Out-of-step protection fundamentals and advancements
Out-of-step protection fundamentals and advancements
复制标题
失步保护的基本原理和进展
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
D. Tziouvaras
中科院分区：
文献类型：
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作者：
D. Tziouvaras
电力系统在运行过程中会受到大范围或小范围的干扰。加载条件的微小变化不断发生。电力系统必须适应这些变化的条件，并在期望的电压和频率范围内继续令人满意地运行。电力系统的设计应能承受较大类型的干扰，如故障、大型发电机的损耗或线路切换。某些系统干扰可能导致发电机与公用事业系统的其余部分或相邻公用事业的互联电力系统之间失去同步。如果发生这种失同步情况，必须立即将异步运行的发电机或系统区域分开，以避免大范围的停电和设备损坏。本文介绍了输电系统失步保护的原理和应用基础。我们还讨论了最近在失步跳闸和阻塞保护功能设计上的改进，这些功能提高了电力系统的安全性和可靠性。此外，我们使用EMTP和Matlab仿真演示了失步现象和距离继电器元件的行为。
Power systems are subjected to a wide range of small or larger disturbances during operating conditions. Small changes in loading conditions occur continually. The power system must adjust to these changing conditions and continue to operate satisfactorily and within the desired bounds of voltage and frequency. The power system should be designed to survive larger types of disturbances, such as faults, loss of a large generator, or line switching. Certain system disturbances may cause loss of synchronism between a generator and the rest of the utility system, or between interconnected power systems of neighboring utilities. If such a loss of synchronism occurs, it is imperative that the generator or system areas operating asynchronously are separated immediately to avoid widespread outages and equipment damage. In this paper we describe the philosophy and application fundamentals of out-of-step protection in transmission systems. We also discuss recent enhancements in the design of out-of-step tripping and blocking protection functions that improve the security and reliability of the power system. In addition, we demonstrate the out-of-step phenomena and distance relay element behavior using EMTP and Matlab simulations.