A Fundamental Research for Dynamic Security Assessment and Knowledge Based Preventive Strategy of Power Systems by Global Monitoring of Electric Power Fluctuations

电力波动全局监测的电力系统动态安全评估和基于知识的预防策略基础研究

• 批准号: 01460128
• 负责人: TOYODA Junichi
• 金额: $ 4.16万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01460128/
• 关键词: Power System; Global Monitoring; Fluctuation; Tie-Line Flow; System Damping; Neural Network; Preventive Control; Economic Load Dispatch; ニュ-ラルネット; 経済負荷配分

The most important objective of operation and control in large-scale power systems is to avoid the blackout in wide area of the systems. In order to achieve this objective, our research project has studied the advanced techniques of dynamic security assessment and preventive control strategy of power systems. Our approach is based on the monitoring of small fluctuations observed on the active power flow of tie-line or the rotor speeds of generators because those fluctuations include the electromechanical modes which are the useful informations for evaluating the system stability. The main results obtained through the project are as follows :1. A combined technique of FFT processing and principle component analysis is developed for systematically extracting the features of electromechanical modes from line flow fluctuations. The application of the developed technique to the field data shows that the technique is effective for detecting the change in the characteristics of modes from the … More small fluctuations.2. A new approach for evaluating the damping effect of power system on the modes is developed. The approach is based on the interesting characteristics that the energy of modes changes with the increase or decrease of total generating power of the system.3. A new type of filter for extracting dominant modes of power systems is devised. This filter can be obtained by using the inherent characteristics of power system network and the covariance matrix of rotor speed fluctuations of generators. There are many applications of the filter to the power system problems such as on-line stability monitoring, fault identification and creation of control signals for power system stabilizer.4. A preventive control strategy for enhancing the stabilizing capability of power systems is proposed which is based on artificial neural network and monitoring of line flow fluctuations. In addition, the scheduling technique of economic load dispatch coordinating. the system economy and stability is developed using the neural network and the fluctuations. Less

在大规模电力系统中，最重要的运行控制目标是避免系统大面积停电。为了实现这一目标，我们的研究项目研究了电力系统动态安全评估和预防控制策略的先进技术。我们的方法是基于对联络线有功潮流或发电机转速的微小波动的监测，因为这些波动包括机电模式，这些模式是评估系统稳定性的有用信息。本课题取得的主要成果如下：1.提出了一种FFT处理与主成分分析相结合的方法，系统地提取了线路流量波动中的机电模式特征。对现场数据的应用表明，该技术能有效地检测…模式特征的变化更多的小幅波动。提出了一种评估电力系统对这些模式的减振效果的新方法。该方法基于模式能量随系统总发电量的增加或减少而变化这一有趣的特性。设计了一种用于电力系统主模提取的新型滤波器。该滤波器可以利用电力系统网络的固有特性和发电机转速波动的协方差矩阵来获得。该滤波器在电力系统在线稳定监测、故障识别、电力系统稳定器控制信号生成等问题中有着广泛的应用。为提高电力系统的稳定能力，提出了一种基于人工神经网络和线路潮流波动监测的预防性控制策略。此外，还研究了经济负荷调度协调的调度技术。利用神经网络和波动来发展系统的经济性和稳定性。较少

项目成果

H. Saitoh, J. Toyoda et al.: ""Detection Technique of System Damping Effect by means of Tie Line Flow Fluctuation Monitiring"" IEE Japan. 109-B. 411-418 (1989)

H. Saitoh、J. Toyoda 等人：“通过联络线流量脉动监测来检测系统阻尼效应的技术””IEE Japan。

L.N.CHEN,H.SUWA,J.TOYODA: "Power Arrival Evaluation Of Bulk System Including Network Constraints Based On Linear Programming Approan" IEEE Tr.on Power systems.6. 37-42 (1991)

L.N.CHEN，H.SUWA，J.TOYODA：“基于线性规划方法的包括网络约束的散装系统的功率到达评估”IEEE Tr.on Power systems.6。

斎藤 浩海,豊田 淳一他3名: "連系線潮流揺らぎを用いた系統制動効果の検出法" 電気学会論文誌B. 109. 411-418 (1989)

Hiromi Saito、Junichi Toyoda 等 3 人：“利用互连线潮流波动的系统控制动态效应的检测方法” 日本电气工程师学会会刊 B. 109. 411-418 (1989)

M.Parsa,J.Toyoda: "Slow-Coherency Based Composite Mode Oscillatory Stabilization by meane of a Hybrid PSS." IEEE Transactions on Power Systems. 4. 1499-1506 (1989)

M.Parsa、J.Toyoda：“通过混合 PSS 实现基于慢相干的复合模式振荡稳定。”

H.Saitoh,J.Toyoda,Y.Kobayashi: "A New Index Extracted From Line Flow Fluctuation To Evaluate Power System Damping" IEEE Transactions on Power Systems. 6. 1473-1479 (1991)

H.Saitoh、J.Toyoda、Y.Kobayashi：“从线流波动中提取的新指数来评估电力系统阻尼”IEEE 电力系统汇刊。