KR101752389B1 - Energy management apparatus and method for trading a complex energy of heat and electricity as bidirectional - Google Patents

Abstract

The present invention relates to a thermal power supply system for supplying heat and power to subscriber generations via a thermal network and a power network, the system comprising: a plurality of Energy generation generation; And a thermal power supply system including a thermal power supply that calculates and operates the amount of heat and power produced according to an energy management algorithm based on the power consumption, the electric power production, the heat capacity and the heat output of the subscriber generation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy management apparatus and a method for energy-

The present invention relates to energy management techniques. And more particularly to a technique for integrally managing heat and power.

In recent years, the energy supply paradigm has shifted from distributed generation to energy as the energy technology - especially the central supply system by large power generation in terms of power supply - has become more difficult for residents to face environmental problems and the construction of power plants and transmission and distribution facilities. Most of the countries including Korea are strengthening the supply of new and renewable energy sources such as solar power and wind power, so distributed power generation is accelerating.

In addition, the intelligentization of the electric power network and the combined management of thermal networks and various fuels are being developed for the next generation energy society such as smart grid and smart city.

With the spread of new and renewable energy and the spread of ICT technology, it will be possible to sell the energy remaining in the consumer to the energy supply company by holding the energy source such as solar power, fuel cell, The age is coming. Following the US, Japan is also preparing to liberalize its electricity retail business systematically.

Conventional energy management technology for buildings (BEMS) is a system that manages the energy in a building by measuring and monitoring the energy of the building. It controls the equipment such as lighting, air conditioning equipment management and peak power. Effect can be obtained.

However, these systems do not manage the energy network system with bidirectional flow, because they manage and control electricity and heat independently, and the energy flow always carries energy for unidirectional flow from supply side to consumption side.

In the case of the cogeneration system, heat and power are simultaneously supplied to the system, which enables higher energy utilization efficiency than the method of separately supplying heat and power. However, the conventional cogeneration system does not deal with bidirectional energy transactions with cus- tomer who owns energy source because it conducts unidirectional type of transaction that only unilaterally supplies heat and power to the customer.

In this context, in one aspect, an object of the present invention is to provide a technique whereby both the customer and the supplier can trade heat and power in both directions.

In another aspect, the object of the present invention is to provide a system and a method for controlling the supply of electricity to a customer, wherein heat (including heating and cooling) and a supplier supplying power supply energy to a customer having an in- To provide energy management and operational technology in the case of a bidirectional energy flow between a supplier and a customer, rather than a unidirectional one.

In order to achieve the above object, in one aspect, the present invention provides a thermal power supply system for supplying heat and power to subscriber generations via a thermal network and a power network, the system comprising: A plurality of energy generation units that produce heat and power by themselves through the generator; And a thermal power supply system including a thermal power supply that calculates and operates the amount of heat and power produced according to an energy management algorithm based on the power consumption, the electric power production, the heat capacity and the heat output of the subscriber generation.

In another aspect, the invention provides an energy management apparatus for a thermal power supply system for providing heat and power to subscriber generations via a thermal network and a power network, the energy management apparatus comprising: means for obtaining power usage information and heat capacity information from the subscriber generation A generation monitoring unit for acquiring power generation amount information and heat production amount information from an energy generation generation in which heat and electric power are produced by the hybrid self-generator among the subscriber generations; A price monitoring unit for obtaining electricity price information, heat supply price information and fuel price information by time slot; And information including the power usage amount information, the power generation amount information, the heat capacity information, and the heat production amount information, and the power price information, the heat supply price information, the fuel price information, And a production planning unit for calculating a production amount of heat and electric power using supplier information including operation modeling information of the operation modeling information.

In another aspect, the present invention provides an energy management method for a thermal power supply system that provides heat and power to subscriber generations via a thermal network and a power network, the method comprising: receiving power usage information and capacitive information from the subscriber generations Acquiring power generation amount information and heat production amount information from an energy generation generation that acquires heat and power by itself among the subscriber generations through a hybrid self-generator; Obtaining power price information, heat supply price information and fuel price information by time slot; And information including the power usage amount information, the power generation amount information, the heat capacity information, and the heat production amount information, and the power price information, the heat supply price information, the fuel price information, And calculating the amount of heat and power using the supplier information including the operation modeling information of the operation modeling information.

As described above, according to the present invention, there is an effect that a customer and a supplier can trade heat and power in both directions. Further, according to the present invention, when a supplier that supplies heat (including heating and cooling) and power supplies energy to a customer who has an energy source within the household, the flow of energy is unidirectional from the supplier to the consumer Way energy flow between the supplier and the customer.

According to the present invention, the supplier can flexibly perform the supply operation of heat and electricity in consideration of the heat and electricity produced in the customer on the energy network, which is a bidirectional energy flow, and the purchase and use of heat and electricity of the receiver .

In addition, according to the present invention, the supplier can supply energy such that electric power, heat, fuel, and demand information can be combined with each other to gain benefits to the energy supplier while matching the form required by the energy user of the consumer.

1 is a configuration diagram of a thermal power supply system according to an embodiment of the present invention.
2 is a block diagram of a subscriber household according to an embodiment.
3 is an energy flow diagram of an energy generation household according to one embodiment.
4 is a configuration diagram of a thermal power supply apparatus according to an embodiment.
5 is a configuration diagram of an energy management apparatus according to an embodiment.
6 is a flowchart of an energy management method according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a configuration diagram of a thermal power supply system according to an embodiment of the present invention.

Referring to FIG. 1, a thermal power supply system 100 may comprise a plurality of subscriber generations 121, 122 and a thermal power supply 110.

The subscriber households 121, 122 and the thermal power supply 110 may be connected to a thermal network, a power network, and a data network.

The thermal network provides a path through which the heat is circulated, and the heat produced by the thermal power supply 110 may be supplied to the subscriber generations 121, 122 via the thermal network.

The power network provides a path through which power is distributed, and power produced by the thermal power supply 110 may be supplied to the subscriber households 121, 122 via the power network.

The thermal power supply system 100 according to one embodiment can supply heat and power in the energy production household 121 in addition to the thermal power supply 110. [

The subscriber households 121 and 122 may include an energy generation household 121 capable of generating heat and electric power. The energy generation household 121 can supply the heat generated by the self to the heat network and supply the power generated by the self to the power network. Of course, the energy generation household 121 can use the heat generated by the self internally and use the power produced by the self internally.

With the heat and power supply of this energy generation 121, heat can flow in both directions in a thermal network, and power can flow in both directions in a power network. Here, the bi-directional signifies the bi-directional relationship between the energy generation generation 121 and another subscriber generation or the heat power supply device 110. [

Specifically, the heat produced by the energy generation generation 121 through the thermal network may flow to the thermal power supply 110, and conversely, the heat produced by the thermal power supply 110 may flow to the energy generation 121 Can flow. In addition, the power produced by the energy generation generation 121 through the power network can flow to the thermal power supply 110, and conversely, the power generated by the thermal power supply 110 flows into the energy generation generation 121 .

On the other hand, the heat produced by the energy generation generation 121 may be supplied to another subscriber generation. The power produced by the energy generation household 121 may be supplied to another subscriber generation.

The subscriber households 121 and 122 and the thermal power supply 110 may be connected to a data network. In a data network, information can be transmitted and received in both directions.

The subscriber households 121 and 122 can transmit power consumption information and heat capacity information to the thermal power supply 110 through the data network.

Conversely, the thermal power supply 110 may transmit a control command (e.g., a demand response command) to the subscriber generations 121 and 122 over the data network and may transmit other control information to the entire subscriber households 121 and 122 And billing information for the corresponding subscriber household to the subscriber households 121 and 122, respectively.

The subscribers households 121 and 122 may be provided with a meter capable of measuring heat and power. Such a meter may measure the power usage and thermal capacity at each subscriber household 121, 122 and transmit the metered information to the thermal power supply 110.

The energy production household 121 may have a production weigher capable of quantifying heat production and power production as well as quantifying thermal capacity and power consumption. The production weigher can measure the heat and power produced by the energy generation unit 121, generate heat production information and power production information, and transmit the information to the thermal power supply through the data network.

The thermal power supply 110 may calculate the amount of heat and power produced based on individual household power usage, power generation, heat capacity, and heat output received from the subscriber households 121, 122. Then, the thermal hybrid power generator can be operated based on the calculated heat and electric power production.

2 is a block diagram of a subscriber household according to an embodiment.

2, the subscriber households 121 and 122 can be divided into an energy generation household 121 and a general household 122 capable of producing heat and electric power.

The generic generation 122 may include a general meter 212, a thermal load 230, and a power load 240.

The heat load 230 is a load using heat, and a heating device and a hot water using device are representative. The heat load 230 is connected to the thermal network via the general meter 212, the amount of heat being supplied from the thermal network can be quantified in the general meter 212.

The power load 240 is a load using electric power, and an electronic device is typical. The power load 230 is connected to the power network via the general meter 212, where the amount of power supplied in the power network can be metered in the general meter 212.

The metering of the heat and the metering of the power can be done in a separate way so that the general meter can have a separate calorimeter for weighing the heat and a watt hour meter for measuring the power.

The energy generation 211 may include a production metering 211, a combined self-generator 220, a thermal load 230 and a power load 240.

Thermal load 230 and power load 240 may be the same as thermal load 230 and power load 240 in generic generation 122. [

Energy generation generation 211 may further comprise an integrated self-generator 220, unlike generic generation 122. The composite self-generator 220 is a device capable of producing heat and electric power together.

The combined self-generator 220 may be connected to the thermal network and the power network via the yield meter 211.

The amount of heat and power produced in the composite self-generator 220 can be quantified in the production quantity meter 211. Information on the measured heat output and the power output can be transmitted to the thermal power supply 110 through the data network.

The combined autogenerator 220 may internally supply heat and power directly to the heat load 230 and the power load 240 while being connected to the heat load 230 and the power load 240. [ However, even in this case, the production quantity meter 211 can measure the heat and the electric power produced by the compound self-generator 220.

3 is an energy flow diagram of an energy generation household according to one embodiment.

The hybrid self-generator 220 is a generator capable of producing heat and electric power together, and is a representative example of a solar generator, a micro turbine, and a fuel cell. FIG. 3 shows an example of an energy generation generation 121 in which a fuel cell is used as a hybrid self-generator 220.

When fuel (for example, H2, ethanol, etc.) is supplied to the fuel cell, electric power is generated as power is generated in the stack. However, the fuel cell also radiates heat in the process of power generation in the stack, and the composite self-generator 220 can utilize this heat.

Specifically, the power generated by the power generation is output through the converter so that it can be converted to the power state of the power network. The heat generated during the power generation is output through the heat exchanger to match the heat utilization pattern of the heat network.

The heat and power produced by the composite self-generator 220 may be used internally.

Referring to FIG. 3, the heat generated by the combined autogenerator 220 may be supplied to the thermal load 230. At this time, if the thermal load is larger than the load of the thermal load 230, surplus heat is generated, It can flow out through the thermal network.

On the other hand, if the heat generated by the composite self-generator 220 is less than the load usage of the thermal load 230, the heat corresponding to the deficiency can be transferred to the thermal load 230 through the thermal network.

Power can also be generated in the power, as shown in FIG. 3, where the power produced by the composite self-generator 220 can be supplied to the power load 240. At this time, if the amount of power production is larger than the load usage of the power load 240, surplus power is generated, and such surplus power can flow out through the power network.

On the other hand, if the power produced by the composite self-generator 220 is less than the load usage of the power load 240, the power corresponding to the deficit can be delivered to the power load 240 via the power network.

Since the energy generation units capable of producing heat and electric power are included among the subscriber generations 121 and 122, the thermal power supply unit 110 may be constructed in consideration of the amount of heat and electric power generated in the energy generation household 121 Heat and power.

For example, the thermal power supply 110 can produce heat only by the amount subtracted from the amount of heat produced by the energy producing household 121. [ In addition, the thermal power supply 110 can generate power only by the amount obtained by subtracting the amount of power produced by the energy generation generation 121. [

4 is a configuration diagram of a thermal power supply apparatus according to an embodiment.

Referring to FIG. 4, the thermal power supply 110 may include a thermoelectric power generator 410 and an energy management device 420.

The combined heat and power generator 410 is a device for generating heat and electric power, and the generated heat and electric power are supplied to the subscriber generations 121 and 122 through a thermal network and a power network.

The energy management device 420 is a device for generating a control signal for the thermoelectric power generator 410. The energy management device 420 receives monitoring data from the subscriber generations 121 and 122 and generates a control signal based on the monitoring data, Signal to the thermoelectric power generator (410).

The energy management device 420 may be equipped with an energy management algorithm that uses the energy management algorithm to calculate the amount of heat and power produced, Generator 410 to generate a control signal.

5 is a configuration diagram of an energy management apparatus according to an embodiment.

5, the energy management apparatus 420 may include a generation monitoring unit 510, a price monitoring unit 520, a production amount planning unit 530, and a compensation unit 540.

The generation monitoring unit 510 obtains the power usage information and the heat capacity information from the subscriber generations 121 and 122 and generates the heat and the power by itself through the compounded one of the subscriber generations 121 and 122 The power generation amount information and the heat production amount information from the energy generation generation 121 can be obtained.

The price monitoring unit 520 may obtain the power price information, the heat supply price information, and the fuel price information by time slot. Such price information can be obtained through a communication means from a server of an authority that determines the power price, the heat supply price and the fuel price such as KPX, KEPCO, and KOGAS.

Electricity price information is a dynamic that needs to be updated in real time because there are many changes such as receipt of electricity at a system margin price (SMP) price from the electric power company according to the operator, receipt at a supplementary electricity rate, Element information.

The heat supply price information is the transaction price supplied or supplied by the operator, and the fuel transaction price can be based on the city gas rate. Because these rates vary from year to year or from season to season, they can be treated as flat rates that do not require real-time measurements.

The production planning unit 530 can calculate the amount of heat and electric power using the user information and the supplier information.

Here, the user information may include power usage information, power generation amount information, heat capacity information, and heat production amount information obtained by the generation monitoring unit 510.

The supplier information may include power price information, heat supply price information, and fuel price information. The supplier information may include thermal power supply facility capacity information indicating the capacity of the thermal power combined power generator 410 and may include operation modeling information for the components of the thermal power combined power generator 410.

Here, the operation modeling information may have a form of a relational expression or lookup table of individual energy input / output as information calculated and stored by design or measurement.

The compensation unit 540 can compensate the power generation amount and the heat production amount of the energy generation generation unit 121. [ Through this compensation process, not only the heat power supply device 110 but also the individual generation can sell the heat and electric power produced.

The compensation unit 540 may compensate the power generation amount and the heat production amount of the energy generation generation unit 121 according to the predetermined compensation policy information.

Compensation policy information can be determined according to energy supply agreement for each household. The members of the energy generation household 121 and the managers of the thermal power supply 110 are required to make contracts including electricity supply and supply-related transactions for each household, contracts for heat supply and supply-related transactions by households, and energy generated by households Power) to the thermal power supply 110 or to the thermal network, and such contracts and the like can be included in the above-mentioned compensation policy information as digital information.

The compensation policy information may include information on the amount of power generated by the time zone and the amount of compensation for the heat production. The compensation unit 540 can determine the amount of compensation for the electric power and heat production produced for each time zone according to the compensation amount information. In the separate settlement process after the death, the fee of the household is reduced according to the compensation amount, or the compensation amount may be directly transferred to the household in some cases.

The compensation policy information may include substitution information for substituting the electric power consumption of the first city area with the electric power production amount of the second city area or substituting the heat capacity of the third city area with the heat output of the fourth city area. The compensating unit 540 may utilize such usage substitution information to allow the generation or generation of heat or power to be compensated with heat or power at another time or day that the household desires.

The compensation policy information may include substitution information for replacing the power consumption with a certain amount of heat production or replacing the heat capacity with the power generation amount at a certain ratio. The compensating unit 540 can replace the power consumption with the heat output and replace the heat capacity with the electric power production amount using the substitution amount information. As a specific example, the power consumption of the power price peak time zone may be burdensome to the user, and the compensation unit 540 may replace the power consumption of the power price peak time zone with the heat output. However, in order to benefit the supplier, the compensation unit (540) can substitute the power consumption of the peak power price of the electricity price with the heat output of the peak supply price or the peak price of the fuel price. Here, the power price peak time zone can be shown by day or season, and the peak supply time of the heat supply price can be shown by season.

The compensation policy information may include price-linked compensation information that determines the compensation amount differently depending on the heat supply price or the power supply price. The compensation unit 540 may use the price-linked compensation information to determine the compensation price for the heat production differently according to the heat supply price or to determine the compensation price for the electric power production differently according to the power price.

The production planning unit 530 may be equipped with an energy management algorithm that utilizes this compensation policy information in addition to user information and supplier information so that the user and the supplier can both benefit from the heat and You can calculate the output of power.

Equation (1) is an example of a calculation formula used for determining the production amount of heat and electric power in the production amount planning unit 530.

In Equation (1), the cost of cogeneration electric power generation and cogeneration heat output cost is the cost for producing electric power and heat through cogeneration, and the cost of heat output of the boiler is the cost for producing heat through the boiler, The cost is the cost of purchasing power when the power is purchased from the grid and supplied to the power network. In Equation (1), the system backbone cost is the revenue that is received when selling the power that remains in the power network, and the compensation cost of each generation is the compensation cost for the power generation amount of the energy generation household 121, The cost of compensation for each generation of heat generation is the cost of compensation for the heat output of the energy production household (121).

The production amount planning unit 530 can determine the production amount of heat and electric power in a direction in which the expression (1) is minimized.

When the amount of heat and power produced is determined in the solar floor plan unit 530, the energy management apparatus 420 controls the output of the thermal power integrated power generator 410 or controls the on / off operation command And transmits it to the thermoelectric power generator (410). The process of generating the control signal using the user information, the supplier information, and the compensation policy information may be repeated at least five minutes.

6 is a flowchart of an energy management method according to an embodiment of the present invention.

In the following, the flow of the method is described in a certain order, but the present invention is not limited in this order so that the applicant can vary the order according to the embodiment.

Referring to FIG. 6, the energy management apparatus 420 acquires the power price information, the heat supply price information, and the fuel price information by time slot (S600).

Then, the energy management device 420 acquires power usage information and heat capacity information from the subscriber generations, and acquires power generation amount information and heat production amount information from the energy generation household in which the compound self- (S602).

Then, the energy management apparatus 420 confirms the thermal power supply facility capacity information and the operation modeling information of the component equipment (S604), and confirms the contract information corresponding to the compensation policy information (S606).

After acquiring the above-described user information and supplier information to be applied to the energy management algorithm, the energy management device 420 calculates the amount of heat and electric power using the above-described information (S608).

The energy management device 420 generates a control signal for the calculated amount of heat and power and transmits the control signal to the thermal power combined power generator 410 (S610).

As described above, according to the present invention, there is an effect that a customer and a supplier can trade heat and power in both directions. Further, according to the present invention, when a supplier that supplies heat (including heating and cooling) and power supplies energy to a customer who has an energy source within the household, the flow of energy is unidirectional from the supplier to the consumer Way energy flow between the supplier and the customer.

According to the present invention, the supplier can flexibly perform the supply operation of heat and electricity in consideration of the heat and electricity produced in the customer on the energy network, which is a bidirectional energy flow, and the purchase and use of heat and electricity of the receiver .

In addition, according to the present invention, the supplier can supply energy such that electric power, heat, fuel, and demand information can be combined with each other to gain benefits to the energy supplier while matching the form required by the energy user of the consumer.

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (15)

A thermal power supply system for supplying heat and power to subscriber generations via a thermal network and a power network,
A plurality of energy generation generations included in the subscriber generations, wherein the generations themselves generate heat and power through the hybrid self-generator; And
And a thermal power supply that calculates and operates the output of heat and power according to an energy management algorithm based on the power consumption, power generation capacity, heat capacity, and heat production of the subscriber generation,
The thermal power supply apparatus includes:
Compensates the power generation amount and the heat production amount of the energy generation household according to the predetermined compensation policy information,
Wherein the compensation policy information includes usage substitution information for substituting the power usage amount of the first time zone with the power generation amount of the second zone or substituting the heat capacity of the third zone with the heat amount of the fourth zone. delete The method according to claim 1,
Wherein the compensation policy information includes compensation amount information for a power generation amount and a heat production amount by time slot. delete A thermal power supply system for supplying heat and power to subscriber generations via a thermal network and a power network,
A plurality of energy generation generations included in the subscriber generations, wherein the generations themselves generate heat and power through the hybrid self-generator; And
And a thermal power supply that calculates and operates the output of heat and power according to an energy management algorithm based on the power consumption, power generation capacity, heat capacity, and heat production of the subscriber generation,
The thermal power supply apparatus includes:
Compensates the power generation amount and the heat production amount of the energy generation household according to the predetermined compensation policy information,
Wherein the compensation policy information includes usage substitution information for substituting the power usage amount into a heat production amount in accordance with a certain ratio or substituting the thermal capacity with a power generation amount at a certain ratio. A thermal power supply system for supplying heat and power to subscriber generations via a thermal network and a power network,
A plurality of energy generation generations included in the subscriber generations, wherein the generations themselves generate heat and power through the hybrid self-generator; And
And a thermal power supply that calculates and operates the output of heat and power according to an energy management algorithm based on the power consumption, power generation capacity, heat capacity, and heat production of the subscriber generation,
The energy management algorithm calculates the amount of heat and power produced using supplier information and user information,
The supplier information includes power price information, heat supply price information, fuel price information, thermal power supply facility capacity information, and operation modeling information of the component devices,
Wherein the user information includes power usage information, power generation amount information, heat capacity information, and heat production amount information of the subscriber households. The method according to claim 6,
Wherein the energy management algorithm calculates the amount of heat and power by further utilizing compensation policy information for compensating the power generation amount and the heat production amount of the energy generation generation. 1. An energy management device for a thermal power supply system for providing heat and power to subscriber generations via a thermal network and a power network,
A generation monitoring unit that obtains power consumption amount information and heat capacity information from the subscriber generations and acquires power generation amount information and heat production amount information from an energy generation household in which the compound self-generator among the subscriber generations self-generates heat and electric power;
A price monitoring unit for obtaining electricity price information, heat supply price information and fuel price information by time slot;
The user information including the power usage amount information, the power generation amount information, the thermal capacity information, and the heat production amount information, the power price information, the heat supply price information, the fuel price information, the thermal power supply facility capacity information, A production planning unit for calculating a production amount of heat and electric power using supplier information including operation modeling information; And
And a compensating unit for compensating the power generation amount and the heat production amount of the energy generation generation,
Wherein the compensating unit replaces the power consumption with a heat output according to a predetermined ratio. delete 9. The method of claim 8,
Wherein the compensation unit determines the compensation price for the heat production differently according to the heat supply price. delete 9. The method of claim 8,
Wherein the compensating unit replaces the power consumption of the power price peak time zone with the heat output of the peak power supply price zone. delete delete delete

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