JP4722007B2 - Energy supply control system - Google Patents

Description

  The present invention relates to an energy supply amount control system, and is particularly useful when applied to a consumer from a plurality of energy supply sources that emit greenhouse gases as energy is generated.

  In recent years, various efforts have been made to reduce greenhouse gases such as carbon dioxide that cause global warming. Companies are required to voluntarily implement measures to reduce greenhouse gas emissions. For example, companies classified as manufacturing industries such as the chemical industry and the steel industry are directly involved in the process of producing products. Since greenhouse gases are emitted, greenhouse gas emissions are reduced by using alternative chemicals that do not generate greenhouse gases and improving manufacturing facilities.

  On the other hand, businesses classified as wholesale / retail, finance / insurance, etc. do not directly emit greenhouse gases, but mainly consume electricity, heat, etc. Contributes indirectly to greenhouse gas emissions. For this reason, it is necessary for such businesses to make efforts to save energy in order to reduce greenhouse gas emissions.

  In particular, businesses in an environment where multiple energy sources with different greenhouse gas emissions depending on the fuel used can be selected, taking into account the balance between the amount of greenhouse gas generated due to energy consumption and the charge on energy. Thus, it is necessary to appropriately select and use energy from these energy supply sources.

  Thus, there exists an energy management system in the technique which provides energy in consideration of the emission amount of the greenhouse gas accompanying energy consumption (refer patent document 1). According to such an energy management system, inexpensive energy is provided to consumers in consideration of greenhouse gas emissions accompanying energy consumption.

  However, such an energy management system supplies energy from a plurality of energy sources as appropriate to provide consumers with low-cost energy and knows how much greenhouse gas has been emitted as a result of using this energy. Although it can be obtained, it does not indicate how much energy is supplied from multiple energy sources to reduce greenhouse gas emissions. That is, energy is not appropriately supplied so as to satisfy the greenhouse gas emission amount desired by the consumer.

JP 2002-140396 A

  In view of such circumstances, the present invention provides a plurality of energy supply sources that emit greenhouse gas as energy is generated, from each energy supply source to the consumer to satisfy the greenhouse gas emission amount desired by the consumer. An object of the present invention is to provide an energy supply amount control system that controls the amount of energy supply.

In order to achieve the above object, the first aspect of the present invention is to generate energy by burning fuel and to supply energy supplied to consumers from a plurality of energy sources that emit greenhouse gases. An energy supply amount control system for controlling, a communication means for exchanging information via a predetermined communication path, an energy requirement amount indicating an amount of energy required by the consumer, and the energy requirement amount An information terminal that transmits a greenhouse gas upper limit value indicating the upper limit value of the greenhouse gas discharged with the generation of the corresponding energy via the communication means, an energy requirement amount and a greenhouse gas transmitted by the information terminal An energy supply amount control server that receives the upper limit value and has an energy supply amount calculation means and an energy supply amount control means; An energy supply source capable of adjusting the amount of energy supplied to the consumer based on a set value given by the energy supply amount control server, wherein the energy supply amount control server is a unit of the energy supply source. Stores information representing energy supply capacity per hour, information representing charges per unit amount of energy, information representing greenhouse gas emissions emitted when generating energy per unit amount, and said energy supply amount The calculation means creates an objective function for obtaining a greenhouse gas emission amount generated when generating an amount of energy from the information indicating the greenhouse gas emission amount and the energy requirement amount, and the greenhouse gas emission amount Each energy supply source to the consumer from the information representing the energy requirement amount and the greenhouse gas upper limit value. A constraint equation is set so that the amount of greenhouse gas emissions generated when generating the amount of energy to be supplied is less than or equal to the upper limit of the greenhouse gas, and the amount of energy supplied to the consumer from each energy supply source A constraint equation that satisfies the amount of energy indicated by the energy requirement amount is created, and the objective function and the constraint equation are solved by linear programming so that the amount of greenhouse gas emissions is minimized. The energy supply amount control means transmits the setting value calculated by the energy supply amount calculation means to the energy supply source, and further, The energy supply source is provided so as to be able to supply energy to a plurality of consumers, and the energy supply amount control server can be used by each of the consumers. An energy allocation amount that is an upper limit of energy from each energy supply source is stored, and the energy supply amount calculation means creates a constraint condition formula that sets the amount of energy supplied to the consumer to be equal to or less than the energy allocation amount. The energy supply control system is characterized by

In the first aspect, the consumer is supplied with the required amount of energy, and the amount of greenhouse gas emissions resulting from the generation of this energy is less than or equal to the greenhouse gas upper limit specified by the consumer. Become. As a result, the consumer can use energy by suppressing the amount of greenhouse gas emissions required for energy generation to be equal to or less than a desired amount of emissions. Moreover, when there are a plurality of consumers, the upper limit of the energy of each energy supply source that can be used by each consumer is determined in advance as an energy allocation amount, and energy is supplied to each consumer based on this energy allocation amount. . As a result, each consumer can reliably use the energy required by the customer as long as the energy allocation amount is not exceeded, regardless of the amount of energy supplied to other consumers.

According to a second aspect of the present invention, in the energy supply amount control system according to the first aspect, the energy supply amount calculation means converts the energy per unit amount of energy into the energy supplied to the consumer. An energy function characterized in that an objective function for determining a charge to be charged is created, and the set value is calculated by solving the objective function and the constraint equation by linear programming so that the charge of energy supplied to the consumer is minimized. In the supply control system.

  In this second aspect, the consumer is supplied with the required amount of energy, and the amount of greenhouse gas emissions that accompanies the generation of this energy is less than or equal to the greenhouse gas upper limit value specified by the consumer. And the price of this energy is the lowest price. Thereby, the consumer can suppress the emission amount of the greenhouse gas required for energy generation to be equal to or less than the desired emission amount, and can use the energy at the lowest cost.

A third aspect of the present invention is an energy supply amount control system that controls the amount of energy supplied to consumers from a plurality of energy supply sources that generate energy by burning fuel and emit greenhouse gases. The communication means for exchanging information via a predetermined communication path, the energy requirement amount indicating the amount of energy required by the consumer, and the upper limit of the energy charge corresponding to the energy requirement amount An information terminal for transmitting an energy charge upper limit value indicating a value via the communication means, an energy request amount and an energy charge upper limit value transmitted by the information terminal, and receiving an energy supply amount calculating means and an energy supply amount control means And an energy supply amount control server having a setting value given by the energy supply amount control server. And an energy supply source capable of adjusting the amount of energy supplied to the consumer, wherein the energy supply amount control server is information representing energy supply capacity per unit time of the energy supply source, unit of energy Storing information indicating a charge per unit amount and information indicating a greenhouse gas emission amount generated when generating energy per unit amount, and the energy supply amount calculating means calculates a charge per unit amount of the energy. Create an objective function for obtaining a charge for energy according to the amount of energy from the information to be represented and the energy requirement amount, information representing the fee per unit amount of energy, the energy requirement amount, and the energy charge upper limit The energy charge corresponding to the amount of energy indicated by the energy requirement amount is A constraint condition formula that is less than or equal to the upper limit of the energy fee, and creates a constraint formula that satisfies the amount of energy indicated by the energy requirement amount from the energy supply source to the consumer. The objective function and the constraint equation are solved by linear programming so that the energy charge according to the required amount is minimized, and the set value of the energy supply amount from each energy supply source to the consumer is calculated, The energy supply amount control means transmits the set value calculated by the energy supply amount calculation means to the energy supply source, and each energy supply source is provided so as to be able to supply energy to a plurality of consumers. The energy supply amount control server is an energy that is an upper limit of energy from each energy supply source that can be used by each consumer. The energy supply amount calculation means stores an energy supply amount, and the energy supply amount calculation means creates a constraint condition expression that makes the amount of energy supplied to the consumer equal to or less than the energy allocation amount. .

In the third aspect, the consumer is supplied with the required amount of energy, and the charge for this energy is equal to or less than the energy charge upper limit value specified by the consumer. As a result, the consumer can use energy while keeping the energy charge below a desired charge. Moreover, when there are a plurality of consumers, the upper limit of the energy of each energy supply source that can be used by each consumer is determined in advance as an energy allocation amount, and energy is supplied to each consumer based on this energy allocation amount. . As a result, each consumer can reliably use the energy required by the customer as long as the energy allocation amount is not exceeded, regardless of the amount of energy supplied to other consumers.

According to a fourth aspect of the present invention, in the energy supply amount control system according to the third aspect, the energy supply amount calculation means calculates a greenhouse gas emission amount that is emitted when generating energy per unit amount. An objective function for determining the amount of greenhouse gas emissions associated with the generation of energy to be supplied to the consumer is created from the information represented, and the amount of greenhouse gas emissions associated with the generation of energy supplied to the consumer is minimized. The energy supply amount control system is characterized in that the set value is calculated by solving the objective function and the constraint condition equation by linear programming .

  In the fourth aspect, the consumer is supplied with the required amount of energy, the charge for this energy is less than or equal to the energy charge upper limit specified by the consumer, and the greenhouse effect associated with the generation of this energy. Gas emissions are minimized. Thereby, the consumer can use the energy by suppressing the energy charge to a desired charge or less, minimizing the amount of greenhouse gas emissions.

According to a fifth aspect of the present invention, in the energy supply amount control system according to any one of the first to fourth aspects, the amount of greenhouse gas emissions accompanying the generation of energy to be supplied to the consumer, and the energy fee Is provided to the information terminal, and the information terminal displays an emission amount of greenhouse gas and an energy charge, and is in an energy supply amount control system.

In the fifth aspect, the amount of greenhouse gas generated as a result of energy generation and the energy fee are presented to the consumer. Thereby, a consumer can recognize the influence on the environment by knowing the generation amount of greenhouse gas accompanying consumption of his own energy. Moreover, future energy use plans can be examined with reference to this presentation.

According to a sixth aspect of the present invention, in the energy supply amount control system according to any one of the first to fifth aspects, the energy is steam generated by burning fuel in a boiler. It is in the energy supply control system.

In the sixth aspect, steam generated by burning fuel in a boiler and supplied to a consumer can be controlled.

According to a seventh aspect of the present invention, in the energy supply amount control system according to any one of the first to sixth aspects, the greenhouse gas is included in exhaust gas discharged when fuel is burned in a boiler. The energy supply control system is characterized by being carbon dioxide.

In the seventh aspect, the energy can be supplied to the consumer while suppressing the amount of carbon dioxide emission that is generated as a secondary when the energy supplied to the consumer is generated to a desired amount.

  According to the present invention, an energy consumer can use energy that satisfies a restriction that is lower than the greenhouse gas upper limit value or the energy charge upper limit value set by the energy consumer. This allows consumers to use such energy that meets and requires such energy without being aware of how much energy is required from each of multiple energy sources to satisfy that constraint. can do.

  Hereinafter, the best mode for carrying out the present invention will be described. The description of the present embodiment is an exemplification, and the present invention is not limited to the following description.

<Embodiment 1>
In the present embodiment, a boiler that burns fuel is used as an energy supply source, steam generated by the boiler is used as energy, and carbon dioxide emitted when the fuel is burned to generate steam is used for the greenhouse effect. Explanation will be given as gas.

  In this embodiment, in the facility for supplying the steam generated by a plurality of boilers that burn various fuels to the consumer, the steam required by the consumer is supplied, and the generation of carbon dioxide generated by the generation of the steam The system which controls each boiler so that the quantity or the charge of steam may become below the predetermined value designated by the consumer is realized.

  FIG. 1 is a diagram showing a schematic configuration of a steam supply amount control system according to an embodiment of the present invention. As shown in the figure, the steam supply amount control system 1 generates steam and supplies the steam A to the consumer A and the consumer B, and the demand of the consumer A who uses the supplied steam. The consumer facility 3 and the consumer facility 4 of the consumer B, and the amount of carbon dioxide generated by the generation of steam is less than or equal to a predetermined value designated by the consumer A and the consumer B, and is required by the consumer It comprises a management facility 5 that controls the steam supply system 2 to supply the amount of steam.

  The steam supply system 2 includes a coal boiler 20 that generates steam by burning coal, a heavy oil boiler 21 that generates steam by burning heavy oil, and an LNG boiler that generates steam by burning LNG (liquefied natural gas). 22, and supply pipes for supplying steam from the boilers 20, 21, 22 to the first steam utilization device 30 are arranged. Similarly, a supply pipe for supplying steam from each boiler 20, 21, 22 to the second steam utilization device 31 is also provided.

  Each boiler 20, 21, 22 is provided with a steam amount adjusting function (not shown), thereby adjusting the amount of steam supplied by each boiler 20, 21, 22, and mixing the steam. It supplies to the steam utilization apparatuses 30 and 31. Furthermore, each boiler 20, 21, 22 can communicate with the steam supply amount control server 40, and adjusts the amount of steam supplied based on the set value from the steam supply amount control server 40.

  Each of these boilers 20, 21, and 22 has various characteristics. One of the characteristics is the amount of steam that can be supplied per unit time (hereinafter referred to as "steam supply capacity"). Is “ton / hour (t / h)”). As other characteristics, there are various characteristics according to the fuel used, such as a characteristic of carbon dioxide emission generated as a secondary effect during combustion, and a steam fee set according to the cost of the fuel.

  Next, the customer's facility will be described. The consumer facility 3 of the consumer A is connected to a steam utilization apparatus 30 that uses steam supplied from the steam supply system 2 and a steam supply amount control server 40 via the Internet 10 that is a communication means. An information terminal 32 is provided. Similarly, the consumer facility 4 of the consumer B is connected to the steam supply device 31 that uses steam supplied from the steam supply system 2 and the steam supply control server 40 via the Internet 10 so as to be communicable. An information terminal 33 is provided.

  Each of the steam utilization devices 30 and 31 is a device that utilizes the steam supplied from the steam supply system 2, and is, for example, a heat exchanger or a steam turbine that uses steam as a heat source.

  Each information terminal 32 and 33 is an information communication device having various functions of a general computer, receives various data from the steam supply amount control server 40, and displays it. Further, the steam request amount and the carbon dioxide upper limit value are transmitted to the steam supply amount control server 40 via the Internet 10 which is a communication means.

  Here, the steam requirement (energy requirement) refers to data indicating the amount of steam required by the consumer. This required steam amount may be the amount of steam required for an appropriate period, for example, one month or one day. Furthermore, you may set the vapor | steam request amount for every time slot | zone, for example, daytime and nighttime.

  Further, the carbon dioxide upper limit value (greenhouse gas upper limit value) refers to data indicating the upper limit value of carbon dioxide emission generated when each boiler 20, 21, 22 generates steam corresponding to the required steam amount. .

  These steam request amounts and the carbon dioxide upper limit value are transmitted to the steam supply amount control server 40 to discharge carbon dioxide in an amount lower than the carbon dioxide upper limit value and to generate steam in the amount indicated in the steam request amount. Used to control the boilers 20, 21 and 22.

  Next, the management facility 5 will be described. The management facility 5 is provided with a steam supply amount control server 40. The steam supply amount control server 40 controls the steam supply amount of each boiler 20, 21, 22 based on the steam request amount received from the consumers A, B and the carbon dioxide upper limit value.

  More specifically, the steam supply amount control server 40 is an information communication device having various functions of a general computer. Based on the steam request amount received from each of the information terminals 32 and 33 and the carbon dioxide upper limit value, Steam supply amount calculation means 41 (energy supply amount calculation means) for calculating a set value for adjusting the amount of steam supplied from each boiler 20, 21, 22 to the consumers A and B, and based on this set value, Steam supply amount control means 42 (energy supply amount control means) for controlling the boilers 20, 21, 22 and the amount of carbon dioxide generated when steam supplied to the consumer is generated, and the steam charge to the consumer Presenting means 43 for presenting is provided.

  The steam supply amount calculation means 41 calculates a set value of each boiler 20, 21, 22 to supply the amount of steam indicated by the steam request amount acquired from each consumer A, B. At this time, when such an amount of steam is generated by each of the boilers 20, 21, and 22, the amount of carbon dioxide generated as a secondary is not more than the upper limit value of carbon dioxide acquired from each consumer A, B. The set value is calculated. Specific calculation of the set value will be described later.

  Moreover, when there are a plurality of consumers as in this embodiment, the amount of steam that can be used by each consumer is determined in advance for each boiler 20, 21, 22. This amount of usable steam is referred to as a steam quota (energy quota). For example, assuming that 30% of the steam supply capacity of the coal boiler 20 is the steam allocation amount of the customer A and the remaining 70% is the steam allocation amount of the customer B, the customer A is 30% of the steam supply capacity of the coal boiler 20. % Of steam up to% can be used. As a result, each consumer A, B can reliably use the amount of steam that he / she needs within the range not exceeding the steam allocation amount, regardless of the amount of steam supplied to other consumers. . In addition, about each boiler 20,21,22, when the sum total of the steam allocation amount of each consumer A and B exceeds the steam supply capacity of each boiler 20,21,22, the operator supplying each steam and each demand Adjustments are made so as not to exceed the steam generation capacity between the persons A and B, and an appropriate steam allocation amount is determined.

  Based on the set value calculated by the steam supply amount calculation means 41, the steam supply amount control means 42 is connected to the consumer A of each boiler 20, 21, 22 via the steam amount adjustment function of each boiler 20, 21, 22. , B change the supply amount of steam.

  The presenting means 43 presents the generated amount of carbon dioxide accompanying the generation of steam and the steam fee to the consumer. Thereby, the consumer can recognize the influence on the environment by knowing the amount of carbon dioxide generated with his / her own steam consumption. In addition, future steam use plans can be examined with reference to this presentation.

  Next, in the steam supply amount control system 1 according to the present embodiment, a series of operations for controlling the boilers 20, 21, and 22 to meet the demands of the consumers A and B will be described.

First, Table 1 illustrates various characteristics of the boilers 20, 21, and 22. The steam rate is the rate of steam per ton (the unit is “yen / t”), and the carbon dioxide emission is the CO2 emitted by combustion of fuel when generating steam per ton. The amount of carbon emission is shown (the unit is “t-CO ₂ / t”. Further, the steam condition assumes a temperature of 400 degrees and a pressure of about 4 MPa).

  As illustrated in Table 1, the consumers A and B can select the cheapest steam, but generally, when a fuel capable of generating cheap steam is used, more carbon dioxide tends to be emitted. . For this reason, when consumers A and B simply select cheap steam, it will indirectly contribute to the emission of more carbon dioxide, and it is not possible to make a steam usage plan considering only the steam fee. This will increase carbon dioxide emissions.

  FIG. 2 is a diagram showing a processing flow of the steam supply amount control system according to the embodiment of the present invention.

  As shown in the figure, first, in each of the information terminals 32 and 33, the consumers A and B determine the steam allocation amount for each boiler 20, 21, and 22 and transmit it to the steam supply amount control server 40 (S1). For example, Table 2 illustrates the steam allocation determined by each consumer.

  That is, the consumer A can use a maximum of 80 tons of steam per hour for the coal boiler 20 (57,600 tons of steam per month (30 days for one month can be used)), and heavy oil. It is shown that steam of up to 20t per hour (14,400t per month) can be used for boiler 21 and up to 50t per hour (36,000t per month) for LNG boiler 22. Yes. Further, it is shown that when steam from each boiler 20, 21, 22 is used to the maximum, steam of 150t per hour (108,000t per month) can be used.

  Next, each consumer inputs the steam request amount and the carbon dioxide upper limit value to each information terminal 32, 33, and transmits them to the steam supply amount control server 40 (S2). Table 3 exemplifies the steam demand of each consumer A and B and the upper limit of carbon dioxide.

  Next, the steam supply amount control server 40 performs calculation processing of the set value of the steam supply amount of each boiler 20, 21, 22 mainly by the steam supply amount calculation means 41 (S3). Specifically, each boiler 20, 21, by using a known optimization method so that the steam demand of each consumer A, B is satisfied and the amount of carbon dioxide emission and the steam charge become desired values. The amount of steam supplied to each of the 22 consumers A and B is calculated. For example, the amount of steam supplied to the consumer A satisfies the steam request amount, and the carbon dioxide emission generated when generating the steam amount indicated by the steam request amount is equal to or less than the carbon dioxide upper limit value. When doing so, linear programming can be used as an optimization method.

  Specifically, as the objective function, a calculation formula for obtaining the carbon dioxide emission amount generated when the steam amount indicated by the steam demand amount to the consumer A is generated is used. Except for special cases, the demand of the customer is to minimize the carbon dioxide emission, so that the calculation is performed to minimize the objective function.

  Further, as the constraint condition expression, a calculation expression is used in which the carbon dioxide emission generated when generating the steam supply amount to the consumer A of each boiler 20, 21, 22 is equal to or less than the carbon dioxide upper limit value. Further, a calculation formula is used in which the amount of steam supplied from each boiler 20, 21, 22 to the consumer A satisfies the amount of steam indicated by the required steam amount. In addition, a calculation formula is used in which the amount of steam supplied from each boiler 20, 21, 22 satisfies a non-negative condition and is equal to or less than the steam allocation amount of each boiler 20, 21, 22 of the consumer A.

  By using a linear programming method based on these objective functions and constraint equation, it is possible to obtain a set value of the amount of steam supplied to the consumer A of each boiler 20, 21, 22. The same calculation is performed for the consumer B.

  Next, based on the calculated set value, the steam supply amount control means 42 mainly performs control processing of the steam supply amount of each boiler 20, 21, 22 (S4). Specifically, these set values are transmitted to the steam amount adjusting function of each boiler 20, 21, and 22 to control the supply amount of steam.

  Note that the steam supply amount control server 40 is mainly composed of the presentation means 43 and supplies the steam satisfying the conditions desired by the consumer. It transmits to each information terminal 32 and 33 (S5), and each information terminal 32 and 33 displays these received information (S6).

  Thereby, the consumer can recognize the influence on the environment by knowing the emission amount of carbon dioxide indirectly contributed with the consumption of his own steam. In addition, future steam consumption plans can be examined with reference to this presentation.

  As a result of the series of processes as described above, the consumers A and B are supplied with the required amount of steam, and the amount of carbon dioxide emission accompanying the generation of such steam is less than or equal to the upper limit of carbon dioxide. Steam can be used.

  In addition, as above-mentioned, although it controlled so that the steam per month from each boiler 20,21,22 was supplied to each consumer A, B, it is not limited to this. For example, the boilers 20, 21, and 22 may be controlled so that steam is supplied to the consumers A and B based on the required steam amount shown in Table 3 for each time zone such as daytime and nighttime. In this case, the set values of the boilers 20, 21, and 22 are calculated and controlled using the linear programming method described above for each time zone such as daytime and nighttime. Thereby, the supply amount of steam can be controlled more finely.

  Furthermore, the amount of steam required for each of the consumers A and B is supplied, and the amount of carbon dioxide emission associated with the generation of such steam is set to the carbon dioxide upper limit value or less, and the steam rate at that time is minimized. The steam may be supplied to each consumer A and B so that

  In this case, for example, using a steam charge (one of the characteristics of each boiler 20, 21, 22 and the charge per unit amount of steam) which is one of the characteristics of each boiler 20, 21, 22, An objective function that minimizes the charge on the steam supplied to the consumer, and the amount of carbon dioxide generated due to the generation of such steam is below the upper limit of carbon dioxide, and from each boiler 20, 21, 22 to the consumer Of the constraint condition that the amount of steam supplied to the steam satisfies the steam requirement and the amount of steam supplied to each boiler 20, 21, 22 satisfy the non-negative condition, and the boilers 20, 21, and 22 of the consumer Constraining conditional expressions that are less than or equal to the steam allocation amount. Based on these objective functions and constraint equations, a set value of the amount of steam supplied to the consumers A and B of the boilers 20, 21, and 22 is calculated using a method such as linear programming, and this setting is performed. Each boiler 20, 21, 22 is controlled based on the value.

  Moreover, although steam of the quantity which is less than a carbon dioxide upper limit is supplied to each consumer A and B, you may make it supply the quantity of steam which is less than a steam charge upper limit. Here, the steam charge upper limit value refers to data indicating the upper limit of the steam charge generated by each boiler 20, 21, 22. The consumer can use the steam below the desired charge by specifying this steam charge upper limit value.

  In this case, as described above, the steam allocation amount is determined in advance for each consumer, and the consumer transmits the steam request amount and the steam charge upper limit value to the steam supply amount control server 40 via the information terminal. The steam supply amount control server 40 uses the linear programming method described above, and uses the steam charge that is one of the characteristics of the boilers 20, 21, and 22 as the objective function, according to the steam amount indicated by the steam request amount. Since the demand of the customer is to minimize this charge except in special cases, the calculation is performed to minimize this objective function.

  In addition, as the constraint condition expression, a calculation formula is used in which the steam charge according to the steam amount indicated by the steam request amount is equal to or less than the steam charge upper limit value. Further, a calculation formula is used so that the amount of steam supplied from each boiler 20, 21, 22 to the consumer satisfies the amount of steam indicated by the required steam amount. In addition, a calculation formula is used so that the amount of steam supplied by each boiler 20, 21, 22 satisfies a non-negative condition and is equal to or less than the steam allocation amount of each boiler 20, 20, 22, of the consumer. The set value of the supply amount of steam to the consumers A and B of 21 and 22 is calculated. Thereafter, similarly, each boiler 20, 21, 22 is controlled based on this set value to supply a desired amount of steam to each consumer.

  Of course, in the case described above, the required steam amount for each time zone may be satisfied. Moreover, while supplying the quantity of each required steam to each consumer A and B, the charge of this steam shall be below a steam charge upper limit, and the amount of carbon dioxide emission accompanying the generation of steam at that time is Steam may be supplied to each consumer A and B so as to be minimized.

  In this case, for example, an objective function that minimizes the carbon dioxide emission associated with the generation of steam to be supplied to the consumer using the carbon dioxide emission that is one of the characteristics of the boilers 20, 21, and 22; , Such a constraint condition formula that the steam charge is below the steam charge upper limit value, and the amount of steam supplied from each boiler 20, 21, 22 to the consumer satisfies the steam requirement, and each boiler 20, 21, 22 The constraint condition formula that the amount of steam to be supplied satisfies the non-negative condition and is equal to or less than the steam allocation amount of each of the boilers 20, 21, and 22 of the consumer. Based on these objective functions and constraint conditions, the installed value of the amount of steam supplied to the consumers A, B of each boiler 20, 21, 22 is calculated using a method such as linear programming, and this set value The boilers 20, 21, 22 are controlled based on the above.

  As described above, the steam supply amount control system 1 according to the present embodiment is such that the conditions desired by each consumer, for example, the carbon dioxide emission amount is lower than the carbon dioxide upper limit value, and the steam charge is lower than the steam charge upper limit value. In order to satisfy the various conditions and supply the steam required by each consumer, it is possible to supply the steam in consideration of the environment while suppressing the emission of carbon dioxide as much as possible.

  The present invention can be used in industries that supply energy from each energy supply source in a facility having a plurality of energy supply sources.

It is a figure which shows schematic structure of the energy supply amount control system which concerns on embodiment of this invention. It is a figure which shows the flow of a process of the energy supply amount control system which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steam supply control system 2 Steam supply system 3, 4 Consumer facilities 5 Management facility 10 Internet 20 Coal boiler 21 Heavy oil boiler 22 LNG boiler 30, 31 Steam utilization apparatus 32, 33 Information terminal 40 Steam supply control server 41 Steam supply Volume calculation means 42 Steam supply amount control means

Claims (7)

An energy supply amount control system for controlling the amount of energy supplied to consumers from a plurality of energy supply sources that generate energy by burning fuel and emit greenhouse gases,
A communication means for exchanging information via a predetermined communication path;
An energy requirement amount indicating an amount of energy required by the consumer, and a greenhouse gas upper limit value indicating an upper limit value of a greenhouse gas discharged with generation of energy corresponding to the energy requirement amount. An information terminal to transmit via,
An energy supply amount control server that receives the energy requirement amount and the greenhouse gas upper limit value transmitted by the information terminal, and has an energy supply amount calculation means and an energy supply amount control means;
An energy supply source capable of adjusting the amount of energy supplied to the consumer based on a set value given by the energy supply amount control server;
The energy supply amount control server includes:
Stores information representing energy supply capacity per unit time of the energy supply source, information representing charges per unit amount of energy, and information representing greenhouse gas emissions emitted when generating energy per unit amount And
The energy supply amount calculating means includes:
Create an objective function for determining the amount of greenhouse gas emissions generated when generating the amount of energy from the information representing the greenhouse gas emissions and the energy requirement amount,
The greenhouse effect generated when each energy supply source generates the amount of energy supplied to the consumer from the information representing the greenhouse gas emission amount, the energy requirement amount, and the greenhouse gas upper limit value Create a constraint equation that makes the gas emission below the upper limit of the greenhouse gas,
Create a constraint equation that satisfies the amount of energy indicated by the energy requirement amount of energy supplied to the consumer from each energy supply source,
Solve the objective function and constraint equation by linear programming so that the amount of greenhouse gas emissions is minimized, and calculate the set value of energy supply from each energy supply source to the consumer,
The energy supply amount control means includes:
Transmitting the set value calculated by the energy supply amount calculating means to the energy supply source;
Furthermore, each said energy supply source is provided so that energy can be supplied to several consumers,
The energy supply amount control server stores an energy allocation amount that is an upper limit of energy from each energy supply source that can be used by each consumer.
The energy supply amount control system, wherein the energy supply amount calculation means creates a constraint condition expression that sets an amount of energy supplied to the consumer to be equal to or less than the energy allocation amount . In the energy supply amount control system according to claim 1,
The energy supply amount calculating means creates an objective function for obtaining a charge for energy supplied to a consumer from information representing a charge per unit amount of energy,
An energy supply amount control system, wherein the set value is calculated by solving an objective function and a constraint equation by linear programming so that a charge of energy supplied to the consumer is minimized . An energy supply amount control system for controlling the amount of energy supplied to consumers from a plurality of energy supply sources that generate energy by burning fuel and emit greenhouse gases,
A communication means for exchanging information via a predetermined communication path;
An information terminal that transmits an energy request amount indicating an amount of energy required by the consumer, and an energy charge upper limit value indicating an upper limit value of an energy charge corresponding to the energy request amount, via the communication means;
An energy supply amount control server that receives the energy requirement amount and the energy charge upper limit value transmitted by the information terminal, and has an energy supply amount calculation means and an energy supply amount control means;
An energy supply source capable of adjusting the amount of energy supplied to the consumer based on a set value given by the energy supply amount control server;
The energy supply amount control server includes:
Stores information representing energy supply capacity per unit time of the energy supply source, information representing charges per unit amount of energy, and information representing greenhouse gas emissions emitted when generating energy per unit amount And
The energy supply amount calculating means includes:
Create an objective function for obtaining an energy charge according to the amount of energy from the information indicating the charge per unit amount of energy and the energy requirement amount,
From the information representing the charge per unit amount of energy, the energy request amount, and the energy charge upper limit value, the energy charge according to the amount of energy indicated by the energy request amount is equal to or less than the energy charge upper limit value. Create a constraint expression to
Create a constraint equation that satisfies the amount of energy indicated by the energy requirement amount of energy supplied to the consumer from each energy supply source,
An objective function and a constraint equation are solved by linear programming so that the energy charge according to the energy requirement is minimized, and a set value of energy supply from each energy supply source to the consumer is calculated,
The energy supply amount control means includes:
Transmitting the set value calculated by the energy supply amount calculating means to the energy supply source;
Furthermore, each said energy supply source is provided so that energy can be supplied to several consumers,
The energy supply amount control server stores an energy allocation amount that is an upper limit of energy from each energy supply source that can be used by each consumer.
The energy supply amount control system, wherein the energy supply amount calculation means creates a constraint condition expression that sets an amount of energy supplied to the consumer to be equal to or less than the energy allocation amount . In the energy supply amount control system according to claim 3,
The energy supply amount calculation means obtains the amount of greenhouse gas emissions accompanying the generation of energy to be supplied to the consumer from information representing the amount of greenhouse gas emissions emitted when generating energy per unit amount. Create an objective function
An energy supply amount, wherein the set value is calculated by solving an objective function and a constraint equation by a linear programming method so that a greenhouse gas emission amount associated with generation of energy supplied to the consumer is minimized. Control system. In the energy supply amount control system according to any one of claims 1 to 4 ,
Further comprising presentation means for transmitting greenhouse gas emissions associated with generation of energy to be supplied to the consumer and energy charges to the information terminal;
The energy supply amount control system , wherein the information terminal displays a greenhouse gas emission amount and an energy charge . In the energy supply amount control system according to any one of claims 1 to 5 ,
The energy supply control system according to claim 1, wherein the energy is steam generated by burning fuel in a boiler. In the energy supply amount control system according to any one of claims 1 to 6 ,
The greenhouse gas is carbon dioxide contained in exhaust gas discharged when fuel is burned in a boiler.

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