| 引用本文: | 屈克庆,郭东豪,潘 超,曾志伟,赵晋斌.基于光储虚拟同步机的模型预测双环协同优化控制策略[J].电力系统保护与控制,2024,52(18):149-157.[点击复制] |
| QU Keqing,GUO Donghao,PAN Chao,ZENG Zhiwei,ZHAO Jinbin.Model predictive dual-loop cooperative optimal control strategy based on an optical storage virtual synchronous generator[J].Power System Protection and Control,2024,52(18):149-157[点击复制] |
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| 摘要: |
| 随着新能源和电力电子设备的渗透率不断提高，引起新型电力系统惯量不足和稳定性下降等问题。以光储一体机并网系统为例，提出一种基于虚拟同步机(virtual synchronous generator, VSG)的模型预测双环协同优化控制(model prediction double-loop co-optimisation, MPDC)策略。在功率外环方面，根据同步发电机转子频率特性，采用模型预测控制对不同阶段的VSG参考功率进行修正。在内环方面，选取有限集三矢量模型预测电流控制(finite control set-three vector-model predictive current control, FCS-TV-MPCC)实现准确跟踪外环输出参考电压。仿真与实验结果表明，所提控制策略能提高频率跟踪精度，且与传统控制方法相比，在负载发生突变情况下可减小系统频率超调，同时降低频率变化率，从而改善有功调频特性。 |
| 关键词: 光储一体机 虚拟同步机 模型预测控制 有限集三矢量 |
| DOI：10.19783/j.cnki.pspc.231285 |
| 投稿时间：2023-10-05修订日期：2024-01-26 |
| 基金项目:国家自然科学基金项目资助(52177184) |
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| Model predictive dual-loop cooperative optimal control strategy based on an optical storage virtual synchronous generator |
| QU Keqing1,GUO Donghao1,PAN Chao1,ZENG Zhiwei1,ZHAO Jinbin2 |
| (1. College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
2. Offshore Wind Power Research Institute, Shanghai University of Electric Power, Shanghai 200090, China) |
| Abstract: |
| The increasing penetration of new energy sources and power electronic equipment has caused problems such as insufficient inertia and decreased stability of new power systems. In this paper, a model prediction double-loop coptimisation (MPDC) control strategy based on a virtual synchronous generator (VSG) is proposed as an example for the grid-connected photovoltaic storage integrated machine. In the power outer loop, model predictive control is used to correct the VSG reference power at different stages according to the synchronous generator rotor frequency characteristics. For the inner loop, a finite set three vector model predictive current control (FCS-TV-MPCC) is selected to achieve accurate tracking of the outer loop output reference voltage. Simulation and experiment show that the proposed control strategy can improve the frequency tracking accuracy, and compared with the traditional control method, it can reduce the system frequency overshoot in the case of sudden change of load. At the same time, it reduces the frequency change rate, so as to improve the active frequency modulation characteristics. |
| Key words: photovoltaic storage integrated machine virtual synchronous generator model predictive control a finite set three-vector |
