局部阴影下光伏电站参与一次调频的控制策略

杨黎晖; 王少康; 史金柱; 杨浩

doi:10.19912/j.0254-0096.tynxb.2022-1102

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (11) : 72-81. DOI: 10.19912/j.0254-0096.tynxb.2022-1102

局部阴影下光伏电站参与一次调频的控制策略

杨黎晖, 王少康, 史金柱, 杨浩

作者信息 +

CONTROL STRATEGY OF PV POWER PLANTS PARTICIPATING IN PRIMARY FREQUENCY CONTROL UNDER PARTIAL SHADOW

Yang Lihui, Wang Shaokang, Shi Jinzhu, Yang Hao

Author information +

文章历史 +

摘要

针对采用光伏虚拟同步发电机（PV-VSG）控制策略的光伏电站参与电网一次调频的问题,考虑光伏阵列受局部阴影遮挡的情况,提出一种基于自适应虚拟惯量的有功备用式PV-VSG控制策略,采用粒子群优化算法实现局部阴影条件下光伏阵列的最大功率点跟踪和减载备用运行,并根据电网频率变化过程中不同阶段的特性,自适应调节虚拟惯量参数以减小频率超调量并加快频率的恢复速度。此外,为了使调频模式下光伏电站内各PV-VSG的有功功率合理分配,采用一种基于等可调容量比的有功分配策略,使站内各光伏机组具有相同的调频功率裕度,避免部分光伏机组的过度调节。最后,以10 MW光伏电站参与电网一次调频为例进行仿真分析,验证了所提控制策略的有效性。

Abstract

Aiming at the problem that PV power station with the control strategy of photovoltaic virtual synchronous generator （PV-VSG） participating in power system primary frequency control, and considering the partial shadow conditions, an active power reserve PV-VSG control strategy based on the adaptive virtual inertia is proposed. The particle swarm optimization algorithm is used to realize the maximum power point tracking and de-loading operation of PV array for grid frequency regulation under partial shadow conditions, and the virtual inertia is regulated adaptively according to the characteristics of grid frequency under different stages in the variation process, so that the frequency overshoot can be reduced and the recovery speed can be accelerated. Furthermore, in order to reasonably distribute the active power among PV-VSGs in the power plant under frequency regulation mode, an active power distribution strategy based on the equal adjustable capacity ratio is adopted, which makes each PV unit in the plant has the same active power margin for frequency regulation, so the over-regulation problem of some PV units can be avoided. Finally, simulation analyses are carried out by taking a 10 MW solar power plant participating in primary frequency regulation as an example to verify the effectiveness of the proposed control strategy.

导出引用

杨黎晖, 王少康, 史金柱, 杨浩. 局部阴影下光伏电站参与一次调频的控制策略[J]. 太阳能学报. 2023, 44(11): 72-81 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1102

Yang Lihui, Wang Shaokang, Shi Jinzhu, Yang Hao. CONTROL STRATEGY OF PV POWER PLANTS PARTICIPATING IN PRIMARY FREQUENCY CONTROL UNDER PARTIAL SHADOW[J]. Acta Energiae Solaris Sinica. 2023, 44(11): 72-81 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1102

中图分类号： TM615

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