ELECTRIC/THERMAL ENERGY STORAGE SCHEDULE OPTIMIZING DEVICE, OPTIMIZING METHOD AND OPTIMIZING PROGRAM

• US 20140094980A1
• Filed: 01/10/2013
• Published: 04/03/2014
• Est. Priority Date: 02/27/2012
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Murayama, Dai, Takagi, Yasuo, Saito, Masaaki, Mitsumoto, Kenji, Iino, Yutaka
• Granted Patent: US 10,042,332 B2
• Time in Patent Office: Days
• US Class Current: 700/291
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 2005/0067 with photovoltaic panels
• CPC Class Codes: G05B 13/026 using a predictor
• CPC Class Codes: G05D 23/1923 using thermal energy, the cost of which varies in function of time
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 3/28 Arrangements for balancing of the load in a network by storage of energy
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 20/14 Combined heat and power generation [CHP]
• CPC Class Codes: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/244 the home appliances being or involving heating ventilating and air conditioning [HVAC] units

Abstract

A device includes a setting unit setting a control target value for setting an activation, an operation, and a deactivation at a next day for control-target devices including an energy supplying device, an energy consuming device consuming energy, and an energy storage device storing energy, a predicting unit that sets a predicted value of the consumed energy of the energy consuming device at the next day based on a comparison between the control setting value set by the setting unit and a past control setting value, a start-stop optimizing unit that creates a start-stop schedule obtained by optimizing the start-stop schedule of the control-target device at the next day by an evaluation index, and a status-quantity optimizing unit that creates an electric/thermal energy storing schedule obtained by optimizing the status quantity of the control-target device to be activated by a predetermined evaluation index.

Claims

1. An electric/thermal energy storage schedule optimizing device comprising:

a setting unit that sets a control setting value for setting an activation, an operation, and a deactivation during a future predetermined time period for at least one of control-target devices that are an energy supplying device including a device which changes an energy supply level depending on a weather condition, an energy consuming device which consumes energy, and an energy storage device which stores energy;

a predicting unit that sets a predicted value of consumed energy of the energy consuming device or supplying energy of the energy supplying device during the future predetermined time period based on a comparison between the control setting value set by the setting unit and a past control setting value;

a start-stop optimizing unit that creates a start-stop schedule obtained by optimizing a start-stop schedule of the control-target device during the predetermined time period based on the predicted value and a characteristic of the control-target device in view of a predetermined evaluation index; and

a status-quantity optimizing unit that creates an electric/thermal energy storing schedule obtained by optimizing a status quantity of the control-target device to be activated based on the start-stop schedule and the characteristic of the control-target device in view of the predetermined evaluation index.

2. The electric/thermal energy storage schedule optimizing device according to claim 1, wherein the start-stop optimizing unit comprises:

an activation-preference-order setting unit that sets an activation preference order of the control-target device in accordance with the consumed energy or the supplying energy based on the characteristic of the control-target device;

an activation-boundary-condition setting unit that sets an activation boundary condition which is a condition for activating each control-target device based on the characteristic of the control-target device and the activation preference order; and

a deactivation-boundary-condition setting unit that sets a deactivation boundary condition which is a condition for deactivating each control-target device based on the characteristic of the control-target device and the activation preference order.

3. The electric/thermal energy storage schedule optimizing device according to claim 2, wherein the deactivation-boundary-condition setting unit sets the deactivation boundary condition to be smaller than the activation boundary condition within a range where a device with the high activation preference order does not become a lower-limit output.

4. The electric/thermal energy storage schedule optimizing device according to any one of claims 1 to 3, further comprising:

an object accomplishment determining unit that determines whether or not the electric/thermal energy storing schedule accomplishes a predetermined target value;

a control-setting-value output unit that outputs the control setting value based on the electric/thermal energy storing schedule when the object accomplishment determining unit determines that the target value is accomplished; and

an adjusting unit that adjusts the control setting value set by the setting unit when the object accomplishment determining unit determines that the target value is not accomplished.

5. The electric/thermal energy storage schedule optimizing device according to any one of claims 1 to 4, further comprising an inquiring unit that inquires to an exterior whether or not to accept the control setting value based on the electrical/thermal energy storing schedule when the object accomplishment determining unit determines that the object is not accomplished.

6. The electric/thermal energy storage schedule optimizing device according to any one of claims 1 to 5, further comprising:

a re-scheduling necessity determining unit that determines whether or not a difference between the predicted value by the predicting unit and a value of actual consumed energy or supplying energy, or, a difference between the control setting value and the actual status quantity of the control-target device exceeds a predetermined threshold; and

an adjusting unit that adjusts the control setting value when the re-scheduling necessity determining unit determines that the difference exceeds the predetermined threshold.

7. The electric/thermal energy storage schedule optimizing device according to any one of claims 1 to 6, wherein the evaluation index is a minimization of either one of or both of the consumed energy and a cost.

8. The electric/thermal energy storage schedule optimizing device according to claim 7, wherein

the control-target device includes devices that produce cold water and hot water, and

the evaluation index is a cold water production unit price and a hot water production unit price or cold water production energy and hot water production energy.

9. The electric/thermal energy storage schedule optimizing device according to any one of claims 1 to 8, wherein

the energy consuming device includes an illuminator, and

the control setting value used for a comparison by the predicting unit is an illuminance.

10. The electric/thermal energy storage schedule optimizing device according to any one of claims 1 to 8, wherein

the energy consuming device includes an air-conditioner, and

the control setting value used for a comparison by the predicting unit is a PMV value.

11. An electric/thermal energy storage schedule optimizing method that causes a computer to execute:

a setting process for setting a control setting value that sets an activation, an operation, and a deactivation during a future predetermined time period for at least one of control-target devices that are an energy supplying device including a device which changes an energy supply level depending on a weather condition, an energy consuming device which consumes energy, and an energy storage device which stores energy;

a predicting process for setting a predicted value of consumed energy of the energy consuming device or supplying energy of the energy supplying device during the future predetermined time period based on a comparison between the control setting value set through the setting process and a past control setting value;

a start-stop optimizing process for creating a start-stop schedule obtained by optimizing a start-stop schedule of the control-target device during the predetermined time period based on the predicted value and a characteristic of the control-target device in view of a predetermined evaluation index; and

a status-quantity optimizing process for creating an electric/thermal energy storing schedule obtained by optimizing a status quantity of the control-target device to be activated based on the start-stop schedule and the characteristic of the control-target device in view of the predetermined evaluation index.

12. The electric/thermal energy storage schedule optimizing method according to claim 11, wherein the start-stop optimizing process comprises:

an activation-preference-order setting process for setting an activation preference order of the control-target device in accordance with the consumed energy or the supplying energy based on the characteristic of the control-target device;

an activation-boundary-condition setting process for setting an activation boundary condition which is a condition for activating each control-target device based on the characteristic of the control-target device and the activation preference order; and

a deactivation-boundary-condition setting process for setting a deactivation boundary condition which is a condition for deactivating each control-target device based on the characteristic of the control-target device and the activation preference order.

13. An electric/thermal energy storage schedule optimizing program that causes a computer to execute:

a setting process for setting a control setting value that sets an activation, an operation, and a deactivation during a future predetermined time period for at least one of control-target devices that are an energy supplying device including a device which changes an energy supply level depending on a weather condition, an energy consuming device which consumes energy, and an energy storage device which stores energy;

a predicting process for setting a predicted value of consumed energy of the energy consuming device or supplying energy of the energy supplying device during the future predetermined time period based on a comparison between the control setting value set through the setting process and a past control setting value;

a start-stop optimizing process for creating a start-stop schedule obtained by optimizing a start-stop schedule of the control-target device during the predetermined time period based on the predicted value and a characteristic of the control-target device in view of a predetermined evaluation index; and

a status-quantity optimizing process for creating an electric/thermal energy storing schedule obtained by optimizing a status quantity of the control-target device to be activated based on the start-stop schedule and the characteristic of the control-target device in view of the predetermined evaluation index.

14. The electric/thermal energy storage schedule optimizing program according to claim 13, wherein the start-stop optimizing process comprises:

an activation-preference-order setting process for setting an activation preference order of the control-target device in accordance with the consumed energy or the supplying energy based on the characteristic of the control-target device;

an activation-boundary-condition setting process for setting an activation boundary condition which is a condition for activating each control-target device based on the characteristic of the control-target device and the activation preference order; and

a deactivation-boundary-condition setting process for setting a deactivation boundary condition which is a condition for deactivating each control-target device based on the characteristic of the control-target device and the activation preference order.