NDLI: Load frequency control: Problems and solutions

Content Provider	IEEE Xplore Digital Library
Author	Tan Wen
Copyright Year	2011
Description	Author affiliation: School of Control & Computer Engineering, North China Electric Power University, Beijing 100206, China (Tan Wen)
Abstract	Frequency control is one of the most profitable auxiliary services for the power systems through maintaining short-term balance of energy and frequency of the power systems. Frequency control is usually accomplished through generator governor response (primary frequency regulation) and Load Frequency Control (LFC). The goal of LFC is to reestablish primary frequency regulation capacity, return the frequency to its nominal value and minimize unscheduled tie-line power flows between neighboring control areas. This paper first formulates the LFC problem for single-area power systems as a disturbance rejection problem and discuss the effect of system parameters and the generation rate constraints (GRC) on the control performance. Then decentralized LFC for multi-area power systems is formulated and a result on checking the stability of the closed-loop system considering the inherent structure of the multi-area power systems is proposed. Finally, LFCs with communication delays and in deregulated market are formulated and a unified LFC-PID tuning method is discussed. It is shown that the load frequency control problem is a typical disturbance rejection problem with rate limit, parameter variations, structural uncertainties and communication delays. Advanced control techniques are expected to be applied to improve the control performance.
Starting Page	6281
Ending Page	6286
File Size	1026122
Page Count	6
File Format	PDF
ISBN	9781457706776
ISSN	21612927
e-ISBN	9789881725592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Chinese Assoc of Automati
Subject Keyword	Disturbance Rejection Generation Rate Constraints Power Systems Generators Silicon Robustness Load Frequency Control Turbines
Content Type	Text
Resource Type	Article

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