KR102240556B1 - Methods and apparatuses for operating power generator combined with heterogeneous renewable energy - Google Patents

Abstract

The present invention relates to a method and apparatus for operating a power generation source combined with a heterogeneous renewable energy source, and a method for operating a power generation source combined with a heterogeneous renewable energy source according to an embodiment of the present invention includes Predicting the power generation amount of different renewable energy based on the power generation facility capacity and respective environmental information corresponding to the different renewable energy, respectively determining a power generation unit price based on the estimated power generation amount and each power market price. Step, calculating a generation rate for the heterogeneous renewable energy by using the determined power generation unit price and each generation efficiency of a power generation source for the heterogeneous renewable energy, and comparing the calculated generation rate and the customer price to generate electricity. And controlling the operation of the circle.

Description

A power generation source operating method and device combining different renewable energy sources {METHODS AND APPARATUSES FOR OPERATING POWER GENERATOR COMBINED WITH HETEROGENEOUS RENEWABLE ENERGY}

The present invention relates to a method and apparatus for operating a power generation source in which heterogeneous renewable energy sources are combined.

With the development of the energy industry and national institutional changes, the introduction of new and renewable energy increases and the energy system is decentralized, and the introduction of energy storage devices is gradually increasing.

In general, new and renewable energy refers to the combination of new energy and renewable energy. It refers to energy used by converting existing fossil fuels or converting them into renewable energy including sunlight, water, precipitation, and biological organisms. Renewable energy includes solar, solar, bio, wind power, and hydropower, and new energy includes fuel cells and hydrogen energy.

The energy storage system (ESS) is a connection between a renewable energy generation system represented by solar power and a power storage system, and stores renewable energy or surplus power from the power system in a battery capable of charging and discharging, and when necessary. It is a system that supplies power to the load.

There are increasing cases of introducing energy storage devices not only to large power plants or government offices, but also to commercial facilities and homes. This is not only increasing the introduction of new and renewable energy, but also due to changes in the energy price system such as the differential rate system for each time period. The energy storage device is not only for the purpose of simply storing and using the power generated by the power generation source, but also for stabilizing the power supply and demand, and for the purpose of reducing demand and reducing electricity bills by adjusting the peak demand and demand by time. This is because the cases of introduction have expanded. In addition, as interest in small-scale distributed resources incorporating energy storage devices has increased, the need for control and prediction technology for energy storage devices has increased.

In general, an energy storage device linked to a renewable energy generation source charges a battery with renewable energy or power from a system, and when power supply to the load is required, power is supplied to the load through any one of renewable energy, system, and battery. Supply. Interest in renewable energy and energy storage devices is gradually increasing, and system complexity is gradually increasing as energy storage devices charge batteries and supply power to loads through a plurality of power supply sources. Accordingly, there is a need for a technology that is optimized according to the characteristics of a renewable energy source in which a plurality of renewable energies are combined and can more efficiently manage the storage and consumption of heterogeneous renewable energies. Although control and prediction technologies for various energy storage devices are being developed, only power generation control and power storage operations for individual renewable energy sources are being performed even when heterogeneous renewable energy sources are combined.

In the embodiments of the present invention, in the operation of a power generation source combining heterogeneous renewable energy sources (e.g., small power, solar power, ESS), the amount of power generation of the heterogeneous renewable energy sources is calculated in consideration of the characteristics of the power generation sources between the different types of renewable energy. It is intended to provide a method and apparatus for operating a power generation source combined with a heterogeneous renewable energy source, which can reduce power generation cost by controlling and operating a heterogeneous renewable energy source.

Embodiments of the present invention are a method of operating a power generation source combined with different renewable energy sources, which can reduce power generation costs compared to when configured as a single power source by operating a power generation source combined with different renewable energy sources. And an apparatus.

According to an embodiment of the present invention, the steps of predicting each generation amount of the different types of renewable energy based on the capacity of each power generation facility for the different types of renewable energy and the respective environmental information corresponding to the different types of renewable energy; Determining a power generation unit price based on the predicted power generation amount and each power market price; Calculating a power generation fee for the heterogeneous renewable energy by using the determined power generation unit price and each generation efficiency of a power generation source for the heterogeneous renewable energy; And controlling the operation of the power generation source by comparing the calculated power generation rate and the customer price, and a method of operating a power generation source in which heterogeneous renewable energy sources are combined may be provided.

The step of predicting each generation amount of the heterogeneous renewable energy includes combining season information, dry season information, rainy season information, solar radiation information, temperature information, precipitation information, air volume information, and at least one environmental information to determine the generation amount of the heterogeneous renewable energy. Each can be predicted.

The step of determining each power generation cost includes comparing the actual power generation amount for the power generation facility of the heterogeneous renewable energy with the predicted power generation amount, and when it exceeds a preset error rate, the predicted power generation amount is converted into the power generation measurement amount. By changing, the unit price of power generation can be confirmed.

In the calculating of the power generation rate, when the power generation efficiency is less than a preset reference power generation efficiency, a power generation rate is calculated by reflecting each power generation efficiency in the respective determined power generation unit price, and the power generation efficiency is a preset reference power generation efficiency. If it is more than one, each of the determined power generation costs can be calculated as power generation rates.

The method further comprises the step of monitoring whether the power generation efficiency of at least one power generation source among power generation efficiencies of the power generation source for different types of renewable energy after a preset time is greater than or equal to a preset reference efficiency, and calculating the power generation rate. In the step, if the power generation efficiency of the at least one power generation source is equal to or greater than a preset reference efficiency, the determined power generation cost may be calculated as a power generation rate.

The step of calculating the power generation fee includes calculating an average unit price of each of the determined power generation unit prices, and using the calculated average unit price and each generation efficiency of a power generation source for heterogeneous renewable energy to generate power for heterogeneous renewable energy. You can calculate the fee.

The step of calculating the power generation rate includes calculating the power generation efficiency of each of the different power generation sources for the different renewable energy, and applying the integrated efficiency integrating the calculated power generation efficiency as the system efficiency for the heterogeneous power generation source. Generation rates for renewable energy can be calculated.

In the controlling of the operation of the power generation source, when the calculated generation rate is less than the customer price, power generation may be instructed to supply the generated power to the customer.

In the controlling of the operation of the power generation source, when the calculated power generation rate is equal to or greater than the customer price, the generation of the heterogeneous renewable energy may be waited for or the generated power may be stored in an energy storage device.

On the other hand, according to another embodiment of the present invention, a communication module for communicating with a renewable energy source and receiving respective environmental information corresponding to the heterogeneous renewable energy; A memory for storing at least one program; And a processor connected to the communication module and the memory, wherein the processor executes the at least one program, and the capacity of each power generation facility for heterogeneous renewable energy and respective environmental information corresponding to the heterogeneous renewable energy Based on the prediction of each generation amount of different renewable energy, each determination of a generation unit price based on the estimated generation amount and each power market price, and the determined generation unit price and the generation source for the different renewable energy. A power generation source operating device combined with a different renewable energy source that calculates a power generation rate for different types of renewable energy using each power generation efficiency, and controls the operation of a power generation source by comparing the calculated generation rate and customer price. Can be provided.

The processor may predict each generation amount of heterogeneous renewable energy by combining at least one environmental information from among dry season information, rainy season information, insolation information, temperature information, and precipitation information.

The processor determines the power generation cost by comparing the measured amount of power generation for the power generation facility of the heterogeneous renewable energy with the estimated amount of power generation, and when it exceeds a preset error rate, changes the predicted amount of power generation to the measured amount of power generation. can do.

The processor calculates a power generation rate by reflecting each power generation efficiency to the determined power generation unit price when the power generation efficiency is less than a preset reference power generation efficiency, and determines each power generation efficiency when the power generation efficiency is greater than or equal to a preset reference power generation efficiency. The generated power generation unit price can be calculated as a power generation fee.

The processor monitors whether the power generation efficiency of at least one power generation source is greater than or equal to a preset reference efficiency among power generation efficiencies of power generation sources for different renewable energy after a preset time, and the power generation efficiency of at least one power generation source is preset. If it is more than the reference efficiency, each of the determined power generation costs may be calculated as power generation rates.

The processor may calculate an average unit price of each of the determined generation unit prices, and calculate a generation rate for heterogeneous renewable energy by using the calculated average unit price and each generation efficiency of a power generation source for heterogeneous renewable energy. have.

The processor calculates each power generation efficiency of the heterogeneous power generation source with respect to the heterogeneous renewable energy, and applies the integrated efficiency obtained by integrating the calculated power generation efficiency as the system efficiency of the heterogeneous power generation source. Generation charges can be calculated.

When the calculated generation rate is less than the customer price, the processor may instruct power generation and supply the generated power to the customer.

The processor may wait for generation of the heterogeneous renewable energy or store the generated power in an energy storage device when the calculated generation rate is equal to or greater than the customer price.

In the embodiments of the present invention, in the operation of a power generation source combining heterogeneous renewable energy sources (e.g., small power, solar power, ESS), the amount of power generation of the heterogeneous renewable energy sources is calculated in consideration of the characteristics of the power generation sources between the different types of renewable energy. By controlling and operating heterogeneous renewable energy sources, it is possible to reduce the cost of power generation.

Embodiments of the present invention can reduce the cost of power generation than when configured as a single power source by operating a power generation source combined with different types of renewable energy sources.

1 is a configuration diagram illustrating a renewable energy management system to which an embodiment of the present invention is applied.
2 is a flowchart illustrating a method of determining a power generation cost in a method of operating a power generation source according to an embodiment of the present invention.
3 is a flowchart illustrating a power generation source operation control process in a power generation source operating method according to an embodiment of the present invention.
4 is a flowchart illustrating a power storage process in a method of operating a power generation source according to an embodiment of the present invention.
5 is a configuration diagram for explaining the configuration of a power generation source operating apparatus in which heterogeneous renewable energy sources are combined according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, in order to facilitate an overall understanding, the same reference numerals are used for the same elements in the drawings, and duplicate descriptions for the same elements are omitted.

1 is a configuration diagram illustrating a renewable energy management system to which an embodiment of the present invention is applied.

As shown in Figure 1, the renewable energy management system 100 to which an embodiment of the present invention is applied is a system power supply 110, a renewable energy generation source 120, a load 130, a power generation source operating device ( 140) and an energy storage device 150. However, not all of the illustrated components are essential components. The energy management system may be implemented by more components than the illustrated components, and the energy management system may be implemented by fewer components.

Hereinafter, a detailed configuration and operation of each component of the energy management system of FIG. 1 will be described.

In general, the system power supply 110 may be a power plant that supplies power to the load 130. The grid power supply 110 supplies power generated through the power plant to the load 130.

The renewable energy power generation source 120 represents a power generation facility that performs power generation using different types of renewable energy such as solar power, small power, wind power, tidal power, and the like. In addition, the renewable energy power generation source 120 may include a configuration capable of converting natural energy into electrical energy or thermal energy. For example, the renewable energy power generation source 120 may include a solar power generation source 121, a small power generation source 122, and a wind power generation source 123. The renewable energy power generation source 120 may include a power generation source capable of generating heterogeneous renewable energy.

The load 130 represents a consumer who consumes power, and represents a facility that consumes power, such as a home, a building, or a factory. Household or industrial facilities may be the subject of power consumption, and specific requirements such as required amount of power and voltage may vary depending on the type and time of each consumer.

The energy storage device 150 stores energy by charging the electric power produced by the renewable energy generation source 120 into a battery. The energy storage device 150 may discharge the battery under the control of the power generation source operating device 140 and supply the stored power to the load 130 or the power grid. The energy storage device 150 may include a battery, a power conditioning system (PCS), and a battery management system (BMS).

In the power generation source operating device 140 according to an embodiment of the present invention, in the operation of a power generation source combining heterogeneous renewable energy sources (eg, small power, solar power, ESS), by controlling the amount of generation of different types of renewable energy sources By operating a renewable energy source, it is possible to reduce the cost of power generation. In addition, the power generation source operating device 140 according to an embodiment of the present invention can reduce the power generation cost compared to when configured as a single power source by operating a power generation source combined with different renewable energy sources. In this way, the power generation source operating device 140 supplies power by using various information such as generation amount prediction, environmental information, and power market price when generating power using heterogeneous renewable energy such as solar power, small power, wind power, tidal power, etc. Electricity can be produced so that the city can generate the most profits. The power generation source operating device 140 may generate power by selecting and operating at least one power generation source in consideration of the types and characteristics of the different renewable energy power generation sources. For example, as a result of analyzing using various information, the power generation source operating device 140 can generate only the photovoltaic power generation source 121 when operating only the photovoltaic power generation source 121 is effective in reducing the power generation cost. . The power generation source operating device 140 may operate both power generation sources when operating the solar power generation source 121 and the small-scale power generation source 122 at the same time is efficient for power generation. The power generation source operating device 140 may be implemented or included in a power management system (PMS) or an energy management system (EMS).

The power generation source operating device 140 according to an embodiment of the present invention may operate a heterogeneous renewable energy source in consideration of the cost between the maximum power source and the minimum power source for each season in order to reduce the power generation cost. In addition, the power generation source operating device 140 according to an embodiment of the present invention may operate a heterogeneous renewable energy source in consideration of environmental information related to the heterogeneous renewable energy source. In addition, the power generation source operating device 140 according to an embodiment of the present invention may operate a heterogeneous renewable energy source based on a power rate, a demand prediction, and a power generation prediction in combination with power demand.

First, the case of considering the cost between the maximum and minimum power generation sources for each season will be described in order to reduce the power generation cost. For example, in Southeast Asia, where the wet and dry seasons have clear seasonal characteristics (eg, Malaysia, Vietnam, etc.), small-scale power generation has the lowest power generation cost due to the best power generation and power generation efficiency during the rainy season. However, in the dry season of these regions, on the contrary, solar power generation is the best, and small-scale power generation has little power generation and power generation efficiency is low. Actually, it is not good in terms of power generation cost.

Therefore, the power generation source operating device 140 according to an embodiment of the present invention can continuously generate the small power generation source 122 during the rainy season and generate solar power generation intermittently. At this time, the power generated from the small power generation source 122 with good power generation efficiency and power generation is stored in the energy storage system (ESS) 150, and the power generated through solar power generation is immediately generated by the load 130 ) To be supplied. Since the power produced through the small power generation source 122 and stored in the energy storage device 150 has a very low power generation cost, the power generation source operating device 140 uses the power stored in the energy storage device 150 at the most expensive time, that is, If the discharged power is supplied to the load 130 by discharging at a time having the maximum customer price, the greatest effect can be obtained economically. On the contrary, in the dry season, the power generation source operating device 140 stores power generated through the solar power generation source 121 in the energy storage device 150. The power plant operating device 140 may wait for small hydro power generation during the dry season. As an example, the power generation source operating device 140 temporarily stores water without generating power through the sluice control of the small power generation source 122, and then operates the small power generation by using the stored water at the time when the power cost is the highest. So that the cost of power generation can be reduced.

Next, a case of operating a power plant in consideration of environmental factors in order to reduce power generation costs will be described. For example, when the temperature of the solar power source 121 rises during the dry season and reaches a certain point, the temperature of the photovoltaic power generation panel also rises, resulting in an effect of lowering the photovoltaic power generation efficiency. In this case, the power generation source operating device 140 stores the power generated through the solar power generation source 121 in the energy storage device 150. Thereafter, the power generation source operating device 140 supplies the power stored in the energy storage device 150 to the load 130 at a time when the power cost is expensive or the peak power demand occurs, and thus the power cost compared to the actual power generation cost. The difference can be made the largest. Through this, the electricity generation rate when electric power is supplied to the customer is lowered. Therefore, in this case, the amount of insolation information, the actual solar panel information, and the power market price information may be factors that determine the operation of the solar power generation source 121 by the power generation source operating device 140.

Next, a case of operating a heterogeneous renewable energy source based on electricity rate, demand prediction, and generation prediction in combination with electricity demand will be described. First, the power generation source operating device 140 fetches in real time information on power demand from a measuring instrument installed at the load 130 stage. The EMS (Energy Management System) predicts the demand for the day based on previous power reception information or predetermined power reception information. The predicted value is generated the day before, and the generated value is corrected through the measured value to make an actual prediction. At this time, the power generation source operating device 140 continuously generates power when there is insufficient power generated by the demand prediction. However, when it is determined that surplus power is generated, the power generation source operating device 140 stores the surplus power in the energy storage device 150 or, in the case of the small power generation source 122, controls power generation by closing the sluice gate of the power generation source. I can. However, even if the amount of power generation is insufficient, the power generation source operating device 140 stops power generation when the power generation fee is lower than the power cost generated by the system power source (generator) 110. At this time, the load (home) 130 uses the power of the electric power company, which is the system power supply 110. Thereafter, the power generation source operating device 140 may use the stored surplus power when the peak time of the load 130 or the power cost exceeds a preset power rate. On the other hand, in the case of small-scale power generation, the power generation source operating device 140 may control the current rainfall information from the rainfall level sensor through power generation prediction based on the current rainfall information and the existing rainfall information. In this case, the factors controlling the power generation cost are based on electricity rates, demand forecasts, and generation forecasts.

In this way, the power generation source operating device 140 according to an embodiment of the present invention may operate the power generation source by controlling the amount of power generation in order to reduce the power generation cost. Hereinafter, a specific operation of the power generation source operating device 140 for reducing the power generation cost will be described.

The power generation source operating device 140 predicts each generation amount of different types of renewable energy based on the capacity of each generation facility for different types of renewable energy and each environmental information corresponding to the different types of renewable energy, and predicts the amount of generation of different types of renewable energy, respectively. Each generation unit price is determined based on the electricity market price. Here, the power generation source operating device 140 may predict each generation amount of different renewable energy by combining season information, dry season information, rainy season information, solar radiation information, temperature information, precipitation information, air volume information, and at least one environmental information. . The power generation source operating device 140 compares the measured amount of power generation for power generation facilities of different types of renewable energy with each predicted amount of power generation, and when it exceeds a preset error rate, changes the predicted amount of power generation to the measured amount of power generation to generate the unit cost of power generation. Can be confirmed.

In addition, the power generation source operating device 140 calculates a power generation fee for the heterogeneous renewable energy by using the determined power generation unit price and each generation efficiency of the power generation source for the heterogeneous renewable energy. Here, when each power generation efficiency is less than a preset reference power generation efficiency, the power generation source operating device 140 calculates a power generation rate by reflecting each power generation efficiency to the determined power generation unit price, and each power generation efficiency is equal to or greater than a preset reference power generation efficiency. In this case, each of the determined power generation costs may be calculated as power generation rates. The power generation source operating device 140 monitors whether or not the power generation efficiency of at least one power generation source is greater than or equal to a preset reference efficiency among power generation efficiencies of the power generation source for heterogeneous renewable energy after a preset time, and power generation of at least one power generation source. If the efficiency is greater than or equal to the preset reference efficiency, the respective determined power generation cost may be calculated as a power generation rate. The power generation source operating device 140 calculates the average unit price of each determined power generation unit price, and uses the calculated average unit price and each generation efficiency of the power generation source for heterogeneous renewable energy to calculate the generation rate for different renewable energy. Can be calculated. The power generation source operating device 140 calculates the power generation efficiency of each of the different power generation sources with respect to the heterogeneous renewable energy, and applies the integrated efficiency by integrating the calculated power generation efficiency as the system efficiency for the heterogeneous power generation source. You can calculate the generation charge for

In addition, the power generation source operating device 140 controls the operation of the power generation source by comparing the calculated power generation rate and the customer price. Here, the power generation source operating device 140 may instruct power generation and supply the generated power to the customer when the calculated generation rate is less than the customer price. The power generation source operating device 140 may wait for generation of different types of renewable energy or store the generated power in the energy storage device 150 if the calculated generation rate is equal to or greater than the customer price.

2 is a flowchart illustrating a method of determining a power generation cost in a method of operating a power generation source according to an embodiment of the present invention.

In step S101, the power generation source operating device 140 acquires the power generation facility capacity and environmental information for the heterogeneous renewable energy.

In step S102, the power generation source operating device 140 predicts a power generation amount based on the power generation facility capacity and environmental information.

In step S103, the power generation source operating device 140 calculates a power generation unit price based on the predicted power generation amount and the power market price.

In step S104, the power generation source operating device 140 measures the actual amount of power generation for power generation facilities of different types of renewable energy.

In step S105, the power generation source operating device 140 checks whether the difference between the measured power generation and the predicted power generation exceeds the error rate.

In step S106, when the difference between the actual power generation and the predicted power generation exceeds the error rate, the power generation source operating device 140 changes the predicted power generation amount to the actual power generation. Then, the power generation source operating device 140 performs step S103 of recalculating the power generation unit price based on the changed measured amount and the power market price.

In step S107, if the difference between the measured power generation and the predicted power generation amount is less than or equal to the error rate, the power generation source operating device 140 determines a power generation cost based on the predicted power generation amount and the power market price.

3 is a flowchart illustrating a power generation source operation control process in a power generation source operating method according to an embodiment of the present invention.

In step S201, the power generation source operating device 140 predicts a power generation amount by using the power generation facility capacity and environmental information, and determines a power generation unit price through the predicted power generation amount and an actual measurement process.

In step S202, the power generation source operating device 140 checks whether the power generation efficiency is less than the reference efficiency.

In step S203, when the power generation efficiency is less than the reference efficiency, the power generation cost is calculated by reflecting the power generation efficiency in the power generation unit price. For example, the power generation source operating device 140 may calculate a power generation fee by multiplying the power generation cost by the power generation efficiency. Alternatively, the power generation source operating device 140 may calculate a power generation rate by multiplying the power generation cost by the power generation efficiency to which the weight is applied.

In step S204, the power generation source operating device 140 checks whether the power generation fee is less than the customer price.

In step S205, the power generation source operating device 140, if the power generation fee is less than the customer price, communicates with the renewable energy generation source 120 to instruct the generation of new and renewable energy, and transfers the generated renewable energy to the load 130 Can be supplied to the customer.

In step S206, when the power generation rate is equal to or greater than the customer price, the power generation source operating device 140 communicates with the new and renewable energy power generation source 120 to wait for generation of new and renewable energy. Alternatively, the power generation source operating device 140 stores the renewable energy being generated in communication with the renewable energy power generation source 120 in the energy storage device 150.

In step S207, the power generation source operating device 140 waits for a predetermined time set in advance, and performs step S202.

In step S208, when the power generation efficiency is greater than or equal to the reference efficiency, the power generation source operating device 140 checks whether the power generation fee is less than the customer price.

In step S209, the power generation source operating device 140, if the power generation fee is less than the customer price, communicates with the renewable energy generation source 120 to instruct the generation of new and renewable energy, and transfers the generated renewable energy to the load 130 Can be supplied to the customer.

In step S210, when the power generation rate is equal to or greater than the customer price, the power generation source operating device 140 communicates with the renewable energy power generation source 120 to wait for generation of new and renewable energy. Alternatively, the power generation source operating device 140 stores the renewable energy being generated in communication with the renewable energy power generation source 120 in the energy storage device 150.

In step S211, the power generation source operating device 140 waits for a predetermined time set in advance, and performs step S208.

4 is a flowchart illustrating a power storage process in a method of operating a power generation source according to an embodiment of the present invention.

In step S301, the power generation source operating device 140 performs a power generation operation on the heterogeneous renewable energy.

In step S302, the power generation source operating device 140 predicts a power generation amount using power generation facility capacity and environmental information for heterogeneous renewable energy, and calculates a power generation unit price through the predicted power generation amount and an actual measurement process.

In step S303, the power generation source operating device 140 stores the power generated for the heterogeneous renewable energy in the energy storage device 150.

In step S304, the power generation source operating device 140 checks whether the average of the accumulated power generation unit price for the stored power is less than the demand unit price.

In step S305, when the average of the cumulative power generation unit price for the stored power is less than the demand unit price, the power generation source operating device 140 discharges the energy storage device 150 and supplies the discharged power to the customer.

In step S306, the power generation source operating device 140 updates the power generation efficiency when the average of the accumulated power generation unit price for the stored power is equal to or greater than the demand unit price. In addition, the power generation source operating device 140 reflects the updated power generation efficiency in step S302 to recalculate the power generation cost.

On the other hand, with reference to FIGS. 2 to 4, the operation of the power generation source will be described with reference to an example of a power generation source operating scenario in which heterogeneous renewable energy sources are combined.

Power generation source operating device 140 according to an embodiment of the present invention is based on the capacity of each facility installed in the heterogeneous renewable energy generation source and each environmental information corresponding to the obtained heterogeneous renewable energy Predict the amount of power generation. For example, the power generation source operating device 140 may generate a 24-hour power generation forecast amount by predicting each generation amount one day before.

In addition, the power generation source operating device 140 may calculate a total power generation fee (amount) by multiplying the current power market price by the estimated amount of power generation, and divide this by each power generation facility capacity to calculate a power generation cost. For example, the power generation unit price may be calculated as 100 won/kw.

Subsequently, the power generation source operating device 140 actually measures the amount of power generation of different types of renewable energy through a measuring device, and compares it with each predicted value. As a result of the comparison, the power generation source operating device 140 determines the power generation cost if the difference is within an error rate of the measuring instrument. On the contrary, if the error between the predicted power generation forecast amount and the power generation measured amount measured through the measuring instrument is greater than or equal to a preset error rate, the power generation source operating device 140 changes the power generation forecast amount to the power generation measured amount and uses the changed power generation measured amount to generate the unit cost of power generation. Can be recalculated.

And, before generating power at the determined power generation unit, the power generation source operating device 140 may control the amount of power generation by comparing the power generation efficiency of each power generation source (eg, solar or small power) with the reference efficiency. Here, the reference efficiency may be applied differently for each different renewable energy generation source. The standard efficiency for photovoltaic conversion and the standard efficiency for small-scale power generation may be officially issued through a report.

If the actual power generation efficiency is greater than or equal to the reference efficiency, the power generation source operating device 140 regards the power generation cost as a power generation charge. The power generation source operating device 140 compares the power generation rate and the market demand amount, and if the power generation rate is lower than the demand amount, it instructs the power generation, and when the power generation unit price is higher than the demand unit price, it waits for power generation or stores the generated power as an energy storage device 150. Save it to. In this case, the power generation source operating device 140 may discharge the power stored in the energy storage device 150 and supply the power to the customer when the demand rate is higher than the corresponding power generation rate.

On the other hand, before generating power at the determined power generation unit, the power generation source operating device 140 calculates the power generation fee by reflecting the actual power generation efficiency to the power generation unit price (e.g., power generation unit price × power generation efficiency) if the power generation efficiency is less than the standard efficiency. And, it is possible to control the amount of generation by comparing the calculated generation rate and the amount of demand. The power generation source operating device 140 may instruct power generation to the renewable energy power generation source 120 when the power generation fee is less than the demand amount. The power generation source operating device 140 stores the generated power in the energy storage device 150 when the power generation fee is greater than or equal to the demand amount. Thereafter, the stored power is discharged when the demand unit price is higher than the corresponding generation unit price.

Meanwhile, power generation efficiency may be improved while power generation continues in the renewable energy power generation source 120. In this case, when the actual power generation efficiency is equal to or better than the reference efficiency, the power generation source operating device 140 may control the amount of power generation by comparing the average of the power generation unit price and the improved power generation unit price with the demand unit price when the power generation efficiency is not good. . If the demand unit price is higher than the power generation rate, the power generation source operating device 140 may supply stored power when the power generation efficiency is previously low and the power generated when the power generation efficiency is improved. That is, the power generation source operating device 140 may operate the power generation source by considering, along with the demand rate, that the generation rate for the power stored in the energy storage device 150 changes as the power generation efficiency changes over time.

On the other hand, the power generation source operating device 140 may reduce the unit cost of power generation by considering both the integrated power generation fee and the demand rate for a new renewable energy source in which heterogeneous renewable energy generation sources are combined instead of a single power source. To this end, the power generation source operating device 140 obtains each power generation fee for the heterogeneous power generation source in the process of obtaining the power generation unit cost of the heterogeneous renewable energy power generation source, and calculates the calculated generation rate through an integrated power generation process. You can calculate the fee. For example, the power generation source operating device 140 may calculate an average charge value of a power generation charge for each of the different types of renewable energy and compare it with the accommodation charge.

In addition, the power generation source operating device 140 may reduce the power generation cost by considering both the integrated power generation efficiency and the reference efficiency of a new renewable energy source in which different renewable energy power sources are combined instead of a single power source. To this end, the power generation source operating device 140 obtains each power generation efficiency for the heterogeneous power generation source in the process of obtaining the power generation efficiency of the heterogeneous renewable energy power generation source, and converts the obtained power generation efficiency through a conversion process. Can be calculated. For example, the power generation source operating device 140 may calculate an average efficiency value of power generation efficiency for each of the different types of renewable energy and compare it with the reference efficiency. That is, the power generation source operating device 140 may operate the power generation source by applying the integrated efficiency converted into each power generation efficiency as the system efficiency for the entire system in which the heterogeneous renewable energy power generation sources are combined.

5 is a configuration diagram for explaining the configuration of a power generation source operating apparatus in which heterogeneous renewable energy sources are combined according to an embodiment of the present invention.

As shown in FIG. 5, the power generation source operating device 140 in which heterogeneous renewable energy sources are combined according to an embodiment of the present invention includes a communication module 210, a memory 220, and a processor 230. . However, not all of the illustrated components are essential components. The power source operating device 140 may be implemented by more components than the illustrated components, or the power source operating device 140 may be implemented by fewer components than the illustrated components.

Hereinafter, a detailed configuration and operation of each component of the power generation source operating device 140 of FIG. 5 will be described.

The communication module 210 communicates with the renewable energy generation source 120 and receives environmental information corresponding to different types of renewable energy. Alternatively, the communication module 210 communicates with an energy storage device or an external server (e.g., a power server, a weather server, etc.) to receive various information related to heterogeneous renewable energy or to transmit a control command related to heterogeneous renewable energy. can do.

The memory 220 stores at least one program.

The processor 230 is connected to the communication module 210 and the memory 220. The processor 230, by executing at least one program, predicts each generation amount of the heterogeneous renewable energy based on the respective power generation facility capacity for the heterogeneous renewable energy and the respective environmental information corresponding to the heterogeneous renewable energy, Each generation unit price is determined based on the predicted generation amount and each electric power market price, and the generation rate for heterogeneous renewable energy is calculated by using the determined generation unit price and each generation efficiency of the power generation source for different types of renewable energy. And, the operation of the power generation source is controlled by comparing the calculated generation rate and the customer price.

According to various embodiments, the processor 230 may predict each generation amount of different renewable energy by combining at least one environmental information from among dry season information, rainy season information, insolation information, temperature information, and precipitation information.

According to various embodiments, the processor 230 compares the measured amount of power generation for power generation facilities of different types of renewable energy with each predicted amount of power generation, and when it exceeds a preset error rate, the predicted amount of power generation is changed to the measured amount of power generation. The unit price of power generation can be determined.

According to various embodiments, if each generation efficiency is less than a preset reference generation efficiency, the processor 230 calculates a generation rate by reflecting each generation efficiency in each determined generation unit price, and each generation efficiency is equal to or greater than a preset reference generation efficiency. If so, it is possible to calculate the determined power generation unit price as a power generation fee.

According to various embodiments, the processor 230 monitors whether or not the power generation efficiency of at least one power generation source is greater than or equal to a preset reference efficiency among power generation efficiencies of the power generation source for heterogeneous renewable energy after a preset time, and at least one power generation. If the power generation efficiency of the source is equal to or greater than a preset reference efficiency, each determined power generation cost may be calculated as a power generation rate.

According to various embodiments, the processor 230 calculates an average unit price of each determined power generation unit price, and uses the calculated average unit price and each generation efficiency of a power generation source for heterogeneous renewable energy. Generation rates can be calculated.

According to various embodiments, the processor 230 calculates the power generation efficiencies of different power generation sources for heterogeneous renewable energy, and applies the integrated efficiency obtained by integrating the calculated power generation efficiencies as the system efficiency for the heterogeneous power sources. Generation rates for renewable energy can be calculated.

According to various embodiments, the processor 230 may instruct power generation when the calculated generation rate is less than the customer price and supply the generated power to the customer.

According to various embodiments, the processor 230 may wait for generation of heterogeneous renewable energy or store the generated power in the energy storage device 150 if the calculated generation charge is equal to or greater than the customer price.

The method for operating a power generation source in which heterogeneous renewable energy sources are combined according to the embodiments of the present invention described above may be implemented as a computer-readable code on a computer-readable recording medium. The method of operating a power generation source combined with different renewable energy sources according to embodiments of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable recording medium.

A non-transitory computer-readable storage medium comprising at least one program executable by a processor, wherein the at least one program, when executed by the processor, causes the processor: a processor to be connected with a communication module and a memory. The processor, by executing at least one program, predicts each generation amount of the different renewable energy based on the capacity of each power generation facility for the different renewable energy and the respective environmental information corresponding to the different renewable energy, and predicts each Each generation unit price is determined based on the amount of generation and the price of each electric power market, and the generation rate for heterogeneous renewable energy is calculated and calculated by using the determined generation unit price and each generation efficiency of the generation source for different types of renewable energy. A non-transitory computer-readable storage medium may be provided that includes instructions for controlling the operation of the power generation source by comparing the generated power generation rate and the customer price.

The method according to the present invention described above can be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all types of recording media in which data that can be decoded by a computer system is stored. For example, there may be read only memory (ROM), random access memory (RAM), magnetic tape, magnetic disk, flash memory, optical data storage device, and the like. In addition, the computer-readable recording medium can be distributed in a computer system connected through a computer communication network, and stored and executed as codes that can be read in a distributed manner.

Although the above has been described with reference to the drawings and examples, it does not mean that the scope of protection of the present invention is limited by the drawings or examples, and those skilled in the art It will be appreciated that various modifications and changes can be made to the present invention without departing from the spirit and scope.

Specifically, the described features may be implemented in digital electronic circuitry, or computer hardware, firmware, or combinations thereof. Features may be executed in a computer program product implemented in storage in a machine-readable storage device, for example, for execution by a programmable processor. And the features can be performed by a programmable processor executing a program of directives to perform the functions of the described embodiments by operating on input data and generating output. The described features include at least one programmable processor, at least one input device, and at least one output coupled to receive data and directives from the data storage system and to transmit data and directives to the data storage system. It can be executed within one or more computer programs that can be executed on a programmable system including the device. A computer program includes a set of directives that can be used directly or indirectly within a computer to perform a specific action on a given result. Computer programs are written in any form of programming language, including compiled or interpreted languages, and included as modules, elements, subroutines, or other units suitable for use in other computer environments, or as independently operable programs. It can be used in any form.

Suitable processors for execution of a program of directives include, for example, both general and special purpose microprocessors, and either a single processor or multiple processors of a different kind of computer. Storage devices suitable for implementing computer program directives and data that also implement the described features are, for example, semiconductor memory devices such as EPROM, EEPROM, and flash memory devices, magnetic devices such as internal hard disks and removable disks. Devices, magneto-optical disks and all types of non-volatile memory including CD-ROM and DVD-ROM disks. The processor and memory may be integrated within application-specific integrated circuits (ASICs) or added by ASICs.

The present invention described above is described on the basis of a series of functional blocks, but is not limited by the above-described embodiments and the accompanying drawings, and various substitutions, modifications and changes within the scope not departing from the technical spirit of the present invention It will be apparent to those of ordinary skill in the art to which this invention pertains.

Combinations of the above-described embodiments are not limited to the above-described embodiments, and combinations of various types as well as the above-described embodiments may be provided according to implementation and/or need.

In the above-described embodiments, the methods are described on the basis of a flow chart as a series of steps or blocks, but the present invention is not limited to the order of steps, and certain steps may occur in a different order or concurrently with other steps as described above. I can. In addition, those of ordinary skill in the art understand that the steps shown in the flowchart are not exclusive, other steps are included, or one or more steps in the flowchart may be deleted without affecting the scope of the present invention. You can understand.

The above-described embodiments include examples of various aspects. It is not possible to describe all possible combinations for representing the various aspects, but one of ordinary skill in the art will recognize that other combinations are possible. Accordingly, the present invention will be said to include all other replacements, modifications and changes falling within the scope of the following claims.

100: Renewable Energy Management System
110: grid power
120: Renewable energy generation source
121: solar power source
122: Small Hydro Power Plant
123: wind power source
130: load
140: power plant operating device
150: energy storage device

Claims (18)

Predicting a power generation amount of the heterogeneous renewable energy based on each power generation facility capacity for the heterogeneous renewable energy and environmental information corresponding to the heterogeneous renewable energy;
Determining a power generation unit price based on the estimated power generation amount and each power market price;
Calculating a power generation fee for the heterogeneous renewable energy by using the determined power generation unit price and each generation efficiency of a power generation source for the different renewable energy; And
Comprising the step of controlling the operation of the power generation source by comparing the calculated generation rate and the customer price,
The step of calculating the power generation fee includes calculating an average unit price of each of the determined power generation unit prices, and using the calculated average unit price and each generation efficiency of a power generation source for heterogeneous renewable energy to generate power for heterogeneous renewable energy. Calculate the rate,
Calculate the power generation efficiency of each of the heterogeneous power generation sources for the heterogeneous renewable energy, and apply the integrated efficiency integrating the calculated power generation efficiency as the system efficiency for the heterogeneous power generation source to calculate the generation rate for the heterogeneous renewable energy. How to operate a power generation source combined with different renewable energy sources. The method of claim 1,
Predicting each generation amount of the heterogeneous renewable energy,
A power generation source combined with heterogeneous renewable energy sources that predicts the power generation of different types of renewable energy by combining seasonal information, dry season information, rainy season information, insolation information, temperature information, precipitation information, air volume information, and at least one environmental information Operating method. The method of claim 1,
The step of determining each power generation unit price,
When a predetermined error rate is exceeded by comparing the measured amount of power generation for the power generation facility of the heterogeneous renewable energy with the estimated amount of power generation, the estimated amount of power generation is changed to the measured amount of power generation to determine a power generation cost. A method of operating a power plant combined with renewable energy sources. The method of claim 1,
The step of calculating the generation rate,
If each of the power generation efficiencies is less than a preset reference power generation efficiency, a power generation rate is calculated by reflecting each power generation efficiency in the respective determined power generation unit prices, and when the respective power generation efficiency is greater than or equal to a preset reference power generation efficiency, the respective determined power generation costs are calculated. A method of operating a power generation source in which different renewable energy sources are combined, calculated as a power generation fee. The method of claim 1,
Further comprising the step of monitoring whether the power generation efficiency of at least one power generation source is greater than or equal to a preset reference efficiency among power generation efficiencies of power generation sources for different types of renewable energy after a preset time,
The step of calculating the power generation rate comprises: if the power generation efficiency of at least one power generation source is greater than or equal to a preset reference efficiency, each determined power generation unit price is calculated as a power generation rate, and a power generation source operating method in which heterogeneous renewable energy sources are combined . delete delete delete delete A communication module that communicates with a renewable energy generation source and receives environmental information corresponding to different types of renewable energy;
A memory for storing at least one program; And
And a processor connected to the communication module and the memory,
The processor, by executing the at least one program,
Each power generation facility capacity for the heterogeneous renewable energy and the respective environmental information corresponding to the heterogeneous renewable energy are used to predict the generation amount of the heterogeneous renewable energy, respectively,
Each of the power generation costs is determined based on the predicted power generation amount and each power market price,
Calculate a power generation fee for heterogeneous renewable energy using the determined power generation unit price and each power generation efficiency of the power generation source for the different renewable energy,
Calculate the average unit price of each of the determined power generation unit prices, and calculate the generation rate for the heterogeneous renewable energy by using the calculated average unit price and each generation efficiency of the power generation source for the heterogeneous renewable energy,
Calculate the power generation efficiency of each of the heterogeneous power generation sources for the heterogeneous renewable energy, and apply the integrated efficiency integrating the calculated power generation efficiency as the system efficiency for the heterogeneous power generation source to calculate the generation rate for the heterogeneous renewable energy. and,
A power generation source operating device combined with a heterogeneous renewable energy source for controlling the operation of the power generation source by comparing the calculated power generation rate and the customer price. The method of claim 10,
The processor,
A power generation source operating device combined with a heterogeneous renewable energy source for predicting each generation amount of heterogeneous renewable energy by combining at least one environmental information from among dry season information, rainy season information, insolation information, temperature information, and precipitation information. The method of claim 10,
The processor,
When a predetermined error rate is exceeded by comparing the measured amount of power generation for the power generation facility of the heterogeneous renewable energy with the estimated amount of power generation, the estimated amount of power generation is changed to the measured amount of power generation to determine a power generation cost. Power generation source operating device combined with renewable energy sources. The method of claim 10,
The processor,
If each of the power generation efficiencies is less than a preset reference power generation efficiency, a power generation rate is calculated by reflecting each power generation efficiency in the respective determined power generation unit prices, and when the respective power generation efficiency is greater than or equal to a preset reference power generation efficiency, the respective determined power generation costs are calculated. A power generation source operating device in which heterogeneous renewable energy sources are combined, calculated as power generation rates. The method of claim 10,
The processor,
After a preset time, it is monitored whether the power generation efficiency of at least one of the power generation efficiencies of the power generation sources for different types of renewable energy is greater than or equal to the preset reference efficiency, and if the power generation efficiency of the at least one power source is greater than or equal to the preset reference efficiency, , A power generation source operating device in which heterogeneous renewable energy sources are combined to calculate the respective determined power generation unit prices as power generation rates. delete delete delete delete

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