文章摘要
余洋,卢健斌,谢仁杰,等.基于反推控制的聚合温控负荷与发电机励磁协调控制[J].电力系统自动化,2019,43(16):101-108. DOI: 10.7500/AEPS20181126001.
YU Yang,LU Jianbin,XIE Renjie, et al.Coordinated Control of Aggregated Thermostatically Controlled Loads and Generator Excitation Based on Backstepping Control[J].Automation of Electric Power Systems,2019,43(16):101-108. DOI: 10.7500/AEPS20181126001.
基于反推控制的聚合温控负荷与发电机励磁协调控制
Coordinated Control of Aggregated Thermostatically Controlled Loads and Generator Excitation Based on Backstepping Control
DOI:10.7500/AEPS20181126001
关键词: 聚合温控负荷  发电机励磁  反推控制  协调控制器  多指标控制
KeyWords: aggregated thermostatically controlled loads(TCL)  generator excitation  backstepping control  coordinated controller  multi-index control
上网日期:2019-07-01
基金项目:国家电网公司总部科技项目“面向电力市场的柔性负荷聚合商运营模式及其运行调控关键技术研究”(KJGW2018-014)
作者单位E-mail
余洋 河北省分布式储能与微网重点实验室(华北电力大学), 河北省保定市 071003 yym0401@163.com 
卢健斌 河北省分布式储能与微网重点实验室(华北电力大学), 河北省保定市 071003  
谢仁杰 河北省分布式储能与微网重点实验室(华北电力大学), 河北省保定市 071003  
米增强 新能源电力系统国家重点实验室(华北电力大学), 河北省保定市 071003  
贾雨龙 新能源电力系统国家重点实验室(华北电力大学), 河北省保定市 071003  
张然 国网石家庄供电公司, 河北省石家庄市 050051  
摘要:
      利用具有储能特性的温控负荷与发电机励磁进行协调控制,可实现电力系统的功角、频率和电压的多指标调控。首先,采用双线性聚合温控负荷模型和发电机励磁模型,推导建立了二者联合的系统数学模型。然后,基于反推控制原理,提出了聚合温控负荷与发电机励磁的协调控制策略,并从理论上证明了控制器的稳定性。针对控制器设计中的微分“计算爆炸”问题,利用双曲正切的非线性微分跟踪器设计了励磁电压参考量的微分估计算法,降低了参考量微分计算的工作量。最后,通过算例对控制算法进行了仿真验证。结果表明,在协调控制器的作用下,系统功角、频率和电压等多个被控量均可快速地追踪上各自的参考值。对比传统电力系统稳定器励磁控制,温控负荷参与调控能有效改善系统各状态量的动态响应,提高系统稳定性。
Abstract:
      Coordinated control of thermostatically controlled loads(TCL)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 TCL model and generator excitation model are integrated to derive an overall mathematical model. Then, based on backstepping control theory, the control strategy coordinated aggregated TCL 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 TCL.
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