Doosan Heavy Industries & Construction Co., Ltd

Other

Doosan Enerbility Co., Ltd.

Ju Young Youn

Young Hoon Rhie

Sung Ku Park

Tae Won Lee

Mi Young Shin

Bo Hyun Ryu

Kil Ho Moon

Hwan Moon

Jwa Young Maeng

In Gab Chang

Tae Hee Kim

Jang Yong You

In Young Chung

Chang Sung Jun

Ju Heung Kim

In Gap Jang

Jang Yong Yoo

Dae Gyo O

Jin Gon Lim

Kong Taek Lim

Woon Yong Choi

A power plant-connected energy storage system maintains frequency quality of power generated and supplied by a power plant. The system includes an electric energy storage unit that includes two or more batteries of different types and is configured to be charged or discharged to improve frequency quality of power output from the power plant; and a power conditioner configured to control of the power output from the power plant and to control charge and discharge at least one of the two or more batteries in accordance with the control of the power output from the power plant. The two or more batteries include a short cycle battery having a relatively short charge/discharge cycle and a long cycle battery having a relatively long charge/discharge cycle.

Power plant-connected energy storage system and method of controlling same

A control device for a power generation system comprising an energy storage system (ESS) and a power plant is provided. The control device includes: a controller configured to compare a supply frequency of a supply power supplied to a consumer with a reference frequency, compare a charge amount of the ESS with a reference charge amount, and control the ESS and the power plant such that the supply power is controlled according to a result of the frequency comparison and a result of the charge amount comparison, an opening degree control device configured to control an opening degree of a steam valve disposed in the power plant by the control of the controller, and a fuel quantity control device configured to control a quantity of fuel injected into the power plant for power generation by the control of the controller.

Apparatus and method for controlling power plant system

A method for predicting consumer power demand uses power consumption data measured over a long term and a power usage pattern immediately before a target time and for controlling ESS charge/discharge of an ESS based on the predicted power demand. A power demand prediction apparatus using the method includes respective components for collecting weather data and data on power used by the consumer; selecting data points according to a preset condition from among data collected by the data collector based on a specific time span; generating long term prediction data for the power demand in the specific time span based on the selected data points; analyzing a power usage pattern immediately before the specific time span and comparing the power usage pattern with the long-term prediction data, to determine whether prediction data correction is required; and correcting the prediction data based on the power usage pattern when correction is required.

Method for predicting power demand and controlling ESS charge/discharge based on the predicted demand, and apparatus using the same

The present disclosure relates to a redox flow battery using an electrolyte concentration gradient, capable of increasing the efficiency of the redox flow battery, and to an operation method thereof. The redox flow battery includes a catholyte tank having an electrolyte inlet at the top thereof and an electrolyte outlet at the bottom thereof and having a partition plate for forming a concentration gradient of a catholyte received therein, an anolyte tank having an electrolyte inlet at the top thereof and an electrolyte outlet at the bottom thereof and having a partition plate for forming a concentration gradient of an anolyte received therein, and a stack for charging and discharging power by receiving the catholyte and the anolyte supplied from the catholyte tank and the anolyte tank.

Redox flow battery using electrolyte concentration gradient and operation method thereof

An energy storage system includes one or more new and renewable energy power stations generating power with a new or renewable energy source, and an energy storage facility including a plurality of energy storage apparatuses to be charged by one of an external power grid supplying power to a power load and the one or more new and renewable energy power stations, and to be discharged to supply the power to the power load, wherein the plurality of energy storage apparatuses have different charging and/or discharging periods.

Energy storage system and management method thereof

A method for managing power of an energy storage system (ESS) connected to renewable energy, the ESS including an energy storage device connected to a power grid, a battery management system (BMS), a power conditioning system (PCS), and one or more renewable energy generation facilities producing electric energy from renewable energy, the steps including of determining a predicted power consumption amount of a power load and a predicted power production amount of the renewable energy generation facility, predicting power production of the renewable energy generation facility based on the stored type and characteristics information of the renewable energy generation facilities, determining whether the energy storage device is fully charged with the power production from the renewable energy generation facility, and controlling charging/discharging operation of the energy storage device according to a charge/discharge schedule.

Method for managing power of energy storage system connected with renewable energy

The present invention relates to an electrolyte-impregnated, reinforced matrix for molten carbonate fuel cells and a manufacturing method thereof. According to the invention, the electrolyte-impregnated matrix, which comprises both the electrolyte and the reinforcing particles including a metal and an oxide, is manufactured by adding the electrolyte, as required per unit cell of a fuel cell, and the reinforcing particles including the metal and the oxide, to a slurry during the matrix preparation step, and subjecting the resulting slurry to a tape casting process. By doing so, the matrix stacking operation is facilitated, and the matrix manufacturing process is simplified. In addition, cracking caused by the difference in thermal expansion coefficient between an electrolyte sheet and the matrix can be suppressed, and thermal shock occurring during operation of the fuel cell stack can be reduced, thus improving the performance and lifetime of the fuel cell.

Reinforced matrix impregnated with electrolytes for molten carbonate fuel cell and fabrication method thereof

Disclosed is a method for manufacturing an electrode, that is, a large-sized cathode, used for a molten carbonate fuel cell. In the disclosed method, a substrate and a pressure plate, used for electrolyte impregnation, are surface-treated so as to control the bending and cracking of the electrode during the impregnation of an electrolyte.

Fabrication method of electrolyte impregnanted cathodes

Disclosed herein is a method of manufacturing an anode for in-situ sintering for a molten carbonate fuel cell, in which an anode green sheet is prepared using a slurry, and then a reinforcing layer is placed on the anode green sheet and then pressed, thereby improving the mechanical stability of a fuel cell stack and the long term stability of an anode, and an anode manufactured using the method.

Growing community of inventors

Yongin-si, South Korea

Ju Young Youn