Grant-in-Aid for Scientific Research (A)
|Allocation Type||Single-year Grants|
|Research Institution||University of Tokyo|
YOKOYAMA Akihiko University of Tokyo, School of Engineering Associate Professor, 大学院・工学系研究所, 助教授 (30174866)
SAITOH Hiroumi Tohoku University, Faculty of Engineering Associate Professor, 工学部, 助教授 (10202079)
OYAMA Tsutomu Yokohama National University, Faculty of Engineering Associate Professor, 工学部, 助教授 (40160642)
KAKIMOTO Naoto Kyoto University, Faculty of Engineering Lecturer, 工学部, 講師 (70136133)
TAKAHASHI Kazuhiro CRIEPI Vice President (Research), 理事(研究職)
SEKINE Yasuji Science University of Tokyo, Faculty of Engineering Professor, 工学部, 教授 (00010702)
木下 信行 東京電力(株), 電力技術研究所・系統研究室, 室長(研究職)
|Project Period (FY)
1995 – 1997
Completed(Fiscal Year 1997)
|Budget Amount *help
¥7,200,000 (Direct Cost : ¥7,200,000)
Fiscal Year 1997 : ¥1,900,000 (Direct Cost : ¥1,900,000)
Fiscal Year 1996 : ¥5,300,000 (Direct Cost : ¥5,300,000)
|Keywords||Power System / Unstable Phenomina / Animation / System Analysis / Stability Control / Visualization / Simulation / Computer Graphics|
Visualization technique of dynamic phenomena and steady-state condition in large-scale power system has been studied in this research.
1.P-delta map, V-dalta map, Q-delta map and Q-V-delta map are proposed and their 2D animations are developed, where P and Q are active and reactive power through transmission line respectively and V and delta are magnitude and phase angle of node voltage respectively.
2.3D animations of unstable and poorly damped swing phenomena in large-scale power system are developed as shown bellow
(1) animation with vertical pole, height of which represents phase angle or angle speed, and horizontal pipe representing transmission line, diameter, color or moving stripe of which represents active power flow
(2) animation with balloon, diameter and vertical position of which represent stored energy and phase angle of generator respectively, and pipe between balloon and load node representing active power flow through transmission line
(3) animation with vertical pole, height and diameter of which represent node and transmission line respectively and horizontal position of which represents phase angle
(4) animation with disk, diameter and rotation of which show magnitude and phase angle of voltage respectively, and elastic strings representing synchronizing power.
3.Some oscillatory modes of swing phenomena analized through FFT are represented as 3D animations to help us understand physical meanings of complicated power swing phenomena. As a result, it has been made clear that it becomes easy to understand intuitively where what kinds of oscillatory mode appear by looking at the above 3D animation.
4.2D animation is developed to show how coherent generators behave during the period of oscillation in large-scale power system.
5.3D animation are developed for voltage instability phenomena in small model system.