NDLI: Online re-dispatching of power systems based on modal sensitivity identification

Content Provider	IET Digital Library
Author	Zhang, Junbo Lu, Chao Chung, Chi Yung Men, Kun Tu, Liang
Abstract	Sensitivity approach has been widely used for various re-dispatching problems in power systems. The conventional sensitivity approach depends heavily on the detailed system model hence it suffers from the model bias problem. Existing sensitivity identification methods can indeed release the requirement of the system model, but the commonly-used constant sensitivity assumption is inconsistent with the actual situation. To solve this problem, this study proposes an online sensitivity identification method with the ability to track the system operating conditions. A general online re-dispatching procedure integrated with the proposed method is then introduced for various re-dispatching problems. Since the proposed method is data oriented and is comparable with the model-based method, it facilitates online implementation of the conventional sensitivity-based re-dispatching method. The key issue of the proposed approach, online sensitivity identification, is validated in a two-area four-machine system, compared with the conventional model-based method. Finally, the effectiveness of the whole re-dispatching procedure is demonstrated in a large complex system, China Southern Grid.
Starting Page	1352
Ending Page	1360
Page Count	9
ISSN	17518687
Volume Number	9
e-ISSN	17518695
Issue Number	Issue 12, Sep (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/9/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2014.0873
Journal	IET Generation, Transmission & Distribution
Publisher Date	2015-04-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	China Southern Grid Commonly-used Constant Sensitivity Assumption Load Dispatching Modal Analysis Online Modal Sensitivity Identification Method Online Redispatching Power Grid Power System Economics Power System Identification Power System Managemen Power System Operation Power System Redispatching Two-area Four-machine System
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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