• Proceedings of the KIEE Conference
• /
• 1999.07g
• /
• pp.3051-3053
• /
• 1999

In recent years, it becomes a worldwide trend that the power utilities focus their attention to Demand Side Management. Increasing Electric power consumption, they adopt a direct load management to accomplish low cost and stability of electric supply. Following this trend, KEPCO is researching a Direct Load Control System for Air Conditioner. This Paper presents the development results of the Direct Load Control System to Control electric power consumption of Conditioner in summer period this year.

• Proceedings of the KIEE Conference
• /
• 1993.07a
• /
• pp.45-47
• /
• 1993

Load Management, is originated from efficiency improvement of energy use, or energy conservaion. Traditionally, electric utilities have constructed new power plants to meet the steadily increasing electricity demand. Power development planning, however, is becoming more difficult in the countries like Korea, Japan, and the United States, and increasing concerns about global environmental problems necessitate changes from existing supply-side options based on fossil-fuel to environmentally agreeable supply strategies. This paper discusses the demand side management strategy with emphasis on the concept, implementation scheme, and current practices employed in utilities.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2012.10a
• /
• pp.849-850
• /
• 2012

• KEPCO Journal on Electric Power and Energy
• /
• v.5 no.4
• /
• pp.275-286
• /
• 2019

This paper presents real-time Direct Current (DC) network analysis applications for operation of DC distribution system or DC microgrid. These applications are installed on central Energy Management System (EMS) and provide solutions of DC network operation. To analysis DC distribution network, this paper proposes composition and sequence of applications. Algorithm of applications is presented in this paper. Demonstration tests are performed on DC distribution site in Gochang Power Testing Center of Korea Electric Power Corporation (KEPCO). To verify the performance, developed DC applications installed on EMS. Scenarios for demonstration test of voltage control are presented. Finally, measured data, application output data and simulation data (by PSCAD/EMTDC) are compared and analyze accuracy of applications.

• Journal of Korea Multimedia Society
• /
• v.14 no.1
• /
• pp.103-111
• /
• 2011

Legacy Java card which adapts a Java platform loads and executes an application when electronics power is provided. However, recently the most Java cards are embedded into a mobile terminal as USIM cards, therefore the power is continually provided for the smart cards. In this case, operation of a Java card system needs to consider its operating system to be advanced in memory management, object management and transaction mechanism. In this paper, we present a high performance Java Card system which is able to have efficient installation, loading and execution of application by applying a new memory management of the smart card that has safe power system.

• Proceedings of the KIPE Conference
• /
• 2015.07a
• /
• pp.293-294
• /
• 2015

This paper proposed a design and operation of energy storage system using Zinc-Bromine flow battery. To operate flow battery system with BMS, it uses motor drive system to pump electrolyte. it also needs sensors to check leaking and temperature. The proposed system proves the validity by experiment.

• Proceedings of the KIPE Conference
• /
• 2016.07a
• /
• pp.171-172
• /
• 2016

본 논문에서는 군 주둔지의 전원공급을 위한 이동형 ESS 시스템에 대해서 제안한다. 제안하는 시스템은 군 주둔지와 같이 외부 소음 및 열에 민감한 시스템에서 디젤발전기를 대체하기 위하여 설계되었으며, 배터리 팩, BMS(Battery Management System), EMS(Energy Management System), PCS(Power Conditioning System), PMS(Power Management System), 구조물 그리고 차량체계로 구성된 시스템을 소개한다. 그리고 실험결과에서는 260kWh급의 이동형 ESS의 실차에 장착된 결과를 제시한다.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2016.05a
• /
• pp.229-230
• /
• 2016

The Nuclear Power Plant construction industry has the related to Information-integration field. In this study, the end user developed an Information Management System early in the project, and developed a management structure that systematically integrates and interfaces with information in each life-cycle phase. Particularly this paper related to the construction information of component.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.13 no.6
• /
• pp.523-529
• /
• 2020

Power distribution management system is essential for the efficient management and operation of power distribution networks. The power distribution system is a system that manages the distribution network based on IT, and has been evolving along with the development of the power industry. The current power distribution system is designed to operate at a relatively low network transmission speed based on the independent operation of the main equipment. However, due to distributed resources such as photovoltaic or energy storage devices, which are rapidly increasing in popularity in recent years, the operation of future distribution environments is becoming more complex, and various information needs to be collected in real time. In this study, the requirements of the next-generation power distribution system were derived to overcome the limitations of the existing power distribution system, and based on this, the communication network system and performance requirements for the distribution system were defined. In order to verify the performance of the designed system, a software-based terminal device simulator was developed because it takes excessive time and cost to introduce a large-scale system such as a power distribution system. Using the simulator, a test environment similar to the actual operation was established, and the number of terminal devices was increased up to 1,000. The proposed system was shown to satisfy the requirements to support the functions of the next-generation power distribution system, recording less than 10 % of the communication network bandwidth.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.12 no.1
• /
• pp.157-157
• /
• 1987

Hydro-electric power generation from multi-purpose dams has been playing important roles in the electric power supply network in Korea. Although the total share of hydro power in national electricity supply now becomes very small, the peak-shaving and frequency control capability of hydro power helps the power company enormously in maintaining the quality of power. But since the company that builds and operates the multi-purpose dams in Korea has to sell all the electricity produced to the monopolistic utility, there have been various problems in justifying the investment, designing pricing mechanism, and controlling operations of the power plants. In addition, economic evaluation of the hydro power has been distorted by a variety of reasons and hence it has been very difficult to encourage effective development and utilization of national water resources. To make the problem worse, both parties are public companies with X-inefficiency problems. Thus, changing environment requires to reengineer the system that governs hydro power generation. We address the problems of Korean hydro-electric power generation system in four areas: the investment justification process, the operations decison right of the hydro power plants, the pricing of the purchased-power, and the negotiation of contract revision. Then we propose improvement directions of new hydro-electric power system in view of static and dynamic efficiency, X-inefficiency and equity.