【作者】 袁洪；

【导师】 鞠平； 严登俊；

【作者基本信息】 河海大学 ， 电力系统及其自动化， 2003， 硕士

【摘要】 基于GPS的电网动态安全稳定监视与控制系统的研究和应用是当前电力系统自动化领域的前沿课题，它对于提高电网安全稳定运行的水平具有十分重大的理论和实际意义。本文针对当前基于GPS的电网动态安全稳定监控系统中一些关键技术，开展了研究工作。主要内容有： 1．在总结了现有发电机功角测量方法的基础上，提出了利用发电机自有的转速信号实时测量功角的新方法，该方法克服了传统方法精度不高，工程实施难等缺点，并能通用于汽轮发电机和水轮发电机，具有较高的理论和实用价值。 2．采用IP技术进行电力信息的实时传输是电力通信发展的趋势，针对当前电力通信面临多业务综合传输的需求，依据OSI参考模型和TCP/IP协议模型，在不同网络层次上，探讨适用于电力系统的网络通信技术，并给出了具体应用的实现模型和协议。 3．为满足电网动态监控系统中对数据传输的要求，采用了ATM技术和以太网技术相结合的方式，通过全光纤通道，构建了一套实时、可靠的全网相角信息实时传输系统。 4．结合具体工程项目，探讨了发电机功角信息在厂站端的应用，实现了相应的软硬件。 现场运行表明，所提出的发电机功角实时测量方法和实时数据传输的模式，达到了工程要求，为最终实现电网动态安全稳定监视和控制打下了坚实的基础，具有重大的工程应用价值。更多还原

【Abstract】 Along with the growth in interconnections, the complexity of power systems is continually increasing. The stability problem becomes more and more serious. With the PMU(Phasor Measurement Units) based on GPS (Globe Position System), the phase angle of power system is measured, so dynamic behavior of the system is monitored and controlled. Some new applications in the monitoring and control system are presented in this paper. The main contents are followed:1. A new method for measuring the position of the rotor and the real-time rotor angle of the synchronous generator using GPS and tachometer is presented in this paper, which can be easily realized in engineering practice with high accuracy.2. Based on OSI and TCP/IP reference model, the principle and technology of data communication network for the power system are introduced .The scheme of constructing data communication network for dynamic monitoring and control system is expounded.3. A transfer system for PMU data is built based on the Ethernet and ATM technology. In the system, the communication delay is reduced by using the Ethernet switch combined the ATM switch .The error rate is reduced also because the program of the communication is programmed with the Winsock and TCP/IP protocol.4. The applications of PMU data in monitoring substation are given. The hardware and the software are designed and implemented.The validity of these methods studying above has been tested by the application in Henan Provincial Power Company, which meet the requirements of the engineering practice.更多还原