KR101863141B1 - Power-controlled energy management system using lithium battery and supercapacitor - Google Patents

Abstract

The present invention relates to a power control type energy management system using lithium ion batteries and super-capacitors. According to an embodiment of the present invention, the power control type energy management system using lithium ion batteries and super-capacitors includes: a novel renewable energy generation facility (100); a bidirectional power conditioning system (Bi-dPCS, 200); a battery management device (BMS, 300); a system-side power conversion device (500); and an energy storage system (ESS).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power-controlled energy management system using a lithium-ion battery and a supercapacitor,

The present invention relates to a power control type energy management system, and more particularly, to a power management type energy management system capable of adaptively adapting to a general load (normal load) and a rapid load (startup load) And more particularly, to a power control type energy management system using a lithium ion battery and a super capacitor to enable efficient battery control and management.

Recently, at home and abroad, stabilization of storage devices for renewable energy generation facilities such as solar power generation system and wind power generation system, energy control system (ESS, Energy Storage System) and energy management system (EMS, Energy Management System).

The technology of domestic ESS was applied in connection with the sunshine sprout power plant business which is being built on the national school rooftop at KEPCO and six power generation facilities, as the Ministry of Industry and Commerce changed the mandatory system for supplying renewable energy.

The role of domestic solar power and energy storage system (ESS) can be divided into four categories: solar power generation check, solar charge control (10 ~ 16), and ESS (The highest time except 10 to 16 o'clock), and the total ESS development and check and profitability calculations of the charging and transmission system. If the above 4 items are satisfied and the function and quality of products are excellent, it is essential to develop ESS that is most optimized for domestic PV market.

ESS currently invests 1MW, requires about 500 million won for battery, 300 million won for output device, and 800 million won for all. And considering the battery consumption, battery management method is very important. Therefore, various methods have been developed to minimize the number of times of charge and discharge in order to extend the life of the battery. However, there is no improvement method through hardware, and the improvement is mainly achieved through the control method.

In this regard, many Smart Grid ESS demonstration projects are underway in Korea, but it is expected that the verification period will take at least two to three years from the start of the project to the level of one to two years, and the infrastructure such as test evaluation and safety certification is insufficient. to be. This is due to the lack of incentives for installing ESS, which makes it difficult to narrow the technology gap with foreign countries, and it is difficult to form a smooth ESS market due to the low proportion of renewable energy generation (6.61% in 2015) It is a situation.

Major developed countries such as USA, Europe and Japan are actively promoting ESS research and demonstration, and they are entering the commercialization stage by succeeding in some commercialization. In the United States, ARPA-E (research institute under the DOE) is conducting research and development on the basis of public institutions (ARPA-EI, etc.) and large power companies (AES, AEP, etc.). Lithium rechargeable batteries and super capacitors , And a redox flow cell. The company is also investing $ 92 million in energy storage technologies. In addition, Europe is promoting the 'Solion Project', which is organized by the French Ministry of Economy and the German Ministry of Environment. In particular, Saft of France and Conergy of Germany participate in the power companies, battery companies, And is accelerating the development of lithium secondary batteries for energy storage. In Japan, NEDO is leading the development of a large-capacity battery roadmap. NGK and others have commercialized NaS batteries and have advanced technology in lithium secondary batteries. GS-Yuasa, Mitsubishi and Elly Power are also developing lithium secondary batteries. It is emphasized.

Such global ESS growth forecasts and ESS utilization are expected to continue to increase mainly due to peak demand reduction and the increase in ESS facility capacity to reduce peak demand will increase from 2,247MW in 2016 to 16,273MW in 2020 (Ministry of Commerce, Industry and Energy "Energy New Industry, Energy Storage Device", August 2015 Report).

Meanwhile, the EMS (Energy Management System) refers to the optimal operation technology of the ESS for improving the power consumption structure and reducing the electricity rate by reducing the peak power of the power consumer and moving the load. EMS collects various data in the process of production and consumption of energy (electric power) and supports cost-effective management. It performs functions such as forecasting, guidance, direct power control and performance information provision through data analysis, Thereby realizing optimization of efficiency.

Currently, battery and PCS (Power Conditioning System) element technologies related to ESS are commercialized, but existing systems installed in management and control sites have been modified so that ESS charge amount, discharge amount, peak cutting amount There is a lack of EMS control technology to monitor and manage ESS situations remotely.

Therefore, the present invention solves the above problems, adapts to the starting loads and various loads of facilities such as buildings and factories, and proposes a completely new demand-responsive energy management system for optimal operation of ESS.

It is an object of the present invention to provide a fusion type 10 KW energy management system which can cope with a normal load with a lithium-ion battery and a super-capacitor with a rapid load requiring instantaneous operation, thereby stabilizing a storage device, And a power-controlled energy management system using a lithium-ion battery and a super capacitor to enable stable energy supply through energy monitoring and management.

According to an aspect of the present invention, there is provided a renewable energy generation facility (100) for generating electric energy using sunlight and wind energy; The method of claim 1, further comprising: charging and power-converting the DC power rectified by the commercial power source (AC) of the new and renewable energy generation facility and the system to a power storage device (PSS) (Bi-dPCS) 200 for controlling the charging / discharging of the PSS through communication control with a battery management system (BMS) for monitoring and protecting the PSS, A battery management device (BMS) 300 that maintains the balance of the PSS cells through communication control with the Bi-dPCS and serves to stop charging when the input voltage becomes a certain value or less; A lithium ion battery 410 and a plurality of supercapacitor 420 for charging the renewable energy generation facility and the rectified commercial power source by the Bi-dPCS and the BMS are connected in series or in parallel so as to correspond to the system load A power storage device (PSS, 400) having one pack; A first sensor 510 for converting the DC power supplied from the renewable energy generation facility to AC power for supplying the load to the load, a normal load and a rapid load for the load side to be transmitted to the DSP controller, (500) having a power converter (520); The Bi-dPCS 200 controls the Bi-dPCS to control the Bi-dPCS for controlling the charging / discharging of the PSS and the bidirectional power conversion based on the information of the sensors. In the case of the first sensor 510, ) Is directly converted into AC power through the 3-level inverter 220 built in the Bi-dPCS and supplied to the load or supplied to the grid side power conversion device, A second controller 520 for controlling the Bi-dPCS to convert the DC power charged in the supercapacitor of the PSS to direct AC power to be supplied to the load or to be supplied to the system power converter, (600), and further includes an energy storage (ESS) controller for collecting data on the load side during power generation and consumption of the ESS to manage the ESS, Function of the controller (EMS) 700 in which a setup program for converting the collected information into a current command and delivering a management command to the DSP controller is further included. A control type energy management system is provided.

According to another aspect of the present invention, the energy management apparatus (EMS) 700 includes Arduino and Raspberry Pi in the energy management system to collect information communicated between the Bi-dPCS and the BMS, Is mounted.

The power control type energy management system using the lithium ion battery and the super capacitor according to the present invention has the following effects.

(1) The present invention realizes a power-controlled energy storage device adaptable to a general load (normal load) and a rapid load (startup load) through a sensor (IoT) and a DSP controller, Control is possible.

(2) By fusing a lithium ion battery with a supercapacitor, the present invention can prevent sudden change in output of renewable energy, which is severely fluctuated in output depending on the external environment such as sunlight and wind power during charging or discharging of the energy storage device It is possible to improve the power quality.

(3) In the case of wind power generation according to the present invention, abrupt output fluctuation occurs according to the wind speed, so that when the battery is protected by utilizing the super capacitor, the lifetime of the expensive lithium battery can be extended.

(4) The present invention can remotely monitor and manage the on-site ESS conditions such as ESS charge amount, discharge amount, and peak cut amount by time.

(5) The present invention has a unique effect of effectively reducing the electricity rate by applying a power supply system for the customer such as a building, a book area, and a factory.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the entire technical construction of a power control type energy storage device using a lithium ion battery and a super capacitor according to a preferred embodiment of the present invention; FIG.
FIG. 2 is a circuit diagram illustrating a bidirectional power conversion apparatus for a power-controlled energy storage device using a lithium ion battery and a supercapacitor according to a preferred embodiment of the present invention.
FIG. 3 is a graph comparing a DC-DC converter for a power-controlled energy storage device using a lithium ion battery and a super capacitor according to a preferred embodiment of the present invention with a conventional technology.
FIG. 4 is a circuit diagram illustrating a three-phase three-level inverter for a power-controlled energy storage device using a lithium ion battery and a supercapacitor according to a preferred embodiment of the present invention.
FIG. 5 is a graph illustrating a comparison between a three-phase three-level inverter and an output voltage of a power control type energy storage device using a lithium ion battery and a super capacitor according to a preferred embodiment of the present invention,
6 is an actual design drawing of a DSP controller for a power-controlled energy storage device using a lithium ion battery and a supercapacitor according to a preferred embodiment of the present invention
7 is a block diagram showing the entire technical structure of a power control type energy management system using a lithium ion battery and a super capacitor according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. Although the same reference numerals are used in the different drawings, the same reference numerals are used throughout the drawings. The prior art should be interpreted by itself. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 to 7, a technical configuration of a power control type energy management system using a lithium ion battery and a super capacitor according to a preferred embodiment of the present invention is largely divided into a renewable energy generation facility 100, a bidirectional power conversion device A Bi-directional Power Conditioning System 200, a Battery Management System (BMS) 300, a Power Storage System (PSS) 400, a grid side power conversion device 500, A DSP (Digital Signal Processor Controller) 600, and an energy management system (EMS) 700.

Referring to FIG. 1, the renewable energy generation facility 100 is a means for generating electric energy using sunlight and wind energy. Since the electric power generated by the solar power generation facility is DC, However, electricity generated from wind turbines is converted to direct current (DC) in order to be charged to a storage device because it is mostly an alternating current rather than a direct current. The DC stored in the storage device must be converted to alternating current (AC) in order to supply the DC load to the remaining loads. In contrast to photovoltaic power generation, in the case of wind power generation, sudden power fluctuations occur due to wind speed, so that the storage device is charged with a high-performance supercapacitor.

Referring to FIGS. 1 and 2, the Bi-directional Power Conditioning System (Bi-dPCS) 200 converts power stored in the power storage device 400 into electric power conversion efficiency (DC power) of the power storage device directly from the Bi-dPCS to AC or to rectify the system power (AC) from the Bi-dPCS directly to DC so as not to deteriorate the power storage device The rectifier 210 rectifies the commercial power supply AC of the facility 100 and the grid to charge the DC power to the power storage device PSS 400 and convert the power between the DC power and the AC power. At this time, in response to a command from the DSP controller 600, the charging power of the PSS 400 is directly converted into AC power and discharged to a load. Also, the PSS 400 performs communication control with the BMS 300 to monitor and protect the PSS 400, and uses the SOC and the voltage information provided by the BMS to control the lithium ion battery 410 of the PSS ) And the super capacitor (420).

The bidirectional power conversion apparatus (Bi-dPCS) 200 according to the embodiment of the present invention can supply AC power supplied from the system (commercial power supply) to the Li-ion battery 410 of the PSS 400 and the supercapacitor 420 for direct DC power conversion for charging.

The Bi-dPCS 200 according to the embodiment of the present invention supplies DC power discharged from the Li-ion battery 410 of the PSS 400 and the supercapacitor 420 to a load A bidirectional power converter (Bi-dPCS 200) or a bidirectional power converter (Bi-dPCS 200) is provided in the bidirectional power converter (Bi-dPCS 200) Level inverter 220, the wiring circuit can be configured to be connected to the system side power conversion apparatus 500 without incorporating the 3-

Here, the bidirectional power conversion apparatus (Bi-dPCS 200) according to the embodiment of the present invention has a direct current type power generated from a renewable energy generation facility 100 such as solar power generation or wind power generation. When storing this power in the lithium ion battery 410 or the supercapacitor 420 of the power storage device PSS 400, it is necessary to store the power as a direct current. The problem is that the power supply of the direct current type to the system load impossible. Therefore, a power conversion device (PCS) is required to convert direct current (DC) type power to alternating current (AC) power. In addition, when the grid power (commercial power) is stored in the power storage device (PSS) 400, a power conversion device (PCS) or a rectifier for converting the power into DC power is required.

When the renewable energy generation facility 100 and the grid (commercial power source) are connected to each other as described above, a power conversion device capable of converting the direct current (DC) into the alternating current (AC) and the alternating current (AC) PCS). In an embodiment of the present invention, a Bi-directional Power Conditioning System (Bi-dPCS) 200 is uniquely implemented to solve this problem.

In order to extend the service life of the lithium ion battery 410 and the supercapacitor 420 of the power storage device (PSS) 400 according to the embodiment of the present invention, the power storage device (PSS) It is important to keep the state of charge (SOC) constant. When the SOC is too low or high, deterioration of the lithium ion battery 410 and the supercapacitor 420 of the power storage device (PSS) 400 is faster than that of maintaining the SOC at a medium level The range of appropriate SOC to be carried out can be found through repeated experiments. Also, if the cells of the lithium ion battery 410 and the supercapacitor 420 are overdriven, component parts are deteriorated and can not be recovered. When the charging voltage exceeds the threshold value, the cells of the lithium ion battery 410 and the supercapacitor 420 are overheated and changed to an irreversible structure. The battery management apparatus (BMS) 300, which will be described later, will overcome these problems (see FIG. 1).

The bi-directional power conversion apparatus 200 according to an embodiment of the present invention may include a power management system (PMS), which is an upper controller of the DSP controller (Digital Signal Processor Controller) It is possible to configure the bidirectional power conversion control by any one of the management system (EMS, Energy Management System) and the current command selected.

The Bi-dPCS 200 according to an embodiment of the present invention performs current control to apply a direct current (DC) power to the lithium ion battery 410 and the supercapacitor 420 of the power storage device 400, And it can be configured to be able to support the constant power control for charging / discharging with the constant electric power by receiving the current command of the host controller, that is, the control method of the electric power conversion device which keeps the constant DC power constantly.

1, the battery management system (BMS) 300 is installed together with the power storage device 400 and is charged and discharged by the same terminals P + and P-, and the Bi- (PSS) 400, which is a means for maintaining the balance of the PSS cells through communication control with the dPCS and for protecting the charging when the input voltage becomes a certain value or less, Monitors the state of each cell of the ion battery 410 and the supercapacitor 420 and protects the power storage device by incorporating a protection circuit for protecting the cell. State and operation information of each cell of the lithium ion battery 410 and the supercapacitor 420 of the power storage device 400 to the PC monitor.

In addition, the BMS 300 according to the embodiment of the present invention has a metrology structure for efficient operation, and includes a system BMS for monitoring and protecting the entire power storage device, a storage device module and an individual storage device And a module BMS for monitoring and protecting a cell.

Also, the BMS 300 according to the embodiment of the present invention performs communication (protocol open) with the Bi-dPCS 200 to calculate minimum, average, maximum voltage, temperature, energy storage (SOC) and a remaining lifetime (SOH) of the device, and transmits it to an external device (or PC) via the interface.

In other words, the battery management system (BMS) 300 according to the embodiment of the present invention can be roughly classified into two types. First, the heat management is controlled so that each cell by the heat is uniformly cooled to achieve the same performance. Second, the state of charge of each cell is determined and the charge state SOC) control. These two control modes allow a single cell of a Li-ion battery to have a rated voltage of 3.6 V and a charging voltage of 4.2 V, thus connecting a lithium-ion battery in series to generate voltages of several hundred volts or more . When a plurality of cells are connected in series, if any one cell fails or deteriorates, the entire battery pack is affected. Therefore, BMS applied to HEV (Hybrid Electric Vehicle) or EV (Electric Vehicle) is designed to prevent overcharging, over-discharge, and overheating of individual cells and to optimize their lifetime. This is because cell balancing is required. In addition, the BMS monitors the voltage, current and temperature of the system, maintains it in an optimal condition, and provides alarms and safety precautions to stabilize the system. Protects overcharge and overdischarge during charging and discharging of the battery, and uniformizes the voltage between the cells, thereby extending the energy efficiency and the life of the battery. And it is possible to diagnose the preservation of data and diagnose system through diagnosis and storage system of alarm history status or monitoring PC. The function of the BMS is configured to be applied to both the lithium ion battery 410 and the supercapacitor 420 according to the embodiment of the present invention.

Referring to FIGS. 1 and 2, the power storage system (PSS) 400 is a power storage system in which a DC power generated in a renewable energy generation facility 100 and an AC power input from a grid (commercial power supply) (DC) power source for charging and discharging DC power, and the Bi-dPCS 200 and the BMS 300 charge the DC power of the commercial power source rectified with the renewable energy generation facility. (Li-ion battery) 410 and a plurality of super capacitors 420 are connected in series or in parallel so as to be able to cope with the system load appropriately.

Referring to FIGS. 1 and 3, the power storage device (PSS) 400 according to the embodiment of the present invention reduces the cost of system design and manufacture when a conventional DC-DC converter (capacitor semi-active hybrid topology) On the other hand, it is difficult to efficiently operate the entire system and cooperate with the grid-connected inverter (refer to FIG. 3 (a)).

Therefore, in the embodiment of the present invention, the structure is improved to have an independent DC-DC converter structure (Parallel active hybrid topology), thereby ensuring the reliability and flexibility of the entire system (see FIG.

As a result, it is possible to design a parallel type current control and voltage controllable CC-CV controller structure capable of controlling the current and voltage of the lithium ion battery 410 and the supercapacitor 420 of the power storage device 400 in parallel .

1 and 4, the grid-side power conversion apparatus 500 includes a lithium ion battery 410 and a supercapacitor 420 of the renewable energy generation facility 100 and a power storage device (PSS) To AC power for supplying the DC power charged in the renewable energy generation facility 100 to AC power for supplying the DC power to the load. In addition, a sensor (IoT) for detecting a rapid load such as a normal load such as a lamp load on the load side or a power load requiring instantaneous start and sending it to the DSP controller 600 is connected to the system side power inverter 500 .

In addition, the system-side power inverter 500 according to the embodiment of the present invention applies a three-level inverter (3-level inverter) and a PWM (Pulse Width Modulation) (2-Level Inverter) and the output voltage is increased to improve the efficiency characteristics of the inverter.

The three-phase three-level inverter structure and the output voltage of the grid side power inverter 500 according to the embodiment of the present invention will be described in more detail with reference to FIGS. 5 (a) to 5 (D).

In the case of the conventional three-phase two-level inverter of FIGS. 5 (a) and 5 (b), problems such as increase in harmonic generation and efficiency decrease due to application of a simple structure and a verified PWM control method, However, in the embodiment of the present invention, the harmonics and efficiency characteristics of the entire inverter are greatly improved by applying the three-phase inverter and the PWM control method to improve the problems of the conventional three-phase two-level inverter (See Fig. 5 (A)).

The output voltage of the 3-phase inverter (3-level inverter) according to the embodiment of the present invention is shown in FIG. 5 (B) It can be seen that the level of the output voltage is greatly increased as compared with the upper two-level inverter.

1 and 6, the DSP controller 600 is a means for controlling operation and power conversion of the bidirectional power conversion apparatus (Bi-dPCS 200). The DSP controller (Digital Signal Processor Controller) 600 receives the information of the sensor (IoT) that senses the load side information connected to the grid side power conversion device 500 and outputs the bi-directional power between the charge / discharge and the direct current of the power storage device (PSS) Directional power converter (Bi-dPCS, 200) which controls the bi-directional power conversion device to control the bi-directional power conversion device.

The DC power source and the system (commercial power source) of the renewable energy generation facility 100 that is introduced into the connection panel 110 and the rectifier 210 (210) of the DSP controller 600 according to the embodiment of the present invention will be described in detail. The bidirectional power conversion unit Bi-dPCS 200 connected to the connection unit 110 receives a signal for a DC power supply through the lithium ion battery 410 of the power storage device PSS 400, A control command is issued to charge the capacitor 420. The bidirectional power converter (Bi-dPCS) 200 receiving the command of the DSP controller 600 receives the direct current power connected to the connection board 110 and the direct current power passed through the rectifier to the lithium ion battery Switching to each of the super capacitors to charge the Li-ion battery and super capacitor.

The DSP controller 600 also includes a first sensor Iot 510 for sensing a normal load such as a lamp load connected to the grid side power conversion device 500 for supplying AC power to the system load, (PWM) signal of a second sensor (Iot, 520) for sensing a rapid load such as a power unit requiring a power supply (PSS) 400 and a lithium ion battery 410 of the power storage device The bidirectional power converter (Bi-dPCS 200) issues a control command to supply the charging power charged in the capacitor 420 to the load. When the signal of the first sensor 510 connected to the grid side power conversion apparatus 500 is a general load, the bidirectional power conversion apparatus (Bi-dPCS 200) The DC power charged in the ion battery 410 is directly converted to AC power through the 3-level inverter 220 built in the Bi-dPCS 200 and supplied to the load or to the grid power converter 500 .

When the signal of the second sensor 520 connected to the grid side power conversion apparatus 500 is a rapid load, the bidirectional power conversion apparatus (Bi-dPCS 200) DC power charged in the capacitor 420 is directly converted to AC power and supplied to the load or to be supplied to the grid side power inverter 500. [

Here, the power charged in the three-level inverter 220 built in the bidirectional power conversion apparatus (Bi-dPCS 200) is controlled to be directly supplied to the grid-side power conversion apparatus 500 without being directly converted into AC power The system power conversion apparatus 500 is configured to be converted into AC power to be supplied with AC power to the system load. Such a structure having the feature of the present invention is a dual stability device capable of manual control by a user and for supplying power to the system load more quickly and stably.

As described above, the above-described renewable energy generation facility 100, the bidirectional power conversion device (Bi-d PCS) 200, the battery management device (BMS) 300, the power storage device (PSS) 400 ), A grid-side power converter 500, and a DSP controller 600, and a power-controlled energy storage system (ESS, Energy Storage System) using a supercapacitor.

1, 2, and 7, an energy management system (EMS) 700 for a power control type energy management system using a lithium ion battery and a supercapacitor according to a preferred embodiment of the present invention Will be described in detail.

The energy management system (EMS) 700 is a means for collecting various kinds of data in the course of production and consumption of electric power for optimal operation of the ESS to support cost-effective management, KEPCO, and Korea Meteorological Agency to monitor and manage the situation of ESS such as charge amount, discharge amount and peak cut amount of ESS by time zone remotely.

To this end, it is necessary to have an upper controller of the DSP controller 600 controlling the bi-directional power conversion apparatus 200 so that the information collected by the energy management apparatus (EMS) And a program for instructing the DSP controller 600 to be set.

In addition, the energy management apparatus (EMS) 700 according to the embodiment of the present invention may be configured to transmit power to the energy management apparatus (EMS) 700 based on information provided from a power generation agency, a Korea Power Exchange, The PSS 400 collects communication information performed between the conversion device (Bi-dPCS 200) and the battery management device (BMS) 300 and transmits the communication information to the lithium ion battery 410 and the supercapacitor 420 of the power storage device Remote monitoring and management of ESS status such as charge and discharge amount, peak cutting amount by time, etc.

In order to detect various conditions of the ESS such as the charge amount and discharge amount and the peak cut amount for the lithium ion battery 410 and the supercapacitor 420, the Bi-dPCS 200 and the Bi- A configuration program for collecting information communicated between the battery management apparatus (BMS) 300 and the battery management apparatus (BMS) 300 must be installed in the control unit of the energy management apparatus (EMS) 700.

Therefore, the energy management apparatus (EMS) 700 according to the embodiment of the present invention is provided with Arduino or Raspberry Pi.

Since the Arduino and Raspberry pie are small PCs completed with a single-board microcontroller based on open source, interaction between the Bi-dPCS 200 of the ESS and the EMS 700 is possible, So that it can be easily monitored and managed.

Here, the Arduino according to an embodiment of the present invention refers to a board and related development tools and environment that are completed with a single-board microcontroller based on open source. Aduno takes a specific value from a plurality of switches or an external sensor and transmits the Bi-dPCS 200 and the DSP controller 600 of the energy storage device (ESS) according to the embodiment of the present invention and the energy management device (EMS) And the like, thereby enabling the user to interact with the environment, thereby creating objects having the same functions as the EMS 700. [ The device can be controlled using an environment that can easily be developed by one of the embedded systems. In addition, the Raspberry Pi 3B is the latest model of a single board computer, featuring a 64-bit processor, the ARM Cortex-53 quad core, and 10 times faster data processing speed than the first-generation Raspberry Phycomputer. In addition, the WiFi and Bluetooth wireless communication functions have been installed on the computer board from the beginning, unlike the conventional one that had to be added. It is 2.5 times faster than the first-generation Raspberry Pie in single-thread processing and 20 times faster in NEON video codec processing.

Also, the energy management apparatus (EMS) 700 according to the embodiment of the present invention is provided with an interface unit 710 and is configured to be able to monitor from a remote place such as a management center through the Internet and a PC.

In addition, an app is installed in the smart phone in order to allow a user to monitor and manage the remote management through communication between the energy management apparatus (EMS) 700 and the smart phone according to the embodiment of the present invention.

Hereinafter, the operation and effect of the power control type energy management system using the lithium ion battery and the supercapacitor according to the preferred embodiment of the present invention will be described in detail with reference to FIG. 1 to FIG.

The present invention relates to a new and renewable energy generation facility 100 and a system for charging and discharging the renewable energy generation facility and a commercial power source AC of the system to a power storage device PSS through communication control with a battery management system A Bi-dPCS (Bi-dPCS) 200 for converting a direct current and an AC power to each other, a battery management device (BMS) 300 for protecting the Bi-dPCS through communication control, A power storage device (PSS) 400 having a lithium ion battery 410 and a supercapacitor 420 for charging / discharging DC power of a commercial power source rectified by the renewable energy generation facility, Side power conversion device 500 having a sensor IoT for detecting a normal load and a rapid load and for transmitting the same to the DSP controller, and a controller for receiving the information of the sensor IoT, ㆍ Controls to convert bi-directional power between discharge and DC alternating current And a DSP controller 600 for controlling the bidirectional power converter (Bi-dPCS) 200. The power control type energy storage device (ESS) using the lithium ion battery and the supercapacitor, The ESS is managed by collecting data on the load side during the power generation and consumption of the Bi-dPCS, converts the collected information into a current command, and controls the Bi-dPCS by the DSP controller And an energy management device (EMS, 700) in which a setting program for commanding the battery is mounted, thereby stabilizing a storage device adaptable to a normal load and a rapid load and enabling efficient battery control, The combination of capacitors can buffer power fluctuations of abrupt new renewable energy according to the external environment, By taking advantage of the super-capacitor to the wind power generation has a sharp output variations may be extended according to the value of expensive lithium battery life. In addition, it can monitor and manage the situation of on-site ESS such as ESS charge amount, discharge amount, peak cutting amount by time zone remotely. There is a unique effect of effectively reducing the electricity bill by applying the customer power supply system such as building, book area, and factory.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Renewable energy generation facility 110: Connection class
200 Bi-directional power converter (Bi-dPCS) 210: Rectifier
220: 3-level inverter 300: Battery management device (BMS)
400: Power storage device (PSS) 410: Lithium ion battery
420: super capacitor 500: grid side power converter
510: first sensor (IoT) 520: second sensor (IoT)
600: DSP controller 700: Energy management device (EMS)
710: Interface unit

Claims (4)

A renewable energy generation facility 100 for generating electric energy using solar energy and wind energy; The method of claim 1, further comprising: charging and power-converting the DC power rectified by the commercial power source (AC) of the new and renewable energy generation facility and the system to a power storage device (PSS) (Bi-dPCS) 200 for controlling the charging / discharging of the PSS through communication control with a battery management system (BMS) for monitoring and protecting the PSS, A battery management device (BMS) 300 that maintains the balance of the PSS cells through communication control with the Bi-dPCS and serves to stop charging when the input voltage becomes a certain value or less; A lithium ion battery 410 and a plurality of supercapacitor 420 for charging the renewable energy generation facility and the rectified commercial power source by the Bi-dPCS and the BMS are connected in series or in parallel so as to correspond to the system load A power storage device (PSS, 400) having one pack; A first sensor 510 for converting the DC power supplied from the renewable energy generation facility to AC power for supplying the load to the load, a normal load and a rapid load for the load side to be transmitted to the DSP controller, (500) having a power converter (520); The Bi-dPCS 200 controls the Bi-dPCS to control the Bi-dPCS for controlling the charging / discharging of the PSS and the bidirectional power conversion based on the information of the sensors. In the case of the first sensor 510, ) Is directly converted into AC power through the 3-level inverter 220 built in the Bi-dPCS and supplied to the load or supplied to the grid side power conversion device, A second controller 520 for controlling the Bi-dPCS to convert the DC power charged in the supercapacitor of the PSS to direct AC power to be supplied to the load or to be supplied to the system power converter, (ESS) including a power storage unit (600)
Also, the ESS controller collects data on the load side during the power production and consumption of the ESS, manages the ESS, converts the collected information into a current command having a function of an upper controller of the DSP controller for controlling the Bi-dPCS, And an energy management device (EMS) 700 on which a setup program for issuing a management command to the DSP controller is mounted. The power control type energy management system using the lithium ion battery and the supercapacitor.
The method according to claim 1,
The energy management apparatus (EMS) 700 is characterized in that any one of Arduino and Raspberry Pi is installed in the energy management system to collect information communicated between the Bi-dPCS and the BMS Power control type energy management system using lithium ion battery and super capacitor.
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