光伏规模化并网的电能质量复合控制策略研究

黄冬冬; 吴在军; 窦晓波; 莫熙; 赵波

引用本文:	黄冬冬,吴在军,窦晓波,等.光伏规模化并网的电能质量复合控制策略研究[J].电力系统保护与控制,2015,43(3):107-112.
	HUANG Dongdong,WU Zaijun,DOU Xiaobo,et al.A power quality composite control strategy based on large-scale grid-connected photovoltaic power generation[J].Power System Protection and Control,2015,43(3):107-112

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光伏规模化并网的电能质量复合控制策略研究
黄冬冬¹, 吴在军¹, 窦晓波¹, 莫熙¹, 赵波²
1.东南大学电气工程学院，江苏南京210096;2.浙江省电力公司电力科学研究院，浙江杭州310014

摘要:

为了充分发挥并网逆变器结构及功能上的潜在优势，研究将滤波及无功补偿功能融入光伏电站逆变器中，同时实现有功并网、谐波抑制、无功补偿及电压补偿等多功能复用。在研究了逆变器控制策略以及微电网电能质量特性和控制方法后，对光伏电站拓扑结构进行了改进。在此基础上提出了一种基于逆变器动态剩余容量的无功分配策略，对并联逆变器和串联逆变器的控制策略进行详细讨论。运用该控制策略有效地实现了光伏规模化并网的电能质量复合治理，并用PSCAD/EMTDC软件通过实例仿真验证了控制策略的正确性和有效性。

关键词: 大规模光伏电能质量并联逆变器串联逆变器无功分配

DOI：10.7667/j.issn.1674-3415.2015.03.016

分类号:

基金项目:国家863高技术基金项目(2011AA05A107)；镇江市科技支撑计划项目(GY2011019)；国家电网公司项目 (52110113091H，5211011400AX)；省级电网运行控制协调优化技术研究与示范

A power quality composite control strategy based on large-scale grid-connected photovoltaic power generation

HUANG Dongdong¹, WU Zaijun¹, DOU Xiaobo¹, MO Xi¹, ZHAO Bo²

1.College of Electrical Engineering, Southeast University, Nanjing 210096, China;2.Zhejiang Electric Power Corporation Research Institute, Hangzhou 310014, China

Abstract:

To maximize the potential benefits of the structure and function of grid connected inverters and integrate the function of filtering and reactive power compensation into PV power plant inverters, while achieving multi-function reusing, such as active grid, harmonic suppression, reactive power compensation and voltage compensation. After researching the controlling strategies of inverter and power quality characteristics and controlling methods, the topology of PV power plant is improved, based on which the reactive power allocation strategy of dynamic stability margin of inverter is proposed, and the controlling strategy of shunt connected inverter and series connected inverter are researched in detail. The use of the controlling strategy mentioned above effectively implements the power quality complex governance of large-scale grid-connected photovoltaic, and the correctness and effectiveness of the proposed controlling strategy is verified by PSCAD/EMTDC.

Key words: large scale photovoltaic power quality parallel inverter series inverter reactive power allocation

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