超级电容储能系统鲁棒分数阶PID控制设计

doi:10.12204/j.issn.1000-7229.2021.02.010

电力建设 ›› 2021, Vol. 42 ›› Issue (2): 77-84.doi: 10.12204/j.issn.1000-7229.2021.02.010

超级电容储能系统鲁棒分数阶PID控制设计

李敬航¹, 赖伟坚¹, 陈威洪¹, 李敬光¹, 杨德玲¹, 余涛²

1.广东电网有限责任公司东莞供电局,广东省东莞市 523000
2.苏州华天国科电力科技有限公司,江苏省苏州市 215000

收稿日期:2020-06-03 出版日期:2021-02-01 发布日期:2021-02-09
作者简介:李敬航(1989),男,工程师,技师,主要从事电网调度运行及管理工作;|赖伟坚(1988),男,工程硕士,工程师,主要研究方向为电力系统调度运行;|陈威洪(1980),男,硕士,高级工程师,主要研究方向为电力系统调度运行;|李敬光(1986),男,工程师,主要从事电网调度运行及管理工作;|杨德玲(1983),男,工程师,主要研究方向为电力系统调度运行;|余涛(1974),男,博士,教授,博士生导师,主要研究方向为复杂电力系统的非线性控制理论和仿真以及人工智能在电力系统中的应用。
基金资助:
广东电网有限责任公司科技项目(031900KK52170132);国家自然科学基金项目(51777078)

Design of Robust Fractional-Order PID Control of Supercapacitor Energy Storage Systems

LI Jinghang¹, LAI Weijian¹, CHEN Weihong¹, LI Jingguang¹, YANG Deling¹, YU Tao²

1. Dongguan Power Supply Bureau, Guangdong Power Grid Co., Ltd., Dongguan 523000, Guangdong Province, China
2. Suzhou Huatian Power Technology Co., Ltd., Suzhou 215000, Jiangsu Province, China

Received:2020-06-03 Online:2021-02-01 Published:2021-02-09
Supported by:
Science and Technology Project of Guangdong Power Grid Co., Ltd.(031900KK52170132);National Natural Science Foundation of China(51777078)

摘要/Abstract

摘要：

针对超级电容储能系统(supercapacitor energy storage system, SCES)设计了一款鲁棒分数阶PID (robust fractional-order PID control, RFOPID)控制。首先,利用高增益扰动观测器(high-gain perturbation observer, HGPO)对SCES的非线性、未建模动态和参数不确定性所聚合的扰动进行实时快速估计。接着,该扰动由分数阶PID (fractional-order PID, FOPID)控制器进行完全补偿。所提控制器不依赖于精确的SCES模型,仅需测量dq轴电流,易于硬件实现。最后,通过3种算例对RFOPID控制的控制性能进行评估。仿真结果表明:与其他控制器相比,RFOPID控制在各种工况下均具有最佳的控制性能和最强的鲁棒性。

关键词: 超级电容储能系统, 鲁棒分数阶PID控制, 扰动观测器

Abstract:

This study designs a robust fractional-order PID control (RFOPID) strategy of supercapacitor energy storage systems (SCES). At first, the nonlinearities, unmodelled dynamics and parameter uncertainties of SCES are estimated effectively by a high-gain perturbation observer (HGPO). Furthermore, a fractional-order PID (FOPID) controller is utilized to completely compensated the perturbation estimation. No accurate SCES model is required while only the dq-axis currents need to be measured, which is easy to implement in hardware. Finally, three case studies are used to evaluate the performance of RFOPID control. Simulation results show that RFOPID has the best control performance and the strongest robustness under various operation conditions compared with other controller.

Key words: supercapacitor energy storage systems, robust fractional-order PID control, perturbation observer

中图分类号:

TM712

李敬航, 赖伟坚, 陈威洪, 李敬光, 杨德玲, 余涛. 超级电容储能系统鲁棒分数阶PID控制设计[J]. 电力建设, 2021, 42(2): 77-84.

LI Jinghang, LAI Weijian, CHEN Weihong, LI Jingguang, YANG Deling, YU Tao. Design of Robust Fractional-Order PID Control of Supercapacitor Energy Storage Systems[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(2): 77-84.

图/表 9

图1 SCES并网结构示意图

Fig.1 Structure of SCES connected to power grid

图2 SCES的能量存储特性曲线

Fig.2 Energy storage characteristics of SCES

图3 SCES的总体RFOPID控制结构示意图

Fig.3 Overall RFOPID control structure of SCES

图4 新能源并网的SCES拓扑结构

Fig.4 The topology of SCES for renewable energy integration

表1 三种控制器的控制参数

Table 1 Control parameters of three controllers

图5 功率调节下的系统响应

Fig.5 System responses obtained under power regulation

图6 系统发生三相短路下的系统响应

Fig.6 System responses obtained under the three-phase short-circuit fault

图7 电网参数不确定性下的系统响应

Fig.7 System responses obtained under uncertain power grid parameters

表2 各控制器2种工况下的IAE指数以及总体控制成本

Table 2 IAE indices and overall control costs of different controllers obtained on two scenariospu

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超级电容储能系统鲁棒分数阶PID控制设计

Design of Robust Fractional-Order PID Control of Supercapacitor Energy Storage Systems

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