KR20170080326A - Controlling method for the ESS - Google Patents

Abstract

A control method of an energy storage device includes transmitting and receiving a device connected to a power conversion device to check a connection state between the power conversion device and the device; Operating the energy storage device when there is no abnormality in the checking of the connection status; And checking the operating state of the energy storage device. According to this configuration, the problem of the energy storage device can be prevented in advance by confirming the connection state and checking the operation state. And, the life of the energy storage device can be increased by operating the energy storage device in a steady state. And, the progress process is outputted through the user interface, so that the maintenance work can be easily performed.

Description

[0001] Controlling method for the ESS [0002]

The present invention relates to a control method of an energy storage device.

The present invention relates to an energy storage system (ESS) and a control method of an energy storage device capable of ensuring operational stability of configurations connected to the energy storage device.

The energy storage system is a system that stores the generated power in each link system including the power plant, substation and transmission line, and then uses the power selectively at the necessary time to enhance energy efficiency.

Using energy storage devices can level out electrical loads with large fluctuations in time and season. This can improve the overall load factor. In addition, the power generation cost can be lowered. In addition, it is possible to reduce the investment cost and operating cost required for the expansion of electric power facilities. In addition, it can lower the electricity bill and save energy.

These energy storage devices are installed in power generation, transmission, distribution, and customer in power system, and they are used for frequency regulation, generator output stabilization by using renewable energy, peak shaving, load leveling, And emergency power supply.

Energy storage devices are divided into physical energy storage and chemical energy storage depending on the storage method. Physical energy storage includes pumped storage, compressed air storage, and flywheel. Chemical storage includes lithium ion batteries, lead acid batteries, and Nas batteries.

Such an energy storage device discharges the charged electric power to supply electric power when necessary. This allows the energy storage device to supply power flexibly.

Meanwhile, in the conventional energy storage device, there is an inconvenience that the installer must check the state of the power cable and the communication cable for each component in order to check the steady state. Also, it is difficult to confirm whether the energy storage device is operating properly or whether the battery is charged and discharged properly.

For example, Japanese Patent Application No. 10-1468314 discloses a functional inspection system for an energy storage battery.

According to the above-described prior art, a separate testing device is provided for testing the function of a battery provided in the energy storage device. In order to manage and control the history of test data generated through the testing device, A terminal device is provided.

1 and 3 of Korean Patent No. 10-1468314

The present invention proposes a control method of an energy storage device capable of solving a safety problem that may occur when checking the connection state between the energy storage device and the devices connected to the energy storage device.

The present invention proposes a control method of an energy storage device that can solve the problem of increased time in checking the connection state between the energy storage device and the devices connected to the energy storage device.

The present invention proposes a control method of an energy storage device and an energy storage device that can simplify complicated maintenance work between devices connected to the energy storage device.

The control method of the energy storage device according to the present invention may include checking the connection state of the device connected to the power conversion device and checking the operation state of the energy storage device.

Also, checking the connection state of the device connected to the power conversion device may include checking the electrical connection state of the device connected to the power conversion device, and confirming the communication connection state.

Also, in checking the operating state of the energy storage device, it may include checking the charging state of the energy storage device and the device connected to the energy storage device, checking the discharge state, and checking the transmission state .

The control method of the energy storage device according to the present invention may include a user interface for checking the connection state of the device connected to the power conversion device and the external process for checking the operation state of the energy storage device .

According to the present invention, the problem of the energy storage device can be prevented in advance by confirming the connection state of the power inverter and confirming the operation state of the energy storage device.

According to the present invention, by confirming the normal operation state of the energy storage device and the device connected to the energy storage device, the life of the energy storage device can be increased.

According to the present invention, since the progressing process is outputted through the user interface, the user can easily perform the maintenance work.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram showing devices connected to an energy storage device and an energy storage device.
2 is a flow chart showing an operation flow of the test operation mode.
3 is a flowchart showing an operational flow of a step of confirming the connection state.
4 is a diagram illustrating a user interface provided to a user in the step of checking the connection status.
5 is a flowchart showing an operation flow of a step of confirming an operation state.
6 is a diagram showing a user interface provided to the user in the step of checking the operation state.
7 is a diagram illustrating a user interface provided when a user selects a progress window in FIG.
8 is a diagram illustrating a user interface provided to a user when one step of confirming an operation state is normally completed.
9 is a diagram showing a user interface provided to a user when one of the steps of confirming an operation state is detected as abnormal.
FIG. 10 is a diagram illustrating a user interface provided when a user selects a progress window in FIG.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, It will be easily understood that the present invention is not limited thereto.

The drawings attached to the following embodiments are not intended to limit the scope of the present invention to the extent that they are easily understood without departing from the spirit of the invention. And can be expressed in an exaggerated manner.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram showing devices connected to an energy storage device and an energy storage device.

Referring to FIG. 1, the energy storage device may include a battery 5 for storing energy. A power management module 4 for managing the battery 5 and a power management module 5 for managing power that converts power in accordance with the connection state between the power generation module 6 and the power system 7 and between the battery 5 and the load 8, A power management module 2 for managing the power of the battery management module 4 and an energy management module 1 for controlling the power management module 2. The power management module 2 includes a conversion device 1,

The power generation module 3, the power generation module 6, the battery 5, the power system 7, and the load 8 may be connected to the power conversion system 3. The load 8 may be a general assumption using power. The power system 7 may be, for example, a power generation facility for generating the electric power, a transmission line, and the like.

The power converter 3 may include a plurality of inverters and converters. For example, the connection between the power system 7 and the power conversion device 3 may include at least one of an inverter and a converter for converting power. In addition, the inverter and the converter can convert power generated in the power generation module 6. The inverter and the converter may be disposed at a connection portion between the power generation module 6 and the power system 7 and the battery 5 to convert power.

For example, the converter can convert the power output from the power generation module 6 into a DC suitable for internal processing of the energy storage device. The DC converted in the converter can be converted to AC in the inverter to be supplied to the power system or the load.

The power converter 3 includes a cable electrically or communicatively connected to the devices, a transformer for converting the voltage of the transmitted power, a circuit breaker for blocking unnecessary power movement, a measuring device for checking the state of the cable, and the like . The cable may be provided separately from a communication cable and a power cable. Alternatively, it may be provided as one power communication cable. The transformer, the breaker, and the meter may be provided as many as necessary. Further, it can be provided to each constituent device constituting the energy storage device as required. The spirit of the present invention is not limited to this configuration.

The power generation module 6 may include various generators such as wind, tidal, hydro, and geothermal power including a solar power generation module. For example, when the power generation module 6 is the solar power generation module, the power generation module may be provided as a solar cell array. The solar cell array may be provided by combining a plurality of solar cell modules. The solar cell module may connect a plurality of solar cells in series or in parallel. Then, solar energy can be converted into electric energy to generate a predetermined voltage and current. Thus, a solar cell array can absorb solar energy and convert it into electrical energy. When the power generation module is a wind power generation device, the power generation module may be provided as a wind turbine that converts wind energy into electric energy. Alternatively, when the power generation module is a tidal power generation device, the power generation module may be provided as a tidal turbine that converts the tidal energy into electric energy. However, the power generation module of this embodiment can be considered as a solar power generation module in general.

The battery 5 may be under the control of the battery management module 4. In detail, the battery management module 4 can check the charging / discharging state of the battery 5 or manage the battery. Alternatively, the battery management module 4 may be connected to the battery 5 and provided as one battery module. The spirit of the present invention is not limited to this configuration.

The battery 5 can be constructed in accordance with the capacity of a consumer. For example, the battery 5 may include a lithium ion battery (LiB), a lead acid battery, a sodium sulfur battery (NaS), a redox flow battery (RFB), a super capacitor, and the like. The battery 5 may be configured with a large number of cells according to the capacity of a customer. Also, the battery 5 may be a storage device built according to the capacity of a customer. For example, the storage device may include a flywheel, a compressed air storage system (CAES), a pumped storage power generator, and the like. The scope of the present invention is not limited to this configuration.

The battery management system 4 may measure the temperature, the current, the voltage, the charge amount, and the like of the battery 5. In addition, the measured state of the battery 5 can be monitored. Further, it is possible to control the operating environment of the battery 5 to be optimized based on the measured state of the battery 5. In addition, the battery 5 can be stably managed.

The power management system 2 can manage the power of the energy storage device such as the power conversion device 3 and the battery management module 4. [ The power management module 3 may be under the control of an energy management module 1.

The energy management module 1 receives information on charge information, power consumption, environmental information, etc. from the outside, and analyzes the energy production, storage, and consumption patterns of the user to provide an optimal solution. The energy management module 1 may be provided as an operating system for monitoring and controlling the power management module 2 through a control center and a HEMS gateway. Alternatively, the power management module 2 may be provided integrally with the energy management module 1. The spirit of the present invention is not limited to this configuration. However, in the present embodiment, the energy management module 1 can control not only the power management module 2 but also the overall operation of the energy storage device.

In the control method of the energy storage device according to the present embodiment, the charging and discharging state of the battery can be controlled. In detail, according to the charging and discharging states of the battery, the user can directly control the user using the user interface (see 220 in FIG. 4) provided in the energy management module 1. [ Alternatively, it can be controlled by an instruction from the control center. At this time, the control center can be controlled under the control of the external management subject.

Table 1 briefly illustrates the various operating modes of the energy storage device.

Referring to Table 1, the control method of the energy storage device includes a manual mode in which a user directly controls a state, an automatic mode that is automatically operated in accordance with a predetermined mode when the user designates all of them, A protective mode that is forced to operate, and an installation mode that is performed when the energy storage device is installed.

Main Category

Operation mode
action
Manual mode
Charging mode

The mode in which the user manually charges the battery
Discharge mode

Mode in which the user manually discharges the battery
Standby mode

Mode in which the user manually waits for the battery to charge and discharge
Automatic mode
Green mode

After the generated power is supplied to the load, the surplus power is firstly charged to the battery,
Economy mode

A mode in which after the generated power is supplied to the load, the surplus power is charged to the battery first and then charged
ECHONET-lite mode

Modes controlled by Control Center or Hemp Gateway control commands
Protected mode
Power failure mode

Mode for supplying generated power and battery power to critical load during power failure
Forced charging mode

Mode for forcedly charging the battery when the SOC of the battery is below the minimum charge level
Installation mode
Commissioning mode

The mode to be performed when installing the energy storage device

With reference to Table 1, an installation mode in the operation mode of the energy storage device will be described.

The installation mode may include a test mode for commissioning the energy storage device. The test mode can confirm whether each of the modes shown in Table 1 can be normally operated when the energy storage device is installed. The test mode can confirm whether the energy storage device and the energy storage device are normally operated when re-installing devices connected to the energy storage device and the energy storage device. The commissioning mode is not limited to installation and reinstallation, and may be performed to confirm the energy storage device during an abnormal operation of the energy storage device. And may be performed in various cases for checking and checking the energy storage device and the device connected to the energy storage device. However, the control method of the energy storage device according to the present embodiment is characterized by conveniently and accurately performing the trial operation mode.

The control method of the energy storage device is characterized by determining at least one of the communication connection state and the electric connection state between the energy storage device and the devices connected to the energy storage device. In detail, the user can confirm whether or not at least one of the communication connection state and the electric connection state is abnormal by using the user interface 220 provided in the energy management module 1. In other words, it is possible to confirm a short-circuit of a power cable or a communication cable connecting each device and the energy storage device through the user interface 220.

The energy management module 1 can transmit a control signal to the power management module 2 when the start of the test mode is input from the user or installer through the user interface 220. [ The power management module 2 may perform an operation corresponding to the control signal. For example, when a signal of step S110 of checking the connection state is inputted, at least one of the voltage and current of the power cable connected to each of the components through the power conversion device 3 can be measured. At least one measured value of the measured voltage and current may be received by the energy management module (1). In addition, the energy management module 1 can receive the environmental condition of the battery and the like from the battery management module 4. [ In other words, the values measured in the power management module 2 and the battery management module 4 may be transmitted to the energy management module 1. [ The measured values transmitted to the energy management module 1 may be displayed in real time through the user interface 220.

The control method of the energy storage device according to the present embodiment can be characterized in that the charge and discharge of the battery 5 and the transmission state of the power generation module 6 are controlled. In detail, the user can directly control using the user interface 220 provided in the energy management module 1. Alternatively, it can be controlled by referring to preset information. In addition, the user interface 220 can confirm whether or not each constituent device and the energy storage device are normally operated.

For example, when the step of checking the operation state of the energy management module 1 through the user interface 220 is input (S120), the energy management module 1 controls the power management module 2 Signal can be transmitted. The power management module 2 can manage the power of the power conversion device 3 based on the control signal. For example, when the power system-battery charging step S121 is input, power can be supplied from the power system. The supplied power can be converted into direct current power through the converter of the power conversion device 3. [ Then, the battery 5 can be charged. At this time, the power management module 2 can receive environment information of the battery from the battery management module 4. [ Thereafter, when the battery 5 is charged for a predetermined time, it can be determined that the power system-battery charging step S121 is completed. The power management module 2 may transmit the information received from the battery management module 4 and the power conversion device 3 to the energy management module 1. [ The transmitted information may be provided to the user in real time through the user interface 220 of the energy management module 1. [

2 is a flow chart showing an operation flow of the test operation mode.

Referring to FIG. 2, the test mode includes a step S110 of checking the connection state of the energy storage device and the devices connected to the energy storage device, and the steps of connecting the devices connected to the energy storage device and the energy storage device And a step of checking the operation state (S120).

The checking of the connection state (S110) may confirm whether the various devices connected to the energy storage device and the energy storage device are properly connected. In detail, at least one of voltage and current of a power cable connecting the power conversion device 3, the battery 5, the power generation module 6, and the power system 7 can be measured. Alternatively, at least one of the voltage and current of the power cable included in the energy storage device can be measured.

Data of a communication cable connecting the power conversion device 3, the power management module 2, the battery management module 4, and the energy management module 1 may be collected. In addition, data of a communication cable of the energy storage device and devices connected to the energy storage device may be collected.

Thereafter, the communication connection status can be confirmed based on the collected data. Also, the electrical connection state can be confirmed based on at least one of the measured voltage and current. For example, if at least one of the collected data and measured voltage and current is a normal value, it can be determined that the connection is correct.

The connection state of the communication cable can be collected through a protocol. In particular, the energy storage device and the devices connected to the energy storage device can transmit data through a communication cable. At this time, the data transmitted through the communication cable may be a normal transmission / reception signal specified in advance in the protocol. The protocol may collect the data transmitted over the communication cable. Then, based on the collected data, it is possible to determine a normal connection state of each device including the communication cable.

The connection status abnormality judged through the protocol can be displayed externally through the user interface (see 220 in FIG. 4) of the energy management module 1

The connection state of the power cable can be confirmed by measuring either the voltage or the current through the meter. The meter may be provided in each device. Or the measuring instrument may be provided to the power conversion device 30. [ The scope of the present invention is not limited to this configuration. The measuring instrument can measure the output value of either the voltage or the current of each of the devices through the power cable. Then, it is possible to confirm whether or not the power cable is abnormal based on any one of the output voltage value and the current value. For example, when the measured voltage value and current value are normal values, it can be determined that the connection is correct.

The abnormality confirmed through the measuring instrument can be externally displayed through the user interface of the energy management module 1 (see 220 in FIG. 4).

That is, the step of checking the connection state (S110) may include confirming an electrical connection state of the energy storage device and the devices connected to the energy storage device, and a communication connection state of the devices connected to the energy storage device and the energy storage device . Then, the identified information may be provided to the user through the energy management module 1.

According to such a configuration, the user can confirm the connection state of the energy storage device and the devices connected to the energy storage device only by checking the energy management module. In addition, it is easy to check the part where the abnormality occurs.

The step of checking the operation state (S120) can confirm whether the energy storage device and the devices connected to the energy storage device are normally operated. The step of checking the operation state (S120) may be performed after the step of checking the connection state (S110) is completed. In particular, the energy storage device and the devices connected to the energy storage device can be commissioned for a predetermined period of time to be normally operated. More specifically, it is possible to confirm whether or not the battery 5 is normally charged through the power supplied from the power system 7. Then, it can be confirmed whether or not it is normally charged through the power generated from the power generation module 6. In addition, it is possible to confirm whether or not the battery 5 is normally discharged. Then, it is possible to confirm whether power generated by the power generation module 6 is normally transmitted to the power system 7. That is, by operating the energy storage device and the devices connected to the energy storage device for a predetermined time, it is possible to prevent a malfunction that may occur in the future.

First, the step of checking the connection state (S110) will be described in detail below.

3 is a flowchart showing an operational flow of a step of confirming the connection state. 4 is a diagram illustrating a user interface provided to a user in the step of checking the connection status.

Referring to FIGS. 3 and 4, the energy management module 1 may be provided with a user interface 220 indicating a current operating state. The user interface 220 may receive an operation for controlling the energy storage device from a user. The operating state of the energy storage device can be indicated outside. The user interface 220 may include an input unit for receiving a signal from a user and an output unit for indicating an operation state. Alternatively, it may be configured to simultaneously perform input or output through one user interface 220. [ In other words, it is possible to receive an operation signal from the user or to display the operation state to the user to the outside. The scope of the present invention is not limited to this configuration. However, the user interface 220 according to the present embodiment is described as a touch screen capable of simultaneously performing input and output operations. The user interface 220 is described as being provided to the energy management module 1, but may be provided as a power management module 2 or a separate device. The spirit of the present invention is not limited to this configuration.

The user or the installer can operate the test mode by operating the user interface 220. [ When the commissioning mode is activated, the user interface 220 may be provided as shown in FIG. Then, the energy management module 1 may perform the step of checking the connection state (S110) through the measurement device and the protocol.

In more detail, the step of checking the connection state (S110) may include a step (S111) of checking the connection state of the communication cable and a step (S112) of checking the connection state of the power cable. The step S111 of checking the connection state of the communication cable may be performed prior to the step S112 of checking the connection state of the power cable. Alternatively, it is possible to confirm the connection state of the communication cable and the power cable connected to any one device. However, the connection state of the communication cable can be confirmed prior to the connection state of the power cable. The scope of the present invention is not limited to this configuration.

The step S111 of checking the connection state of the communication cable may collect data of the communication cable through the protocol. In detail, a normal signal can be transmitted to a communication cable connecting normally operating devices. However, when the communication cable is short-circuited, disconnection or short-circuited, an abnormal signal may be generated. Or a normal signal may not be transmitted. Therefore, the normal signal of the communication cable can be collected through the protocol, and the abnormal state of the communication cable can be confirmed based on the collected normal signal. In addition, in the process of transmitting the normal signal, an abnormal state of the communication cable or the communication module or the communication devices can be checked. The scope of the present invention is not limited to this configuration.

If there is no abnormality in the step S111 of confirming the connection state of the communication cable, step S112 of checking the connection state of the power cable may be performed.

In the step S112 of checking the connection state of the power cable, either the voltage or the current may be measured through the meter. In detail, the power cable connecting the energy storage device and the devices connected to the energy storage device may include a power cable through which high-voltage power is transmitted, and a power cable for operating the energy storage device. Thus, the meter may be provided to the energy storage device and the devices connected to the energy storage device, respectively. Or may be provided integrally with the power conversion apparatus. The meter may measure either the voltage or the current of the power cable. The voltage value and the current measured through the measuring instrument can be measured as a normal value in a normal state. However, when the power cable is short-circuited, disconnection, and short-circuited, it can be measured as an abnormal value. Therefore, it is possible to determine whether the power cable is abnormal based on any one of the voltage value and the current value measured through the measuring instrument. An abnormality of the power cable may be provided to the user interface 220.

The step of checking the connection state (S110) can simultaneously confirm the connection state of the communication cable (S111) and the connection state of the power cable (S112). The spirit of the present invention is not limited to this configuration.

The user interface 220 may be provided with a connection status confirmation screen 210.

The connection status confirmation screen 210 may be provided with a preparation status window 211 of each of the devices. The connection status confirmation screen 210 includes a battery 5, a power generation module 6, a power conversion device 3, a grid 7, a meter, etc. As shown in FIG. The ready state window 211 may indicate that the ready state such as ready (Read), failure (Fail), etc. is completed according to the preparation state of each of the devices. The preparation status window 211 may be provided to each device of the connection status confirmation screen 210. And, the ready state window 211 can be changed according to each apparatus.

The process of checking the connection status (S110) will be described below.

The user may initiate the commissioning mode via the user interface 220. When the commissioning mode is started, step S110 of checking the connection state may be activated. The connection status confirmation screen 210 may be displayed on the user interface 220.

If the step of checking the connection state (S110) is activated, step S111 of checking the connection state of the communication cable may be activated. When the step S111 of checking the connection state of the communication cable is activated, data can be measured from the energy storage device and the communication cable of devices connected to the energy storage device. At this time, the data may be collected through a protocol installed in either the energy storage device or the device. Then, it is possible to determine whether the communication cable is abnormal based on the data collected through the protocol. If the abnormality of the communication cable is not generated in the step S111 of confirming the connection state of the communication cable, step S112 of checking the connection state of the power cable may be performed.

When the connection state of the power cable is confirmed (S112), either the voltage or the current may be measured from the power cable of the energy storage device and the devices connected to the energy storage device. At this time, any one of the voltage and the current may be measured through a meter installed in any one of the energy storage device and the devices. It is possible to determine whether the power cable is abnormal based on any one of the voltage and the current measured through the measuring instrument. If it is determined in step S112 that the connection state of the power cable is not abnormal, step S110 of confirming the connection state may be terminated.

If it is determined in step S110 that the connection status is not abnormal for each device, the ready status window 211 of the connection status confirmation screen 210 displays a green light or a ready An alarm indicating the status can be displayed.

For example, after detecting the voltage, current, temperature, etc. of the power cable connecting the power conversion device 3 and the battery 5 through the measuring device, if the abnormality is not detected, The ready state window 211 of the connection status confirmation screen 210 may be lit green. Or ready, or ready (ready).

Meanwhile, an abnormality may be determined in step S111 of checking the connection state of the communication cable or in step S112 of checking the connection state of the power cable. For example, when a short circuit, a short circuit, and a short circuit are generated in at least a part of the communication cable, a signal as defined in the protocol may not be transmitted or received. In this case, it can be determined that the connection state of the communication cable is abnormal. Alternatively, when an abnormality occurs in the communication module or the communication device connected to the communication cable, a signal as defined in the protocol may not be transmitted or received. Even in this case, it can be determined that the communication module and the communication device are abnormal. That is, the communication connection state of the energy storage device such as the communication module, the communication device, and the communication cable, and the devices connected to the energy storage device can be checked.

For example, when at least a part of the power cable is disconnected, and a short-circuit and short-circuit occurs, any one of abnormal voltage and current may be measured through the measuring instrument. In this case, it can be determined that the connection state of the power cable is abnormal.

If it is determined in step S110 that the connection status is abnormal, a red light may be turned on in the preparation status window 211 of the user interface. Alternatively, it is possible to provide a warning sound indicating that there is an abnormality in the connection state.

If it is determined that the power cable or the communication cable is abnormal, it is possible to confirm whether the power cable or the communication cable is restarted (S114). In detail, if there is an abnormality in the power cable or the communication cable, it is possible to indicate whether the power cable or the communication cable is restarted (S114) in the user interface 220 after waiting for an operation to proceed. The user can directly select whether the restart is required (S114) through the user interface 220. [ Alternatively, it may be operated with preset information. Thereafter, it is possible to retry the step of confirming the connection state (S110).

On the other hand, if the restart state (S114) is not inputted through the user interface 220, the step of checking the connection state (S110) may stop the step of checking the operation state (S115). At this time, the ready state window 211 may inform the ready state window 211 of the apparatus where the abnormality has occurred, Then, the step of confirming the connection state (S110) may be terminated.

If the step of confirming the connection state (S110) is normally completed, the step of checking the operation state (S120) may be performed.

The step of checking the operation state (S120) will be described in detail below.

5 is a flowchart showing an operation flow of a step of confirming an operation state.

Referring to FIG. 5, the step of checking the operation state (S120) may be performed after the step of checking the connection state (S110) is normally completed. The step of checking the operation state (S120) may determine whether or not the devices whose connection status has been confirmed can normally operate.

The step of checking the operation state (S120) may be performed for an energy storage area and a device connected to the energy storage device for a predetermined time. For example, a certain time may be provided for about 1 to 5 minutes. If there is no failure or failure for a certain period of time, the next step can be performed. If there is a failure or failure within the predetermined time, it can be performed in an incomplete state without performing the next step. The step of confirming the operation state (S120) may be restarted (S126) in accordance with the set time in the incomplete state or the setting information set by the user.

The step of checking the operation state S120 includes a step S121 of checking whether the battery 5 is charged through the power system 7 and a step S122 of checking whether the battery 5 is charged through the power generation module 6 A step S123 of confirming whether or not the electric power charged in the battery 5 is discharged to the power system 7, a step S123 of determining whether electric power generated in the electric power generation module 6 is transmitted to the electric power system 7, (Step S124). The order of each step may be changed according to the setting or necessity of the user. The spirit of the present invention is not limited to this configuration. Each step can be operated for the predetermined time. If the operation is normally performed for the predetermined time, it is determined that the started step is completed, and the next step can be performed.

The step of checking the operation state (S120) will be described step by step.

The power system-battery charging step 121 can confirm whether or not the power supplied from the power system 7 is normally charged to the battery 5 after passing through the power converter 3. [ The power input from the power system 7 may be provided by AC power. For example, the alternating-current power may be converted to direct-current power after passing through the converter of the power converter 3. And the converted DC power can be charged to the battery. At this time, the battery state, charge amount, temperature, and the like can be managed through the battery management module 4. In other words, it can be confirmed whether or not the power received from the power system 7 is normally transmitted to the battery 5.

In detail, the power system-battery charging step S121 may first check the remaining amount of the battery 5. [ Then, the power supplied from the power system 7 can be converted into the rated charging output of the battery 5, and the charging of the battery 5 can proceed. If the charging of the battery 5 proceeds normally for a predetermined time, it can be determined that the step is completed. Through such a configuration, it is possible to determine whether or not the battery 5 is normally operated through the power system 7. In addition, problems that may occur in the future can be prevented in advance.

The power generation module-battery charging step S122 can check whether or not the battery 5 is normally charged through the power generated through the power generation module 6. The power generated from the power generation module 7 may be supplied to the battery 5 after passing through a DC / DC inverter of the power inverter 3, for example.

In detail, the power generation module-battery charging step (S122) can first confirm the electric power generated from the power generation module 7. At this time, when the generated power is higher than the rated charging output of the battery 5, the battery 5 can be charged with the rated charging output of the battery 5. If the generated power is smaller than the rated charging output of the battery 5, the battery 5 can be charged with the current output of the battery 5. Thereafter, if the charging of the battery 5 proceeds normally for a predetermined time, it can be determined that the step is completed. Through such a configuration, it is possible to determine whether the battery 5 is normally operated through the power generation module 7. In addition, problems that may occur in the future can be prevented in advance.

The battery-power system discharge step S123 can confirm whether or not the electric power charged in the battery 5 is normally discharged to the electric power system 7. Peak management may be possible by discharging the battery 5 to the power system 7. The peak management can balance the demand and supply of electric power by charging the battery 5 at a time when electric power demand is low and discharging the battery 5 at a time when electric power demand is high. In addition, it can provide economical benefits to the user.

In detail, the battery-power system discharge step S123 may first check the remaining amount of the battery 5. [ The battery (5) can be discharged to the power system (7) with a rated discharge output. If the battery 5 normally discharges for a predetermined time, it can be determined that the step is completed. Through such a configuration, it is possible to determine whether or not the electric power of the battery 5 is normally discharged to the electric power system 7. In addition, problems that may occur in the future can be prevented in advance.

The power generation module-power system transmission step S124 can confirm whether power generated from the power generation module 6 is normally transmitted to the power system 7. The power generated in the power generation module 6 may be transmitted to the power system 7 after passing through an inverter or a converter of the power conversion device 3. In other words, the power generated from the power generation module 6 can be sold to the power system 7.

In detail, in the power generation module-power system transmission step S124, power generated in the power generation module 6 can be first checked. At this time, when the generated power 6 is larger than the rated output of the power conversion device 3, the power can be transmitted to the power system 7 at the rated output of the power conversion device 3. When the generated power is smaller than the rated output of the power conversion device 3, the output of the power conversion device 3 can be transmitted as the generated power of the power generation module. At this time, the rated output of the power converter 3 can be understood as a rated charging output of the inverter that converts the DC power generated from the power generation module 6 into AC power. Thereafter, when the power generated from the power generation module 6 is normally transmitted to the power system 7 for a predetermined period of time, it can be determined that the step is completed. With this configuration, it is possible to grasp whether or not the power generation module 6 normally transmits power to the power system 7. [ In addition, problems that may occur in the future can be prevented in advance.

The step of checking the operation state (S120) includes the steps of charging the power system-battery (S121), charging the battery module-battery (S122), discharging the battery-power system (S123) When the transmission step S124 is normally completed, the step of confirming the operation state (S120) may be completed. When the step of confirming the operation state is completed, the test operation mode may be terminated. When the test mode is terminated, the user can determine that the energy storage device is normally operable. The user can then operate the energy storage device in each mode (see Table 1).

If it is determined that the operation state is not operated for a predetermined time at each step of the step of checking the operation state (S120), or if the failure of the constituent device is judged, it can be judged that each step is incomplete.

In detail, the case in which it is not completed at each step will be described below.

First, if the error is generated more than the predetermined number of times after comparing the reference power value with the actually measured power value, the measurement device may be determined to be incomplete. At this time, the error range may be provided within 3%. The set number of times may be designated by the user. Further, when a failure occurs in the constituent device constituting the energy storage device, the step in progress can be judged to be incomplete. Also, if the user or the installer stops directly while the energy storage device is operating in the test run mode, it can be determined that the energy storage device is incomplete. At this time, the operation of the trial operation mode can be stopped through the stop button or the user interface 220 separately provided as a method of directly stopping the operation. The scope of the present invention is not limited to this configuration.

If it is determined in step S120 that the operation state has not been confirmed in step S120, step S120 of confirming the operation state may wait while the operation in progress is stopped. At this time, it is possible to select whether to restart the user (S126) through the user interface 220. [ In the case of selecting the restart state (S126), the step of checking the operation state (S120) may be performed again. The step S126 of selecting whether or not to restart can be preset by the user. Or the user can directly select through the user interface 220. [ The scope of the present invention is not limited to this configuration.

If the step S126 is not performed, the step S127 may be terminated. When the step of confirming the operation state is interrupted, it can be indicated through the user interface 220 that the operation state is abnormal.

The operation of the user interface, for example, at any one of the above-described operation state checking steps will be described.

6 is a diagram showing a user interface provided to the user in the step of checking the operation state.

Referring to FIG. 6, when the operation state is confirmed (S120), a process may be performed on the user interface 220 provided in the energy management module. The user can confirm the operation of the energy storage device through the user interface 220.

The user interface 220 includes a progress status window 230 indicating the progress of each step, a progress bar 231 indicating progress of completion, an operation bar 232 capable of operating the respective steps, May be provided.

The progress bar 231 may be sequentially turned on in accordance with the degree of completion of each step. In addition, the progress window 230 may be provided as four blocks corresponding to four stages.

The selection bar 232 may be displayed as a stop or a start according to the progress of the step. The user can select the operation bar 232 and proceed to the step. Alternatively, it may be operated in the order of pre-stored steps. In addition, the operation bar 232 may be inputted whether or not to select whether or not to restart (S126). The scope of the present invention is not limited to this configuration.

7 is a diagram illustrating a user interface provided when a user selects a progress window in FIG.

7, when the user selects the progress status window 230 or the progress bar 231, the progress status window 230 provides detailed progress information of the selected progress status window 230 An information window 233 may be provided. The detailed progress information may include detailed information of current steps such as charging power, remaining charge, and voltage display.

The detailed progress information provided in the progress information window 233 may be provided based on any one of a voltage and a current measured by the measuring instrument. In addition, the user can confirm the value changed in real time through the progress information window 233. The progress information window 233 may provide changed information according to each step. The spirit of the present invention is not limited to this configuration.

8 is a diagram illustrating a user interface provided to a user when one step of confirming an operation state is normally completed.

The progress bar 231 of the step normally completed in the step of checking the operation state (S120) may be indicated by a green light, a pass, or the like. And, when one step is completed, the progress status window 230 and the progress bar 231 of the next step can be operated. The user can confirm the detailed information by selecting the completed progress bar 231 in the progress information window 230.

Accordingly, the user can conveniently check the progress of each step through the user interface 220.

9 is a diagram showing a user interface provided to a user when one of the steps of confirming an operation state is detected as abnormal.

The progress bar 231 may indicate an abnormality in the step of checking the operation state (S120). For example, the progress bar 231, which is not normally operated in the step of checking the operation state (S120), may be displayed as red light or failure. Then, a flashing light or a warning sound that can indicate that there is an abnormality may be provided.

Accordingly, the user can easily check the abnormality through the interface 220. In addition, since the abnormal state is displayed in the progress window 230 of the device in which the abnormality has occurred, the user can conveniently check the device in which the abnormality occurs.

FIG. 10 is a diagram illustrating a user interface provided when a user selects a progress window in FIG.

The user can select the progress bar 231 or the progress window 230 of the device in which the abnormality has occurred. When the progress bar 231 or the progress window 230 is selected, an error information window 234 indicating error information corresponding to the abnormality may be displayed. If the error information window 234 is selected, detailed error information can be provided.

The error information window 234 may be provided with an error code. The error code may include error information corresponding to each step. The error code may include a cause for generating the error information and a solution for resolving the error.

Referring to FIGS. 6 to 10, the process of confirming the operation state (S120) will be described below based on the user interface 220. FIG.

The user can select the trial operation mode through the user interface 220. [ When the start-up mode is selected, the energy management module 1 can control the operation corresponding to the start-up mode. Then, step S110 of confirming the connection state can be performed. When the step of checking the connection state (S110) is completed, a step of checking the operation state (S120) may be performed.

When the step of checking the operation state (S120) is performed, the power system-battery charging step (S121) may be performed first. That is, power can be supplied from the power system 7. The supplied power may be converted to direct current power after passing through the converter of the power conversion device 3. The converted DC power is supplied to the battery 5 so that the charging of the battery 5 can be started. At this time, the user interface 220 may be displayed in the progress status window 230 corresponding to the power system-battery charging step S121. The progress bar 231 may be turned on in the progress window 230. Then, the user can check the progress information window 233 by selecting the progress status window 230.

When the power system-to-battery charging step S121 normally proceeds for a predetermined time, a pass PASS indicating the completion of the power system-to-battery charging step S121 is transmitted to the user interface 220 corresponding to the power system- ). ≪ / RTI > Then, the power generation module-battery charging step S122 corresponding to the next step may be performed. Then, when all of the power generation module-battery charging step S122, the battery-power system discharge step S123, and the power generation module-power system power transmission step S124 are normally completed, the trial operation mode may be terminated.

On the other hand, if the power system-battery charging step S121 is not normally operated for a predetermined time, the power system-battery charging step S121 may be switched to an incomplete state. In other words, the power system-battery charging step S121 may be switched to the standby state. Failure indicating that the user system is not complete may be displayed on the progress bar 231 in the user interface 220 corresponding to the power system-battery charging step S121. Thereafter, the user can select a restarting operation (S126) after eliminating the problem corresponding to the incomplete state. In step S126, it is possible to start the step of checking the operation state (S120) again.

If it is determined in the step S126 that the restarting is selected, or if the user does not select the restarting state, the step of confirming the driving state may be stopped (S127). Thereafter, the step of checking the operation state (S120) may be terminated. If the step of checking the operation state (S120) is ended in a stopped state, it is determined that the operation state is not normally completed, and it is possible to indicate that there is an abnormality through the user interface 220. [

According to the present invention, a user or an installer can conveniently check the connection state between the energy storage device and the constituent devices. And a state can be provided through the user interface. That is, the user or the installer can more conveniently perform the maintenance of the energy storage device. Therefore, its industrial application is highly expected.

1 Energy Management Module (EMS) 2 Power Management Module (PMS)
3 Power Conversion Unit (PCS) 4 Battery Management Module (BMS)
5 Battery 6 Power generation module (PV)
7 Power system (Grid) 8 Load (Load)
220 User Interface (UI)

Claims (12)

Transmitting and receiving to and from a connection device connected to the power conversion device to check the connection state of the power conversion device and the connection device;
Operating the energy storage device when there is no abnormality in confirming the connection state; And
And checking an operating state of the energy storage device. The method according to claim 1,
In the connecting device,
A battery for storing electric power;
A power system for supplying electric power from the outside; And
A control method of an energy storage device including a power generation module for power generation. The method according to claim 1,
To confirm the connection status,
Checking the status of communication connection; And
And checking the electrical connection status. The method of claim 3,
Wherein the communication connection status is determined based on data measured through a predetermined protocol,
Wherein the electric connection state is checked based on at least one of a voltage and a current measured through a relay. 3. The method of claim 2,
In confirming the operating state of the energy storage device,
Charging the battery with power;
Discharging the power of the battery; And
And transmitting power to the power system. 6. The method of claim 5,
The charging, the discharging,
Wherein the predetermined time is set for a predetermined time. 6. The method of claim 5,
In the charging,
And charging the battery based on the amount of power generated from the power generation module or charging the battery based on power supplied from the power system. 6. The method of claim 5,
To discharge,
And discharging to the rated discharge output of the battery based on the remaining amount of the battery. 6. The method of claim 5,
In the transmission,
Wherein power is transmitted to the power system based on an amount of power generated from the power generation module, by an output of a rated output or a power generated by the power conversion apparatus. 10. The method of claim 9,
Wherein the rated output of the power conversion device is a rated output of the inverter of the power conversion device. The method according to claim 1,
The energy storage device further includes a user interface,
In the user interface,
A progress information window sequentially displaying a progressing process;
A detailed information window providing detailed information corresponding to the progress information window; And
And an error information window for providing error information corresponding to the progress information window. The method according to claim 1,
In the control method of the energy storage device,
A manual mode in which the user directly controls the state of the battery;
A protection mode forcibly operated for protecting the energy storage device; And
A method of controlling an energy storage device, the method comprising: specifying a charging time and a discharging time desired by a user;

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