KR102344715B1 - System for electronic power management of transmission system - Google Patents

Abstract

A transmission power management system of a transmission power system is provided. According to an embodiment of the present invention, the transmission power management system of the transmission power system comprises: first to n^th power generation devices for generating power through a renewable energy source; first to n^th power storage devices individually connected to the first to n^th power generation devices to charge and discharge power generated in the first to n^th power generation devices; a transmission power storage device configured to charge and discharge power of the transmission power system; and an integrated control device configured to control charging and discharging capacities of the first to n^th power generation devices and the transmission power storage device according to a power amount, a power amount of the transmission power system, and a power usage amount produced through the renewable energy source. Charging/discharging capacities and charging/discharging period control strategies of the power storage devices are optimized to increase power amount control efficiency of the transmission power system.

Description

SYSTEM FOR ELECTRONIC POWER MANAGEMENT OF TRANSMISSION SYSTEM

The present invention relates to a transmission power stabilization system, and more particularly, to a transmission power management system capable of stabilizing transmission power by efficiently controlling an output fluctuation of a renewable energy source.

Recently, the use of fossil fuels, which is a major energy source, has intensified restrictions on its use due to side effects such as climate change, and along with this, new and renewable energy is in the spotlight due to the depletion of coal and oil. In particular, the importance of renewable energy generation capable of producing environmentally friendly electricity and supplying the produced electricity in a stable and efficient manner is emerging.

However, since the output of renewable energy sources such as wind power, hydropower, and solar power varies according to the weather, the surrounding environment, and the power generation time, the amount of power generated by the renewable energy generation rapidly varies depending on variables such as the environment and time. You have to deal with changing circumstances. For example, in the case of solar power generation or wind power generation, the amount of insolation and wind power continuously changes according to weather and time zone, and accordingly, the amount of power generated by each energy source also changes from moment to moment.

Accordingly, in controlling the amount of power transmitted in the transmission system to which the renewable energy generation devices are linked, the variation in the amount of power generation of the renewable energy generation devices affects the frequency and voltage size change of the transmission system, and as the frequency and voltage fluctuations increase, The risk of overcurrent increases and the quality of wattage control is also degraded.

Accordingly, as an alternative to stably controlling the output fluctuations of the transmission system to which the renewable energy generation devices are linked, a method of additionally constructing and controlling energy storage devices including batteries in the transmission system is proposed. became

A power control method using an energy storage device is a method of controlling the power flow of a power transmission system connection point to fluctuate within a certain range by charging or discharging the generated power in real time to the power transmission system in response to the output change of the renewable energy power generation devices. to be.

However, the energy storage devices associated with the conventional renewable energy source had to be different in the storage capacity, the buffer period, the service life, the discharge period, the maximum and the minimum amount of power of the battery, and the like. Accordingly, batteries having different capacities and different maximum and minimum standard wattages, etc., had no choice but to operate the batteries by reducing the charging ratio and the charging period to prevent accidents such as overcharging.

As such, if the charge/discharge capacity and charge/discharge period of the energy storage devices are not efficiently managed, the power management efficiency of the power transmission system is inevitably reduced, and the battery life of the energy storage devices is inevitably adversely affected. Accordingly, there is a further demand for a method for improving the power management efficiency and stability of the power transmission system linked to the renewable energy source.

An object of the present invention is to solve the above problems, and it is an object of the present invention to provide a transmission power management system capable of optimizing a charging/discharging capacity and a charging/discharging period control strategy of power storage devices.

In addition, to provide a transmission power management system that can accurately predict and control the charging/discharging period and storage capacity of power storage devices in consideration of the amount of electricity in the transmission system, the amount of generation of new and renewable energy sources, and the charging capacity of power storage devices. There is a purpose.

Another object of the present invention is to provide a transmission power management system capable of selectively controlling the charging and discharging capacities of power storage devices by deriving information on the amount of power generation and power usage of new and renewable energy sources.

The power transmission power management system of the power transmission system according to an embodiment of the present invention for achieving the technical problem as described above is the first to nth power generation devices, the first to nth power generation devices for generating power through a renewable energy source through the first to n-th power storage devices respectively connected to the first to n-th power storage devices for charging and discharging power generated from the first to n-th power generation devices, transmission power storage devices for charging and discharging power of the power transmission system, and new and renewable energy sources and an integrated control device for controlling the charging and discharging capacities of the first to n-th power generation devices and the power transmission power storage device according to the amount of power produced, the amount of power in the power transmission system, and the power usage.

The integrated control device according to an embodiment of the present invention sets the amount of electricity produced on the day and the amount of grid electricity on the basis of the average amount of electricity production and the average amount of grid electricity of the previous day for a predetermined period at each predetermined time point, and according to the amount of electricity produced and grid electricity on the day A charging/discharging capacity and a charging/discharging period for initial operations of the transmission power storage device and the first to nth power storage devices are respectively set.

The power transmission power management system of the power transmission system according to the embodiment of the present invention having the various technical features as described above can improve the power control efficiency of the power transmission system by optimizing the charge/discharge capacity and charge/discharge period control strategy of the power storage devices. have.

In addition, the transmission power management system of the present invention accurately predicts and controls the charging and discharging periods and capacities of the power storage devices, thereby improving operational stability and user satisfaction of the transmission power management system.

In addition, the transmission power management system of the present invention can further improve the power control and operation efficiency of the transmission system by selectively controlling the charging and discharging capacities of the power storage devices according to the generation amount and power usage of the renewable energy source.

1 is a block diagram illustrating a transmission power management system according to an embodiment of the present invention.
FIG. 2 is a block diagram specifically illustrating the integrated control device of FIG. 1 .
FIG. 3 is a control operation flowchart illustrating a method for setting a charge/discharge capacity of the calculation processing unit and the capacity setting unit of FIG. 2 .
FIG. 4 is a control operation flowchart illustrating a method of correcting charge/discharge capacity and correcting period of the correction calculator shown in FIG. 2 .
FIG. 5 is a control operation flowchart for explaining a method of compensating for charging/discharging capacity and a period of the data processing unit and the correction calculating unit shown in FIG. 2 .

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, a transmission power management system of a transmission system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a transmission power management system according to an embodiment of the present invention.

Referring to FIG. 1 , the transmission power management system of the transmission system includes first to n-th power generation devices P1 to Pn, first to n-th power storage devices SD1 to SDn, transmission power storage device (ES), and It includes an integrated control unit M1. Here, n is a natural number greater than or equal to 1.

The first to n-th power generation devices P1 to Pn generate power through a renewable energy source, and at least one of the generated power is electrically connected to the transmission system or the first to n-th power storage devices SD1 to SDn. supplied to the power storage of

Specifically, the first power generation device P1 generates power through a renewable energy source such as wind power, hydropower, tidal power, geothermal power, or solar power, and transmits the generated power under the control of the integrated control device M1. It is supplied to the grid or is supplied to the linked first power storage device SD1. In addition, the n-th power generation device (Pn) also supplies the power produced by the renewable energy source to the power transmission system under the control of the integrated control device (M1) or to the linked n-th power storage device (SDn). .

The first to n-th power storage devices SD1 to SDn are respectively connected one-to-one with the first to n-th power generation devices P1 to Pn, and power generated from the first to n-th power generation devices P1 to Pn, respectively. is charged or discharged to the power transmission system according to the control of the integrated control device (M1). Specifically, the first power storage device SD1 is electrically connected to the first power generation device P1, and according to the charge/discharge set capacity and charge/discharge period information from the integrated control device M1, the first power generation device P1 ) to charge the generated power or to discharge the charged power to the power transmission system. In addition, the n-th power storage device (SDn) is also electrically connected to the n-th power generation device (Pn), according to the charge/discharge set capacity and charge/discharge period information from the integrated control device (M1) n-th power generation device (Pn) It is possible to charge the generated power or discharge the charged power to the power transmission system. Here, the power storage capacity of each of the first to nth power storage devices SD1 to SDn may be different from each other. That is, each of the first to nth power storage devices SD1 to SDn has different power storage capacities depending on its own battery capacity, usage period, battery life, charge/discharge delay error, and the like.

The transmission power storage device (ES) is electrically connected to the transmission system, and charges or discharges power of the transmission system according to the charging/discharging set capacity and charging/discharging period information from the integrated control device (M1). The transmission power storage device (ES) is configured to charge or discharge power of the transmission system, and it is preferable that the power storage capacity is larger than that of the first to nth power storage devices SD1 to SDn. The transmission power storage device ES and each of the first to nth power storage devices SD1 to SDn may be configured to include an Energy Storage Device (ESD), an Energy Storage System (ESS), or the like.

The integrated control device M1 includes the first to nth power storage devices SD1 to SDn and transmission power according to the amount of power produced through the renewable energy source, the amount of power in the power transmission system, power consumption, average power production, average power consumption, etc. Controls the charging and discharging capacity and charging/discharging period of the storage device (ES).

Specifically, the integrated control device M1 analyzes and uses the average electricity production and average grid electricity amount of the previous day (for example, the previous 3 to 7 days) for a predetermined period at a predetermined specific time point, and uses the same day's electricity generation and system Predict the amount of power. And, for the initial operation of the transmission power storage device (ES) and the first to n-th power storage devices (SD1 to SDn), each power storage device (ES, SD1 to SDn) according to the predicted amount of production power and grid power on the day. The charging/discharging capacity and charging/discharging period are set for each. Accordingly, each of the power storage devices ES, SD1 to SDn starts charging and discharging operations in units of a predetermined period according to the charge/discharge set capacity and charge/discharge period information from the integrated control device M1.

The integrated control device M1 controls the amount of power production and power transmission system by the first to nth power generation devices P1 to Pn during the period in which the charging and discharging operations are performed for each power storage device ES, SD1 to SDn, respectively. It is detected and analyzed for each preset time period. And, according to the detected first to nth power generation devices (P1 to Pn) and the amount of power in the power transmission system, the charge/discharge set capacity and charge/discharge period information for each power storage device (ES, SD1 to SDn) are displayed in real time. Correct. Accordingly, each of the transmission power storage device ES and the first to nth power storage devices SD1 to SDn is charged in units of a predetermined period in response to the charge/discharge set capacity and charge/discharge period information that are corrected and received for each predetermined time period. and a discharging operation.

The integrated control unit M1 analyzes and predicts the average power production and average grid power for the next days (eg, the next 3 to 7 days). And, according to the analysis and predicted results, charge/discharge set capacity and charge/discharge period information of each power storage device (ES, SD1 to SDn) may be additionally compensated and transmitted to each power storage device (ES, SD1 to SDn) . Accordingly, the integrated control device M1 responds to changes in power production on the following days in consideration of the charge/discharge capacity and charge/discharge characteristics of each power storage device (ES, SD1 to SDn), thereby stably maintaining the power of the power transmission system. have.

In addition, the integrated control unit M1 analyzes and predicts the power consumption for the following days. And, according to the analysis and predicted results, charge/discharge set capacity and period information of each power storage device (ES, SD1 to SDn) may be additionally compensated and transmitted to each power storage device (ES, SD1 to SDn).

FIG. 2 is a block diagram specifically illustrating the integrated control device of FIG. 1 .

The integrated control device 100 illustrated in FIG. 2 includes a power amount detection unit 101 , a calculation processing unit 102 , a capacity setting unit 103 , a correction calculation unit 104 , a database 105 , a communication unit 106 , and a data processing unit. (107).

The wattage detection unit 101 detects the wattage of the power transmission system and the output wattage of each of the first to nth power generation devices P1 to Pn through a plurality of power converters and current converters.

The power amount detection unit 101 shares information on the amount of power of the power transmission system for each time period and the output power amount information of each of the first to nth power generation devices P1 to Pn with the database 105, the communication unit 106 and the data processing unit 107 and the like. and save

The calculation processing unit 102 analyzes the average power production and the average system power for the previous days (eg, 3 to 7 days before) for a predetermined period. Specifically, the arithmetic processing unit 102 reads from the database 105 the amount of power each generated from the first to n-th power generation devices P1 to Pn during a preset previous day at a preset time point. Then, the average amount of electricity produced during the previous 3 or 7 days is analyzed. In addition, the arithmetic processing unit 102 reads the amount of electricity transmission grid for the previous day set in advance from the database 105, and analyzes the average amount of grid electricity.

The capacity setting unit 103 sets the average power production and average system power for the previous day set in advance for each power storage device (ES, SD1 to SDn) for each power storage capacity, charging state, or charging/discharging delay period such as charging/discharging. It is distributed in proportions according to the characteristics. Then, according to the distribution result, charging and discharging capacity and charging and discharging period information are set for each power storage device (ES, SD1 to SDn). The capacity setting unit 103 generates and transmits charge/discharge set capacity and charge/discharge period information for each power storage device (ES, SD1 to SDn) at each preset specific time point (eg, 0 o’clock or 12 o’clock). , it is possible to control initialization driving of each of the power storage devices ES and SD1 to SDn.

The correction calculating unit 104 receives the power production amount and power amount of the transmission system for each of the first to n-th power generation devices P1 to Pn detected by the power amount detection unit 101 in real time. Then, the amount of power distributed in a preset period unit (eg, 10 minutes) of the average power production of the previous day is compared and analyzed in real time, detected in real time. The correction operation unit 104 corrects the charge/discharge set capacity and charge/discharge period information of each power storage device (ES, SD1 to SDn) according to the comparative analysis result and transmits it to each power storage device (ES, SD1 to SDn) do.

The data processing unit 107 receives the weather information including the weather forecast through the communication unit 106 at preset specific time points, and uses the weather information for the following days for a predetermined period (for example, the next 3 days to 7 days) Analyze and predict the average power production for At this time, the data processing unit 107 reads the average value information such as temperature, wind speed, and air volume, and the reference value or experimental value of power generation corresponding to the data from the database 105 .

The data processing unit 107 compares and analyzes the average power production for the analyzed and predicted next days in units of a preset period and the amount of electric power that is detected in real-time, which is distributed in units of a preset period. The data processing unit 107 additionally compensates the charging/discharging set capacity and charging/discharging period information for each power storage device (ES, SD1 to SDn) according to the comparative analysis result to each power storage device (ES, SD1 to SDn) send to

On the other hand, the data processing unit 107 analyzes and calculates the average power production for the predicted next days to the power storage capacity, storage state, or charge/discharge characteristics of each power storage device (ES, SD1 to SDn) for each power storage device (ES, SD1 to SDn). It can be distributed according to the ratio. Then, the difference capacity between the charge/discharge set capacities for each power storage device (ES, SD1 to SDn) that is set to be corrected by the correction calculation unit 104 compared to the distributed average production volume is set as a compensation value. The compensation value according to the difference capacity may be additionally compensated for the charge/discharge set capacity for each power storage device (ES, SD1 to SDn).

In addition, the data processing unit 107 may analyze and predict the average power production for each day by dividing the next first day to multiple days (eg, 1, 2, 3 to n days). Accordingly, the data processing unit 107 sequentially compares the predicted average power production for each next day (eg, 1, 2, 3 to n days), and analyzes and detects the difference in the amount of power for each day. And, by setting each day difference power amount as a compensation factor and matching and compensating each according to the charge capacity size, charge state, charge/discharge delay period, etc. of each power storage device (ES, SD1 to SDn), each difference power amount Additional compensation may be provided.

The data processing unit 107 may analyze and predict the average power consumption for predetermined next days at a preset specific point in time by using the weather information.

The data processing unit 107 receives the weather information through the communication unit 106 at preset specific time points, for example, at 9 o'clock, 12 o'clock, and 15:00, and uses the weather information to average power for the following days for a predetermined period. Analyze and forecast consumption. To this end, the data processing unit 107 reads from the database 105 a consumption reference value or an experimental value corresponding to information such as climate, weather, temperature, wind speed, and wind volume for the following days.

The data processing unit 107 compares and analyzes the average power consumption for the predicted and analyzed next days and the power production detected in real time, and the charge/discharge set capacity and charge/discharge period information of each power transmission power storage device (ES, SD1 to SDn) can be controlled by additional compensation.

FIG. 3 is a control operation flowchart illustrating a method of setting a charge/discharge capacity of the calculation processing unit and the capacity setting unit of FIG. 2 .

Referring to FIG. 3 , first, the operation processing unit 102 controls the initial driving of the transmission power storage device ES and the first to n-th power storage devices SD1 to SDn, the amount of generated power Pout_D and the amount of system power. Performs the average value calculation and processing processor (OP) to set At this time, the calculation processing unit 102 analyzes the average power production (nDay(A)) and the average system electricity amount (EDra) of the previous day for a predetermined period, and calculates the average value of the electricity production amount (Pout_D) and the grid electricity amount for one day of the day as the average value. set

Specifically, the arithmetic processing unit 102 calculates the amount of electric power (nDay(A)) produced from the first to nth power generation devices P1 to Pn for 3 to 7 days prior to the preset 0 o'clock as a starting point. It reads from the database 105. Then, the average amount of power (nDay(A)) generated from the first to nth power generation devices P1 to Pn during the previous 3 or 7 days is analyzed. In addition, the arithmetic processing unit 102 reads the preset electric power transmission system wattage (EDra) for the previous 3 or 7 days from the database 105, and analyzes the average system wattage (EDra) for the previous 3 or 7 days. do.

The capacity setting unit 103 includes a processing processor OP for setting the charge and discharge capacities P1, ES, Pn(c_data)) for each power storage device ES, SD1 to SDn, and each power storage device ( The arithmetic processor (C) for setting the charging and discharging periods for each ES, SD1 to SDn) is performed.

Specifically, when the capacity setting unit 103 performs the processing processor (OP) for setting the charging and discharging capacities (P1, ES, Pn(c_data)), the average power production and the average system power for the previous day set in advance, respectively of the power storage devices (ES, SD1 to SDn), the power storage capacity (R(a)), the state of charge, or the charge/discharge delay period, such as the charge/discharge characteristics, are distributed. Then, according to the distribution result Pout_a, the charging and discharging capacities P1, ES, and Pn(C_data) are set for each power storage device ES, SD1 to SDn. Next, the capacity setting unit 103 performs the operation processor (C) for setting the charging and discharging periods, the charging and discharging capacities P1, ES, Pn (P1, ES, Pn ( C_data)), charging and discharging period information may be set for each preset time period to perform a charging or discharging operation.

Accordingly, the capacity setting unit 103 sets the charging/discharging capacity P1, ES, Pn ( c_data)) and the charging/discharging period information, it is possible to control initialization driving of the transmission power storage device ES and the first to nth power storage devices SD1 to SDn.

FIG. 4 is a control operation flowchart illustrating a method for correcting charge/discharge capacity and correcting period of the correction calculating unit shown in FIG. 2 .

2 and 4 , the correction calculator 104 refers to the power production SPn and the power transmission system TPw for each of the first to n-th power generation devices P1 to Pn, and each power storage device. Charge/discharge set capacity (P1, ES, Pn(c_data)) correction processing processor (OP) for primary correction of charge/discharge set capacity (P1, ES, Pn(c_data)) for each (ES, SD1 to SDn) first carry out

Specifically, the correction operation unit 104 is a first to n-th power generation device detected through the power amount detection unit 101 in real time during the period in which the charging and discharging operations are performed for each power storage device (ES, SD1 to SDn). Receives the power production (SPn) for each (P1 to Pn) and the amount of power (TPw) of the transmission system. In addition, the amount of power distributed by the previous day's average power production (nDay(A)) in a preset period unit (eg, 10 minutes) and the current power for each of the first to nth power generation devices P1 to Pn detected in real time The production amount (SPn) is compared and analyzed in a preset period unit (eg, 10 minutes).

Accordingly, the correction operation unit 104 performs the charging/discharging set capacity (P1, ES, Pn (c_data)) correction processing processor (OP) in the process of performing the previous day average power production (nDay ( A)) and the difference between the power production (SPn) and the amount of power (STP(data)) for each set period unit charge/discharge set capacity (P1, ES, Pn (c_data) for each power storage device (ES, SD1 to SDn) ), the charge/discharge set capacities P1, ES, and Pn(c_data) for each power storage device ES, SD1 to SDn are first corrected. The correction calculating unit 104 directly transmits the charge/discharge setting capacity correction data for each of the first-corrected power storage devices ES and SD1 to SDn to each of the power storage devices ES and SD1 to SDn.

On the other hand, the correction calculator 104 calculates the first-corrected charge/discharge set capacity for each power storage device (ES, SD1 to SDn), the power storage capacity (C_data) for each power storage device (ES, SD1 to SDn), The distribution may be performed at a rate according to the charging/discharging characteristics such as the charging state (J_data) or the charging delay period (S_Data).

For example, the correction calculator 104 calculates the charge/discharge set capacity for each power storage device (ES, SD1 to SDn), which is first corrected, for each power storage device (ES, SD1 to SDn), the charge state (J_data, or charge) Each can be distributed according to the state data (SOC data). And by summing the distributed capacity of each power storage device (ES, SD1 to SDn) to the charge/discharge set capacity (P1, ES, Pn(c_data)) for each power storage device (ES, SD1 to SDn), each power The charge/discharge set capacities P1, ES, and Pn(c_data) for each storage device ES, SD1 to SDn may be further corrected. The correction operation unit 104 calculates the charge/discharge setting capacity correction data (JC_data) for each power storage device (ES, SD1 to SDn) that is additionally corrected after the first correction to each power storage device (ES, SD1 to SDn) It can also be sent directly to

In addition, the correction calculation unit 104 first calculates the charge/discharge set capacity for each power storage device (ES, SD1 to SDn) corrected first for each power storage device (ES, SD1 to SDn), the charging delay period (S_Data, or delay period) for each power storage device (ES, SD1 to SDn). data) can be distributed separately. And the distribution capacity for each power storage device (ES, SD1 to SDn) distributed according to the delay period is added to the charge/discharge set capacity (P1, ES, Pn(c_data)) for each power storage device (ES, SD1 to SDn) By doing so, the charge/discharge set capacities P1, ES, and Pn(c_data) for each power storage device ES, SD1 to SDn may be further corrected. The correction calculation unit 104 additionally converts the charge/discharge set capacity correction data Pn(a) for each power storage device ES, SD1 to SDn, which has been further corrected, to each power storage device ES, SD1 to SDn. can be sent directly.

FIG. 5 is a control operation flowchart illustrating a method of compensating for charging/discharging capacity and compensating for a period of the data processing unit and the correction calculating unit shown in FIG. 2 .

2 and 5 , the data processing unit 107 receives weather information (Bw_Data) including a weather forecast through the communication unit 106 at preset specific time points (eg, 09:00), and receives the weather information. It is used to analyze and predict the average power production (Bw) for the following days (eg, the next 3 to 7 days' worth) for a predetermined period. At this time, the data processing unit 107 analyzes the average power production (Bw) for the following days during the predetermined period using at least one weather information of climate, weather, temperature, wind speed, and air volume for the next days during the predetermined period and predict. Here, the average value information such as temperature, wind speed, and wind volume and the corresponding power generation standard value or experimental value may be preset and stored in the database 105 , and the data processing unit 107 provides an average value of temperature, wind speed, wind volume, etc. according to the forecast. The average power generation standard value corresponding to the information is calculated for each day, and the average power production (Bw) for the following days is analyzed.

Then, the data processing unit 107 predicts and analyzes the average power production (Bw) for the next days (eg, the next 3 to 7 days) for the predetermined period in a preset period unit (eg, 10 minutes) The amount of power distributed to , and the power production SPn for each of the first to nth power generation devices P1 to Pn detected in real time are compared and analyzed in a preset period unit (eg, 10 minutes).

The data processing unit 107 sets the amount of power difference between the amount of power distributed by predictive analysis and the amount of power generated (SPn) detected in real time as a first correction value (ES data, P1 data, Pn data) to set each power storage device (ES) , SD1 to SDn) can be additionally distributed and compensated for the set capacity for charging and discharging.

In addition, the data processing unit 107 predicts and analyzes the average power production (Bw) for the following days during the predetermined period in association with the correction calculation unit 104 according to FIG. 4 to each power storage device (ES, SD1 to SDn) Power storage capacity (C_data), charging state (J_data), or charging delay period (S_Data) may be distributed at a rate according to charging/discharging characteristics. Then, by setting the difference capacity between the average amount of production Pn(a) distributed by the correction calculating unit 104 and the amount of electricity distributed by predictive analysis as the second correction value, each of the power storage devices ES, SD1 to SDn Additional distribution and compensation for each charge/discharge set capacity is possible.

In addition, the data processing unit 107 may analyze and predict the average power production nDay(B) for each day by dividing it by the next first day or multiple days (eg, the seventh day). Accordingly, the data processing unit 107 sequentially compares the average power production (nDay(B)) for each next day (eg, day 7), and analyzes and detects the difference in power amount (dc1 to dcn) for each day. . In other words, the difference wattage (dc1) between the next 1st and 2nd days, the difference energies between the 2nd and 3rd days (dc2),... detect not much

Next, the data processing unit 107 matches and corresponds to each day difference power amount dc1 to dcn according to the charge capacity size of each power storage device ES, SD1 to SDn as a first compensation coefficient, so that each difference The charge/discharge capacity of each power storage device (ES, SD1 to SDn) is compensated so that the amount of power is additionally compensated. That is, the data processing unit 107 additionally compensates the charge/discharge capacity of the transmission power storage device (ES) with the largest capacity for the compensation coefficient with the largest difference amount of electric power, and from the compensation coefficient with the largest remaining amount of difference electric power, the storage capacity is large. By sequentially matching the first to nth power storage devices SD1 to SDn in the order, compensation efficiency and power operation stability thereof may be increased according to weather forecast.

On the other hand, the data processing unit 107 matches and corresponds to each day differential power amount (dc1 to dcn) according to the charging state (J_data) of each power storage device (ES, SD1 to SDn) as a first compensation coefficient, each The charge/discharge capacity of each power storage device (ES, SD1 to SDn) is compensated so that the difference in power amount is additionally compensated. That is, the data processing unit 107 additionally compensates the charging/discharging capacity of any one of the power storage devices ES with the smallest current state of charge for the compensation coefficient with the largest amount of difference power, and from the compensation coefficient with the largest remaining amount of difference power Then, by sequentially matching the first to n-th power storage devices SD1 to SDn in the order of which the charging state J_data is small, the compensation efficiency and power operation stability may be increased.

In addition, the data processing unit 107 matches and corresponds to each day difference power amount (dc1 to dcn) according to the charging delay period (S_Data) of each power storage device (ES, SD1 to SDn) as a first compensation coefficient, The charge/discharge capacity of each power storage device (ES, SD1 to SDn) is compensated so that each difference amount of power is additionally compensated. That is, the data processing unit 107 additionally compensates the charge/discharge capacity of any one power storage device ES with the shortest current charge delay period S_Data for the compensation coefficient with the largest difference amount of energy, and the remaining amount of difference energy is the largest. From the large compensation coefficient, the compensation efficiency and power operation stability may be increased by sequentially matching the first to n-th power storage devices SD1 to SDn in the order of the next short charging delay period.

On the other hand, the data processing unit 107 may analyze and predict the average power consumption (Sw_Data) for the following days during a predetermined period at each preset specific point in time by using the weather information.

The data processing unit 107 receives the weather information including the weather forecast through the communication unit 106 at each preset specific time point (eg, 09:00), and uses the weather information for the following days (eg, for a predetermined period) , analyzes and predicts the average power consumption (Sw_Data) for the next 3 days to 7 days). At this time, the data processing unit 107 analyzes the average power consumption (Sw_Data) for the following days during the predetermined period using at least one weather information of climate, weather, temperature, wind speed, and air volume for the next days during the predetermined period. and predict. Here, the power consumption reference value or experimental value corresponding to the average value information such as temperature, wind speed, and wind volume may be preset and stored in the database 105, and the data processing unit 107 determines the temperature, wind speed, wind volume, etc. according to the forecast. The average power consumption reference value corresponding to the average value information is calculated for each day, and the average power consumption (Sw_Data) for the following days is analyzed.

The data processing unit 107 predicts and analyzes the average power consumption (Sw_Data) for the next days during the predetermined period, the power consumption distributed in a preset period unit (eg, 10 minutes), and the first to second detected real-time n The power production (SPn) for each power generation device (P1 to Pn) is compared and analyzed in a preset period unit (eg, 10 minutes).

The data processing unit 107 sets the difference power amount between the power consumption distributed by predictive analysis and the power production SPn detected in real time as a second correction value to set charge/discharge for each power storage device (ES, SD1 to SDn) Additional distributions and compensations can be made to capacity.

On the other hand, the data processing unit 107 predicts and analyzes the average power consumption (Sw_Data) for the next days during the predetermined period in connection with the correction operation unit 104 according to FIG. 4 to each power storage device (ES, SD1 to SDn) Power storage capacity (C_data), charging state (J_data), or charging delay period (S_Data) may be distributed at a rate according to charging/discharging characteristics. Then, by setting the difference capacity between the power consumption amount (Sw_Data) distributed respectively in the correction operation unit 104 and the amount of power distributed by predictive analysis as a second correction value, charging and discharging for each power storage device (ES, SD1 to SDn) Additional distribution and compensation can be made to the set capacity.

In addition, the data processing unit 107 may analyze and predict the average power consumption (Sw_Data) for each day by classifying it for the next first day to multiple days (eg, the seventh day). Accordingly, the data processing unit 107 sequentially compares the average power consumption Sw_Data for each next day (eg, the 7th day), and analyzes and detects the difference in consumption for each day. That is, the difference consumption between the next 1st serving and the 2nd serving, the difference consumption between the next 2nd and 3rd servings, ... The difference consumption between the next n-1 servings and the nth day servings is detected by day.

Next, the data processing unit 107 matches and corresponds to each daily difference consumption according to the size of the charging capacity of each power storage device (ES, SD1 to SDn) as a second compensation coefficient, so that each difference consumption is additionally compensated. Compensates for charge/discharge capacity for each power storage device (ES, SD1 to SDn). That is, the data processing unit 107 additionally compensates for the compensation coefficient with the largest difference consumption to the charge/discharge capacity of the transmission power storage device ES with the largest capacity, and from the compensation coefficient with the largest remaining difference consumption, the storage capacity is large. By sequentially matching the first to n-th power storage devices SD1 to SDn in the sequence, compensation efficiency and power operation stability may be increased according to the amount of power consumed.

On the other hand, the data processing unit 107 matches and corresponds to each daily difference consumption amount as a second compensation coefficient according to the charging state J_data of each power storage device ES, SD1 to SDn, so that each difference consumption amount is added To compensate, the charge/discharge capacity of each power storage device (ES, SD1 to SDn) is compensated. That is, the data processing unit 107 additionally compensates the charging/discharging capacity of any one power storage device ES with the smallest current state of charge for the compensation coefficient with the largest difference consumption, and from the compensation coefficient with the largest remaining difference consumption Then, by sequentially matching the first to n-th power storage devices SD1 to SDn in the order of which the charging state J_data is small, the compensation efficiency and power operation stability may be increased.

In addition, the data processing unit 107 matches and corresponds to each daily difference consumption amount as a second compensation coefficient according to the charging delay period S_Data of each power storage device ES, SD1 to SDn, so that each difference consumption amount is The charge/discharge capacity of each power storage device (ES, SD1 to SDn) is compensated for additional compensation. That is, the data processing unit 107 additionally compensates the charging/discharging capacity of any one power storage device ES with the shortest current charging delay period S_Data for the compensation coefficient with the largest difference consumption, and the remaining difference consumption is the largest. From the large compensation coefficient, the compensation efficiency and power operation stability may be increased by sequentially matching the first to n-th power storage devices SD1 to SDn in the order of the next short charging delay period.

In the above, the present invention has been shown and described in relation to a specific preferred embodiment, but the present invention is variously modified and changed within the limits that do not depart from the technical characteristics or field of the present invention provided by the following claims. It will be apparent to one of ordinary skill in the art that

P1 to Pn: first to nth power generation devices
SD1 to SDn: first to nth power storage devices
ES: Transmission Power Storage
M1: integrated control unit

Claims (6)

In the power transmission power management system of a power transmission system to improve the control and operation efficiency of the power transmission system,
The transmission power management system of the transmission system,
First to n-th power generation devices (P1 to Pn) for generating electric power through a renewable energy source and;
first to nth power storage devices (SD1 to SDn) respectively connected to the first to nth power generation devices to charge and discharge the power generated by the first to nth power generation devices;
Transmission power storage (ES) for charging and discharging power of the power transmission system; and
By controlling the charging and discharging capacities of the first to nth power generation devices and the power transmission power storage device according to the amount of power produced through the renewable energy source, the amount of power of the power transmission system, and the amount of power used, the amount of power of the power transmission system and The first to n-th power generation devices are each detected and stored in a database and a data processing unit, the power amount detection unit 101, and the average power production and average system power for the previous day during a preset period are stored in a database ( 105) and an arithmetic processing unit 102 that reads and analyzes, and the transmission power storage device and the first to nth power storage devices based on the average power production and average grid power for the previous day during the preset period. A capacity setting unit 103 that generates and transmits charge/discharge set capacity and charge/discharge period information, and the first to n-th power storage devices according to a comparison result between the average power production for the previous day and the power production detected in real time A correction calculating unit 104 for correcting the charging/discharging capacity and charging/discharging period information of Receives weather information including weather forecast through a correction calculating unit 104 that compensates for the charging/discharging capacity and charging/discharging period information of the device and the communication unit 106 at preset specific points in time, and using the weather information for a predetermined period of time. Analyze and predict the average power production for the next days, and analyze and predict the average power consumption for the predetermined next days at a preset specific point using weather information, and predict and analyze the average power consumption for the next day An integrated control device including a data processing unit 107 for compensating and controlling the charging/discharging set capacity and charging/discharging period information of each power transmission power storage device (ES, SD1 to SDn) by comparing and analyzing the detected power production (M1) is composed of,
The integrated control device sets the amount of electricity produced on the day and the amount of grid electricity on the basis of the average amount of electricity production and the average amount of grid electricity of the previous day for a preset period at each predetermined time point, and the transmission power storage device according to the amount of electricity produced and the amount of grid electricity on the day and set the charge/discharge capacity and the charge/discharge period for the initial operation of the first to nth power storage devices, respectively, and set the first to nth power generation devices and the power amount of the power transmission system for each preset time period. and correcting the charging/discharging setting capacity and charging/discharging period information of the power transmission power storage device and the first to nth power storage devices according to the detected power production by each of the first to nth power generation devices and the amount of power in the power transmission system Transmission power management system of the transmission system, characterized in that.
where n is a natural number.
delete delete The method of claim 1,
The integrated control device is
Analyzes the average power production and average system power for the next days, and corrects charge/discharge set capacity and charge/discharge period information of the transmission power storage device and the first to nth power storage devices according to the analysis result transmission power management system of the power transmission system.
The method of claim 1,
The integrated control device is
Power transmission in a power transmission system, characterized in that the power consumption for the next days is analyzed, and the charging/discharging set capacity and charging/discharging period information of the power transmission power storage device and the first to nth power storage devices are corrected according to the analysis result power management system.







delete

Images