Heat pump system energy management device

Patent metadata

Field	Value
Publication number	US-10006683-B2
Application number	US-201314379632-A
Country	US
Kind code	B2
Filing date	Feb 26, 2013
Priority date	Feb 27, 2012
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A management device manages plural heat pump systems to bring a total amount of energy consumed by the heat pump systems closer to a target value. The management device includes a request transmitting unit, a consumption information receiving unit, a database, and a learning unit. The request transmitting unit transmits requested values of energy consumption to each of the heat pump systems. The consumption information receiving unit receives actual values of energy consumption from each of the heat pump systems. The database stores response characteristics of consumers having each of the heat pump systems with respect to the requested values of energy consumption. The learning unit learns the response characteristics and reflects learning results based on past records of responses of each of the consumers with respect to the requested values of energy consumption in the database.

First claim

What is claimed is:

1. A system comprising:
a plurality of heat pump systems;
a plurality of CPUs, each CPU associated with one of the heat pump systems; and
a management device adapted to manage the plural heat pump systems to bring a total amount of energy consumed by the heat pump systems closer to a target value, the management device comprising:
a control unit including a processor configured to execute a stored program;
a communication interface; and
a database,
the control unit being configured to execute the stored program to
receive a total requested value of energy consumption as the target value from a higher-level energy management device via a communication network,
allocate requested energy consumption amounts and incentives to the heat pump systems based on the total requested value of energy consumption and based on response characteristics of consumers having the heat pump systems in order to satisfy the total requested value of energy consumption, each of the incentives being a monetary reward amount,
transmit individual consumption requests to each of the heat pump systems via the communication network, each of the individual consumption requests including the requested energy consumption amount and the incentive allocated to a different one of the heat pump systems,
receive actual values of energy consumption from each of the heat pump systems via the communication network, each of the actual values of energy consumption corresponding to one of the individual consumption requests, respectively, and
learn how each of the heat pump systems responds by conducting an analysis of the individual consumption requests and the actual values of energy consumption, and to update the response characteristics of the consumers to reflect results of the analysis; and

the database storing the response characteristics,
the response characteristics being correlations between the monetary reward amounts and actual amounts by which energy consumed by each of the heat pump systems was adjusted in response to the requested energy consumption amounts,
the control unit being configured to create a list of the heat pump systems arranged from a top of the list in descending order with respect to a degree to which each of the consumers has cooperated with the individual consumption requests, the degree being determined based on the response characteristic of each of the heat pump systems so that a value of the degree is larger for consumers who cooperated with the request to adjust energy consumption in return for a smaller monetary reward amount,
the control unit being configured to allocate the requested energy consumption amounts consecutively to the heat pump systems starting from the top of the list until the total requested value of energy consumption is satisfied,
the control unit being configured to transmit the allocated energy consumption amounts to the individual heat pump systems as additional individual consumption requests,
the CPUs of the heat pump systems being configured to create operation plans in response to the additional individual consumption requests and control the heat pump systems in accordance with the operation plans.

2. The system according to claim 1 , wherein
the control unit is further configured to learn the response characteristics by connecting the actual values of energy consumption with information relating to at least one of season, day of week, time period, and weather.

3. The system according to claim 2 , wherein
the response characteristics are mathematical models.

4. The system according to claim 2 , wherein
the control unit being configured to further receive energy pricing information from the higher-level energy management device.

5. The system according to claim 1 , wherein
the response characteristics are mathematical models.

6. The system according to claim 5 , wherein
the control unit being configured to further receive energy pricing information from the higher-level energy management device.

7. The system according to claim 5 , wherein
the mathematical model includes a sigmoid function having at least one coefficient, and
the control unit is configured to update the at least one coefficient based on the results of the analysis.

8. The system according to claim 1 , wherein
the control unit being configured to further receive energy pricing information from the higher-level energy management device.

9. The system according to claim 1 , wherein
the management device is an aggregator configured to be provided separately from both the higher level energy management device and the heat pump systems.

10. The system according to claim 1 , wherein
the management device is an aggregator configured to mediate between an electric power company and the consumers, the higher-level energy management device being possessed by the electric power company.

11. The system according to claim 1 , wherein
at an initial stage where the response characteristics have not yet been extracted, the control unit equally divides a total energy consumption adjustment amount needing to be allocated and a total allocatable monetary reward among the heat pump systems.

Assignees

• Daikin Ind Ltd

Inventors

• Kotake Masato
• Zheng Yi
• Yamaguchi Takahiro

Classifications

• H02J2105/42

  Home appliances · CPC title

• Y04S20/222

  Demand response systems, e.g. load shedding, peak shaving · CPC title

• F25B2600/00

  Control issues · CPC title

• Y02B70/3225

  Demand response systems, e.g. load shedding, peak shaving · CPC title

• Y04S20/244

  the home appliances being or involving heating ventilating and air conditioning [HVAC] units · CPC title