Online Identification of Wide Area Power System Dynamics by Using Multiple Synchronized Phaser Measurements

本研究利用GPS卫星的时间同步信号对多点电压相位进行同步测量，以实现电力系统广域动态特性的在线观测。西部60Hz电力系统中的8个地点和东部50Hz电力系统中的2个地点被选择，所有这些地点都在大学校园中。其结果是，覆盖整个日本的电力系统广域动态特性观测系统（北海道、冲绳除外），以低频的电力波动模式的稳定性为中心，进行了各种电力波动模式的特性分析。2004年度发生了伴随电力系统事故的台风、地震等多起自然灾害，分析了频率变化的宽传播特性，并提出了观测技术 ...更多信息 通过提出耦合振荡模型，并利用观测结果识别模型的系数，作为根据相角波动推定广域稳定性指标的方法，建立了电力系统广域稳定性 *，该结果申请了专利。此外，在与泰国研究人员的讨论中，虽然已经认识到功率振荡已经成为访问中的上面讨论的问题，应用本研究所建立的技术，进行了观测电力系统功率摆动特性的初步实验，泰国进行了。结果，观察到存在稳定性不足的广域振荡模式。该成果将作为国际合作项目推进到具体的研究合作中。在电力产业自由化的形势下，取得了电力交易中的频率控制特性的识别和系统稳定性诊断等重要研究成果。少

In this research, synchronized measurements of the voltage phase of many points are carried out using the time synchronized signal from GPS Satellites for the purpose of carrying out on-line observation of the wide area dynamic characteristics of the power system. Eight places in west 60Hz power system and two places in east 50Hz power system were selected, all of which are in university campuses. As a result, an observation system for power system wide area dynamic characteristics covering the whole Japan (except Hokkaido and Okinawa) was built, Characteristic analysis in various kinds of power swing modes was conducted focusing on the stability of power swing mode with a low frequency.Many natural disasters such as typhoon and earthquakes accompanying power system accidents occurred in 2004 fiscal year, and caused comparatively large-scale disturbances to the power system, where the broad propagation characteristic of frequency change was analyzed Moreover, the technique of observing … More power system wide area stability* was established by proposing a coupled oscillation model and identifying the coefficient of the model as a method of presuming the index of wide area stability, from fluctuation of the phase angle, using an observation result, This result applied as patents.Moreover, in discussion with the researchers of Thailand, while having recognized that a power oscillation has been a problem with an upper discussion on a visit, the technique built by this research was applied and the preliminary experiment which observes the power swing characteristic of the power system of Thailand was carried out. As a result, a wide area oscillation mode with insufficient stability existed have been observed. This result will be advanced to concrete research cooperation as an international joint project.Under the situation where the deregulation of power industry is in progress, the important results of research, such as identification of a frequency control characteristic and system stability diagnosis in electric power dealings, were obtained. Less