Energy user group management system using microgrid distributed resource

Abstract

The present invention relates to an energy user group management system using microgrid distributed resources. The energy user group management system according to the present invention comprises: a data collection unit for collecting an energy use pattern for each energy source of a corresponding factory according to each of a plurality of factories in a microgrid; a user group management unit for analyzing a representative energy source with a high use occupancy rate for each factory on the basis of the energy use pattern, and classifying each factory into a plurality of user groups by type of representative energy source; and an energy transaction management unit for proposing, when an energy transaction request is received from the factory, a transaction for one energy source selected from a plurality of energy sources including steam, gas and electricity produced in waste resource recycling energy generation equipment in the microgrid, in consideration of at least one from among a user group to which a factory belongs, a purchase request amount for each energy source, and an external transaction unit price for each energy source

Description

Energy User Group Management System Using Microgrid Distributed Resources

[0001] The present invention relates to an energy user group management system using microgrid distributed resources, and more specifically, to an energy user group management system using microgrid distributed resources capable of managing user groups by energy type based on distributed resources within a microgrid.

[0002] Microgrids are similar to smart grids in that they integrate information technology into the power grid to control power generation and incorporate generation / consumption forecasting capabilities. However, their scale is smaller, primarily applied to industrial complexes and small villages. Furthermore, microgrids have the advantage of eliminating the need for large-scale transmission facilities because the distance between power sources and users is relatively short.

[0003] Distributed resources used to operate microgrids include waste-to-energy recycling power generation facilities, solar power, and energy storage systems (ESS). These distributed resources are connected to an energy network via microgrid operation platforms, enabling the exchange of power.

[0004] Each factory within the microgrid is equipped with distributed resources, such as solar power or an energy storage system (ESS). These distributed resources can be utilized by each factory to mitigate energy fluctuations. Solar power stores and generates electricity through solar panels during daylight hours. ESS can be charged using electricity generated by solar power or supplied from external sources.

[0005] ESS can be operated as an energy production method that utilizes the difference in electricity rates. As a simple example, it can have a structure in which electricity is charged during low-load hours when electricity rates are low, and the stored electric energy is discharged to demand sources to generate profits during high-load hours when electricity rates are high.

[0006] Waste resource recycling energy generation facilities can produce biogas using waste resources such as sewage, sewage sludge, food waste, and dye residue, and use the produced biogas as an energy source to produce steam, gas, and electricity.

[0007] Steam, gas, and electricity produced at waste-to-energy power plants can be traded and supplied to various energy-demanding recipients. This includes not only grid power providers like KEPCO but also individual factories within microgrids.

[0008] However, since the energy demand pattern is different for each user, a system is required that can efficiently supply and trade energy to each demander by taking into account the demand pattern of each user.

[0009] The technology underlying the present invention is disclosed in Korean Patent Publication No. 10-2023-0020206 (published on February 10, 2023).

[0010] The purpose of the present invention is to provide an energy user group management system using microgrid distributed resources, which analyzes the energy usage pattern of each factory within a microgrid, classifies user groups by energy source with a high market share, and proposes energy transaction consulting based on the energy usage pattern.

[0011] The present invention relates to an energy user group management system using distributed resources of a microgrid, comprising: a data collection unit for collecting energy usage patterns by energy source for each of a plurality of factories within a microgrid; a user group management unit for analyzing a representative energy source with a high usage share for each factory based on the energy usage patterns and classifying each factory into a plurality of user groups by type of the representative energy source; and an energy transaction management unit for proposing to trade one energy source selected from a plurality of energy sources including steam, gas, and electricity produced by a waste resource recycling energy generation facility within a microgrid, taking into consideration at least one of a user group to which the factory belongs, a purchase request amount by energy source of the factory, and an external transaction unit price by energy source when an energy transaction request is received from the factory.

[0012] In addition, when receiving an energy transaction request from the factory, the energy transaction management unit may provide consulting suggestions to use only representative energy sources mapped to the user group to which the factory belongs for energy transactions, and may also provide data on the status of usage share by energy source for the factory.

[0013] In addition, the energy transaction management unit, when receiving an energy transaction request from the factory, may provide consulting suggestions to use the energy source with the highest current external transaction price among the plurality of energy sources for energy transactions, and may also provide current external transaction price data for similar energy for each energy source.

[0014] In addition, the energy transaction management unit may, based on the ratio of the purchase request amount by energy source of the plant divided by the total purchase request amount, make a consulting proposal to use only the first-priority energy source for energy transactions, regardless of the external transaction unit price, if the ratio of the highest first-priority energy source is n times or more (where n is a positive integer greater than 1) greater than the ratio of the second-priority energy source.

[0015] In addition, if the ratio of the highest first-priority energy source is less than n times the ratio of the second-priority energy source, the energy transaction management unit may compare the external transaction unit prices of the first-priority energy source and the second-priority energy source and make a consulting proposal to use the energy source with the higher external transaction unit price for energy transactions.

[0016] In addition, if the ratio of the highest first-priority energy source is less than n times the ratio of the second-priority energy source, the energy transaction management unit may compare the product of the purchase request amount of the first-priority energy source and the external transaction unit price of the energy source with the product of the purchase request amount of the second-priority energy source and the external transaction unit price of the energy source, and may make a consulting proposal to use the energy source with the higher value for energy transactions.

[0017] Additionally, the energy usage pattern by energy source for the above factory may include the cumulative usage amount by energy source consumed by the factory over a past set period.

[0018] In addition, the energy user group management system may further include a control unit that establishes a power generation plan for each energy source of the power generation facility based on the energy usage patterns of the plurality of factories.

[0019] In addition, the control unit can control the power generation facility to perform power generation in the order of energy sources with the highest total usage amount, taking into account the total usage amount of each energy source for the entire factory analyzed using energy usage patterns of multiple factories.

[0020] In addition, the control unit may control the power generation facility so that, when the maximum purchase request total among the total purchase requests for each energy source of the entire factory, converted based on the purchase request total for each energy source of each factory, is greater than the predicted power generation amount of the power generation facility, only the energy source corresponding to the maximum purchase request total among the plurality of energy sources generates power.

[0021] In addition, the control unit can plan the power generation amount for each energy source by distributing the predicted power generation amount of the power generation facility in an amount corresponding to the usage ratio for each energy source using the result of calculating the usage ratio for each energy source, which is calculated by dividing the total purchase request amount for each energy source of the entire plant by the total purchase request amount for the entire energy source.

[0022] In addition, the data collection unit can further collect the purchase request amount for each energy source of each factory and the predicted power generation amount of the power generation facility.

[0023] According to the present invention, by analyzing the energy usage pattern of each energy source of each factory in a microgrid, it is possible to classify user groups by energy source with a high market share, and propose that energy sources with high energy usage be used for energy transactions.

[0024] In addition, the present invention can more efficiently control the power generation amount of each energy source, including gas, electricity, and steam generated in a recycled energy power generation facility, by considering the total amount of energy source usage of the entire factory within the microgrid.

[0025] In addition, according to the present invention, energy including gas, steam, and electricity produced in a recycling energy power generation facility can be supplied to each factory requiring energy within a microgrid at a lower price than the market price, thereby increasing the recycling rate of waste resources and promoting the circular use of waste resources with high utilization value.

[0026] FIG. 1 is a diagram exemplarily showing a microgrid distributed resource for an embodiment of the present invention.

[0027] FIG. 2 is a drawing illustrating an energy user group management system using microgrid distributed resources according to an embodiment of the present invention.

[0028] Figure 3 is a drawing showing in detail the configuration of the energy user group management system of Figure 2.

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily practice the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In addition, in the drawings, parts irrelevant to the description have been omitted to clearly explain the present invention, and similar parts have been designated with similar reference numerals throughout the specification.

[0030] Throughout the specification, when a part is said to be "connected" to another part, this includes not only the cases where the parts are "directly connected" but also the cases where the parts are "electrically connected" with other elements intervening. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather includes other components, unless otherwise stated.

[0031] The present invention relates to an energy user group management system utilizing distributed microgrid resources. The system analyzes the energy usage patterns of each factory within the microgrid, classifies user groups by energy source with a high market share, and proposes energy transaction consulting based on these energy usage patterns. Furthermore, the present invention efficiently controls the power generation of each energy source generated by a power generation facility by considering the total energy usage of each energy source.

[0032] FIG. 1 is a diagram exemplarily showing a microgrid distributed resource for an embodiment of the present invention.

[0033] As illustrated in Figure 1, various distributed resources exist within the microgrid (1), such as a waste resource recycling energy generation facility (10), solar power, and an energy storage system (ESS). These distributed resources can be connected to an energy network through the proposed management platform, allowing them to exchange power with each other.

[0034] In Fig. 1, the waste resource recycling energy generation facility (10) can produce recycled energy such as electricity, gas, and steam by using waste resources (e.g., livestock manure, food waste, dye sludge, by-products, etc.).

[0035] At this time, waste resources may include waste such as by-products, residues, waste, and food waste discharged from each factory (20) existing within the microgrid, as well as waste such as manure and various sludge discharged from external facilities (e.g., livestock facilities, waste treatment plants, etc.).

[0036] A waste resource recycling energy generation facility (10) can produce biogas by utilizing such waste resources, and can produce energy such as steam, gas, and electricity using the produced biogas as an energy source.

[0037] The waste resource recycling energy generation facility (10) has the advantage of being able to reduce energy resource costs by not directly inputting natural resources such as coal, thereby lowering the energy supply unit price and supplying energy to the user (factory) at a cheaper price.

[0038] These waste resource recycling energy generation facilities (10) can trade and supply the energy they produce to multiple factories (20) within the microgrid.

[0039] Here, each factory (20) can operate various facilities by utilizing energy provided from external combined heat and power plants (CHP) (2) as well as self-produced distributed resources such as ESS and solar power, and can purchase energy produced from traded waste resource recycling energy generation facilities (10) at a lower unit price than CHP energy and utilize it for facility operation.

[0040] Such distributed resources (waste resource recycling energy generation facilities, solar power, energy storage devices) can be structured to use the energy within a specific range (industrial complex, specific small complex) where a microgrid (1) is built, but consumers within the range where the microgrid (1) is built can also receive external energy support.

[0041] In addition, in the case of waste resource recycling energy generation facilities (10) among distributed resources, the energy sales standard unit price is determined by considering the supply and demand status of waste resources, the cost of chemicals for producing biogas, the general unit price of the type of energy being generated, etc., but may be set lower than the general unit price of the type of energy, i.e., the external transaction unit price.

[0042] Here, when determining the unit price of sale, the unit price during peak load hours can be set lower than the unit price during off-peak load hours, thereby structurally supporting the reduction of energy costs incurred during peak load hours when purchasing energy through the power generation facility.

[0043] In addition, among distributed resources, for solar power and ESS, the standard unit price is set based on the transaction cost of new and renewable energy between Korea Electric Power Corporation (KEPCO) and the Korea Power Exchange (KPX), but is set higher than the cost of electricity according to the load time zone and lower than the transaction cost of KEPCO, so that the factory or management entity that owns the distributed resource can make a profit when selling the distributed resource.

[0044] The energy user group management system (100) according to an embodiment of the present invention is network-connected to each component within a microgrid, and can collect, monitor, and analyze information, and control and manage energy supply and demand, transactions, etc. The energy user group management system (100) can be located inside or outside the microgrid, and can exchange various types of information by being network-connected through management terminals belonging to each of the power generation facilities (10) and the factory (20).

[0045] FIG. 2 is a diagram illustrating an energy user group management system utilizing microgrid distributed resources according to an embodiment of the present invention. As shown in FIG. 2, the energy user group management system (100) can be network-connected to a first management terminal (200) on the power generation facility (10) side and a second management terminal (300) on the factory side, respectively.

[0046] In an embodiment of the present invention, the energy user group management system (100) collects energy usage patterns by energy source for each of multiple factories (20) within a microgrid, and based on this, classifies user groups by energy source with a high market share, and can propose energy transaction consulting based on the energy usage patterns.

[0047] In this way, the energy user group management system (100) can check the usage share of each energy source in each factory from the consumption patterns of each energy source collected for each factory, classify and manage each factory into multiple energy user groups based on the type of energy source with the highest usage share, and suggest optimal energy consulting for each user group.

[0048] In addition, the energy user group management system (100) can establish a power generation plan for each energy source of the power generation facility (10) based on energy usage patterns collected from multiple factories.

[0049] The energy user group management system (100) can continuously collect and update energy usage patterns for each factory, and provides detailed results of energy consumption pattern analysis to the factory's second management terminal (300), enabling the system to be utilized for user energy management. Accordingly, users can identify energy saving factors through energy pattern analysis information, or, when participating in energy transactions, request the purchase of energy sources with high energy unit prices or ratios, thereby reducing related energy costs.

[0050] In addition, the energy user group management system (100) can collect the purchase request amount for each energy source of each factory and the predicted power generation amount of the power generation facility (10). The energy user group management system (100) can receive the predicted power generation amount expected for a future transaction time (e.g., the next day, a week, a month) from the power generation facility (10) from the present and receive the purchase request amount desired to be purchased at the corresponding transaction time from each factory (20).

[0051] The user group management system (100) can determine the power generation amount for each energy source of the power generation facility (10) based on information collected from the power generation facility (10) and multiple factories (20).

[0052] The energy user group management system (100) can collect the predicted power generation amount for the next day, week, and month from the power generation facility (10) through a network-connected first management terminal (200) and provide it to multiple second management terminals (300) on each network-connected factory side.

[0053] In an embodiment of the present invention, the energy user group management system (100) can collect related data by communicating with a first management terminal (200) on the power generation facility (10) side and a plurality of second management terminals (300) on the plant (20) side, and can transmit, receive, and exchange various types of information with them.

[0054] The energy user group management system (100) can provide an online platform accessible and usable by the first management terminal (200) and the second management terminal (300). This platform can be provided based on a web or app environment. Here, the network can include a wired, wireless, or a hybrid wired / wireless network.

[0055] FIG. 3 is a detailed diagram illustrating the configuration of the energy user group management system of FIG. 2. As illustrated in FIG. 3, the energy user group management system (l00) according to an embodiment of the present invention includes a data collection unit (110), a user group management unit (120), and an energy transaction management unit (130), and may further include a control unit (140) and a communication unit (150). Here, the operation of each unit (110, 120, 130, 150) and the data flow between each unit may be controlled by the control unit (140).

[0056] The data collection unit (110) collects energy usage patterns (demand patterns) by energy source for each of the multiple factories (20) within the microgrid. Here, the energy sources may include steam, gas, and electricity produced by the power generation facility (10). In addition, the energy usage patterns by energy source may include the cumulative amount of energy consumed by each energy source during a set period at the factory.

[0057] In addition, the data collection unit (110) can additionally collect the purchase request amount for each energy source of each factory (20) and the predicted power generation amount of the power generation facility (10).

[0058] The data collection unit (110) can collect the relevant information by communicating with the first management terminal (200) on the power generation facility side and the second management terminal (300) on each factory side using the communication unit (150). Of course, for this purpose, the communication unit (150) can be connected to the power generation facility (10) and multiple factories (20) through a network and communicate with them.

[0059] The user group management unit (120) receives energy usage patterns for each factory (20) from the data collection unit (110). Based on the collected energy usage patterns, the user group management unit (120) analyzes representative energy sources with high usage shares for each factory (20) and classifies each factory into multiple user groups based on the type of the analyzed representative energy source.

[0060] If, as a result of analyzing the energy usage pattern of each factory, the energy source with the highest usage among the energy sources is gas, it can be classified into the first user group, if it is steam, it can be classified into the second user group, and if it is electricity, it can be classified into the third user group.

[0061] The energy transaction management unit (130) can receive energy transaction requests from each factory (20) within the microgrid by communicating with the second management terminal (300) on the side of each factory (20) using the communication unit (150).

[0062] When receiving an energy transaction request from a factory (20), the energy transaction management unit (130) may make a consulting proposal to trade one energy source selected from among multiple energy sources including steam, gas, and electricity produced by a power generation facility (10) within a microgrid, taking into consideration at least one of the user group to which the factory belongs, the purchase request amount for each energy source of the factory, and the external transaction unit price for each energy source.

[0063] As one example, when receiving an energy transaction request from a factory, the energy transaction management unit (130) may provide consulting suggestions to ensure that only representative energy sources mapped to the user group to which the factory belongs are used for energy transactions. In this case, the energy transaction management unit (130) may also provide data on the usage share of each energy source for the factory as reference material.

[0064] If, as a result of analyzing the consumption pattern by energy source during the set period for Factory A, the usage share of gas / steam / electricity was analyzed to be 50:30:20 compared to the total 100%, Factory A can be classified and managed as the first user group with the highest gas usage share.

[0065] When receiving an energy transaction request from factory A belonging to the first user group, the energy user group management system (100) can make an energy transaction consulting proposal to factory A to use only gas, which is a representative energy source mapped to the first user group among multiple energy sources (steam, gas, and electricity), for energy transactions.

[0066] Here, of course, if Factory A consents (approves) to the consulting proposal, only gas energy sources can be traded and supplied. If the requestor also wishes to trade steam or electricity, all requested energy sources can be traded and supplied. Depending on the circumstances, the trade proposal can be rejected. This behavior can be applied equally to other embodiments below.

[0067] The above example is about an energy transaction consulting proposal that takes into account the user group to which each factory belongs. In addition, as in the example described below, energy transaction consulting can also be proposed by considering the purchase request amount for each energy source of each factory and the external transaction unit price for each energy source.

[0068] In another embodiment, when receiving an energy transaction request from a factory, the energy transaction management unit (130) may make a consulting proposal to use the energy source with the highest current external transaction price among multiple energy sources for energy transactions.

[0069] At this time, the energy transaction management unit (130) can provide current external transaction price data for similar energy sources for each energy source as reference. For example, actual external transaction prices for gas, steam, and electricity energy sources can be provided as comparative data. The external transaction price may refer to the typical transaction price, average transaction price, or lowest price for similar energy sources supplied by other energy generation plants outside the microgrid.

[0070] For example, when receiving an energy transaction from factory A, the current external transaction unit price of each energy source can be confirmed, and then, among the multiple energy sources produced by the waste resource recycling energy generation facility (10), a consulting proposal can be made to factory A to use the energy source with the highest actual external transaction unit price for the energy transaction. At this time, when using the energy source, the cost savings compared to other energy sources can be presented together, allowing the user to confirm the cost savings.

[0071] Energy sources produced by waste-to-energy recycling power generation facilities are generally priced lower than external transaction prices. Utilizing these sources can reduce facility operating costs within the plant. This advantage can be leveraged to encourage the procurement of energy sources with the highest external transaction prices from lower-cost waste-to-energy recycling power generation facilities (10), thereby providing consumers with a compensation benefit.

[0072] In this way, when only high-cost energy sources are used for generation or trading, transactions can be made only with consumer groups with a high proportion of these energy sources, maximizing energy cost savings for the plants using the linked energy sources. This is possible because the energy generation facility (10) utilizes recycled resources, thus avoiding direct input of natural resources like coal, thereby reducing energy resource costs.

[0073] In another embodiment, the energy transaction management unit (130) may make a consulting proposal to use only the first-priority energy source for energy transactions, regardless of the external transaction unit price, if the ratio of the highest first-priority energy source is n times or more (n is a positive integer greater than 1) greater than the ratio of the second-priority energy source, based on the ratio of the purchase request amount for each energy source of the factory divided by the total purchase request amount.

[0074] For example, it is assumed that the ratio of the purchase request by energy source for factory A to the total purchase request is 50%:30%:20% (gas:steam:electricity), and n is set to 1.5.

[0075] Here, since the ratio of the highest 1st priority energy source (gas) is '50%' which is more than 1.5 times the ratio of the 2nd priority energy source (steam) '30%', the energy transaction management department (130) can make a consulting proposal to use only the 1st priority energy source for energy transactions regardless of the external transaction unit price. In other words, when the purchase request amount by energy source is calculated as a ratio, if the request amount of the 1st priority energy source is significantly higher than the request amount of the 2nd priority energy source by n times or more, it is possible to propose to factory A to use only gas, which is the 1st priority energy source, for energy transactions.

[0076] However, if the ratio of the first-priority energy source is less than n times the ratio of the second-priority energy source, the energy transaction management unit (130) may compare the external transaction unit prices of the first-priority energy source and the second-priority energy source and make a consulting suggestion to use the energy source with the higher external transaction unit price for energy transactions.

[0077] For example, let's assume that the ratio of the purchase request quantity by energy source for factory A to the total purchase request quantity is 40%:35:25% (gas:steam:electricity). In this case, since the ratio of the first-priority energy source is less than 1.5 times that of the second-priority energy source, the energy transaction management unit (130) compares the external transaction unit prices of the first-priority energy source (gas) and the second-priority energy source (steam), and if steam is more expensive than the gas energy source, it can make a consulting proposal to use the steam energy source for energy transactions. In this way, if the purchase request proportions of the first-priority and second-priority energy sources do not show a significant difference of n times or more, it can make a consulting proposal to purchase the energy source with the higher external transaction unit price.

[0078] Here, in the case where the ratio of the first-priority energy source is less than n times the ratio of the second-priority energy source, the energy transaction management unit (130) can compare the product of the purchase request amount of the first-priority energy source and the external transaction unit price of the energy source with the product of the purchase request amount of the second-priority energy source and the external transaction unit price of the energy source, and make a consulting proposal to use the energy source with the higher value for energy transactions.

[0079] According to this embodiment of the present invention, it is possible to propose that the energy source with the highest usage rate in the factory be used for trading by considering the consumption pattern of the factory, or it is possible to propose that the energy source with the highest external transaction price of energy be used for trading.

[0080] That is, in the case of the present invention, even if the actual energy usage ratio is low, it is possible to suggest at the start of a transaction that energy sources with high external transaction prices should be given priority for participation in the transaction, and a consulting transaction method can be presented that allows the user to save costs by showing the cost savings compared to other energy sources.

[0081] In addition, in an embodiment of the present invention, the control unit (140) can establish a power generation plan for each energy source of the power generation facility (10) based on multiple energy usage patterns for each factory collected through the data collection unit (110).

[0082] Specifically, the control unit (140) can control the power generation facility (10) to perform power generation in the order of energy source with the highest total usage amount by considering the total usage amount of each energy source for the entire factory analyzed using the energy usage patterns of multiple factories.

[0083] For example, if the energy usage patterns collected from each factory, i.e. the usage by energy source, are added up for all N factories, the total usage by energy source for the entire factory can be converted. At this time, if the energy sources are sorted in descending order of the total usage and it is confirmed that they are gas, steam, and electricity in that order, the power generation facility (10) can be configured to generate power in the order of gas, steam, and electricity.

[0084] In addition, the control unit (140) can control the power generation facility (10) to generate power only from the energy source corresponding to the maximum purchase request total among the multiple energy sources when the maximum purchase request total among the total purchase requests of the entire factory converted based on the purchase request amount for each energy source of each factory is greater than the predicted power generation amount of the power generation facility (10).

[0085] As a simple example, if the purchase request amount collected from each of N factories is added up by energy source (steam, gas, electricity), and the total purchase request amount for steam is the highest among the multiple energy sources, and the total purchase request amount for steam corresponding to the maximum is greater than the predicted generation amount of the current power generation facility (10), the control unit (140) can control the power generation facility (10) to generate power only from the steam energy source. In this way, if the control unit (140) adds up the purchase request amounts for each factory by energy source and compares them, and the maximum total purchase request amount is higher than the predicted generation amount of the actual power generation facility (10), the control unit (140) can plan to generate power only from the corresponding energy source with the maximum value.

[0086] In addition, the control unit (140) can plan the power generation amount for each energy source by distributing the predicted power generation amount of the power generation facility (10) in an amount corresponding to the usage ratio for each energy source by using the result of calculating the usage ratio for each energy source by dividing the total purchase request amount for each energy source of the entire plant by the total purchase request amount for the entire energy source.

[0087] If the purchase request amount collected from each factory is added up by energy source (steam, gas, electricity) and then divided by the total energy purchase request amount, the usage ratio of each energy source can be calculated. If the converted ratio for each energy source (gas:steam:electricity) is 50:35:15, the predicted power generation of the power generation facility (10) can be divided by the ratio of 50:35:15 to plan the power generation amount for each energy source. For example, if the predicted power generation amount is 1000, the gas, steam, and electricity power generation amounts can be planned as 500, 300, and 150 according to the ratio.

[0088] According to the present invention as described above, by analyzing the energy usage pattern of each energy source of each factory in the microgrid, it is possible to classify user groups by energy source with a high market share, and propose that energy sources with high energy usage be used for energy transactions.

[0089] In addition, the present invention can more efficiently control the power generation amount of each energy source, including gas, electricity, and steam generated in a recycled energy power generation facility, by considering the total amount of energy source usage of the entire factory within the microgrid.

[0090] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. In an energy user group management system using microgrid distributed resources, A data collection unit that collects energy usage patterns by energy source for each factory within a microgrid; A user group management unit that analyzes representative energy sources with high usage share by factory based on the above energy usage pattern and classifies each factory into multiple user groups by type of the representative energy source; and An energy user group management system including an energy transaction management unit that proposes to trade one energy source selected from among a plurality of energy sources, including steam, gas, and electricity produced from a waste resource recycling energy generation facility in a microgrid, by considering at least one of a user group to which the factory belongs, a purchase request amount by energy source of the factory, and an external transaction unit price by energy source when receiving an energy transaction request from the above factory.

2. In claim 1, The above energy trading management department, An energy user group management system that, when receiving an energy transaction request from the above factory, provides consulting suggestions to use only the representative energy source mapped to the user group to which the factory belongs for energy transactions, and also provides data on the status of usage share by energy source for the above factory.

3. In claim 1, The above energy trading management department, An energy user group management system that, when receiving an energy transaction request from the above factory, provides consulting suggestions to use the energy source with the highest current external transaction price among the multiple energy sources for energy transactions, and also provides current external transaction price data for similar energy for each energy source.

4. In claim 1, The above energy trading management department, An energy user group management system that makes a consulting proposal to use only the first-priority energy source for energy transactions, regardless of the external transaction unit price, if the ratio of the purchase request amount by energy source of the above-mentioned factory divided by the total purchase request amount is n times or more (where n is a positive integer greater than 1) higher than the ratio of the second-priority energy source.

5. In claim 1, The above energy trading management department, An energy user group management system that compares the external transaction price of the first-priority energy source and the second-priority energy source and makes a consulting proposal to use the energy source with the higher external transaction price for energy transactions when the ratio of the highest first-priority energy source is less than n times that of the second-priority energy source.

6. In claim 1, The above energy trading management department, An energy user group management system that compares the product of the purchase request amount of the first-priority energy source and the external transaction unit price of the energy source when the ratio of the highest first-priority energy source is less than n times the ratio of the second-priority energy source, with the product of the purchase request amount of the second-priority energy source and the external transaction unit price of the energy source, and makes a consulting proposal to use the energy source with the higher value for energy transactions.

7. In claim 1, The energy usage pattern by energy source for the above factory is: Energy user group management system that includes the cumulative usage of each energy source consumed over a set period of time in the past at the plant.

8. In claim 1, An energy user group management system further comprising a control unit that establishes a power generation plan for each energy source of the power generation facility based on the energy usage patterns of the plurality of factories.

9. In claim 8, The above control unit, An energy user group management system that controls power generation facilities to perform power generation in order of energy sources with the highest total usage amount, considering the total usage amount of each energy source for the entire factory analyzed using energy usage patterns of multiple factories.

10. In claim 8, The above control unit, An energy user group management system that controls the power generation facility so that only the energy source corresponding to the maximum purchase request total among the multiple energy sources generates power when the maximum purchase request total among the total purchase requests of the entire factory converted based on the purchase request amount by energy source of each factory is greater than the predicted power generation amount of the power generation facility.

11. In claim 8, The above control unit, An energy user group management system that calculates the usage ratio by energy source by dividing the total purchase request amount by energy source of the entire plant by the total purchase request amount of the entire plant, and distributes the predicted power generation amount of the power generation facility in an amount corresponding to the usage ratio by energy source to plan the power generation amount by each energy source.

12. In claim 1, The above data collection unit, An energy user group management system that collects purchase requests by energy source for each plant and the predicted power generation of the above power generation facilities.

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