• Title/Summary/Keyword: multi-agent system

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Implementation of Out-of-Step Detection Algorithm based on Multi-Agent System using EMTP-MODELS (EMTP-MODELS를 이용한 Multi-Agent System 기반의 동기탈조 검출 알고리즘 구현)

  • Lee, Byung-Hyun;Yeo, Sang-Min;Lee, You-Jin;Sung, No-Kyu;Kim, Chul-Hwan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.4
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    • pp.537-542
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    • 2008
  • The protection against transient instability and consequent out-of-step condition is a major concern for the utility industry. Unstable system may cause serious damage to system elements such as generators and transmission lines. Therefore, out-of-step detection is essential to operate a system safely. Also, a multi-agent system is one that consists of a number of agents, which interact with one another. Multi-agent systems(MAS) can offer the flexibility and the adaptability to the previous algorithm. In this paper, the detection algorithm of out-of-step is designed by multi-agent system and implemented by EMTP-MODELS. To verify performance of the proposed algorithm based on multi-agent system, simulations by EMTP have been carried out.

Implementation of Frequency Relaying Algorithm based on Multi-Agent System using EMTP-MODELS (EMTP-MODELS를 이용한 Multi-Agent System 기반의 주파수 계전 알고리즘 구현)

  • Lee, Byung-Hyun;Kim, Chul-Hwan;Yeo, Sang-Min
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.56 no.12
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    • pp.2072-2077
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    • 2007
  • The primary objective of all power systems is to maintain the reliability and to minimize outage time for fault or the others. The frequency relaying algorithm perceives a variation of system frequency and thereafter detects the unbalance between generation and load. A multi-agent system is composed of multiple interacting computing elements that are known as agents. In this paper, frequency relaying algorithm is designed by multi-agent system and is implemented by EMTP-MODELS. To verify performance of the frequency relaying algorithm based on multi-agent system, simulations by EMTP have been carried out.

Multi-Agent System Application Method in Distribution Automation System (배전자동화 시스템에서의 Multi-Agent System 적용방안)

  • Lim, Il-Hyung;Choi, Myeon-Song;Lee, Seung-Jae
    • Proceedings of the KIEE Conference
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    • pp.6-8
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    • 2008
  • 본 논문은 전력IT 분야에 새롭게 큰 관심이 집중되고 있는 Multi-Agent System 적용에 대하여 배전자동화 시스템에서의 적용방안을 제안하고 있다. IEEE Working Group에서 Power System에 적용되는 Multi-Agent에 대한 연구를 진행하였다. 이 내용을 기반으로 배 전자동화 시스템에서는 어떻게 Multi-Agent System이 적응되어야 하는지에 대한 방법을 제안하고 있다.

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The Automatic Coordination Model for Multi-Agent System Using Learning Method (학습기법을 이용한 멀티 에이전트 시스템 자동 조정 모델)

  • Lee, Mal-Rye;Kim, Sang-Geun
    • The KIPS Transactions:PartB
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    • v.8B no.6
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    • pp.587-594
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    • 2001
  • Multi-agent system fits to the distributed and open internet environments. In a multi-agent system, agents must cooperate with each other through a coordination procedure, when the conflicts between agents arise. Where those are caused by the point that each action acts for a purpose separately without coordination. But previous researches for coordination methods in multi-agent system have a deficiency that they cannot solve correctly the cooperation problem between agents, which have different goals in dynamic environment. In this paper, we suggest the automatic coordination model for multi-agent system using neural network and reinforcement learning in dynamic environment. We have competitive experiment between multi-agents that have complexity environment and diverse activity. And we analysis and evaluate effect of activity of multi-agents. The results show that the proposed method is proper.

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Application of Multi-Agent System to Over Current Protective Relaying System (과전류 보호계전 시스템에의 Multi-Agent System 응용)

  • Chang, Choong-Koo;Min, Byung-Un;Lee, Seung-Jae
    • Proceedings of the KIEE Conference
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    • pp.209-211
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    • 2000
  • This paper presents a Multi-Agent system for setting and coordination of overcurrent protective devices in the distribution system. The simulation model shows its feasibility in which KQML is used for communication among agents. The proposed system could make it possible to keep the protection system in the optimal state all the time.

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Cooperative Control of the Multi-Agent System for Teleoperation (원격조종 다개체 로봇의 협동제어)

  • 황정훈;권동수
    • 제어로봇시스템학회:학술대회논문집
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    • pp.154-154
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    • 2000
  • The cooperative strategy for the teleoperated multi-agent system is presented. And this scheme has been applied to the teleoperated robot soccer system that is newly proposed. For the teleoperated robot soccer system, we made mapping functions to control a 2-wheeled mobile robot using a 2 DoF stickcontroller. The simulation with a real stickcontroller has been evaluated the performance of the proposed mapping function. Then, the basic cooperation strategy has been tested between teleoperated robot and autonomous robot It is shown that the multi-agent system for teleoperation can have a good performance for a job Like a scoring a goal

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ADE: Agent Development Environment for Engineering (ADE : 공학 에이전트 개발 환경)

  • 구본석;이수홍
    • Korean Journal of Computational Design and Engineering
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    • v.8 no.1
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    • pp.55-63
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    • 2003
  • ADE i,1 a software tool for the design and implementation of multi-agent systems. ADE allows a designer to draw a multi-agent system graphically, specify the necessary properties, and deploy their applications. ADE offers a set of intuitive, easy to use interfaces that enable a designer to completely specify the agents and agent interactions in a multi-agent system. In this environment, JATLite/sup [1]/ is improved significantly. Furthermore, ADE provides a unique set of features for a multi-agent system design tool. An agent description method based on Design roadmap/sup [2]/ theory, a hierarchy of agents, and a fully featured Java-based Graphical User Interface are combined in ADE. This distinct combination of features mates ADE stand out among the existing multi-agent system design tools. This paper presents the research related to the application of the ADE, along with descriptions of its design and implementation.

Action Selection of Multi-Agent by dynamic coordination graph and MAX-PLUS algorithm for Multi-Task Completion (멀티 태스크 수행을 위한 멀티에이전트의 동적 협력그래프 생성과 MAX-PLUS 방법을 통한 행동결정)

  • Kim, Jeong-Kuk;Im, Gi-Hyeon;Lee, Sang-Hun;Seo, Il-Hong
    • Proceedings of the IEEK Conference
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    • pp.925-926
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    • 2006
  • In the multi-agent system for a single task, the action selection can be made for the real-time environment by using the global coordination space, global coordination graph and MAX-PLUS algorithm. However, there are some difficulties in multi-agent system for multi-tasking. In this paper, a real-time decision making method is suggested by using coordination space, coordination graph and dynamic coordinated state of multi-agent system including many agents and multiple tasks. Specifically, we propose locally dynamic coordinated state to effectively use MAX-PLUS algorithm for multiple tasks completion. Our technique is shown to be valid in the box pushing simulation of a multi-agent system.

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Design of a Multi-Agent System Architecture for Implementing CPFR (CPFR 구현을 위한 다중 에이전트 시스템 구조설계)

  • Kim, Chang-Ouk;Kim, Sun-II;Yoon, Jung-Wook;Park, Yun-Sun
    • Journal of Korean Institute of Industrial Engineers
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    • v.30 no.1
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    • pp.1-10
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    • 2004
  • Advance in Internet technology has changed traditional production planning and control methods. In particular, collaborations between participants in supply chains are being increasingly addressed in industry for enhancing chain-wide productivity. A representative paradigm that emphasizes collaboration in production planning and control is CPFR(Collaborative Planning, Forecasting and Replenishment). In this paper, we present a multi-agent system architecture that supports the collaborations specified in CPFR. The multi-agent system architecture consists of event manager, data view agent, business rule agent, and collaboration agent. The collaboration agent systematically controls negotiation between supplier and buyer with the aid of collaboration protocol and blackboard. The multi-agent system has been implemented with EJB(Enterprise Java Beans).

Multi-Agent System having Adaptive Over Current Protection Function for Power Distribution Systems (멀티 에이전트 시스템 (Multi-Agent System)을 이용한 배전계통의 적응 과전류보호)

  • Chang, Choong-Koo;Lee, Seung-Jae;Lim, Dong-Jin
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.50 no.8
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    • pp.365-372
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    • 2001
  • This paper presents a new protection concept to achieve the adaptive optimal function by introducing the multi-agent system technology. Making each relay an agent which consists of relay agent module and coordinator module, each agent works autonomously to improve protection capability by cooperating with other agents. It is applied to the overcurrent protection system of the industrial power system in order to show the feasibility of the proposed methodology.

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