EXPERIMENTAL STUDIES ON STABILITY OF POWER SYSTEMS COMPOSED OF MANY DISPERSED POWER SOURCED USING MICRO-MACHINES

多分散电源微机电力系统稳定性实验研究

• 批准号: 09650318
• 负责人: OHSAWA Yasuharu
• 金额: $ 1.92万
• 依托单位: KOBE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650318/
• 关键词: Power System; Dispersed Power Source; Synchronous Generator; Steady-State Stability; Longitudinal Power System; Looped Power System; 串形系統; 系統安定度

We have for two years done experimental investigation in order to experimentally verify the results of the simulation on the variation of steady-state stability owing to the looped interconnection of longitudinal power systems at the both ends, and to analyze the steady-state stability of more complex power systems including loops. The obtained results and the works to be done in the future are as follows.1. Results of experiments on steady-state stability simulator : The steady-state stability simulator was constructed from extremely small-sized ac generators, fly-wheels, dc motors and transmission line inductors, and longitudinal power systems and looped power systems were constituted. Steady-state stability limits were measured on each system with 3-machine, 4-machine and 5-machine composition. It was ascertained that the looped systems are more stable than the longitudinal systems regardless of the number of machines.2. Results of simulation on complex power systems including loops : Steady-state stability was analyzed by eigenvalue calculation for a top-shaped power system (a looped power system with the both ends interconnected to neighboring power systems) and a ladder-shaped power system (a looped power system with several intermediate points interconnected each other). It was made clear by changing the reactance of the interconnecting lines and calculating the eigenvalues that these power systems possess the characteristics of longitudinal systems and looped systems.3. Studies to be done in the future : In the present studies, all the dispersed power sources are assumed to be a synchronous generator. But in practical power systems, there exist many dispersed power sources, where the dc output power is converted into ac, and interconnected to ac power system. The stability of such power systems is to be analyzed.

为了从实验上验证纵向电力系统两端环路互联对稳态稳定性变化的模拟结果，并分析包含环路的更复杂的电力系统的稳态稳定性，我们进行了两年的实验研究。所得结果和今后需要做的工作如下：1。稳态稳定模拟器实验结果：稳态稳定模拟器由极小尺寸的交流发电机、飞轮、直流电机和传输线电感组成，构成纵向电力系统和环形电力系统。采用3机、4机、5机组成对各系统进行稳态稳定极限测量。结果表明，无论机床数量多少，闭环系统都比纵向系统更稳定。包含环路的复杂电力系统的仿真结果：通过特征值计算分析了顶形电力系统（两端与相邻电力系统互联的环形电力系统）和梯形电力系统（多个中间点相互互联的环形电力系统）的稳态稳定性。通过改变并网线路的电抗并计算其特征值，可以看出这些电力系统具有纵向系统和环状系统的特点。今后需要进行的研究：在目前的研究中，所有的分散电源都假设为一个同步发电机。但在实际的电力系统中，存在许多分散的电源，这些电源将直流输出转换成交流，并与交流电源系统互联。对这种电力系统的稳定性进行了分析。

项目成果

Yasuharu Ohsawa: "Studies on Stability of Power Systems Consisting of Many Dispersed Power Sourced" Proc.of Int.Symp.on Bulk Power System Dynamics and Control IV-Restructuring. 369-373 (1998)

Yasuharu Ohsawa：“由多个分散电源组成的电力系统稳定性研究”Proc.of Int.Symp.on Bulk Power System Dynamics and Control IV-Restructuring。

Y.Ohsawa: "Studies on Stability of Power Systems Consisting of Many Dispersed Power Sources" Proc.of Int. Symp. on Bulk Power System Dynamics and Control IV-Restructuring. 369-373 (1998)

Y.Ohsawa：“由许多分散电源组成的电力系统的稳定性研究”Proc.of Int。

Y.Ohsawa: "Studies on Stability of Power Systems Consisting of Many Dispersed Power Sources" Proc.of Int.Symp.on Bulk Power System Dynamics and Control IV-Restructuring. 369-373 (1998)

Y.Ohsawa：“由许多分散电源组成的电力系统稳定性研究”Proc.of Int.Symp.on Bulk Power System Dynamics and Control IV-Restructuring。