U.S. patent application number 16/764568 was filed with the patent office on 2020-12-10 for system operator side computer, power generation operator side computer, power system, control method, and program.
The applicant listed for this patent is Mitsubishi Hitachi Power Systems, Ltd.. Invention is credited to Naoyuki NAGAFUCHI.
Application Number | 20200389025 16/764568 |
Document ID | / |
Family ID | 1000005088757 |
Filed Date | 2020-12-10 |
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United States Patent
Application |
20200389025 |
Kind Code |
A1 |
NAGAFUCHI; Naoyuki |
December 10, 2020 |
System Operator Side Computer, Power Generation Operator Side
Computer, Power System, Control Method, And Program
Abstract
A system operator side computer includes: a supply amount
acquirer configured to acquire a maximum suppliable power amount
from a power generation operator at a predetermined time later; a
demand specifier configured to specify a power demand at the
predetermined time later; and a shortage amount calculator
configured to calculate a power shortage amount based on the power
demand and the maximum suppliable power amount.
Inventors: |
NAGAFUCHI; Naoyuki;
(Yokohama-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Mitsubishi Hitachi Power Systems, Ltd. |
Yokohama-shi, Kanagawa |
|
JP |
|
|
Family ID: |
1000005088757 |
Appl. No.: |
16/764568 |
Filed: |
November 19, 2018 |
PCT Filed: |
November 19, 2018 |
PCT NO: |
PCT/JP2018/042707 |
371 Date: |
May 15, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H02J 2203/20 20200101;
H02J 3/003 20200101; G06Q 50/06 20130101; H02J 3/004 20200101 |
International
Class: |
H02J 3/00 20060101
H02J003/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 20, 2017 |
JP |
2017-222706 |
Claims
1. A system operator side computer comprising: a supply amount
acquirer configured to acquire a maximum suppliable power amount
from a power generation operator at a predetermined time later; a
demand specifier configured to specify a power demand at the
predetermined time later; and a shortage amount calculator
configured to calculate a power shortage amount based on the power
demand and the maximum suppliable power amount.
2. The system operator side computer according to claim 1, wherein
the supply amount acquirer is configured to acquire the maximum
suppliable power amount specified based on weather from the power
generation operator, and wherein the demand specifier is configured
to specify the power demand based on the weather.
3. The system operator side computer according to claim 1, further
comprising: a demand response unit configured to transmit a power
shortage amount with respect to a requested power amount and an
incentive with respect to the power shortage amount to a request
source of the requested power amount when the requested power
amount is not suppliable.
4. A power generation operator side computer comprising: a request
acquirer configured to acquire a request for a maximum suppliable
power amount from a system operator at a predetermined time later;
a supply amount specifier configured to calculate the maximum
suppliable power amount at the predetermined time later; and a
supply amount notifier configured to notify the system operator of
the calculated maximum suppliable power amount.
5. The power generation operator side computer according to claim
4, wherein the supply amount specifier is configured to calculate
the maximum suppliable power amount based on profit and loss when
an amount of generated power is increased.
6. The power generation operator side computer according to claim
4, further comprising: a demand response unit configured to
transmit a power shortage amount with respect to a requested power
amount and an incentive with respect to the power shortage amount
to a request source of the requested power amount when the
requested power amount is not suppliable.
7. A power system comprising: a system operator side computer; and
a power generation operator side computer, wherein the system
operator side computer includes a supply amount acquirer configured
to acquire a maximum suppliable power amount from a power
generation operator at a predetermined time later, a demand
specifier configured to specify a power demand at the predetermined
time later, and a shortage amount calculator configured to
calculate a power shortage amount based on the power demand and the
maximum suppliable power amount, and wherein the power generation
operator side computer includes a request acquirer configured to
acquire a request for the maximum suppliable power amount from a
system operator at the predetermined time later, a supply amount
specifier configured to calculate the maximum suppliable power
amount at the predetermined time later, and a supply amount
notifier configured to notify the system operator of the calculated
maximum suppliable power amount.
8. A control method by a system operator side computer, the method
comprising: acquiring a maximum suppliable power amount from a
power generation operator at a predetermined time later; specifying
a power demand at the predetermined time later; and calculating a
power shortage amount based on the power demand and the maximum
suppliable power amount.
9. A control method by a power generation operator side computer,
the method comprising: acquiring a request for a maximum suppliable
power amount from a system operator at a predetermined time later;
calculating the maximum suppliable power amount at the
predetermined time later; and notifying the system operator of the
calculated maximum suppliable power amount.
10. A control method by a power system, the method comprising:
acquiring a maximum suppliable power amount from a power generation
operator at a predetermined time later; specifying a power demand
at the predetermined time later; calculating a power shortage
amount based on the power demand and the maximum suppliable power
amount; acquiring a request for the maximum suppliable power amount
from a system operator at the predetermined time later; calculating
the maximum suppliable power amount at the predetermined time
later; and notifying the system operator of the calculated maximum
suppliable power amount.
11. A non-transitory computer-readable medium that stores a program
causing a system operator side computer to perform: acquiring a
maximum suppliable power amount from a power generation operator at
a predetermined time later; specifying a power demand at the
predetermined time later; and calculating a power shortage amount
based on the power demand and the maximum suppliable power
amount.
12. A non-transitory computer-readable medium that stores a program
causing a power generation operator side computer to perform:
acquiring a request for a maximum suppliable power amount from a
system operator at a predetermined time later; calculating the
maximum suppliable power amount at the predetermined time later;
and notifying the system operator of the calculated maximum
suppliable power amount.
Description
TECHNICAL FIELD
[0001] The present invention relates to a system operator side
computer, a power generation operator side computer, a power
system, a control method, and a program.
[0002] Priority is claimed on Japanese Patent Application No.
2017-222706, filed Nov. 20, 2017, the content of which is
incorporated herein by reference.
BACKGROUND ART
[0003] In power generation systems, power generated by various
methods is supplied to electric power systems. As one of the power
supplied to the electric power systems, power generated using
renewable energy can be exemplified.
[0004] As a related technology, Patent Literature 1 discloses a
technology for predicting a power demand and a power generation
amount from weather data and determining a supply-demand
balance.
[0005] As a related technology, Patent Literature 2 discloses a
technology for predicting a power demand and calculating a power
generation amount (a demand response amount) for reducing
consumption at the time of a power shortage by using weather
data.
CITATION LIST
Patent Literature
[Patent Literature 1]
Japanese Unexamined Patent Application, First Publication No.
2015-008588
[Patent Literature 2]
Japanese Unexamined Patent Application, First Publication No.
2016-077051
SUMMARY OF INVENTION
Technical Problem
[0006] Incidentally, as demand response known as a policy of
reducing a power consumption amount at the time of a power
shortage, a reduction in power consumption by consumers
corresponding to the power shortage is requested and incentives to
increase or decrease the power consumption is provided. In order to
perform the demand response appropriately, it is necessary to
accurately specify a maximum suppliable power amount.
[0007] Therefore, in a power system, a technology capable of
accurately specifying the maximum suppliable power amount is
requested.
[0008] To solve the foregoing problem, an objective of the present
invention is to provide a system operator side computer, a power
generation operator side computer, a power system, a control
method, and a program.
Solution to Problem
[0009] According to a first aspect of the present invention, a
system operator side computer includes: a supply amount acquirer
configured to acquire a maximum suppliable power amount from a
power generation operator at a predetermined time later; a demand
specifier configured to specify a power demand at the predetermined
time later; and a shortage amount calculator configured to
calculate a power shortage amount based on the power demand and the
maximum suppliable power amount.
[0010] According to a second aspect of the present invention, in
the system operator side computer according to the first aspect,
the shortage amount calculator may be configured to calculate the
shortage power amount based on weather.
[0011] According to a third aspect of the present invention, the
system operator side computer according to the first or second
aspect may further include a demand response unit configured to
transmit a power shortage amount with respect to a required power
amount and an incentive with respect to the power shortage amount
to a request source of the requested power amount when the
requested power amount is not suppliable.
[0012] According to a fourth aspect of the present invention, a
power generation operator side computer includes: a request
acquirer configured to acquire a request for a maximum suppliable
power amount from a system operator at a predetermined time later;
a supply amount specifier configured to calculate the maximum
suppliable power amount at the predetermined time later; and a
supply amount notifier configured to notify the system operator of
the calculated maximum suppliable power amount.
[0013] According to a fifth aspect of the present invention, in the
power generation operator side computer according to the fourth
aspect, the supply amount specifier may be configured to calculate
the maximum suppliable power amount based on profit and loss when
an amount of generated power is increased.
[0014] According to a sixth aspect of the present invention, the
power generation operator side computer according to the fourth or
fifth aspect may further include a demand response unit configured
to transmit a power shortage amount with respect to a requested
power amount and an incentive with respect to the power shortage
amount to a request source of the requested power amount when the
requested power amount is not suppliable.
[0015] According to a seventh aspect of the present invention, a
power system includes a system operator side computer and a power
generation operator side computer. The system operator side
computer includes a supply amount acquirer configured to acquire a
maximum suppliable power amount from a power generation operator at
a predetermined time later, a demand specifier configured to
specify a power demand at the predetermined time later, and a
shortage amount calculator configured to calculate a power shortage
amount based on the power demand and the maximum suppliable power
amount. The power generation operator side computer includes a
request acquirer configured to acquire a request for the maximum
suppliable power amount from a system operator at the predetermined
time later, a supply amount specifier configured to calculate the
maximum suppliable power amount at the predetermined time later,
and a supply amount notifier configured to notify the system
operator of the calculated maximum suppliable power amount.
[0016] According to an eighth aspect of the present invention,
there is provided a control method by a system operator side
computer. The method includes: acquiring a maximum suppliable power
amount from a power generation operator at a predetermined time
later; specifying a power demand at the predetermined time later;
and calculating a power shortage amount based on the power demand
and the maximum suppliable power amount.
[0017] According to a ninth aspect of the present invention, there
is provided a control method by a power generation operator side
computer. The method includes: acquiring a request for a maximum
suppliable power amount from a system operator at a predetermined
time later; calculating the maximum suppliable power amount at the
predetermined time later; and notifying the system operator of the
calculated maximum suppliable power amount.
[0018] According to a tenth aspect of the present invention, there
is provided a control method by a power system. The method
includes: acquiring a maximum suppliable power amount from a power
generation operator at a predetermined time later; specifying a
power demand at the predetermined time later; calculating a power
shortage amount based on the power demand and the maximum
suppliable power amount; acquiring a request for the maximum
suppliable power amount from a system operator at the predetermined
time later; calculating the maximum suppliable power amount at the
predetermined time later; and notifying the system operator of the
calculated maximum suppliable power amount.
[0019] According to an eleventh aspect of the present invention, a
program causes a system operator side computer to perform:
acquiring a maximum suppliable power amount from a power generation
operator at a predetermined time later; specifying a power demand
at the predetermined time later; and calculating a power shortage
amount based on the power demand and the maximum suppliable power
amount.
[0020] According to a twelfth aspect of the present invention, a
program causes a power generation operator side computer to
perform: acquiring a request for a maximum suppliable power amount
from a system operator at a predetermined time later; calculating
the maximum suppliable power amount at the predetermined time
later; and notifying the system operator of the calculated maximum
suppliable power amount.
Advantageous Effects of Invention
[0021] A system operator side computer, a power generation operator
side computer, a power system, a control method, and a program
according to embodiments of the present invention can accurately
specify a suppliable maximum power amount in the power system.
BRIEF DESCRIPTION OF DRAWINGS
[0022] FIG. 1 is a diagram illustrating a configuration of a power
system according to an embodiment of the present invention.
[0023] FIG. 2 is a diagram illustrating a configuration of a system
operator side computer according to the embodiment of the present
invention.
[0024] FIG. 3 is a diagram illustrating a configuration of a power
generation operator side computer according to the embodiment of
the present invention.
[0025] FIG. 4 is a diagram illustrating a process flow of the power
system according to the embodiment of the present invention.
[0026] FIG. 5 is a schematic block diagram illustrating a
configuration of a computer according to at least one
embodiment.
DESCRIPTION OF EMBODIMENTS
Embodiment
[0027] Hereinafter, an embodiment will be described in detail with
reference to the drawings.
[0028] A configuration of a power system 1 according to an
embodiment of the present invention will be described.
[0029] The power system 1 is a system that predicts a power amount
that can be supplied to consumers based on information regarding
the weather (including a temperature, an atmospheric pressure, a
humidity, and a rainfall amount) and controls supply of power to
the consumers. The power system 1 is a system that requests a power
generation operator to generate power corresponding to a shortage
when an amount of power supplied to consumers is insufficient, and
suppresses an amount of power consumption by consumers, that is,
performs demand response when the amount of power supplied to
consumers is insufficient even though an amount of generated power
is increased in response to the request.
[0030] As illustrated in FIG. 1, the power system 1 according to an
embodiment of the present invention includes a load 10, a first
power supply device 20 (an example of a power generation device), a
second power supply device 30 (an example of a power generation
device), a system operator side computer 40, and a power generation
operator side computer 50.
[0031] The load 10 is a device that is used by a consumer and
consumes power. The load 10 is, for example, a household electric
appliance used in one or more ordinary homes.
[0032] In the embodiment of the present invention, a manager that
manages power supplied to the load 10 is referred to as a "system
operator." The system operator manages, for example, power supplied
in units of the loads 10 connected to the smart grid SG.
[0033] The first power supply device 20 is a power supply device of
which an amount of generated power varies depending on weather. The
first power supply device 20 is, for example, a device that
supplies power generated using renewable energy such as solar
energy, wind energy, or hydroelectric energy to the load 10.
[0034] The first power supply device 20 is a device that is owned
by at least one of a consumer and the system operator.
[0035] The second power supply device 30 is a device that can
control an amount of generated power irrespective of weather and is
a device that can supply predetermined generated power to the load
10 and increase or decrease the power supplied to the load 10 with
reference to the predetermined power. The second power supply
device 30 is a device that is owned by a power generation operator,
is, for example, a device that supplies power generated by such as
thermal power generation using a fossil fuel, and is specifically a
device that supplies power generated using a gas turbine. A normal
time in an embodiment of the present invention is a state in which
power generated by the first power supply device 20 and the second
power supply device 30 is supplied to the load 10 and power
supplied to the load 10 by the second power supply device 30 can be
increased or decreased.
[0036] The system operator side computer 40 is a computer that
transmits a power shortage amount to the power generation operator
side computer 50 at a normal time when power to be supplied to the
load 10 is predicted to be insufficient.
[0037] As illustrated in FIG. 2, the system operator side computer
40 includes a weather predictor 401, a power generation amount
predictor 402, a demand specifier 403, a supply amount acquirer
404, a shortage determiner 405, a shortage amount calculator 406,
and a demand response unit 407.
[0038] The weather predictor 401 acquires weather information
indicating a prediction of the weather at a predetermined time
later from a database DB or the like of a company providing the
weather information, for example, via a communication line NW such
as the Internet. The phrase "at the predetermined time later" is,
for example, after 1 hour, after 30 minutes, after 10 minutes,
after 5 minutes, or the like.
[0039] The power generation amount predictor 402 predicts an amount
of generated power of the first power supply device 20 at the
predetermined time later based on the weather information acquired
by the weather predictor 401. Specifically, for example, the power
generation amount predictor 402 predicts an amount of generated
power of the first power supply device 20 at the predetermined time
later based on the weather acquired by the weather predictor 401
and past results of the amount of generated power, such as an
amount of light received according to weather.
[0040] The demand specifier 403 specifies a power demand at the
predetermined time later. For example, the demand specifier 403
specifies the power demand at the predetermined time later based on
a past result of an amount of power consumption and the weather
acquired by the weather predictor 401, such as working of an air
conditioner according to temperature.
[0041] When the power supplied to the load 10 at the predetermined
time later is predicted to be insufficient at a normal time, the
supply amount acquirer 404 transmits a request for a maximum
suppliable power amount which can be supplied at the predetermined
time later to the power generation operator side computer 50. At
this time, the supply amount acquirer 404 transmits the request for
the maximum suppliable power amount which can be supplied at the
predetermined time later and simultaneously transmits information
regarding a fee corresponding to an increase in the supplied power.
The supply amount acquirer 404 acquires the maximum suppliable
power amount at the predetermined time later from the power
generation operator.
[0042] The shortage determiner 405 determines whether a power
demand at the predetermined time later is greater than the maximum
suppliable power amount at the predetermined time later.
[0043] Subsequently, when the power demand at the predetermined
time later is greater than the maximum suppliable power amount at
the predetermined time later, the shortage amount calculator 406
calculates a difference between the power demand at the
predetermined time later and a total sum of an amount of power
generated by the first power supply device 20 at the predetermined
time later and the maximum suppliable power amount at the
predetermined time later as a power shortage amount.
[0044] When the received maximum suppliable power amount is less
than an amount of power necessary in the load 10, the demand
response unit 407 transmits a request for demand response
(providing an incentive along with a request for reducing an amount
of power consumption at the time of power shortage) to each
consumer.
[0045] The power generation operator side computer 50 is a computer
that determines whether to generate an amount of power
corresponding to the power shortage amount transmitted from the
system operator side computer 40 and transmits a determination
result to the system operator side computer 40.
[0046] As illustrated in FIG. 3, the power generation operator side
computer 50 includes a request acquirer 501, a supply amount
specifier 502, and a supply amount notifier 503.
[0047] The request acquirer 501 acquires a request for the maximum
suppliable power amount at the predetermined time later from the
system operator.
[0048] The supply amount specifier 502 calculates the maximum
suppliable power amount at the predetermined time later.
[0049] Specifically, the supply amount specifier 502 calculates how
much a residual lifetime of the second power supply device 30 will
decrease when the amount of generated power is increased, and
calculates a cost (for example, an increase in a cost required to
exchange components, a decrease in a profit occurring with a
reduction in a driving opportunity accompanied by exchange of
components, or the like) when the number of maintenances occurring
due to the decrease of the residual lifetime increases or
maintenance is performed due to the decrease of the residual
lifetime during a periodic inspection period. The supply amount
specifier 502 calculates how much a profit is obtained with an
amount of generated power corresponding to the increase when the
amount of generated power is increased. The supply amount specifier
502 calculates how much a profit is obtained with regard to a
plurality of amounts of generated power by setting a possible
amount of generated power as an upper limit. Then, the supply
amount specifier 502 sets, for example, an amount of generated
power with which a maximum profit can be obtained among the amounts
of generated power in which the profit is greater than a loss
caused due to a maintenance cost as the maximum suppliable power
amount. The supply amount specifier 502 calculates a current
suppliable power amount (zero in the embodiment of the present
invention) as the maximum suppliable power amount at the
predetermined time later when there is no amount of generated power
in which the profit is greater than the loss caused due to the
maintenance cost.
[0050] The supply amount notifier 503 notifies the system operator
of the maximum suppliable power amount at the predetermined time
later calculated by the supply amount specifier 502 by transmitting
the maximum suppliable power amount to the system operator side
computer 40.
[0051] Next, a process of the power system 1 according to an
embodiment of the present invention will be described with
reference to FIG. 4.
[0052] The weather predictor 401 acquires weather information
indicating prediction of weather at the predetermined time later
from a database DB or the like of a company providing the weather
information via, for example, the communication line NW such as the
Internet (step S1).
[0053] The power generation amount predictor 402 predicts an amount
of power generated by the first power supply device 20 at the
predetermined time later based on the weather information acquired
by the weather predictor 401 (step S2).
[0054] The demand specifier 403 specifies the power demand at the
predetermined time later (step S3).
[0055] The supply amount acquirer 404 predicts whether the power
supplied to the load 10 at the predetermined time later is
insufficient at a normal time (step S4). Specifically, the supply
amount acquirer 404 determines that the power supplied to the load
10 at the predetermined time later is insufficient when the amount
of generated power at the predetermined time later predicted by the
power generation amount predictor 402 is less than the power demand
at the predetermined time later specified by the demand specifier
403. The supply amount acquirer 404 determines that the power
supplied to the load 10 at the predetermined time later is
sufficient when the amount of generated power at the predetermined
time later predicted by the power generation amount predictor 402
is greater than the power demand at the predetermined time
later.
[0056] The supply amount acquirer 404 returns the process to step
S1 when the power supplied to the load 10 at the predetermined time
later is predicted to be sufficient at the normal time (NO in step
S4).
[0057] When the power supplied to the load 10 at the predetermined
time later is predicted to be insufficient at the normal time (YES
in step S4), the supply amount acquirer 404 transmits a request for
the maximum suppliable power amount which can be supplied at the
predetermined time later to the power generation operator side
computer 50 (step S5). At this time, the supply amount acquirer 404
simultaneously transmits the request for the maximum suppliable
power amount which can be supplied at the predetermined time later
and information regarding a fee corresponding to an increase in the
supplied power.
[0058] The request acquirer 501 receives an inquiry about the
maximum suppliable power amount which can be supplied at the
predetermined time later (a request for the maximum suppliable
power amount at the predetermined time later) from the system
operator side computer 40 (step S6).
[0059] The supply amount specifier 502 calculates the maximum
suppliable power amount at the predetermined time later (step
S7).
[0060] The supply amount notifier 503 transmits the maximum
suppliable power amount at the predetermined time later calculated
by the supply amount specifier 502 to the system operator side
computer 40 (step S8).
[0061] The supply amount acquirer 404 receives the maximum
suppliable power amount at the predetermined time later from the
power generation operator (step S9). When a total sum of the
received maximum suppliable power amounts exceeds an amount of
actually necessary power, for example, the supply amount acquirer
404 may determine a priority such as an order in which a response
becomes earlier (a reception order) or an order in which a power
fee becomes lower and obtain an amount of necessary power.
[0062] The shortage determiner 405 determines whether the power
demand at the predetermined time later is greater than the maximum
suppliable power amount at the predetermined time later (step S10).
Specifically, when the shortage determiner 405 determines that the
power demand at the predetermined time later specified by the
demand specifier 403 is equal to or less than the maximum
suppliable power amount at the predetermined time later calculated
by the supply amount specifier 502 (NO in step S10), the shortage
determiner 405 determines that the power supplied to the load 10 at
the predetermined time later is sufficient and returns the process
to step S1.
[0063] Conversely, when the shortage determiner 405 determines that
the power demand at the predetermined time later specified by the
demand specifier 403 is greater than the maximum suppliable power
amount at the predetermined time later calculated by the supply
amount specifier 502 (YES in step S10), the shortage amount
calculator 406 calculates a difference between the power demand at
the predetermined time later and the total amount of the amount of
power generated by the first power supply device 20 at the
predetermined time later and the maximum suppliable power amount at
the predetermined time later as a power shortage amount (step
S11).
[0064] The demand response unit 407 requests demand response based
on the amount of power shortage calculated by the shortage amount
calculator 406, that is, notifies the consumers of reduction
amounts of the loads 10 and an incentive which could be obtained
when the loads 10 are reduced (step S12).
[0065] The consumers notified of the request for the demand
response determine whether to receive the request for the demand
response, that is, determine whether to obtain the incentive by
reducing the loads 10. Then, the consumers perform a process in
accordance with a determination result.
[0066] The power system 1 according to the embodiment of the
present invention has been described above.
[0067] The system operator side computer 40 included in the power
system 1 calculates the difference between the power demand at the
predetermined time later and the total sum of the amount of power
generated by the first power supply device 20 at the predetermined
time later and the maximum suppliable power amount at the
predetermined time later as the power shortage amount.
[0068] The power generation operator side computer 50 included in
the power system 1 acquires a request for the maximum suppliable
power amount at the predetermined time later, calculates the
maximum suppliable power amount, and notifies the system operator
of the calculated maximum suppliable power amount.
[0069] In this way, the power system 1 including the system
operator side computer 40 can specify a power shortage amount
necessary to accurately specify the maximum suppliable power
amount. The power system 1 including the power generation operator
side computer 50 can accurately specify the maximum suppliable
power amount.
[0070] The power system 1 including the system operator side
computer 40 and the power generation operator side computer 50 can
appropriately request demand response (for suppressing the amount
of power consumption at the time of power shortage) to each
consumer based on the power shortage amount and can determine a
suppliable power amount in accordance with a profit of each of the
system operator and the power generation operator.
[0071] In the embodiment of the present invention, the first power
supply device 20 is the device owned by at least one of the
consumer and the system operator, as described above. In another
embodiment of the present invention, however, the first power
supply device 20 may be a device owned by the power generation
operator.
[0072] In an embodiment of the present invention, the second power
supply device 30 may be a device that can supply predetermined
power to the load 10 at a normal time and may be a device that can
increase or decrease power to be supplied to the load 10 with
reference to the predetermined power. In another embodiment of the
present invention, the second power supply device 30 may be a
device that does not supply power to the load 10 at a normal time
and may be device that does not supply power to the load 10 or
supplies the power and increase or decrease the supply amount.
[0073] In the embodiment of the present invention, the second power
supply device 30 is, for example, the device that supplies power
generated by such as thermal power generation using a fossil fuel,
as described above. However, in still another embodiment of the
present invention, the second power supply device 30 may be a
device that includes, for example, a device supplying power
generated using renewable energy such as solar energy, wind energy,
or hydroelectric energy. When the second power supply device 30 is
a device that supplies power generated using renewable energy such
as solar energy, wind energy, or hydroelectric energy, the power
generation operator side computer 50 may predict an amount of
generated power based on weather.
[0074] In the embodiment of the present invention, the supply
amount acquirer 404 transmits the information regarding the fee
corresponding to an increase in the supplied power to the power
generation operator side computer 50 along with the request for the
maximum suppliable power amount which can be supplied at the
predetermined time later, as described above. In still another
embodiment of the present invention, however, a fee corresponding
to an increase in power supplied may be suggested by the power
generation operator side computer 50 (for example, the supply
amount notifier 503) and the maximum suppliable power amount may be
transmitted to the system operator side computer 40 by using the
suggested fee as a condition.
[0075] Herein, the power generation operator side computer 50 is
not limited to one power generation operator side computer 50, and
may be the power generation operator side computer 50 owned by each
of a plurality of power generation operators. When the number of
power generation operator side computers 50 of transmission
destinations is plural, the supply amount acquirer 404 may transmit
a request for the maximum suppliable power amount which can be
supplied at the predetermined time later and may simultaneously
transmit an intention to bid for a fee corresponding to an increase
in the supplied power. When the bid is made, the supply amount
acquirer 404 suggests, for example, an amount of generated power of
a bidding target and a fee (corresponding to a lowest contract
price of a general bid) per unit power for the amount of generated
power.
[0076] Even in the case of the suppliable power amount within the
initial contract range, the power generation operator cannot
increase power to be supplied to the load 10 in some cases since
the amount of power supplied to another load has already increased.
In this case, the demand response unit 407 may request demand
response to the system operator, that is, instead of not increasing
the power to be supplied despite being within the contract power,
may request the system operator side computer 40 to provide an
incentive for the non-increase.
[0077] An order of the processes in the embodiment of the present
invention may be switched within a range in which the processes are
appropriately performed.
[0078] The storage unit and each of the other storage devices in
the embodiment of the present invention may be included anywhere
within a range in which information is appropriately transmitted
and received. The plurality of storage units and the other storage
devices may be located within the range in which information is
appropriately transmitted and received so that data can be
distributed and stored.
[0079] The embodiments of the present invention have been
described, but the power system 1, the system operator side
computer 40, the power generation operator side computer 50, and
the other control devices described above may have an internal
computer system. The procedure of the above-described processes is
stored in a computer-readable recording medium in a program form,
and a computer reads and executes the program to perform the
processes. A specific example of the computer is as follows.
[0080] FIG. 5 is a schematic block diagram illustrating a
configuration of a computer according to at least one
embodiment.
[0081] As illustrated in FIG. 5, a computer 5 includes a CPU 6, a
main memory 7, a storage 8, and an interface 9.
[0082] For example, the power system 1, the system operator side
computer 40, the power generation operator side computer 50, and
the other control devices described above are each mounted on the
computer 5. An operation of each of the described-above processors
is stored in the storage 8 in a program form. The CPU 6 reads the
program from the storage 8, loads the program on the main memory 7,
and performs the processes in accordance with the program. The CPU
6 guarantees a storage area corresponding to each of the
above-described storage units in the main memory 7 in accordance
with the program.
[0083] Examples of the storage 8 include a hard disk drive (HDD), a
solid-state drive (SSD), a magnetic disk, an electro-magnetic disk,
a compact disc read-only memory (CD-ROM), a digital versatile disc
read-only memory (DVD-ROM), a semiconductor memory, or the like.
The storage 8 may be an internal medium directly connected to a bus
of the computer 5 or may be an external medium connected to the
computer 5 via the interface 9 or a communication line. When the
program is delivered to the computer 5 via the communication line,
the computer 5 loads the delivered program on the main memory 7 to
perform the processes. According to at least one embodiment, the
storage 8 is a non-transitory storage medium.
[0084] The program may realize some of the above-described
functions. Further, the program may be a file, a so-called
differential file (differential program), which can be realized by
combining the above-described functions with a program previously
recorded on a computer system.
[0085] Several embodiments of the present invention have been
described, but these embodiments are merely exemplary and do not
limit the scope of the present invention. Various additions,
omissions, or substitutions of these embodiments may be made within
the scope of the present invention departing from the gist of the
present invention.
INDUSTRIAL APPLICABILITY
[0086] A system operator side computer, a power generation operator
side computer, a power system, a control method, and a program
according to embodiments of the present invention can accurately
specify a suppliable maximum power amount in the power system.
REFERENCE SIGNS LIST
[0087] 1 Power system [0088] 5 Computer [0089] 6 CPU [0090] 7 Main
memory [0091] 8 Storage [0092] 9 Interface [0093] 10 Load [0094] 20
First power supply device [0095] 30 Second power supply device
[0096] 40 System operator side computer [0097] 50 Power generation
operator side computer [0098] 401 Weather predictor [0099] 402
Power generation amount predictor [0100] 403 Demand specifier
[0101] 404 Supply amount acquirer [0102] 405 Shortage determiner
[0103] 406 Shortage amount calculator [0104] 407 Demand response
unit [0105] 501 Request acquirer [0106] 502 Supply amount specifier
[0107] 503 Supply amount notifier [0108] DB Weather information
[0109] SG Smart grid
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