Shanxi Tiandi Wangpo Coal Industry Co. , Ltd.
CCTEG Changzhou Research Institute
Tiandi (Changzhou) Automation Co. , Ltd.

在光伏等分布式电源接入的煤矿交直流配电网中,存在导致直流电压波动的因素,如光照不均匀和负荷波动等。为减弱这些波动对系统稳定性的影响,文章在传统的光伏系统稳压单闭环控制结构的基础上,提出了一种将光伏输出电压与电机负载电流引入作为前馈环节的控制策略,削弱由这两种因素引起的直流母线电压波动。在PSCAD/EMTDC中搭建了煤矿交直流混合配电网仿真模型,通过比较最大功率点跟踪(MPPT)控制策略、MPPT-传统稳压切换控制策略和本文所提控制策略下的直流母线电压特性,验证了所提控制策略相对于传统控制策略的优势。最后,利用RTLAB做了硬件在环实验进一步验证了该策略的有效性。

In the AC/ DC distribution network of coal mines with distributed power sources such as photovoltaics, there are factors that cause DC voltage fluctuations, such as uneven illumination and load fluctuations. In order to reduce the influence of these fluctuations on system stability, we propose a control strategy that introduces the photovoltaic output voltage and motor load current as feed-forward links on the basis of the traditional single-loop control structure of photovoltaic system to attenuate DC link voltage fluctuations caused by these two factors. A simulation model of AC/ DC hybrid distribution network in coal mines is built in PSCAD/ EMTDC, and the effectiveness of the proposed control strategy is verified by comparing the maximum power point tracking (MPPT) control strategy, MPPT-traditional voltage regulation switching control strategy and the DC bus voltage characteristics under the proposed control strategy.

天地(常州)自动化股份有限公司研发项目(2023FY0002);天地科技股份有限公司科技创新创业资金专项项目(2023-TD-ZD001-006)

王磊,史小军,于铄航,等.基于光伏前级Boost前馈控制的煤矿交直流配电网稳压策略[J].煤炭工程,2024,56(12):89-94.