Control system of power storage station, power storage station, and control method of power storage station

Abstract

To provide a control system of a power storage station which can effectively use a site of the power storage station and does not increase construction costs, the power storage station, and a control method of the power storage station.SOLUTION: A control system of a power storage station is constituted by arranging a plurality of storage battery containers having storage batteries, and cooling mechanisms for removing heat accompanying charge / discharge of the storage batteries at a site and is equipped with: a sound information input unit which accepts sound information from a plurality of first noise sensors installed at a boundary of the site and sound information from second noise sensors installed around the storage battery containers; a sound information storage unit which stores the sound information from the first noise sensors and the second noise sensors; and a storage battery control unit which compares a noise value based on the sound information stored in the sound information storage unit with a noise regulation value, and suppresses or stops the charge / discharge of the storage batteries when the noise value exceeds the noise regulation value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a control system for a power storage plant, a power storage plant, and a control method for a power storage plant. [Background technology]

[0002] Generally, the business model of an energy storage station is to set up a large number of battery containers on the site, charge large amounts of electricity when electricity rates are low, and discharge it when electricity rates are high, and ideal locations are those with relatively high population densities.

[0003] On the other hand, battery containers are equipped with cooling mechanisms to suppress temperature rises during battery charging and discharging, and the noise generated by these cooling mechanisms becomes noise. For this reason, in areas with noise restrictions or where there are requests from surrounding residents, measures must be taken such as installing soundproofing equipment such as soundproof walls and buildings, or reducing the number of battery containers installed, and in some cases construction may be abandoned due to profitability reasons. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5903645 Summary of the Invention [Problem to be solved by the invention]

[0005] As mentioned above, when building a power storage plant in a noise-regulated area, it is necessary to take measures to reduce noise, such as reducing the number of battery containers to be installed, installing soundproof walls, or placing the battery containers inside a building. This has led to issues such as an ineffective use of the power storage plant's land and increased construction costs.

[0006] The present invention has been made to solve the above-mentioned problems, and aims to provide a storage plant control system, a storage plant, and a storage plant control method that enable effective use of the storage plant site and do not result in an increase in construction costs.

[0007] A control system for a power storage plant according to an embodiment is a control system for a power storage plant in which a plurality of battery containers, each having a storage battery and a cooling mechanism for removing heat associated with charging and discharging the storage battery, are arranged on a site, and the control system includes a sound information input unit that receives sound information from a plurality of first noise sensors installed on the boundary of the site and sound information from second noise sensors installed around the storage battery containers, a sound information storage unit that stores the sound information from the first noise sensors and the second noise sensors, and a battery control unit that compares a noise value based on the sound information stored in the sound information storage unit with a noise regulation value, and suppresses or stops charging and discharging of the storage battery if the noise value exceeds the noise regulation value.

[0008] The power storage plant of one embodiment is a power storage plant in which a plurality of battery containers, each having a storage battery and a cooling mechanism for removing heat associated with charging and discharging the storage battery, are arranged on a site, and the power storage plant has a control system including: a plurality of first noise sensors installed on the boundary of the site; second noise sensors installed around the storage battery containers; a sound information storage unit that stores sound information from the first noise sensors and the second noise sensors; and a battery control unit that compares a noise value based on the sound information stored in the sound information storage unit with a noise regulation value, and suppresses or stops charging and discharging of the storage battery if the noise value exceeds the noise regulation value.

[0009] A control method for a power storage plant according to an embodiment is a control method for a power storage plant in which a plurality of battery containers, each having a storage battery and a cooling mechanism for removing heat associated with charging and discharging the storage battery, are arranged on a site, and the control method includes a sound information input step of receiving sound information from a plurality of first noise sensors installed on the boundary of the site and sound information from a second noise sensor installed around the storage battery container; a sound information storage step of storing the sound information from the first noise sensors and the second noise sensor; and a battery control step of comparing a noise value based on the sound information stored in the sound information storage unit with a noise regulation value, and suppressing or stopping charging and discharging of the storage battery if the noise value exceeds the noise regulation value. [Effects of the Invention]

[0010] According to the embodiments of the present invention, it is possible to provide a power storage plant control system, a power storage plant, and a power storage plant control method that enable effective use of the site of the power storage plant and do not result in an increase in construction costs. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram illustrating a schematic configuration of a power storage station according to an embodiment. [Figure 2] 1 is a diagram schematically showing a schematic configuration of a main part of a control system for a power storage station according to an embodiment; [Figure 3] 10 is a graph for explaining an example of the relationship between noise and charging rate. [Figure 4] 10 is a graph for explaining another example of the relationship between noise and charging rate. [Figure 5] 10 is a graph for explaining another example of the relationship between noise and charging rate. [Figure 6] 10 is a graph for explaining another example of the relationship between noise and charging rate. [Figure 7] FIG. 1 is a diagram illustrating a schematic configuration of an example of a storage battery container according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a power storage plant control system, a power storage plant, and a power storage plant control method according to embodiments will be described with reference to the drawings.

[0013] FIG. 1 is a diagram showing a schematic configuration of the entire power storage station according to the embodiment, and FIG. 2 is a diagram showing a schematic configuration of a main part of a control system for the power storage station according to the embodiment.

[0014] As shown in Fig. 1, the power storage station is installed within a site, and the dashed dotted line in Fig. 1 indicates a site boundary 4 that is the boundary between the site and the outside. The power storage station of this embodiment is designed with noise reduction in mind.

[0015] A plurality of battery containers 5 are provided within the site of the power storage station (inside the site boundary 4), and these battery containers 5 are connected to a power receiving and transforming facility 9 via electric cables 6. The power receiving and transforming facility 9 is connected to a power transmission facility (electric power company) 10 via electric cables 6. Furthermore, each battery container 5 is connected to a power storage station monitoring device 8 and a noise control device 3 via communication cables 2.

[0016] The power storage station has multiple noise sensors 1a installed along its site boundary 4. Multiple noise sensors 1b are also installed around the battery container 5. These noise sensors 1a and 1b are connected to a noise control device 3 via a communication cable 2. Sound information collected by the noise sensors 1a and 1b is transmitted to the noise control device 3 via this communication cable 2.

[0017] Noise regulations at power storage plants are regulated with respect to noise that leaks outside the plant, and are based on noise measured by noise sensor 1a at the site boundary 4, which is the boundary between the plant and the outside. However, for example, if there is a road outside the site boundary 4, the noise of vehicles traveling on that road is also measured by noise sensor 1a. For this reason, it is also necessary to refer to the noise measured by noise sensor 1b installed around the battery container 5.

[0018] That is, for example, even if the noise measured by noise sensor 1a increases, if the noise measured by noise sensor 1b is low, it is highly likely that the noise is coming from outside. If the noise measured by noise sensor 1a increases and the noise measured by noise sensor 1b also increases, it is highly likely that the noise generated inside the power storage station is increasing. In this way, it is preferable to refer not only to the noise measured by noise sensor 1a at the site boundary 4, but also to the noise measured by noise sensor 1b installed around the battery container 5.

[0019] The noise control device 3 is connected to the battery container 5 and the power storage station monitoring device 8 via a communication cable 2, and has the function of issuing control commands for the batteries. The power storage station is also provided with a thermometer 7, and the noise control device 3 is connected to this thermometer 7 via the communication cable 2, so that it can collect the outside air temperature of the power storage station via the communication cable 2.

[0020] The power storage station monitoring device 8 has a function of controlling the state of charging electricity to the battery container 5 and discharging electricity from the battery container 5. In this case, the power storage station monitoring device 8 receives a command from the noise control device 3 and controls the charging electricity to the battery container 5 and discharging electricity from the battery container 5. Note that the communication cable 2 in the above configuration may be configured as a wireless communication device.

[0021] Next, the noise control device 3 will be described. FIG. 2 is a block diagram showing an example of the configuration of the noise control device 3. The noise control device 3 includes a sound information storage unit 31, a temperature storage unit 32, a charge / discharge storage unit 33, a battery control unit 34, and a charge / discharge control unit 35. These are interconnected by a communication cable 2. Sound information is input to the sound information storage unit 31 via a sound information input unit 31a that receives sound information from multiple noise sensors 1a, 1b. The sound information storage unit 31, the temperature storage unit 32, and the charge / discharge storage unit 33 are composed of various storage devices such as semiconductor memory and hard disks. The battery control unit 34 and the charge / discharge control unit 35 are composed of a computer, a program for controlling the computer, and the like.

[0022] The sound information storage unit 31 stores information about the sounds (noise) from the noise sensors 1a and 1b, the temperature storage unit 32 stores the temperature of the thermometer 7, and the charge / discharge storage unit 33 stores information about charging and discharging of the battery container 5. The battery control unit 34 has a function to determine whether the latest sound value recorded in the sound information storage unit 31 is below a separately defined limit value such as a noise regulation value, and has a function to send a command to the battery container 5 to suppress or stop charging / discharging if the value is above the limit value. It also has a function to store the temperature information and date and time of this state in the charge / discharge storage unit 33.

[0023] Fig. 3 is a graph showing an example of a state 331 (solid line) of charging and discharging the battery container 5 and an example of a value 311 (dashed line) of noise generated from the battery container 5. The example shown in Fig. 3 shows a state in which it is not necessary for the battery control unit 34 to suppress or stop charging and discharging the battery container 5. In other words, the example shown in Fig. 3 shows a case in which the noise value does not exceed the limit value when charging the battery container 5 or discharging from the battery container 5.

[0024] Fig. 4 shows a case where charging of the battery container 5 is restricted by the battery control unit 34. In the example shown in Fig. 4, the sound value 311 (broken line) exceeds the limit value when charging the battery container 5, so charging is restricted to prevent the sound value from exceeding the regulation value.

[0025] The charge / discharge control unit 35 has a function of comparing the latest temperature value (air temperature measured by the thermometer 7) recorded in the temperature memory unit 32 with the temperature value recorded in the charge / discharge memory unit 33 (the temperature at which charging / discharging was suppressed or stopped in the past), and if the latest temperature value exceeds the temperature recorded in the charge / discharge memory unit 33, sending a command to suppress or stop charging / discharging to the battery container 5. The charge / discharge control unit 35 also has a function of visualizing the battery control information recorded in the charge / discharge memory unit 33.

[0026] Fig. 5 shows an example of a case where the charge / discharge control unit 35 needs to suppress or stop charging / discharging to the storage battery container 5. The example shown in Fig. 5 shows a state in which, during discharge from the storage battery container 5, the sound value 311 (dashed line) exceeds the limit value when the value of temperature information 321 (dashed line) exceeds 28°C.

[0027] Fig. 6 shows an example in which the charge / discharge control unit 35 suppresses discharge from the battery container 5. In the example shown in Fig. 5, the sound value 311 (dashed line) during discharge from the battery container 5 exceeds the limit value when the outside temperature is 28°C, as indicated by the temperature information 321 (dash line). This data is recorded in the charge / discharge storage unit 33, and therefore the example shown in Fig. 6 shows a case in which the charge / discharge control unit 35 stops discharging from the battery container 5 when the outside temperature exceeds 28°C and starts discharging again when the outside temperature falls below 28°C. This prevents the sound value 311 (dashed line) from exceeding the limit value.

[0028] Generally, power storage plants are required to operate to meet the planned charge / discharge amount on an hourly basis, or are combined with other power sources (such as renewable energy power generation facilities) to discharge electricity and compensate for the inability of other power sources to generate power as planned. Therefore, rather than suppressing or stopping the discharge of all battery containers 5, it is desirable to suppress or stop the discharge of some of the battery containers 5, thereby minimizing the difference from the target discharge amount. Furthermore, depending on the size and layout of the power storage plant site, there may be situations where the noise levels near some battery containers 5 approach the regulated value, while the noise levels near other battery containers 5 are still above the regulated value. Therefore, by having the noise control device 3 not suppress or stop the discharge of the battery containers 5 near the noise sensors 1a that are above the noise regulated value, it is possible to ensure a certain degree of the target discharge amount while complying with the noise regulations.

[0029] The noise control device 3 may be configured to have a function of detecting abnormal sounds that do not normally occur, for example, by sound frequency, based on sound information measured by a noise sensor 1b provided around the battery container 5. If an abnormal sound is detected, the noise control device 3 may suppress or stop charging and discharging of the battery container 5. Furthermore, because the occurrence of abnormal sounds may lead to a breakdown or future breakdown, the abnormal sounds may be transmitted to the power storage station monitoring device 8 as a breakdown prediction and recorded.

[0030] 7 shows an example of the internal configuration of a battery container 5 in blocks. The battery container 5 includes multiple batteries 51, a fan 52 as a cooling mechanism for the batteries, an electric motor 53, an air inlet 54, and an exhaust outlet 55. The battery container 5 also includes a battery container thermometer 56 that measures the internal temperature and a battery container exhaust thermometer 57 that measures the exhaust temperature.

[0031] Storing the temperature information from the battery container thermometer 56, the temperature information from the battery container exhaust thermometer 57, and the rotation speed information from the fan 52 or the electric motor 53 in the charge / discharge memory unit 33 enables more detailed control by the charge / discharge control unit 35. For example, based on this information, it is possible to control the charge / discharge of only one battery container 5 to suppress or stop its charge / discharge.

[0032] In the above embodiment, the monitoring of the power storage plant and the control of the storage batteries have been described as being performed by the noise control device 3 and the power storage plant monitoring device 8 installed in the power storage plant, but this is not limited thereto and the monitoring and control may be performed remotely from outside the premises of the power storage plant. It is common practice to remotely control a power storage plant, and some or all of the functions of receiving sound information from a noise sensor to monitor noise and controlling the charging and discharging of the storage batteries can be performed remotely.

[0033] Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, modifications, and combinations can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0034] 1a...Noise sensor, 1b...Noise sensor, 2...Communication cable, 3...Noise control device, 4...Site boundary, 5...Battery container, 6...Electric cable, 7...Thermometer, 8...Storage station monitoring device, 9...Substation equipment, 10...Power transmission equipment (electric power company), 31...Sound information memory unit, 31a...Sound information input unit, 32...Temperature memory unit, 33...Charge / discharge memory unit, 34...Battery control unit, 35...Charge / discharge control unit, 51...Battery, 52...Fan 52, 53...Electric motor, 54...Air intake port, 55...Exhaust port, 56...Battery container thermometer, 57...Battery container exhaust thermometer

Claims

1. A control system for a power storage station in which a plurality of storage battery containers, each having a storage battery and a cooling mechanism for removing heat caused by charging and discharging the storage battery, are arranged on a site, a sound information input unit that receives sound information from a plurality of first noise sensors installed at the boundary of the site and sound information from a second noise sensor installed around the storage battery container; a sound information storage unit that stores sound information from the first noise sensor and the second noise sensor; a battery control unit that compares a noise value based on the sound information stored in the sound information storage unit with a noise regulation value, and reduces or stops charging and discharging of the storage battery when the noise value exceeds the noise regulation value; A control system for a power storage station comprising:

2. The power storage station control system according to claim 1, A thermometer to measure the outside temperature; a temperature storage unit that stores temperature information relating to the outside air temperature from the thermometer; a charge / discharge memory unit that stores the relationship between past outside temperatures and noise levels; a charge / discharge control unit that suppresses or stops charging / discharging of the storage battery based on the relationship between the past outside air temperature and the noise level stored in the charge / discharge storage unit and the temperature information stored in the temperature storage unit; A control system for a power storage station comprising:

3. The control system for the power storage station according to claim 1 or 2, The storage battery control unit has a function of detecting abnormal noise from sound information from the second noise sensor, and when an abnormal noise is generated, suppresses or stops charging / discharging of the storage battery. Storage battery control system.

4. The control system for the power storage station according to claim 2, The charge / discharge memory unit temperature information from a battery container thermometer provided in the battery container; temperature information from a battery container exhaust gas thermometer that detects the temperature of exhaust gas exhausted from the battery container; and Information on the rotation speed of a fan or an electric motor for cooling the inside of the battery container; and Remember, The charge / discharge control unit suppresses or stops charging / discharging of the storage battery for one of the storage battery containers based on the information stored in the charge / discharge storage unit. Storage battery control system.

5. A power storage station in which a plurality of storage battery containers, each having a storage battery and a cooling mechanism for removing heat caused by charging and discharging the storage battery, are arranged on a site, A plurality of first noise sensors installed on the boundary of the site; a second noise sensor installed around the battery container; a sound information storage unit that stores sound information from the first noise sensor and the second noise sensor; a battery control unit that compares a noise value based on the sound information stored in the sound information storage unit with a noise regulation value, and reduces or stops charging and discharging of the storage battery when the noise value exceeds the noise regulation value; A power storage station having a power storage station control system including:

6. The storage station according to claim 5, The control system of the power storage station A thermometer to measure the outside temperature; a temperature storage unit that stores temperature information relating to the outside air temperature from the thermometer; a charge / discharge memory unit that stores the relationship between past outside temperatures and noise levels; a charge / discharge control unit that suppresses or stops charging / discharging of the storage battery based on the relationship between the past outside air temperature and the noise level stored in the charge / discharge storage unit and the temperature information stored in the temperature storage unit; A storage facility equipped with the above.

7. A control method for a power storage station in which a plurality of storage battery containers, each having a storage battery and a cooling mechanism for removing heat caused by charging and discharging the storage battery, are arranged on a site, the method comprising: a sound information input step of receiving sound information from a plurality of first noise sensors installed on a boundary of the site and sound information from a second noise sensor installed around the storage battery container; a sound information storage step of storing sound information from the first noise sensor and the second noise sensor; a battery control step of comparing a noise value based on the sound information stored in the sound information storage unit with a noise regulation value, and suppressing or stopping charging / discharging of the storage battery when the noise value exceeds the noise regulation value; A method for controlling a power storage station comprising:

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