针对复杂不确定性扰动导致光伏微网需求侧变换器输出电能质量恶化问题,提出一种融合自适应规则的校正型自抗扰控制策略。首先,对线性扩张状态观测器部分的扰动观测传递函数进行修正,避免到达稳态时存在一定的误差,使其实现对总扰动更精确的跟踪;其次,以规则设计作为参数优化机制对外环控制器参数进行在线实时调整,进一步优化系统的快速响应性能与控制准确性;随后,基于对总和扰动重构能力、扰动抑制能力等方面的理论推导,指出所提策略能有效提升系统控制品质的内在依据,同时借助李纳德-戚帕特稳定判据证明系统稳定性;最后,通过数字仿真结果以及参数摄动下的鲁棒性分析验证该策略的有效性与可行性。
Abstract
To address the issue of deteriorating power quality in photovoltaic microgrid demand-side converters caused by complex uncertain disturbances, a corrective active disturbance rejection control （ADRC） strategy integrating adaptive rules is proposed. First, the disturbance observation transfer function of the linear extended state observer part is corrected to avoid certain errors at steady state, enabling more accurate tracking of total disturbances. Second, rule-based design is used as a parameter optimization mechanism to adjust the outer-loop controller parameters online in real time, further optimizing the system's speed and accuracy performance. Then, based on theoretical derivations regarding the total disturbance reconstruction capability and disturbance suppression ability, the internal rationale for how the proposed strategy can effectively enhance system control quality is pointed out, and the system stability is proved using the Leonard-Chipart stability criterion. Finally, the effectiveness and feasibility of this strategy are verified through digital simulation results and robustness analysis under parameter perturbations.
关键词
光伏微网 /
接口变换器 /
线性自抗扰控制 /
自适应规则 /
协调系数 /
性能分析
Key words
photovoltaic microgrid /
interface converter /
LADRC /
adaptive rules /
coordination parameters /
performance analysis
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 刘硕, 周旭, 李建林. 储能型开关升压光伏并网逆变器的研究[J]. 太阳能学报, 2023, 44(1): 42-48.
LIU S, ZHOU X, LI J L.Research on energy storage switched boost photovoltaic grid-connected inverter[J]. Acta energiae solaris sinica, 2023, 44(1): 42-48.
[2] HUENTELER J, NIEBUHR C, SCHMIDT T S.The effect of local and global learning on the cost of renewable energy in developing countries[J]. Journal of cleaner production, 2016, 128: 6-21.
[3] WU T, ZHANG Y J, TANG X Y.A VSC-based BESS model for multi-objective OPF using mixed integer SOCP[J]. IEEE transactions on power systems, 2019, 34(4): 2541-2552.
[4] 杨惠, 骆姗, 孙向东, 等. 光伏储能双向DC-DC变换器的自抗扰控制方法研究[J]. 太阳能学报, 2018, 39(5): 1342-1350.
YANG H, LUO S, SUN X D, et al.Research on ADRC method for bidirectional DC-DC converter of solar energy storage system[J]. Acta energiae solaris sinica, 2018, 39(5): 1342-1350.
[5] SHAN W J, WANG Y F, TANG W.Fractional order internal model PID control for pulp batch cooking process[J]. Journal of chemical engineering of Japan, 2023, 56(1): 1-10.
[6] 孙孝哲, 张祯滨, 韩明昊, 等. 双有源全桥变换器无电流传感器鲁棒预测控制[J]. 电工技术学报, 2024, 39(10): 3093-3104, 3140.
SUN X Z, ZHANG Z B, HAN M H, et al.An enhanced current sensorless predictive control for dual active bridge converter[J]. Transactions of China Electrotechnical Society, 2024, 39(10): 3093-3104, 3140.
[7] 梅杨, 陈丽莎, 黄伟超, 等. 级联式双向DC-DC变换器的优化控制方法[J]. 电工技术学报, 2017, 32(19): 153-159.
MEI Y, CHEN L S, HUANG W C, et al.Optimized control method of cascaded bi-directional DC-DC converters[J]. Transactions of China Electrotechnical Society, 2017, 32(19): 153-159.
[8] 张国驹, 唐西胜, 周龙, 等. 基于互补PWM控制的Buck/Boost双向变换器在超级电容器储能中的应用[J]. 中国电机工程学报, 2011, 31(6): 15-21.
ZHANG G J, TANG X S, ZHOU L, et al.Research on complementary PWM controlled buck/boost Bi-directional converter in supercapacitor energy storage[J]. Proceedings of the CSEE, 2011, 31(6): 15-21.
[9] 徐良材, 皇甫宜耿, 李钱, 等. 基于微分平坦理论的燃料电池用高增益DC-DC变换器鲁棒控制研究[J]. 中国电机工程学报, 2020, 40(21): 6828-6839.
XU L C, HUANGFU Y G, LI Q, et al.Research on robust control of high gain DC-DC converter for fuel cell based on differential flatness theory[J]. Proceedings of the CSEE, 2020, 40(21): 6828-6839.
[10] 韩京清. 自抗扰控制器及其应用[J]. 控制与决策, 1998, 13(1): 19-23.
HAN J Q.Auto-disturbances-rejection controller and its applications[J]. Control and decision, 1998, 13(1): 19-23.
[11] 周振雄, 石硕. 基于DRNN自整定准PR控制的光伏并网系统研究[J]. 太阳能学报, 2017, 38(11): 2932-2940.
ZHOU Z X, SHI S.Research on quasi-PR control based on DRNN of selftuning for photovoltaic grid-connected system[J]. Acta energiae solaris sinica, 2017, 38(11): 2932-2940.
[12] GAO Z Q.Scaling and bandwidth-parameterization based controller tuning[C]//Proceedings of the 2003 American Control Conference. 2003, Denver, CO, USA, 2003: 4989-4996.
[13] HAN J Q.From PID to active disturbance rejection control[J]. IEEE transactions on industrial electronics, 2009, 56(3): 900-906.
[14] SHAN Y H, HU J F, LI Z L, et al.A model predictive control for renewable energy based AC microgrids without any PID regulators[J]. IEEE transactions on power electronics, 2018, 33(11): 9122-9126.
[15] 马幼捷, 杨清, 周雪松, 等. 基于级联型扩张状态观测器的直流微电网低压负载接口变换器自抗扰稳压研究[J]. 电力系统保护与控制, 2024, 52(4): 121-132.
MA Y J, YANG Q, ZHOU X S, et al.Active disturbance rejection and voltage regulation of a DC microgrid low voltage load interface converter based on a cascaded extended state observer[J]. Power system protection and control, 2024, 52(4): 121-132.
[16] 周雪松, 王博, 马幼捷, 等. 含二阶扰动补偿的交错并联变换器自抗扰控制[J]. 电机与控制学报, 2023, 27(12): 159-170.
ZHOU X S, WANG B, MA Y J, et al.Active disturbance rejection control of interleaving parallel converter with second-order disturbance compensation[J]. Electric machines and control, 2023, 27(12): 159-170.
[17] 段茜月, 陈燕东, 徐元璨, 等. 一种改进线性扩张状态观测器的自抗扰控制宽频带振荡抑制方法研究[J]. 电力系统保护与控制, 2023, 51(13): 12-24.
DUAN X Y, CHEN Y D, XU Y C, et al.A wideband oscillation suppression method for active disturbance rejection control with an enhanced linear expansion state observer[J]. Power system protection and control, 2023, 51(13): 12-24.
基金
国家自然科学基金重点项目（U23B20142）; 天津市研究生科研创新项目（2022SKYZ036）
PDF(9620 KB)
