KR101953570B1 - Thermoelectric composite grid model - Google Patents

Abstract

The present invention relates to a method of designing a thermoelectric composite grid model, and more specifically, to a technology for designing an optimal thermoelectric composite microgrid demonstration model for reduction of a thermoelectric energy and a mutual stable balancing. To this end, the present invention comprises the following steps: investigating basic information on a thermoelectric energy consumption and a load capacity of each building in a site; analyzing an economic efficiency through the basic information on thermoelectricity; designing an operation scenario of a thermal and an electrical storage device and an energy generation source according to thermal and electrical load patterns; calculating an optimal capacity design result of a thermal source, an electrical source, and an energy storage device through the analysis of an economic efficiency; and designing an empirical infrastructure for balancing thermal and electrical energies according to the optimal capacity design result of the thermal source, the electrical source, and the energy storage device through the analysis of an economic efficiency and an MG operation scenario.

Description

{THERMOELECTRIC COMPOSITE GRID MODEL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for designing a thermoelectric composite grid model, and more particularly, to a technique for designing an optimal thermoelectric hybrid microgrid demonstration model for a seamless and mutual stable balancing of thermal electric energy.

As global warming and the severity of environmental pollution have gradually increased over the past few decades, we have become globally conscious of the need for energy savings and greenhouse gas reductions. A variety of new and renewable energy sources such as solar, solar, wind, geothermal, etc. have been proposed to replace existing fossil fuels. However, they are not competitive in terms of price competitiveness and many technical problems. Many investments and research activities are in progress due to government support.

The current electric power infrastructure is produced centrally by hydropower, thermal power, and nuclear power, and then it is unilaterally transmitted and distributed by some monopolistic companies, and is billed based on unilaterally fixed prices. Although the billing system is open to public, electricity is generally considered to be less elastic than other goods. Recently, with the recognition of the aging of some electric power infrastructure and the recognition of the necessity of new and renewable energy, there is a need for a completely different electric power infrastructure, so that the energy produced by installing the direct solar panel is self- Families are also emerging that return power to utility operators.

In the future, plug-in hybrid vehicles are expected to show rapid growth over the next 20 years, which means cars that previously only moved to gasoline / diesel will account for a large portion of the household power consumption. In addition, by supplying utility electric power from utility companies continuously, it is possible to charge self-sufficient energy facility consisting of renewable energy and energy storage, or a larger micro-grid, The need to organize by building and region will also increase.

Among micro-grid consumers, those who have the ability to supply power as well as self-consumption by their power generation facilities in the power supply network have emerged. However, in the existing power supply network, This is a new power generation / consumption model that maximizes the energy utilization of the entire network by utilizing the electric energy produced by the self-generated power consumers in the power supply network. . Micro-Grid, which is small in size, is called a Smart Grid, a Smart Grid, or a Smart Grid. Generally, the micro grid system consists of a plurality of distributed power sources such as wind power generation, photovoltaic power generation, and fuel cell, an energy storage device such as a battery storage device, and a plurality of loads. An energy management system for monitoring and controlling each configuration is connected .

In the future, there will be a demand for a system that can flexibly and efficiently bundle various energy sources with new types and sizes of energy demand sites. However, This system has considerable technical difficulties due to its nonlinear characteristics and difficult future predictability. For example, Hybrid cars are made up of only two energy sources (engine and battery), but their diversity in energy consumption patterns makes optimization very difficult.

Korean Patent No. 10-1682860 entitled " Method for Optimal Design of a New & Renewable Energy Grid and Computer-Readable Recording Medium on which a Program for Performing the Method is Recorded ", energy saving and carbon dioxide emission reduction using a new renewable energy grid In order to construct a renewable energy supply system that best suits a given load characteristic, an optimal facility capacity design technique including an energy production based on each facility capacity, an economical analysis based on an initial investment cost, and an operation cost is disclosed.

However, in order to reduce the heat and electric energy in order to reduce the energy in the grid, it is required to secure the feasibility through the optimum capacity design and verification model of the heat source, electric source, and energy storage facility.

[Prior Art Literature]

[Patent Literature]

Korean Patent No. 10-1682860

SUMMARY OF THE INVENTION It is an object of the present invention to provide an overview of a basic design, a basic data investigation, an economic analysis, and a MG operating scenario for designing a thermal electric hybrid grid model, It is designed to design the optimal capacity of the circulation and energy storage facility and to secure the feasibility of the design of the thermoelectric complex MG demonstration model.

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A method for designing a thermal-electric combined grid model according to a preferred embodiment of the present invention includes the steps of: examining basic information on the amount of heat electricity and the load capacity of each building in a site; Analyzing economic efficiency through the basic information of the thermal electricity; Designing operating scenarios of heat, electrical storage devices and power generation sources according to thermal and electrical load patterns; Calculating an optimal capacity design result of the heat source, the electric source, and the energy storage device through economical analysis; And designing an empirical infrastructure for thermal and electrical energy balancing according to the MG operation scenario and the optimum capacity design result of the heat source, the electric source, the energy storage device through the economic analysis, and analyzing the economical efficiency Constructing a grid according to an energy source; Setting an input value for each element of each energy source based on the basic capacity calculation value; Applying the actual installation model specification; And subdividing by type for economic analysis, the step of subdividing by type for the economic analysis comprises: calculating based on input values of each energy source; Extracting a type that matches the purpose among the result values; And a step of dividing the economical efficiency when the new renewable energy source is not established, the maximum possible economical efficiency through the construction of a single new renewable energy source, and the economical efficiency when all the planned renewable energy sources are constructed, The steps to build the grid include building a grid that includes a utility grid, a grid of photovoltaic power, a cogeneration power plant, a fuel grid, and a thermal grid that includes electrical loads and cogeneration, fuel cells, boilers, and thermal loads , And the input values for each element of each energy source based on the basic capacity calculation value use input values provided for predetermined intervals including '0', and the MG driving scenario uses a heat source, , And is based on an optimal capacity design result of the energy storage device, Wherein the thermal follow-up operation includes a thermal follow-up operation and an electrical follow-up operation, wherein the thermal follow-up operation is a thermal-follow-up operation of the cogeneration power generation and fuel cell according to a thermal load use pattern, The ESS is an electric follow-up operation of the ESS that discharges under the maximum demand power. In the emergency mode, i) When the load is smaller than the power generation amount, it prevents reverse transmission through ESS charging. Ii) when the electric power consumption is higher than the target value of the electric power peak reduction, the electric power follow-up operation is performed when the ESS discharge and the ESS SOC are less than 40%, and iii) the electricity according to the heat- Chargeable SOC reserve in ESS only for the month and time when the ESS is charged and the heat-follow- And iv) when the supply of photovoltaic power is discontinued, the electricity-follow-up operation is performed through the cogeneration power generation, the heat generation during the electric follow-up operation through cogeneration is stored in the overheated thermal storage tank, And a capacity capable of accumulating heat in the storage tank is secured only in the weather.
In addition, the step of surveying the basic information of the present invention includes examining the electric room and the transformer status of each building in the site, examining the electric equipment drawing status of each building, examining the actual electric power consumption status of each building, And investigating at least one of the heat utilization and the electricity and heat load status.

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As described above, according to the embodiment of the present invention, the outline of the basic design, the investigation of the basic data, the economic analysis and the MG operation scenario are presented for the design of the heat and electric power composite grid model, And the feasibility of designing a thermal and complex hybrid MG model can be secured.

FIG. 1 is a schematic view illustrating a method of designing a thermoelectric composite grid model according to a preferred embodiment of the present invention.
FIG. 2 is a schematic diagram of a method for designing a thermoelectric composite grid model according to a preferred embodiment of the present invention.
FIG. 3 is a graph showing the input value setting for each element of the method for designing a thermoelectric composite grid model according to a preferred embodiment of the present invention.
FIG. 4 is a graph showing a CHP driving graph according to a monthly thermal load pattern for a method of designing a thermoelectric composite grid model according to a preferred embodiment of the present invention
FIG. 5 is a diagram showing a configuration of a thermal-electric-combined-type infrastructure for a method of designing a thermoelectric composite grid model according to a preferred embodiment of the present invention
FIG. 6 is a block diagram of a thermal network for a method of designing a thermoelectric composite grid model according to a preferred embodiment of the present invention
FIG. 7 is a schematic diagram of a construction equipment disconnection line for a method of designing a thermal / electric hybrid grid model according to a preferred embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, 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 this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, a method of designing a thermoelectric composite grid model according to a preferred embodiment of the present invention will be described by applying to a university in Korea.

A method of designing a thermoelectric composite grid model according to a preferred embodiment of the present invention will be described with reference to the drawings.

Examining basic information on the amount of heat electricity and the load capacity of each building in the site of the present invention; Analyzing economic efficiency through the basic information of the thermal electricity; Designing operating scenarios of heat, electrical storage devices and power generation sources according to thermal and electrical load patterns; Calculating an optimal capacity design result of the heat source, the electric source, and the energy storage device through economical analysis; And performing the demonstration infrastructure for heat and electric energy balancing according to the MG operation scenario and the optimal capacity design result of the heat source, the electric source, and the energy storage device through the economical analysis.

As shown in FIG. 1, the step of investigating the basic information on the amount of heat electricity and the load capacity of each building in the site is performed by examining the electric room and the transformer status of each building in the site, , The actual power consumption state of each building is investigated, at least one of the electric power consumption and the heat use amount in the site is investigated, and the electricity and heat load state is investigated.

The investigation of the current status of the electrical room and transformer in the university for the above site construction will be explained. For example, a survey of the current status of electrical rooms and transformers in the university showed that all 11 electrical rooms consisted of 22.9kV and 3.3kV lines. In addition, the main power coming in from KEPCO comes into the electricity room of the human history hall, and the KEPCO meter is installed. It is possible to investigate the current status of each electric room and transformer and use it as basic data on the electric power load.

Explaining the current status of electrical installation drawings for each of the above buildings for building a site, most of the drawings for the existing installations do not match the site, and the basic drawing work can be conducted by examining the electrical room and heat piping facilities in the university. In addition, some drawings can be used as data for designing by carrying out CAD work.

It is possible to investigate the university low pressure feeder to build the site. More specifically, first, the installation location of the instrument for designing the thermal and electric sharing models is determined. In other words, low pressure feeder survey was conducted on 26 buildings of 11 electric rooms. In addition, if the load is not indicated on the panel of the section of the personnel office electrical room, the unidentified load is installed on the instrument during the power failure operation.

Investigate the power usage and heat usage of the university for the site construction. More specifically, one year or monthly, daily power consumption is investigated and analyzed. Also, since it is the total amount of electricity used through the existing electric meter, each building is based on the transformer capacity. In addition, heat usage is calculated based on monthly city gas fee per building.

The step of analyzing the economic efficiency through the basic information of the thermal electricity will be described. First, the goal of the step of dividing the economical efficiency is to improve the reliability of the design of the heat and electric composite grid model, and to verify the validity of the result of the calculation of the optimal capacity of the MG through the method of estimating the power load pattern proposed in the conceptual planning.

As for the analysis method, the economical efficiency when the new renewable energy source is not built up, the maximum possible economical efficiency through the construction of a single new renewable energy source, and the economical efficiency when all the renewable energy sources are built Compare.

First, as shown in FIG. 2, Schematic constructs electric (AC, DC), heat, and hydrogen grids. At this time, the electric grid may be Grid (KEPCO), Electrolyzer, Electric Load, PCS, PV, ESS, CHP, FC and the like. The thermal grid may be CHP, FC, Boiler, Thermal Load, and the like. Hydrogen grids can be Electrolyzer, Hydrogen Tank, etc.

Then, an input value is set for each energy element as shown in FIG. More specifically, an input value for each element is set based on the basic capacity calculation value. Here, the main facility input values are PV 0, 800, 1000, and 1200 kW, and CHP 0, 200, 300, and 400 kW. At this time, by displaying the value '0', it is possible to derive the economic analysis value when the facility is not applied.

In addition, the actual installation schedule model is selected and the specifications are investigated. For example, solar PV (PV) has a polycrystal of 335 W and an efficiency of 16%. In addition, ESS uses General Li-ion Battery. ELECTROLYZER is a water electrolytic unit that is connected to the AC line and internally operates as DC. The PCS is a power conversion device for connecting the battery to the power system. Fuel cells produce batteries and heat, and select to produce 4kW of heat on an electric 5kW basis. CHP produces electricity and heat, and selects 300 kW of electricity to produce 300 kW of electricity.

Thereafter, the respective loads are inputted for the heat load and the electric load. More specifically, Electric Load inputs 8,760 data a year. In addition, thermal load can be estimated based on gas consumption by deriving 8,760 data per year.

For economic analysis, we subdivide by type. The above types are selected as follows. Case 1 is a case where power is supplied from Korea Electric Power Grid without connecting renewable power. Case 2 and Case 3 are constructed only by PV or CHP, and Case 4 ~ 8 are cases when a renewable energy source is constructed.

 Execute Calculation based on each input value of Resources, Components, and Loads. Then, as shown in the table below, extract 8 Cases that match the purpose of the task among the Results.

CASE PV (kW) CHP (kW) FC (kW) COE ($ / kWh) Cost / NPC ($) Cost / Operating Cost ($) Cost / Initial Capital ($) CASE1 X X X 0.1 1.30E + 07 1005571 0 CASE2 1,000 X X 1.15E-01 1.44E + 07 8847804 3.00E + 07 CASE3 X 300 X 0.115022 1.44E + 07 1070552 600000 CASE4 1,000 300 5 0.129592 1.59E + 07 9511441 3615000 CASE5 1,000 300 10 0.129592 1.59E + 07 9509183 3630000 CASE6 1,200 200 10 0.129592 1.59E + 07 9109863 4122857 CASE7 1,000 300 10 0.130649 1.60E + 07 9523468 3701429 CASE8 1,200 200 X 0.130346 1.60E + 07 9199129 4150000

<Table 1. Result data for each case>

More specifically, we divide the case into economical efficiency when no new and renewable energy sources are built, maximum possible economical efficiency through the construction of a single new and renewable energy source, and economical efficiency when all new and renewable energy sources are planned . Then, we compare the data by case and extract the case that best matches the economic objective from the result of each case.

As a result of the economic analysis, the thermal energy storage device and the capacity of the power generation source are calculated as in the case of the best economical case. At this time, an electric storage device (ESS) and a heat storage device (heat storage tank) are operated to perform load shifting. Further, the heat storage tank is diverged into A and B, and corresponds to the base heat load and the fluctuating heat load.

Once the economics analysis is completed, the operating scenario is designed.

First, the scenario design goal is to design the operating scenario of the thermal storage device and the generator according to the thermal battery load pattern, and to establish the basic concept of the EMS optimal operation algorithm. At this time, the scenario design method is divided into the normal mode and the emergency mode, and the driving method in the normal mode and the driving mode in the emergency mode are established.

The continuous mode consists of a thermal follow-up operation and an electrical follow-up operation. The column-following operation is a column-following operation of CHP and FC according to the heat load usage pattern. In addition, the above-described electric tracking operation is a basic electric follow-up operation of an ESS that charges at a light load and discharges under a heavy load or a maximum demand electric power.

The normal mode operation condition is CHP, FC operating condition (monthly heat load pattern and CHP heat production schedule) with heat load use pattern.

As shown in FIG. 4, the CHP is operated at a specific time in the morning (6:00 to 9:00) and in the afternoon (17:00 to 20:00) although the monthly difference is somewhat different.

The basic electrical follow-up operating conditions of the ESS are charged at the time of light load at the season, and discharged at the time of the heavy demand and the maximum demand power.

Emergency mode is performed when Peak Cut control (electricity follow-up operation) and reverse transmission (power generation amount> load amount) are required when normal operation and other operating conditions are required.

If the power generation amount is larger than the load amount, the power generation amount-load amount is charged to the ESS to prevent reverse transmission. It is economical to charge the ESS and discharge at the maximum load by light load according to the high voltage A selection ii. When the total used load is over 2,137 kW, the peak power through ESS discharge can be reduced by 20% (electric follow-up operation).

Emergency mode operation conditions are: when the heat load is surging in winter (heat-driven operation), when the PV power supply is stopped, when the heat source (CHP, FC) is stopped, and when KEPCO power is shut down (power failure).

Measures to cope with emergency scenarios can be found in the table below.

NO Emergency mode contents EMS control plan and countermeasure scenario One Power generation> Load (reverse transmission prevention) ㅇ Prevent reverse transmission by charging ESS
ㅇ It is necessary to secure reserve ratio of SOC that can charge ESS only for the month and time when reverse transmission possibility is predicted through annual average data. 2 Reduce usage fees ㅇ Temporary application only on the day when ESS is predicted not to control Peak Cut 3 Peak Cut control ㅇ Power consumption> Target of reduction of power peak (2,137kW) ESS discharge and ESS SOC 40% or less CHP Electricity following operation 4 Winter heat load soaring ㅇ Electricity generation amount due to CHP heat-follow-up operation Need to secure reserve ratio of SOC that can charge ESS only for the month and time when ESS charge and heat-following operation are predicted 5 When the supply source is stopped (PV) ㅇ Electricity following operation by CHP, heat generation overheat accumulation heat storage tank, and electricity follow-up operation are expected. 6 When the supply of heat source is stopped (CHP, FC) ㅇ New heat source drive for automatic driving and restoration of existing heat source 7 Power failure ㅇ ESS SOC 40% for 1 hour independent operation of Critical Load

<Table 2. Emergency scenarios and countermeasures>

Once operational scenarios are designed, they are designed to implement a demonstration infrastructure for thermal energy balancing.

As shown in FIG. 5, an infrastructure for demonstrating the thermal electricity balancing model according to the heat source, the electric source, the optimum capacity design result of the energy storage device, and the MG operation scenario through the economic analysis is constituted.

The basic design of the building is to be designed for thermal balancing and for residential and office thermal loads. For example, the main electrical load constitutes the lecture hall of the humanities and health welfare centers. Also, the heat load of the lecturer is divided into the residential type (dormitory) and the office type (industry-academia cooperation). In addition, thermal electricity balancing through ESS and heat storage tank is designed. In addition, thermal and load type thermal load sharing is designed.

Since then, the thermal and thermal infrastructure has been designed to enable thermal energy sharing between the buildings and integrated management of the heat source. Also, we compare the data before and after the construction of the infrastructure and the exact capacity of the heat plant by installing the calorimeter.

The entire building layout plan shall be installed in the vicinity of the dormitory of the future and the office of the university-industry cooperation partner to establish thermal electricity sharing. In addition, PV and ESS installation place should be installed in dense places around the pipe. In addition, the demonstration place for the R / D project is installed in the library and its surroundings. In addition, thermal electricity sharing using FC is installed in the gymnasium.

As shown in FIG. 6, the thermal network diagram shows a small-capacity, large-capacity heat storage tank in parallel due to the difference in the thermal load pattern for each season. For example, the thermal network diagram is composed of 2 heaters + CHP and FC + PVT.

Also, the heat storage tank according to the heat load pattern can be operated in parallel. More specifically, two large-capacity heat storage tanks for low-load small capacity heat storage tanks are connected in parallel and connected in series. In addition, the temperature of the auxiliary heat storage tank is maintained at a low temperature (about 55 to 60 ° C) to absorb all the CHP generation arrays into the main heat storage tank. In addition, the CHP accumulates the heat load in the auxiliary storage tank during the electric follow-up operation and configures the CHP to maintain the maximum efficiency, and the excess generated heat load activates the air-cooling cooler for CHP. Also, in order to increase the heat load of the account with less heat load, it is possible to use heat load in all four seasons by expanding heat supply to restaurants, heat exchangers, In addition, the heat piping is connected to other residential facilities and industry-academia cooperatives to form a system considering the expansion of heat supply load. In addition, a small heat storage tank with a small heat load is operated by main heat storage tank from June to September.

Also, as shown in Fig. 7, the wiring diagram of the construction equipment disconnection line is designed. For this purpose, the electrical relevance between each facility and the location appropriateness according to power efficiency are examined for practical design.

Once the basic design for the installation facility is established, the integrated thermal and thermal operation is designed.

More specifically, the design of the photovoltaic system is completed by choosing candidate sites such as the roof floor (19 places) and ground installation (4 places) with a 1,000kW class, and the final installation site is decided. In addition, concentrate on the two health and welfare centers and the humanities center where loads are concentrated.

In addition, the ESS equipment configuration plan is installed by comparing the advantages and disadvantages of each ESS installation type. The table below shows the advantages and disadvantages of each ESS installation type.

division How to install in a building Container type Advantages ㅇ Small operating cost compared to container type
ㅇ No external site required
ㅇ Suitable for large-capacity dedicated buildings ㅇ Easy to construct and transport
ㅇ Prevention of expansion of secondary damage in case of accident
ㅇ Accessibility as a tour course Disadvantages ㅇ Installation work in existing facilities
ㅇ Concerns about interference with existing facilities
ㅇ Concerns about second accident ㅇ Container construction cost
ㅇ Large cost of operation compared to the way in the building

<Table 3. Comparison of disadvantages by ESS installation type>

For example, in an ESS facility configuration, installation is selected inside the building to minimize losses. Especially, the underground of Health and Welfare 1 can secure 2,000kWh class installation space, and it is located close to the electric power room of the health welfare center 2, so it is easy to link the grid. For example, the site consists of two regions with 1MWh, two PCSs with 250kW class, and two PCSs with 250kW class. In addition, it is possible to examine the thickness of the wire and the capacity of the circuit breaker at the time of low-voltage high-current connection, reflecting the reverse power relay according to the low voltage connection.

Describes the CHP installation (thermoelectric) configuration. The CHP is installed outdoors next to the storage facility of Future University in the residential facility, and the heat storage tank is installed outside the future. The heat storage tank is stable in binary and can efficiently operate MG (small capacity 1,300Mcal / h, large capacity 2,800Mcal / h). In addition, a small-sized heat storage tank with a small heat load runs in the main storage tank from June to September. Heat pipes can be connected to other residential facilities and industry-academia partners to supply hot water heat load. Hot water hot water can be supplied to the restaurant of future bachelor (heat load). At this time, a separate meter is needed. Heat piping can be extended to industry-academia cooperation pipe and supplied to hot water supply and dehumidification cooling / heating system (heat load). It is possible to additionally install an air-conditioning dehumidifier according to an increase in heat load.

Describe the FC equipment (thermal electricity) configuration. Because it is a water-electrolytic FC, take care of the safety of the tank tank. Install on the rooftop of a rare gym, but do not interfere with sunlight. At this time, the production heat can be supplied suitably to the use temperature of the gymnasium water treatment room of 31 ° C. Production electricity can be linked to the gym switchboard. In addition, the PV of the rooftop of the gymnasium can be used for the DC supply for the power supply.

PVT equipment (thermoelectricity) The PVT equipment of electricity 0.4kW and heat 3.6kW is installed on the wall between the front and the floor of the room for the gymnasium. At this time, the production heat is supplied pneumatically to the first floor well aging-mediapark room.

Optimize design of thermal and electrical complex MG model through EMS linkage and infrastructure implementation design. The data collected through EMS and AMI can be used to optimize the thermal design and accurate implementation of the MG operating scenario. 2, and 3 of the EMS and IoT control technology demonstration and EMS algorithm demonstration. It also establishes the EMS optimization algorithm concept according to the heat load and electric load facility operation scenarios. In addition, the concept of EMS optimization algorithm is established according to the operating scenario of the heat source and the generator facility.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is possible to carry out various changes in the present invention.

Claims (5)

Examining the basic information on the amount of heat electricity and the load capacity of each building in the site;
Analyzing economic efficiency through the basic information of the thermal electricity;
Designing operating scenarios of heat, electrical storage devices and power generation sources according to thermal and electrical load patterns;
Calculating an optimal capacity design result of the heat source, the electric source, and the energy storage device through economical analysis; And
Designing an empirical infrastructure for heat and electric energy balancing according to the optimal operation of the heat source, the electric source, the energy storage device, and the MG operation scenario through the economic analysis;
Lt; / RTI &gt;
The step of analyzing the economics
Constructing a grid according to an energy source;
Setting an input value for each element of each energy source based on the basic capacity calculation value;
Applying the actual installation model specification; And
Subdividing by type for economic analysis;
Lt; / RTI &gt;
The step of subdividing by type for the economic analysis
Calculating based on input values of each energy source element;
Extracting a type that matches the purpose among the result values;
The step of subdividing the economical efficiency when the new and renewable energy sources are not established, the maximum possible economical efficiency through the construction of a single new and renewable energy source, and the economical efficiency when all the planned renewable energy sources are constructed;
Lt; / RTI &gt;
Wherein the step of constructing the grid according to the energy source comprises the steps of: providing a grid including a utility grid, a solar grid, a cogeneration power plant, a fuel grid and a thermal grid including a cogeneration power plant, a fuel cell, a boiler, , &Lt; / RTI &gt;
An input value for each element of each energy source based on the basic capacity calculation value uses an input value provided for each predetermined interval including '0'
The MG operation scenario is prepared based on an optimal capacity design result of a heat source, an electric source, and an energy storage device through economical analysis,
The MG operation scenario includes a normal mode and an emergency mode,
The following mode includes a thermo-following operation and an electric follow-up operation, and the thermo-following operation is a thermo-follow-up operation according to a thermal load use pattern and a thermo-follow operation of the fuel cell. The electric follow-up operation of the discharging ESS,
In emergency mode
i) If the load is smaller than the power generation amount, reverse transmission through ESS charging is prevented, and SOC reserve ratio that can be recharged by ESS is secured only for the month and time when the reverse transmission possibility is predicted,
ii) When the electric power consumption is higher than the target value of the electric power peak reduction, when the ESS discharge and the ESS SOC are 40% or less,
iii) Electricity generation due to heat-follow-up operation of cogeneration system When the overcharge ESS is charged and only the month and time when the heat-follow-up operation is predicted, the chargeable SOC reserve ratio of the ESS is secured,
iv) In case of stopping the supply of solar power generation, the electricity is followed by the cogeneration system and stored in the thermal storage tank when the thermal power generation through the cogeneration system is overheated and the electric storage operation through the cogeneration system is predicted, Thereby ensuring a capacity for heat storage.
The method according to claim 1,
The step of examining the basic information
Investigate the current status of the electric room and transformer of each building in the site, investigate the current status of the electrical equipment drawings of each building, investigate the actual power consumption status of each building, examine the power consumption and heat usage in the site, And at least one of the irradiation and irradiation is performed.
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