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Active disturbance rejection based load frequency control and voltage regulation in power systems
LiliDONG,AnusreeMANDALI,AllenMORINEC,YangZHAO
0
(Department of Electrical Engineering and Computer Science, Cleveland State University, Cleveland, OH 44115, U.S.A.)
摘要:
An active disturbance rejection controller (ADRC) is developed for load frequency control (LFC) and voltage regulation respectively in a power system. For LFC, the ADRC is constructed on a three area interconnected power system. The control goal is to maintain the frequency at nominal value (60Hz in North America) and keep tie line power flow at scheduled value. For voltage regulation, the ADRC is applied to a static var compensator (SVC) as a supplementary controller. It is utilized to maintain the voltages at nearby buses within the ANSI C84.1 limits (or ±5% tolerance). Particularly, an alternative ADRC with smaller controller gains than classic ADRC is originally designed on the SVC system. From power generation and transmission to its distribution, both voltage and frequency regulating systems are subject to large and small disturbances caused by sudden load changes, transmission faults, and equipment loss/malfunction etc. The simulation results and theoretical analyses demonstrate the effectiveness of the ADRCs in compensating the disturbances and achieving the control goals.
关键词:  Active disturbance rejection control, power systems, load frequency control, static var compensator, voltage regulation, disturbance, system uncertainty
DOI:
基金项目:
Active disturbance rejection based load frequency control and voltage regulation in power systems
Lili DONG,Anusree MANDALI,Allen MORINEC,Yang ZHAO
(Department of Electrical Engineering and Computer Science, Cleveland State University, Cleveland, OH 44115, U.S.A.;Department of Transmission Substation Services at FirstEnergy Corp, 76 South Main Street, A-Go-11, Akron, OH 44308, U.S.A.)
Abstract:
An active disturbance rejection controller (ADRC) is developed for load frequency control (LFC) and voltage regulation respectively in a power system. For LFC, the ADRC is constructed on a three area interconnected power system. The control goal is to maintain the frequency at nominal value (60Hz in North America) and keep tie line power flow at scheduled value. For voltage regulation, the ADRC is applied to a static var compensator (SVC) as a supplementary controller. It is utilized to maintain the voltages at nearby buses within the ANSI C84.1 limits (or ±5% tolerance). Particularly, an alternative ADRC with smaller controller gains than classic ADRC is originally designed on the SVC system. From power generation and transmission to its distribution, both voltage and frequency regulating systems are subject to large and small disturbances caused by sudden load changes, transmission faults, and equipment loss/malfunction etc. The simulation results and theoretical analyses demonstrate the effectiveness of the ADRCs in compensating the disturbances and achieving the control goals.
Key words:  Active disturbance rejection control, power systems, load frequency control, static var compensator, voltage regulation, disturbance, system uncertainty