Elements of Tuning a Power System Stabilizer for NERC Compliance

R. Schaefer, Kiyong Kim
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Abstract

Regional requirements for NERC performance compliance varies throughout the United States. Where applicable, the generator and excitation system are required go through a series of tests for model validation. These tests can be quite time consuming and expensive. Not all paper mills are required to comply, but some may be directed to do so by the utility because of their machine's size, its relative interconnection to the system, and how and where the generator output is directed. [1] One feature for modern excitation systems is a Power System Stabilizer (PSS). The PSS is used on machines 25 MVA or larger where power system stability issues develop on voltage-weak systems and where NERC compliance applies. Power system stability is generally an issue in the western United States depending upon the power plant's location. The PSS augments the control of the excitation system to dampen MW oscillations after a system disturbance. This paper discusses the testing expectations for modeling NERC-compliant plants and the strategies for tuning a PSS. [2]
调整电力系统稳定器以满足NERC要求的要素
美国各地对NERC性能的要求各不相同。在适用的情况下,发电机和励磁系统需要经过一系列的模型验证试验。这些测试既耗时又昂贵。并不是所有的造纸厂都被要求遵守规定,但有些造纸厂可能会被公用事业部门指示这样做,因为他们的机器大小,与系统的相对互连,以及发电机输出的方向和位置。[1]现代励磁系统的一个特点是电力系统稳定器(PSS)。PSS用于25 MVA或更大的机器,在电压较弱的系统中发展电力系统稳定性问题,并符合NERC要求。在美国西部,电力系统的稳定性通常是一个问题,这取决于发电厂的位置。PSS增强了励磁系统的控制,以抑制系统扰动后的毫瓦振荡。本文讨论了建模符合nerc标准的电厂的测试期望和PSS的调优策略。[2]
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