Development of Multiresolution Analyzer for Nonlinear Phenomena in Power Systems in Order to Estimate the Insecure Condition

开发电力系统非线性现象的多分辨率分析仪以估计不安全状况

• 批准号: 06555075
• 负责人: TOYODA Junichi
• 金额: $ 8.64万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555075/
• 关键词: Electric Power System; Status Monitoring; Nonlinear Behavior; Power Flow Fluctuation; Multiresolution Analysis; Parallel Processing; Graphical User Interface; ゆらぎ; カオス・フラクタル

In electric power transmission network, the power flow fluction occurs by the interaction among multiple generators through the line reactance. The power flow fluctuation include hidden nonlinear signal which arise from the discontinuity of system operation. Aim of our research project is focused to find out a key parameter that will show the dynamic behavior of power systems and to develop a prototype of the multiresolution analyzer to estimate the nonlinear signal for identification of the system insecure condition. The major results obtained through the study are as follows.(1) A prototype of the analyzer for electric power flow fluctutation is configured by 4 digital signal processors. This allows parallel processing in a sufficient high speed for the on-line operation.(2) We can estimate the insecure condition of power system by a key parameter obtained by an identification algorithm based on a linear time-invariant model. In addition improvement of the accuracy is confirmed if the nonlinear dynamic characteristics of power systems are taken into account.(3) Experimental test of the prototype analyzer was performed by using a power system analog simulator at Tohoku Electric Power Company. The results of test show that the deterioration of system damping according to the increasing generator output can be detect by the prototype.(4) Man machine interface has been studied which visualizes the power flow fluctuations synchronously collected at multiple locations by the GPS based measurement system of Tohoku Electric Power Company.

在电力传输网络中，多台发电机通过线路电抗相互作用，产生潮流波动。潮流波动中包含了系统运行不连续性所产生的隐含非线性信号。我们的研究项目的目的是找出一个关键的参数，将显示电力系统的动态行为和开发的多分辨率分析仪的原型，估计非线性信号的系统不安全状态的识别。通过研究获得的主要结果如下。(1)用4个数字信号处理器构成了一台潮流波动分析仪样机。这允许以足够高的速度进行并行处理以用于在线操作。(2)通过基于线性时不变模型的辨识算法得到的一个关键参数，可以估计电力系统的不安全状态。此外，如果考虑到电力系统的非线性动态特性，精度的提高也得到了证实。(3)利用东北电力公司的电力系统模拟仿真器进行了原型分析仪的实验测试。试验结果表明，该样机能够检测到系统阻尼随发电机出力增加而发生的变化。(4)研究了东北电力公司基于GPS的测量系统在多个地点同步采集的潮流波动的可视化人机界面。

项目成果

F.Naito, J.Toyoda, T.Sato: ""Required Conditions for Modeling of Dynamic Characteristics of Power System Including AC-DC Converter"" Tech.Meeting on Power Eng.of IEE Japan. PE-95-133. 19-26 (1995)

F.Naito、J.Toyoda、T.Sato：““包括 AC-DC 转换器在内的电力系统动态特性建模的必需条件””日本 IEE 电力工程技术会议。

Y.Miyazaki, H.Saito, J,Toyoda: ""Power Flow Monitoring System for Detection of Nonlinearity in Unstable Conditions"" Annual Conf.of IEE Japan. #1467 (1997)

Y.Miyazaki、H.Saito、J、Toyoda：““不稳定条件下非线性检测的潮流监测系统””IEE 日本年度会议。

F.Naito, J.Toyoda, T.Sato: ""Dynamic Performance of Power System Simulators Including Small Scale Generators"" Annual Conf.of IEE Japan. #1403 (1997)

F.Naito、J.Toyoda、T.Sato：““包括小型发电机在内的电力系统模拟器的动态性能””IEE 日本年度会议。

内藤文信、豊田淳一、佐藤 卓: "小型発電機を含む電力系統シミュレータの動特性" 電気学会全国大会. (発表予定). (1997)

Fuminobu Naito、Junichi Toyoda、Takashi Sato：“包括小型发电机的电力系统模拟器的动态特性”，日本电气工程师学会全国会议（预定报告）（1997 年）。

Y.Murai, H.Saitoh, J.Toyoda: ""Possibility of Adaptive Control Using Power Fluctuation"" Annual Conf.of IEE Japan. #1329 (1995)

Y.Murai、H.Saitoh、J.Toyoda：““利用功率波动进行自适应控制的可能性””IEE 日本年度会议。