Backstepping Control Based Coordinated Control of Aggregated Thermostatically Controlled Load and Generator Excitation

被引:0
|
作者
Yu Y. [1 ]
Lu J. [1 ]
Xie R. [1 ]
Mi Z. [2 ]
Jia Y. [2 ]
Zhang R. [3 ]
机构
[1] Key Laboratory of Distributed Energy Storage and Microgrid of Hebei Province (North China Electric Power University), Baoding
[2] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Baoding
[3] State Grid Shijiazhuang Electric Power Supply Company, Shijiazhuang
关键词
Aggregated thermostatically controlled loads (TCLs); Backstepping control; Coordinated controller; Generator excitation; Multi-index control;
D O I
10.7500/AEPS20181126001
中图分类号
学科分类号
摘要
Coordinated control of thermostatically controlled loads (TCLs) with energy storage characteristic and generator excitation enables to achieve multi-index regulation of power angle, frequency and voltage in power system. Firstly, the descriptions of bi-linear aggregated TCLs model and generator excitation model are integrated to derive an overall mathematical model. Then, based on backstepping control theory, the control strategy coordinated aggregated TCLs with generator excitation is proposed, and the stability of the controller is proved in theory. In allusion to the problem of "calculation explosion" in the design of the controller, a hyperbolic tangent based nonlinear differential tracker is devised to estimate the differential reference value of excitation voltage that reduces the calculation work. Finally, the control algorithm is verified by various cases, and the simulation results show that power angle, frequency and voltage of the system enable to track their references rapidly and correctly with the aid of the proposed coordinated controller. In comparison with the power system stabilizer in traditional excitation control, dynamic responses of state parameters through the controller are improved effectively and the stability of the system is enhanced with the participation of TCLs. © 2019 Automation of Electric Power Systems Press.
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页码:101 / 108and124
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