illustrating a transmission/distribution load conversion system according to an embodiment of the present invention.
2 is a flowchart illustrating a transmission/distribution load switching method according to an embodiment of the present invention.
3 is a conceptual diagram showing only the structure of pre-data creation in the transmission/distribution load conversion system of FIG. 1 .
4 is a flowchart illustrating an embodiment of a method for preparing prior data that can be performed in the transmission/distribution load switching system of the present invention.
5 is a conceptual diagram showing only the structure of creating a load conversion solution in the transmission/distribution load conversion system of FIG. 1 .
6 is a flowchart illustrating an embodiment of a method for creating a load conversion solution that can be performed in the transmission/distribution load conversion system of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When a component is referred to as being connected or connected to another component, it may be directly connected or connected to the other component, but it can be understood that other components may exist in between. .

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression may include the plural expression unless the context clearly dictates otherwise.

In this specification, the terms include or include are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and includes one or more other features or numbers, It may be understood that the existence or addition of steps, operations, components, parts or combinations thereof is not precluded in advance.

In addition, shapes and sizes of elements in the drawings may be exaggerated for clearer description.

1 shows a transmission/distribution load switching system according to an embodiment of the present invention.

The illustrated transmission/distribution load conversion system includes: a transmission end analysis unit 115 that analyzes the power supply capability (environment) of components of the transmission stage from measurement data of the transmission stage; a distribution end analysis unit 125 that analyzes the power transfer capability (environment) of the components of the distribution stage from the measurement data of the distribution stage; a prior data creation unit 140 that analyzes the accumulated transmission end measurement data and the distribution end measurement data to secure preliminary data for load prediction; A load conversion solution creation unit 160 that creates a load conversion solution in the event according to the incident that occurred in the system and the instructions of the manager; The manager interface unit 180 for receiving the manager's instructions for the load switching solution; and a database 150 for storing the dictionary data and the manager's instructions.

The transmission end analysis unit 115 is a transmission end data collection unit 110 that collects and stores the measurement data of the transmission end, and may collect necessary measurement data from the SCADA database.

The distribution end analysis unit 125 is a distribution end data collection unit 120 that collects and stores the measurement data of the distribution end, and may collect necessary measurement data from the DAS database.

The prior data creation unit 140, based on the time when it is necessary to determine a countermeasure (eg, when a ground fault occurs, when a ground fault occurs, or when a ground fault occurs or when the occurrence of a ground fault is recognized), prior data that is a basis for predicting the future power grid situation write It is for predicting the future power grid situation from the accumulated information of the past monitoring information for the power grid, and applies statistics or AI to the prior data for predicting the future situation. An example of a specific dictionary data preparation process will be described later.

The load conversion solution creation unit 160 compares the capacity of each switchgear at the current time with the amount of power expected to flow to the switchgear with respect to the switchgear located on the expected power transmission path in each unit solution, You can write a load-switching solution.

The load conversion solution creation unit 160 prepares a load conversion solution as a power supply path adjustment plan for the power grid as a countermeasure when an accident occurs in the power grid managed/monitored by the transmission/distribution load conversion system. Depending on the implementation, the prepared load switching solution is directly applied to switch the load power supply path of the corresponding power grid, or converts the load power supply path of the corresponding power grid to the unit solution selected by the manager's instruction. An example of the process of creating a specific load conversion solution will be described later.

Through the manager interface unit 180, the transmission/distribution load conversion system provides information (ie, instructions of the manager) on whether the action is urgency, the standard deviation applied value of the normal distribution for the action, the maintenance time of the action, etc. in advance or It can be entered in case of an accident.

The database 150 stores information on instructions received in advance from a manager through the manager interface unit, and stores dictionary data prepared by the dictionary data creation unit 140 .

When the transmission/distribution load switching system implements a structure that directly performs load switching of the corresponding power grid, a load switching action unit (not shown) for switching the transmission/distribution load to the selected unit solution may be further included.

FIG. 2 illustrates a transmission/distribution load conversion method that may be performed in the transmission/distribution load conversion system of FIG. 1 and according to an embodiment of the present invention.

The illustrated transmission/distribution load switching method includes a monitoring step (S10) for the transmission and distribution terminals involved in the target power grid; preparing pre-data for transmission/distribution load conversion (S100); Recognizing an accident that has occurred in the target power grid (S200); Creating a load switching solution for solving the recognized accident (S400); And if the manager's approval for the prepared load conversion solution is secured, it may include a step (S600) of reflecting the solution to the system.

Depending on the implementation, the method may further include a step (not shown) of receiving a load switching condition from a manager as information necessary to create the load switching solution.

First, the process of creating the dictionary data (ie, step S100) will be specifically exemplified.

FIG. 3 is a conceptual diagram illustrating only the structure of pre-data preparation in the transmission/distribution load conversion system of FIG. 1 .

The transmission end analysis unit 115 of FIG. 1 acquires SOMAS substation Mtr load information, SCADA bus operation information, and the like from the SCADA collection device 110 , and the distribution end analysis unit 125 DAS automation from the DAS collection device 120 . It acquires switchgear load information, connection information, status information, and the like.

The transmission end analysis unit 115 and/or the distribution end analysis unit 125 performs data missing value, outlier processing and integration on the obtained information.

FIG. 4 shows an embodiment of a method for preparing pre-data ( S100 ) that can be performed in the transmission/distribution load conversion system of the present invention.

The dictionary data creation unit 140 creates dictionary data through the processes shown in the flowchart of FIG. 4 .

The pre-data preparation method shown as a kind of pre-processing process includes: acquiring distribution system data and distribution load data from a distribution system (DAS) DB (S12); Acquiring transmission and distribution system data and transmission and transformation load data from a transmission and distribution system (SCADA) DB (S21); detecting outliers and missing values for each of the acquired data and performing necessary processing (S30); generating a distribution switch information table from the distribution system data and the processing result thereof, and generating route data (S40); Checking and processing outliers and missing values of the path data (S50); Completing the distribution switch information table (S55); Generating load factor data for each switch section by summing distribution load data and transmission and substation load data (S60); generating a current reference system DB by analyzing transmission and distribution system data (S70); and generating a table for analysis by combining the distribution switch information table, the switch load factor table, and the current transmission and substation reference DB (S80).

The table for analysis generated by the above process can be used to predict the future state of the power grid as the aforementioned prior data.

Depending on the implementation, each point (eg, each switchgear installation point) and/or paths (eg, each switchgear installation point) of the corresponding power grid from the voltage/current sensed value measured at each switchgear point by the prior data created by the above-described process. Example: The load amount of the transmission path between 2 switches) can be estimated.

The dictionary data creation unit 140 determines the expected maximum load amount of each point and/or paths of the corresponding power grid based on the load amount data accumulated for a considerable period of time. In determining the maximum load, a statistical technique or AI may be applied.

When AI is applied, the dictionary data creation unit 140 may use past data to learn a machine learning algorithm as a reward for matching a future load, and retain the learned machine learning algorithm as dictionary data. In this case, a value recorded in the analysis table may be used as the learning input value. In this case, the maximum load may be determined as a value that reflects a predetermined margin (which can be given as a ratio or a value) to the future (future) load predicted by the AI.

In the case of applying the statistical technique, in determining the maximum load, a variance (standard deviation) using a normal distribution may be used, and in determining the variance to be applied, it may be linked to the load switching condition determined by the manager. For example, if the administrator gives in advance the statistical reliability (eg, 99.0%, 99.90%, etc.) to be applied to the maximum load estimate as a load conversion condition, the pre-data preparation unit 140 may The maximum load can be calculated as the maximum value from the data width with the corresponding variance (standard deviation).

Next, the process of recognizing the occurrence of the accident (ie, step S200) will be specifically illustrated.

Depending on the implementation, the step S200 may be performed by the transmission end analysis unit 115 and the distribution end analysis unit 125 of FIG. 1 or a separate monitoring unit (not shown).

For example, the step S200 may be performed in such a way that, while monitoring the sensing values of sensors installed in switchgear located at multiple points of the target power grid, a sudden change in voltage and/or current exceeds a predetermined criterion as a failure. .

In addition, in the step S200, as a method of determining the location of the failure, when the failure is determined, related indicators such as the voltage and/or current sensed values at the point where the sudden voltage/current change is reported and nearby points are analyzed can be done in this way. For example, it is possible to determine a point at which a sensor having the largest voltage value is located as a failure point.

Next, the process of creating the load conversion solution (ie, step S400) will be specifically illustrated.

FIG. 5 is a conceptual diagram illustrating only the structure of creating a load conversion solution in the transmission/distribution load conversion system of FIG. 1 .

The load conversion solution creation unit 160 utilizes a data set generated through the preprocessing process performed by the dictionary data creation unit 140 , that is, the dictionary data.

As the basis data for judging whether an accident has occurred and the operation status of the power grid to be managed, the load data is a file of the load level by DL such as the current load, the previous day's maximum load, the monthly maximum load, and the winter/summer expected maximum load according to the user's needs can be registered.

Meanwhile, through the manager interface 180 , the manager may input a user load switching condition. For example, a facility that requires a load switching solution can be entered through a mouse click. At this time, it is possible to input from the minimum distribution line (DL) unit to the substation unit, and whether it is a regular (in case of a truce) or an emergency (in case of failure) can be input. The above unit means a power grid management unit that is the target of switching for load conversion. In the case of failure, power grid switching (load switching) is performed directly with the unit solution with the highest score in the case of failure, and in the above standard, power grid switching (load switching) As a candidate, a load switching solution composed of a plurality of unit solutions is presented to the manager through the manager interface 180 as shown, and a unit solution to be applied can be designated through the manager interface 180 .

The load conversion solution creation unit 160 reads data according to a given input value, finds an optimal solution, and outputs it as a load conversion solution.

6 shows an embodiment of a method (S400) of creating a load conversion solution that can be performed in the transmission/distribution load conversion system of the present invention.

The illustrated method of creating a load conversion solution includes: extracting data related to a user input facility (S410); extracting linked line information data for each line in the facility (S420); Step (S460) of determining whether one-stage transfer (load conversion of the transfer target distribution line to one distribution line) is possible for each connected switchgear (S450), and giving a score for each unit solution using the one-stage transfer switch (S460); (here , the score may be given according to the sum of the DL loads, whether the switchgear is automated, and the MTR load) If there is a one-stage switchable solution, output the corresponding solution in a predetermined order (eg, in the order of lowest score) (S470, S490) ; Step (S480) of calculating the number of cases of two-stage transfer (dividing the transfer target distribution line into two sections and converting the load to two different distribution lines) when the first stage transfer is not possible and giving a score for each solution (S480); (here , the score may be given according to the DL load sum, the degree of equal distribution of the line load, whether or not automation, and the MTR load) If there is a two-stage switchable solution, outputting the corresponding solution according to the score (S485, S490); If there is no solution capable of two-stage transfer, the corresponding line may include a step of determining that transfer is impossible ( S495 ).

Steps S430 in the flowchart shown, in the creation of a load conversion solution, whether to analyze the situation by the load distribution in units of substations or more precisely in units of transformers, depending on the input conditions of the manager. In general, it is possible to obtain a better solution by performing detailed operation in units of transformers, but there is a burden that the amount of calculation is increased and it is desirable to obtain accurate sensing values from all transformers as much as possible. It reflects the manager's decision on the situation analysis unit by judging these matters.

Steps S440 in the illustrated flowchart show that the capacity limit of the target line is determined by emergency conditions. Here, an emergency means an event in which a load switching action is urgently needed. In this case, as shown in the figure, the load reference value of the line subject to the load switching is higher than that of the regular case, thereby increasing the number of possible load switching cases.

In the flowchart shown, stage 1 transfer means load conversion transfer for power sources immediately adjacent to the power grid where the accident occurred, and stage 2 transfer refers to load conversion for power sources adjacent to the power grid adjacent to the accident as well as the power grid where the accident occurred. means cut-off.

Table 1 below shows a load switching solution composed of unit solutions obtained according to the spirit of the present invention during one-stage transfer.

For each unit solution shown in the table above, it is judged whether it is possible to change one stage (load conversion of a distribution line to be transferred to one distribution line) for each connected switch, and a score is given for each solution. Scores are given according to the sum of DL loads, whether the switchgear is automated, and the MTR load. If there is a one-stage switchable solution, the corresponding solution is output in the order of the lowest score. In other words, the lower the score, the more suitable the solution for load switching.

As a measure against an accident, it is desirable to carry out only one-stage changeover and perform full load conversion and power supply because the burden and risk on the entire system is small. However, if the measures are not sufficient as a first-stage transfer, two-stage transfer may be considered. . Here, whether the first-stage transfer action is sufficient may be determined by whether the score of the table reaches a predetermined reference value. For example, in the case of more than 10 points in the above table, the action according to the corresponding unit solution may be considered insufficient.

Table 2 below shows a load switching solution composed of unit solutions obtained according to the spirit of the present invention during two-stage transfer.

For each of the unit solutions shown in the table above, the number of cases of two-stage transfer (a transfer target distribution line is divided into two sections and the load is converted to two different distribution lines) is calculated and a score is given for each unit solution. Points are awarded according to the DL load sum, the level of distribution of the line load evenly, whether or not there is automation, and the MTR load.

Here, whether the two-stage transfer action is sufficient may be determined by whether the score of the table reaches a predetermined reference value. For example, in the case of more than 26 points in the above table, the action according to the corresponding unit solution may be considered insufficient. Comparing the first stage transfer and the second stage transfer, as described above, there is a difference in the factors that give points for each unit solution, and the difference in scores is also significant. Therefore, the comparison of superiority and inferiority according to the score should be separately performed for the first stage switching unit solutions and the second stage switching unit solutions.

As shown, if there is a solution that can be switched in two stages, the corresponding solution is output to the manager according to the score or, in case of an emergency, the load switching action is performed as it is, but if there is no solution with a low score that can be switched in two stages, the corresponding line is switched can be judged as impossible.

According to the implementation, the load conversion solution creation unit 160, in the performance of step S400 of FIG. 2 , the capacity of each switchgear at the current time for the switchgear located on the expected power transmission path in each unit solution A load switching solution can be created by comparing the amount of power expected to flow to the switch and the corresponding switchgear.

Depending on the implementation, the load conversion solution creation unit 160, in step S401 of FIG. 6 , a switch (particularly, a switch in which a change in the amount of power flowing when a load conversion occurs) and/or a line ( The step of obtaining information on the current capacity and the remaining capacity of the DL) may be performed.

The current capacity of the switchgear is calculated in consideration of the fact that the capacity may change according to the age of the switchgear, and sensors are installed in the switchgear for other safety purposes. For example, the resistance of the switch may be calculated using voltage/current measured values from sensors installed in the switch, and the current capacity of the switch may be estimated according to the changed resistance value.

The remaining capacity of the switchgear and/or the line may be calculated as a value obtained by subtracting the load power capacity expected in the future from the current capacity obtained by stipulating or estimating the switchgear and/or the line. Here, the expected load power capacity can be calculated by applying a statistical technique or AI as described above.

Depending on the implementation, the load conversion solution creation unit 160 may create a load conversion solution by performing load distribution in consideration of only active power, like a method intuitively considered by a manager of a power grid operation location.

Calculating the above-described current capacity/remaining capacity of the switch/line means that the status of the switch for connection with the power supply network changes in real time, so even if the switch has a capacity that has no problem in connecting to the power grid at the time of installation, check the current status again it is for In particular, it can have a significant impact on the neighboring power grid, and the need for reconfirmation increases before the second stage transfer involving switchgear/line with overlapping management.

When the above-described current capacity/remaining capacity of the switch/line is calculated, if the current state of the switch cannot be immediately secured, it can be estimated by analyzing the switch monitoring data accumulated in the past.

Next, a method of reflecting the solution to the system (ie, step S600) will be specifically illustrated.

Depending on the implementation, the load conversion solution creation unit 160 may directly apply the prepared load conversion solution to the corresponding power grid (ie, execute load conversion) according to a load conversion condition specified in advance by the administrator. For example, when the load switching condition is an emergency, the load switching action unit may operate the corresponding switch or the like so that the load can be switched immediately without a separate instruction from the manager as the unit solution with the highest score.

On the other hand, when the load switching condition is not emergency (that is, always), the load switching solution composed of a plurality of unit solutions prepared by the load switching solution preparation unit 160 is transmitted through the manager interface unit 180 as shown. It can be visually output to the administrator. In this case, the load conversion action unit may periodically rewrite and output the load conversion solution, and wait for the administrator to select a unit solution to be applied.

Depending on the implementation, the load conversion solution creation unit 160 may include a recommended maintenance time recommended for each unit solution. In this case, for example, the load switching action unit sets the recommended maintenance time to 1 month, and restores the power grid accident (ground fault, etc.) within the recommended maintenance time when the peak of summer power use is reached after 1 month. It can be actively alerted.

In particular, when the load switching condition is an emergency, it is inevitably an urgent emergency measure, and it is difficult to see that there has been a sufficient review by the manager for this, so it is advantageous to apply the recommended holding time.

Those skilled in the art to which the present invention pertains should understand that the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics thereof, so the embodiments described above are illustrative in all respects and not restrictive. only do The scope of the present invention is indicated by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. .

100: Transmission and distribution load conversion system 110: Transmission end data collection unit
115: transmission end analysis unit 120: distribution end data collection unit
125: distribution end analysis unit 140: pre-data preparation unit
150: load conversion solution writing unit 160: administrator interface
180 : database

Claims (10)

a power transmission end data collection unit for acquiring measurement data of the power transmission end;
a distribution end data collection unit for acquiring measurement data of the distribution end;
a power transmission end analysis unit that analyzes power supply capabilities of components of the power transmission end from the measurement data of the power transmission end;
a distribution end analysis unit for analyzing power transmission capabilities of components of the distribution end from the measurement data of the distribution end;
a prior data creation unit that analyzes the accumulated transmission end measurement data and the distribution end measurement data to generate preliminary data for load prediction;
A load conversion solution creation unit that creates a load conversion solution in the event according to the incident that occurred in the system and the instructions of the manager;
a manager interface unit for receiving the manager's instructions for the load switching solution; and
Including a database for storing the dictionary data and the instructions of the administrator,
The load conversion solution may include a plurality of unit solutions as a candidate power grid connection structure; and
Including the points given to each unit solution,
The manager interface unit,
display the plurality of unit solutions and scores;
Transmission and distribution load conversion system that accepts the manager's unit solution selection.
delete According to claim 1,
A load conversion action unit that converts the transmission/distribution load to the selected unit solution
Transmission and distribution load conversion system further comprising a.
The method of claim 1, wherein the load conversion solution preparation unit,
A transmission/distribution load conversion system that creates a load conversion solution by comparing the capacity of each switchgear at the present time and the amount of power expected to flow to the switchgear for switchgear located on the expected power transmission path in each unit solution
According to claim 1,
The load conversion solution is
Transmission and distribution load transfer systems with recommended load transfer unit solutions and recommended holding times.
A monitoring step for the transmission and distribution ends involved in the target power grid;
preparing pre-data for transmission/distribution load conversion;
recognizing an accident occurring in the power grid;
creating a load switching solution to solve the recognized accident; and
When the manager's approval for the prepared load conversion solution is secured, the solution is reflected in the system
including,
The load conversion solution may include a plurality of unit solutions as a candidate power grid connection structure; and a score given to each of the unit solutions,
When the manager's approval for the prepared load conversion solution is secured, in the step of reflecting the solution to the system, the transmission/distribution load conversion method receives the manager's unit solution selection.
7. The method of claim 6,
Receiving a load conversion condition from a manager as information necessary to create the load conversion solution
Transmission and distribution load switching method further comprising a.
7. The method of claim 6,
In the step of reflecting the solution to the system,
When the generated event is an emergency designated by the manager in advance, a load conversion solution is directly reflected in the power grid.
7. The method of claim 6,
In the pre-data preparation step,
A transmission/distribution load conversion method that determines the expected maximum load of each point or path of the power grid by applying statistical techniques or machine learning based on load data accumulated for a considerable period of time.
7. The method of claim 6,
In the step of creating the load conversion solution,
A transmission/distribution load conversion method in which a situation analysis by load distribution is performed in units of substations or transformers when creating a load conversion solution according to the input of the manager

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