Journal
IEEE TRANSACTIONS ON POWER SYSTEMS
Volume 31, Issue 4, Pages 3320-3321Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2015.2480005
Keywords
Load frequency control (LFC); active disturbance rejection control (ADRC); equivalent input disturbance (EID); generalized state observer (GSO); small-gain theory
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Funding
- National Natural Science Foundation of China (NSFC) [61304092, 51377001, 61210011, 6123308]
- International Science and Technology Cooperation Program of China [2015DFR70850]
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This letter proposes a two-layer active disturbance rejection control (ADRC) method with the compensation of estimated equivalent input disturbances (EID) for load frequency control (LFC) of multi-area interconnected power system. This method has a capability of rejecting the effects of random load variations and parameter uncertainties, and guaranteeing high dynamic performance. The state-space model of LFC system is established. Then a full-order generalized state observer (GSO) is employed in ADRC system to estimate EID. A stability condition is derived based on the small-gain theory. Simulation results demonstrate the robust performance of the proposed method, by comparing with traditional one.
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